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

:root {
  --bg: #050505;
  --surface: #0a0a0a;
  --border: #1a1a1a;
  --text: #e8e8e8;
  --text-dim: #555;
  --text-muted: #444;
  --gold: #c8a44e;
  --gold-dim: rgba(200,164,78,0.15);
  --gold-glow: rgba(200,164,78,0.08);
  --green: #39FF14;
  --green-dim: rgba(57,255,20,0.12);
  --font: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif Display', Georgia, serif;
  --radius: 12px;
  --radius-sm: 8px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ─── Layout ─── */
main {
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

/* ─── Top Bar ─── */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: 480px;
  margin: 0 auto;
  background: linear-gradient(180deg, rgba(5,5,5,0.98) 60%, transparent);
}

.logo-glow {
  width: 28px;
  height: 28px;
  opacity: 0.7;
  filter: drop-shadow(0 0 8px rgba(200,164,78,0.3));
  animation: breathe 6s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.08); }
}

.wordmark {
  font-size: 13px;
  font-weight: 300;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--text);
  opacity: 0.6;
}

.ai-orb {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
}

.ai-orb::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--gold), transparent) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.3s;
}

.ai-orb:hover::after,
.ai-orb:focus::after { opacity: 1; }
.ai-orb:hover { border-color: var(--gold); }

/* ─── Hero ─── */
.hero {
  text-align: center;
  padding: 48px 0 32px;
  position: relative;
}

.hero-enso {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 180px;
  height: 180px;
  color: var(--gold);
  animation: spin 60s linear infinite;
}

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.tagline {
  font-size: 28px;
  font-weight: 200;
  letter-spacing: -0.5px;
  line-height: 1.2;
  position: relative;
}

.koan {
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  color: var(--text-dim);
  margin-top: 20px;
  min-height: 20px;
  transition: opacity 0.8s;
  position: relative;
}

/* ─── Search ─── */
.search-section { margin-bottom: 32px; }

.search-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 16px;
  transition: all 0.3s;
}

.search-wrap:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--gold-dim), 0 0 20px var(--gold-glow);
}

.search-icon {
  flex-shrink: 0;
  color: var(--text-dim);
  transition: color 0.3s;
}

.search-wrap:focus-within .search-icon { color: var(--gold); }

#searchInput {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  font-weight: 300;
}

#searchInput::placeholder { color: var(--text-muted); }

/* ─── Section Titles ─── */
.section-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}

/* ─── Mood Grid ─── */
.mood-section { margin-bottom: 28px; }

.mood-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mood-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.25s;
  -webkit-tap-highlight-color: transparent;
}

.mood-btn svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.mood-btn:active { transform: scale(0.97); }

.mood-btn.active {
  border-color: var(--gold);
  background: var(--gold-dim);
}

/* Per-mood accent colors */
.mood-btn[data-mood="energetic"] { --accent: #ff6b35; }
.mood-btn[data-mood="energetic"].active { border-color: #ff6b35; background: rgba(255,107,53,0.12); }
.mood-btn[data-mood="energetic"].active svg { color: #ff6b35; }

.mood-btn[data-mood="nostalgic"] { --accent: #8b7355; }
.mood-btn[data-mood="nostalgic"].active { border-color: #8b7355; background: rgba(139,115,85,0.12); }
.mood-btn[data-mood="nostalgic"].active svg { color: #8b7355; }

.mood-btn[data-mood="romantic"] { --accent: #e0526e; }
.mood-btn[data-mood="romantic"].active { border-color: #e0526e; background: rgba(224,82,110,0.12); }
.mood-btn[data-mood="romantic"].active svg { color: #e0526e; }

.mood-btn[data-mood="melancholic"] { --accent: #6c5b7b; }
.mood-btn[data-mood="melancholic"].active { border-color: #6c5b7b; background: rgba(108,91,123,0.12); }
.mood-btn[data-mood="melancholic"].active svg { color: #6c5b7b; }

.mood-btn[data-mood="happy"] { --accent: #d4a853; }
.mood-btn[data-mood="happy"].active { border-color: #d4a853; background: rgba(212,168,83,0.12); }
.mood-btn[data-mood="happy"].active svg { color: #d4a853; }

.mood-btn[data-mood="zen"] { --accent: #5ba3b5; }
.mood-btn[data-mood="zen"].active { border-color: #5ba3b5; background: rgba(91,163,181,0.12); }
.mood-btn[data-mood="zen"].active svg { color: #5ba3b5; }

/* ─── Genre Chips ─── */
.genres-section { margin-bottom: 24px; display: none; }
.genres-section.visible { display: block; }

.chip-scroll {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.chip-scroll::-webkit-scrollbar { display: none; }

.chip {
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 400;
  cursor: pointer;
  transition: all 0.25s;
  -webkit-tap-highlight-color: transparent;
}

.chip:active { transform: scale(0.95); }
.chip.active {
  border-color: var(--gold);
  background: var(--gold-dim);
  color: var(--gold);
}

/* ─── Results ─── */
#results { margin-top: 8px; }

.song-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  margin-bottom: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.25s;
  animation: cardIn 0.4s ease both;
  -webkit-tap-highlight-color: transparent;
}

.song-card:active { transform: scale(0.98); }

@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.song-card-mood {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  border: 1px solid var(--border);
}

.song-card-body { flex: 1; min-width: 0; }

.song-card-title {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.song-card-artist {
  font-size: 12px;
  color: var(--text-dim);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.song-card-meta {
  font-size: 10px;
  color: var(--gold);
  margin-top: 4px;
  letter-spacing: 1px;
}

.song-card-action {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.2s;
}

.song-card-action:hover { border-color: var(--gold); color: var(--gold); }

/* Empty & loading states */
.empty-state {
  text-align: center;
  padding: 40px 20px;
}

.empty-state p {
  font-size: 14px;
  color: var(--text-dim);
  line-height: 1.7;
}

.spinner-wrap {
  display: flex;
  justify-content: center;
  padding: 40px;
}

.enso-spinner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  border-top-color: var(--gold);
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 0 4px;
}

.section-header h3 {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.section-header span {
  font-size: 11px;
  color: var(--text-muted);
}

/* ─── Footer ─── */
.page-footer {
  text-align: center;
  padding: 40px 0 20px;
  border-top: 1px solid var(--border);
  margin-top: 24px;
}

.footer-text {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.footer-link {
  font-size: 12px;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-link:hover { color: var(--gold); }

.footer-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-muted);
}

/* ─── AI Panel ─── */
.ai-panel {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  width: 100%;
  max-width: 480px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 20px 20px 0 0;
  z-index: 20;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 -10px 40px rgba(0,0,0,0.5);
}

.ai-panel.open { transform: translateX(-50%) translateY(0); }

.ai-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}

.ai-panel-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
}

.ai-panel-close {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

.ai-panel-close:hover { border-color: var(--text-dim); }

.ai-panel-body {
  padding: 24px 20px 32px;
}

.premium-lock {
  text-align: center;
  padding: 20px 0;
}

.premium-lock svg {
  color: var(--gold);
  margin-bottom: 12px;
  opacity: 0.6;
}

.premium-lock h3 {
  font-size: 18px;
  font-weight: 300;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.premium-lock p {
  font-size: 13px;
  color: var(--text-dim);
  max-width: 280px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.premium-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 25px;
  border: 1px solid var(--gold);
  background: transparent;
  color: var(--gold);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s;
}

.premium-btn:hover {
  background: var(--gold-dim);
  box-shadow: 0 0 20px var(--gold-glow);
}

/* ─── Toast ─── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 13px;
  color: var(--text);
  z-index: 30;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  max-width: 400px;
  text-align: center;
}

.toast.show { transform: translateX(-50%) translateY(0); }