/* =========================================================
   CAMPPU — Learning Experience Platform
   Netflix/Spotify-style streaming educational platform
   Dark theme default · Warm sophistication · Premium feel
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Design tokens ────────────────────────────────────────── */
:root {
  /* Backgrounds — dark default */
  --bg:         #0e1117;
  --bg-elev:    #151b25;
  --bg-sunken:  #090d12;
  --bg-card:    #161d2b;
  --bg-hover:   #1e2736;

  /* Foregrounds */
  --fg:   #f0f2f8;
  --fg-2: #c4c9d8;
  --fg-3: #8a91a8;
  --fg-4: #5e6478;
  --fg-5: #3a3f52;

  /* Borders */
  --border:        rgba(255,255,255,0.07);
  --border-strong: rgba(255,255,255,0.14);
  --divider:       rgba(255,255,255,0.05);

  /* Brand accent palette — CAMPPU */
  --accent-code:     #01295f;   /* Navy  — Skill para el trabajo */
  --accent-business: #ffb30f;   /* Amber — Emprendimiento */
  --accent-language: #437f97;   /* Steel blue — Lectura / Ipler */
  --accent-science:  #849324;   /* Olive green — Apoyo Escolar */
  --accent-ai:       #fd151b;   /* Red — IA para la vida */
  --accent-design:   #fd151b;   /* alias for error/danger states */
  --accent-creative: #437f97;   /* alias */
  --accent-primary:  #01295f;

  /* Semantic alias */
  --accent:      var(--accent-primary);
  --accent-soft: rgba(1,41,95,0.18);

  /* Radii */
  --radius:    16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --r-sm:  10px;
  --r-md:  16px;
  --r-lg:  22px;
  --r-xl:  28px;
  --r-2xl: 36px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.6), 0 2px 8px rgba(0,0,0,.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,.5), 0 12px 32px rgba(0,0,0,.45);
  --shadow-lg: 0 12px 36px rgba(0,0,0,.6), 0 32px 64px rgba(0,0,0,.5);

  /* Typography */
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-text:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'SF Mono', Menlo, Consolas, monospace;

  /* Select arrow (neutral gray, works on both themes) */
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%235e6478' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

/* ── Light theme overrides ────────────────────────────────── */
[data-theme="light"] {
  --bg:         #faf9f7;
  --bg-elev:    #ffffff;
  --bg-sunken:  #f2ede8;
  --bg-card:    #ffffff;
  --bg-hover:   #ece8e2;

  --fg:   #12141a;
  --fg-2: #2e3244;
  --fg-3: #6b6f82;
  --fg-4: #9296a8;
  --fg-5: #b8bcc8;

  --border:        rgba(0,0,0,0.08);
  --border-strong: rgba(0,0,0,0.15);
  --divider:       rgba(0,0,0,0.05);

  --accent-soft: rgba(1,41,95,0.1);

  --shadow-sm: 0 1px 2px rgba(0,0,0,.04), 0 2px 8px rgba(0,0,0,.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,.06), 0 12px 28px rgba(0,0,0,.07);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.09), 0 30px 60px rgba(0,0,0,.09);
}

/* ── Base reset ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  letter-spacing: -0.011em;
}

h1, h2, h3, h4, h5, .display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
p { margin: 0; }

/* ── App shell ────────────────────────────────────────────── */
#app-root {
  min-height: 100vh;
  background: var(--bg);
  transition: background .3s ease;
}

/* ── Topbar / Navigation ──────────────────────────────────── */
.app-topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(14,17,23,0.88);
  backdrop-filter: saturate(1.6) blur(24px);
  -webkit-backdrop-filter: saturate(1.6) blur(24px);
  border-bottom: 1px solid var(--divider);
}

[data-theme="light"] .app-topbar {
  background: rgba(250,249,247,0.88);
}

.app-topbar-inner {
  max-width: 1440px; margin: 0 auto; padding: 0 40px;
  height: 56px; display: flex; align-items: center; gap: 32px;
}

.app-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.04em;
  display: flex; align-items: center; gap: 10px;
  color: var(--fg); text-decoration: none;
  cursor: pointer; user-select: none;
}

.app-logo-mark {
  height: 32px;
  width: auto;
  flex: none;
  display: block;
}

.app-brand-wordmark {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.04em;
  color: var(--fg);
}

/* Legacy (mantener por si acaso) */
.app-brand-mark {
  width: 28px; height: 28px; border-radius: 8px; flex: none;
  background: #1a6ef5;
}

.app-nav { display: flex; gap: 4px; flex: 1; }

.app-nav a {
  background: transparent; border: 0;
  font-size: 13px; font-weight: 500; color: var(--fg-3);
  padding: 8px 14px; border-radius: 999px;
  cursor: pointer; transition: all .2s ease;
  letter-spacing: -0.01em; display: inline-block;
}
.app-nav a:hover, .app-nav a.active {
  color: var(--fg); background: var(--bg-hover);
}

.app-topbar-right { display: flex; align-items: center; gap: 10px; }

.icon-btn {
  width: 36px; height: 36px; border-radius: 999px; border: 0;
  background: transparent; color: var(--fg-3);
  display: grid; place-items: center; cursor: pointer;
  transition: background .2s ease, color .2s ease;
  text-decoration: none;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--fg); }

.avatar {
  width: 32px; height: 32px; border-radius: 999px;
  background: linear-gradient(135deg, #01295f, #437f97);
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 12px; cursor: pointer;
  font-family: var(--font-display); text-decoration: none; border: 0;
}

.avatar-lg {
  width: 128px; height: 128px; border-radius: 999px;
  background: linear-gradient(135deg, #01295f, #437f97);
  display: grid; place-items: center; color: #fff;
  font-weight: 700; font-size: 44px; font-family: var(--font-display);
}

/* ── Layout primitives ────────────────────────────────────── */
.container         { max-width: 1440px; margin: 0 auto; padding: 0 40px; }
.container-narrow  { max-width: 1120px; margin: 0 auto; padding: 0 40px; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 14px; font-weight: 600; letter-spacing: -0.01em;
  padding: 11px 22px; border-radius: 999px; border: 0;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease,
              box-shadow .15s ease, transform .1s ease;
  text-decoration: none; white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: #01295f;
  color: #fff;
  box-shadow: 0 2px 12px rgba(1,41,95,0.45);
}
.btn-primary:hover {
  background: #01337a;
  box-shadow: 0 4px 20px rgba(1,41,95,0.55);
}

.btn-secondary {
  background: transparent;
  color: var(--fg);
  border: 1.5px solid var(--border-strong);
}
.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.btn-ghost {
  background: transparent;
  color: var(--fg-2);
  border: 0;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--fg); }

.btn-lg  { padding: 15px 30px; font-size: 15px; }
.btn-xl  { padding: 19px 38px; font-size: 17px; }

.btn-danger {
  background: rgba(253,21,27,0.12);
  color: #fd151b;
  border: 1px solid rgba(253,21,27,0.25);
}
.btn-danger:hover {
  background: rgba(253,21,27,0.2);
}

/* ── Pills ────────────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 500;
  background: var(--bg-hover); color: var(--fg-2);
  letter-spacing: -0.005em;
}

.pill-dot {
  width: 7px; height: 7px;
  border-radius: 999px;
  background: currentColor;
  flex: none;
}

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.07);
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
  transition: transform .25s ease, box-shadow .25s ease, border-color .2s ease;
}

[data-theme="light"] .card {
  border-color: rgba(0,0,0,0.07);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06), 0 8px 32px rgba(0,0,0,0.05);
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(0,0,0,0.45);
  border-color: rgba(255,255,255,0.13);
}

[data-theme="light"] .card-hover:hover {
  box-shadow: 0 6px 28px rgba(0,0,0,0.1), 0 16px 48px rgba(0,0,0,0.08);
  border-color: rgba(0,0,0,0.12);
}

.card-link { cursor: pointer; display: block; }

/* ── Category backgrounds ─────────────────────────────────── */
.bg-code     { background: linear-gradient(135deg, #01295f 0%, #0a3d7a 100%); }
.bg-business { background: linear-gradient(135deg, #c88a00 0%, #ffb30f 100%); }
.bg-language { background: linear-gradient(135deg, #2d6a82 0%, #437f97 100%); }
.bg-science  { background: linear-gradient(135deg, #5a6624 0%, #849324 100%); }
.bg-neutral  { background: linear-gradient(135deg, #5a6624 0%, #849324 100%); }
.bg-ai       { background: linear-gradient(135deg, #c01010 0%, #fd151b 100%); }
.bg-design   { background: linear-gradient(135deg, #c01010 0%, #fd151b 100%); }
.bg-creative { background: linear-gradient(135deg, #2d6a82 0%, #437f97 100%); }

/* ── Hero art cards ───────────────────────────────────────── */
.hero-art {
  width: 100%; aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  display: grid; place-items: center;
  position: relative; overflow: hidden;
  font-family: var(--font-mono); font-size: 11px;
  color: rgba(255,255,255,.85);
  letter-spacing: 0.1em; text-transform: uppercase;
}

.hero-art::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0,0,0,0) 40%,
    rgba(0,0,0,0.7) 100%
  );
  pointer-events: none; z-index: 1;
}

.hero-art::after {
  content: "";
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    45deg,
    rgba(255,255,255,.035) 0 10px,
    rgba(255,255,255,0) 10px 26px
  );
  pointer-events: none;
}

.hero-art-content {
  position: relative; z-index: 2;
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
}

.hero-art-content svg {
  filter: drop-shadow(0 2px 12px rgba(0,0,0,0.22));
  flex-shrink: 0;
}

.hero-art .label {
  position: relative; z-index: 2;
  background: rgba(0,0,0,.38);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 6px 14px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.2);
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.1em;
  color: #fff;
}

/* ── Progress ring ────────────────────────────────────────── */
.ring {
  --size: 44px; --stroke: 4px; --progress: 0;
  width: var(--size); height: var(--size);
  position: relative; display: inline-block;
}
.ring svg   { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: var(--stroke); }
.ring .track { stroke: var(--divider); }
.ring .bar   { stroke: var(--accent-language); stroke-linecap: round; transition: stroke-dashoffset .6s ease; }
.ring .pct   {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-size: 11px; font-weight: 700;
  color: var(--fg); letter-spacing: -0.02em;
}

/* ── Progress bar ─────────────────────────────────────────── */
.progress-bar {
  height: 5px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
}

[data-theme="light"] .progress-bar {
  background: rgba(0,0,0,0.08);
}

.progress-bar-fill {
  height: 100%; border-radius: 999px;
  background: linear-gradient(90deg, #437f97, #01295f);
  transition: width .5s cubic-bezier(0.16,1,0.3,1);
}

.progress-bar-lg { height: 7px; }

/* ── Page transitions ─────────────────────────────────────── */
.page { animation: pageIn .35s cubic-bezier(0.16,1,0.3,1); }
main.page { animation: pageFadeIn .28s ease both; }

@keyframes pageIn    { from { opacity:0; transform: translateY(8px) } to { opacity:1; transform: translateY(0) } }
@keyframes pageFadeIn { from { opacity:0; transform: translateY(6px) } to { opacity:1; transform: none } }

/* ── Scrollbar ────────────────────────────────────────────── */
* { scrollbar-width: thin; scrollbar-color: var(--fg-5) transparent; }
*::-webkit-scrollbar { width: 6px; height: 6px; }
*::-webkit-scrollbar-thumb { background: var(--fg-5); border-radius: 999px; }
*::-webkit-scrollbar-track { background: transparent; }

/* ── Utilities ────────────────────────────────────────────── */
.row { display: flex; align-items: center; }
.col { display: flex; flex-direction: column; }

.gap-4  { gap: 4px  } .gap-6  { gap: 6px  } .gap-8  { gap: 8px  }
.gap-12 { gap: 12px } .gap-16 { gap: 16px } .gap-20 { gap: 20px }
.gap-24 { gap: 24px } .gap-32 { gap: 32px } .gap-48 { gap: 48px }

.mt-4  { margin-top: 4px  } .mt-8  { margin-top: 8px  } .mt-12 { margin-top: 12px }
.mt-16 { margin-top: 16px } .mt-20 { margin-top: 20px } .mt-24 { margin-top: 24px }
.mt-32 { margin-top: 32px } .mt-48 { margin-top: 48px }
.mt-64 { margin-top: 64px } .mt-96 { margin-top: 96px }
.mb-0  { margin-bottom: 0 }

.text-fg3  { color: var(--fg-3) }
.text-fg4  { color: var(--fg-4) }
.text-fg5  { color: var(--fg-5) }
.fw-5      { font-weight: 500 }
.fw-6      { font-weight: 600 }
.fw-7      { font-weight: 700 }
.text-sm   { font-size: 13px }
.text-xs   { font-size: 12px }
.text-base { font-size: 15px }
.uppercase { text-transform: uppercase }
.mono      { font-family: var(--font-mono); }
.truncate  { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.flex-1    { flex: 1; min-width: 0; }
.flex-none { flex: none; }

:focus-visible {
  outline: 2px solid var(--accent-language);
  outline-offset: 2px;
  border-radius: 6px;
}
button, a { -webkit-tap-highlight-color: transparent; }

/* ── Section eyebrow ─────────────────────────────────────── */
.section-eyebrow {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent-language);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 10px;
}

/* ── Section header ───────────────────────────────────────── */
.section-header {
  display: flex; align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 28px; gap: 24px; flex-wrap: wrap;
}
.section-header-left {}

.section-title {
  font-size: 40px; font-weight: 800; letter-spacing: -0.04em;
  line-height: 1.02;
}

.section-subtitle {
  color: var(--fg-3); font-size: 17px;
  margin-top: 8px; max-width: 620px; line-height: 1.5;
}

/* ── Home hero ────────────────────────────────────────────── */
.home-hero {
  padding: 80px 0 56px;
  position: relative;
}

.home-hero-eyebrow {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.16em;
  color: var(--accent-language);
  margin-bottom: 20px;
}

.home-hero-title {
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800; letter-spacing: -0.04em;
  line-height: 1.01; max-width: 860px;
}

.home-hero-sub {
  font-size: 18px; color: var(--fg-3);
  margin-top: 20px; max-width: 540px; line-height: 1.55;
}

.home-hero-actions {
  display: flex; align-items: center; gap: 12px;
  margin-top: 36px; flex-wrap: wrap;
}

/* ── Form elements ────────────────────────────────────────── */
.input {
  display: block; width: 100%;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px;
  color: var(--fg); font-family: inherit; font-size: 15px; line-height: 1.4;
  transition: border-color .2s ease, box-shadow .2s ease;
  outline: none;
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
}

.input:focus {
  border-color: var(--accent-language);
  box-shadow: 0 0 0 3px rgba(67,127,151,0.2);
}

.input::placeholder { color: var(--fg-4); }

select.input {
  padding-right: 44px;
  background-color: var(--bg-sunken);
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer; line-height: 1.4;
}
select.input::-ms-expand { display: none; }

.input-search {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 14px 22px;
  transition: border-color .2s ease;
}
.input-search:focus-within {
  border-color: var(--accent-language);
  box-shadow: 0 0 0 3px rgba(67,127,151,0.15);
}
.input-search input {
  flex: 1; border: 0; background: transparent;
  outline: none; color: var(--fg); font-size: 16px; font-family: inherit;
}
.input-search input::placeholder { color: var(--fg-4); }

.select {
  display: inline-block;
  background: var(--bg-sunken);
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right 16px center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0 44px 0 20px;
  color: var(--fg); font-family: inherit; font-size: 14px;
  cursor: pointer; outline: none;
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  transition: border-color .2s ease, box-shadow .2s ease;
  height: 48px; line-height: 48px;
  vertical-align: middle; white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.select:focus {
  border-color: var(--accent-language);
  box-shadow: 0 0 0 3px rgba(67,127,151,0.2);
}
.select::-ms-expand { display: none; }

.label-field {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--fg-3); margin-bottom: 8px;
}
.form-group  { margin-bottom: 20px; }
.form-error  { font-size: 13px; color: #fd151b; margin-top: 6px; }

.alert {
  padding: 14px 18px; border-radius: var(--radius);
  font-size: 14px; margin-bottom: 20px;
}
.alert-error {
  background: rgba(253,21,27,0.1);
  color: #fd151b;
  border: 1px solid rgba(253,21,27,0.2);
}
.alert-success {
  background: rgba(132,147,36,0.12);
  color: #a8bc2e;
  border: 1px solid rgba(132,147,36,0.25);
}

/* ── Course card ──────────────────────────────────────────── */
.course-card {
  cursor: pointer; display: block; text-decoration: none;
  transition: transform .25s cubic-bezier(0.16,1,0.3,1),
              box-shadow .25s ease;
}
.course-card:hover { transform: translateY(-3px) scale(1.01); }
.course-card:hover .card {
  box-shadow: 0 12px 48px rgba(0,0,0,0.5);
  border-color: rgba(255,255,255,0.14);
}

.course-card-body { padding: 18px 20px 22px; }

.course-card-cat {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  margin-bottom: 10px;
  display: flex; align-items: center; gap: 6px;
}

.course-card-title {
  font-size: 19px; line-height: 1.2;
  letter-spacing: -0.025em; font-weight: 700;
}

.course-card-subtitle {
  font-size: 13px; color: var(--fg-3);
  margin-top: 8px; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}

.course-card-meta {
  display: flex; align-items: center; gap: 12px;
  margin-top: 16px; font-size: 12px; color: var(--fg-4);
}
.course-card-meta span { display: flex; align-items: center; gap: 4px; }

/* ── Course row (compact) ─────────────────────────────────── */
.course-row {
  display: flex; align-items: center; gap: 16px;
  padding: 14px; border-radius: var(--radius);
  cursor: pointer; transition: background .2s ease;
  text-decoration: none;
}
.course-row:hover { background: var(--bg-hover); }
.course-row-thumb {
  width: 96px; height: 72px; aspect-ratio: auto;
  flex: none; border-radius: var(--radius-sm);
}
.course-row-info  { flex: 1; min-width: 0; }
.course-row-cat   {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 4px;
}
.course-row-title {
  font-size: 15px; font-weight: 600;
  letter-spacing: -0.015em; line-height: 1.25;
}
.course-row-meta  { font-size: 12px; color: var(--fg-4); margin-top: 8px; display: flex; gap: 8px; }

/* ── Continue card ────────────────────────────────────────── */
.continue-card        { border-radius: var(--r-xl); overflow: hidden; }
.continue-card-grid   { display: grid; grid-template-columns: 1.1fr 1fr; }
.continue-card-art    { border-radius: 0; aspect-ratio: auto; min-height: 380px; }
.continue-card-body   { padding: 44px 48px; display: flex; flex-direction: column; justify-content: center; }

/* ── Stats grid ───────────────────────────────────────────── */
.stats-grid  { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.stat-card   { padding: 22px; border-radius: var(--radius); }
.stat-value  {
  font-family: var(--font-display); font-size: 40px;
  font-weight: 800; letter-spacing: -0.04em; margin-top: 10px;
}
.stat-unit   { font-size: 13px; color: var(--fg-4); margin-top: -2px; }

/* ── Player layout ────────────────────────────────────────── */
.player-layout  {
  display: grid; grid-template-columns: 1fr 380px;
  min-height: calc(100vh - 56px);
}
.player-main    { padding: 28px 32px 60px; }
.player-sidebar {
  background: var(--bg-elev);
  border-left: 1px solid var(--divider);
  padding: 28px 24px; overflow-y: auto;
  position: sticky; top: 56px;
  max-height: calc(100vh - 56px);
}

.video-placeholder {
  border-radius: var(--radius-lg); aspect-ratio: 16/9;
  position: relative; overflow: hidden;
  display: grid; place-items: center; color: #fff;
}
.video-placeholder-stripe {
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    45deg, rgba(255,255,255,.06) 0 12px, transparent 12px 32px
  );
}
.video-progress {
  position: absolute; left: 24px; right: 24px; bottom: 24px;
  display: flex; align-items: center; gap: 16px;
}
.video-progress-bar {
  flex: 1; height: 4px; background: rgba(255,255,255,.25);
  border-radius: 999px; overflow: hidden;
}
.video-progress-fill { height: 100%; background: #fff; border-radius: 999px; }

/* ── Tabs ─────────────────────────────────────────────────── */
.tabs {
  display: flex; gap: 4px;
  border-bottom: 1px solid var(--divider);
}
.tab-btn {
  padding: 12px 4px; margin-right: 24px;
  background: transparent; border: 0;
  color: var(--fg-4); font-weight: 500; font-size: 14px;
  cursor: pointer; border-bottom: 2px solid transparent;
  margin-bottom: -1px; font-family: inherit;
  transition: color .2s ease, border-color .2s ease;
}
.tab-btn.active {
  color: var(--fg);
  border-bottom-color: var(--accent-language);
}
.tab-content        { display: none; padding: 28px 0; min-height: 240px; }
.tab-content.active { display: block; }

/* ── AI Overlay ───────────────────────────────────────────── */
.ai-overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(9,13,18,0.6);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  display: flex; justify-content: flex-end;
  animation: fadeIn .25s ease;
}

.ai-panel {
  width: min(520px,100%); height: 100%;
  background: var(--bg-elev);
  border-left: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column;
  animation: slideIn .35s cubic-bezier(0.16,1,0.3,1);
}

.ai-header {
  padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
  border-bottom: 1px solid var(--divider);
}

.ai-mark {
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, #01295f 0%, #fd151b 100%);
  box-shadow: 0 2px 10px rgba(1,41,95,0.4);
}

.ai-messages { flex: 1; overflow-y: auto; padding: 24px; }

.ai-bubble {
  padding: 12px 18px; border-radius: 18px;
  max-width: 85%; font-size: 15px; line-height: 1.5;
}
.ai-bubble-ai {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--fg);
}
.ai-bubble-user {
  background: #01295f; color: #fff;
  box-shadow: 0 2px 12px rgba(1,41,95,0.4);
}

.ai-input-area { padding: 16px 20px; border-top: 1px solid var(--divider); }
.ai-input-row {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-sunken);
  border-radius: 999px; padding: 8px 8px 8px 20px;
  border: 1px solid var(--border);
}
.ai-input-row input {
  flex: 1; border: 0; background: transparent; outline: none;
  font-family: inherit; font-size: 15px; color: var(--fg);
}
.ai-input-row input::placeholder { color: var(--fg-4); }

.ai-suggestion {
  padding: 10px 16px; border-radius: var(--radius-sm);
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--fg); cursor: pointer; text-align: left;
  font-size: 14px; font-family: inherit; width: 100%;
  transition: background .2s ease, border-color .2s ease;
}
.ai-suggestion:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

/* AI suggestion chips */
.ai-suggestions { display: flex; flex-wrap: wrap; gap: 6px; padding: 8px 16px 4px; }
.ai-chip {
  background: var(--bg-hover); border: 1px solid var(--border);
  border-radius: 20px; padding: 5px 14px;
  font-size: 12px; cursor: pointer; color: var(--fg-2);
  transition: all .15s ease; white-space: nowrap;
}
.ai-chip:hover {
  background: rgba(67,127,151,0.15);
  color: var(--accent-language);
  border-color: var(--accent-language);
}

/* ── Quiz ─────────────────────────────────────────────────── */
.quiz-option {
  display: flex; align-items: center; gap: 20px;
  padding: 22px 28px; border-radius: var(--radius);
  cursor: pointer; background: var(--bg-card);
  border: 1.5px solid var(--border);
  color: var(--fg); text-align: left;
  font-family: inherit; width: 100%;
  transition: all .2s ease; margin-bottom: 12px;
}
.quiz-option:hover:not(.answered) {
  background: var(--bg-hover); border-color: var(--border-strong);
}
.quiz-option.selected  { background: var(--bg-hover); border-color: var(--fg-3); }
.quiz-option.correct   {
  background: rgba(132,147,36,0.12);
  border-color: var(--accent-science);
}
.quiz-option.wrong     {
  background: rgba(253,21,27,0.1);
  border-color: var(--accent-ai);
}

.quiz-option-letter {
  width: 36px; height: 36px; border-radius: 999px; flex: none;
  display: grid; place-items: center;
  background: var(--bg-hover); color: var(--fg-3);
  font-family: var(--font-mono); font-size: 13px; font-weight: 700;
}
.quiz-option.correct .quiz-option-letter { background: var(--accent-science); color: #fff; }
.quiz-option.wrong   .quiz-option-letter { background: var(--accent-ai); color: #fff; }
.quiz-option-text { font-size: 17px; line-height: 1.4; }

/* ── Studio table ─────────────────────────────────────────── */
.studio-table { width: 100%; border-collapse: collapse; }
.studio-table th {
  padding: 16px 24px;
  background: var(--bg-sunken);
  font-size: 11px; font-weight: 700; color: var(--fg-4);
  text-transform: uppercase; letter-spacing: 0.1em; text-align: left;
}
.studio-table td {
  padding: 18px 24px;
  border-top: 1px solid var(--divider);
  vertical-align: middle;
}

/* ── Timeline (path) ──────────────────────────────────────── */
.timeline          { position: relative; padding-left: 40px; }
.timeline-line     { position: absolute; left: 19px; top: 8px; bottom: 8px; width: 2px; background: var(--divider); }
.timeline-item     { position: relative; padding-bottom: 20px; }
.timeline-dot {
  position: absolute; left: -40px; top: 18px;
  width: 40px; height: 40px; border-radius: 999px;
  background: var(--bg-card); border: 2px solid var(--border);
  display: grid; place-items: center;
  color: var(--fg-3); font-family: var(--font-mono);
  font-size: 12px; font-weight: 700;
}
.timeline-dot.done    { background: var(--accent-language); border-color: var(--accent-language); color: #fff; }
.timeline-dot.current { background: transparent; border: 3px solid var(--accent-language); }

.timeline-card {
  padding: 24px 28px; border-radius: var(--radius);
  margin-left: 16px; background: var(--bg-card); border: 1px solid var(--border);
}
.timeline-card.current { background: var(--bg-hover); border-color: var(--accent-language); }
.timeline-card.locked  { opacity: .5; }

/* ── Flash / Toast notifications ─────────────────────────── */
.flash {
  position: fixed; bottom: 24px; right: 24px; z-index: 200;
  padding: 14px 22px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: slideUp .3s cubic-bezier(0.16,1,0.3,1);
  max-width: 380px;
  backdrop-filter: blur(10px);
}
.flash-success     { background: var(--accent-science); color: #fff; }
.flash-error       { background: var(--accent-ai); color: #fff; }
.flash-achievement {
  background: linear-gradient(135deg, #01295f, #437f97);
  color: #fff;
  box-shadow: 0 4px 24px rgba(1,41,95,0.5);
}

/* ── Achievements / Badges ────────────────────────────────── */
.achievement-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 18px; border-radius: 999px;
  font-size: 13px; font-weight: 700;
  border: 1px solid rgba(255,255,255,0.15);
}
.achievement-badge-icon {
  width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center;
  font-size: 14px;
}

/* ── Animations ───────────────────────────────────────────── */
@keyframes slideUp   { from { opacity:0; transform: translateY(14px) } to { opacity:1; transform: translateY(0) } }
@keyframes fadeIn    { from { opacity:0 } to { opacity:1 } }
@keyframes slideIn   { from { transform: translateX(32px); opacity:0 } to { transform: translateX(0); opacity:1 } }
@keyframes shimmer   { 0%,100% { opacity:.4 } 50% { opacity:.8 } }
@keyframes pulse     { 0%,100% { transform: scale(1) } 50% { transform: scale(1.04) } }

/* ── Auth pages ───────────────────────────────────────────── */
.auth-layout {
  min-height: 100vh; display: grid; place-items: center;
  background: var(--bg-sunken); padding: 40px 20px;
}
.auth-card {
  width: 100%; max-width: 440px;
  padding: 44px 48px; border-radius: var(--r-2xl);
  background: var(--bg-card); border: 1px solid var(--border);
  box-shadow: var(--shadow-md);
}
.auth-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 36px; }

/* ── Error pages ──────────────────────────────────────────── */
.error-page { min-height: 100vh; display: grid; place-items: center; text-align: center; }

/* ── Markdown in AI chat ─────────────────────────────────── */
.ai-bubble p            { margin: 0 0 8px; line-height: 1.6; }
.ai-bubble p:last-child { margin-bottom: 0; }
.ai-bubble strong       { font-weight: 700; color: var(--fg); }
.ai-bubble em           { font-style: italic; }

.md-h2, .md-h3, .md-h4 { font-weight: 700; margin: 12px 0 6px; color: var(--fg); }
.md-h2 { font-size: 16px; }
.md-h3 { font-size: 15px; }
.md-h4 { font-size: 14px; }

.md-code {
  background: var(--bg-sunken); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px; margin: 8px 0;
  overflow-x: auto; font-family: var(--font-mono);
  font-size: 12px; line-height: 1.7; white-space: pre;
}
.md-inline {
  background: var(--bg-sunken); border: 1px solid var(--border);
  padding: 1px 6px; border-radius: 5px;
  font-family: var(--font-mono); font-size: 12px;
}

.md-ul, .md-ol { padding-left: 20px; margin: 8px 0; }
.md-ul li, .md-ol li { margin-bottom: 4px; line-height: 1.55; }

.md-blockquote {
  border-left: 3px solid var(--accent-language);
  padding: 8px 14px; margin: 8px 0;
  color: var(--fg-3);
  background: rgba(67,127,151,0.08);
  border-radius: 0 8px 8px 0;
}

.md-table-wrap  { overflow-x: auto; margin: 8px 0; }
.md-table       { width: 100%; border-collapse: collapse; font-size: 12px; }
.md-table th    {
  background: var(--bg-hover); padding: 7px 12px;
  text-align: left; font-weight: 700;
  border-bottom: 1px solid var(--border);
}
.md-table td    { padding: 6px 12px; border-bottom: 1px solid var(--divider); }
.md-table tr:last-child td { border-bottom: none; }

/* ═══════════════════════════════════════════════════════════
   ADMIN PANEL
   ═══════════════════════════════════════════════════════════ */

/* ── Admin shell ────────────────────────────────────────── */
.admin-shell { display: flex; min-height: 100vh; }

.admin-sidebar {
  width: 240px; flex: none;
  position: fixed; top: 0; left: 0; height: 100vh;
  background: #01295f;                    /* Navy brand color */
  border-right: 1px solid rgba(255,255,255,0.08);
  display: flex; flex-direction: column;
  z-index: 50; overflow-y: auto;
}

[data-theme="light"] .admin-sidebar {
  background: #01295f;                    /* Keep navy in light mode too */
}

.admin-main {
  margin-left: 240px; flex: 1;
  min-height: 100vh; display: flex;
  flex-direction: column; background: var(--bg);
}

/* Sidebar header / brand */
.admin-logo {
  padding: 20px 16px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: #fff;
}
.admin-logo-mark {
  width: 32px; height: 32px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(67,127,151,0.6));
  border: 1px solid rgba(255,255,255,0.2);
}
.admin-logo-text {
  font-weight: 800; font-size: 15px;
  letter-spacing: -0.03em; line-height: 1.1; color: #fff;
}
.admin-logo-sub {
  font-size: 10px; color: rgba(255,255,255,0.5);
  font-weight: 400; text-transform: uppercase; letter-spacing: 0.1em;
}

/* Sidebar nav */
.admin-nav        { flex: 1; padding: 10px 0; }
.admin-nav-label  {
  padding: 16px 20px 4px;
  font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.12em;
  color: rgba(255,255,255,0.3);
}
.admin-nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; margin: 1px 8px; border-radius: 10px;
  color: rgba(255,255,255,0.65); font-size: 13.5px; font-weight: 500;
  text-decoration: none; transition: background .15s, color .15s;
}
.admin-nav-item svg     { opacity: .7; flex: none; }
.admin-nav-item:hover   { background: rgba(255,255,255,0.1); color: #fff; }
.admin-nav-item:hover svg { opacity: 1; }
.admin-nav-item.active  { background: rgba(255,255,255,0.15); color: #fff; position: relative; }
.admin-nav-item.active svg { opacity: 1; }
.admin-nav-item.active::before {
  content: ''; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 3px; border-radius: 0 3px 3px 0;
  background: var(--accent-language);
}
.admin-nav-badge {
  margin-left: auto; background: var(--accent-ai); color: #fff;
  font-size: 10px; font-weight: 700; padding: 1px 7px; border-radius: 999px;
}
.admin-nav-divider { height: 1px; background: rgba(255,255,255,0.08); margin: 8px 16px; }

/* Sidebar footer */
.admin-sidebar-footer {
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex; gap: 6px; flex-wrap: wrap;
}
.admin-sidebar-footer a {
  font-size: 12px; color: rgba(255,255,255,0.4);
  text-decoration: none; padding: 5px 8px;
  border-radius: 8px; transition: background .15s, color .15s;
}
.admin-sidebar-footer a:hover {
  background: rgba(255,255,255,0.1); color: #fff;
}

/* Admin topbar */
.admin-topbar {
  padding: 0 32px;
  border-bottom: 1px solid var(--divider);
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg); position: sticky; top: 0; z-index: 10;
  height: 56px; flex: none;
}
.admin-topbar-title  { font-weight: 700; font-size: 15px; letter-spacing: -0.02em; }
.admin-topbar-right  { display: flex; align-items: center; gap: 8px; }

/* Admin content area */
.admin-content     { padding: 32px; flex: 1; }
.admin-content-sm  { max-width: 840px; }
.admin-content-md  { max-width: 1080px; }

/* Page header inside admin */
.admin-page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 20px; margin-bottom: 32px; flex-wrap: wrap;
}
.admin-page-title    { font-size: 28px; font-weight: 800; letter-spacing: -0.04em; }
.admin-page-subtitle { font-size: 14px; color: var(--fg-3); margin-top: 4px; }

/* KPI cards */
.admin-kpi-grid {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 16px; margin-bottom: 24px;
}
@media(max-width:1100px) { .admin-kpi-grid { grid-template-columns: repeat(2,1fr); } }

.admin-kpi {
  padding: 22px 24px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  transition: transform .2s ease, box-shadow .2s ease;
}
.admin-kpi:hover { transform: translateY(-1px); }
.admin-kpi-label {
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .1em;
  color: var(--fg-4); margin-bottom: 12px;
  display: flex; align-items: center; gap: 8px;
}
.admin-kpi-value {
  font-size: 34px; font-weight: 800;
  letter-spacing: -0.05em; font-family: var(--font-display); line-height: 1;
}
.admin-kpi-sub { font-size: 12px; color: var(--fg-4); margin-top: 6px; }

/* Data table */
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
  padding: 12px 20px; background: var(--bg-sunken);
  font-size: 11px; font-weight: 700; color: var(--fg-4);
  text-transform: uppercase; letter-spacing: .1em; text-align: left;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
.admin-table td    { padding: 14px 20px; border-top: 1px solid var(--divider); vertical-align: middle; font-size: 14px; }
.admin-table tbody tr { transition: background .12s ease; }
.admin-table tr:hover td { background: var(--bg-hover); }
.admin-table-wrap  { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: var(--bg-card); }

/* Status badges */
.badge       { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.badge-green { background: rgba(132,147,36,0.15); color: #a8bc2e; }
.badge-yellow{ background: rgba(255,179,15,0.15); color: #ffb30f; }
.badge-red   { background: rgba(253,21,27,0.12);  color: #fd151b; }
.badge-gray  { background: var(--bg-sunken); color: var(--fg-4); }
.badge-blue  { background: rgba(67,127,151,0.15); color: var(--accent-language); }

/* Action buttons */
.admin-action-btn {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 5px 11px; border-radius: 8px;
  font-size: 12px; font-weight: 500;
  border: 1px solid var(--border);
  background: var(--bg); color: var(--fg-3);
  cursor: pointer; text-decoration: none;
  transition: background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.admin-action-btn:hover        { background: var(--bg-hover); color: var(--fg); border-color: var(--border-strong); }
.admin-action-btn.danger:hover { background: rgba(253,21,27,0.1); color: #fd151b; border-color: rgba(253,21,27,0.3); }
.admin-action-btn.primary      { background: #01295f; color: #fff; border-color: #01295f; }
.admin-action-btn.primary:hover { background: #01337a; opacity: 1; }

/* Admin settings tabs */
.admin-tabs  { display: flex; gap: 2px; border-bottom: 2px solid var(--border); margin-bottom: 32px; }
.admin-tab   {
  padding: 10px 18px; font-size: 14px; font-weight: 500;
  color: var(--fg-4); cursor: pointer; border: 0; background: transparent;
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  font-family: inherit; transition: color .2s, border-color .2s;
}
.admin-tab:hover      { color: var(--fg); }
.admin-tab.active     { color: var(--fg); border-bottom-color: var(--accent-language); }
.admin-tab-panel      { display: none; }
.admin-tab-panel.active { display: block; }

/* Settings grid */
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.settings-section { margin-bottom: 36px; }
.settings-section-title {
  font-size: 16px; font-weight: 700; letter-spacing: -0.02em;
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--divider);
}

/* Color swatch input */
.color-field { display: flex; align-items: center; gap: 10px; }
.color-field input[type=color] {
  width: 40px; height: 40px; border-radius: 10px;
  border: 1px solid var(--border); padding: 2px;
  cursor: pointer; background: var(--bg-card);
}

/* Category dot */
.cat-dot { width: 12px; height: 12px; border-radius: 999px; flex: none; display: inline-block; }

/* ── Admin sidebar item alias (used in some views) ───────── */
.admin-sidebar-item.active { position: relative; }
.admin-sidebar-item.active::before {
  content: ''; position: absolute; left: 0; top: 4px; bottom: 4px;
  width: 3px; border-radius: 0 3px 3px 0; background: var(--accent-language);
}

/* ── Responsive ───────────────────────────────────────────── */
@media(max-width:1100px) {
  .stats-grid           { grid-template-columns: repeat(2,1fr); }
  .player-layout        { grid-template-columns: 1fr; }
  .player-sidebar       { position: static; max-height: none; }
  .continue-card-grid   { grid-template-columns: 1fr; }
  .continue-card-art    { min-height: 260px; }
}

@media(max-width:1024px) {
  .section-title { font-size: 32px; }
  .home-hero-title { font-size: 44px; }
  .admin-kpi-grid { grid-template-columns: repeat(2,1fr); }
}

@media(max-width:768px) {
  .container, .container-narrow { padding: 0 20px; }
  .app-topbar-inner { padding: 0 20px; gap: 12px; }
  .app-nav          { display: none; }
  .section-title      { font-size: 26px; }
  .home-hero-title    { font-size: 34px; }
  .stats-grid         { grid-template-columns: repeat(2,1fr); }
  .admin-sidebar      { width: 200px; }
  .admin-main         { margin-left: 200px; }
  .admin-content      { padding: 20px; }
  .continue-card-body { padding: 28px 24px; }
  .settings-grid      { grid-template-columns: 1fr; }
}

@media(max-width:600px) {
  .stats-grid           { grid-template-columns: 1fr; }
  .auth-card            { padding: 32px 24px; }
  .admin-sidebar        { display: none; }
  .admin-main           { margin-left: 0; }
  .home-hero            { padding: 48px 0 32px; }
  .home-hero-title      { font-size: 28px; }
  .admin-kpi-grid       { grid-template-columns: 1fr; }
}

/* ── Footer ───────────────────────────────────────────────── */
.app-footer {
  background: var(--bg-sunken);
  border-top: 1px solid var(--divider);
  padding: 72px 0 40px;
  margin-top: 80px;
}
.footer-inner {
  max-width: 1440px; margin: 0 auto; padding: 0 40px;
}
.footer-top {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px;
  padding-bottom: 56px; border-bottom: 1px solid var(--divider);
}
.footer-brand-name {
  font-family: var(--font-display); font-weight: 800;
  font-size: 22px; letter-spacing: -0.04em;
  color: var(--fg); margin-bottom: 12px;
  display: flex; align-items: center; gap: 10px;
}
.footer-tagline {
  font-size: 15px; color: var(--fg-3); line-height: 1.6;
  max-width: 300px; margin-bottom: 28px;
}
.footer-social { display: flex; gap: 10px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--bg-hover); color: var(--fg-3);
  display: grid; place-items: center;
  text-decoration: none; transition: all .2s ease;
  font-size: 14px;
}
.footer-social a:hover { background: var(--accent-code); color: #fff; }
.footer-col-title {
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--fg-4);
  margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
  font-size: 14px; color: var(--fg-3); text-decoration: none;
  transition: color .2s ease;
}
.footer-links a:hover { color: var(--fg); }
.footer-bottom {
  padding-top: 32px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}
.footer-copyright {
  font-size: 13px; color: var(--fg-4);
}
.footer-legal { display: flex; gap: 20px; }
.footer-legal a {
  font-size: 13px; color: var(--fg-4); text-decoration: none;
  transition: color .2s ease;
}
.footer-legal a:hover { color: var(--fg-3); }

/* ── Support widget (floating bottom-right) ───────────────── */
.support-fab {
  position: fixed; bottom: 28px; right: 28px; z-index: 90;
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, #01295f, #437f97);
  color: #fff; border: 0; cursor: pointer;
  box-shadow: 0 4px 24px rgba(1,41,95,0.4);
  display: grid; place-items: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.support-fab:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 32px rgba(1,41,95,0.55);
}
.support-panel {
  position: fixed; bottom: 96px; right: 28px; z-index: 90;
  width: 360px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.35);
  overflow: hidden;
  transform: translateY(20px) scale(0.96);
  opacity: 0; pointer-events: none;
  transition: all .25s cubic-bezier(0.34,1.56,0.64,1);
}
.support-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1; pointer-events: auto;
}
.support-panel-header {
  background: linear-gradient(135deg, #01295f 0%, #437f97 100%);
  padding: 20px 24px; display: flex; align-items: center; gap: 14px;
}
.support-panel-avatar {
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(255,255,255,0.2);
  display: grid; place-items: center; font-size: 20px;
}
.support-panel-title { color: #fff; font-weight: 700; font-size: 15px; line-height: 1.2; }
.support-panel-sub { color: rgba(255,255,255,0.72); font-size: 12px; margin-top: 2px; }
.support-panel-body { padding: 24px; }
.support-tab-row {
  display: flex; gap: 8px; margin-bottom: 20px;
}
.support-tab {
  flex: 1; padding: 9px 0; border-radius: 10px; border: 1px solid var(--border);
  background: transparent; color: var(--fg-3); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all .2s ease;
}
.support-tab.active {
  background: var(--accent-code); border-color: var(--accent-code);
  color: #fff;
}
.support-form { display: flex; flex-direction: column; gap: 12px; }
.support-form .input { font-size: 14px; padding: 11px 14px; }
.support-form textarea.input { resize: none; height: 90px; }
.support-chat-msgs {
  height: 180px; overflow-y: auto; display: flex; flex-direction: column; gap: 10px;
  margin-bottom: 12px;
}
.support-chat-msg {
  max-width: 85%; padding: 10px 14px; border-radius: 14px; font-size: 13px; line-height: 1.45;
}
.support-chat-msg.bot {
  background: var(--bg-hover); color: var(--fg); border-bottom-left-radius: 4px;
}
.support-chat-msg.user {
  background: var(--accent-code); color: #fff;
  align-self: flex-end; border-bottom-right-radius: 4px;
}
.support-chat-input-row { display: flex; gap: 8px; }
.support-chat-input-row .input { flex: 1; padding: 10px 14px; font-size: 13px; }
.support-chat-send {
  width: 38px; height: 38px; border-radius: 10px;
  background: var(--accent-code); color: #fff; border: 0;
  cursor: pointer; display: grid; place-items: center;
  transition: opacity .2s;
}
.support-chat-send:hover { opacity: .85; }

/* ── Dark theme input fix (ensure proper contrast) ────────── */
[data-theme="dark"] .input,
[data-theme="dark"] .select,
[data-theme="dark"] select.input {
  background-color: var(--bg-sunken);
  color: var(--fg);
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE GRID UTILITIES
   ════════════════════════════════════════════════════════════ */
.grid-4  { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; }
.grid-5  { display:grid; grid-template-columns:repeat(5,1fr); gap:14px; }
.grid-6  { display:grid; grid-template-columns:repeat(6,1fr); gap:12px; }
.grid-2  { display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.grid-hero   { display:grid; grid-template-columns:1fr 340px; gap:48px; align-items:start; }
.grid-path   { display:grid; grid-template-columns:1.3fr 1fr; gap:24px; }
.grid-phase  { display:grid; grid-template-columns:1fr 2fr 1fr; gap:20px; }
.grid-instructor { display:grid; grid-template-columns:auto 1fr auto; gap:28px; align-items:center; }

@media(max-width:1100px) {
  .grid-4  { grid-template-columns: repeat(2,1fr); }
  .grid-5  { grid-template-columns: repeat(3,1fr); }
  .grid-6  { grid-template-columns: repeat(3,1fr); }
  .grid-hero { grid-template-columns: 1fr; }
  .grid-path { grid-template-columns: 1fr; }
}
@media(max-width:768px) {
  .grid-4  { grid-template-columns: repeat(2,1fr); }
  .grid-5  { grid-template-columns: repeat(2,1fr); }
  .grid-6  { grid-template-columns: repeat(2,1fr); }
  .grid-2  { grid-template-columns: 1fr; }
  .grid-hero { grid-template-columns: 1fr; }
  .grid-instructor { grid-template-columns: auto 1fr; }
  .grid-instructor .follow-btn-wrap { grid-column: 1 / -1; }
  .grid-phase { grid-template-columns: 1fr; gap:8px; }
  .grid-phase > div:first-child { display:none; } /* hide Elemento on mobile */
}
@media(max-width:480px) {
  .grid-4  { grid-template-columns: 1fr; }
  .grid-5  { grid-template-columns: repeat(2,1fr); }
  .grid-6  { grid-template-columns: repeat(2,1fr); }
}

/* ════════════════════════════════════════════════════════════
   MOBILE HAMBURGER NAV
   ════════════════════════════════════════════════════════════ */
.hamburger {
  display: none;
  flex-direction: column; gap: 5px;
  padding: 8px; border-radius: 10px;
  background: transparent; border: 0; cursor: pointer;
}
.hamburger span {
  display: block; width: 20px; height: 2px;
  background: var(--fg); border-radius: 2px;
  transition: all .2s ease;
}
.mobile-menu {
  display: none; position: fixed; inset: 56px 0 0;
  background: var(--bg); z-index: 999;
  padding: 24px 20px; flex-direction: column; gap: 4px;
  border-top: 1px solid var(--divider);
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  display: block; padding: 14px 16px;
  font-size: 17px; font-weight: 500;
  color: var(--fg); text-decoration: none;
  border-radius: 14px; transition: background .15s;
}
.mobile-menu a:hover, .mobile-menu a.active { background: var(--bg-hover); }
.mobile-menu .mobile-divider {
  height: 1px; background: var(--divider); margin: 12px 0;
}
@media(max-width:768px) {
  .hamburger { display: flex; }
  .app-topbar-right .icon-btn:not(#theme-toggle) { display:none; }
}

/* ════════════════════════════════════════════════════════════
   FOOTER RESPONSIVE
   ════════════════════════════════════════════════════════════ */
@media(max-width:900px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media(max-width:600px) {
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-inner { padding: 0 20px; }
  .app-footer { padding: 48px 0 32px; }
}

/* ════════════════════════════════════════════════════════════
   STAR RATING COMPONENT
   ════════════════════════════════════════════════════════════ */
.star-rating { display:flex; gap:6px; flex-direction:row-reverse; justify-content:flex-end; }
.star-rating input { display:none; }
.star-rating label {
  font-size:28px; cursor:pointer; color:var(--fg-4);
  transition:color .15s; line-height:1;
}
.star-rating input:checked ~ label,
.star-rating label:hover,
.star-rating label:hover ~ label { color: var(--accent-business); }

/* ════════════════════════════════════════════════════════════
   REVIEW CARDS
   ════════════════════════════════════════════════════════════ */
.reviews-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
@media(max-width:900px) { .reviews-grid { grid-template-columns:repeat(2,1fr); } }
@media(max-width:600px) { .reviews-grid { grid-template-columns:1fr; } }

/* ════════════════════════════════════════════════════════════
   ONBOARDING STEPPER
   ════════════════════════════════════════════════════════════ */
.onboarding-wrap {
  min-height: 100vh; display:flex; align-items:center; justify-content:center;
  background: var(--bg); padding: 40px 20px;
}
.onboarding-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 32px; padding: 56px 64px;
  max-width: 680px; width: 100%;
}
@media(max-width:600px) { .onboarding-card { padding: 36px 24px; } }
.onboarding-step { display:none; }
.onboarding-step.active { display:block; }
.onboarding-progress {
  display:flex; gap:6px; margin-bottom:48px;
}
.onboarding-progress span {
  flex:1; height:3px; border-radius:99px;
  background: var(--border); transition: background .3s;
}
.onboarding-progress span.done { background: var(--accent-code); }
.goal-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:12px; margin-top:20px; }
.goal-card {
  border: 2px solid var(--border); border-radius:18px;
  padding: 20px 18px; cursor:pointer; transition: all .2s;
  text-align:left; background:transparent;
  display:flex; flex-direction:column; gap:8px;
}
.goal-card:hover { border-color: var(--accent-code); background: color-mix(in oklab,var(--accent-code) 6%,var(--bg)); }
.goal-card.selected { border-color: var(--accent-code); background: color-mix(in oklab,var(--accent-code) 10%,var(--bg)); }
.goal-card-icon { font-size:28px; }
.goal-card-label { font-size:15px; font-weight:600; color:var(--fg); }
.goal-card-sub { font-size:12px; color:var(--fg-3); line-height:1.4; }

/* ════════════════════════════════════════════════════════════
   AI TUTOR PANEL (in player)
   ════════════════════════════════════════════════════════════ */
.ai-tutor-panel {
  display:flex; flex-direction:column; height:420px;
  border:1px solid var(--border); border-radius:20px;
  overflow:hidden; background:var(--bg-card);
}
.ai-tutor-messages {
  flex:1; overflow-y:auto; padding:20px;
  display:flex; flex-direction:column; gap:14px;
}
.ai-msg { display:flex; gap:10px; align-items:flex-start; }
.ai-msg.user { flex-direction:row-reverse; }
.ai-msg-bubble {
  max-width:80%; padding:12px 16px; border-radius:16px;
  font-size:14px; line-height:1.55;
}
.ai-msg.ai .ai-msg-bubble   { background:var(--bg-hover); border-radius:4px 16px 16px 16px; }
.ai-msg.user .ai-msg-bubble { background:var(--accent-code); color:#fff; border-radius:16px 4px 16px 16px; }
.ai-msg-avatar {
  width:28px; height:28px; border-radius:999px;
  background:linear-gradient(135deg,var(--accent-code),var(--accent-language));
  display:grid; place-items:center; font-size:12px; font-weight:700;
  color:#fff; flex:none;
}
.ai-tutor-input {
  display:flex; gap:8px; padding:12px 16px;
  border-top:1px solid var(--border); background:var(--bg);
}
.ai-tutor-input textarea {
  flex:1; border:0; background:transparent; outline:none;
  font-family:inherit; font-size:14px; color:var(--fg);
  resize:none; line-height:1.5; padding:4px 0;
}
.ai-tutor-send {
  width:34px; height:34px; border-radius:10px;
  background:var(--accent-code); color:#fff; border:0;
  cursor:pointer; display:grid; place-items:center;
  align-self:flex-end; transition:opacity .2s;
}
.ai-tutor-send:hover { opacity:.85; }

/* ════════════════════════════════════════════════════════════
   LIVE SESSIONS PAGE
   ════════════════════════════════════════════════════════════ */
.live-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media(max-width:900px) { .live-grid { grid-template-columns:repeat(2,1fr); } }
@media(max-width:600px) { .live-grid { grid-template-columns:1fr; } }
.live-badge {
  display:inline-flex; align-items:center; gap:5px;
  padding:4px 10px; border-radius:99px; font-size:10px;
  font-weight:700; letter-spacing:0.08em; text-transform:uppercase;
}
.live-badge.live-now { background:#ff3b30; color:#fff; }
.live-badge.live-soon { background:color-mix(in oklab,var(--accent-business) 15%,var(--bg)); color:var(--accent-business); }
.live-dot { width:6px; height:6px; border-radius:999px; background:currentColor;
            animation: live-pulse 1.4s ease infinite; }
@keyframes live-pulse { 0%,100%{opacity:1} 50%{opacity:.3} }