:root {
  --bg: #5f5d5d;
  --panel: #151821;
  --text: #000000;
  --muted: #ffffff;
  --brand: #5aa9ff;
  --border: #232838;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

/* Header container */
.site-header {
  position: sticky; /* stays on top when scrolling */
  top: 0;
  z-index: 100;
  background: #0b0d12cc; /* translucent for a modern look */
  backdrop-filter: blur(8px); /* glass effect (where supported) */
  border-bottom: 1px solid var(--border);
}

/* Header layout */
.site-header nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tabs {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 0.5rem;
}

/* Tab buttons */
.tabs [role="tab"] {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
  padding: 0.5rem 0.75rem;
  border-radius: 999px; /* pill shape */
  cursor: pointer;
}

.tabs [role="tab"]:hover {
  filter: brightness(1.1);
}

.tabs [role="tab"]:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* Active tab (via aria-selected) */
.tabs [role="tab"][aria-selected="true"] {
  color: var(--text);
  border-color: var(--border);
  background: #767d93;
}

/* Handle narrow screens: tabs should wrap instead of overflowing */
@media (max-width: 520px) {
  .site-header nav {
    flex-wrap: wrap;
  }
  .tabs {
    flex-wrap: wrap;
  }
}

/* Page as two rows: sticky header + fill-the-rest main */
html,
body {
  height: 100%;
}
body {
  display: grid;
  grid-template-rows: auto 1fr; /* header height + main flex */
}

/* Full-height two-column split under the header */
.layout-full {
  height: 100%; /* occupies the full remaining viewport */
  display: grid;
  grid-template-columns: 440px minmax(0, 1fr); /* left fixed-ish, right expands */
  gap: 0; /* no gutters like MapQuest */
}

/* LEFT: content column */
.left-pane {
  overflow: auto; /* left column scrolls independently if long */
  padding: 16px; /* inner breathing room */
}

/* RIGHT: map column (fills entirely) */
.right-pane {
  position: relative; /* positioning context for map canvas */
  overflow: hidden;
}

/* Map canvas fills the right pane */
.map-canvas {
  position: absolute;
  inset: 0; /* top:0 right:0 bottom:0 left:0 */
}

/* Responsive: when narrow, stack and keep map big */
@media (max-width: 900px) {
  .layout-full {
    grid-template-columns: 1fr; /* stack */
  }
  .right-pane {
    min-height: 50vh;
  } /* give the map presence when stacked */
}

.brand {
  color: white;
  text-decoration: none;
  font-weight: bolder;
}