/* ========================================================================
   PermitAtlas — Design System
   ======================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- Tokens ----------------------------------------------------------- */
:root {
  /* Color palette — light */
  --pa-bg:          #f0f4f8;
  --pa-surface:     #ffffff;
  --pa-surface-alt: #f7f9fc;
  --pa-border:      rgba(0,0,0,.08);
  --pa-border-strong: rgba(0,0,0,.14);
  --pa-ink:         #0f172a;
  --pa-ink-muted:   #475569;
  --pa-ink-faint:   #94a3b8;
  --pa-accent:      #0284c7;
  --pa-accent-hover:#0369a1;
  --pa-accent-bg:   rgba(2,132,199,.08);
  --pa-success:     #16a34a;
  --pa-warning:     #f59e0b;
  --pa-danger:      #dc2626;
  --pa-tag-bg:      #e0f2fe;
  --pa-tag-ink:     #0c4a6e;

  /* Elevation */
  --pa-shadow-sm: 0 1px 2px rgba(0,0,0,.05);
  --pa-shadow:    0 4px 24px rgba(0,0,0,.06);
  --pa-shadow-lg: 0 12px 48px rgba(0,0,0,.10);

  /* Glass */
  --pa-glass-bg:    rgba(255,255,255,.72);
  --pa-glass-blur:  16px;

  /* Radius */
  --pa-radius-sm: 8px;
  --pa-radius:    14px;
  --pa-radius-lg: 20px;
  --pa-radius-xl: 28px;

  /* Spacing */
  --pa-space-xs: 4px;
  --pa-space-sm: 8px;
  --pa-space-md: 16px;
  --pa-space-lg: 24px;
  --pa-space-xl: 40px;
  --pa-space-2xl: 64px;

  /* Typography */
  --pa-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --pa-mono: 'SF Mono', 'Fira Code', monospace;

  /* Transition */
  --pa-transition: .2s cubic-bezier(.4,0,.2,1);
  --pa-transition-slow: .35s cubic-bezier(.4,0,.2,1);

  /* Layout */
  --pa-max-width: 1200px;
  --pa-header-height: 64px;
}

/* --- Dark theme ------------------------------------------------------- */
[data-theme="dark"] {
  --pa-bg:          #0c1220;
  --pa-surface:     #162032;
  --pa-surface-alt: #1a2740;
  --pa-border:      rgba(255,255,255,.08);
  --pa-border-strong: rgba(255,255,255,.14);
  --pa-ink:         #e2e8f0;
  --pa-ink-muted:   #94a3b8;
  --pa-ink-faint:   #64748b;
  --pa-accent:      #38bdf8;
  --pa-accent-hover:#7dd3fc;
  --pa-accent-bg:   rgba(56,189,248,.1);
  --pa-tag-bg:      rgba(56,189,248,.12);
  --pa-tag-ink:     #7dd3fc;
  --pa-glass-bg:    rgba(22,32,50,.75);
  --pa-shadow-sm: 0 1px 2px rgba(0,0,0,.2);
  --pa-shadow:    0 4px 24px rgba(0,0,0,.3);
  --pa-shadow-lg: 0 12px 48px rgba(0,0,0,.4);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--pa-font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--pa-ink);
  background: var(--pa-bg);
  transition: background var(--pa-transition-slow), color var(--pa-transition-slow);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Background decoration */
body::before {
  content: '';
  position: fixed;
  top: -40%;
  right: -20%;
  width: 70vw;
  height: 70vw;
  max-width: 900px;
  max-height: 900px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(2,132,199,.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}
[data-theme="dark"] body::before {
  background: radial-gradient(circle, rgba(56,189,248,.04) 0%, transparent 70%);
}

a {
  color: var(--pa-accent);
  text-decoration: none;
  transition: color var(--pa-transition);
}
a:hover { color: var(--pa-accent-hover); }

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

/* --- Container -------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--pa-max-width);
  margin: 0 auto;
  padding: 0 var(--pa-space-lg);
}

/* --- Header ----------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--pa-header-height);
  background: var(--pa-glass-bg);
  backdrop-filter: blur(var(--pa-glass-blur));
  -webkit-backdrop-filter: blur(var(--pa-glass-blur));
  border-bottom: 1px solid var(--pa-border);
  transition: background var(--pa-transition-slow), border-color var(--pa-transition-slow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--pa-space-sm);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--pa-ink);
  letter-spacing: -.02em;
}
.site-logo span {
  background: linear-gradient(135deg, var(--pa-accent), #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--pa-space-md);
  list-style: none;
}
.nav-links a {
  color: var(--pa-ink-muted);
  font-size: .9rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--pa-radius-sm);
  transition: color var(--pa-transition), background var(--pa-transition);
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--pa-accent);
  background: var(--pa-accent-bg);
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--pa-border-strong);
  border-radius: var(--pa-radius-sm);
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--pa-ink-muted);
  font-size: 1.15rem;
  transition: all var(--pa-transition);
}
.theme-toggle:hover {
  border-color: var(--pa-accent);
  color: var(--pa-accent);
  background: var(--pa-accent-bg);
}

/* Mobile hamburger */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--pa-ink);
  font-size: 1.4rem;
  padding: 4px;
}

/* --- Hero ------------------------------------------------------------- */
.hero {
  padding: var(--pa-space-2xl) 0 var(--pa-space-xl);
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.15;
  margin-bottom: var(--pa-space-md);
}
.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--pa-accent), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .subtitle {
  font-size: 1.1rem;
  color: var(--pa-ink-muted);
  max-width: 600px;
  margin: 0 auto var(--pa-space-lg);
}

/* Stats row */
.stats-row {
  display: flex;
  justify-content: center;
  gap: var(--pa-space-xl);
  flex-wrap: wrap;
  margin-bottom: var(--pa-space-xl);
}
.stat-item {
  text-align: center;
}
.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--pa-accent);
  line-height: 1.1;
}
.stat-label {
  font-size: .82rem;
  color: var(--pa-ink-faint);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* --- Search Bar ------------------------------------------------------- */
.search-wrapper {
  max-width: 520px;
  margin: 0 auto var(--pa-space-xl);
  position: relative;
}
.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--pa-ink-faint);
  font-size: 1rem;
  pointer-events: none;
}
.search-input {
  width: 100%;
  padding: 14px 18px 14px 46px;
  border: 1px solid var(--pa-border-strong);
  border-radius: var(--pa-radius);
  background: var(--pa-surface);
  color: var(--pa-ink);
  font-family: var(--pa-font);
  font-size: 1rem;
  transition: all var(--pa-transition);
  box-shadow: var(--pa-shadow-sm);
}
.search-input::placeholder { color: var(--pa-ink-faint); }
.search-input:focus {
  outline: none;
  border-color: var(--pa-accent);
  box-shadow: 0 0 0 3px var(--pa-accent-bg), var(--pa-shadow);
}

/* --- State Group ------------------------------------------------------ */
.state-group {
  margin-bottom: var(--pa-space-xl);
}
.state-group-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--pa-ink-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--pa-space-md);
  padding-bottom: var(--pa-space-sm);
  border-bottom: 2px solid var(--pa-border);
  display: flex;
  align-items: center;
  gap: var(--pa-space-sm);
}
.state-group-title .state-count {
  font-size: .75rem;
  background: var(--pa-accent-bg);
  color: var(--pa-accent);
  padding: 2px 8px;
  border-radius: 99px;
  font-weight: 600;
}

/* --- Cards Grid ------------------------------------------------------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--pa-space-md);
}

.card {
  background: var(--pa-surface);
  border: 1px solid var(--pa-border);
  border-radius: var(--pa-radius);
  padding: var(--pa-space-lg);
  text-decoration: none;
  color: var(--pa-ink);
  transition: all var(--pa-transition);
  box-shadow: var(--pa-shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--pa-space-sm);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--pa-accent), #8b5cf6);
  opacity: 0;
  transition: opacity var(--pa-transition);
}
.card:hover {
  border-color: var(--pa-accent);
  box-shadow: var(--pa-shadow);
  transform: translateY(-2px);
}
.card:hover::before {
  opacity: 1;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
}
.card-meta {
  font-size: .82rem;
  color: var(--pa-ink-muted);
}
.card-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: auto;
}

/* --- Tags / Badges ---------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .02em;
  background: var(--pa-tag-bg);
  color: var(--pa-tag-ink);
  text-transform: capitalize;
}
.tag--success { background: rgba(22,163,74,.1); color: #16a34a; }
.tag--warning { background: rgba(245,158,11,.1); color: #b45309; }
[data-theme="dark"] .tag--warning { color: #fbbf24; }
[data-theme="dark"] .tag--success { color: #4ade80; }

/* --- Panel (detail page) ---------------------------------------------- */
.panel {
  background: var(--pa-surface);
  border: 1px solid var(--pa-border);
  border-radius: var(--pa-radius);
  padding: var(--pa-space-lg);
  margin-bottom: var(--pa-space-md);
  box-shadow: var(--pa-shadow-sm);
  transition: background var(--pa-transition-slow), border-color var(--pa-transition-slow);
}
.panel--hero {
  background: var(--pa-glass-bg);
  backdrop-filter: blur(var(--pa-glass-blur));
  -webkit-backdrop-filter: blur(var(--pa-glass-blur));
  border: 1px solid var(--pa-border);
  padding: var(--pa-space-xl);
}
.panel h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--pa-space-md);
  display: flex;
  align-items: center;
  gap: var(--pa-space-sm);
}

/* --- Breadcrumb ------------------------------------------------------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--pa-ink-faint);
  padding: var(--pa-space-md) 0;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--pa-ink-muted); }
.breadcrumb a:hover { color: var(--pa-accent); }
.breadcrumb .separator { color: var(--pa-ink-faint); user-select: none; }
.breadcrumb .current { color: var(--pa-ink); font-weight: 600; }

/* --- Detail page hero ------------------------------------------------- */
.detail-hero {
  padding: var(--pa-space-xl) 0 var(--pa-space-lg);
}
.detail-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
  margin-bottom: var(--pa-space-sm);
}
.detail-hero .detail-tags {
  display: flex;
  gap: var(--pa-space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--pa-space-md);
}

/* Metadata grid */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--pa-space-md);
}
.meta-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.meta-label {
  font-size: .75rem;
  font-weight: 600;
  color: var(--pa-ink-faint);
  text-transform: uppercase;
  letter-spacing: .06em;
}
.meta-value {
  font-size: .95rem;
  font-weight: 500;
  color: var(--pa-ink);
  word-break: break-word;
}
.meta-value a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* --- Calculator ------------------------------------------------------- */
.calc-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--pa-space-md);
}
.calc-field label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--pa-ink);
}
.calc-field input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--pa-border-strong);
  border-radius: var(--pa-radius-sm);
  background: var(--pa-surface-alt);
  color: var(--pa-ink);
  font-family: var(--pa-font);
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--pa-transition);
}
.calc-field input:focus {
  outline: none;
  border-color: var(--pa-accent);
  box-shadow: 0 0 0 3px var(--pa-accent-bg);
}

.calc-result {
  margin-top: var(--pa-space-md);
  padding: var(--pa-space-md);
  background: var(--pa-accent-bg);
  border-radius: var(--pa-radius-sm);
  border: 1px solid rgba(2,132,199,.15);
}
[data-theme="dark"] .calc-result {
  border-color: rgba(56,189,248,.15);
}
.calc-result-amount {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--pa-accent);
  line-height: 1.2;
}
.calc-result-label {
  font-size: .8rem;
  color: var(--pa-ink-muted);
  font-weight: 500;
}
.calc-params {
  display: flex;
  flex-wrap: wrap;
  gap: var(--pa-space-sm);
  margin-top: var(--pa-space-md);
  font-size: .82rem;
  color: var(--pa-ink-muted);
}
.calc-param {
  background: var(--pa-surface-alt);
  padding: 4px 10px;
  border-radius: var(--pa-radius-sm);
  border: 1px solid var(--pa-border);
}

/* --- Notes / Quotes --------------------------------------------------- */
.notes-text {
  font-size: .95rem;
  line-height: 1.7;
  color: var(--pa-ink);
}

.quote-item {
  background: var(--pa-surface-alt);
  border-left: 3px solid var(--pa-accent);
  padding: var(--pa-space-md);
  border-radius: 0 var(--pa-radius-sm) var(--pa-radius-sm) 0;
  margin-bottom: var(--pa-space-sm);
  font-size: .9rem;
  color: var(--pa-ink-muted);
  font-style: italic;
  line-height: 1.6;
}

.surcharge-list {
  list-style: none;
}
.surcharge-item {
  padding: var(--pa-space-sm) 0;
  border-bottom: 1px solid var(--pa-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--pa-space-md);
  font-size: .92rem;
}
.surcharge-item:last-child { border-bottom: none; }
.surcharge-name { font-weight: 600; color: var(--pa-ink); }
.surcharge-value { color: var(--pa-ink-muted); text-align: right; flex-shrink: 0; }

/* No data fallback */
.no-data {
  color: var(--pa-ink-faint);
  font-size: .9rem;
  font-style: italic;
}

/* --- Footer ----------------------------------------------------------- */
.site-footer {
  margin-top: var(--pa-space-2xl);
  padding: var(--pa-space-xl) 0;
  border-top: 1px solid var(--pa-border);
  text-align: center;
  color: var(--pa-ink-faint);
  font-size: .82rem;
}
.site-footer a { color: var(--pa-ink-muted); }
.site-footer a:hover { color: var(--pa-accent); }
.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--pa-space-md);
  margin-bottom: var(--pa-space-sm);
  flex-wrap: wrap;
}
.footer-disclaimer {
  max-width: 600px;
  margin: var(--pa-space-sm) auto 0;
  line-height: 1.5;
}

/* --- No results ------------------------------------------------------- */
.no-results {
  text-align: center;
  padding: var(--pa-space-2xl) var(--pa-space-lg);
  color: var(--pa-ink-faint);
  display: none;
}
.no-results.visible { display: block; }
.no-results-icon {
  font-size: 3rem;
  margin-bottom: var(--pa-space-md);
}

/* --- 404 -------------------------------------------------------------- */
.page-404 {
  text-align: center;
  padding: var(--pa-space-2xl) var(--pa-space-lg);
}
.page-404 h1 {
  font-size: 6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--pa-accent), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.page-404 p {
  font-size: 1.1rem;
  color: var(--pa-ink-muted);
  margin-bottom: var(--pa-space-lg);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--pa-space-sm);
  padding: 12px 28px;
  background: var(--pa-accent);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  border-radius: var(--pa-radius);
  border: none;
  cursor: pointer;
  transition: all var(--pa-transition);
  text-decoration: none;
}
.btn-primary:hover {
  background: var(--pa-accent-hover);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--pa-shadow);
}

/* --- Responsive ------------------------------------------------------- */
@media (max-width: 768px) {
  .container { padding: 0 var(--pa-space-md); }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--pa-header-height);
    left: 0;
    right: 0;
    background: var(--pa-surface);
    border-bottom: 1px solid var(--pa-border);
    flex-direction: column;
    padding: var(--pa-space-md);
    gap: var(--pa-space-xs);
    box-shadow: var(--pa-shadow-lg);
  }
  .nav-links.open { display: flex; }
  .nav-links a { width: 100%; padding: 12px; }

  .mobile-toggle { display: flex; }

  .hero { padding: var(--pa-space-xl) 0 var(--pa-space-lg); }
  .hero h1 { font-size: 1.8rem; }

  .stats-row { gap: var(--pa-space-lg); }
  .stat-value { font-size: 1.5rem; }

  .cards-grid { grid-template-columns: 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: 1fr; }

  .panel--hero { padding: var(--pa-space-lg); }
  .detail-hero h1 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .header-inner { padding: 0 var(--pa-space-sm); }
  .site-logo { font-size: 1rem; }
  .hero h1 { font-size: 1.5rem; }
}

/* --- Print ------------------------------------------------------------ */
@media print {
  .site-header, .site-footer, .theme-toggle, .mobile-toggle, .search-wrapper { display: none !important; }
  body { background: #fff; color: #000; }
  .panel { box-shadow: none; border: 1px solid #ccc; }
  a { color: #000; text-decoration: underline; }
  .card { break-inside: avoid; }
}

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