/* Nostalgic Soundtrack Generator — Custom Styles */
:root {
  --bg-deep: #1a0a2e;
  --bg-surface: #2d1b4e;
  --bg-card: #3a2560;
  --bg-card-hover: #442d6e;
  --accent-amber: #f5a623;
  --accent-warm: #e8845c;
  --accent-glow: #ff6b9d;
  --text-primary: #f0e6ff;
  --text-secondary: #b8a0d4;
  --text-muted: #8a70a8;
  --border-subtle: #4a3570;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.3);
  --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

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

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

body {
  font-family: var(--font-main);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a { color: var(--accent-amber); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-surface) 100%);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.main-nav a:hover { color: var(--accent-amber); text-decoration: none; }

/* Hero / Generator Section */
.generator-hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 2rem;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--accent-amber), var(--accent-glow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 600px;
  margin-bottom: 2rem;
}

/* Generator Panel */
.generator-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.gen-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.gen-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
  min-width: 160px;
}

.gen-field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gen-field input,
.gen-field select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.gen-field input:focus,
.gen-field select:focus {
  border-color: var(--accent-amber);
  box-shadow: 0 0 0 3px rgba(245,166,35,0.2);
}

.gen-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23b8a0d4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2.2rem;
}

.btn-generate {
  background: linear-gradient(135deg, var(--accent-amber), var(--accent-warm));
  color: #1a0a2e;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  white-space: nowrap;
}

.btn-generate:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(245,166,35,0.4);
}

.btn-generate:active { transform: translateY(0); }

/* Milestone Chips */
.milestone-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.chip-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  align-self: center;
  margin-right: 0.25rem;
}

.chip {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.4rem 0.9rem;
  border-radius: 20px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}

.chip:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.chip.active {
  background: var(--accent-amber);
  color: #1a0a2e;
  border-color: var(--accent-amber);
  font-weight: 600;
}

/* Results Area */
.results-area {
  margin-top: 2rem;
  display: none;
}

.results-area.visible { display: block; }

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.results-title {
  font-size: 1.3rem;
  font-weight: 700;
}

.results-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.result-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn-action {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}

.btn-action:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* Song Cards Grid */
.song-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.song-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: transform 0.15s, box-shadow 0.15s;
  position: relative;
  overflow: hidden;
}

.song-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

.song-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent-amber), var(--accent-glow));
  border-radius: 4px 0 0 4px;
}

.song-rank {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-amber);
  margin-bottom: 0.3rem;
}

.song-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.song-artist {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.song-context {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.5;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.6rem;
}

.song-tag {
  display: inline-block;
  background: rgba(245,166,35,0.15);
  color: var(--accent-amber);
  font-size: 0.7rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.empty-state .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* History Panel */
.history-panel {
  margin-top: 2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: none;
}

.history-panel.visible { display: block; }

.history-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
}

.history-item:hover { background: var(--bg-card-hover); }

.history-clear {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  margin-top: 0.75rem;
  font-family: inherit;
}

/* Info Sections */
.info-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.info-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent-amber);
}

.info-section p {
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  max-width: 750px;
}

/* Scenario Walkthrough */
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.scenario-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.scenario-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--accent-warm);
}

.scenario-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Comparison / Reference Table */
.ref-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.9rem;
}

.ref-table th {
  text-align: left;
  padding: 0.6rem 1rem;
  background: var(--bg-surface);
  color: var(--accent-amber);
  font-weight: 600;
  border-bottom: 2px solid var(--border-subtle);
}

.ref-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.ref-table tr:hover td { background: var(--bg-surface); }

/* Mistakes List */
.mistakes-list {
  list-style: none;
  margin-top: 1rem;
}

.mistakes-list li {
  padding: 0.75rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 2.2rem;
}

.mistakes-list li::before {
  content: '!';
  position: absolute;
  left: 0.8rem;
  color: var(--accent-warm);
  font-weight: 700;
  font-size: 1.1rem;
}

/* Ad Slot Placeholder */
.ad-slot {
  background: var(--bg-surface);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: 1.5rem 0;
}

/* Footer */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 2rem 1.5rem;
  margin-top: 3rem;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links a:hover { color: var(--accent-amber); }

.footer-copy {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--accent-amber);
  color: var(--text-primary);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--shadow);
  z-index: 200;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; gap: 0.75rem; }
  .main-nav { gap: 1rem; }
  .gen-row { flex-direction: column; }
  .gen-field { min-width: 100%; }
  .btn-generate { width: 100%; }
  .results-header { flex-direction: column; align-items: flex-start; }
  .song-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .toast { left: 1rem; right: 1rem; bottom: 1rem; }
}

@media print {
  .site-header, .site-footer, .btn-action, .milestone-chips, .gen-row, .ad-slot { display: none !important; }
  .results-area { display: block !important; }
  body { background: #fff; color: #000; }
  .song-card { border: 1px solid #ccc; break-inside: avoid; }
}

/* Accessibility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}



/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}