/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Unified Tenzy default theme (desktop-light-dark grey) */
    --surface-0: #2d3340;
    --surface-1: #353d4c;
    --surface-2: #3e4758;
    --surface-3: #465062;
    --surface-4: #505a6f;
    --surface-glass: rgba(53, 64, 82, 0.72);

    --primary-bg: var(--surface-0);
    --secondary-bg: var(--surface-1);
    --card-bg: var(--surface-2);
    --card-bg-elevated: var(--surface-3);
    --glass-bg: rgba(62, 75, 96, 0.6);
    --border-color: rgba(180, 190, 214, 0.24);
    --border-strong: rgba(196, 207, 230, 0.38);

    --text-primary: #eef1f8;
    --text-secondary: #c9d1e3;
    --text-muted: #9ea9bf;

    --accent-primary: #7c7aff;
    --accent-secondary: #5c58e8;
    --accent-tertiary: #8da9ff;
    --success: #5fd2a2;
    --warning: #f0c57a;
    --error: #e07d97;

    --shadow-sm: 0 6px 14px rgba(9, 12, 19, 0.24);
    --shadow-md: 0 14px 30px rgba(9, 12, 19, 0.28);
    --shadow-lg: 0 18px 38px rgba(8, 12, 19, 0.32);
    --shadow-xl: 0 24px 44px rgba(8, 12, 19, 0.36);
    --shadow-inner: inset 0 1px 0 rgba(255, 255, 255, 0.06), inset 0 -8px 14px rgba(0, 0, 0, 0.28);
    --shadow-lifted: 0 20px 42px rgba(8, 12, 19, 0.34);
    --shadow-high: 0 32px 58px rgba(8, 12, 19, 0.4);

    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 16px;
    --radius-pill: 999px;

    --text-xs: 0.83rem;
    --text-sm: 0.96rem;
    --text-base: 1rem;
    --text-lg: 1.18rem;
    --text-xl: 1.4rem;
    --text-2xl: 1.78rem;
    --text-3xl: 2.15rem;

    --app-bg: var(--surface-0);
    --app-bg-subtle: var(--surface-1);
    --app-surface: var(--surface-2);
    --app-surface-hover: var(--surface-3);
    --app-surface-active: var(--surface-4);
    --app-border: var(--border-color);
    --app-border-strong: var(--border-strong);
    --app-text: var(--text-primary);
    --app-text-secondary: var(--text-secondary);
    --app-text-muted: var(--text-muted);
    --app-accent: var(--accent-primary);
    --app-accent-hover: var(--accent-secondary);
    --app-accent-muted: rgba(124, 122, 255, 0.18);
    --app-success: var(--success);
    --app-error: var(--error);
    --app-radius-sm: var(--radius-sm);
    --app-radius: var(--radius-md);
    --app-radius-lg: var(--radius-lg);
    --app-transition: 0.16s ease;
    --app-titlebar-height: 36px;
}

/* -------------------------------------------------------------------------- */
/* Tenzy app shell (html.codii-app): matte base; suppress legacy purple haze   */
/* -------------------------------------------------------------------------- */
html.codii-app body {
    font-family: var(--font-ui, 'Inter', 'Segoe UI', sans-serif);
    background: var(--bg-app, #09090b) !important;
    color: var(--text-primary, #e8e8e8);
}

html.codii-app .app-container::before,
html.codii-app .app-container::after {
    display: none !important;
}

html.codii-app .header {
    background: transparent !important;
    backdrop-filter: none !important;
}

html.codii-app .header-shell {
    background: var(--bg-surface-1, #0d0d0d) !important;
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.09)) !important;
    box-shadow: none !important;
    border-radius: var(--radius-md, 6px) !important;
}

body {
    font-family: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background:
        radial-gradient(circle at 16% 8%, rgba(124, 122, 255, 0.12) 0%, transparent 48%),
        radial-gradient(circle at 88% 5%, rgba(141, 169, 255, 0.08) 0%, transparent 46%),
        linear-gradient(165deg, #2d3340 0%, #333b4a 45%, #3a4353 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    font-size: var(--text-base);
    line-height: 1.55;
}

/* App Container */
.app-container {
    min-height: 100vh;
    position: relative;
    isolation: isolate;
}

.app-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 14% 70%, rgba(124, 122, 255, 0.08) 0%, transparent 56%),
        radial-gradient(circle at 82% 24%, rgba(141, 169, 255, 0.06) 0%, transparent 52%),
        radial-gradient(circle at 52% 44%, rgba(255, 255, 255, 0.03) 0%, transparent 66%);
    pointer-events: none;
    z-index: -1;
}

.app-container::after {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(180deg, rgba(45, 56, 73, 0.16) 0%, rgba(29, 36, 49, 0.34) 45%, rgba(20, 26, 36, 0.5) 100%);
    pointer-events: none;
    z-index: -2;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 140;
    padding: 1.25rem 0 0.85rem;
    backdrop-filter: blur(22px);
    background: linear-gradient(180deg, rgba(4, 6, 12, 0.92) 0%, rgba(4, 6, 12, 0.68) 55%, rgba(4, 6, 12, 0.1) 100%);
}

.header-shell {
    max-width: 1240px;
    width: min(1240px, calc(100% - 2.4rem));
    margin: 0 auto;
    padding: 1rem 1.8rem;
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, rgba(38, 48, 80, 0.96) 0%, rgba(24, 31, 56, 0.94) 52%, rgba(16, 22, 40, 0.9) 100%);
    border: 1px solid rgba(189, 200, 255, 0.25);
    box-shadow: 0 24px 45px rgba(6, 10, 24, 0.52), inset 0 1px 0 rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(22px);
}

.header-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    z-index: 1;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.header-content::-webkit-scrollbar {
    display: none;
}

/* Blur fade on scrollable edges */


.primary-nav {
    position: relative;
}

.logo-stack {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.logo-wordmark {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 16px;
}

.logo-image {
    width: 36px;
    height: 36px;
    border-radius: 10px;
}

/* Spin animation for logo click */
.logo-spin {
    animation: logoSpin 600ms cubic-bezier(.2,.8,.2,1) 1;
}
@keyframes logoSpin {
    from { transform: rotate(0deg) scale(1); }
    60% { transform: rotate(520deg) scale(1.05); }
    to { transform: rotate(720deg) scale(1); }
}

.logo-wordmark h1 {
    font-size: 1.45rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: linear-gradient(135deg, var(--accent-primary) 20%, var(--accent-secondary) 90%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-subtitle {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.product-tag {
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(189, 200, 255, 0.25);
    background: linear-gradient(180deg, rgba(125, 127, 255, 0.18), rgba(125, 127, 255, 0.05));
    color: rgba(224, 230, 255, 0.85);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.18);
    white-space: nowrap;
    flex-shrink: 0;
}

.primary-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.32rem;
    padding: 0.35rem;
    border-radius: var(--radius-pill);
    background: rgba(16, 23, 41, 0.68);
    border: 1px solid rgba(189, 200, 255, 0.18);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
    flex-shrink: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.primary-nav::-webkit-scrollbar {
    display: none;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-pill);
    color: var(--text-secondary);
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    text-decoration: none;
    border: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0));
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.nav-link:hover {
    color: rgba(235, 240, 255, 0.9);
    border-color: rgba(189, 200, 255, 0.25);
    transform: translateY(-1px);
}

.nav-link:hover::after {
    opacity: 0.35;
}

.nav-link.active {
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.32), rgba(159, 92, 255, 0.26));
    color: #f5f6ff;
    border-color: transparent;
    box-shadow: 0 12px 24px rgba(22, 28, 55, 0.5), inset 0 1px 0 rgba(255,255,255,0.18);
}

.header-search {
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    justify-content: flex-end;
    flex-wrap: nowrap;
    flex-shrink: 0;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.header-actions::-webkit-scrollbar {
    display: none;
}

.profile-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(145deg, rgba(125, 127, 255, 0.28), rgba(125, 127, 255, 0.12));
    border: 1px solid rgba(189, 200, 255, 0.26);
    color: #f5f6ff;
    font-weight: 600;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 12px 24px rgba(18, 22, 42, 0.4), inset 0 1px 0 rgba(255,255,255,0.18);
    flex-shrink: 0;
}

.profile-avatar:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 38px rgba(16, 20, 40, 0.48), inset 0 1px 0 rgba(255,255,255,0.26);
}

/* Buttons */
.btn-primary,
.btn-secondary {
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    border: none;
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    min-height: 48px;
    white-space: nowrap;
    flex-shrink: 0;
}

.btn-generate {
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.16);
    background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
    color: var(--text-primary);
    box-shadow: 0 8px 20px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Floating action button for Generate AI Lesson on lessons page */
.fab-generate {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 56px;
    height: 56px;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.16);
    background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 12px 28px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.06);
    cursor: pointer;
    z-index: 1100;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.fab-generate:hover { transform: translateY(-2px); box-shadow: 0 16px 34px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.08); }
.fab-generate svg { pointer-events: none; }

.btn-generate:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.35), inset 0 1px 0 rgba(255,255,255,0.08);
}

.btn-primary {
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.95), rgba(159, 92, 255, 0.9));
    color: #0a0d1c;
    border: 1px solid rgba(189, 200, 255, 0.25);
    box-shadow: 0 18px 40px rgba(92, 102, 210, 0.55), inset 0 1px 0 rgba(255,255,255,0.22);
    text-shadow: 0 1px 0 rgba(255,255,255,0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 24px 48px rgba(88, 100, 215, 0.6), inset 0 1px 0 rgba(255,255,255,0.28);
}

.btn-secondary {
    background: rgba(12, 18, 34, 0.8);
    color: rgba(235, 240, 255, 0.9);
    border: 1px solid rgba(189, 200, 255, 0.2);
    backdrop-filter: blur(12px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 12px 26px rgba(6, 10, 24, 0.35);
}

.btn-secondary:hover {
    background: rgba(18, 26, 44, 0.88);
    border-color: rgba(189, 200, 255, 0.32);
    transform: translateY(-1px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1), 0 16px 30px rgba(6, 10, 24, 0.42);
}

/* Pricing styles */
/* Plans: Stripe / billing notice (matches premium card glow) */
.premium-stripe-strip {
  margin: 0 0 1rem;
  padding: 0.85rem 1.05rem;
  border-radius: var(--radius-lg, 14px);
  border: 1px solid rgba(167, 139, 250, 0.28);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.14),
    rgba(15, 18, 28, 0.88)
  );
  color: rgba(230, 233, 255, 0.92);
  font-size: 0.82rem;
  line-height: 1.5;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}
.premium-stripe-strip[hidden] {
  display: none !important;
}

.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; }
.pricing-card {
    position: relative;
    background: linear-gradient(180deg, rgba(18, 24, 42, 0.92), rgba(10, 14, 26, 0.92));
    border: 1px solid rgba(189, 200, 255, 0.16);
    border-radius: var(--radius-lg);
    padding: 1.35rem 1.5rem;
    box-shadow: 0 18px 32px rgba(4, 8, 20, 0.45), inset 0 1px 0 rgba(255,255,255,0.06);
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    overflow: hidden;
}
.pricing-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(circle at 20% 0%, rgba(125, 127, 255, 0.25) 0%, transparent 55%);
    opacity: 0.45;
    pointer-events: none;
}
.pricing-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
    pointer-events: none;
}
.pricing-card .pricing-title { font-weight: 600; font-size: var(--text-lg); color: rgba(244, 246, 255, 0.95); letter-spacing: 0.02em; }
.pricing-card .pricing-price { font-size: var(--text-xl); color: rgba(244, 246, 255, 0.98); font-weight: 600; }
.pricing-list { margin: 0 0 0.6rem 1rem; color: rgba(224, 230, 255, 0.75); display: grid; gap: 0.4rem; }
.pricing-list li { position: relative; padding-left: 0.4rem; }
.pricing-list li::before { content: '•'; position: absolute; left: -0.6rem; color: rgba(224, 230, 255, 0.55); }
.pricing-card.premium {
    border-color: rgba(125, 127, 255, 0.35);
}
.pricing-card.premium::before {
    background: radial-gradient(circle at 18% 0%, rgba(125, 127, 255, 0.35) 0%, transparent 58%);
}
.pricing-card.premium::after {
    box-shadow: inset 0 0 0 1px rgba(125, 127, 255, 0.25);
}
.pricing-card.premium .btn-primary {
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.95), rgba(159, 92, 255, 0.9));
    color: #0a0d1c;
}
.pricing-card.premium .btn-primary:hover {
    box-shadow: 0 22px 42px rgba(120, 110, 255, 0.45), inset 0 1px 0 rgba(255,255,255,0.28);
}
.pricing-card.infinite {
    border-color: rgba(67, 209, 158, 0.45);
    background: linear-gradient(180deg, rgba(16, 34, 36, 0.95) 0%, rgba(11, 22, 24, 0.92) 55%, rgba(8, 16, 20, 0.9) 100%);
    box-shadow: 0 22px 40px rgba(7, 26, 22, 0.55), inset 0 1px 0 rgba(255,255,255,0.08);
}
.pricing-card.infinite::before {
    background: radial-gradient(circle at 20% 0%, rgba(67, 209, 158, 0.35) 0%, transparent 55%);
    opacity: 0.6;
}
.pricing-card.infinite::after {
    box-shadow: inset 0 0 0 1px rgba(67, 209, 158, 0.35);
}
.pricing-card.infinite .pricing-title {
    color: rgba(210, 255, 240, 0.95);
    text-shadow: 0 0 12px rgba(67, 209, 158, 0.45);
}
.pricing-card.infinite .pricing-price {
    color: rgba(175, 255, 227, 0.98);
    text-shadow: 0 0 18px rgba(67, 209, 158, 0.45);
}
.pricing-card.infinite .btn-primary {
    background: linear-gradient(135deg, rgba(67, 209, 158, 0.95), rgba(47, 189, 238, 0.85));
    color: #041015;
    box-shadow: 0 20px 38px rgba(50, 200, 190, 0.4), inset 0 1px 0 rgba(255,255,255,0.28);
}
.pricing-card.infinite .btn-primary:hover {
    box-shadow: 0 26px 48px rgba(50, 200, 190, 0.5), inset 0 1px 0 rgba(255,255,255,0.3);
}

/* Premium button animation */
.btn-premium {
  position: relative;
  overflow: hidden;
}
.btn-premium::after {
  content: '';
  position: absolute;
  top: -50%; left: -30%;
  width: 60%; height: 200%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.35), transparent);
  transform: skewX(-20deg);
  opacity: 0;
  transition: opacity .25s ease, transform .6s ease;
}
.btn-premium:hover::after {
  opacity: 1;
  transform: translateX(260%) skewX(-20deg);
}
.btn-premium:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

/* Modern search button style */
.search-button {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 0.98rem;
    padding: 0.65rem 1.05rem;
    min-width: 180px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(189, 200, 255, 0.25);
    background: linear-gradient(180deg, rgba(27, 35, 58, 0.85), rgba(18, 25, 44, 0.92));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 12px 24px rgba(12, 16, 34, 0.4);
    color: rgba(235, 240, 255, 0.92);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    white-space: nowrap;
    flex-shrink: 0;
}

.search-button svg {
    opacity: 0.85;
    color: rgba(235, 240, 255, 0.86);
}

.search-button svg path {
    stroke-linecap: round;
    stroke-linejoin: round;
}

.search-button .command-key {
    margin-left: auto;
    padding: 0.2rem 0.55rem;
    border-radius: var(--radius-pill);
    background: rgba(5, 8, 18, 0.6);
    border: 1px solid rgba(189, 200, 255, 0.22);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
    font-size: 0.82rem;
    color: rgba(224, 230, 255, 0.8);
    letter-spacing: 0.08em;
}

.search-button:hover {
    transform: translateY(-2px);
    border-color: rgba(189, 200, 255, 0.35);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.18), 0 18px 34px rgba(12, 16, 34, 0.48);
}

.search-button:active {
    transform: translateY(0);
}

/* Search overlay */
.search-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: flex-start;
    justify-content: center;
    backdrop-filter: blur(0px);
    background: rgba(10, 11, 15, 0);
    z-index: 11000;
    transition: backdrop-filter 0.25s ease, background 0.25s ease;
}

.search-overlay.active {
    display: flex;
    backdrop-filter: blur(12px);
    background: rgba(10, 11, 15, 0.6);
}

.search-panel {
    width: min(800px, 92%);
    margin-top: clamp(6vh, 10vh, 14vh);
    background: linear-gradient(180deg, rgba(18, 24, 42, 0.94), rgba(10, 14, 26, 0.92));
    border: 1px solid rgba(189, 200, 255, 0.18);
    border-radius: var(--radius-xl);
    box-shadow: 0 35px 65px rgba(4, 8, 20, 0.55), inset 0 1px 0 rgba(255,255,255,0.06);
    overflow: hidden;
}

/* Generate modal custom UI */
.gen-panel { width: min(900px, 95%); }
.gen-header { display:flex; align-items:center; justify-content: space-between; padding: 1rem 1.25rem; border-bottom: 1px solid var(--border-color); }
.gen-header h3 { margin: 0; font-size: 1.15rem; }
.gen-form { padding: 1rem 1.25rem; display:flex; flex-direction: column; gap: 1rem; }
.gen-row { display:grid; grid-template-columns: 1fr 280px; gap: 1rem; }
.gen-field { display:flex; flex-direction: column; gap: 0.4rem; }
.gen-label { color: var(--text-secondary); font-size: 0.9rem; }
.gen-input { background: var(--card-bg); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 12px; padding: 0.7rem 0.8rem; }
.gen-textarea { background: var(--card-bg); border: 1px solid var(--border-color); color: var(--text-primary); border-radius: 12px; padding: 0.8rem; resize: vertical; min-height: 140px; }
.gen-diff-pills { display:flex; gap: 0.4rem; }
.gen-diff-pills .pill { padding: 0.45rem 0.8rem; border-radius: 999px; border: 1px solid var(--border-color); background: var(--glass-bg); color: var(--text-primary); cursor: pointer; }
.gen-diff-pills .pill.active { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); border-color: transparent; }
.gen-chipbar { display:flex; gap: 0.4rem; flex-wrap: wrap; }
.gen-chip { padding: 0.35rem 0.7rem; border-radius: 999px; border: 1px solid var(--border-color); background: var(--glass-bg); color: var(--text-primary); cursor: pointer; }
.gen-chip:hover { background: rgba(255,255,255,0.12); }
.gen-actions { display:flex; justify-content:flex-end; padding: 0.75rem 1.0rem; border-top: 1px solid var(--border-color); }

/* Fullscreen AI loading overlay */
.ai-loading { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; backdrop-filter: blur(12px); background: rgba(10,11,15,0.65); z-index: 1400; }
.ai-loading.active { display: flex; }
.ai-loading-inner { display:flex; flex-direction: column; align-items: center; gap: 0.85rem; background: var(--secondary-bg); border: 1px solid var(--border-color); border-radius: 16px; padding: 1.5rem 1.75rem; box-shadow: var(--shadow-xl); animation: scaleIn 180ms ease; }
.ai-spinner { animation: spin 1s linear infinite; }
.ai-loading-text { color: var(--text-primary); font-weight: 600; letter-spacing: 0.2px; }
/* Circular progress inside AI overlay */
.ai-circle-wrap { margin-top: 4px; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes scaleIn { from { transform: scale(0.96); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.search-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 0.85rem 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.65rem 0.75rem;
}

.search-input-wrap svg { color: var(--text-secondary); }

.search-input-wrap input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-size: 1rem;
}

.search-cancel {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
}

/* iOS-like list */
.ios-list {
    max-height: 50vh;
    overflow: auto;
    padding: 0.25rem 0;
}

/* Lessons Page UI */
/* TTS replay button small spacing */
.tts-replay-btn { display:inline-flex; align-items:center; gap:.4rem; }

/* TTS volume controls */
.tts-controls-container {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  isolation: isolate;
}

.tts-mute-btn {
  width: 40px;
  height: 40px;
  min-height: auto;
  padding: 0.45rem;
  border-radius: var(--radius-lg, 12px);
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
  background: linear-gradient(
    145deg,
    color-mix(in oklab, var(--accent-soft, rgba(244, 244, 245, 0.1)) 100%, transparent),
    color-mix(in oklab, var(--bg-surface-2, #18181b) 90%, transparent)
  );
  box-shadow: var(--shadow-md, 0 10px 28px rgba(0, 0, 0, 0.32)),
    inset 0 1px 0 var(--border-subtle, rgba(255, 255, 255, 0.055));
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.2s ease,
    border-color 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}

.tts-mute-btn svg {
  pointer-events: none;
  width: 16px;
  height: 16px;
  display: block;
}

.tts-mute-btn:hover,
.tts-controls-container.tts-volume-visible .tts-mute-btn {
  transform: translateY(-1px);
  background: linear-gradient(
    145deg,
    color-mix(in oklab, var(--accent-soft, rgba(244, 244, 245, 0.12)) 100%, transparent),
    color-mix(in oklab, var(--bg-surface-3, #27272a) 88%, transparent)
  );
  border-color: var(--border-strong, rgba(255, 255, 255, 0.17));
  box-shadow: var(--shadow-md, 0 10px 28px rgba(0, 0, 0, 0.32)),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.tts-controls-container.tts-muted .tts-mute-btn {
  background: linear-gradient(
    145deg,
    var(--bg-surface-1, #18181b),
    color-mix(in oklab, var(--bg-app, #09090b) 85%, var(--bg-surface-2, #18181b))
  );
  border-color: var(--border-subtle, rgba(255, 255, 255, 0.055));
  box-shadow: var(--shadow-sm, 0 6px 20px rgba(0, 0, 0, 0.28)),
    inset 0 1px 0 transparent;
}

/* Fixed to viewport so scrollable shell / lesson cards do not clip the popover */
.tts-volume-wrapper {
  position: fixed;
  left: 0;
  top: 0;
  right: auto;
  opacity: 0;
  transform: translateX(-50%) translateY(6px) scale(0.96);
  transition: opacity 0.18s ease, transform 0.22s cubic-bezier(0.215, 0.61, 0.355, 1);
  pointer-events: none;
  z-index: 12000;
}

.tts-volume-wrapper.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
  pointer-events: auto;
}

.tts-volume-popover {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-lg, 12px);
  background: linear-gradient(
    145deg,
    color-mix(in oklab, var(--bg-surface-2, #1f1f23) 94%, transparent),
    color-mix(in oklab, var(--bg-surface-3, #27272a) 92%, transparent)
  );
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
  box-shadow: var(--shadow-md, 0 10px 28px rgba(0, 0, 0, 0.32)),
    inset 0 1px 0 var(--border-subtle, rgba(255, 255, 255, 0.055));
  backdrop-filter: blur(12px);
}

.volume-icon {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  color: var(--text-secondary, #a1a1aa);
  transition: color 0.18s ease, opacity 0.18s ease;
}

.volume-icon svg {
  width: 13px;
  height: 13px;
  display: block;
}

.tts-controls-container.tts-muted .volume-icon {
  opacity: 0.55;
}

.volume-slider {
  --value: 50%;
  width: 120px;
  height: 5px;
  -webkit-appearance: none;
  appearance: none;
  border-radius: var(--radius-pill, 999px);
  padding: 0;
  margin: 0.2rem 0;
  outline: none;
  cursor: pointer;
  touch-action: none;
  position: relative;
  align-self: center;
  background: linear-gradient(
    90deg,
    var(--accent, #d4d4d8) 0%,
    var(--accent-hover, #e4e4e7) var(--value),
    var(--bg-surface-4, #2f2f33) var(--value)
  );
  box-shadow: inset 0 0 0 1px var(--border-subtle, rgba(255, 255, 255, 0.055));
  transition: box-shadow var(--motion-fast, 140ms) var(--ease-standard, ease);
}

.volume-slider:focus-visible {
  box-shadow: inset 0 0 0 1px var(--border-subtle, rgba(255, 255, 255, 0.055)),
    var(--focus-ring, 0 0 0 2px rgba(212, 212, 216, 0.28));
}

.volume-slider::-webkit-slider-runnable-track {
  height: 5px;
  border-radius: var(--radius-pill, 999px);
  background: transparent;
}

.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--cta-bg, #f4f4f5);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  border: 1px solid var(--border-strong, rgba(255, 255, 255, 0.17));
  transition: transform var(--motion-fast, 140ms) var(--ease-standard, ease),
    box-shadow var(--motion-fast, 140ms) var(--ease-standard, ease);
  margin-top: -3px;
}

.volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.06);
  background: var(--accent-hover, #e4e4e7);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.volume-slider::-webkit-slider-thumb:active {
  transform: scale(0.96);
}

.volume-slider::-moz-range-track {
  height: 5px;
  border-radius: var(--radius-pill, 999px);
  background: transparent;
}

.volume-slider::-moz-range-thumb {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 1px solid var(--border-strong, rgba(255, 255, 255, 0.17));
  background: var(--cta-bg, #f4f4f5);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: transform var(--motion-fast, 140ms) var(--ease-standard, ease),
    box-shadow var(--motion-fast, 140ms) var(--ease-standard, ease);
  cursor: pointer;
}

.volume-slider::-moz-range-thumb:hover {
  transform: scale(1.06);
  background: var(--accent-hover, #e4e4e7);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.volume-slider::-moz-range-thumb:active {
  transform: scale(0.96);
}

.volume-slider::after {
  content: attr(value) '%';
  position: absolute;
  top: -22px;
  left: var(--value, 50%);
  transform: translateX(-50%);
  background: var(--bg-surface-3, #27272a);
  color: var(--text-secondary, #a1a1aa);
  border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
  padding: 1px 6px;
  border-radius: var(--radius-pill, 999px);
  font-size: 0.6rem;
  letter-spacing: 0.02em;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-fast, 140ms) ease,
    transform var(--motion-fast, 140ms) ease;
}

.volume-slider:focus-visible::after,
.volume-slider:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}


@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-50%) translateX(-0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Settings layout */
.settings-container {
    max-width: 900px;
    margin: 2.5rem auto;
    padding: 0 1.5rem 3rem;
}
.settings-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.8rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.settings-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.settings-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}
.settings-field {
    margin-bottom: 1.4rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Preference toggles: label + control in a row (overrides column above) */
.settings-field.settings-preference-row {
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: flex-start;
    gap: 0.65rem 0.85rem;
    margin-bottom: 0.55rem;
    padding-bottom: 0.55rem;
    border-bottom: 1px solid var(--border-color, rgba(255, 255, 255, 0.06));
}

.settings-field.settings-preference-row:last-of-type {
    border-bottom: none;
    margin-bottom: 0.35rem;
}
.settings-label {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}
.settings-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--text-base);
}
.settings-input:focus {
    outline: none;
    border-color: rgba(102,126,234,0.45);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}
.settings-hint {
    font-size: var(--text-xs);
    color: var(--text-muted);
}
.settings-actions {
    display: flex;
    gap: 1rem;
    row-gap: 0.85rem;
    flex-wrap: wrap;
    margin-top: 2rem;
    padding-top: 0.35rem;
}

.settings-actions .btn-primary,
.settings-actions .btn-secondary {
    min-height: 44px;
    padding: 0.6rem 1.35rem;
}
.success-message {
    background: rgba(16,185,129,0.15);
    color: #d1fae5;
    border: 1px solid #10b98155;
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    display: none;
}
.success-message.show {
    display: block;
}
.settings-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.settings-cta-text {
    max-width: 60ch;
}
.settings-cta .settings-title {
    margin-bottom: 0.25rem;
}
.settings-cta-button {
    padding: 0.9rem 1.4rem;
    font-size: 1.05rem;
    border-radius: 14px;
    white-space: nowrap;
}

/* Styled selects and checkboxes to match UI */
.settings-container select.settings-input { appearance: none; background-image: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04)); }
.settings-container .settings-field { position: relative; }

/* Custom checkbox (settings forms only — not preference switches) */
.settings-container input[type="checkbox"]:not(.settings-preference-check) {
  -webkit-appearance: none;
  appearance: none;
  width: 20px; height: 20px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: var(--glass-bg);
  display: inline-block;
  position: relative;
  vertical-align: middle;
  margin-right: 8px;
}
.settings-container input[type="checkbox"]:not(.settings-preference-check):checked {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  border-color: transparent;
}
.settings-container input[type="checkbox"]:not(.settings-preference-check):checked::after {
  content: '';
  position: absolute;
  left: 6px; top: 2px;
  width: 6px; height: 10px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* Preference row: compact horizontal toggle */
.settings-container .settings-preference-check {
  -webkit-appearance: none;
  appearance: none;
  width: 2.4rem;
  min-width: 2.4rem;
  height: 1.3rem;
  margin: 0.12rem 0 0;
  padding: 0;
  flex-shrink: 0;
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.14));
  border-radius: 0.42rem;
  background: color-mix(in oklab, var(--border-color, #3f3f46) 70%, var(--card-bg, #09090b));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  cursor: pointer;
  position: relative;
  transition: background 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.settings-container .settings-preference-check:hover {
  border-color: color-mix(in oklab, var(--accent-primary, #667eea) 22%, var(--border-color));
}

.settings-container .settings-preference-check:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--accent-primary, #667eea) 55%, transparent);
  outline-offset: 2px;
}

.settings-container .settings-preference-check::after {
  content: '';
  position: absolute;
  left: 2px;
  top: 50%;
  width: 0.82rem;
  height: 0.82rem;
  border-radius: 0.24rem;
  background: #f4f4f5;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.32);
  transform: translateY(-50%);
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
}

.settings-container .settings-preference-check:checked {
  background: linear-gradient(135deg, var(--accent-primary, #667eea), var(--accent-secondary, #764ba2));
  border-color: color-mix(in oklab, var(--accent-primary, #667eea) 55%, transparent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.settings-container .settings-preference-check:checked::after {
  transform: translateY(-50%) translateX(1.08rem);
}

.settings-container .settings-preference-copy {
  flex: 1;
  min-width: 0;
}

.settings-container .settings-preference-title {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  line-height: 1.3;
  margin: 0;
}

.settings-container .settings-preference-hint {
  margin: 0.2rem 0 0;
  max-width: 40rem;
  line-height: 1.4;
  font-size: 0.78rem;
}

/* Preview voice — compact secondary control */
.settings-container #previewVoiceBtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 0;
  padding: 0.45rem 0.85rem;
  font-weight: 500;
  font-size: 0.8125rem;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-color, rgba(255, 255, 255, 0.12));
  background: color-mix(in oklab, var(--glass-bg, rgba(255, 255, 255, 0.04)) 100%, transparent);
  color: var(--text-primary);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.settings-container #previewVoiceBtn:hover {
  border-color: color-mix(in oklab, var(--accent-primary, #667eea) 40%, var(--border-color));
  background: color-mix(in oklab, var(--bg-surface-2, #18181b) 88%, transparent);
}

.settings-container #previewVoiceBtn:active {
  opacity: 0.92;
}

.settings-container #previewVoiceBtn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

/* Consistent select styling across lesson matching selects */
.lesson-flow-card select.right-select {
  appearance: none;
  background: var(--glass-bg);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 10px; padding: 0.4rem 0.6rem;
}
.lesson-hero {
    margin: 1rem auto 2rem;
    max-width: 1100px;
}

.lesson-hero-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 1rem;
    align-items: center;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
}

.lesson-hero-logo-wrap {
    display: inline-flex;
}

.lesson-hero-logo {
    width: 64px;
    height: 64px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    border: 1px solid var(--border-color);
    font-size: 36px;
}

.lesson-hero-meta h4 {
    font-size: 1.25rem;
    margin-bottom: 0.25rem;
}

.lesson-hero-meta p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.lesson-hero-stats {
    display: flex;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.lessons-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat( auto-fill, minmax(260px, 1fr) );
    gap: 1rem;
}

/* Lesson flow page */
.lesson-topbar {
    max-width: 1100px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* hearts removed in supportive flow */

.step-progress { display: flex; align-items: center; gap: 0.5rem; }
.step-progress-track {
    width: 200px; height: 8px; border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.06); border-radius: 999px; overflow: hidden;
}
.step-progress-bar {
    height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}
.step-progress-label { color: var(--text-secondary); font-size: 0.85rem; }

.lesson-stage { max-width: 900px; margin: 0 auto; overflow: visible; }
.lesson-flow-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    animation: lessonFadeIn 250ms ease;
    font-size: var(--text-base);
    overflow: visible;
}
.lesson-flow-card h4 { 
    margin-bottom: 0.75rem; 
    font-size: var(--text-xl);
    font-weight: 600;
}
.lesson-flow-card p { 
    color: var(--text-secondary); 
    margin-bottom: 1rem; 
    font-size: var(--text-base);
    line-height: 1.7;
}
.lesson-flow-card .input {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.6rem 0.8rem;
    font-family: 'Fira Code', monospace;
}

/* lightweight token colors */
.tok-kw { color: #93c5fd; }         /* blue keywords */
.tok-str { color: #fca5a5; }        /* red-ish strings */
.tok-cmt { color: #9ca3af; font-style: italic; } /* gray comments */
.lesson-flow-card .options { display: grid; gap: 0.5rem; margin-top: 0.5rem; }
.lesson-flow-card .opt {
    text-align: left; padding: 0.6rem 0.8rem; border-radius: 10px; border: 1px solid var(--border-color);
    background: var(--glass-bg); color: var(--text-primary);
    cursor: pointer; transition: transform .15s ease, background .15s ease;
}
.lesson-flow-card .opt:hover { transform: translateY(-1px); background: rgba(255,255,255,0.12); }
.lesson-flow-card .opt.wrong-answer { 
    background: rgba(239,68,68,0.15); 
    border-color: rgba(239,68,68,0.35); 
    opacity: 0.6;
    cursor: not-allowed;
}
.lesson-flow-card .opt.wrong-answer:hover { 
    transform: none; 
    background: rgba(239,68,68,0.15); 
}

/* Toast-style feedback with motion */
.feedback-toast { position: fixed; left: 50%; top: 18px; transform: translateX(-50%) translateY(-10px); padding: 12px 16px; border-radius: 12px; border: 1px solid var(--border-color); z-index: 2200; box-shadow: var(--shadow-lg); animation: toastIn 200ms ease; backdrop-filter: blur(10px); }
.feedback-success { background: rgba(16,185,129,0.15); color: #d1fae5; border-color: #10b98155; }
.feedback-error   { background: rgba(239,68,68,0.15); color: #fecaca; border-color: #ef444455; }
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(-14px) scale(0.98);} to { opacity: 1; transform: translateX(-50%) translateY(0) scale(1);} }
.match-grid { display: grid; gap: 0.5rem; margin-top: 0.5rem; }
.match-row { display: grid; grid-template-columns: 1fr auto; gap: 0.75rem; align-items: center; }
.match-row .left { font-family: 'Fira Code', monospace; }
.match-row select {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px; padding: 0.4rem 0.6rem;
}

.demo-code { background: rgba(255,255,255,0.06); border: 1px solid var(--border-color); padding: 0.75rem; border-radius: 10px; overflow: auto; white-space: pre-wrap; }
.inline-code { font-family: 'Fira Code', monospace; background: rgba(255,255,255,0.07); border: 1px solid var(--border-color); border-radius: 6px; padding: 0.05rem 0.35rem; display: inline; white-space: pre-wrap; }
.demo-header { display:flex; align-items:center; justify-content: space-between; gap: 0.5rem; }
.demo-toggle { display:flex; gap:0.25rem; }
.demo-toggle-btn { padding: 0.35rem 0.65rem; border-radius: 999px; border: 1px solid var(--border-color); background: var(--glass-bg); color: var(--text-primary); cursor: pointer; }
.demo-toggle-btn.active { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); border-color: transparent; }
.demo-preview { background: rgba(255,255,255,0.06); border: 1px solid var(--border-color); border-radius: 10px; padding: 0; overflow: hidden; }
.preview-frame { width: 100%; height: 320px; border: 0; background: #fff; }
.hidden { display:none; }
.hint { color: var(--text-secondary); font-size: 0.9rem; margin: 0.25rem 0 0.5rem; }
.listen-box { background: rgba(255,255,255,0.06); border: 1px solid var(--border-color); border-radius: 10px; padding: 0.75rem; margin-bottom: 0.5rem; }

/* Ask a Question Widget */
.ask-question-widget {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(125, 127, 255, 0.08);
  border: 1px solid rgba(125, 127, 255, 0.25);
  border-radius: var(--radius-md);
}

.ask-question-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.ask-question-header svg {
  width: 18px;
  height: 18px;
  opacity: 0.9;
}

.ask-question-input-wrapper {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.ask-question-input {
  flex: 1;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  border-radius: 10px;
  padding: 0.65rem 0.85rem;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.ask-question-input:focus {
  outline: none;
  border-color: rgba(125, 127, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

.ask-question-input::placeholder {
  color: var(--text-muted);
}

.ask-question-btn {
  padding: 0.65rem 1.2rem;
  background: linear-gradient(135deg, rgba(125, 127, 255, 0.85), rgba(159, 92, 255, 0.75));
  color: #fff;
  border: 1px solid rgba(189, 200, 255, 0.25);
  border-radius: 10px;
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  white-space: nowrap;
}

.ask-question-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(125, 127, 255, 0.35);
}

.ask-question-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.ask-question-answer {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.6;
  animation: fadeInAnswer 0.3s ease;
}

/* Error state: themed in app-theme.css for html.codii-app */
.ask-question-error {
  border-style: solid;
}

.ask-question-loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.ask-question-loading-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(125, 127, 255, 0.2);
  border-top-color: rgba(125, 127, 255, 0.8);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes fadeInAnswer {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes lessonFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.lesson-card {
    position: relative;
    background: linear-gradient(180deg, rgba(16, 22, 38, 0.92), rgba(10, 14, 26, 0.94));
    border: 1px solid rgba(189, 200, 255, 0.16);
    border-radius: var(--radius-lg);
    padding: 1.1rem 1.2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    box-shadow: 0 14px 32px rgba(5, 9, 22, 0.45), inset 0 1px 0 rgba(255,255,255,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    overflow: hidden;
}

.lesson-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lifted);
    border-color: rgba(189, 200, 255, 0.28);
}

.lesson-card-header {
    display: grid;
    grid-template-columns: max-content 1fr max-content;
    align-items: start;
    column-gap: 0.5rem;
}

.ai-tag {
    margin-left: auto;
    margin-right: 0;
    font-size: 0.72rem;
    color: rgba(147,197,253,0.92);
    background: rgba(147,197,253,0.12);
    border: 1px solid rgba(147,197,253,0.35);
    border-radius: 999px;
    padding: 0.25rem 0.65rem;
    letter-spacing: 0.08em;
}

.lesson-number {
    background: rgba(10, 14, 26, 0.6);
    border: 1px solid rgba(189, 200, 255, 0.2);
    padding: 0.3rem 0.6rem;
    border-radius: 10px;
    color: rgba(224, 230, 255, 0.8);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.lesson-title {
    font-weight: 600;
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    white-space: normal;
    word-break: break-word;
    min-width: 0;
    line-height: 1.25;
    font-size: clamp(0.95rem, 1.6vw, 1.1rem);
}

.lesson-card-meta {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.lesson-meta-pill {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.8rem;
}

.lesson-meta-pill.level-pill {
    font-weight: 600;
    color: #4f46e5;
    border-color: rgba(79,70,229,0.45);
    background: rgba(79,70,229,0.15);
}

.lesson-meta-pill.diff-pill {
    font-weight: 600;
    letter-spacing: .01em;
    text-transform: uppercase;
}
.lesson-meta-pill.diff-pill.diff-easy {
    color: #22c55e;
    border-color: rgba(34,197,94,0.4);
    background: rgba(34,197,94,0.12);
}
.lesson-meta-pill.diff-pill.diff-medium {
    color: #f59e0b;
    border-color: rgba(245,158,11,0.4);
    background: rgba(245,158,11,0.12);
}
.lesson-meta-pill.diff-pill.diff-hard {
    color: #ef4444;
    border-color: rgba(239,68,68,0.4);
    background: rgba(239,68,68,0.12);
}

.lesson-meta-pill.in_progress {
    color: #f59e0b;
    border-color: #f59e0b55;
}

.lesson-meta-pill.completed {
    color: #10b981;
    border-color: #10b98155;
}

/* Settings page */
.settings-layout {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
    max-width: 880px;
    margin: 0 auto;
}

.settings-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 1.6rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.settings-card h2 {
    margin: 0;
    font-size: 1.4rem;
    font-weight: 600;
}

.settings-note {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.5;
    font-size: 0.95rem;
}

.settings-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.settings-input {
    width: 100%;
    padding: 0.65rem 0.8rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background: var(--glass-bg);
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.settings-input:focus {
    border-color: rgba(99,102,241,0.55);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
    outline: none;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.settings-actions {
    display: flex;
    gap: 1rem;
    row-gap: 0.85rem;
    flex-wrap: wrap;
    padding-top: 0.25rem;
}

.settings-actions .btn-primary,
.settings-actions .btn-secondary {
    min-height: 44px;
    padding: 0.6rem 1.35rem;
}

.toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.65rem 0.9rem;
}

.toggle-row label {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.toggle-title {
    font-weight: 600;
}

.toggle-subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.toggle-input {
    width: 20px;
    height: 20px;
    accent-color: #4f46e5;
}

.log-actions {
    display: flex;
    gap: 0.6rem;
}

.log-container {
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 0.9rem;
    max-height: 300px;
    overflow-y: auto;
}

.log-empty {
    color: var(--text-secondary);
    font-size: 0.95rem;
    text-align: center;
    padding: 0.8rem 0;
}

.log-entry {
    border-bottom: 1px solid var(--border-color);
    padding: 0.65rem 0;
}

.log-entry:last-child {
    border-bottom: none;
}

.log-entry-title {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    font-size: 0.95rem;
}

.log-entry-message {
    margin-top: 0.25rem;
    color: var(--text-primary);
}

.log-entry-detail {
    margin-top: 0.4rem;
    background: rgba(15, 23, 42, 0.4);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
}

.lesson-progress {
    position: relative;
    height: 10px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    overflow: hidden;
}

.lesson-progress-bar {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.3s ease;
}

.lesson-progress-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.lesson-actions {
    margin-top: 0.25rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Option buttons in exercises */
.options .opt.disabled {
    opacity: 0.55;
    pointer-events: none;
    filter: saturate(0.6);
}

/* Compact variant for AI generator card */
.ai-generator-card {
    gap: 0.5rem;
}
.ai-generator-card .lesson-card-meta { gap: 0.4rem; }
.ai-generator-card .lesson-meta-pill { font-size: 0.78rem; padding: 0.2rem 0.45rem; }
.ai-generator-card .lesson-actions { margin-top: 0.25rem; }
.ai-generator-card .btn-primary { padding: 0.5rem 0.9rem; border-radius: 999px; }

/* Polished buttons for lessons */
.lesson-actions .btn-primary {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.4);
    color: rgba(255, 255, 255, 0.95);
    border-radius: 999px;
    padding: 0.6rem 1.1rem;
    text-shadow: none;
    box-shadow: none;
    font-weight: 600;
    transition: all 0.22s ease;
}

.lesson-actions .btn-primary:hover {
    border-color: rgba(255, 255, 255, 0.7);
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.lesson-card .btn-secondary {
    border-radius: 999px;
}

.ios-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.2s ease;
}

.ios-item:hover { background: var(--glass-bg); }

.ios-item .ios-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.ios-item .ios-meta {
    display: flex;
    flex-direction: column;
}

.ios-meta .ios-title { font-weight: 600; }
.ios-meta .ios-sub { color: var(--text-secondary); font-size: 0.85rem; }


/* Themed text inputs (used by GitHub import) */
.settings-input {
    width: 100%;
    padding: 0.65rem 0.9rem;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: var(--text-base);
    outline: none;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.settings-input::placeholder { color: var(--text-secondary); opacity: 0.85; }
.settings-input:focus {
    border-color: rgba(102,126,234,0.5);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}

/* Input with leading icon */
.input-with-icon { position: relative; display: flex; align-items: center; }
.input-with-icon .settings-input { padding-left: 2.2rem; }
.input-with-icon .input-icon { position: absolute; left: .6rem; top: 50%; transform: translateY(-50%); color: var(--text-secondary); opacity: .9; pointer-events: none; font-size: 1.1rem; }

/* Main Content */
.main-content {
    width: min(1240px, 100%);
    margin: 0 auto;
    padding: clamp(2.6rem, 3vw, 3.2rem) clamp(1.5rem, 4vw, 2.6rem) clamp(3.2rem, 5vw, 4.5rem);
    display: flex;
    flex-direction: column;
    gap: clamp(2.6rem, 4vw, 4rem);
}

/* Welcome Section */
.welcome-section {
    margin: 0;
}

.welcome-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: clamp(2rem, 4vw, 3.1rem);
    padding: clamp(2.1rem, 4vw, 3.1rem);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-strong);
    background: linear-gradient(160deg, rgba(29, 40, 68, 0.96) 0%, rgba(17, 23, 40, 0.95) 40%, rgba(10, 15, 26, 0.94) 100%);
    box-shadow: var(--shadow-high);
    overflow: hidden;
    isolation: isolate;
}

.welcome-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0) 45%);
    pointer-events: none;
    mix-blend-mode: screen;
}

.welcome-card::after {
    content: '';
    position: absolute;
    inset: -40% -30% 35%;
    background:
        radial-gradient(circle at 18% 18%, rgba(125, 127, 255, 0.22) 0%, transparent 55%),
        radial-gradient(circle at 82% 26%, rgba(57, 208, 255, 0.24) 0%, transparent 52%);
    opacity: 0.6;
    filter: blur(0px);
    pointer-events: none;
}

.welcome-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

.hero-pill {
    padding: 0.5rem 1.15rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(189, 200, 255, 0.28);
    background: linear-gradient(180deg, rgba(125, 127, 255, 0.3), rgba(125, 127, 255, 0.1));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.22);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: rgba(240, 244, 255, 0.9);
    text-transform: uppercase;
}

.hero-typewriter {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: clamp(0.75rem, 2vw, 0.95rem) clamp(1rem, 2.4vw, 1.3rem);
    border-radius: var(--radius-pill);
    background: rgba(10, 13, 26, 0.6);
    border: 1px solid rgba(189, 200, 255, 0.22);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 8px 20px rgba(5, 7, 15, 0.55);
}

.hero-logo {
    width: 32px;
    height: 32px;
    border-radius: 10px;
}

.hero-typewrap {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
    letter-spacing: 0.04em;
    color: rgba(244, 246, 255, 0.96);
}

.hero-caret { color: var(--accent-primary); animation: blink 1.4s infinite; margin-left: 2px; }

.welcome-main {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.05fr);
    gap: clamp(2.1rem, 4vw, 3.5rem);
    align-items: stretch;
    position: relative;
    z-index: 2;
}

.welcome-copy {
    display: flex;
    flex-direction: column;
    gap: clamp(1.3rem, 3vw, 2rem);
}

.welcome-copy h2 {
    font-size: clamp(2.05rem, 4.3vw, 2.6rem);
    line-height: 1.16;
    font-weight: 700;
    color: rgba(246, 247, 255, 0.98);
}

.welcome-copy p {
    font-size: clamp(1rem, 1.2vw, 1.14rem);
    color: var(--text-secondary);
    max-width: 540px;
}

.welcome-points {
    display: grid;
    gap: 0.55rem;
    padding-left: 1.35rem;
    color: rgba(226, 232, 255, 0.78);
    font-size: clamp(0.95rem, 1.05vw, 1.05rem);
    line-height: 1.6;
}

.welcome-points li {
    list-style: disc;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.45rem, 1.5vw, 0.75rem);
    row-gap: clamp(0.45rem, 1.6vw, 0.85rem);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.55rem 1rem;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(189, 200, 255, 0.25);
    background: rgba(18, 24, 44, 0.7);
    color: rgba(235, 240, 255, 0.86);
    font-size: 0.92rem;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.1);
}

.welcome-actions {
    display: flex;
    flex-wrap: wrap;
    gap: clamp(0.6rem, 2vw, 1rem);
}

.ghost-link {
    backdrop-filter: blur(8px);
    background: rgba(10, 15, 28, 0.4);
    border: 1px solid rgba(189, 200, 255, 0.22);
    color: rgba(224, 230, 255, 0.88);
}

.ghost-link:hover {
    background: rgba(18, 26, 44, 0.65);
    border-color: rgba(189, 200, 255, 0.35);
}

.welcome-illustration {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.hero-visual {
    position: relative;
    width: min(38vw, 430px);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-orb {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: clamp(24px, 3vw, 32px);
    background: linear-gradient(180deg, rgba(19, 28, 48, 0.92), rgba(8, 12, 24, 0.92));
    border: 1px solid rgba(189, 200, 255, 0.18);
    box-shadow: 0 24px 50px rgba(6, 10, 24, 0.55), inset 0 1px 0 rgba(255,255,255,0.08);
    padding: clamp(1.5rem, 2.8vw, 2rem) clamp(1.25rem, 2.5vw, 1.75rem);
    display: flex;
    flex-direction: column;
    gap: clamp(0.75rem, 2vw, 1.15rem);
    overflow: hidden;
}

.orb-glow {
    position: absolute;
    inset: 8%;
    background: radial-gradient(circle at 50% 25%, rgba(125, 127, 255, 0.25), transparent 70%);
    filter: blur(25px);
    pointer-events: none;
    z-index: 0;
}

.hero-orb .splide {
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
}

.hero-orb .splide__track {
    height: 100%;
}

.hero-orb .splide__list {
    display: flex;
    align-items: center;
    height: 100%;
}

.hero-orb .splide__slide {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-float {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.25rem 1.5rem;
    border-radius: 20px;
    border: 1px solid rgba(125, 127, 255, 0.35);
    background: linear-gradient(135deg, rgba(24, 31, 56, 0.95), rgba(16, 22, 40, 0.92));
    backdrop-filter: blur(16px);
    box-shadow: 0 12px 32px rgba(6, 10, 24, 0.45), inset 0 1px 0 rgba(255,255,255,0.1);
    color: rgba(245, 250, 255, 0.95);
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.hero-float > * {
    position: relative;
    z-index: 1;
}

.hero-float::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.15), rgba(159, 92, 255, 0.08));
    opacity: 0.6;
    pointer-events: none;
}

.hero-float::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, rgba(125, 127, 255, 0.9), rgba(159, 92, 255, 0.75), rgba(57, 208, 255, 0.6));
    opacity: 1;
    border-radius: 20px 20px 0 0;
}

.hero-float--goal,
.hero-float--coach {
    display: flex;
    align-items: flex-start;
}

.hero-float--goal {
    position: relative;
    margin-top: 1.5rem;
    width: 100%;
    max-width: 100%;
}

.hero-float--coach {
    bottom: 12%;
    left: -14%;
}

.hero-float--goal .hero-float__label,
.hero-float--coach .hero-float__label {
    color: rgba(171, 208, 255, 0.78);
    letter-spacing: 0.12em;
}

.hero-float--goal .hero-float__meta,
.hero-float--coach .hero-float__meta {
    color: rgba(235, 240, 255, 0.88);
    font-weight: 500;
}

.hero-float__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(171, 208, 255, 0.75);
}

.hero-float__value {
    font-size: clamp(1.75rem, 3.5vw, 2.15rem);
    font-weight: 700;
    color: rgba(245, 250, 255, 0.98);
    background: linear-gradient(135deg, #ffffff, rgba(125, 127, 255, 0.95));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero-float__meta {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(220, 230, 255, 0.8);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.language-logo-animated {
  animation: floatGentle 6s ease-in-out infinite;
}

@keyframes floatGentle {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    25% {
        transform: translateY(-15px) rotate(2deg);
    }
    50% {
        transform: translateY(-8px) rotate(-2deg);
    }
    75% {
        transform: translateY(-12px) rotate(1deg);
    }
}

.hero-depth-bar {
    position: relative;
    width: 100%;
    height: 7px;
    border-radius: 999px;
    background: rgba(15, 20, 34, 0.85);
    border: 1px solid rgba(189, 200, 255, 0.18);
    overflow: hidden;
}
.hero-depth-bar::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(180deg, rgba(255,255,255,0.12), rgba(255,255,255,0));
    opacity: 0.6;
}

.hero-depth-bar span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    box-shadow: 0 0 12px rgba(125, 127, 255, 0.6);
}

.hero-metrics {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(0.75rem, 2vw, 1.1rem);
    position: relative;
    z-index: 2;
}

.metric-card {
    padding: clamp(1rem, 2.2vw, 1.45rem) clamp(1.1rem, 2.4vw, 1.55rem);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(189, 200, 255, 0.18);
    background: rgba(12, 18, 34, 0.78);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
    display: flex;
    flex-direction: column;
    gap: clamp(0.25rem, 1vw, 0.45rem);
}

.metric-label {
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.metric-value {
    font-size: clamp(1.32rem, 2.5vw, 1.48rem);
    font-weight: 600;
    color: rgba(242, 244, 255, 0.95);
}

.metric-delta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.metric-delta.positive {
    color: var(--success);
}

.metric-delta.neutral {
    color: rgba(235, 240, 255, 0.78);
}

/* Splide carousel adjustments */
.splide {
    width: 100%;
}

.splide__track {
    overflow: hidden;
}

.splide__list {
    align-items: center;
}

.splide__slide {
    display: flex;
    justify-content: center;
    padding: 1rem;
}

.code-snippet {
    position: relative;
    padding: 1rem 1.2rem;
    font-family: 'Fira Code', 'Consolas', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 1rem;
    line-height: 1.4;
    color: rgba(240, 244, 255, 0.92);
    background: linear-gradient(180deg, rgba(14, 19, 34, 0.92), rgba(8, 12, 24, 0.85));
    border: 1px solid rgba(189, 200, 255, 0.18);
    border-radius: var(--radius-lg);
    box-shadow: 0 14px 28px rgba(4, 8, 20, 0.4), inset 0 1px 0 rgba(255,255,255,0.08);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    z-index: 1;
}

.code-snippet::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(125, 127, 255, 0.18), rgba(125, 127, 255, 0));
    opacity: 0.55;
    pointer-events: none;
}

.code-snippet::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05);
    pointer-events: none;
}

.code-snippet:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(4, 8, 22, 0.55);
    border-color: rgba(189, 200, 255, 0.3);
}

@keyframes blink {
    0%, 50% { opacity: 0.9; }
    51%, 100% { opacity: 0; }
}

.code-keyword { 
    color: #c5a5ff; 
    font-weight: 600; 
    text-shadow: 0 0 8px rgba(197, 165, 255, 0.35);
}

.code-function { 
    color: #87b7ff; 
    font-weight: 500;
}

.code-bracket { 
    color: #ffd580; 
    font-weight: 400;
}

.code-string { 
    color: #aef4c4; 
    font-style: italic;
}

.code-number { 
    color: #ff9d81; 
    font-weight: 500;
}

.code-comment { 
    color: #5a6a85; 
    font-style: italic; 
    opacity: 0.8;
}

.code-operator { 
    color: #89ddff; 
    font-weight: 500;
}

.code-variable { 
    color: #f0f4ff; 
    font-weight: 400;
}

/* Splide carousel adjustments */
.splide {
    width: 100%;
}

.splide__track {
    overflow: hidden;
}

.splide__list {
    align-items: center;
}

.splide__slide {
    display: flex;
    justify-content: center;
}

.code-snippet {
    padding: 1rem 1.5rem;
    font-family: 'Fira Code', 'Consolas', 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.875rem;
    font-weight: 400;
    line-height: 1.4;
    white-space: nowrap;
    opacity: 0.85;
    transition: all 0.3s ease;
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
    min-height: 44px;
}

.code-snippet::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.6;
}

.code-snippet::after {
    content: '|';
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-primary);
    font-weight: bold;
    animation: blink 1.5s infinite;
    opacity: 0.8;
}

@keyframes blink {
    0%, 50% { opacity: 0.8; }
    51%, 100% { opacity: 0; }
}

.code-snippet:hover {
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Enhanced syntax highlighting */
.code-keyword { 
    color: #c792ea; 
    font-weight: 600; 
    text-shadow: 0 0 8px rgba(199, 146, 234, 0.3);
}

.code-function { 
    color: #82aaff; 
    font-weight: 500;
    text-shadow: 0 0 8px rgba(130, 170, 255, 0.3);
}

.code-bracket { 
    color: #ffcb6b; 
    font-weight: 400;
}

.code-string { 
    color: #c3e88d; 
    font-style: italic;
    text-shadow: 0 0 8px rgba(195, 232, 141, 0.3);
}

.code-number { 
    color: #f78c6c; 
    font-weight: 500;
}

.code-comment { 
    color: #546e7a; 
    font-style: italic; 
    opacity: 0.8;
}

.code-operator { 
    color: #89ddff; 
    font-weight: 500;
}

.code-variable { 
    color: #eeffff; 
    font-weight: 400;
}

/* Language-specific color accents */
.code-snippet[data-language="JavaScript"] .code-keyword { color: #f7df1e; }
.code-snippet[data-language="Python"] .code-keyword { color: #3776ab; }
.code-snippet[data-language="Java"] .code-keyword { color: #ed8b00; }
.code-snippet[data-language="C++"] .code-keyword { color: #00599c; }
.code-snippet[data-language="C#"] .code-keyword { color: #178600; }
.code-snippet[data-language="Go"] .code-keyword { color: #00add8; }
.code-snippet[data-language="Rust"] .code-keyword { color: #ce422b; }
.code-snippet[data-language="Swift"] .code-keyword { color: #ff6b4a; }
.code-snippet[data-language="Kotlin"] .code-keyword { color: #f18e33; }
.code-snippet[data-language="PHP"] .code-keyword { color: #777bb4; }
.code-snippet[data-language="Ruby"] .code-keyword { color: #cc342d; }
.code-snippet[data-language="Scala"] .code-keyword { color: #dc322f; }
.code-snippet[data-language="Haskell"] .code-keyword { color: #5d4f85; }
.code-snippet[data-language="F#"] .code-keyword { color: #378bba; }
.code-snippet[data-language="TypeScript"] .code-keyword { color: #3178c6; }
.code-snippet[data-language="Dart"] .code-keyword { color: #00b4ab; }
.code-snippet[data-language="Elixir"] .code-keyword { color: #6e4a7e; }
.code-snippet[data-language="Clojure"] .code-keyword { color: #5881d8; }
.code-snippet[data-language="Julia"] .code-keyword { color: #a270ba; }
.code-snippet[data-language="R"] .code-keyword { color: #198ce7; }
.code-snippet[data-language="Perl"] .code-keyword { color: #39457e; }

/* Add subtle glow effect on hover */
.code-snippet:hover .code-keyword {
    text-shadow: 0 0 12px currentColor;
}

.code-snippet:hover .code-function {
    text-shadow: 0 0 12px currentColor;
}

/* Responsive adjustments for code snippets */
@media (max-width: 768px) {
    .code-snippet {
        font-size: 0.75rem;
        padding: 0.75rem 1rem;
    }
    
    .splide__slide {
        padding: 0 0.5rem;
    }
}

@media (max-width: 480px) {
    .code-snippet {
        font-size: 0.7rem;
        padding: 0.5rem 0.75rem;
    }
    
    .splide__slide {
        padding: 0 0.25rem;
    }
}

@keyframes float {
    0%, 100% { transform: translateY(-50%) translateY(0px); }
    50% { transform: translateY(-50%) translateY(-5px); }
}



/* Languages Section */
.languages-section {
    margin-bottom: clamp(3rem, 5vw, 3.6rem);
    display: flex;
    flex-direction: column;
    gap: clamp(1.2rem, 2.6vw, 1.8rem);
}

/* Section header tweaks so the CTA lives on the right */
.section-header {
    position: relative;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: clamp(1.05rem, 2.4vw, 1.6rem);
    padding: clamp(1.05rem, 2.5vw, 1.6rem) clamp(1.2rem, 3vw, 1.75rem);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(189, 200, 255, 0.2);
    background: rgba(12, 18, 34, 0.78);
    box-shadow: 0 18px 32px rgba(4, 8, 20, 0.5), inset 0 1px 0 rgba(255,255,255,0.05);
    overflow: hidden;
}

.section-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.22), rgba(125, 127, 255, 0));
    opacity: 0.3;
    pointer-events: none;
}

.section-header-copy {
    max-width: min(520px, 100%);
    position: relative;
    z-index: 1;
}

.section-header + .lesson-toolbar {
    margin-top: 0.5rem;
}

.section-header h3 {
    font-size: clamp(1.4rem, 2.3vw, 1.65rem);
    font-weight: 600;
    margin-bottom: 0.45rem;
    color: rgba(246, 247, 255, 0.96);
}

.section-header p {
    color: rgba(220, 227, 255, 0.72);
}

.lesson-toolbar {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:clamp(0.55rem, 1.8vw, 0.9rem);
    background: rgba(11, 17, 30, 0.78);
    border:1px solid rgba(189, 200, 255, 0.18);
    border-radius: var(--radius-lg);
    padding:clamp(0.5rem, 1.6vw, 0.75rem) clamp(0.75rem, 2vw, 1.1rem);
    margin-bottom: .75rem;
    flex-wrap: wrap;
    box-shadow: 0 16px 28px rgba(4, 8, 18, 0.45), inset 0 1px 0 rgba(255,255,255,0.05);
}

.filter-group {
    display:flex;
    align-items:center;
    gap:.5rem;
    flex-wrap: wrap;
}

.filter-label {
    color: rgba(220, 227, 255, 0.75);
    font-size:.9rem;
    margin-right:.1rem;
}

.filter-check {
    display:inline-flex;
    align-items:center;
    gap:.45rem;
    background: linear-gradient(180deg, rgba(18, 24, 42, 0.85), rgba(12, 18, 34, 0.9));
    border:1px solid rgba(189, 200, 255, 0.2);
    border-radius: 999px;
    padding:.5rem .85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
}

.filter-check:hover {
    border-color: rgba(189, 200, 255, 0.35);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(6, 10, 24, 0.3), inset 0 1px 0 rgba(255,255,255,0.08);
}

.filter-check input[type="checkbox"] {
    accent-color: #7d7fff;
    width:18px;
    height:18px;
    cursor: pointer;
    border-radius: 4px;
}

.filter-check span {
    font-size:.92rem;
    color: rgba(235, 240, 255, 0.9);
    font-weight: 500;
    user-select: none;
}

.filter-select,
.filter-search {
    background: linear-gradient(180deg, rgba(18, 24, 42, 0.85), rgba(12, 18, 34, 0.9));
    color: rgba(235, 240, 255, 0.9);
    border:1px solid rgba(189, 200, 255, 0.2);
    border-radius: 12px;
    padding:.5rem .75rem;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
    min-height: 42px;
    font-family: inherit;
    transition: all 0.2s ease;
}

.filter-search {
    min-width: 240px;
}

.filter-search::placeholder {
    color: rgba(184, 194, 230, 0.55);
}

.filter-select:hover,
.filter-search:hover {
    border-color: rgba(189, 200, 255, 0.3);
}

.filter-select:focus,
.filter-search:focus {
    border-color: rgba(125, 127, 255, 0.45);
    box-shadow: 0 0 0 3px rgba(125, 127, 255, 0.15), inset 0 1px 0 rgba(255,255,255,0.08);
    outline: none;
    background: linear-gradient(180deg, rgba(20, 28, 48, 0.9), rgba(14, 20, 36, 0.95));
}

.languages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: clamp(1.1rem, 2.4vw, 1.6rem);
}

.language-card {
    position: relative;
    background: linear-gradient(180deg, rgba(17, 23, 40, 0.92), rgba(11, 16, 30, 0.95));
    border: 1px solid rgba(189, 200, 255, 0.16);
    border-radius: var(--radius-lg);
    padding: clamp(1.15rem, 2.6vw, 1.65rem);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    overflow: hidden;
    box-shadow: 0 22px 38px rgba(5, 9, 22, 0.45), inset 0 1px 0 rgba(255,255,255,0.05);
}

.language-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(120deg, rgba(125, 127, 255, 0.28), rgba(125, 127, 255, 0));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.language-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
    pointer-events: none;
}

.language-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lifted);
    border-color: rgba(189, 200, 255, 0.32);
}

.language-card:hover::before {
    opacity: 0.4;
}

.language-header {
    display: flex;
    align-items: center;
    gap: clamp(0.85rem, 2.2vw, 1rem);
    margin-bottom: clamp(0.85rem, 2.2vw, 1.15rem);
}

.language-logo {
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    border: 1px solid currentColor;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), rgba(255,255,255,0.02));
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.16), 0 12px 20px rgba(5, 9, 22, 0.45);
    color: inherit;
    position: relative;
    overflow: hidden;
}

.language-logo::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, rgba(255,255,255,0.16), rgba(255,255,255,0) 58%);
    pointer-events: none;
}

.language-logo i,
.language-logo .language-logo-icon {
    font-size: 1.8rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.language-logo .language-logo-img {
    width: 70%;
    height: 70%;
    object-fit: contain;
    display: block;
    z-index: 2;
    filter: drop-shadow(0 2px 4px rgba(5, 10, 20, 0.3));
}

.language-logo .language-logo-fallback {
    display: none;
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
    font-size: 0.92rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: rgba(239, 245, 255, 0.92);
    z-index: 1;
}

.language-logo.is-fallback .language-logo-fallback {
    display: inline-flex;
}

.language-logo.is-fallback .language-logo-icon,
.language-logo.is-fallback .language-logo-img,
.language-logo .language-logo-icon.is-missing {
    opacity: 0;
}

.language-logo--sm {
    width: 36px;
    height: 36px;
    border-radius: 10px;
}

.language-logo--sm .language-logo-img {
    width: 68%;
    height: 68%;
}

.language-logo--sm i,
.language-logo--sm .language-logo-icon {
    font-size: 1.25rem;
}

.hero-orb .language-logo {
    width: clamp(58px, 9vw, 78px);
    height: clamp(58px, 9vw, 78px);
    font-size: clamp(32px, 5.5vw, 44px);
    backdrop-filter: blur(8px);
    border: 1.5px solid;
}

.hero-orb .language-logo i,
.hero-orb .language-logo .language-logo-icon {
    font-size: clamp(32px, 5.5vw, 44px);
}

.hero-orb .language-logo .language-logo-img {
    width: 66%;
    height: 66%;
}

.language-info h4 {
    font-size: clamp(1.08rem, 2vw, 1.22rem);
    font-weight: 600;
    color: rgba(244, 246, 255, 0.98);
}

.language-info p {
    font-size: clamp(0.86rem, 1.7vw, 0.95rem);
    color: rgba(224, 230, 255, 0.72);
}

.language-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(0.55rem, 1.6vw, 0.9rem);
    margin-top: 1.05rem;
    padding-top: 0.95rem;
    border-top: 1px solid rgba(189, 200, 255, 0.16);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
    text-align: left;
}

.stat-item .label {
    font-size: 0.74rem;
    color: rgba(184, 194, 230, 0.72);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat-item .value {
    font-size: clamp(0.98rem, 1.9vw, 1.08rem);
    font-weight: 600;
    color: rgba(244, 246, 255, 0.95);
}

/* Stats Section */
.stats-section {
    margin-bottom: clamp(3rem, 5vw, 3.6rem);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: clamp(1rem, 2.2vw, 1.5rem);
}

.stat-card {
    position: relative;
    background: linear-gradient(180deg, rgba(17, 23, 40, 0.92), rgba(12, 18, 34, 0.96));
    border: 1px solid rgba(189, 200, 255, 0.16);
    border-radius: var(--radius-lg);
    padding: clamp(1.15rem, 2.3vw, 1.55rem) clamp(1.2rem, 2.5vw, 1.65rem);
    display: flex;
    align-items: center;
    gap: clamp(0.85rem, 2vw, 1.1rem);
    box-shadow: 0 20px 36px rgba(4, 8, 20, 0.45), inset 0 1px 0 rgba(255,255,255,0.05);
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
    pointer-events: none;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lifted);
    border-color: rgba(189, 200, 255, 0.28);
}

.stat-icon {
    font-size: 1.9rem;
    width: 58px;
    height: 58px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.14), rgba(255,255,255,0));
    border: 1px solid rgba(189, 200, 255, 0.18);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 12px 20px rgba(4, 8, 20, 0.45);
}

.stat-content h4 {
    font-size: 0.9rem;
    color: rgba(220, 227, 255, 0.72);
    margin-bottom: 0.25rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.stat-number {
    font-size: clamp(1.45rem, 2.7vw, 1.6rem);
    font-weight: 700;
    color: rgba(244, 246, 255, 0.95);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(4, 6, 12, 0.82);
    backdrop-filter: blur(18px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    background: linear-gradient(180deg, rgba(21, 28, 48, 0.96), rgba(10, 14, 26, 0.94));
    border: 1px solid rgba(189, 200, 255, 0.18);
    border-radius: var(--radius-xl);
    width: min(1000px, 95%);
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 45px 90px rgba(5, 8, 20, 0.65), inset 0 1px 0 rgba(255,255,255,0.06);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.3s ease;
    isolation: isolate;
}

.modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.28), rgba(125, 127, 255, 0));
    opacity: 0.35;
    mix-blend-mode: screen;
    pointer-events: none;
}

/* “Don’t know where to start” questionnaire: black glass, no purple wash */
#guidedStartModal.modal-overlay,
#guidedStartResultOverlay.modal-overlay {
    background: rgba(0, 0, 0, 0.88);
}

#guidedStartModal .guided-start-modal,
#guidedStartResultOverlay .guided-start-result {
    background: rgba(0, 0, 0, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.82), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
}

#guidedStartModal .guided-start-modal::before,
#guidedStartResultOverlay .guided-start-result::before {
    display: none;
    content: none;
}

#guidedStartModal .guided-start-modal .modal-header,
#guidedStartResultOverlay .guided-start-result .modal-header {
    background: rgba(0, 0, 0, 0.55);
    border-bottom-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

#guidedStartModal .guided-start-modal .modal-header h3,
#guidedStartResultOverlay .guided-start-result .modal-header h3 {
    color: rgba(255, 255, 255, 0.96);
}

#guidedStartModal .guided-start-modal .modal-close,
#guidedStartResultOverlay .guided-start-result .modal-close {
    background: rgba(0, 0, 0, 0.45);
    border-color: rgba(255, 255, 255, 0.16);
    color: rgba(255, 255, 255, 0.88);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    position: relative;
    padding: 1.35rem 1.6rem;
    border-bottom: 1px solid rgba(189, 200, 255, 0.16);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(9, 13, 24, 0.6);
    backdrop-filter: blur(10px);
    z-index: 1;
}

.modal-header h3 {
    font-size: 1.28rem;
    font-weight: 600;
    color: rgba(244, 246, 255, 0.96);
}

.modal-close {
    background: rgba(10, 14, 26, 0.6);
    border: 1px solid rgba(189, 200, 255, 0.2);
    color: rgba(224, 230, 255, 0.82);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.modal-close:hover {
    transform: translateY(-1px);
    border-color: rgba(189, 200, 255, 0.32);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 12px 20px rgba(4,8,20,0.4);
}

.modal-content {
    padding: 1.6rem;
    max-height: 70vh;
    overflow-y: auto;
    position: relative;
    z-index: 1;
}

.question-section {
    margin-bottom: 2rem;
}

.question-section h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.code-block {
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.answers-section {
    margin-bottom: 2rem;
}

.answers-grid {
    display: grid;
    gap: 1rem;
}

.answer-option {
    background: linear-gradient(180deg, rgba(16, 22, 38, 0.9), rgba(10, 14, 26, 0.92));
    border: 1px solid rgba(189, 200, 255, 0.16);
    border-radius: var(--radius-md);
    padding: 1.05rem 1.1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.05), 0 14px 28px rgba(4, 8, 20, 0.4);
}

.answer-option-text {
    flex: 1;
    min-width: 0;
    line-height: 1.45;
}

.answer-option:hover {
    transform: translateY(-2px);
    border-color: rgba(125, 127, 255, 0.45);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08), 0 18px 34px rgba(4, 8, 20, 0.48);
}

.answer-option.selected {
    border-color: rgba(125, 127, 255, 0.6);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.12), 0 18px 38px rgba(4, 8, 22, 0.5);
    background: linear-gradient(180deg, rgba(28, 35, 62, 0.95), rgba(16, 22, 42, 0.95));
}

.answer-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.9rem;
    padding: 1.1rem 1.6rem;
    border-top: 1px solid rgba(189, 200, 255, 0.14);
    background: rgba(10, 14, 26, 0.7);
}

/* Use modern font for modal action buttons */
#preTestModal .btn-primary,
#preTestModal .btn-secondary,
#testModal .btn-primary,
#testModal .btn-secondary {
    font-family: 'Space Grotesk', 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: 0.2px;
}

/* Pre-test flow styles */
.typing-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.typing-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.35rem;
    color: var(--text-secondary);
    font-size: 0.88rem;
    padding: 0.75rem 1rem;
    background: rgba(16, 22, 40, 0.5);
    border-radius: var(--radius-md);
    border: 1px solid rgba(189, 200, 255, 0.12);
}

.typing-stats .typing-stat {
    display: inline-flex;
    align-items: baseline;
    gap: 0.35rem;
    font-weight: 500;
    white-space: nowrap;
}

.typing-stat-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    opacity: 0.85;
}

.typing-prompt {
    font-family: 'Fira Code', 'Consolas', monospace;
    background: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.6;
    min-height: 260px;
    font-size: 0.95rem;
    overflow-wrap: break-word;
}

.typing-prompt span {
    padding: 0;
    display: inline;
    white-space: pre;
}

/* .code-snippet is inline-flex + gap elsewhere; here each char is a <span> → gap blew letters apart. */
#typingPrompt.typing-prompt.code-snippet {
    display: block !important;
    gap: 0 !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
    width: 100%;
    box-sizing: border-box;
    min-height: 12rem;
}

#preTestModal #typingPrompt.code-snippet::before,
#preTestModal #typingPrompt.code-snippet::after {
    content: none !important;
    display: none !important;
}

/* Typed/caret: do not paint correct chars green — keep per-token syntax colors at full strength. */
.typing-prompt.code-snippet span.tp-correct:not([class*="code-"]),
.typing-prompt.code-snippet span.tp-current:not([class*="code-"]) {
    color: inherit;
}

.tp-current { background: rgba(102,126,234,0.25); border-radius: 3px; }
.tp-error { background: rgba(239,68,68,0.25); border-radius: 3px; }
.tp-future { opacity: 0.38; }

/* Not yet typed: muted syntax hues */
.typing-prompt .tp-future.code-keyword,
.typing-prompt .tp-future.code-function,
.typing-prompt .tp-future.code-bracket,
.typing-prompt .tp-future.code-string,
.typing-prompt .tp-future.code-number,
.typing-prompt .tp-future.code-comment,
.typing-prompt .tp-future.code-operator,
.typing-prompt .tp-future.code-variable {
    filter: grayscale(22%);
    opacity: 0.38;
}

/* Typed or active caret: full token colors (inherits .code-* + [data-language] rules) */
.typing-prompt .tp-correct.code-keyword,
.typing-prompt .tp-correct.code-function,
.typing-prompt .tp-correct.code-bracket,
.typing-prompt .tp-correct.code-string,
.typing-prompt .tp-correct.code-number,
.typing-prompt .tp-correct.code-comment,
.typing-prompt .tp-correct.code-operator,
.typing-prompt .tp-correct.code-variable,
.typing-prompt .tp-current.code-keyword,
.typing-prompt .tp-current.code-function,
.typing-prompt .tp-current.code-bracket,
.typing-prompt .tp-current.code-string,
.typing-prompt .tp-current.code-number,
.typing-prompt .tp-current.code-comment,
.typing-prompt .tp-current.code-operator,
.typing-prompt .tp-current.code-variable {
    opacity: 1;
    filter: none;
}

@keyframes tp-caret-blink {
    0%,
    45% {
        opacity: 1;
    }
    50%,
    95% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* Blinking insertion caret on the active character (test warm-up, lessons, IDE) */
.typing-prompt span.tp-current,
pre.demo-code span.tp-current,
pre.ide-lesson-typing span.tp-current {
    position: relative;
    display: inline-block;
    vertical-align: baseline;
}

.typing-prompt span.tp-current::after,
pre.demo-code span.tp-current::after,
pre.ide-lesson-typing span.tp-current::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0.1em;
    height: 1.08em;
    width: 2px;
    border-radius: 1px;
    background: var(--text-primary, #fafafa);
    animation: tp-caret-blink 1.06s step-end infinite;
    pointer-events: none;
    z-index: 1;
}

pre.ide-lesson-typing span.tp-current::after {
    background: rgba(255, 255, 255, 0.9);
}

html.codii-app #preTestModal .typing-prompt span.tp-current::after {
    background: var(--accent-strong, #f4f4f5);
}

@media (prefers-reduced-motion: reduce) {
    .typing-prompt span.tp-current::after,
    pre.demo-code span.tp-current::after,
    pre.ide-lesson-typing span.tp-current::after {
        animation: none;
        opacity: 1;
    }
}

.typing-hint {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    padding: 0.5rem;
    background: rgba(189, 200, 255, 0.05);
    border-radius: var(--radius-md);
}

/* Fullscreen pre-test modal variant */
#preTestModal .modal {
    width: min(1100px, 96%);
    max-height: 88vh;
    display: flex;
    flex-direction: column;
}

#preTestModal .pretest-modal-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

#preTestModal .pretest-modal-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
    gap: 0.75rem 1rem;
    margin-top: 1.25rem;
    padding: 1rem 1.35rem 1.35rem;
    flex-shrink: 0;
}

/* Test modals: match app matte surfaces (was default blue/purple glass). */
html.codii-app #preTestModal .modal,
html.codii-app #testModal .modal {
    background: var(--bg-surface-1, #161618);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.08));
    color: var(--text-primary, #ececee);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.55);
}

html.codii-app #preTestModal .modal-content,
html.codii-app #testModal .modal-content {
    background: transparent;
}

.test-quiz-feedback {
    margin: 0 0 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.45;
}

.test-quiz-feedback--success {
    background: color-mix(in oklab, var(--success, #5fd2a2) 22%, transparent);
    border: 1px solid color-mix(in oklab, var(--success, #5fd2a2) 45%, transparent);
    color: var(--text-primary, #ececee);
}

.test-quiz-feedback--error {
    background: color-mix(in oklab, var(--danger, var(--error, #c47a88)) 20%, transparent);
    border: 1px solid color-mix(in oklab, var(--danger, var(--error, #c47a88)) 40%, transparent);
    color: var(--text-primary, #ececee);
}

.test-quiz-hint {
    margin: 0 0 1rem;
    padding: 0.55rem 0.75rem;
    font-size: 0.8rem;
    line-height: 1.45;
    color: var(--text-muted, #71717a);
    border-radius: var(--radius-md, 9px);
    border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.055));
    background: var(--bg-surface-2, #1f1f23);
}

.pretest-typing-status {
    margin: 0;
    min-height: 1.35rem;
    font-size: 0.82rem;
    line-height: 1.45;
    color: var(--text-secondary, #a1a1aa);
}

.pretest-typing-status.is-done {
    color: var(--success, #8a9a8e);
    font-weight: 600;
}

.answer-option-key {
    flex-shrink: 0;
    width: 1.65rem;
    height: 1.65rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm, 6px);
    font-size: 0.78rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    background: var(--bg-surface-3, #27272a);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
    color: var(--text-secondary, #a1a1aa);
}

html.codii-app #testModal .answer-option.selected .answer-option-key {
    background: color-mix(in oklab, var(--accent-soft) 80%, var(--bg-surface-3));
    border-color: var(--border-strong);
    color: var(--text-primary, #fafafa);
}

#preTestModal .pretest-modal-actions .btn-primary,
#preTestModal .pretest-modal-actions .btn-secondary {
    min-height: 42px;
    padding: 0.55rem 1.15rem;
}

#testModal .modal-actions {
    gap: 1rem;
    padding: 1.1rem 1.6rem 1.35rem;
}

#testModal .modal-actions .btn-primary,
#testModal .modal-actions .btn-secondary {
    min-height: 42px;
    padding: 0.55rem 1.15rem;
}

/* Pre-test intro: matte layout (replaces stat-card + bullets) */
.pretest-about {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
    background: var(--bg-surface-2, #1f1f23);
    margin-bottom: 1.15rem;
}

.pretest-about__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md, 9px);
    background: var(--bg-surface-3, #27272a);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.095));
    color: var(--text-secondary, #a1a1aa);
}

.pretest-about__body {
    min-width: 0;
}

.pretest-about__eyebrow {
    margin: 0 0 0.35rem;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted, #71717a);
}

.pretest-about__text {
    margin: 0;
    font-size: 0.94rem;
    line-height: 1.55;
    color: var(--text-primary, #fafafa);
    font-weight: 450;
}

.pretest-meta-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
}

@media (max-width: 520px) {
    .pretest-meta-grid {
        grid-template-columns: 1fr;
    }
}

.pretest-meta-cell {
    padding: 0.8rem 0.95rem;
    border-radius: var(--radius-md, 9px);
    border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.055));
    background: var(--bg-surface-1, #18181b);
}

.pretest-meta-label {
    display: block;
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--text-muted, #71717a);
    margin-bottom: 0.3rem;
}

.pretest-meta-value {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-primary, #fafafa);
}

html.codii-app #preTestModal .typing-stats {
    color: var(--text-secondary);
    background: var(--bg-surface-1);
    border: 1px solid var(--border-default);
}

html.codii-app #preTestModal .typing-prompt {
    background: var(--bg-code, #0c0c0e);
    border: 1px solid var(--border-default);
    color: var(--text-code, #d9d9d9);
}

html.codii-app #preTestModal .typing-hint {
    background: color-mix(in oklab, var(--accent-soft) 35%, var(--bg-surface-1));
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
}

html.codii-app #preTestModal .tp-current {
    background: color-mix(in oklab, var(--accent-soft) 55%, transparent);
    border-radius: 3px;
}

html.codii-app #testModal .code-block {
    background: var(--bg-code, #0c0c0e);
    border: 1px solid var(--border-default);
}

html.codii-app #testModal .answer-option {
    background: var(--bg-surface-2);
    border: 1px solid var(--border-default);
    box-shadow: none;
}

html.codii-app #testModal .answer-option:hover {
    background: var(--bg-surface-3);
    border-color: var(--border-strong);
    box-shadow: none;
    transform: translateY(-1px);
}

html.codii-app #testModal .answer-option.selected {
    background: color-mix(in oklab, var(--accent-soft) 50%, var(--bg-surface-2));
    border-color: var(--border-focus);
    box-shadow: none;
}

.test-page-main {
    padding-bottom: 2rem;
}

.test-page-hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.55;
    margin: 0 0 1rem;
    max-width: 52rem;
}

.test-page-hint code {
    font-size: 0.85em;
    padding: 0.1rem 0.35rem;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
}

/* In-app Overview (overview.html) — not the marketing index */
.overview-page-main {
    padding-bottom: 2rem;
}

.overview-quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 0.35rem;
}

a.overview-tile {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    padding: 1.1rem 1.25rem;
    text-decoration: none;
    color: inherit;
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.1));
    transition: border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
}

a.overview-tile:hover {
    transform: translateY(-2px);
    border-color: rgba(125, 127, 255, 0.45);
    box-shadow: 0 12px 28px rgba(4, 8, 20, 0.35);
}

.overview-tile-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary, #f4f4f5);
}

.overview-tile-desc {
    font-size: 0.82rem;
    line-height: 1.45;
    color: var(--text-secondary, #a1a1aa);
}

.overview-web-note {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted, #71717a);
}

.overview-web-note a {
    color: var(--accent, #a78bfa);
}

.start-guide-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.95rem 1.75rem;
    border-radius: 999px;
    border: 2px solid rgba(125, 127, 255, 0.5);
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.18), rgba(159, 92, 255, 0.12));
    color: rgba(245, 250, 255, 0.95);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.01em;
    transition: all 0.25s ease;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(125, 127, 255, 0.25), inset 0 1px 0 rgba(255,255,255,0.12);
}

.start-guide-btn svg {
    flex-shrink: 0;
}

.start-guide-btn:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, rgba(125, 127, 255, 0.28), rgba(159, 92, 255, 0.22));
    border-color: rgba(125, 127, 255, 0.7);
    box-shadow: 0 16px 35px rgba(125, 127, 255, 0.4), inset 0 1px 0 rgba(255,255,255,0.2);
}

.start-guide-btn:active {
    transform: translateY(-1px);
}

.start-guide-btn:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

/* Free tier: guided start used once — faint, non-interactive */
button.btn.start-guide-btn.start-guide-btn--free-spent:disabled,
button.btn.overview-start-guide-btn.start-guide-btn--free-spent:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    filter: grayscale(0.4);
    transform: none !important;
    box-shadow: none !important;
    border-color: var(--border-color, rgba(255, 255, 255, 0.12)) !important;
    background: var(--bg-surface-2, rgba(255, 255, 255, 0.04)) !important;
    color: var(--text-muted, #71717a) !important;
}

button.btn.start-guide-btn.start-guide-btn--free-spent:disabled:hover,
button.btn.overview-start-guide-btn.start-guide-btn--free-spent:disabled:hover,
button.btn.start-guide-btn.start-guide-btn--free-spent:disabled:active,
button.btn.overview-start-guide-btn.start-guide-btn--free-spent:disabled:active {
    transform: none !important;
    box-shadow: none !important;
}

.guided-start-modal {
    display: flex;
    flex-direction: column;
    max-width: min(960px, 95vw);
    width: 960px;
}

.guided-start-content {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 1.5rem;
    max-height: min(70vh, 720px);
    overflow: hidden;
}

.guided-start-progress {
    border-right: 1px solid var(--border-color);
    padding-right: 1rem;
    overflow-y: auto;
}

.guided-start-progress::-webkit-scrollbar,
.guided-start-body::-webkit-scrollbar {
    width: 6px;
}

.guided-start-progress::-webkit-scrollbar-thumb,
.guided-start-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
}

.guided-start-progress::-webkit-scrollbar-track,
.guided-start-body::-webkit-scrollbar-track {
    background: transparent;
}

.guided-start-steps {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.guided-start-steps li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.guided-start-steps li.active {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.guided-start-body {
    overflow-y: auto;
    padding-right: 0.5rem;
}

.guided-question {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.guided-question h4 {
    margin: 0;
}

.guided-question-options {
    display: grid;
    gap: 0.75rem;
}

.guided-question-options button {
    justify-content: flex-start;
}

.guided-question textarea,
.input-textarea {
    width: 100%;
    min-height: 160px;
    padding: 1rem 1.1rem;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(12, 14, 25, 0.65);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.guided-question textarea::placeholder,
.input-textarea::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.guided-question textarea:focus,
.input-textarea:focus {
    outline: none;
    border-color: rgba(144, 94, 255, 0.65);
    background: rgba(13, 16, 32, 0.85);
    box-shadow: 0 18px 36px rgba(112, 88, 255, 0.22);
}

.guided-question textarea:hover,
.input-textarea:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.guided-question textarea::-webkit-scrollbar {
    width: 8px;
}

.guided-question textarea::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.18);
    border-radius: 999px;
}

.guided-question-options button.active {
    border-color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: none;
}

.guided-question-options button:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.75);
    outline-offset: 2px;
}

.guided-start-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    gap: 1rem;
}

.guided-start-result {
    width: min(540px, 95vw);
}

.guided-result-content {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.guided-result-meta {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.guided-result-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--glass-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.guided-result-card .badge {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(255, 255, 255, 0.08);
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.guided-result-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.guided-ai-banner {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(255, 200, 0, 0.12);
    border: 1px solid rgba(255, 200, 0, 0.35);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
}

.guided-error {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    background: rgba(255, 82, 82, 0.15);
    border: 1px solid rgba(255, 82, 82, 0.4);
    color: #ffb3b3;
    font-size: 0.9rem;
}

.guided-loading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.guided-loading .spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: rgba(255, 255, 255, 0.65);
    animation: spin 0.9s linear infinite;
}

@media (max-width: 1100px) {
    .header-shell {
        padding: 0.9rem 1.3rem;
    }

    .header-content {
        gap: 1rem;
    }

    .logo-stack {
        gap: 0.8rem;
    }

    .main-content {
        padding: 2.6rem 1.8rem;
    }
}

@media (max-width: 960px) {
    .welcome-card {
        padding: clamp(1.9rem, 6vw, 2.3rem);
    }

    .welcome-main {
        grid-template-columns: 1fr;
        gap: clamp(1.8rem, 5vw, 2.3rem);
    }

    .welcome-copy {
        align-items: center;
        text-align: center;
    }

    .welcome-copy p {
        max-width: 100%;
    }

    .hero-badges {
        justify-content: center;
    }

    .welcome-actions {
        justify-content: center;
    }

    .hero-visual {
        width: min(72vw, 360px);
        margin: 0 auto;
    }

    .hero-float--goal {
        top: 9%;
        right: 8%;
    }

    .hero-float--coach {
        bottom: 9%;
        left: 8%;
    }

    .hero-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .languages-grid {
        grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    }
}

@media (max-width: 820px) {
    .guided-start-content {
        grid-template-columns: 1fr;
        max-height: none;
    }

    .guided-start-progress {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .start-guide-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 1rem 0.6rem 0.75rem;
    }

    .main-content {
        padding: 2.2rem 1.2rem;
        gap: 2.5rem;
    }

    .hero-pill,
    .hero-typewriter {
        width: 100%;
        justify-content: center;
    }

    .hero-typewriter {
        flex-wrap: wrap;
    }

    .hero-visual {
        width: min(80vw, 340px);
    }

    .hero-float--goal {
        top: 10%;
        right: 10%;
    }

    .hero-float--coach {
        bottom: 10%;
        left: 10%;
    }

    .hero-metrics {
        grid-template-columns: 1fr;
    }

    .languages-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .modal {
        width: 94%;
    }
}

@media (max-width: 600px) {
    .header-shell {
        width: calc(100% - 1.4rem);
        padding: 0.85rem 1.05rem;
    }

    .header-content {
        gap: 0.75rem;
    }

    .logo-stack {
        gap: 0.6rem;
    }

    .primary-nav {
        gap: 0.25rem;
        padding: 0.3rem;
    }

    .nav-link {
        padding: 0.45rem 0.7rem;
        font-size: 0.85rem;
    }

    .header-actions {
        gap: 0.5rem;
    }

    .btn-secondary {
        padding: 0.65rem 1rem;
        font-size: 0.85rem;
    }

    .hero-visual {
        width: min(88vw, 310px);
    }

    .hero-float {
        position: static;
        width: 100%;
        min-width: 0;
        max-width: none;
        margin-top: 0.7rem;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 0.75rem 0.9rem;
        gap: 0.6rem;
    }

    .hero-depth-bar {
        margin-left: 0.75rem;
        flex: 1;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .welcome-card {
        padding: 1.8rem 1.6rem;
    }

    .welcome-copy h2 {
        font-size: 1.85rem;
    }

    .welcome-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .hero-typewriter {
        align-items: center;
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-metrics {
        gap: 0.75rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 2s infinite;
}

/* Shared progress bars */
.progress-wrap {
    display: none;
    margin-top: 0.75rem;
}
.progress-wrap.active {
    display: block;
}
.progress-track {
    width: 100%;
    height: 10px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    overflow: hidden;
    position: relative;
}
.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    transition: width 0.25s ease;
}
.progress-bar.indeterminate {
    width: 100%;
    animation: progressSlide 1.2s linear infinite;
    background-size: 200% 100%;
}
.progress-bar.success {
    background: linear-gradient(135deg, #10b981, #34d399);
}
.progress-bar.error {
    background: linear-gradient(135deg, #ef4444, #f97316);
}
.progress-label {
    margin-top: 0.45rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
@keyframes progressSlide {
    0% { background-position: 200% 0; }
    50% { background-position: 100% 0; }
    100% { background-position: -200% 0; }
}

/* Admin styles */
.admin-wrap {
    max-width: 1120px;
    margin: 2rem auto;
    padding: 0 1.5rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.admin-toolbar {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
    background: var(--glass-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
}
.admin-toolbar select,
.admin-toolbar button {
    min-height: 42px;
}
.admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}
.admin-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.admin-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}
.admin-section-title {
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}
.admin-field {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    margin-bottom: 1rem;
}
.admin-input,
.admin-textarea,
.admin-select {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 0.9rem;
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.admin-input:focus,
.admin-textarea:focus,
.admin-select:focus {
    outline: none;
    border-color: rgba(102,126,234,0.45);
    box-shadow: 0 0 0 3px rgba(102,126,234,0.15);
}
.admin-textarea {
    min-height: 160px;
    font-family: 'Fira Code', monospace;
    white-space: pre;
}
.admin-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.admin-step {
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: rgba(17,18,24,0.85);
    display: grid;
    gap: 0.75rem;
}
.admin-buttons {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.admin-mini {
    font-size: 0.78rem;
    color: var(--text-secondary);
}
.btn-admin {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 0.65rem 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-admin:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.btn-admin.secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-danger {
    background: rgba(239,68,68,0.15);
    color: #fecaca;
    border: 1px solid rgba(239,68,68,0.35);
    border-radius: var(--radius-md);
    padding: 0.65rem 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}
.admin-log-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.admin-log-output {
    background: rgba(0,0,0,0.45);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    padding: 0.75rem 0.9rem;
    max-height: 220px;
    overflow-y: auto;
    font-family: 'Fira Code', monospace;
    font-size: 0.82rem;
    line-height: 1.45;
}
.admin-log-output:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102,126,234,0.2);
}
.admin-log-line {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 0.5rem;
    align-items: baseline;
    padding: 0.25rem 0;
}
.admin-log-line:not(:last-child) {
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.admin-log-line.error {
    color: #fecaca;
}
.admin-log-line.info {
    color: var(--text-secondary);
}
.admin-log-ts {
    color: var(--text-muted);
    font-size: 0.75rem;
}
.admin-log-message {
    white-space: pre-wrap;
    word-break: break-word;
}
.admin-log-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.admin-log-card .admin-section-title {
    margin-bottom: 0.35rem;
}
.admin-status-pill {
    font-size: 0.8rem;
    padding: 0.35rem 0.6rem;
    border-radius: 999px;
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.admin-status-pill.ok {
    color: #bbf7d0;
    border-color: rgba(16,185,129,0.45);
    background: rgba(16,185,129,0.12);
}
.admin-status-pill.error {
    color: #fecaca;
    border-color: rgba(239,68,68,0.35);
    background: rgba(239,68,68,0.12);
}
.admin-wrap-header {
    max-width: 1120px;
    margin: 0 auto 1.25rem;
    padding: 0 1.5rem;
}
.admin-wrap-header h2 {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}
.admin-wrap-header p {
    color: var(--text-secondary);
    max-width: 60ch;
}

@media (max-width: 820px) {
    .settings-container,
    .admin-wrap {
        padding: 0 1rem 2.5rem;
    }
    .settings-cta {
        flex-direction: column;
        align-items: stretch;
    }
    .settings-cta-button {
        width: 100%;
        text-align: center;
    }
    .admin-toolbar {
        flex-direction: column;
        align-items: stretch;
    }
}

/* -------------------------------------------------------------------------- */
/* Tauri vs browser: marketing shell (tenzy-web-only) vs app chrome          */
/* -------------------------------------------------------------------------- */
.tenzy-desktop-only {
    display: none !important;
}

html[data-tenzy-desktop='1'] .tenzy-web-only {
    display: none !important;
}

html[data-tenzy-desktop='1'] .tenzy-desktop-only {
    display: block !important;
}

html[data-tenzy-desktop='1'] .app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

html[data-tenzy-desktop='1'] .app-container > .main-content,
html[data-tenzy-desktop='1'] .app-container > .settings-container {
    flex: 1;
    min-height: 0;
}

html[data-tenzy-desktop='1'] .header-content .header-search {
    flex: 1;
    min-width: 0;
}

/* Auth signup: terms & privacy checkbox */
.auth-field--checkbox {
  margin-bottom: 0.85rem;
}

.auth-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-secondary, #a1a1aa);
  cursor: pointer;
  font-weight: 400;
}

.auth-checkbox-label input[type='checkbox'] {
  margin-top: 0.2rem;
  flex-shrink: 0;
  width: 1.05rem;
  height: 1.05rem;
  accent-color: var(--accent, #d4d4d8);
  cursor: pointer;
}

.auth-checkbox-label a {
  color: var(--text-primary, #fafafa);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.auth-checkbox-label a:hover {
  color: var(--accent-hover, #e4e4e7);
}

/* Auth (auth.html) when site-theme is not loaded — mirrors site-theme auth */
html[data-tenzy-desktop='1'] .tenzy-auth-main {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 0;
    padding: 1.5rem clamp(0.75rem, 3vw, 1.5rem) 2.5rem !important;
}

html[data-tenzy-desktop='1'] .tenzy-auth-page {
    width: 100%;
    max-width: 440px;
}

html[data-tenzy-desktop='1'] .auth-card {
    width: 100%;
    box-sizing: border-box;
    padding: 1.75rem clamp(1.1rem, 3vw, 1.75rem);
    border-radius: var(--radius-lg, 12px);
    background: var(--bg-surface-2, #18181b) !important;
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.1)) !important;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35) !important;
}

html[data-tenzy-desktop='1'] .auth-card h1 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
    color: var(--text-primary, #fafafa) !important;
}

html[data-tenzy-desktop='1'] .auth-card .sub {
    font-size: 0.88rem;
    color: var(--text-muted, #a1a1aa) !important;
    margin: 0 0 1.15rem;
    line-height: 1.45;
}

html[data-tenzy-desktop='1'] .auth-panel .sub {
    margin-top: 0;
}

html[data-tenzy-desktop='1'] .auth-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.15rem;
}

html[data-tenzy-desktop='1'] .auth-tabs button {
    flex: 1;
    padding: 0.55rem 0.65rem;
    border-radius: var(--radius-sm, 8px);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12)) !important;
    background: var(--bg-surface-1, #0d0d0d) !important;
    color: var(--text-secondary, #d4d4d8) !important;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.88rem;
    font-family: inherit;
}

html[data-tenzy-desktop='1'] .auth-tabs button.active {
    background: var(--bg-surface-3, #27272a) !important;
    border-color: rgba(45, 212, 191, 0.48) !important;
    color: var(--text-primary, #fff) !important;
    box-shadow: inset 0 0 0 1px rgba(45, 212, 191, 0.14) !important;
}

html[data-tenzy-desktop='1'] .auth-field {
    margin-bottom: 1rem;
}

html[data-tenzy-desktop='1'] .auth-field label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted, #a1a1aa) !important;
    margin-bottom: 0.4rem;
}

html[data-tenzy-desktop='1'] .auth-field input {
    width: 100%;
    box-sizing: border-box;
    padding: 0.72rem 0.85rem;
    border-radius: var(--radius-sm, 8px);
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.12)) !important;
    background: var(--bg-app, #09090b) !important;
    color: var(--text-primary, #f8fafc) !important;
    font-size: 0.95rem;
    font-family: inherit;
}

html[data-tenzy-desktop='1'] .auth-field input:focus {
    outline: none;
    border-color: rgba(45, 212, 191, 0.55) !important;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.22);
}

html[data-tenzy-desktop='1'] .auth-submit {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md, 10px);
    border: 1px solid rgba(255, 255, 255, 0.14) !important;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    font-family: inherit;
    color: #ecfdf5 !important;
    background: #0f766e !important;
    background-image: none !important;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.14) inset,
        0 8px 24px rgba(0, 0, 0, 0.38) !important;
}

html[data-tenzy-desktop='1'] .auth-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

html[data-tenzy-desktop='1'] .auth-submit--ghost {
    background: var(--bg-surface-2, #27272a) !important;
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.15)) !important;
    color: var(--text-primary, #f4f4f5) !important;
}

html[data-tenzy-desktop='1'] .auth-submit--link {
    margin-top: 0.75rem;
    padding: 0.55rem 0.75rem;
    font-size: 0.82rem;
    background: transparent !important;
    border: 1px solid var(--border-default, rgba(255, 255, 255, 0.14)) !important;
    color: var(--text-muted, #a1a1aa) !important;
    border-radius: var(--radius-sm, 8px);
}

html[data-tenzy-desktop='1'] .auth-link-wrap {
    text-align: center;
    margin: 0.85rem 0 0;
}

html[data-tenzy-desktop='1'] .auth-link-btn {
    background: none !important;
    border: none !important;
    padding: 0;
    font: inherit;
    color: var(--accent, #a78bfa) !important;
    font-size: 0.82rem;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}

html[data-tenzy-desktop='1'] .auth-msg {
    font-size: 0.85rem;
    margin-top: 0.75rem;
    padding: 0.65rem 0.8rem;
    border-radius: var(--radius-sm, 8px);
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

html[data-tenzy-desktop='1'] .auth-msg.show {
    display: block;
}

html[data-tenzy-desktop='1'] .auth-msg.err {
    background: rgba(127, 29, 29, 0.35) !important;
    color: #fecaca !important;
    border-color: rgba(248, 113, 113, 0.35) !important;
}

html[data-tenzy-desktop='1'] .auth-msg.ok {
    background: rgba(6, 78, 59, 0.35) !important;
    color: #a7f3d0 !important;
    border-color: rgba(52, 211, 153, 0.35) !important;
}

html[data-tenzy-desktop='1'] .auth-code-banner.auth-msg.ok {
    font-family: ui-monospace, monospace;
    letter-spacing: 0.15em;
    font-size: 1.05rem;
    text-align: center;
}

html[data-tenzy-desktop='1'] .auth-panel {
    display: none;
}

html[data-tenzy-desktop='1'] .auth-panel.active {
    display: block;
}

/* Overview Activity: strip tiles as buttons + detail modal */
button.overview-activity-tile.stat-card--strip {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    font: inherit;
    font-family: inherit;
    color: inherit;
    text-align: inherit;
    width: 100%;
    box-sizing: border-box;
}

button.overview-activity-tile.stat-card--strip:focus-visible {
    outline: 2px solid var(--accent, #a78bfa);
    outline-offset: 2px;
}

.overview-activity-detail-modal {
    max-width: min(520px, 94vw);
}

.overview-activity-modal-body {
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--text-secondary, #a1a1aa);
}

.overview-activity-modal-body .overview-activity-lede,
.overview-activity-modal-body .overview-activity-metric {
    color: var(--text-primary, #f4f4f5);
    margin: 0 0 0.75rem;
}

.overview-activity-modal-body .overview-activity-sub {
    margin: 0 0 1rem;
}

.overview-activity-modal-body .overview-activity-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted, #71717a);
    margin: 1rem 0 0.5rem;
}

.overview-activity-modal-body .overview-activity-list {
    margin: 0 0 0.75rem;
    padding-left: 1.15rem;
}

.overview-activity-modal-body .overview-activity-list a {
    color: var(--accent, #a78bfa);
}

.overview-activity-modal-body .overview-activity-empty {
    margin: 0 0 0.75rem;
}

.overview-activity-modal-body .overview-activity-foot {
    margin: 1rem 0 0;
}