/* ===================================================
   EDUFLIX — MAIN STYLESHEET
   =================================================== */

:root {
  --bg: #0a0a0a;
  --bg2: #141414;
  --bg3: #1c1c1c;
  --bg4: #242424;
  --red: #e50914;
  --red-hover: #f40612;
  --red-dark: #b20710;
  --white: #ffffff;
  --gray: #aaaaaa;
  --gray2: #777777;
  --border: rgba(255,255,255,0.08);
  --card-radius: 8px;
  --transition: 0.25s ease;
  --navbar-h: 68px;
  --font: 'Inter', sans-serif;
  --shadow: 0 8px 40px rgba(0,0,0,0.6);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.5);
}

/* ---- RESET ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--white);
  overflow-x: hidden;
  min-height: 100vh;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: #444; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #666; }

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--navbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.95) 0%, transparent 100%);
  transition: background var(--transition);
}
.navbar.scrolled {
  background: rgba(10,10,10,0.98);
  box-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.navbar-left { display: flex; align-items: center; gap: 32px; }
.navbar-right { display: flex; align-items: center; gap: 16px; }

.logo {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: -1px;
}
.logo span { color: var(--red); }

.nav-links { display: flex; gap: 20px; }
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active { color: var(--white); }

/* Search */
.btn-search {
  color: var(--white);
  font-size: 1.1rem;
  padding: 6px;
  background: none;
  transition: color var(--transition);
}
.btn-search:hover { color: var(--red); }

.search-bar {
  display: none;
  align-items: center;
  background: rgba(20,20,20,0.95);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  padding: 6px 12px;
  gap: 8px;
}
.search-bar.active { display: flex; }
.search-bar input {
  background: none;
  border: none;
  outline: none;
  color: var(--white);
  font-size: 0.9rem;
  width: 200px;
  font-family: var(--font);
}
.search-bar input::placeholder { color: var(--gray2); }
.close-search { color: var(--gray); font-size: 0.9rem; }
.close-search:hover { color: var(--white); }

/* Bell */
.notification-bell {
  position: relative;
  font-size: 1.1rem;
  cursor: pointer;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition);
}
.notification-bell:hover { color: var(--white); }
.notification-bell .badge {
  position: absolute;
  top: -6px; right: -6px;
  background: var(--red);
  color: white;
  font-size: 0.6rem;
  font-weight: 700;
  width: 16px; height: 16px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}

/* User Menu */
.user-menu { position: relative; }
.avatar {
  display: flex; align-items: center; gap: 6px;
  cursor: pointer;
}
.avatar img { border-radius: 4px; width: 36px; height: 36px; object-fit: cover; }
.avatar .fa-caret-down { font-size: 0.75rem; color: var(--gray); transition: transform var(--transition); }
.user-menu:hover .fa-caret-down { transform: rotate(180deg); }

.dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  background: rgba(20,20,20,0.97);
  border: 1px solid var(--border);
  border-radius: 6px;
  min-width: 180px;
  padding: 8px 0;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.user-menu:hover .dropdown { display: block; }
.dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.85);
  transition: background var(--transition), color var(--transition);
}
.dropdown a:hover { background: rgba(255,255,255,0.08); color: var(--white); }
.dropdown a i { width: 16px; color: var(--gray2); }
.dropdown .divider { border-top: 1px solid var(--border); margin: 6px 0; }

/* Hamburger */
.hamburger { display: none; color: var(--white); font-size: 1.3rem; padding: 6px; }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--navbar-h); left: 0; right: 0;
  background: rgba(10,10,10,0.98);
  z-index: 999;
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
}
.mobile-menu.open { display: block; }
.mobile-menu ul { display: flex; flex-direction: column; }
.mobile-menu a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--transition);
}
.mobile-menu a:hover { background: rgba(255,255,255,0.06); color: var(--white); }
.mobile-menu a i { width: 20px; color: var(--red); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  height: 90vh;
  min-height: 520px;
  max-height: 850px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; }
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: brightness(0.55);
}
.hero-video {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center center;
  filter: brightness(0.55);
  pointer-events: none;
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    to right,
    rgba(0,0,0,0.85) 0%,
    rgba(0,0,0,0.4) 50%,
    transparent 100%
  ),
  linear-gradient(
    to top,
    rgba(10,10,10,1) 0%,
    rgba(10,10,10,0.3) 40%,
    transparent 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 580px;
  padding: 0 4% 80px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--red);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 14px;
  text-shadow: 2px 2px 20px rgba(0,0,0,0.5);
}
.hero-title span { color: var(--red); }
.hero-desc {
  font-size: clamp(0.875rem, 1.5vw, 1.05rem);
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
  margin-bottom: 20px;
  max-width: 480px;
}
.hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.hero-meta span { font-size: 0.875rem; color: rgba(255,255,255,0.75); }
.hero-meta .separator { color: rgba(255,255,255,0.3); }
.hero-meta .rating { color: #ffd700; font-weight: 600; }
.hero-meta .badge-level {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
}
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }

.hero-scroll-indicator {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bounce 2s infinite;
  color: rgba(255,255,255,0.4);
  font-size: 1.2rem;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--red);
  color: white;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 6px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
  font-family: var(--font);
}
.btn-primary:hover {
  background: var(--red-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(229,9,20,0.4);
}
.btn-primary.btn-sm { padding: 8px 18px; font-size: 0.85rem; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  color: white;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: 6px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
  transition: background var(--transition), transform var(--transition);
  cursor: pointer;
  font-family: var(--font);
}
.btn-secondary:hover { background: rgba(255,255,255,0.25); transform: translateY(-1px); }
.btn-secondary.btn-sm { padding: 8px 16px; font-size: 0.85rem; }

.btn-icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.6);
  color: white;
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), background var(--transition);
  background: none;
  cursor: pointer;
}
.btn-icon:hover { border-color: white; background: rgba(255,255,255,0.15); }

/* ============================================================
   CONTINUE WATCHING BANNER
   ============================================================ */
.continue-watching-banner {
  background: linear-gradient(135deg, rgba(229,9,20,0.12) 0%, rgba(20,20,20,0.95) 100%);
  border-top: 1px solid rgba(229,9,20,0.2);
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.container { max-width: 1400px; margin: 0 auto; padding: 0 4%; }
.progress-card-featured {
  display: flex;
  align-items: center;
  gap: 20px;
  max-width: 700px;
}
.progress-card-featured-thumb {
  position: relative;
  width: 140px;
  min-width: 140px;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
}
.progress-card-featured-thumb img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  transition: transform var(--transition);
}
.progress-card-featured-thumb:hover img { transform: scale(1.05); }
.play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.progress-card-featured-thumb:hover .play-overlay { opacity: 1; }
.play-overlay i { font-size: 1.5rem; color: white; }
.progress-label {
  font-size: 0.75rem;
  color: var(--red);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  display: flex; align-items: center; gap: 6px;
}
.progress-card-featured-info h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.progress-bar-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.progress-bar {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  background: var(--red);
  border-radius: 2px;
  transition: width 0.5s ease;
}
.progress-bar-wrap span { font-size: 0.75rem; color: var(--gray); white-space: nowrap; }
.btn-continue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--red);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 5px;
  transition: background var(--transition);
}
.btn-continue:hover { background: var(--red-hover); }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content { padding: 20px 0 60px; }

/* ============================================================
   SECTIONS
   ============================================================ */
.section { padding: 32px 0 8px; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 4%;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(1rem, 2vw, 1.3rem);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-header h2 i { color: var(--red); font-size: 0.9em; }
.see-all {
  font-size: 0.8rem;
  color: var(--gray);
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--transition);
  white-space: nowrap;
}
.see-all:hover { color: var(--white); }

/* ============================================================
   CAROUSEL
   ============================================================ */
.carousel-wrap {
  position: relative;
  padding: 0 4%;
}
.carousel {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  padding-bottom: 16px;
  scroll-behavior: smooth;
}
.carousel::-webkit-scrollbar { display: none; }

.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-60%);
  z-index: 10;
  background: rgba(10,10,10,0.8);
  color: white;
  width: 44px; height: 80px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), opacity var(--transition);
  opacity: 0;
  backdrop-filter: blur(4px);
}
.carousel-wrap:hover .carousel-btn { opacity: 1; }
.carousel-btn:hover { background: rgba(30,30,30,0.95); }
.carousel-btn.prev { left: 0; border-radius: 0 4px 4px 0; }
.carousel-btn.next { right: 0; border-radius: 4px 0 0 4px; }

/* ============================================================
   COURSE CARD
   ============================================================ */
.course-card {
  position: relative;
  min-width: 220px;
  max-width: 220px;
  scroll-snap-align: start;
  border-radius: var(--card-radius);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), z-index 0s;
  transform-origin: center center;
  flex-shrink: 0;
  background: var(--bg3);
}
.course-card:hover {
  transform: scale(1.12);
  z-index: 50;
  box-shadow: var(--shadow);
}
/* Fix for edge cards */
.carousel .course-card:first-child:hover { transform-origin: left center; }
.carousel .course-card:last-child:hover { transform-origin: right center; }

.card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg4);
}
.card-thumb img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.course-card:hover .card-thumb img { transform: scale(1.05); }

.card-play-btn {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition);
}
.card-play-btn i {
  width: 46px; height: 46px;
  background: var(--red);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: white;
  box-shadow: 0 4px 15px rgba(229,9,20,0.5);
  padding-left: 3px;
}
.course-card:hover .card-play-btn { opacity: 1; }

.card-badges {
  position: absolute;
  top: 8px; left: 8px;
  display: flex; gap: 4px; flex-wrap: wrap;
}
.card-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.badge-new { background: var(--red); color: white; }
.badge-hot { background: #ff6b35; color: white; }
.badge-free { background: #00c853; color: white; }
.badge-top { background: #ffd700; color: #000; }

.card-progress {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: rgba(255,255,255,0.15);
}
.card-progress-fill { height: 100%; background: var(--red); }

.card-body {
  padding: 10px 12px 12px;
  background: var(--bg3);
  transition: background var(--transition);
}
.course-card:hover .card-body { background: var(--bg4); }
.card-title {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--gray);
}
.card-meta .star { color: #ffd700; }

/* Expanded Card (on hover) */
.card-expanded {
  display: none;
  padding: 0 12px 12px;
  background: var(--bg4);
  border-top: 1px solid var(--border);
}
.course-card:hover .card-expanded { display: block; }
.card-expanded p {
  font-size: 0.75rem;
  color: var(--gray);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}
.card-btn {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: 1.5px solid rgba(255,255,255,0.4);
  color: white;
  font-size: 0.75rem;
  display: flex; align-items: center; justify-content: center;
  transition: border-color var(--transition), background var(--transition);
  background: none;
  cursor: pointer;
}
.card-btn:hover { border-color: white; background: rgba(255,255,255,0.12); }
.card-btn.play-small {
  background: var(--red);
  border-color: var(--red);
  width: 34px; height: 34px;
  font-size: 0.85rem;
}
.card-btn.play-small:hover { background: var(--red-hover); }

/* Top 10 Card */
.top10-card {
  min-width: 260px;
  max-width: 260px;
}
.top10-card .card-thumb { aspect-ratio: 16/9; }
.top10-number {
  position: absolute;
  bottom: -8px;
  left: -4px;
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 3px var(--white);
  text-shadow: 3px 3px 0 rgba(0,0,0,0.5);
  z-index: 5;
}

/* ============================================================
   CATEGORIES GRID
   ============================================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
  padding: 0 4%;
}
.category-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--clr) 20%, var(--bg3)), var(--bg3));
  border: 1px solid color-mix(in srgb, var(--clr) 30%, transparent);
  border-radius: var(--card-radius);
  padding: 20px 16px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
}
.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--clr) 0%, transparent);
  transition: background var(--transition);
}
.category-card:hover::before { background: color-mix(in srgb, var(--clr) 15%, transparent); }
.category-card:hover { transform: translateY(-4px); box-shadow: 0 8px 30px rgba(0,0,0,0.4); }
.category-card i {
  font-size: 1.6rem;
  color: var(--clr);
  position: relative;
}
.category-card span {
  font-size: 0.9rem;
  font-weight: 700;
  position: relative;
}
.category-card small {
  font-size: 0.72rem;
  color: var(--gray);
  position: relative;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(4px);
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg2);
  border-radius: 12px;
  width: 100%;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow);
  animation: modalIn 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
  position: absolute;
  top: 12px; right: 12px;
  z-index: 10;
  background: rgba(0,0,0,0.5);
  color: white;
  width: 36px; height: 36px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
  transition: background var(--transition);
  cursor: pointer;
}
.modal-close:hover { background: rgba(0,0,0,0.8); }
.modal-hero {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: 12px 12px 0 0;
}
.modal-hero img { width: 100%; height: 100%; object-fit: cover; }
.modal-hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(20,20,20,1) 0%, transparent 60%);
}
.modal-hero-content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 20px 24px;
}
.modal-hero-content h2 {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 900;
  margin-bottom: 12px;
}
.modal-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.modal-body {
  padding: 20px 24px 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px;
  align-items: start;
}
.modal-info p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.6;
  margin-bottom: 12px;
}
.modal-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.modal-tags span {
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  padding: 3px 10px;
  font-size: 0.75rem;
  color: var(--gray);
}
.modal-stats {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 110px;
}
.modal-stats > div {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}
.modal-stats strong { font-size: 1.1rem; font-weight: 800; }
.modal-stats small { font-size: 0.7rem; color: var(--gray); text-transform: uppercase; letter-spacing: 0.5px; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 20px;
}
.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 4%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.footer-logo {
  font-size: 1.6rem;
  font-weight: 900;
  letter-spacing: -0.5px;
}
.footer-logo span { color: var(--red); }
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
}
.footer-links a {
  font-size: 0.8rem;
  color: var(--gray2);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--white); }
.footer-copy { font-size: 0.75rem; color: var(--gray2); }

/* ============================================================
   PAGE: PLAYER / CURSO
   ============================================================ */
.player-page { padding-top: var(--navbar-h); background: var(--bg); }
.player-container { display: flex; height: calc(100vh - var(--navbar-h)); }

.player-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.video-wrap {
  position: relative;
  background: #000;
  aspect-ratio: 16/9;
  width: 100%;
  max-height: 70vh;
}
.video-placeholder {
  width: 100%; height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #000;
  color: white;
  cursor: pointer;
  position: relative;
}
.video-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}
.video-placeholder .big-play {
  position: relative;
  z-index: 2;
  width: 80px; height: 80px;
  background: var(--red);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  box-shadow: 0 0 40px rgba(229,9,20,0.5);
  transition: transform var(--transition), box-shadow var(--transition);
  padding-left: 6px;
}
.video-placeholder:hover .big-play {
  transform: scale(1.1);
  box-shadow: 0 0 60px rgba(229,9,20,0.7);
}
.video-placeholder .video-title {
  position: relative;
  z-index: 2;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 16px;
  color: rgba(255,255,255,0.8);
}

.player-info { padding: 20px 24px; overflow-y: auto; flex: 1; }
.player-course-title { font-size: 1.3rem; font-weight: 800; margin-bottom: 6px; }
.player-lesson-title { font-size: 1rem; color: var(--gray); margin-bottom: 16px; }
.player-meta-row { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.player-tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.player-tab {
  padding: 10px 18px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray2);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  cursor: pointer;
  background: none;
}
.player-tab.active { color: var(--white); border-bottom-color: var(--red); }
.player-tab-content { display: none; }
.player-tab-content.active { display: block; }

/* Sidebar: Lesson List */
.player-sidebar {
  width: 340px;
  min-width: 280px;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  flex-shrink: 0;
}
.sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg2);
  z-index: 5;
}
.sidebar-header h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 2px; }
.sidebar-header small { font-size: 0.75rem; color: var(--gray); }
.sidebar-progress-bar {
  height: 3px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  margin-top: 10px;
  overflow: hidden;
}
.sidebar-progress-fill { height: 100%; background: var(--red); }

.lesson-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.03);
  cursor: pointer;
  transition: background var(--transition);
  position: relative;
}
.lesson-item:hover { background: rgba(255,255,255,0.04); }
.lesson-item.active { background: rgba(229,9,20,0.08); border-left: 3px solid var(--red); }
.lesson-item.completed .lesson-number { color: var(--red); }

.lesson-number {
  font-size: 0.75rem;
  color: var(--gray2);
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}
.lesson-thumb {
  width: 68px; min-width: 68px;
  aspect-ratio: 16/9;
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg4);
  position: relative;
}
.lesson-thumb img { width: 100%; height: 100%; object-fit: cover; }
.lesson-thumb .done-overlay {
  position: absolute; inset: 0;
  background: rgba(229,9,20,0.6);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem;
}
.lesson-details { flex: 1; min-width: 0; }
.lesson-details h4 {
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 3px;
}
.lesson-details span { font-size: 0.7rem; color: var(--gray2); }

/* Module/Section header */
.module-header {
  padding: 14px 20px 10px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}
.module-header h4 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gray); }
.module-header span { font-size: 0.7rem; color: var(--gray2); }

/* ============================================================
   PAGE: CATALOG / MY COURSES
   ============================================================ */
.catalog-page { padding-top: calc(var(--navbar-h) + 20px); padding-bottom: 60px; }
.page-header {
  padding: 0 4% 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h1 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; }
.filter-row {
  padding: 0 4% 24px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--bg3);
  color: var(--gray);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--red);
  border-color: var(--red);
  color: white;
}
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  padding: 0 4%;
}
.course-grid .course-card {
  min-width: unset;
  max-width: unset;
  transform-origin: center;
}

/* ============================================================
   PAGE: LOGIN
   ============================================================ */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.login-bg {
  position: absolute; inset: 0;
}
.login-bg img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.25); }
.login-bg::after {
  content: '';
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.5);
}
.login-box {
  position: relative;
  z-index: 2;
  background: rgba(0,0,0,0.85);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.login-logo {
  text-align: center;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 8px;
}
.login-logo span { color: var(--red); }
.login-subtitle {
  text-align: center;
  color: var(--gray);
  font-size: 0.875rem;
  margin-bottom: 28px;
}
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 600; margin-bottom: 6px; color: rgba(255,255,255,0.8); }
.form-group input {
  width: 100%;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  padding: 12px 14px;
  color: white;
  font-size: 0.9rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}
.form-group input:focus { border-color: var(--red); background: rgba(255,255,255,0.1); }
.form-group input::placeholder { color: var(--gray2); }
.login-btn {
  width: 100%;
  padding: 13px;
  background: var(--red);
  color: white;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  margin-top: 8px;
  transition: background var(--transition), transform var(--transition);
  font-family: var(--font);
}
.login-btn:hover { background: var(--red-hover); transform: translateY(-1px); }
.login-extra { display: flex; justify-content: space-between; margin-top: 14px; }
.login-extra a { font-size: 0.8rem; color: var(--gray); transition: color var(--transition); }
.login-extra a:hover { color: white; }
.login-divider { display: flex; align-items: center; gap: 12px; margin: 20px 0; }
.login-divider span { font-size: 0.75rem; color: var(--gray2); white-space: nowrap; }
.login-divider::before, .login-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}
.register-link { text-align: center; margin-top: 16px; font-size: 0.85rem; color: var(--gray); }
.register-link a { color: var(--red); font-weight: 600; }
.register-link a:hover { color: var(--red-hover); text-decoration: underline; }

/* ============================================================
   STATS STRIP
   ============================================================ */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 0 0 8px;
}
.stat-item {
  background: var(--bg2);
  padding: 20px;
  text-align: center;
}
.stat-item strong { display: block; font-size: 1.6rem; font-weight: 900; color: var(--red); }
.stat-item span { font-size: 0.8rem; color: var(--gray); }

/* ============================================================
   TOAST NOTIFICATION
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg4);
  border: 1px solid var(--border);
  border-left: 4px solid var(--red);
  color: white;
  padding: 12px 18px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  max-width: 300px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.toast i { color: var(--red); }
@keyframes toastIn { from { opacity:0; transform: translateX(30px); } to { opacity:1; transform: translateX(0); } }
@keyframes toastOut { from { opacity:1; transform: translateX(0); } to { opacity:0; transform: translateX(30px); } }

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* TABLET */
@media (max-width: 1024px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .course-card { min-width: 190px; max-width: 190px; }
  .player-sidebar { width: 280px; }
  .modal-body { grid-template-columns: 1fr; }
  .modal-stats { flex-direction: row; justify-content: space-around; }
  .modal-stats > div { align-items: center; }
  .categories-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

@media (max-width: 900px) {
  .player-container { flex-direction: column; height: auto; }
  .player-sidebar { width: 100%; min-height: 300px; border-left: none; border-top: 1px solid var(--border); }
  .video-wrap { max-height: 50vw; }
}

/* MOBILE */
@media (max-width: 640px) {
  :root { --navbar-h: 60px; }
  .logo { font-size: 1.4rem; }
  .hero { height: 75vw; min-height: 340px; max-height: 520px; }
  .hero-content { padding: 0 5% 60px; }
  .hero-actions { gap: 8px; }
  .btn-primary, .btn-secondary { padding: 10px 18px; font-size: 0.85rem; }
  .hero-desc { display: none; }
  .progress-card-featured { flex-direction: column; align-items: flex-start; }
  .progress-card-featured-thumb { width: 100%; }
  .course-card { min-width: 150px; max-width: 150px; }
  .top10-card { min-width: 180px; max-width: 180px; }
  .top10-number { font-size: 3.5rem; }
  .categories-grid { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .category-card { padding: 14px 10px; }
  .category-card i { font-size: 1.2rem; }
  .category-card span { font-size: 0.75rem; }
  .modal { max-height: 95vh; }
  .modal-body { padding: 16px; }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .notification-bell { display: none; }
  .login-box { padding: 28px 20px; margin: 16px; }
  .carousel-btn { display: none; }
  .course-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .section-header h2 { font-size: 0.95rem; }
}

@media (max-width: 360px) {
  .course-card { min-width: 130px; max-width: 130px; }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
}