/* ===== Design tokens ===== */
:root {
  --bg:           #ffffff;
  --surface:      #f6f6f4;
  --text:         #111111;
  --text-muted:   #555555;
  --border:       #ddddd9;
  --accent:       #344e8a;
  --accent-hover: #2a3e70;

  --safe-d:  #2166ac;
  --lean-d:  #6baed6;
  --tossup:  #d9d9d9;
  --lean-r:  #ef8a62;
  --safe-r:  #b2182b;

  --sidebar-w: 340px;
  --header-h:  52px;

  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'Courier New', Courier, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:         #0f0f0f;
    --surface:    #1c1c1c;
    --text:       #ebebeb;
    --text-muted: #888888;
    --border:     #2a2a2a;
  }
}

:root[data-theme="dark"] {
  --bg:         #0f0f0f;
  --surface:    #1c1c1c;
  --text:       #ebebeb;
  --text-muted: #888888;
  --border:     #2a2a2a;
}

:root[data-theme="light"] {
  --bg:         #ffffff;
  --surface:    #f6f6f4;
  --text:       #111111;
  --text-muted: #555555;
  --border:     #ddddd9;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }

body, .site-header, .hero, .distribution-section, .sidebar,
.map-legend, .site-footer, .sd-table, .majority-ticker-label {
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: normal;
  color: var(--text);
  letter-spacing: -0.01em;
  transition: color 0.3s ease;
}
.logo:hover { text-decoration: none; }
.logo .year {
  color: #B22234;
  font-style: italic;
}
.logo-star {
  color: #3c3b6e;
  font-size: 0.8em;
  vertical-align: middle;
}

.site-nav { display: flex; gap: 1.5rem; }
.nav-link {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.8rem;
}
.nav-link.active { color: var(--text); }
.nav-link:hover { color: var(--text); text-decoration: none; }

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.2em 0.5em;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
}
.theme-toggle:hover { color: var(--text); border-color: var(--text-muted); }

/* ===== Hero ===== */
.hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0 1.75rem;
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.hero-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.hero-seats {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: normal;
  line-height: 1.2;
  text-wrap: balance;
  margin-bottom: 0.6rem;
}

.seats-num {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: bold;
  color: var(--accent);
}

.hero-sub {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.35rem;
}

.version-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--accent);
  color: #fff;
  padding: 0.15em 0.55em;
  border-radius: 2px;
  margin-right: 0.5em;
  vertical-align: middle;
  font-style: normal;
}

.hero-updated {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--text-muted);
}

/* ===== Seat Distribution Bar ===== */
.distribution-section {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: 1.6rem 0 0.75rem;
}

.distribution-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.bar-wrap {
  position: relative;
  margin-bottom: 0.5rem;
}

.majority-ticker {
  position: absolute;
  left: calc(218 / 435 * 100%);
  top: -1.6rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  z-index: 2;
}

.majority-ticker-label {
  font-size: 0.7rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  background: var(--bg);
  padding: 0 0.2em;
  line-height: 1.2;
}

.majority-ticker-arrow {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--text);
  margin-top: 1px;
}

.distribution-bar {
  position: relative;
  height: 20px;
  border-radius: 2px;
  overflow: hidden;
  display: flex;
}

.dist-band {
  height: 100%;
  transition: width 0.4s ease;
}
.dist-band.safe-d  { background: var(--safe-d); }
.dist-band.lean-d  { background: var(--lean-d); }
.dist-band.tossup  { background: var(--tossup); }
.dist-band.lean-r  { background: var(--lean-r); }
.dist-band.safe-r  { background: var(--safe-r); }

.majority-line {
  position: absolute;
  left: calc(218 / 435 * 100%);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--text);
  opacity: 0.75;
  z-index: 1;
}

.distribution-labels {
  display: flex;
  gap: 1.25rem;
  font-size: 0.8rem;
  overflow-x: auto;
  padding-bottom: 2px;
}

.dl { display: flex; align-items: center; gap: 0.35em; white-space: nowrap; }
.dl::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dl.safe-d::before  { background: var(--safe-d); }
.dl.lean-d::before  { background: var(--lean-d); }
.dl.tossup::before  { background: var(--tossup); border: 1px solid var(--border); }
.dl.lean-r::before  { background: var(--lean-r); }
.dl.safe-r::before  { background: var(--safe-r); }
.dl strong { font-variant-numeric: tabular-nums; }

/* ===== Map ===== */
.map-wrapper {
  position: relative;
  display: flex;
}

#map {
  flex: 1;
  height: 65vh;
  min-height: 400px;
  background: #e8eef4;
  z-index: 1;
}

@media (max-width: 768px) {
  #map { height: 50vh; }
}

/* Leaflet cursor */
.leaflet-interactive { cursor: pointer; }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  display: none;
  position: relative;
}

.sidebar.open {
  display: block;
}

.sidebar-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--text-muted);
  line-height: 1;
  padding: 0.2rem 0.4rem;
  z-index: 10;
}
.sidebar-close:hover { color: var(--text); }

.sidebar-content {
  padding: 1.25rem 1.25rem 2rem;
}

.sidebar-placeholder {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
}

/* Sidebar district detail */
.sd-name {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: normal;
  line-height: 1.3;
  margin: 0 2rem 0.25rem 0;
}

.sd-rating {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15em 0.6em;
  border-radius: 2px;
  margin-bottom: 1rem;
  font-weight: bold;
}
.rating-safe-d  { background: var(--safe-d);  color: #fff; }
.rating-lean-d  { background: var(--lean-d);  color: #fff; }
.rating-tossup  { background: #aaa; color: #fff; }
.rating-lean-r  { background: var(--lean-r);  color: #fff; }
.rating-safe-r  { background: var(--safe-r);  color: #fff; }

.sd-stat-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.sd-stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.5rem;
}
.sd-stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.sd-stat-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}

.sd-prob-bar-wrap {
  margin: 0.25rem 0 0.75rem;
}
.sd-prob-bar-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.sd-prob-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.3s ease;
}

.sd-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  font-variant-numeric: tabular-nums;
}
.sd-table th, .sd-table td {
  padding: 0.45rem 0.5rem;
  text-align: right;
  border-bottom: 1px solid var(--border);
}
.sd-table th:first-child, .sd-table td:first-child {
  text-align: left;
  color: var(--text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.sd-table thead th {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-bottom: 2px solid var(--border);
}
.td-dem { color: var(--safe-d); font-weight: 600; }
.td-rep { color: var(--safe-r); font-weight: 600; }
.sd-table-projected td { font-weight: 600; border-bottom: 2px solid var(--border); }

.sd-section-head {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
  margin: 1.25rem 0 0.5rem;
}


/* SHAP impact bars */
.shap-row {
  margin-bottom: 0.7rem;
}
.shap-label {
  font-size: 0.8rem;
  color: var(--text);
  margin-bottom: 0.2rem;
  display: flex;
  justify-content: space-between;
}
.shap-impact-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.shap-bar-track {
  height: 5px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.shap-bar-fill {
  height: 100%;
  border-radius: 3px;
}
.shap-pos { background: var(--safe-d); }
.shap-neg { background: var(--safe-r); }

/* Mobile: sidebar becomes bottom sheet */
@media (max-width: 768px) {
  .map-wrapper { flex-direction: column; }

  .sidebar {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border);
    max-height: 45vh;
  }
}

/* ===== Legend ===== */
.map-legend {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 0.6rem 0;
}
.legend-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.legend-gradient {
  flex: 0 0 200px;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, #b2182b, #d4d4d4, #2166ac);
}
.legend-label-r, .legend-label-d {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  margin-top: 1rem;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.footer-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin: 0 0 0.4rem;
  max-width: 72ch;
}
.footer-credits {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin: 0;
}

.footer-disclaimer {
  font-size: 0.78rem;
  font-style: italic;
  color: var(--text-muted);
  margin: 0.6rem 0 0;
  max-width: 72ch;
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
}

/* ===== Focus ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .dist-band, .sd-prob-bar-fill, .shap-bar-fill { transition: none; }
}