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

/* ============================================================
   ADWISEN TRAINING ACADEMY — Brand-Aligned Design System
   
   Brand tokens from brand.identity.md v4.0:
   - Navy:       #243646 (primary)
   - Deep Navy:  #091526 (background)
   - Amber:      #D4953A (accent / CTA)
   - Glass Blue: #5A7A94 (tech accent, non-text only)
   - Fonts:      Outfit (display), Inter (body)
   - Radius:     0px (sharp edges)
   - Spacing:    4px base
   ============================================================ */

:root {
  /* Brand Colors */
  --navy: #243646;
  --navy-deep: #091526;
  --navy-light: #2e4459;
  --navy-surface: #1a2d3d;
  --amber: #D4953A;
  --amber-light: #e0a854;
  --amber-dim: rgba(212, 149, 58, 0.12);
  --glass-blue: #5A7A94;
  --glass-blue-dim: rgba(90, 122, 148, 0.12);

  /* Surfaces */
  --bg-primary: #091526;
  --bg-secondary: #0f1e2e;
  --bg-card: rgba(26, 45, 61, 0.5);
  --bg-card-hover: rgba(36, 54, 70, 0.65);
  --bg-module: rgba(255, 255, 255, 0.02);
  --bg-module-hover: rgba(255, 255, 255, 0.05);

  /* Borders */
  --border-subtle: rgba(90, 122, 148, 0.12);
  --border-hover: rgba(90, 122, 148, 0.25);
  --border-amber: rgba(212, 149, 58, 0.3);

  /* Text */
  --text-primary: #e2e6ea;
  --text-secondary: #8899a8;
  --text-muted: #566878;

  /* Track accent colors — muted tones derived from brand */
  --track1-color: var(--glass-blue);
  --track1-bg: var(--glass-blue-dim);
  --track2-color: #8b7ec8;
  --track2-bg: rgba(139, 126, 200, 0.12);
  --track3-color: var(--amber);
  --track3-bg: var(--amber-dim);
  --track4-color: #5aac8b;
  --track4-bg: rgba(90, 172, 139, 0.12);

  /* System */
  --radius: 0px;
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  --spacing-unit: 4px;
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.25);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle ambient glow — navy tones only */
body::before {
  content: '';
  position: fixed;
  top: -30%;
  left: -15%;
  width: 60%;
  height: 60%;
  background: radial-gradient(ellipse, rgba(36, 54, 70, 0.3) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============ NAVIGATION ============ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  backdrop-filter: blur(16px);
  background: rgba(9, 21, 38, 0.85);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.nav.scrolled {
  padding: 10px 32px;
  background: rgba(9, 21, 38, 0.95);
}

.nav-logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--amber);
}

.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius);
  transition: var(--transition);
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

/* ============ HERO ============ */
.hero {
  position: relative;
  padding: 120px 32px 64px;
  text-align: center;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid var(--border-amber);
  background: var(--amber-dim);
  color: var(--amber);
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
  animation: fadeInUp 0.5s ease-out;
}

.hero h1 {
  font-family: 'Outfit', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 16px;
  color: var(--text-primary);
  animation: fadeInUp 0.5s ease-out 0.08s both;
}

.hero p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
  animation: fadeInUp 0.5s ease-out 0.16s both;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 40px;
  animation: fadeInUp 0.5s ease-out 0.24s both;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--amber);
}

.hero-stat-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* Amber accent line under hero */
.hero::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: var(--amber);
  margin: 48px auto 0;
  opacity: 0.5;
}

/* ============ TRACKS SECTION ============ */
.tracks {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 32px 96px;
}

.track {
  margin-bottom: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.track:hover {
  border-color: var(--border-hover);
}

.track-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px 28px;
  cursor: pointer;
  user-select: none;
  transition: var(--transition);
}

.track-header:hover {
  background: var(--bg-card-hover);
}

.track-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  border: 1px solid var(--border-subtle);
}

.track[data-track="1"] .track-icon { background: var(--track1-bg); border-color: rgba(90, 122, 148, 0.2); }
.track[data-track="2"] .track-icon { background: var(--track2-bg); border-color: rgba(139, 126, 200, 0.2); }
.track[data-track="3"] .track-icon { background: var(--track3-bg); border-color: rgba(212, 149, 58, 0.2); }
.track[data-track="4"] .track-icon { background: var(--track4-bg); border-color: rgba(90, 172, 139, 0.2); }

.track-info {
  flex: 1;
}

.track-level {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 4px;
}

.track[data-track="1"] .track-level { color: var(--track1-color); }
.track[data-track="2"] .track-level { color: var(--track2-color); }
.track[data-track="3"] .track-level { color: var(--track3-color); }
.track[data-track="4"] .track-level { color: var(--track4-color); }

.track-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.track-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 6px;
}

.track-meta span {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.track-chevron {
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.track.open .track-chevron {
  transform: rotate(180deg);
}

/* ============ MODULES ============ */
.track-modules {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.track.open .track-modules {
  max-height: 2000px;
}

.modules-grid {
  padding: 0 20px 20px;
  display: grid;
  gap: 8px;
}

.module-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  background: var(--bg-module);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.module-card:hover {
  background: var(--bg-module-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.module-number {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.track[data-track="1"] .module-number { background: var(--track1-bg); color: var(--track1-color); }
.track[data-track="2"] .module-number { background: var(--track2-bg); color: var(--track2-color); }
.track[data-track="3"] .module-number { background: var(--track3-bg); color: var(--track3-color); }
.track[data-track="4"] .module-number { background: var(--track4-bg); color: var(--track4-color); }

.module-content {
  flex: 1;
  min-width: 0;
}

.module-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.module-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.module-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.module-time {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.module-badge {
  font-size: 0.6rem;
  font-weight: 600;
  padding: 3px 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.module-badge.free {
  background: var(--track4-bg);
  color: var(--track4-color);
}

.module-badge.course {
  background: var(--track1-bg);
  color: var(--track1-color);
}

.module-badge.internal {
  background: var(--amber-dim);
  color: var(--amber);
}

.module-link-icon {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.module-card:hover .module-link-icon {
  color: var(--amber);
  transform: translateX(2px);
}

/* ============ FOOTER ============ */
.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 32px;
  border-top: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.78rem;
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.track {
  opacity: 0;
  animation: fadeInUp 0.4s ease-out forwards;
}

.track:nth-child(1) { animation-delay: 0.05s; }
.track:nth-child(2) { animation-delay: 0.1s; }
.track:nth-child(3) { animation-delay: 0.15s; }
.track:nth-child(4) { animation-delay: 0.2s; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .nav { padding: 12px 16px; }
  .nav-links { display: none; }
  .hero { padding: 96px 20px 48px; }
  .hero-stats { gap: 24px; }
  .hero-stat-value { font-size: 1.5rem; }
  .tracks { padding: 16px 16px 64px; }
  .track-header { padding: 16px 20px; }
  .track-icon { width: 36px; height: 36px; font-size: 1.1rem; }
  .track-title { font-size: 1rem; }
  .modules-grid { padding: 0 12px 12px; }
  .module-card { padding: 12px; }
  .module-desc { display: none; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .hero-stats { flex-direction: column; gap: 12px; }
  .track-meta { flex-wrap: wrap; gap: 8px; }
}