:root {
  color-scheme: dark;
  --bg: #0f141a;
  --panel-bg: rgba(20, 26, 33, 0.9);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --accent: #4dc8fc;
  --accent-strong: #ff7a00;
  --risk-low: #16a34a;
  --risk-mid: #f97316;
  --risk-high: #dc2626;
  --font-stack: 'Open Sans', 'Segoe UI', sans-serif;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-stack);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-header {
  display: flex;
  align-items: flex-start;
  padding: 1.1rem clamp(1rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--panel-border);
  background: rgba(12, 16, 23, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.header-text h1 {
  margin: 0 0 0.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.header-text p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.app-main {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 360px);
  flex: 1;
  min-height: 0;
}

.map-section {
  position: relative;
  min-height: 400px;
}

.map {
  position: absolute;
  inset: 0;
  min-height: 400px;
  z-index: 0;
}

.map-legend {
  position: absolute;
  left: 1.5rem;
  bottom: 1.5rem;
  background: rgba(10, 12, 16, 0.78);
  border: 1px solid var(--panel-border);
  border-radius: 0.5rem;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  line-height: 1.4;
  min-width: 200px;
  z-index: 10;
}

.map-legend h3 {
  margin: 0 0 0.6rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.legend-section {
  display: grid;
  gap: 0.45rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.legend-symbol {
  display: inline-block;
  flex: 0 0 auto;
}

.legend-symbol.line {
  width: 2.5rem;
  height: 0.35rem;
  background: repeating-linear-gradient(
    90deg,
    rgba(255, 89, 100, 0.85) 0,
    rgba(255, 89, 100, 0.85) 8px,
    rgba(255, 89, 100, 0) 8px,
    rgba(255, 89, 100, 0) 16px
  );
  border-radius: 999px;
}

.legend-circle {
  display: inline-block;
  flex: 0 0 auto;
  border-radius: 50%;
  background: rgba(77, 200, 252, 0.65);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.legend-gradient {
  width: 100%;
  height: 0.5rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: linear-gradient(
    90deg,
    hsl(180, 85%, 62%) 0%,
    hsl(220, 80%, 58%) 40%,
    hsl(260, 78%, 54%) 70%,
    hsl(320, 80%, 52%) 100%
  );
}

.legend-scale-labels {
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-size: 0.65rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

.sidebar {
  padding: 1.2rem 1.35rem 1.5rem;
  background: linear-gradient(180deg, rgba(12, 16, 22, 0.9) 0%, rgba(12, 16, 22, 0.97) 80%);
  overflow-y: auto;
  border-left: 1px solid var(--panel-border);
}

.panel-section {
  border: 1px solid var(--panel-border);
  border-radius: 0.75rem;
  padding: 0.85rem 1rem 1.05rem;
  background: var(--panel-bg);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  margin-bottom: 1.5rem;
}

.panel-section:last-of-type {
  margin-bottom: 0;
}

.panel-section h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.field-help {
  margin: -0.5rem 0 0.85rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

input[type="search"],
select {
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-radius: 0.5rem;
  padding: 0.55rem 0.75rem;
  font-size: 0.95rem;
}

input[type="search"]::placeholder {
  color: rgba(226, 232, 240, 0.45);
}

.button {
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 0.5rem;
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.button-secondary {
  border: 1px solid var(--accent);
  background: rgba(77, 200, 252, 0.1);
  color: var(--accent);
}

.button-secondary:hover {
  background: rgba(77, 200, 252, 0.2);
}

.button-tertiary {
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.button-tertiary:hover {
  color: var(--text-primary);
  border-color: var(--panel-border);
}

.search-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.checkbox input {
  width: 1rem;
  height: 1rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.35);
}

input[type="range"]::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.35);
}

input[type="range"]::-ms-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.35);
  border-color: transparent;
  color: transparent;
}

input[type="range"]::-webkit-slider-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #a0a0a0;
  border: none;
  margin-top: -5px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}

input[type="range"]::-moz-range-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #a0a0a0;
  border: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}

input[type="range"]::-ms-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #a0a0a0;
  border: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35);
}

.dual-range {
  position: relative;
}

.dual-range .range-track {
  position: relative;
  height: 28px;
}

.dual-range .range-thumb {
  position: absolute;
  left: 0;
  width: 100%;
  background: transparent;
  pointer-events: none;
  height: 28px;
  margin: 0;
  top: 50%;
  transform: translateY(-50%);
}

.range-thumb-start {
  z-index: 1;
}

.range-thumb-end {
  z-index: 2;
}

.dual-range .range-thumb::-webkit-slider-runnable-track {
  background: transparent;
}

.dual-range .range-thumb::-moz-range-track {
  background: transparent;
}

.dual-range .range-thumb::-ms-track {
  background: transparent;
  border-color: transparent;
  color: transparent;
}

.dual-range .range-thumb::-webkit-slider-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  background: #a0a0a0;
  border: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

.dual-range .range-thumb::-moz-range-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  background: #a0a0a0;
  border: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

.dual-range .range-thumb::-ms-thumb {
  pointer-events: auto;
  position: relative;
  z-index: 2;
  background: #a0a0a0;
  border: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
}

.dual-range .range-track::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.35);
  z-index: 0;
}

.range-pair {
  gap: 0.65rem;
}

.range-inputs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.range-values {
  display: flex;
  gap: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.summary-card {
  border-radius: 0.75rem;
  border: 1px solid transparent;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.06);
  line-height: 1.5;
  min-height: 120px;
  display: grid;
  gap: 0.35rem;
}

.summary-card.highlight-low {
  border-color: rgba(22, 163, 74, 0.5);
  background: rgba(22, 163, 74, 0.12);
}

.summary-card.highlight-medium {
  border-color: rgba(249, 115, 22, 0.5);
  background: rgba(249, 115, 22, 0.12);
}

.summary-card.highlight-high {
  border-color: rgba(220, 38, 38, 0.5);
  background: rgba(220, 38, 38, 0.12);
}

.summary-metric {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
}

.summary-metric strong {
  color: var(--text-primary);
}

.summary-risk {
  font-weight: 600;
  font-size: 1.05rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: nowrap;
  white-space: nowrap;
}

.summary-risk span {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.earthquake-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.list-item {
  border: 1px solid var(--panel-border);
  border-radius: 0.65rem;
  padding: 0.75rem 0.85rem;
  background: rgba(15, 20, 26, 0.9);
  display: grid;
  gap: 0.3rem;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.list-item:hover,
.list-item.is-active {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.list-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.95rem;
  font-weight: 600;
}

.list-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.list-empty {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 0.5rem 0;
}

.badge {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.badge-tsunami {
  border-color: rgba(74, 222, 128, 0.4);
  background: rgba(74, 222, 128, 0.12);
  color: #4ade80;
}

.badge-sig {
  border-color: rgba(255, 122, 0, 0.45);
  background: rgba(255, 122, 0, 0.15);
  color: #fbbf24;
}

.app-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--panel-border);
  background: rgba(12, 16, 22, 0.85);
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-align: center;
}

@media (max-width: 960px) {
  .app-main {
    grid-template-columns: 1fr;
  }

  .sidebar {
    order: -1;
    border-left: 0;
    border-bottom: 1px solid var(--panel-border);
  }

  .map-section {
    min-height: 480px;
  }

  .map-legend {
    position: static;
    margin: 1rem auto 0;
  }
}

@media (max-width: 640px) {
  .app-header {
    position: static;
  }

  .header-text h1 {
    font-size: 1.5rem;
  }

  .app-main {
    min-height: auto;
  }

  .sidebar {
    padding: 1rem;
  }

  .panel-section {
    padding: 0.9rem 1rem 1.1rem;
  }
}

.leaflet-popup-content-wrapper,
.leaflet-popup-tip {
  background: rgba(15, 20, 26, 0.95);
  color: var(--text-primary);
  border: 1px solid var(--panel-border);
}

.leaflet-popup-content {
  font-size: 0.85rem;
  line-height: 1.4;
}

.leaflet-control-zoom a {
  background: rgba(12, 16, 22, 0.9);
  color: var(--text-primary);
  border: 1px solid var(--panel-border);
}

.leaflet-control-attribution {
  background: rgba(12, 16, 22, 0.9);
  color: var(--text-secondary);
  border-radius: 0.35rem;
  padding: 0.25rem 0.5rem;
}