/* FAA AD Search - Futuristic Aviation Theme */
:root {
  --color-primary: #00d4ff;
  --color-primary-dark: #0099cc;
  --color-primary-glow: rgba(0,212,255,0.15);
  --color-secondary: #94a3b8;
  --color-accent: #00ff88;
  --color-warning: #ffb800;
  --color-danger: #ff3860;
  --color-bg: #0a0e1a;
  --color-surface: rgba(15,23,42,0.8);
  --color-surface-solid: #0f172a;
  --color-text: #e2e8f0;
  --color-text-muted: #64748b;
  --color-border: rgba(0,212,255,0.12);
  --color-border-hover: rgba(0,212,255,0.3);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;
  --max-width: 1280px;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4), 0 0 20px rgba(0,212,255,0.03);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.5), 0 0 40px rgba(0,212,255,0.05);
  --shadow-glow: 0 0 30px rgba(0,212,255,0.1);
  --color-hero-from: #0a0e1a; --color-hero-to: #0d1525;
  --color-warning-bg: rgba(255,184,0,0.08); --color-warning-border: rgba(255,184,0,0.3);
  --color-info-bg: rgba(0,212,255,0.06); --color-info-border: rgba(0,212,255,0.2);
  --color-danger-bg: rgba(255,56,96,0.08);
  --color-focus-ring: rgba(0,212,255,0.3);
  --color-footer-bg: #050810; --color-footer-text: #64748b;
  --color-footer-link: #00d4ff; --color-footer-muted: #475569;
  --color-footer-border: rgba(0,212,255,0.08);
  --badge-emergency-bg: rgba(255,56,96,0.12); --badge-recurring-bg: rgba(255,184,0,0.12);
  --badge-final-bg: rgba(0,255,136,0.1); --badge-nprm-bg: rgba(0,212,255,0.1);
  --badge-muted-bg: rgba(100,116,139,0.15); --badge-engine-bg: rgba(255,184,0,0.1);
  --badge-appliance-bg: rgba(168,139,250,0.12); --color-appliance: #a78bfa;
  --color-btn-secondary-hover: #1e293b;
  --glass-bg: rgba(15,23,42,0.6);
  --glass-border: rgba(0,212,255,0.1);
  --glass-blur: blur(20px);
}

/* Light mode */
[data-theme="light"] {
  --color-primary: #0066cc;
  --color-primary-dark: #004d99;
  --color-primary-glow: rgba(0,102,204,0.1);
  --color-secondary: #475569;
  --color-accent: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-bg: #f0f4f8;
  --color-surface: rgba(255,255,255,0.9);
  --color-surface-solid: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: rgba(0,102,204,0.1);
  --color-border-hover: rgba(0,102,204,0.25);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 30px rgba(0,102,204,0.06);
  --color-hero-from: #e0ecf8; --color-hero-to: #e8f5e9;
  --color-warning-bg: #fffbeb; --color-warning-border: #fbbf24;
  --color-info-bg: #f0f9ff; --color-info-border: #bae6fd;
  --color-danger-bg: #fef2f2;
  --color-focus-ring: rgba(0,102,204,0.15);
  --color-footer-bg: #1e293b; --color-footer-text: #cbd5e1;
  --color-footer-link: #60a5fa; --color-footer-muted: #94a3b8;
  --color-footer-border: #334155;
  --badge-emergency-bg: #fef2f2; --badge-recurring-bg: #fefce8;
  --badge-final-bg: #f0fdf4; --badge-nprm-bg: #eff6ff;
  --badge-muted-bg: #f1f5f9; --badge-engine-bg: #fefce8;
  --badge-appliance-bg: #faf5ff; --color-appliance: #7c3aed;
  --color-btn-secondary-hover: #334155;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(0,102,204,0.08);
  --glass-blur: blur(20px);
}

@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) {
  --color-primary: #0066cc;
  --color-primary-dark: #004d99;
  --color-primary-glow: rgba(0,102,204,0.1);
  --color-secondary: #475569;
  --color-accent: #059669;
  --color-warning: #d97706;
  --color-danger: #dc2626;
  --color-bg: #f0f4f8;
  --color-surface: rgba(255,255,255,0.9);
  --color-surface-solid: #ffffff;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-border: rgba(0,102,204,0.1);
  --color-border-hover: rgba(0,102,204,0.25);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 30px rgba(0,102,204,0.06);
  --color-hero-from: #e0ecf8; --color-hero-to: #e8f5e9;
  --color-warning-bg: #fffbeb; --color-warning-border: #fbbf24;
  --color-info-bg: #f0f9ff; --color-info-border: #bae6fd;
  --color-danger-bg: #fef2f2;
  --color-focus-ring: rgba(0,102,204,0.15);
  --color-footer-bg: #1e293b; --color-footer-text: #cbd5e1;
  --color-footer-link: #60a5fa; --color-footer-muted: #94a3b8;
  --color-footer-border: #334155;
  --badge-emergency-bg: #fef2f2; --badge-recurring-bg: #fefce8;
  --badge-final-bg: #f0fdf4; --badge-nprm-bg: #eff6ff;
  --badge-muted-bg: #f1f5f9; --badge-engine-bg: #fefce8;
  --badge-appliance-bg: #faf5ff; --color-appliance: #7c3aed;
  --color-btn-secondary-hover: #334155;
  --glass-bg: rgba(255,255,255,0.7);
  --glass-border: rgba(0,102,204,0.08);
  --glass-blur: blur(20px);
} }

/* Fonts: switched from Google Fonts @import to system stack on 2026-04-26.
   The @import was a render-blocking external network fetch; some Edge tracking-
   prevention configs were blocking the fonts.googleapis.com request, leaving
   pages stuck waiting for the stylesheet to finish loading. System fonts ship
   instantly and look fine — the HUD aesthetic is colors/glow, not the Inter
   typeface. If we ever re-add a custom font, do it via <link rel="stylesheet">
   in the HTML head with media="print" onload="this.media='all'" so it loads
   asynchronously instead of blocking. */

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--color-primary-dark); text-decoration: none; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--color-primary); color: #0a0e1a; padding: 8px 16px;
  z-index: 1000; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ===== HEADER - Glassmorphism Nav ===== */
.site-header {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  position: sticky; top: 0; z-index: 100;
}
.nav-container {
  max-width: var(--max-width); margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 64px;
}
.logo {
  font-size: 1.15rem; font-weight: 800; color: var(--color-primary);
  text-decoration: none; letter-spacing: -0.02em;
  text-shadow: 0 0 20px var(--color-primary-glow);
}
.nav-links { display: flex; list-style: none; gap: 8px; }
.nav-links a {
  color: var(--color-text-muted); font-size: 0.85rem; font-weight: 500;
  padding: 6px 14px; border-radius: var(--radius-sm); transition: all 0.2s;
}
.nav-links a:hover { color: var(--color-primary); background: var(--color-primary-glow); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--color-text-muted); margin: 4px 0; transition: all 0.2s; }

/* Breadcrumbs */
.breadcrumbs {
  max-width: var(--max-width); margin: 0 auto; padding: 12px 24px;
  font-size: 0.8rem; color: var(--color-text-muted);
}
.breadcrumbs ol { display: flex; list-style: none; gap: 8px; flex-wrap: wrap; }
.breadcrumbs li::after { content: '/'; margin-left: 8px; color: var(--color-border); }
.breadcrumbs li:last-child::after { content: ''; }
.breadcrumbs a { color: var(--color-text-muted); }

/* Main content */
main {
  max-width: var(--max-width); margin: 0 auto; padding: 24px;
  min-height: calc(100vh - 64px - 200px);
}

/* ===== HERO - Aviation HUD Style ===== */
.hero {
  text-align: center; padding: 80px 24px 60px;
  background: linear-gradient(160deg, var(--color-hero-from) 0%, var(--color-hero-to) 100%);
  border-radius: var(--radius); margin-bottom: 48px;
  border: 1px solid var(--color-border);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--color-primary-glow) 0%, transparent 70%);
  pointer-events: none;
}
.hero h1 {
  font-size: 2.8rem; font-weight: 800; margin-bottom: 8px;
  color: var(--color-primary); letter-spacing: -0.03em;
  position: relative;
}
.hero-tagline { font-size: 1.15rem; color: var(--color-text); margin-bottom: 8px; font-weight: 500; position: relative; }
.hero-description { color: var(--color-text-muted); margin-bottom: 24px; max-width: 600px; margin-left: auto; margin-right: auto; position: relative; }
.hero-actions { display: flex; gap: 12px; justify-content: center; margin-top: 20px; flex-wrap: wrap; position: relative; }

/* ===== BUTTONS - Glowing Edges ===== */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 22px; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 0.875rem; cursor: pointer; border: 1px solid transparent;
  text-decoration: none; transition: all 0.2s; letter-spacing: -0.01em;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--color-primary); color: #0a0e1a; border-color: var(--color-primary);
  box-shadow: 0 0 20px var(--color-primary-glow);
}
.btn-primary:hover { box-shadow: 0 0 30px rgba(0,212,255,0.25); }
.btn-secondary { background: var(--color-surface-solid); color: var(--color-text); border-color: var(--color-border); }
.btn-secondary:hover { border-color: var(--color-border-hover); }
.btn-outline {
  background: transparent; border-color: var(--color-border); color: var(--color-text-muted);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); box-shadow: 0 0 15px var(--color-primary-glow); }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; }

/* ===== SEARCH - Glowing Input ===== */
.search-form { max-width: 640px; margin: 0 auto; }
.search-input-group { display: flex; gap: 0; }
.search-input {
  flex: 1; padding: 14px 18px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm); font-size: 1rem; outline: none;
  background: var(--color-surface-solid); color: var(--color-text);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-focus-ring), 0 0 20px var(--color-primary-glow); }
.search-btn {
  padding: 14px 28px; background: var(--color-primary); color: #0a0e1a;
  border: 1px solid var(--color-primary); border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 1rem; cursor: pointer; font-weight: 600; transition: all 0.2s;
}
.search-btn:hover { box-shadow: 0 0 20px var(--color-primary-glow); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ===== STATS BAR - Glowing Cards ===== */
.stats-bar {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px; margin-bottom: 48px;
}
.stat {
  background: var(--color-surface); backdrop-filter: var(--glass-blur);
  border-radius: var(--radius); padding: 24px; text-align: center;
  border: 1px solid var(--color-border); transition: all 0.3s;
}
.stat:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-glow); }
.stat-value {
  display: block; font-size: 2.2rem; font-weight: 800; color: var(--color-primary);
  letter-spacing: -0.02em; line-height: 1;
  text-shadow: 0 0 30px var(--color-primary-glow);
}
.stat-label { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* ===== AD CARDS - Bordered Glow ===== */
.ad-list { display: flex; flex-direction: column; gap: 16px; }
.ad-card {
  background: var(--color-surface-solid); border-radius: var(--radius);
  padding: 24px; border: 1px solid rgba(0,212,255,0.25);
  border-left: 4px solid var(--color-primary); transition: all 0.2s;
  box-shadow: var(--shadow-sm);
}
.ad-card:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-glow); }
.ad-card.status-emergency { border-left-color: var(--color-danger); }
.ad-card.status-emergency:hover { box-shadow: 0 0 30px rgba(255,56,96,0.1); }
.ad-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; flex-wrap: wrap; gap: 8px; }
.ad-card-header h3 { font-size: 1.05rem; font-weight: 700; }
.ad-card-header h3 a { color: var(--color-text); transition: color 0.2s; }
.ad-card-header h3 a:hover { color: var(--color-primary); }
.ad-title { color: var(--color-text-muted); margin-bottom: 8px; font-size: 0.9rem; }
.ad-condition { font-size: 0.85rem; margin-bottom: 10px; color: var(--color-text-muted); line-height: 1.5; }
.ad-meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--color-text-muted); flex-wrap: wrap; margin-bottom: 10px; }
.match-reason { font-size: 0.8rem; color: var(--color-accent); margin-bottom: 10px; font-weight: 500; }
.ad-actions { display: flex; gap: 8px; }

/* ===== BADGES - Pill Style with Glow ===== */
.badge {
  display: inline-block; padding: 3px 10px; border-radius: 20px;
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
}
.badge-emergency { background: var(--badge-emergency-bg); color: var(--color-danger); border: 1px solid rgba(255,56,96,0.2); }
.badge-recurring { background: var(--badge-recurring-bg); color: var(--color-warning); border: 1px solid rgba(255,184,0,0.2); }
.badge-final_rule { background: var(--badge-final-bg); color: var(--color-accent); border: 1px solid rgba(0,255,136,0.15); }
.badge-nprm { background: var(--badge-nprm-bg); color: var(--color-primary); border: 1px solid rgba(0,212,255,0.15); }
.badge-superseded { background: var(--badge-muted-bg); color: var(--color-text-muted); }
.badge-success { background: var(--badge-final-bg); color: var(--color-accent); }
.badge-error { background: var(--badge-emergency-bg); color: var(--color-danger); }
.badge-aircraft { background: var(--badge-nprm-bg); color: var(--color-primary); }
.badge-engine { background: var(--badge-engine-bg); color: var(--color-warning); }
.badge-propeller { background: var(--badge-final-bg); color: var(--color-accent); }
.badge-appliance { background: var(--badge-appliance-bg); color: var(--color-appliance); }

/* Warning banner */
.warning-banner {
  background: var(--color-warning-bg); border: 1px solid var(--color-warning-border); border-radius: var(--radius);
  padding: 16px 20px; margin-bottom: 20px; font-size: 0.9rem; line-height: 1.5;
}

/* Construction banner — loud, unmissable. Static stripes (no animation)
   so the entire page doesn't thrash the GPU on pages with many other
   elements; the icons still flash to draw the eye. */
.construction-banner {
  position: relative; overflow: hidden;
  background: repeating-linear-gradient(-45deg,
    #1a1a00 0 22px, #ffb800 22px 44px, #1a1a00 44px 66px, #dc2626 66px 88px);
  border-top: 2px solid #000; border-bottom: 3px solid #000;
  color: #fff; padding: 20px 24px;
}
.construction-banner::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(0,0,0,0.62); z-index: 0;
}
.construction-banner-inner {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center; gap: 22px;
  max-width: var(--max-width); margin: 0 auto;
}
.construction-icon {
  font-size: 2.2rem; line-height: 1;
  color: #ffb800;
  animation: construction-flash 1.2s ease-in-out infinite;
  filter: drop-shadow(0 0 12px rgba(255,184,0,0.8));
}
.construction-text { display: flex; flex-direction: column; align-items: center; line-height: 1.3; text-align: center; }
.construction-title {
  display: block;
  font-size: 1.5rem; font-weight: 900;
  text-transform: uppercase; letter-spacing: 0.18em;
  color: #ffb800;
  text-shadow: 0 0 14px rgba(255,184,0,0.7), 0 0 2px #000, 0 2px 0 #000, 1px 1px 0 #000;
}
.construction-sub {
  font-size: 0.95rem; font-weight: 600; margin-top: 2px;
  color: #fef3c7;
  text-shadow: 0 1px 4px rgba(0,0,0,0.9), 0 0 8px rgba(0,0,0,0.8);
  letter-spacing: 0.02em;
}
@keyframes construction-flash {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.9); }
}
@media (max-width: 640px) {
  .construction-banner { padding: 14px 14px; }
  .construction-banner-inner { gap: 12px; }
  .construction-title { font-size: 1.05rem; letter-spacing: 0.1em; }
  .construction-sub { font-size: 0.78rem; }
  .construction-icon { font-size: 1.6rem; }
}

/* ===== DATA TABLES ===== */
.table-container { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--color-border); }
.data-table {
  width: 100%; border-collapse: collapse; font-size: 0.85rem;
  background: var(--color-surface-solid);
}
.data-table th {
  background: var(--color-bg); padding: 12px 16px; text-align: left;
  font-weight: 600; border-bottom: 1px solid var(--color-border);
  white-space: nowrap; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted);
}
.data-table td { padding: 12px 16px; border-bottom: 1px solid var(--color-border); }
.data-table tr:hover { background: var(--color-primary-glow); }
.row-error { background: var(--color-danger-bg) !important; }

/* ===== FORMS - Sleek Inputs ===== */
.form-section { margin-bottom: 28px; }
.form-section h3 { margin-bottom: 14px; font-size: 0.95rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: var(--color-primary); }
.form-hint { font-weight: 400; color: var(--color-text-muted); font-size: 0.8rem; text-transform: none; letter-spacing: 0; }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.form-group { flex: 1; min-width: 200px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.8rem; font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.form-group input, .form-group select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); font-size: 0.9rem;
  background: var(--color-surface-solid); color: var(--color-text);
  transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus {
  outline: none; border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-focus-ring), 0 0 15px var(--color-primary-glow);
}
.form-group input::placeholder { color: var(--color-text-muted); opacity: 0.6; }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; cursor: pointer; }
.form-actions { display: flex; gap: 12px; flex-wrap: wrap; padding-top: 12px; }

/* Filters */
.search-filters {
  background: var(--color-surface); border-radius: var(--radius);
  padding: 20px; margin-bottom: 20px; border: 1px solid var(--color-border);
  backdrop-filter: var(--glass-blur);
}
.filter-form .filter-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.filter-group { flex: 1; min-width: 150px; }
.filter-group label { display: block; margin-bottom: 4px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; color: var(--color-text-muted); }
.filter-group input, .filter-group select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 0.85rem;
  background: var(--color-surface-solid); color: var(--color-text);
}

/* Search results header */
.search-results-header {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 16px; font-size: 0.85rem; color: var(--color-text-muted); flex-wrap: wrap; gap: 8px;
}
.sort-options { display: flex; gap: 12px; align-items: center; }
.sort-options a { font-size: 0.8rem; }
.sort-options .active { font-weight: 700; color: var(--color-primary); }

/* Pagination */
.pagination {
  display: flex; justify-content: center; gap: 4px; margin-top: 32px; flex-wrap: wrap;
}
.page-link {
  padding: 8px 14px; border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  font-size: 0.85rem; color: var(--color-text-muted); text-decoration: none; transition: all 0.2s;
}
.page-link:hover { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-glow); }
.page-link.active { background: var(--color-primary); color: #0a0e1a; border-color: var(--color-primary); font-weight: 700; box-shadow: 0 0 15px var(--color-primary-glow); }
.page-ellipsis { padding: 8px 4px; color: var(--color-text-muted); }

/* Meta grid */
.meta-grid { display: grid; grid-template-columns: auto 1fr; gap: 6px 20px; margin: 20px 0; }
.meta-grid dt { font-weight: 600; font-size: 0.85rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.meta-grid dd { font-size: 0.9rem; color: var(--color-text); }

/* Extracted text */
.extracted-text {
  background: var(--color-surface-solid); padding: 20px; border-radius: var(--radius);
  font-family: var(--font-mono); font-size: 0.8rem; line-height: 1.7;
  white-space: pre-wrap; overflow-x: auto; max-height: 600px; overflow-y: auto;
  border: 1px solid var(--color-border); color: var(--color-text);
}

/* Source attribution */
.source-attribution {
  background: var(--color-info-bg); border: 1px solid var(--color-info-border); border-radius: var(--radius);
  padding: 20px; margin-top: 24px; font-size: 0.9rem;
}
.attribution-disclaimer { font-style: italic; color: var(--color-text-muted); margin-top: 8px; }

/* Rights badge */
.rights-badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; }
.rights-badge.rights-us_gov_public { background: var(--badge-final-bg); color: var(--color-accent); }
.rights-badge.rights-third_party_incorporated_by_reference { background: var(--badge-recurring-bg); color: var(--color-warning); }
.rights-badge.rights-mixed_rights { background: var(--badge-emergency-bg); color: var(--color-danger); }
.rights-badge.rights-unknown_review_required { background: var(--badge-muted-bg); color: var(--color-text-muted); }

/* Feature grid */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 24px; }
.feature-card {
  background: var(--color-surface); padding: 28px; border-radius: var(--radius);
  border: 1px solid var(--color-border); transition: all 0.3s;
}
.feature-card:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-glow); }
.feature-card h3 { margin-bottom: 8px; color: var(--color-primary); font-weight: 700; }

/* Grids for manufacturers, aircraft, models */
.manufacturer-grid, .model-grid, .aircraft-grid, .doc-type-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin-top: 16px;
}
.manufacturer-card, .model-card, .aircraft-card, .doc-type-card {
  background: var(--color-surface); padding: 24px; border-radius: var(--radius);
  border: 1px solid var(--color-border); text-decoration: none; color: var(--color-text);
  transition: all 0.3s;
}
.manufacturer-card:hover, .model-card:hover, .aircraft-card:hover, .doc-type-card:hover {
  border-color: var(--color-border-hover); box-shadow: var(--shadow-glow); transform: translateY(-2px); text-decoration: none;
}
.manufacturer-card h2, .doc-type-card h3 { font-size: 1.05rem; margin-bottom: 4px; font-weight: 700; }
.ad-count, .count { font-size: 0.8rem; color: var(--color-text-muted); }
.aircraft-make { display: block; font-size: 0.75rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.aircraft-model { display: block; font-size: 1.1rem; font-weight: 700; }

/* AD detail */
.ad-detail-header { margin-bottom: 20px; }
.ad-detail-header h1 { margin-bottom: 10px; font-weight: 800; letter-spacing: -0.02em; }
.ad-badges { display: flex; gap: 8px; flex-wrap: wrap; }
.ad-section { margin-top: 28px; }
.ad-section h2 { font-size: 1.1rem; margin-bottom: 12px; border-bottom: 1px solid var(--color-border); padding-bottom: 8px; font-weight: 700; color: var(--color-primary); }

/* Pricing */
.pricing-intro { text-align: center; margin-bottom: 32px; font-size: 1.1rem; }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-bottom: 40px; }
.pricing-card {
  background: var(--color-surface); padding: 32px; border-radius: var(--radius);
  border: 1px solid var(--color-border); text-align: center; transition: all 0.3s;
}
.pricing-card:hover { border-color: var(--color-border-hover); box-shadow: var(--shadow-glow); }
.pricing-card h2 { font-size: 1.3rem; margin-bottom: 8px; }
.price { font-size: 2.5rem; font-weight: 800; color: var(--color-primary); margin-bottom: 4px; text-shadow: 0 0 30px var(--color-primary-glow); }
.price span { font-size: 1rem; font-weight: 400; color: var(--color-text-muted); }
.price-note { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 16px; }
.pricing-card ul { list-style: none; text-align: left; margin: 16px 0; }
.pricing-card li { padding: 8px 0; font-size: 0.9rem; border-bottom: 1px solid var(--color-border); }
.pricing-card li:last-child { border: none; }
.pricing-card li::before { content: '+ '; color: var(--color-accent); font-weight: 700; }
.pricing-card .btn { width: 100%; justify-content: center; margin-top: 16px; }
.pricing-faq { max-width: 700px; margin: 0 auto; }
.pricing-faq dt { font-weight: 600; margin-top: 16px; }
.pricing-faq dd { color: var(--color-text-muted); }

/* Admin */
.admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--color-surface); padding: 20px; border-radius: var(--radius); border: 1px solid var(--color-border); text-align: center; }
.stat-card h3 { font-size: 0.75rem; color: var(--color-text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .stat-value { font-size: 1.8rem; font-weight: 800; color: var(--color-primary); }
.admin-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 24px; }
.admin-section { margin-bottom: 24px; }
.admin-section h2 { font-size: 1.1rem; margin-bottom: 12px; border-bottom: 1px solid var(--color-border); padding-bottom: 6px; color: var(--color-primary); }
.admin-actions { display: flex; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.ingest-status, .ingest-output { background: var(--color-surface-solid); padding: 14px; border-radius: var(--radius-sm); font-family: var(--font-mono); font-size: 0.8rem; white-space: pre-wrap; margin-top: 12px; border: 1px solid var(--color-border); }
.source-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 24px; }
.source-card { background: var(--color-surface); padding: 24px; border-radius: var(--radius); border: 1px solid var(--color-border); }
.source-disabled { opacity: 0.4; }
.source-actions { display: flex; gap: 12px; margin-top: 12px; }

/* Disclaimer section */
.disclaimer-section { background: var(--color-surface); padding: 24px; border-radius: var(--radius); margin-top: 40px; border: 1px solid var(--color-border); }
.disclaimer-section h2 { font-size: 0.9rem; margin-bottom: 8px; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.03em; }
.disclaimer-section p { font-size: 0.85rem; color: var(--color-text-muted); margin-bottom: 4px; }

/* States */
.no-results { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }
.empty-state { text-align: center; padding: 20px; color: var(--color-text-muted); }
.error-page { text-align: center; padding: 80px 20px; }
.error-page h1 { font-size: 2rem; margin-bottom: 16px; color: var(--color-primary); }
.section-footer { margin-top: 20px; text-align: center; }
.warning-text { color: var(--color-warning); font-size: 0.9rem; }
.info-text { color: var(--color-text-muted); font-size: 0.9rem; font-style: italic; }

/* Results toolbar */
.results-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin: 16px 0; padding: 12px 16px; background: var(--color-surface); border-radius: var(--radius-sm); border: 1px solid var(--color-border); }
.filter-group { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-btn { background: transparent; color: var(--color-text-muted); border: 1px solid var(--color-border); border-radius: 20px; padding: 6px 14px; font-size: 0.85rem; cursor: pointer; transition: all 0.2s; font-family: var(--font-sans); }
.filter-btn:hover { border-color: var(--color-primary); color: var(--color-text); }
.filter-btn.active { background: var(--color-primary); color: #0a0e1a; border-color: var(--color-primary); font-weight: 600; }
.filter-count { opacity: 0.7; }
.sort-group { display: flex; align-items: center; gap: 8px; }
.sort-select { background: var(--color-surface-solid); color: var(--color-text); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 6px 12px; font-size: 0.85rem; font-family: var(--font-sans); cursor: pointer; }
.sort-select:focus { outline: 2px solid var(--color-focus-ring); border-color: var(--color-primary); }
.results-summary { margin: 12px 0; }
.results-footer-note { text-align: center; color: var(--color-text-muted); font-size: 0.85rem; margin-top: 12px; }

/* Lookup */
.lookup-instructions { margin-top: 24px; }
.lookup-instructions ol { padding-left: 20px; }
.lookup-instructions li { margin-bottom: 12px; }

/* ===== FOOTER ===== */
.site-footer { background: var(--color-footer-bg); color: var(--color-footer-text); padding: 48px 24px 24px; margin-top: 80px; border-top: 1px solid var(--glass-border); }
.footer-container { max-width: var(--max-width); margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; }
.footer-section h3 { color: var(--color-primary); font-size: 0.8rem; margin-bottom: 14px; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; }
.footer-section p { font-size: 0.85rem; line-height: 1.6; }
.footer-section ul { list-style: none; }
.footer-section li { margin-bottom: 8px; }
.footer-section a { color: var(--color-footer-link); font-size: 0.85rem; transition: color 0.2s; }
.footer-section a:hover { color: var(--color-primary); }
.footer-legal { font-size: 0.75rem; color: var(--color-footer-muted); margin-top: 8px; }
.footer-bottom {
  max-width: var(--max-width); margin: 40px auto 0; padding-top: 20px;
  border-top: 1px solid var(--color-footer-border); text-align: center; font-size: 0.75rem; color: var(--color-footer-muted);
}

/* ===== THEME POLISH - HUD flourishes ===== */
/* Hero HUD grid + gradient-shimmer title */
.hero::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse at 50% 50%, rgba(0,0,0,0.9) 0%, transparent 72%);
          mask-image: radial-gradient(ellipse at 50% 50%, rgba(0,0,0,0.9) 0%, transparent 72%);
  pointer-events: none; z-index: 0;
}
.hero > * { position: relative; z-index: 1; }
.hero h1 {
  background: linear-gradient(110deg,
    var(--color-primary) 0%,
    var(--color-accent) 45%,
    var(--color-primary) 90%);
  background-size: 220% 100%;
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: hero-shimmer 9s ease-in-out infinite;
}
@keyframes hero-shimmer {
  0%, 100% { background-position: 0% 50%; }
  50%      { background-position: 100% 50%; }
}

/* Logo glow pulse */
.logo { animation: logo-pulse 3.8s ease-in-out infinite; }
@keyframes logo-pulse {
  0%, 100% { text-shadow: 0 0 20px var(--color-primary-glow); }
  50%      { text-shadow: 0 0 30px rgba(0,212,255,0.45), 0 0 70px rgba(0,212,255,0.1); }
}

/* Primary button sheen on hover */
.btn-primary { position: relative; overflow: hidden; isolation: isolate; }
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(110deg,
    transparent 30%, rgba(255,255,255,0.28) 50%, transparent 70%);
  transform: translateX(-110%); transition: transform 0.7s ease;
  pointer-events: none;
}
.btn-primary:hover::after { transform: translateX(110%); }

/* Section-header accent underline for homepage sections */
.ad-lookup-home > h2,
.keyword-search-section > h2,
.recent-ads > h2 {
  position: relative; padding-bottom: 10px; margin-bottom: 18px;
  font-weight: 700; letter-spacing: -0.01em;
}
.ad-lookup-home > h2::after,
.keyword-search-section > h2::after,
.recent-ads > h2::after {
  content: ''; position: absolute; left: 0; bottom: 0;
  width: 56px; height: 2px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  box-shadow: 0 0 10px var(--color-primary-glow);
}

/* Stat value subtle breathing glow */
.stat-value { animation: stat-breath 6s ease-in-out infinite; }
@keyframes stat-breath {
  0%, 100% { text-shadow: 0 0 30px var(--color-primary-glow); }
  50%      { text-shadow: 0 0 42px rgba(0,212,255,0.32); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex; flex-direction: column; position: absolute;
    top: 64px; left: 0; right: 0; background: var(--color-surface-solid);
    padding: 16px 24px; border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md); gap: 4px;
  }
  .hero h1 { font-size: 1.8rem; }
  .hero { padding: 48px 16px 36px; }
  .search-input-group { flex-direction: column; }
  .search-input { border-radius: var(--radius-sm); }
  .search-btn { border-radius: var(--radius-sm); }
  .form-row { flex-direction: column; }
  .filter-form .filter-row { flex-direction: column; }
  .pricing-grid { grid-template-columns: 1fr; }
  .ad-card-header { flex-direction: column; align-items: flex-start; }
}

/* Form inputs dark mode compat */
.form-group input, .form-group select, .filter-group input, .filter-group select, .search-input {
  background: var(--color-surface-solid); color: var(--color-text);
}

/* Focus visible */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; box-shadow: 0 0 15px var(--color-primary-glow); }
.search-input:focus-visible { outline: none; }

/* Card hover effects */
.manufacturer-card, .model-card, .aircraft-card, .doc-type-card, .feature-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Theme toggle */
.theme-toggle {
  background: var(--color-surface-solid); border: 1px solid var(--color-border-hover); border-radius: var(--radius-sm);
  padding: 6px 12px; cursor: pointer; font-size: 1.1rem; color: var(--color-text);
  transition: all 0.2s;
}
.theme-toggle:hover { color: var(--color-primary); border-color: var(--color-primary); box-shadow: 0 0 15px var(--color-primary-glow); }

/* Autocomplete dropdown */
.ac-dropdown {
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--color-surface-solid); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); box-shadow: var(--shadow-md); z-index: 50;
  max-height: 220px; overflow-y: auto;
}
.ac-item { padding: 10px 14px; cursor: pointer; font-size: 0.9rem; transition: background 0.15s; }
.ac-item:hover { background: var(--color-primary-glow); }
.ac-count { color: var(--color-text-muted); font-size: 0.75rem; }

/* Saved aircraft cards */
.saved-aircraft-section { margin: 20px auto; max-width: var(--max-width); padding: 0 20px; }
.saved-aircraft-section h2 { font-size: 1rem; margin-bottom: 12px; color: var(--color-primary); font-weight: 700; }
.saved-aircraft-list { display: flex; gap: 12px; flex-wrap: wrap; align-items: start; }
.saved-aircraft-card {
  display: flex; flex-direction: column; background: var(--color-surface);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 14px 18px; text-decoration: none; color: var(--color-text); min-width: 180px;
  transition: all 0.2s;
}
.saved-aircraft-card:hover { border-color: var(--color-primary); box-shadow: 0 0 15px var(--color-primary-glow); text-decoration: none; }
.saved-aircraft-card strong { color: var(--color-primary); }
.saved-aircraft-card span { font-size: 0.75rem; color: var(--color-text-muted); }
.remove-saved { background: none; border: none; color: var(--color-text-muted); cursor: pointer; font-size: 1.2rem; padding: 4px 8px; transition: color 0.2s; }
.remove-saved:hover { color: var(--color-danger); }

/* Completeness indicator */
.completeness-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }

/* Related ADs section */
.related-ads { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--color-border); }

/* AD detail actions */
.ad-detail-actions { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }

/* Home sections */
.ad-lookup-home { margin-bottom: 48px; }
.ad-lookup-home h2 { font-size: 1.3rem; font-weight: 700; margin-bottom: 8px; }
.keyword-search-section { margin-bottom: 48px; }
.keyword-search-section h2 { font-size: 1.1rem; margin-bottom: 8px; color: var(--color-text-muted); }
.recent-ads h2 { font-size: 1.2rem; font-weight: 700; margin-bottom: 16px; }
.home-lookup { max-width: var(--max-width); margin: 0 auto; padding: 20px; }
.home-lookup h2 { font-size: 1.3rem; margin-bottom: 16px; }
.quick-search { max-width: var(--max-width); margin: 24px auto; padding: 0 20px; }
.quick-search h2 { font-size: 1.1rem; margin-bottom: 12px; color: var(--color-text-muted); }

/* Changelog filter */
.changelog-filter { margin-bottom: 20px; }
.changelog-filter form { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.changelog-filter label { display: flex; flex-direction: column; gap: 4px; font-size: 0.9rem; }

/* Small phones */
@media (max-width: 480px) {
  .hero h1 { font-size: 1.5rem; }
  .hero { padding: 36px 12px 28px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .stat { padding: 16px; }
  .stat-value { font-size: 1.6rem; }
  main { padding: 12px; }
  .manufacturer-grid, .model-grid, .aircraft-grid, .doc-type-grid { grid-template-columns: 1fr; }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .admin-grid { grid-template-columns: 1fr; }
}

/* Print */
@media print {
  .site-header, .site-footer, .nav-toggle, .btn, .search-form,
  .form-actions, .admin-actions, .ad-actions, .theme-toggle,
  .related-ads, .completeness-bar, .saved-aircraft-section, .ac-dropdown,
  .ad-detail-actions .btn-outline { display: none !important; }
  body { background: white !important; color: black !important; font-size: 11pt; }
  main { max-width: 100%; padding: 0; }
  a { color: black; text-decoration: none; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  a[href^="/"]::after, a[href^="#"]::after { content: none; }
  .ad-detail { page-break-inside: avoid; }
  .ad-detail-header { border-bottom: 2px solid black; padding-bottom: 8px; margin-bottom: 12px; }
  .ad-detail-header h1 { font-size: 16pt; }
  .meta-grid { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; }
  .meta-grid dt { font-weight: bold; }
  .badge { border: 1px solid #666; padding: 1px 4px; font-size: 0.8em; border-radius: 0; }
  .ad-applicability { page-break-inside: avoid; }
  .data-table { border-collapse: collapse; width: 100%; }
  .data-table th, .data-table td { border: 1px solid #999; padding: 4px 8px; font-size: 9pt; }
  .source-attribution { border-top: 1px solid black; margin-top: 16px; padding-top: 8px; font-size: 9pt; }
  .ad-detail::after {
    content: "Compliance Record -- Aircraft N-Number: __________ S/N: __________ Date Complied: __________ Mechanic: __________ Certificate #: __________";
    display: block; margin-top: 24px; padding-top: 12px; border-top: 1px dashed #999;
    font-size: 10pt; white-space: pre-line;
  }
  .ad-detail-actions .btn-primary { display: none !important; }
}