:root {
  color-scheme: light;
  font-family: "Yu Gothic UI", "Yu Gothic", "Hiragino Sans", system-ui, sans-serif;
  --forest-950: #14251f;
  --forest-800: #28483c;
  --forest-650: #3c6654;
  --forest-100: #dfe9e3;
  --paper: rgba(252, 251, 246, 0.94);
  --ink: #20312b;
  --muted: #65726c;
  --line: rgba(32, 56, 47, 0.16);
  --contour: #8b5b34;
  --shadow: 0 14px 38px rgba(20, 37, 31, 0.2);
}

* {
  box-sizing: border-box;
}

html,
body,
.app-shell,
#map {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  color: var(--ink);
  background: var(--forest-100);
}

button,
input {
  font: inherit;
}

.app-shell {
  position: relative;
}

#map {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: #d9e2dc;
}

.app-title,
.layer-panel {
  position: absolute;
  z-index: 1000;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: var(--paper);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.app-title {
  top: max(18px, env(safe-area-inset-top));
  left: max(18px, env(safe-area-inset-left));
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 15px 0 12px;
  border-radius: 14px;
  color: var(--forest-950);
  font-size: 18px;
  font-weight: 750;
  letter-spacing: 0.025em;
}

.app-title-mark {
  width: 20px;
  height: 20px;
  border: solid var(--forest-650);
  border-width: 0 0 2px 2px;
  transform: rotate(135deg) skew(-8deg, -8deg);
}

.app-version {
  margin-left: 2px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.layer-panel {
  top: max(18px, env(safe-area-inset-top));
  right: max(18px, env(safe-area-inset-right));
  width: min(360px, calc(100vw - 36px));
  padding: 18px;
  border-radius: 18px;
}

.layer-panel-heading,
.setting-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.eyebrow {
  margin: 0 0 2px;
  color: var(--forest-650);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0;
  font-size: 20px;
  line-height: 1.2;
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 5px 9px;
  border: 0;
  border-radius: 10px;
  color: var(--ink);
  font-weight: 700;
  background: transparent;
  cursor: pointer;
}

.switch-track {
  position: relative;
  width: 38px;
  height: 22px;
  border-radius: 999px;
  background: #aeb9b3;
  transition: background-color 160ms ease;
}

.switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.28);
  transition: transform 160ms ease;
}

.switch[aria-checked="true"] .switch-track {
  background: var(--forest-650);
}

.switch[aria-checked="true"] .switch-thumb {
  transform: translateX(16px);
}

.contour-options {
  display: grid;
  gap: 16px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.contour-options[hidden] {
  display: none;
}

.setting-block {
  display: grid;
  gap: 9px;
}

.setting-label,
output {
  font-size: 12px;
  font-weight: 750;
}

.setting-note {
  color: var(--muted);
  font-size: 11px;
}

.segmented-control {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(32, 56, 47, 0.055);
}

.segmented-control button {
  min-width: 0;
  min-height: 32px;
  padding: 4px 3px;
  border: 0;
  border-radius: 7px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  background: transparent;
  cursor: pointer;
}

.segmented-control button[aria-pressed="true"] {
  color: #fff;
  background: var(--forest-800);
  box-shadow: 0 2px 8px rgba(20, 37, 31, 0.2);
}

input[type="range"] {
  width: 100%;
  height: 20px;
  margin: 0;
  accent-color: var(--contour);
  cursor: pointer;
}

.map-status {
  min-height: 16px;
  margin: 15px 0 0;
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  line-height: 1.45;
}

button:focus-visible,
input:focus-visible {
  outline: 3px solid rgba(44, 107, 80, 0.32);
  outline-offset: 2px;
}

.leaflet-control-zoom {
  overflow: hidden;
  border: 0 !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow) !important;
}

.leaflet-control-zoom a {
  color: var(--forest-950) !important;
  background: var(--paper) !important;
}

.leaflet-control-attribution {
  max-width: min(72vw, 780px);
  padding: 3px 7px !important;
  color: #40504a;
  line-height: 1.35;
  background: rgba(252, 251, 246, 0.9) !important;
}

.leaflet-control-attribution a {
  color: #275b46;
}

@media (max-width: 720px) {
  .app-title {
    top: max(10px, env(safe-area-inset-top));
    left: max(10px, env(safe-area-inset-left));
    min-height: 40px;
    padding-inline: 10px 12px;
    border-radius: 12px;
    font-size: 16px;
  }

  .layer-panel {
    top: auto;
    right: max(10px, env(safe-area-inset-right));
    bottom: calc(42px + env(safe-area-inset-bottom));
    left: max(10px, env(safe-area-inset-left));
    width: auto;
    padding: 14px;
    border-radius: 16px;
  }

  .contour-options {
    grid-template-columns: 1.35fr 1fr;
    gap: 12px;
    margin-top: 12px;
    padding-top: 12px;
  }

  .map-status {
    margin-top: 11px;
    padding-top: 9px;
  }

  .setting-note {
    display: none;
  }

  .leaflet-bottom.leaflet-left {
    bottom: 178px;
  }

  .leaflet-control-attribution {
    max-width: 100vw;
    font-size: 9px;
  }
}

@media (max-width: 470px) {
  .contour-options {
    grid-template-columns: 1fr;
  }

  .leaflet-bottom.leaflet-left {
    bottom: 224px;
  }

  .segmented-control button {
    font-size: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}