:root {
  --bg-dark: #071021;
  --panel-dark: #0b1c45;
  --accent: #4a8bff;
  --light: #cdd9ff;
  --earthquake: #ff9800;
  --impact: #ff3838;
  --tsunami: #005bff;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--bg-dark);
  color: white;
}

header {
  text-align: center;
  padding: 1rem;
  background: var(--panel-dark);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
}

header h1 {
  color: var(--accent);
  margin: 0;
  font-size: 1.5rem;
}

header p {
  color: var(--light);
  font-size: 0.9rem;
  margin-top: 4px;
}

.layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - 120px);
}

.sidebar {
  background: var(--panel-dark);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  overflow-y: auto;
  border-right: 2px solid #14285f;
  scrollbar-width: thin;
  scrollbar-color: #4a8bff #0b1c45;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: var(--accent);
  border-radius: 4px;
}

.sidebar h2,
.sidebar h3 {
  color: var(--accent);
  font-size: 1rem;
  margin-bottom: 0.3rem;
}

.sidebar label {
  font-size: 0.85rem;
  color: var(--light);
}

.sidebar input {
  width: 100%;
  padding: 0.4rem 0.5rem;
  border-radius: 6px;
  border: none;
  font-size: 0.9rem;
  background: #13234b;
  color: white;
}

.sidebar input:focus {
  outline: 2px solid var(--accent);
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 10px;
}

.btn {
  font-weight: bold;
  border-radius: 6px;
  padding: 0.6rem;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}

.btn-primary {
  background: #007bff;
  color: white;
  box-shadow: 0 0 6px rgba(0, 123, 255, 0.4);
}

.btn-warning {
  background: var(--earthquake);
  color: white;
  box-shadow: 0 0 6px rgba(255, 152, 0, 0.4);
}

.btn-info {
  background: #00aaff;
  color: white;
  box-shadow: 0 0 6px rgba(0, 191, 255, 0.4);
}

.btn-secondary {
  background: #6c757d;
  color: white;
}

.btn:hover {
  transform: translateY(-1px);
  opacity: 0.9;
  box-shadow: 0 0 10px rgba(74, 139, 255, 0.5);
}

.tip {
  font-size: 0.75rem;
  color: var(--light);
  opacity: 0.8;
  margin-top: 0.5rem;
}

.mapContainer {
  padding: 0.5rem;
}

#map {
  height: 65vh;
  border-radius: 10px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
}

#results {
  margin-top: 1rem;
  background: #0d1838;
  border-radius: 10px;
  padding: 0.8rem;
  font-size: 0.9rem;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

footer {
  text-align: center;
  padding: 0.4rem;
  color: #9ea9df;
  font-size: 0.8rem;
  border-top: 1px solid #14285f;
}

/* 🌍 Legend Styling */
.legend {
  background: rgba(0, 10, 30, 0.9);
  color: #fff;
  padding: 10px 14px;
  line-height: 1.4;
  border-radius: 8px;
  font-size: 0.85rem;
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

.legend h4 {
  margin: 0 0 6px 0;
  color: var(--accent);
  font-size: 1rem;
}

.legend p {
  margin: 4px 0;
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend span {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 3px;
}

/* 🧭 Legend Color Boxes */
.legend p:nth-child(2) span {
  background: var(--impact);
}
.legend p:nth-child(3) span {
  background: var(--earthquake);
}
.legend p:nth-child(4) span {
  background: var(--tsunami);
}