:root {
  color-scheme: light;
  --bg: #0b0f14;
  --panel-bg: rgba(255, 255, 255, 0.92);
  --panel-border: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --muted: #475569;
  --primary: #2563eb;
  --primary-weak: #e0ecff;
  --danger: #dc2626;
  --radius: 12px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
  --gap: 12px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
}

#app {
  position: relative;
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: var(--bg);
}

.map-container {
  position: absolute;
  inset: 0;
}

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

.night-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.16);
  pointer-events: none;
}

.panel {
  position: absolute;
  top: 12px;
  right: 12px;
  width: min(380px, calc(100% - 24px));
  max-height: calc(100% - 24px);
  display: flex;
  flex-direction: column;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  transition: transform 160ms ease, opacity 160ms ease;
}

.panel.collapsed {
  transform: translateX(calc(100% + 12px));
  opacity: 0;
  pointer-events: none;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 12px 8px;
  border-bottom: 1px solid var(--panel-border);
}

.panel-header h1 {
  font-size: 16px;
  margin: 0;
}

.panel-body {
  padding: 12px;
  overflow: auto;
  display: grid;
  gap: 12px;
}

.panel-footer {
  padding: 8px 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.panel-meta {
  margin-top: 2px;
}

.panel-meta small {
  display: block;
  line-height: 1.35;
}

.panel-meta .precision-note {
  margin: 4px 0 0;
  font-size: 11px;
  opacity: 0.88;
}

.section {
  display: grid;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(15, 23, 42, 0.08);
}

.section:last-child {
  border-bottom: none;
}

.section h2 {
  font-size: 13px;
  margin: 0;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.field {
  display: grid;
  gap: 6px;
}

label {
  font-size: 12px;
  color: var(--text);
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="time"],
select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  font-size: 14px;
  background: white;
}

input[type="range"] {
  width: 100%;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.row.wrap {
  flex-wrap: wrap;
}

.hidden {
  display: none !important;
}

.two-col {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.btn {
  appearance: none;
  border: 1px solid var(--panel-border);
  background: white;
  padding: 7px 10px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 60ms ease;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn.small {
  padding: 5px 8px;
  font-size: 12px;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.btn-danger {
  background: #fff5f5;
  border-color: #fecaca;
  color: var(--danger);
}

.hint {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.icon-button {
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.stats-box {
  display: grid;
  gap: 4px;
  font-size: 13px;
  padding: 8px 10px;
  background: #f8fafc;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
}

#sunNote {
  color: var(--muted);
  font-size: 12px;
}

.warning-note {
  color: #b45309;
  font-size: 12px;
}

.notice {
  padding: 8px 10px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  border-radius: 8px;
  font-size: 12px;
}

.notice.hidden {
  display: none;
}

/* Fallback toast notification */
.fallback-toast {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  padding: 8px 32px 8px 12px;
  background: #fff7ed;
  border: 1px solid #fed7aa;
  color: #9a3412;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  transition: opacity 0.3s;
}
.fallback-toast.hidden {
  display: none;
}
.fallback-toast-close {
  position: absolute;
  top: 4px;
  right: 6px;
  background: none;
  border: none;
  color: #9a3412;
  font-size: 18px;
  cursor: pointer;
  line-height: 1;
  padding: 2px 4px;
}

/* Recovery toast notification */
.recovery-toast {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  padding: 10px 14px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.recovery-toast.hidden {
  display: none;
}
.recovery-toast-actions {
  display: flex;
  gap: 6px;
}
.recovery-switch {
  background: #166534;
  color: white;
  border-color: #166534;
}

/* Collapsible details/summary */
.collapsible {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 0;
}
.collapsible summary {
  padding: 8px 10px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 4px;
}
.collapsible summary::before {
  content: "\25B6";
  font-size: 10px;
  transition: transform 200ms ease;
}
.collapsible[open] summary::before {
  transform: rotate(90deg);
}
.collapsible .field {
  padding: 0 10px 10px;
}

/* Toggle pair horizontal layout */
.toggle-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

/* Loading overlay */
.loading-overlay {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 10;
  opacity: 1;
  visibility: visible;
  will-change: opacity;
  transition: opacity 220ms ease, visibility 220ms ease;
}

.loading-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid #e2e8f0;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.95s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-size: 13px;
  color: var(--text);
  white-space: nowrap;
}

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

/* Shadow computation progress indicator */
.shadow-progress {
  position: absolute;
  bottom: 56px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
  z-index: 10;
  opacity: 1;
  visibility: visible;
  will-change: opacity;
  transition: opacity 180ms ease, visibility 180ms ease;
}
.shadow-progress.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.shadow-progress-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid #e2e8f0;
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.95s linear infinite;
}
.shadow-progress-text {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

.loading-overlay.hidden .loading-spinner,
.shadow-progress.hidden .shadow-progress-spinner {
  animation-play-state: paused;
}

/* PLATEAU toggle */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: #cbd5e1;
  border-radius: 11px;
  transition: background 200ms ease;
}

.toggle-track::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 2px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: 50%;
  transition: transform 200ms ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.toggle-switch input:checked + .toggle-track {
  background: var(--primary);
}

.toggle-switch input:checked + .toggle-track::before {
  transform: translateX(18px);
}

.toggle-label {
  font-size: 13px;
  color: var(--text);
  min-width: 24px;
}

/* PLATEAU building popup */
.plateau-popup {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  font-size: 13px;
}

.plateau-popup dt {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.plateau-popup dd {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.maplibregl-popup-content {
  border-radius: 10px !important;
  padding: 12px 14px !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12) !important;
}

/* Panel open button */
.panel-open-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: var(--panel-bg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 160ms ease;
}

@media (hover: hover) {
  .btn:hover {
    background: #f8fafc;
  }

  .btn-primary:hover {
    background: #1d4ed8;
  }

  .btn-danger:hover {
    background: #fee2e2;
  }

  .recovery-switch:hover {
    background: #15803d;
  }

  .panel-open-btn:hover {
    background: #f1f5f9;
  }
}

@media (max-width: 640px) {
  .panel {
    top: 8px;
    width: calc(100% - 24px);
    right: 12px;
    left: 12px;
    max-height: 72vh;
    background: rgba(255, 255, 255, 0.88);
  }

  .panel.collapsed {
    transform: translateY(calc(100% + 12px));
  }

  .panel-body {
    padding: 10px;
    gap: 10px;
    overflow: auto;
  }

  .panel-header {
    padding: 10px 10px 8px;
  }

  .panel-footer {
    padding: 8px 10px;
  }

  .btn,
  .btn.small,
  .icon-button,
  .panel-open-btn,
  .collapsible summary {
    min-height: 44px;
  }

  .btn,
  .btn.small,
  .icon-button,
  .panel-open-btn {
    min-width: 44px;
  }

  .btn {
    padding: 10px 12px;
    font-size: 14px;
  }

  .btn.small {
    padding: 10px 12px;
    font-size: 13px;
  }

  .icon-button {
    padding: 0;
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .panel-open-btn {
    width: 44px;
    height: 44px;
    top: 8px;
    right: 8px;
  }

  .collapsible summary {
    padding: 10px 12px;
    font-size: 13px;
    line-height: 1.2;
  }

  label,
  .hint,
  .section h2,
  .stats-box,
  .notice,
  .loading-text,
  .shadow-progress-text {
    font-size: 13px;
  }

  .warning-note,
  #sunNote {
    font-size: 12px;
  }

  input[type="text"],
  input[type="number"],
  input[type="date"],
  input[type="time"],
  select {
    min-height: 44px;
    font-size: 16px;
    padding: 10px 12px;
  }

  #panel select {
    appearance: none;
    -webkit-appearance: none;
    height: 44px;
  }

  .btn:active,
  .btn.small:active,
  .icon-button:active,
  .panel-open-btn:active {
    transform: scale(0.96);
    opacity: 0.88;
  }

  .toggle-switch {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .toggle-track {
    position: relative;
    inset: auto;
    width: 44px;
    height: 24px;
    border-radius: 999px;
  }

  .toggle-track::before {
    width: 20px;
    height: 20px;
  }

  .toggle-switch input:checked + .toggle-track::before {
    transform: translateX(20px);
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .toggle-pair {
    grid-template-columns: 1fr;
  }

  .loading-overlay {
    bottom: 88px;
    left: 12px;
    transform: none;
    max-width: calc(100% - 24px);
    padding: 8px 12px;
  }

  .shadow-progress {
    bottom: 130px;
    left: 12px;
    transform: none;
    max-width: calc(100% - 24px);
  }

  .fallback-toast,
  .recovery-toast {
    top: auto;
    bottom: 34px;
    left: 12px;
    right: 12px;
    transform: none;
    width: auto;
    z-index: 3;
  }

}

@media (max-width: 640px) and (max-height: 700px) {
  .panel {
    max-height: 68vh;
  }

  .panel-body {
    gap: 8px;
    padding: 8px;
  }

  .section {
    gap: 6px;
    padding-bottom: 6px;
  }

  .loading-overlay {
    bottom: 84px;
  }

  .shadow-progress {
    bottom: 122px;
  }
}

@media (max-width: 380px) {
  .panel {
    left: 8px;
    right: 8px;
    width: calc(100% - 16px);
  }

  .panel-header {
    padding: 8px 8px 6px;
  }

  .panel-body {
    padding: 8px;
    gap: 8px;
  }

  .panel-footer,
  .disclaimer-footer {
    padding-left: 8px;
    padding-right: 8px;
  }

  .btn,
  .btn.small {
    padding-left: 10px;
    padding-right: 10px;
    font-size: 13px;
  }

  .row {
    gap: 6px;
  }
}

/* Legend */
.legend {
  position: absolute;
  bottom: 24px;
  right: 10px;
  background: rgba(255,255,255,0.9);
  padding: 10px 12px;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  font-size: 13px;
  z-index: 1;
  min-width: 140px;
}
.legend-title { font-weight: bold; margin-bottom: 8px; }
.legend-item { display: flex; align-items: center; margin-bottom: 4px; }
.legend-item:last-child { margin-bottom: 0; }
.legend-color {
  width: 20px; height: 14px;
  border-radius: 2px; margin-right: 8px;
  border: 1px solid rgba(0,0,0,0.1);
}

/* Sunrise/Sunset labels */
.sun-times {
  justify-content: space-between;
  font-size: 13px;
  color: var(--muted);
  margin-top: -2px;
}
.sun-label { white-space: nowrap; }
.sun-times .spacer { flex: 1; }

/* Disclaimer footer */
.disclaimer-footer {
  padding: 4px 10px;
  border-top: 1px solid var(--panel-border);
  color: var(--muted);
  font-size: 10px;
  line-height: 1.35;
}
.disclaimer-footer p {
  margin: 0;
}

/* Keep mobile overrides after base legend/footer declarations */
@media (max-width: 640px) {
  .legend {
    bottom: 10px;
    right: 10px;
    font-size: 12px;
    min-width: 120px;
    padding: 8px 10px;
  }

  .legend-color {
    width: 16px;
    height: 12px;
    margin-right: 6px;
  }

  .disclaimer-footer {
    font-size: 12px;
    line-height: 1.4;
    padding: 4px 10px;
  }
}