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

:root {
  --bg-deep: #0a0b0f;
  --bg-surface: #12141a;
  --bg-elevated: #1a1d26;
  --text-primary: #f0f2f7;
  --text-secondary: #8b919e;
  --text-muted: #5c6270;
  --accent: #00d4aa;
  --accent-bright: #00f5c4;
  --accent-blue: #3b8bff;
  --accent-violet: #7c5cff;
  --gradient-hero: linear-gradient(135deg, #00d4aa 0%, #3b8bff 50%, #7c5cff 100%);
  --gradient-subtle: linear-gradient(180deg, rgba(0,212,170,0.08) 0%, transparent 60%);
  --border: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);
  --glow: 0 0 60px rgba(0,212,170,0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --font: 'DM Sans', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
  font-family: var(--font);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 20%, transparent 70%);
}

.ambient {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.ambient-1 {
  width: 600px;
  height: 600px;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,212,170,0.12);
}

.ambient-2 {
  width: 400px;
  height: 400px;
  bottom: 20%;
  right: -100px;
  background: rgba(124,92,255,0.08);
}

/* Navigation */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,11,15,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
}

.site-logo {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.language-selector {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.lang-button {
  padding: 0.375rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: var(--mono);
  text-decoration: none;
  color: var(--text-muted);
  transition: all 0.2s var(--ease-out);
}

.lang-button:hover {
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
}

.lang-button.active {
  background: rgba(0,212,170,0.12);
  color: var(--accent);
}

.category-filter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.category-button {
  padding: 0.5rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font);
  text-decoration: none;
  color: var(--text-secondary);
  transition: all 0.25s var(--ease-out);
  white-space: nowrap;
}

.category-button:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
}

.category-button.active {
  background: rgba(0,212,170,0.1);
  border-color: rgba(0,212,170,0.35);
  color: var(--accent);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: 8px;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}

.btn-primary {
  background: var(--gradient-hero);
  color: var(--bg-deep);
  box-shadow: 0 0 24px rgba(0,212,170,0.2);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 32px rgba(0,212,170,0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  border-color: var(--border-hover);
  background: rgba(255,255,255,0.03);
}

/* Main layout */
.main-container {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.main-container.narrow {
  max-width: 900px;
}

/* Stats bar */
.stats-bar {
  display: flex;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.stat-item {
  flex: 1;
  min-width: 140px;
  background: var(--bg-surface);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  transition: background 0.3s;
}

.stat-item:hover {
  background: var(--bg-elevated);
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Song cards grid */
.songs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.song-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease-out);
}

.song-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-hero);
  opacity: 0;
  transition: opacity 0.35s;
}

.song-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.song-card:hover::before {
  opacity: 1;
}

.song-card-header {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.song-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.375rem;
  line-height: 1.3;
}

.song-card-artist {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 0.625rem;
}

.song-card-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.category-badge {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  background: rgba(0,212,170,0.1);
  border: 1px solid rgba(0,212,170,0.2);
  color: var(--accent);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.song-card-lyrics {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  white-space: pre-line;
  line-height: 1.75;
  max-height: 180px;
  overflow: hidden;
  position: relative;
}

.song-card-lyrics::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--bg-surface));
}

.view-full-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--gradient-hero);
  color: var(--bg-deep);
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all 0.25s var(--ease-out);
}

.view-full-link:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(0,212,170,0.3);
}

.no-songs {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 1.0625rem;
}

/* Song detail */
.song-detail-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--glow), 0 40px 80px rgba(0,0,0,0.4);
}

.song-detail-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-hero);
}

.song-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.song-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.15;
}

.song-artist {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.song-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.song-lyrics {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  white-space: pre-line;
  line-height: 2;
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.songs-grid .reveal:nth-child(1) { transition-delay: 0ms; }
.songs-grid .reveal:nth-child(2) { transition-delay: 60ms; }
.songs-grid .reveal:nth-child(3) { transition-delay: 120ms; }
.songs-grid .reveal:nth-child(4) { transition-delay: 180ms; }
.songs-grid .reveal:nth-child(5) { transition-delay: 240ms; }
.songs-grid .reveal:nth-child(6) { transition-delay: 300ms; }
.songs-grid .reveal:nth-child(n+7) { transition-delay: 360ms; }

/* Footer */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
}

.site-footer p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

@media print {
  .site-nav, .category-filter, .language-selector, .ambient, .site-footer {
    display: none;
  }

  body, body::before {
    background: white;
    color: black;
  }

  .song-detail-card, .song-card {
    border: 1px solid #ccc;
    box-shadow: none;
  }
}

@media (max-width: 768px) {
  .nav-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .category-filter {
    justify-content: flex-start;
  }

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

  .stats-bar {
    flex-direction: column;
  }

  .stat-item {
    min-width: unset;
  }

  .song-detail-card {
    padding: 1.5rem;
  }
}