/* Vinyl Matrix Decoder — styles */
:root {
  --bg: #1a1612;
  --bg-card: #231e18;
  --bg-input: #2c261f;
  --text: #ede4d8;
  --text-muted: #a89888;
  --text-dim: #7a6c5e;
  --accent: #d4872c;
  --accent-hover: #e8a045;
  --accent-glow: rgba(212, 135, 44, 0.2);
  --success: #5cb85c;
  --danger: #c94444;
  --border: #3a332b;
  --radius: 8px;
  --radius-lg: 12px;
  --font: system-ui, -apple-system, sans-serif;
  --max-width: 800px;
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

img, svg { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
}

.logo:hover, .logo:focus-visible {
  color: var(--accent);
  text-decoration: none;
}

.logo-icon { color: var(--accent); flex-shrink: 0; }

.main-nav {
  display: flex;
  gap: 1.25rem;
}

.main-nav a {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.main-nav a:hover, .main-nav a:focus-visible {
  color: var(--text);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

/* Hero */
.hero {
  padding: 3.5rem 0 2.5rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 2rem;
}

/* Decoder panel */
.decoder-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.decoder-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.input-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.decoder-input {
  flex: 1;
  min-width: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.decoder-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.decoder-input::placeholder {
  color: var(--text-dim);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #1a1612;
}

.btn-primary:hover, .btn-primary:focus-visible {
  background: var(--accent-hover);
  box-shadow: 0 0 0 3px var(--accent-glow);
  outline: none;
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-outline:hover, .btn-outline:focus-visible {
  background: var(--accent-glow);
  outline: none;
}

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

.btn-danger:hover, .btn-danger:focus-visible {
  background: rgba(201, 68, 68, 0.1);
  outline: none;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

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

.presets-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-right: 0.25rem;
}

.preset-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0.3rem 0.75rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}

.preset-btn:hover, .preset-btn:focus-visible {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--text);
  outline: none;
}

/* Results */
.results-area {
  margin-bottom: 1rem;
}

.results-empty {
  text-align: center;
  padding: 2rem;
  color: var(--text-dim);
}

.empty-icon {
  margin: 0 auto 0.75rem;
  color: var(--text-dim);
  opacity: 0.5;
}

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  animation: fadein 0.3s ease;
}

@keyframes fadein {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.result-title {
  font-size: 1.1rem;
  font-weight: 700;
}

.result-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.badge-plant { background: rgba(92, 184, 92, 0.15); color: var(--success); }
.badge-era { background: rgba(212, 135, 44, 0.15); color: var(--accent); }
.badge-variant { background: rgba(100, 149, 237, 0.15); color: #6495ed; }

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.result-field {
  background: var(--bg-input);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}

.result-field-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.result-field-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.result-notes {
  background: var(--bg-input);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.result-notes h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.result-notes p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

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

.result-match-type {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 0.75rem;
}

.result-none {
  text-align: center;
  padding: 2rem;
}

.result-none h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.result-none p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Saved section */
.saved-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.section-header {
  margin-bottom: 1.5rem;
}

.section-header h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

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

.saved-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.saved-empty {
  color: var(--text-dim);
  font-size: 0.9rem;
  padding: 1.5rem;
  text-align: center;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--border);
}

.saved-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  animation: fadein 0.3s ease;
}

.saved-item-info {
  min-width: 0;
}

.saved-item-title {
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.saved-item-meta {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.15rem;
}

.saved-item-actions {
  display: flex;
  gap: 0.4rem;
  flex-shrink: 0;
}

.saved-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* Reference section */
.reference-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

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

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

.ref-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Guide section */
.guide-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.guide-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

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

.guide-block p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* FAQ section */
.faq-section {
  padding: 2.5rem 0;
  border-top: 1px solid var(--border);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-list dt {
  font-weight: 700;
  font-size: 0.95rem;
  padding: 1rem 0 0.35rem;
  color: var(--text);
}

.faq-list dd {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  margin: 0;
}

.faq-list dd:last-child {
  border-bottom: none;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  background: var(--bg-card);
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer-brand .logo-text {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
}

.footer-brand p {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

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

.footer-note a {
  color: var(--text-muted);
}

/* Responsive */
@media (max-width: 640px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 0.75rem 1.25rem;
    gap: 0;
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
  }

  .main-nav a:last-child {
    border-bottom: none;
  }

  .nav-toggle {
    display: flex;
  }

  .input-row {
    flex-direction: column;
  }

  .result-header {
    flex-direction: column;
    gap: 0.5rem;
  }

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

  .saved-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding: 2rem 0 1.5rem;
  }
}

@media print {
  .site-header, .decoder-panel, .presets, .result-actions, .saved-actions, .site-footer, .nav-toggle {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .result-card, .saved-item {
    border: 1px solid #ccc;
    break-inside: avoid;
  }
}


/* 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;
}