/* US Political Tracker — intro + large map single page */

:root {
  --bg: #fcfbf8;
  --text: #1d1d1b;
  --muted: #6f6d68;
  --rule: #e4e1da;
  --none: #eceae4;
  --active: #3a3936;
  --active-hover: #2a2926;
  --control-hover: #f3f0e9;
  --max-width: 1264px; /* 1200px content + 2×32px, matches homepage */
  --page-pad-x: 32px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: "Lato", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { opacity: 0.65; }

/* ---------------- Site header (aligned with page content) ---------------- */

.site-header {
  border-bottom: 1px solid var(--rule);
  background: rgba(251, 250, 247, 0.96);
  flex: 0 0 auto;
}

.nav-wrap {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-pad-x);
}

.site-nav {
  display: flex;
  gap: 42px;
  align-items: center;
  height: 72px;
}

.site-nav a {
  position: relative;
  padding: 25px 0 23px;
  color: #2e2e2e;
  font-size: 0.9rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.site-nav a:hover {
  color: #000;
  opacity: 1;
}

.site-nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: #222;
}

.page {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px var(--page-pad-x) 8px;
}

/* Intro — layer links switch the map */
.intro {
  flex: 0 0 auto;
  margin: 0 0 10px;
  max-width: 52rem;
}

.lede {
  margin: 0 0 8px;
  font-size: 0.95rem;
  font-weight: 400;
  line-height: 1.55;
  color: var(--text);
}

.layer-list {
  margin: 0;
  padding: 0 0 0 1.15rem;
  list-style: disc;
}

.layer-list li {
  margin: 0 0 4px;
  font-size: 0.92rem;
  line-height: 1.45;
  color: var(--text);
}

.layer-link {
  font-weight: 400;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  cursor: pointer;
}

.layer-link.current {
  font-weight: 700;
  text-decoration-thickness: 1.5px;
}

.layer-note {
  color: var(--muted);
  font-weight: 400;
}

/* Map panel fills remaining viewport */
.map-panel {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-bottom: 6px;
  padding: 2px 0 6px;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--rule);
  flex: 0 0 auto;
}

.layer-title {
  font-size: 0.88rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.01em;
  margin-right: 4px;
}

.toggle {
  display: inline-flex;
  border: 1px solid var(--rule);
  border-radius: 3px;
  overflow: hidden;
}

.toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  padding: 4px 10px;
  font-family: inherit;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  cursor: pointer;
}

.toggle button.active {
  background: var(--active);
  color: #faf9f6;
}

.toggle button:not(.active):hover {
  background: var(--control-hover);
}

.slider-wrap {
  flex: 1 1 260px;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 200px;
}

.frame-label {
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  min-width: 64px;
  white-space: nowrap;
}

.slider-wrap input[type=range] {
  flex: 1;
  min-width: 0;
  accent-color: var(--active);
  cursor: pointer;
}

.slider-wrap input[type=range]:disabled { opacity: 0.4; cursor: default; }

.play {
  appearance: none;
  border: 1px solid var(--rule);
  background: transparent;
  color: var(--text);
  border-radius: 3px;
  padding: 4px 10px;
  min-width: 58px;
  font-family: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.play:hover:not(:disabled) { background: var(--control-hover); }
.play[aria-pressed="true"] { background: var(--active); color: #faf9f6; border-color: var(--active); }
.play:disabled { opacity: 0.4; cursor: default; }

/* Keyboard focus */
.toggle button:focus-visible,
.play:focus-visible,
.layer-link:focus-visible,
.site-nav a:focus-visible,
.source a:focus-visible {
  outline: 2px solid var(--active);
  outline-offset: 2px;
}
.slider-wrap input[type=range]:focus-visible { outline: 2px solid var(--active); outline-offset: 4px; }
#map:focus-visible { outline: 1px solid var(--rule); }

/* Map */
.map-wrap {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  min-height: min(72vh, 820px);
}

#map {
  flex: 1 1 auto;
  width: 100%;
  min-height: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  outline: none;
}

.map-status {
  position: absolute;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  max-width: min(90%, 30rem);
  padding: 10px 16px;
  background: rgba(252, 251, 248, 0.94);
  border: 1px solid var(--rule);
  border-radius: 3px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--muted);
  text-align: center;
  pointer-events: none;
}
.map-status[hidden] { display: none; }
.map-status.error { color: #7a2e22; pointer-events: auto; }
.map-status code { font-size: 0.8rem; background: #f1eee7; padding: 0 3px; border-radius: 2px; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: center;
  margin-top: 6px;
  font-size: 0.76rem;
  line-height: 1.4;
  color: var(--muted);
  letter-spacing: 0.01em;
  flex: 0 0 auto;
}

.legend .legend-title { color: var(--text); margin-right: 2px; }
.legend .item { display: inline-flex; align-items: center; white-space: nowrap; }

.legend .swatch {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 2px;
  border: 1px solid #d4d0c7;
  margin-right: 5px;
  flex: 0 0 auto;
}

.source {
  margin: 6px 0 0;
  padding-top: 5px;
  border-top: 1px solid var(--rule);
  font-size: 0.7rem;
  line-height: 1.5;
  color: var(--muted);
  flex: 0 0 auto;
}
.source a { color: inherit; }

/* Leaflet: kill gray tile/canvas chrome */
.leaflet-container {
  background: transparent !important;
  font: inherit;
}

.leaflet-pane,
.leaflet-map-pane,
.leaflet-overlay-pane,
.leaflet-tile-pane {
  background: transparent;
}

.leaflet-control-zoom a {
  background: var(--bg) !important;
  color: var(--text) !important;
  border-color: var(--rule) !important;
  width: 26px;
  height: 26px;
  line-height: 26px;
  font-size: 13px;
}

.leaflet-bar {
  border: 1px solid var(--rule) !important;
  box-shadow: none !important;
  border-radius: 3px !important;
}

.leaflet-tooltip {
  font-family: "Lato", "Helvetica Neue", Arial, sans-serif;
  font-size: 0.8rem;
  line-height: 1.45;
  border: 1px solid var(--rule);
  border-radius: 2px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  background: #fffcf7;
  color: var(--text);
}
.leaflet-tooltip .tt-note { color: var(--muted); font-size: 0.72rem; }

@media (max-width: 700px) {
  :root { --page-pad-x: 17px; }
  .site-nav {
    height: 64px;
    gap: 28px;
  }

  .site-nav a {
    padding: 22px 0 18px;
    font-size: 0.85rem;
  }
}

@media (max-width: 640px) {
  :root { --page-pad-x: 17px; }
  .page { padding: 10px var(--page-pad-x) 10px; }
  .lede { font-size: 0.88rem; }
  .layer-list li { font-size: 0.88rem; }
  .layer-note { display: block; font-size: 0.8rem; }
  .controls { gap: 8px 10px; }
  .toggle { order: 1; }
  .play { order: 2; margin-left: auto; }
  .slider-wrap { order: 3; flex: 1 1 100%; min-width: 0; }
  .toggle button, .play { padding: 7px 12px; font-size: 0.85rem; }
  .slider-wrap input[type=range] { height: 28px; } /* larger touch target */
  .map-wrap { flex: 0 0 auto; min-height: 0; height: auto; aspect-ratio: 3 / 2; } /* lower-48 is ~1.6:1 */
  .leaflet-control-zoom { display: none; } /* pinch to zoom on touch */
  .legend { gap: 4px 10px; }
}

@media (max-width: 400px) {
  .site-nav { gap: 18px; }
  .site-nav a { font-size: 0.8rem; }
}

/* keep nav position stable across short/tall pages */
html { scrollbar-gutter: stable; }