:root {
  --ow-navy: #0f2a3a;
  --ow-ink: #1c3142;
  --ow-teal: #1f6f7a;
  --ow-teal-deep: #15555d;
  --ow-foam: #e6eef1;
  --ow-panel: rgba(250, 252, 253, 0.97);
  --ow-border: rgba(15, 42, 58, 0.14);
  --ow-muted: #5a6d78;
  --ow-shadow: 0 14px 36px rgba(15, 42, 58, 0.2);
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-body: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --rail-width: min(340px, 92vw);
}

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

html,
body {
  margin: 0;
  height: 100%;
  font-family: var(--font-body);
  color: var(--ow-ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d7e8ec 0%, transparent 55%),
    linear-gradient(165deg, #eef4f6 0%, #dfe9ed 100%);
}

#map {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.nav-toggle {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 1000;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ow-border);
  border-radius: 10px;
  background: var(--ow-panel);
  box-shadow: var(--ow-shadow);
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 10px;
  cursor: pointer;
}

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

.rail {
  position: absolute;
  top: 12px;
  left: 12px;
  bottom: 12px;
  width: var(--rail-width);
  z-index: 500;
  overflow: auto;
  padding: 18px 16px 20px;
  border-radius: 16px;
  border: 1px solid var(--ow-border);
  background: var(--ow-panel);
  box-shadow: var(--ow-shadow);
  backdrop-filter: blur(8px);
}

.rail-header .brand {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ow-teal);
  font-weight: 700;
}

.rail-header h1 {
  margin: 4px 0 6px;
  font-family: var(--font-display);
  font-size: 1.55rem;
  line-height: 1.15;
  color: var(--ow-navy);
}

.subtitle {
  margin: 0 0 8px;
  font-size: 0.84rem;
  line-height: 1.4;
  color: var(--ow-muted);
}

.meta {
  margin: 0 0 12px;
  font-size: 0.72rem;
  color: var(--ow-muted);
}

.field {
  margin-bottom: 14px;
}

.field > span,
.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ow-muted);
}

select,
input[type="search"] {
  width: 100%;
  border: 1px solid var(--ow-border);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
  background: #fff;
  color: var(--ow-ink);
}

.year-slider {
  position: relative;
  height: 48px;
  margin-top: 10px;
  --year-pct-from: 0%;
  --year-pct-to: 100%;
}

.year-slider-track {
  position: absolute;
  left: 8px;
  right: 8px;
  top: 14px;
  height: 6px;
  border-radius: 999px;
  background: rgba(15, 42, 58, 0.12);
  pointer-events: none;
}

.year-slider-range {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--year-pct-from);
  right: calc(100% - var(--year-pct-to));
  border-radius: 999px;
  background: var(--ow-teal);
}

.year-thumb {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  width: 100%;
  margin: 0;
  appearance: none;
  background: transparent;
  pointer-events: none;
  height: 34px;
}

.year-thumb::-webkit-slider-runnable-track {
  height: 6px;
  background: transparent;
}

.year-thumb::-moz-range-track {
  height: 6px;
  background: transparent;
  border: none;
}

.year-thumb::-webkit-slider-thumb {
  appearance: none;
  pointer-events: auto;
  width: 18px;
  height: 18px;
  margin-top: -6px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--ow-teal);
  box-shadow: 0 1px 4px rgba(15, 42, 58, 0.35);
  cursor: pointer;
}

.year-thumb::-moz-range-thumb {
  pointer-events: auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--ow-teal);
  box-shadow: 0 1px 4px rgba(15, 42, 58, 0.35);
  cursor: pointer;
}

.year-slider.single .year-thumb-from {
  display: none;
}

.year-ticks {
  position: absolute;
  left: 8px;
  right: 8px;
  top: 30px;
  display: flex;
  justify-content: space-between;
  font-size: 0.62rem;
  color: var(--ow-muted);
  pointer-events: none;
}

.year-value {
  margin: 4px 0 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ow-teal-deep);
}

.preset-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.preset-list button {
  text-align: left;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  padding: 8px 10px;
  font: inherit;
  font-size: 0.88rem;
  color: var(--ow-ink);
  cursor: pointer;
}

.preset-list button:hover {
  background: rgba(31, 111, 122, 0.08);
}

.preset-list button.active {
  background: rgba(31, 111, 122, 0.14);
  border-color: rgba(31, 111, 122, 0.28);
  color: var(--ow-teal-deep);
  font-weight: 600;
}

.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  padding: 3px;
  border-radius: 10px;
  background: rgba(15, 42, 58, 0.06);
}

.seg button {
  border: 0;
  border-radius: 8px;
  background: transparent;
  padding: 7px 8px;
  font: inherit;
  font-size: 0.84rem;
  cursor: pointer;
  color: var(--ow-muted);
}

.seg button.active {
  background: #fff;
  color: var(--ow-navy);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(15, 42, 58, 0.12);
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 0.88rem;
  text-transform: none;
  letter-spacing: 0;
  font-weight: 500;
  color: var(--ow-ink);
}

.search-results {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  border: 1px solid var(--ow-border);
  border-radius: 8px;
  background: #fff;
  max-height: 180px;
  overflow: auto;
}

.search-results li button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 8px 10px;
  font: inherit;
  font-size: 0.84rem;
  cursor: pointer;
}

.search-results li button:hover {
  background: rgba(31, 111, 122, 0.08);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 8px 0 14px;
}

.stat {
  padding: 10px 8px;
  border-radius: 10px;
  background: rgba(15, 42, 58, 0.05);
  text-align: center;
}

.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ow-navy);
}

.stat-label {
  display: block;
  margin-top: 2px;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ow-muted);
}

.legend {
  font-size: 0.78rem;
}

.legend h2 {
  margin: 0 0 8px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ow-muted);
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 4px;
}

.legend-swatch {
  width: 16px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid rgba(15, 42, 58, 0.2);
}

.leaflet-container {
  font: inherit;
}

body.rail-collapsed .rail {
  transform: translateX(calc(-100% - 24px));
  pointer-events: none;
}

@media (max-width: 820px) {
  .nav-toggle {
    display: flex;
  }

  .rail {
    transition: transform 0.2s ease;
  }

  body:not(.rail-collapsed) .nav-toggle {
    left: calc(var(--rail-width) + 20px);
  }
}