:root {
  color-scheme: dark;
  --text: #ebf7ff;
  --muted: rgba(222, 239, 248, 0.72);
  --accent: #8fdcff;
  --danger: #ffb1a6;
  --glass-bg: rgba(10, 20, 30, 0.28);
  --glass-line: rgba(210, 235, 255, 0.16);
  --glass-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Space Grotesk", "Noto Sans JP", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(0, 144, 255, 0.22), transparent 28%),
    radial-gradient(circle at top right, rgba(0, 214, 201, 0.18), transparent 24%),
    linear-gradient(180deg, #02131f 0%, #041b2a 50%, #021018 100%);
  color: var(--text);
}

body {
  min-height: 100vh;
  min-height: var(--app-height, 100vh);
}

.viewer-wrap {
  position: relative;
  min-height: 100vh;
  min-height: var(--app-height, 100vh);
}

#cesiumContainer {
  position: absolute;
  inset: 0;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(4, 14, 22, 0.24);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: opacity 240ms ease, visibility 240ms ease;
}

.loading-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-card {
  width: min(340px, calc(100vw - 40px));
  padding: 18px 18px 16px;
  border-radius: 18px;
  background: rgba(10, 20, 30, 0.72);
  border: 1px solid rgba(210, 235, 255, 0.16);
  box-shadow: var(--glass-shadow);
}

.loading-title {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.loading-bar {
  margin-top: 12px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.loading-bar-fill {
  width: 12%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #73cfff, #b6edff);
  transition: width 180ms ease;
}

.loading-label {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--text);
}

.navigator-panel,
.legend-panel,
.control-panel,
.camera-panel {
  border-radius: 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-line);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--glass-shadow);
}

.legend-panel {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 10;
  width: 96px;
  padding: 12px 10px 10px;
}

.legend-title {
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.legend-ramp-wrap {
  position: relative;
  margin-top: 8px;
  width: 18px;
  height: 180px;
}

.legend-ramp {
  width: 18px;
  height: 180px;
  border-radius: 0;
  background-color: rgba(255, 255, 255, 0.08);
  background-repeat: no-repeat;
  background-size: 100% 100%;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.legend-sea-level {
  position: absolute;
  left: -4px;
  right: -4px;
  height: 2px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.42);
  transform: translateY(-50%);
  pointer-events: none;
}

.legend-scale {
  position: absolute;
  top: 32px;
  left: 40px;
  right: 8px;
  height: 180px;
  font-size: 0.62rem;
  color: var(--text);
}

.legend-marker {
  position: absolute;
  left: 0;
  transform: translateY(-50%);
  white-space: nowrap;
}

.legend-marker-sea-level {
  color: #ffffff;
  font-weight: 700;
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.28);
}

.navigator-panel {
  position: absolute;
  top: 24px;
  right: 24px;
  z-index: 10;
  width: 74px;
  padding: 8px 6px 10px;
}

.control-panel {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 10;
  min-width: 170px;
  width: 210px;
  height: auto;
  max-height: none;
  padding: 12px 14px;
}

.control-panel-top {
  display: block;
  top: 24px;
  left: 24px;
  right: auto;
  bottom: unset;
  height: fit-content;
  min-height: 0;
  max-height: fit-content;
  overflow: hidden;
}

.nav-icon-button,
.zoom-button {
  appearance: none;
  border: 1px solid rgba(220, 240, 255, 0.16);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  cursor: pointer;
  border-radius: 999px;
}

.nav-zoom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.nav-title,
.nav-caption {
  text-align: center;
  font-size: 0.5rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-title {
  margin-bottom: 6px;
}

.nav-caption {
  margin-top: 6px;
}

.nav-icon-button {
  position: relative;
  width: 28px;
  height: 28px;
  display: block;
  margin: 0 auto;
}

.nav-icon-button + .nav-icon-button {
  margin-top: 6px;
}

.nav-home-icon::before,
.nav-rotate-icon::before,
.nav-rotate-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.nav-home-icon::before {
  width: 14px;
  height: 12px;
  background: #8fdcff;
  clip-path: polygon(50% 0, 100% 38%, 86% 38%, 86% 100%, 60% 100%, 60% 68%, 40% 68%, 40% 100%, 14% 100%, 14% 38%, 0 38%);
}

.nav-rotate-icon::before {
  width: 14px;
  height: 14px;
  border: 2px solid #8fdcff;
  border-right-color: transparent;
  border-radius: 999px;
}

.nav-rotate-icon::after {
  width: 0;
  height: 0;
  margin-left: 6px;
  margin-top: -5px;
  border-style: solid;
  border-width: 4px 0 4px 6px;
  border-color: transparent transparent transparent #8fdcff;
}

.zoom-button {
  width: 22px;
  height: 22px;
  color: #4c8fcb;
  font: 700 0.95rem/1 "Space Grotesk", sans-serif;
}

.zoom-slider {
  writing-mode: vertical-lr;
  direction: rtl;
  width: 20px;
  height: 92px;
  background: transparent;
  accent-color: var(--accent);
}

.control-panel {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 10;
  min-width: 210px;
  padding: 12px 14px;
}

.slider-label {
  display: block;
  margin-bottom: 0;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.slider-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 4px;
  gap: 12px;
}

.slider-inline-value {
  font-size: 0.82rem;
  font-weight: 700;
}

.control-panel input[type="range"] {
  width: 100%;
  height: 16px;
  accent-color: var(--accent);
  opacity: 0.86;
}

.status {
  display: none;
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.72rem;
}

.status.error {
  color: var(--danger);
}

.camera-panel {
  display: none;
}

.camera-title {
  margin-bottom: 10px;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.camera-readout {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  color: var(--text);
}

@media (max-width: 900px) {
  .navigator-panel {
    top: 16px;
    right: 16px;
    width: 74px;
  }

  .legend-panel {
    left: 16px;
    bottom: 16px;
  }

  .control-panel {
    left: 16px;
    bottom: auto;
    width: min(220px, calc(100vw - 32px));
    min-width: 0;
    height: auto;
  }

  .control-panel-top {
    top: 16px;
    bottom: unset;
  }
}

@media (max-width: 640px) {
  .legend-panel {
    left: 12px;
    bottom: 12px;
    width: 76px;
    padding: 10px 8px 8px;
    border-radius: 14px;
  }

  .legend-title {
    font-size: 0.54rem;
    letter-spacing: 0.12em;
  }

  .legend-ramp-wrap {
    margin-top: 6px;
    width: 14px;
    height: 128px;
  }

  .legend-ramp {
    width: 14px;
    height: 128px;
  }

  .legend-scale {
    top: 26px;
    left: 30px;
    height: 128px;
    font-size: 0.52rem;
  }

  .legend-sea-level {
    left: -3px;
    right: -3px;
  }

  .control-panel {
    left: 12px;
    width: min(200px, calc(100vw - 88px));
    padding: 11px 12px;
    border-radius: 14px;
  }

  .control-panel-top {
    top: 12px;
  }

  .slider-header {
    margin-bottom: 2px;
    gap: 8px;
  }

  .slider-label {
    font-size: 0.63rem;
    letter-spacing: 0.11em;
  }

  .slider-inline-value {
    font-size: 0.82rem;
  }

  .control-panel input[type="range"] {
    height: 16px;
  }

  .navigator-panel {
    top: 12px;
    right: 12px;
    width: 66px;
    padding: 8px 5px 10px;
    border-radius: 14px;
  }

  .nav-title,
  .nav-caption {
    font-size: 0.42rem;
    letter-spacing: 0.11em;
  }

  .nav-title {
    margin-bottom: 4px;
  }

  .nav-caption {
    margin-top: 4px;
  }

  .nav-icon-button {
    width: 28px;
    height: 28px;
  }

  .nav-icon-button + .nav-icon-button {
    margin-top: 4px;
  }

  .nav-home-icon::before {
    width: 13px;
    height: 11px;
  }

  .nav-rotate-icon::before {
    width: 13px;
    height: 13px;
  }

  .nav-rotate-icon::after {
    margin-left: 5px;
    margin-top: -4px;
    border-width: 3px 0 3px 5px;
  }

  .nav-zoom {
    gap: 6px;
    margin-top: 8px;
  }

  .zoom-button {
    width: 22px;
    height: 22px;
    font-size: 0.92rem;
  }

  .zoom-slider {
    width: 20px;
    height: 90px;
  }
}