:root {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color-scheme: light;
  color: #122230;
  background: #eef2f5;
  --page-bg: #eef2f5;
  --chrome-bg: #ffffff;
  --chrome-border: #cad2da;
  --chrome-text: #122230;
  --chrome-label: #223746;
  --control-bg: #ffffff;
  --control-hover-bg: #edf6ff;
  --control-border: #9eb0bf;
  --control-text: #16344a;
  --control-button-bg: #f9fcff;
  --status-text: #304454;
  --disclaimer-text: #5b6c79;
  --disclaimer-link: #2f6f9f;
  --badge-text: #174769;
  --badge-border: #b8c9d8;
  --badge-bg: #edf4fb;
  --badge-webgl-text: #0d5f30;
  --badge-webgl-border: #8cc7a8;
  --badge-webgl-bg: #e8f7ef;
  --badge-cpu-text: #7a4b00;
  --badge-cpu-border: #e0c58d;
  --badge-cpu-bg: #fff5e6;
  --map-bg: white;
  --map-overlay-bg: rgba(251, 253, 255, 0.92);
  --map-overlay-border: rgba(97, 130, 159, 0.62);
  --map-overlay-text: #173750;
  --map-overlay-note: #365772;
  --map-scale-line-bg: #21435d;
  --map-scale-line-alt: #eef5fb;
  --map-scale-line-border: #21435d;
}

:root[data-theme='dark'] {
  color-scheme: dark;
  --page-bg: #0b1118;
  --chrome-bg: #141d27;
  --chrome-border: #304455;
  --chrome-text: #d8e8f4;
  --chrome-label: #b3cadb;
  --control-bg: #1c2a37;
  --control-hover-bg: #274055;
  --control-border: #49657a;
  --control-text: #d8e7f3;
  --control-button-bg: #1e3040;
  --status-text: #c9dceb;
  --disclaimer-text: #a2b8c8;
  --disclaimer-link: #8ac9f7;
  --badge-text: #8fc0e3;
  --badge-border: #456174;
  --badge-bg: #1f3242;
  --badge-webgl-text: #87d9ab;
  --badge-webgl-border: #356f50;
  --badge-webgl-bg: #17372a;
  --badge-cpu-text: #f2c885;
  --badge-cpu-border: #846937;
  --badge-cpu-bg: #392c18;
  --map-bg: #111820;
  --map-overlay-bg: rgba(4, 12, 18, 0.88);
  --map-overlay-border: rgba(130, 170, 210, 0.55);
  --map-overlay-text: #dceaf8;
  --map-overlay-note: #c0d4e8;
  --map-scale-line-bg: #f6fbff;
  --map-scale-line-alt: #31577a;
  --map-scale-line-border: #c1d6e9;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--page-bg);
  color: var(--chrome-text);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

.app-shell {
  height: 100vh;
  min-height: 100vh;
  height: 100dvh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

.app-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--chrome-border);
  background: var(--chrome-bg);
  color: var(--chrome-text);
  flex: 0 0 auto;
}

.app-title-group {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  flex: 1 1 auto;
  min-width: 0;
}

.app-header h1 {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.2;
  font-weight: 700;
  color: var(--chrome-text);
}

.app-location-select {
  min-width: 0;
  max-width: min(18rem, 40vw);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 1.1rem;
  line-height: 1.2;
  font-weight: 700;
  font-family: inherit;
  color: var(--chrome-text);
  background: transparent;
  border: 1px solid var(--control-border);
  border-radius: 0.35rem;
  padding: 0.18rem 1.9rem 0.18rem 0.45rem;
  appearance: auto;
  cursor: pointer;
}

.controls-menu {
  position: relative;
  margin-left: auto;
}

#controls-menu-summary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  border: 1px solid var(--control-border);
  background: var(--control-button-bg);
  color: var(--control-text);
  border-radius: 0.45rem;
  padding: 0.34rem 0.7rem;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

#controls-menu-summary::-webkit-details-marker {
  display: none;
}

.controls-menu[open] > #controls-menu-summary,
#controls-menu-summary:hover {
  background: var(--control-hover-bg);
}

.controls-menu-panel {
  position: absolute;
  top: calc(100% + 0.45rem);
  right: 0;
  z-index: 20;
  width: min(20rem, calc(100vw - 1.5rem));
  padding: 0.6rem;
  border-radius: 0.5rem;
  border: 1px solid var(--chrome-border);
  background: var(--chrome-bg);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  display: grid;
  gap: 0.5rem;
}

.control-row {
  display: grid;
  gap: 0.32rem;
}

.control-row-checkbox {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.control-row-checkbox label {
  margin-right: 0.5rem;
}

.control-row label {
  font-size: 0.9rem;
  color: var(--chrome-label);
}

.controls-menu-panel input,
.controls-menu-panel select,
.controls-menu-panel button {
  min-width: 7.5rem;
  border: 1px solid var(--control-border);
  background: var(--control-bg);
  color: var(--control-text);
  border-radius: 0.35rem;
  padding: 0.3rem 0.45rem;
  font-size: 0.84rem;
}

#colour-cycle-minutes {
  min-width: 5rem;
}

#mode-select,
#theme-select {
  padding: 0.2rem 0.25rem;
  font-size: 0.85rem;
  cursor: pointer;
}

#theme-select {
  min-width: 6.75rem;
  padding: 0.3rem 0.4rem;
}

#mode-select {
  min-width: 8.5rem;
}

#mode-select:hover,
.controls-menu-panel button:hover:enabled,
#theme-select:hover,
#controls-menu-summary:hover {
  background: var(--control-hover-bg);
}

.controls-menu-panel button {
  border: 1px solid var(--control-border);
  background: var(--control-button-bg);
  color: var(--control-text);
  border-radius: 0.35rem;
  padding: 0.34rem 0.6rem;
  font-size: 0.84rem;
  cursor: pointer;
}

.controls-menu-panel button:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.map-region {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  background: var(--map-bg);
  overflow: hidden;
}

.canvas-stack {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#boundaries,
#isochrone {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#boundaries {
  z-index: 1;
}

#isochrone {
  z-index: 2;
}

#isochrone-legend {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 4;
  min-width: 12rem;
  padding: 0.5rem 0.6rem;
  border-radius: 0.35rem;
  background: var(--map-overlay-bg);
  border: 1px solid var(--map-overlay-border);
  color: var(--map-overlay-text);
  font-size: 0.75rem;
  display: grid;
  gap: 0.28rem;
}

.legend-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.legend-swatch {
  display: inline-block;
  width: 0.9rem;
  height: 0.9rem;
  flex: 0 0 auto;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.legend-swatch-svg {
  width: 100%;
  height: 100%;
  display: block;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.legend-note {
  color: var(--map-overlay-note);
  font-size: 0.68rem;
  line-height: 1.3;
}

#distance-scale {
  position: absolute;
  left: 0.75rem;
  bottom: 0.75rem;
  z-index: 4;
  padding: 0.35rem 0.5rem;
  border-radius: 0.35rem;
  background: var(--map-overlay-bg);
  border: 1px solid var(--map-overlay-border);
  color: var(--map-overlay-text);
  font-size: 0.75rem;
  min-width: 5rem;
}

#distance-scale-line {
  height: 0.4rem;
  border-radius: 999px;
  border: 1px solid var(--map-scale-line-border);
  background-color: var(--map-scale-line-bg);
  background-image: repeating-linear-gradient(
    90deg,
    var(--map-scale-line-bg) 0 var(--scale-segment-width-px, 16px),
    var(--map-scale-line-alt) var(--scale-segment-width-px, 16px) calc(var(--scale-segment-width-px, 16px) * 2)
  );
}

#distance-scale-label {
  margin-top: 0.25rem;
  text-align: center;
}

#loading {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  min-width: 14rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.35rem;
  background: rgba(0, 0, 0, 0.72);
  color: #ffffff;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  opacity: 1;
  transition: opacity 180ms ease;
}

#loading[hidden] {
  display: none !important;
}

#loading.is-fading {
  opacity: 0;
  pointer-events: none;
}

#loading-progress {
  width: 100%;
  height: 0.35rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}

#loading-progress-bar {
  width: 0%;
  height: 100%;
  background: #7fd4ff;
  transition: width 120ms linear;
}

#info-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0.5rem 0.75rem;
  border-top: 1px solid var(--chrome-border);
  background: var(--chrome-bg);
  color: var(--chrome-text);
  flex: 0 0 auto;
}

#routing-status {
  color: var(--status-text);
  font-size: 0.85rem;
  white-space: nowrap;
}

#render-backend-badge {
  color: var(--badge-text);
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--badge-border);
  border-radius: 999px;
  background: var(--badge-bg);
}

#render-backend-badge[data-backend='webgl'] {
  color: var(--badge-webgl-text);
  border-color: var(--badge-webgl-border);
  background: var(--badge-webgl-bg);
}

#render-backend-badge[data-backend='cpu'] {
  color: var(--badge-cpu-text);
  border-color: var(--badge-cpu-border);
  background: var(--badge-cpu-bg);
}

#routing-disclaimer {
  margin-left: auto;
  color: var(--disclaimer-text);
  font-size: 0.74rem;
  line-height: 1.25;
  white-space: normal;
  text-align: right;
  max-width: 52rem;
}

#routing-disclaimer a {
  color: var(--disclaimer-link);
}

@media (max-width: 960px) {
  .controls-menu-panel {
    width: min(20rem, calc(100vw - 1.1rem));
  }

  #routing-disclaimer {
    margin-left: 0;
    text-align: left;
    max-width: none;
  }
}

@media print {
  :root,
  :root[data-theme='dark'] {
    color-scheme: light;
    --page-bg: #ffffff;
    --chrome-bg: #ffffff;
    --chrome-border: #cad2da;
    --chrome-text: #122230;
    --chrome-label: #223746;
    --control-bg: #ffffff;
    --control-hover-bg: #edf6ff;
    --control-border: #9eb0bf;
    --control-text: #16344a;
    --control-button-bg: #f9fcff;
    --status-text: #304454;
    --disclaimer-text: #5b6c79;
    --disclaimer-link: #2f6f9f;
    --badge-text: #174769;
    --badge-border: #b8c9d8;
    --badge-bg: #edf4fb;
    --badge-webgl-text: #0d5f30;
    --badge-webgl-border: #8cc7a8;
    --badge-webgl-bg: #e8f7ef;
    --badge-cpu-text: #7a4b00;
    --badge-cpu-border: #e0c58d;
    --badge-cpu-bg: #fff5e6;
    --map-bg: white;
    --map-overlay-bg: rgba(251, 253, 255, 0.92);
    --map-overlay-border: rgba(97, 130, 159, 0.62);
    --map-overlay-text: #173750;
    --map-overlay-note: #365772;
    --map-scale-line-bg: #21435d;
    --map-scale-line-alt: #ffffff;
    --map-scale-line-border: #21435d;
  }

  #loading {
    display: none !important;
  }

  #theme-select,
  #mode-select,
  #colour-cycle-minutes,
  #departure-time,
  #export-svg-button {
    color: #16344a !important;
    background: #ffffff !important;
    border-color: #9eb0bf !important;
    -webkit-text-fill-color: #16344a;
  }

  #mode-select option,
  #theme-select option {
    color: #16344a !important;
    background: #ffffff !important;
  }

  #mode-select option:checked,
  #theme-select option:checked {
    color: #16344a !important;
    background: #ffffff !important;
  }

  #distance-scale {
    min-width: 11rem;
    border-color: #9eb0bf !important;
    background: #ffffff !important;
    color: #16344a !important;
  }

  #distance-scale-line {
    border-color: #16344a !important;
    background-color: #16344a !important;
    background-image: repeating-linear-gradient(
      90deg,
      #16344a 0 var(--scale-segment-width-px, 16px),
      #ffffff var(--scale-segment-width-px, 16px) calc(var(--scale-segment-width-px, 16px) * 2)
    ) !important;
  }

  .legend-swatch-svg {
    display: block !important;
  }
}