/* ============================================
   FACULDADE DA BELEZA — AREA DE MEMBROS
   Design System — Netflix-Style Dark Premium
   Brand Font: Plus Jakarta Sans (ref. WebinarKit)
   ============================================ */

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

:root {
  /* Surfaces — Netflix-like deep blacks */
  --bg: #0a0a0c;
  --bg-2: #141418;
  --surface: #18181d;
  --surface-2: #22222a;
  --surface-hover: #2a2a35;
  --overlay: rgba(10,10,12,0.85);
  --gradient-hero: linear-gradient(180deg, rgba(10,10,12,0) 0%, rgba(10,10,12,0.4) 40%, rgba(10,10,12,0.95) 90%, #0a0a0c 100%);
  --gradient-card: linear-gradient(180deg, transparent 40%, rgba(0,0,0,0.85) 100%);

  /* Borders */
  --border: rgba(255,255,255,0.08);
  --border-2: rgba(255,255,255,0.15);

  /* Text */
  --text: #f5f5f7;
  --text-2: #a8a8b3;
  --muted: #6b6b78;

  /* Accents — premium gold + brand colors */
  --brand: #D4AF37;
  --brand-2: #F5D67B;
  --brand-dim: rgba(212,175,55,0.15);
  --green: #2DD4A0;
  --green-dim: rgba(45,212,160,0.15);
  --red: #E50914;
  --red-dim: rgba(229,9,20,0.15);
  --blue: #4A9EFF;

  /* Layout */
  --radius: 8px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-card: 0 8px 24px rgba(0,0,0,0.4);
  --shadow-hero: 0 20px 60px rgba(0,0,0,0.6);

  /* Font */
  --font-brand: 'Plus Jakarta Sans', -apple-system, system-ui, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-brand);
  font-size: 15px;
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-brand);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}
h1 { font-size: 42px; }
h2 { font-size: 28px; }
h3 { font-size: 20px; }
h4 { font-size: 17px; }

a { color: var(--text); text-decoration: none; transition: color .2s; }
a:hover { color: var(--brand-2); }

button, input, select, textarea { font-family: inherit; font-size: inherit; }

img { max-width: 100%; display: block; }

/* ============================================
   TOP NAVBAR — Premium
   ============================================ */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: linear-gradient(180deg, rgba(10,10,12,0.92) 0%, rgba(10,10,12,0.5) 60%, rgba(10,10,12,0) 100%);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  transition: all .35s cubic-bezier(.4,0,.2,1);
  border-bottom: 1px solid transparent;
}
.topbar.scrolled {
  background: rgba(10,10,12,0.94);
  backdrop-filter: blur(28px) saturate(1.8);
  border-bottom-color: rgba(212,175,55,0.12);
  padding: 12px 56px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}
.topbar .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #F5D67B 0%, #D4AF37 50%, #F5D67B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  transition: all .3s;
}
.topbar .logo:hover {
  background-position: right center;
}
.topbar .logo::before {
  content: '';
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, #D4AF37 0%, #F5D67B 100%);
  border-radius: 6px;
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(212,175,55,0.4);
  -webkit-mask: radial-gradient(circle at 50% 50%, transparent 0, transparent 6px, #000 7px);
          mask: radial-gradient(circle at 50% 50%, transparent 0, transparent 6px, #000 7px);
}
.topbar nav {
  display: flex;
  gap: 36px;
  align-items: center;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.topbar nav a {
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,0.65);
  position: relative;
  letter-spacing: 0.02em;
  padding: 6px 0;
  transition: all .25s;
}
.topbar nav a:hover {
  color: #fff;
  transform: translateY(-1px);
}
.topbar nav a.active {
  color: #fff;
}
.topbar nav a.active::after,
.topbar nav a:hover::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  border-radius: 2px;
  animation: navUnderline .3s ease-out;
}
@keyframes navUnderline {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
.topbar .user-menu {
  display: flex;
  align-items: center;
  gap: 14px;
  position: relative;
}
.topbar .icon-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: rgba(255,255,255,0.7);
  transition: all .25s;
  font-size: 16px;
}
.topbar .icon-btn:hover {
  background: rgba(212,175,55,0.15);
  border-color: rgba(212,175,55,0.4);
  color: var(--brand);
  transform: translateY(-1px);
}
.topbar .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .25s;
  position: relative;
}
.topbar .avatar:hover {
  border-color: var(--brand-2);
  transform: scale(1.08);
  box-shadow: 0 0 24px rgba(212,175,55,0.5);
}
.topbar .avatar.has-img {
  background: var(--surface-2);
  background-size: cover;
  background-position: center;
  color: transparent;
}

/* User dropdown menu */
.user-dropdown {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 240px;
  background: rgba(15,15,20,0.98);
  border: 1px solid rgba(212,175,55,0.18);
  border-radius: 14px;
  padding: 8px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all .25s;
  z-index: 200;
}
.user-dropdown.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.user-dropdown .user-info {
  padding: 14px 16px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 6px;
}
.user-dropdown .user-info .name {
  font-weight: 700;
  font-size: 14px;
  color: #fff;
  margin-bottom: 2px;
}
.user-dropdown .user-info .email {
  font-size: 11px;
  color: var(--text-2);
}
.user-dropdown a, .user-dropdown button {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  transition: all .15s;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.user-dropdown a:hover, .user-dropdown button:hover {
  background: rgba(212,175,55,0.1);
  color: var(--brand-2);
}
.user-dropdown .divider {
  height: 1px;
  background: rgba(255,255,255,0.06);
  margin: 6px 0;
}
.user-dropdown .danger {
  color: #FF6B6B;
}
.user-dropdown .danger:hover {
  background: rgba(255,107,107,0.1);
  color: #FF8585;
}

/* ============================================
   HERO — Netflix featured banner
   ============================================ */
.hero {
  position: relative;
  height: 78vh;
  min-height: 560px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 0 56px 120px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center 30%;
  z-index: 0;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero-eyebrow {
  display: inline-block;
  padding: 6px 14px;
  background: var(--brand-dim);
  color: var(--brand-2);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 16px;
  text-shadow: 0 4px 30px rgba(0,0,0,0.7);
}
.hero p {
  font-size: 17px;
  color: var(--text-2);
  margin-bottom: 28px;
  max-width: 540px;
  line-height: 1.55;
}
.hero-actions { display: flex; gap: 12px; align-items: center; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  border: none;
  transition: all .2s;
  font-family: inherit;
}
.btn-primary {
  background: #fff;
  color: #000;
}
.btn-primary:hover { background: var(--brand-2); transform: translateY(-1px); }
.btn-secondary {
  background: rgba(109,109,120,0.6);
  color: #fff;
  backdrop-filter: blur(10px);
}
.btn-secondary:hover { background: rgba(140,140,150,0.7); }
.btn-brand {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  color: #000;
}
.btn-brand:hover { transform: translateY(-1px); box-shadow: 0 10px 30px var(--brand-dim); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-2);
}
.btn-ghost:hover { background: var(--surface); border-color: var(--text-2); }

/* ============================================
   ROWS / CAROUSELS — Netflix-style
   ============================================ */
.row {
  margin: 0 0 48px;
  padding: 0 56px;
}
.row-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 16px;
}
.row-title {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.row-title .accent { color: var(--brand-2); }
.row-link { font-size: 13px; color: var(--text-2); font-weight: 500; }
.row-link:hover { color: var(--brand-2); }

.row { position: relative; }
.row-scroll {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  scroll-behavior: smooth;
}
.row-scroll::-webkit-scrollbar { display: none; height: 0; width: 0; }

/* Carousel arrows */
.row-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 96px;
  background: rgba(10, 10, 12, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  z-index: 5;
  opacity: 0;
  transition: all 0.25s;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  user-select: none;
}
.row:hover .row-arrow { opacity: 1; }
.row-arrow:hover {
  background: rgba(212, 175, 55, 0.95);
  color: #000;
  transform: translateY(-50%) scale(1.08);
  border-color: var(--brand);
}
.row-arrow.prev { left: 8px; }
.row-arrow.next { right: 8px; }
.row-arrow.hidden { opacity: 0 !important; pointer-events: none; }

/* ============================================
   CARDS — Poster vertical 2:3 (Netflix-style)
   ============================================ */
.card {
  flex: 0 0 auto;
  width: 240px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform .3s cubic-bezier(.2,.9,.3,1), box-shadow .3s;
  scroll-snap-align: start;
  position: relative;
  background: var(--surface);
}
.card:hover {
  transform: scale(1.06);
  z-index: 10;
  box-shadow: var(--shadow-hero);
}
.card .thumb {
  aspect-ratio: 3/4;
  background-size: cover;
  background-position: center;
  background-color: var(--surface-2);
  position: relative;
  width: 100%;
}
.card.locked {
  cursor: pointer;
}
.card.locked .thumb {
  filter: grayscale(70%) brightness(0.85) contrast(1.05);
  transition: filter .3s;
}
.card.locked:hover .thumb {
  filter: grayscale(0%) brightness(1) contrast(1);
}
.card.locked .thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, transparent 40%, transparent 60%, rgba(0,0,0,0.55) 100%);
  z-index: 1;
}
.card.locked .lock-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(0,0,0,0.75);
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  z-index: 2;
  backdrop-filter: blur(4px);
}
.card.locked:hover .lock-icon {
  background: rgba(212,175,55,0.85);
  border-color: #D4AF37;
  transform: translate(-50%, -50%) scale(1.1);
}
.card.locked .card-info h4 {
  color: var(--text-2);
}
.card.locked .unlock-cta {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  background: linear-gradient(135deg, #D4AF37 0%, #F5D67B 100%);
  color: #000;
  text-align: center;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0;
  transform: translateY(8px);
  transition: all .3s;
  z-index: 3;
}
.card.locked:hover .unlock-cta {
  opacity: 1;
  transform: translateY(0);
}
.card .thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity .3s;
}
.card:hover .thumb::after { opacity: 1; }
.card .badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--red);
  color: #fff;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card .badge.new { background: var(--brand); color: #000; }
.card-info {
  padding: 14px 16px 16px;
}
.card-info h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-info .meta {
  font-size: 12px;
  color: var(--text-2);
  display: flex;
  gap: 8px;
  align-items: center;
}
.card-info .meta .sep { color: var(--muted); }
.card-info .progress {
  margin-top: 10px;
  height: 3px;
  background: var(--surface-2);
  border-radius: 2px;
  overflow: hidden;
}
.card-info .progress-bar {
  height: 100%;
  background: var(--brand);
  transition: width .4s;
}

/* Big card (first row Continue Watching) */
.card-big { width: 280px; }
.card-big .thumb { aspect-ratio: 4/5; }
.card-big h4 { font-size: 18px; }

/* Catalog grid uses vertical poster cards */
.catalog-grid {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* ============================================
   COURSE PAGE — Sections
   ============================================ */
.course-hero {
  position: relative;
  height: 50vh;
  min-height: 360px;
  padding: 0 56px 60px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.course-hero .hero-bg { background-size: cover; background-position: center; }
.course-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10,10,12,0.2) 0%, rgba(10,10,12,0.5) 60%, #0a0a0c 100%);
}
.course-hero-content { position: relative; z-index: 2; max-width: 720px; }
.course-hero h1 { font-size: 44px; margin-bottom: 14px; }
.course-hero .meta-row {
  display: flex;
  gap: 18px;
  align-items: center;
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 24px;
}
.course-hero .meta-row strong { color: var(--text); }

.section-group {
  padding: 40px 56px;
  border-top: 1px solid var(--border);
}
.section-group:first-of-type { border-top: none; padding-top: 0; }
.section-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.section-header .section-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--brand-dim);
  color: var(--brand-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}
.section-header h2 {
  font-size: 20px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.section-header .lesson-count {
  font-size: 13px;
  color: var(--text-2);
  margin-left: auto;
  font-weight: 500;
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.lesson-card {
  display: flex;
  gap: 14px;
  padding: 10px;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all .2s;
  align-items: center;
}
.lesson-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-2);
  transform: translateX(4px);
}
.lesson-card .thumb {
  width: 96px;
  aspect-ratio: 16/9;
  background-size: cover;
  background-position: center;
  background-color: var(--surface-2);
  border-radius: 6px;
  flex-shrink: 0;
  position: relative;
}
.lesson-card .play-icon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: opacity .2s;
  border-radius: 6px;
}
.lesson-card:hover .play-icon { opacity: 1; }
.lesson-card .play-icon::after {
  content: '▶';
  font-size: 16px;
  color: var(--brand);
}
.lesson-card .info { flex: 1; min-width: 0; }
.lesson-card h5 {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}
.lesson-card .meta { font-size: 12px; color: var(--text-2); }
.lesson-card.completed .thumb::after {
  content: '✓';
  position: absolute;
  top: 4px;
  right: 4px;
  width: 20px;
  height: 20px;
  background: var(--green);
  color: #000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

/* ============================================
   LESSON/VIDEO PAGE
   ============================================ */
.player-wrap {
  max-width: 1400px;
  margin: 80px auto 0;
  padding: 0 56px 40px;
}
.player-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background: #000;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hero);
}
.player-container iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.lesson-meta {
  margin-top: 24px;
  display: flex;
  gap: 40px;
}
.lesson-meta .main { flex: 1; }
.lesson-meta h1 { font-size: 28px; margin-bottom: 8px; }
.lesson-meta .breadcrumb {
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 14px;
}
.lesson-meta .breadcrumb .section-label {
  color: var(--brand-2);
  font-weight: 600;
}
.lesson-sidebar {
  width: 320px;
  flex-shrink: 0;
}
.lesson-sidebar h3 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-2);
  margin-bottom: 14px;
}

/* ============================================
   CATALOG / GRID PAGE
   ============================================ */
.catalog-hero {
  position: relative;
  padding: 180px 56px 60px;
  min-height: 360px;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg-2);
}
.catalog-hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  filter: brightness(0.55) saturate(1.1);
  transform: scale(1.05);
  transition: opacity .6s;
}
.catalog-hero::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(10,10,12,0.55) 0%, rgba(10,10,12,0.7) 60%, var(--bg) 100%),
    radial-gradient(ellipse at 30% 40%, rgba(212,175,55,0.18), transparent 60%);
}
.catalog-hero h1 {
  font-size: 48px; margin-bottom: 10px; letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, var(--brand) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.catalog-hero p { color: var(--text-2); font-size: 17px; max-width: 560px; }

.catalog-filters {
  padding: 20px 56px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 72px;
  background: rgba(10,10,12,0.95);
  backdrop-filter: blur(20px);
  z-index: 10;
}
.chip {
  padding: 8px 16px;
  border-radius: 100px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all .2s;
}
.chip:hover { border-color: var(--border-2); color: var(--text); }
.chip.active {
  background: #fff;
  color: #000;
  border-color: #fff;
}

.catalog-grid {
  padding: 40px 56px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.catalog-grid .card { width: 100%; }

/* ============================================
   AUTH / LOGIN
   ============================================ */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  background:
    radial-gradient(1200px circle at top right, var(--brand-dim), transparent 50%),
    radial-gradient(800px circle at bottom left, rgba(74,158,255,0.08), transparent 60%),
    var(--bg);
}
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 44px;
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-hero);
}
.auth-card .logo {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.auth-card h2 {
  font-size: 22px;
  margin-bottom: 8px;
}
.auth-card .subtitle {
  color: var(--text-2);
  font-size: 14px;
  margin-bottom: 32px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-2);
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border .2s;
}
.form-group input:focus {
  outline: none;
  border-color: var(--brand);
}
.auth-card .btn { width: 100%; justify-content: center; margin-top: 8px; }

/* ============================================
   EMPTY / LOADING
   ============================================ */
.loading {
  padding: 80px 40px;
  text-align: center;
  color: var(--text-2);
  font-size: 14px;
}
.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--surface-2);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin: 0 auto 14px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .topbar { padding: 14px 20px; }
  .topbar nav { gap: 18px; }
  .hero, .course-hero { padding: 0 20px 60px; }
  .hero h1 { font-size: 34px; }
  .course-hero h1 { font-size: 28px; }
  .row, .section-group { padding-left: 20px; padding-right: 20px; }
  .card { width: 260px; }
  .card-big { width: 300px; }
  .catalog-hero, .catalog-filters, .catalog-grid { padding-left: 20px; padding-right: 20px; }
  .lesson-meta { flex-direction: column; }
  .lesson-sidebar { width: 100%; }
  .player-wrap { padding: 0 20px 40px; }
}

/* ============================================
   ADMIN PANEL — Sidebar layout (legacy + new)
   ============================================ */
.app {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
  background: var(--bg);
}
.sidebar {
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  overflow-y: auto;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .logo {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.sidebar .logo span { color: var(--brand-2); }
.nav-section { margin-top: 26px; }
.nav-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 0 12px;
  margin-bottom: 8px;
  font-weight: 600;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 2px;
  transition: all .15s;
}
.nav-link:hover {
  background: var(--surface);
  color: var(--text);
}
.nav-link.active {
  background: var(--brand-dim);
  color: var(--brand-2);
}
.nav-link svg { width: 18px; height: 18px; flex-shrink: 0; }

.main {
  padding: 36px 44px;
  min-width: 0;
}
.page-header { margin-bottom: 28px; }
.page-title {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.page-subtitle {
  color: var(--text-2);
  font-size: 14px;
}

/* GRID */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

/* STAT CARDS */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  transition: border .2s, transform .2s;
}
.stat-card:hover { border-color: var(--border-2); }
.stat-label {
  font-size: 12px;
  color: var(--text-2);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
}
.stat-value {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-meta {
  font-size: 12px;
  color: var(--muted);
}

/* GENERIC CARD (reused by admin shortcuts) */
.card-legacy, .admin-card-link {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  color: var(--text);
  display: block;
  transition: all .2s;
  cursor: pointer;
}
.card-legacy:hover, .admin-card-link:hover {
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* TABLE */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.table th, .table td {
  padding: 14px 18px;
  text-align: left;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.table th {
  background: var(--bg-2);
  font-weight: 600;
  color: var(--text-2);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.04em;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--surface-hover); }

/* BADGES */
.badge-green { background: var(--green-dim); color: var(--green); padding: 4px 10px; border-radius: 100px; font-size: 11px; font-weight: 600; }
.badge-orange { background: rgba(255,171,64,0.15); color: #FFAB40; padding: 4px 10px; border-radius: 100px; font-size: 11px; font-weight: 600; }
.badge-red { background: var(--red-dim); color: var(--red); padding: 4px 10px; border-radius: 100px; font-size: 11px; font-weight: 600; }
.badge-blue { background: rgba(74,158,255,0.15); color: var(--blue); padding: 4px 10px; border-radius: 100px; font-size: 11px; font-weight: 600; }

/* MOBILE NAV TOGGLE (admin) */
.mobile-nav-toggle { display: none; }

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: -260px;
    top: 0;
    width: 240px;
    z-index: 100;
    transition: left .25s;
  }
  .sidebar.open { left: 0; }
  .mobile-nav-toggle {
    display: flex;
    position: fixed;
    top: 18px;
    left: 18px;
    z-index: 99;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px;
    cursor: pointer;
    color: var(--text);
  }
  .main { padding: 80px 20px 40px; }
  .grid-4, .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 540px) {
  .grid-4, .grid-3 { grid-template-columns: 1fr; }
}