:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #152033;
  --muted: #657184;
  --border: #dde3eb;
  --accent: #0f5bd3;
  --accent-dark: #0a459f;
  --success-bg: #edf9f2;
  --success-border: #9ed7b3;
  --success-text: #17643a;
  --danger-bg: #fff1f1;
  --danger-border: #efb0b0;
  --danger-text: #a32323;
  --probe: #2563eb;
  --root: #ef4444;
  --shadow: 0 10px 30px rgba(19, 39, 71, 0.08);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a { color: var(--accent); }

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 36px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.05; }
h2 { margin: 0 0 6px; font-size: 1.3rem; }
.lede { max-width: 860px; color: var(--muted); font-size: 1.02rem; }

.data-status {
  white-space: nowrap;
  background: #eaf2ff;
  border: 1px solid #c9dcff;
  color: #244f91;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.9rem;
}

.checker-card,
.map-card,
.daily-details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.checker-card { padding: 22px; }

.controls-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1.8fr) minmax(150px, 0.7fr) minmax(150px, 0.65fr);
  gap: 16px;
  align-items: end;
}

.field { display: grid; gap: 7px; font-weight: 700; font-size: 0.9rem; }
.field input {
  width: 100%;
  height: 44px;
  border: 1px solid #cfd6e0;
  border-radius: 10px;
  padding: 0 12px;
  font: inherit;
  background: white;
}
.field input:focus { outline: 3px solid rgba(15,91,211,.12); border-color: var(--accent); }

.input-suffix { display: flex; align-items: center; gap: 8px; }
.input-suffix span { color: var(--muted); font-weight: 500; }

button {
  height: 44px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: white;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}
button:hover { background: var(--accent-dark); }

/* Header actions sit beneath the newest-data badge on the right. */
.hero > div:first-child {
  flex: 1 1 auto;
  min-width: 0;
}

.header-actions {
  flex: 0 0 320px;
  width: 320px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
}

/* A full-width, non-interactive status row, matching the link rows' footprint. */
.header-actions .data-status {
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: #244f91;
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  cursor: default;
}

.header-links {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid #c9dcff;
  border-radius: 10px;
  background: #eaf2ff;
  color: var(--accent-dark);
  font-size: 0.9rem;
  line-height: 1.35;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.download-button:hover {
  background: #dbe9ff;
  text-decoration: none;
}

.github-button {
  background: #ffffff;
  border-color: #cfd6e0;
  color: #334155;
}

.github-button:hover {
  background: #f1f5f9;
}

.download-status {
  color: var(--muted);
  font-size: 0.8rem;
  text-align: right;
  overflow-wrap: anywhere;
}
button:disabled { opacity: .6; cursor: wait; }

.toggle-row {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  padding-top: 18px;
  margin-top: 18px;
  border-top: 1px solid var(--border);
}

.toggle-control {
  display: grid;
  grid-template-columns: auto auto;
  column-gap: 8px;
  align-items: center;
  font-weight: 700;
}
.toggle-control input { width: 18px; height: 18px; }
.toggle-control small { grid-column: 2; color: var(--muted); font-weight: 500; }

.hidden { display: none !important; }

.message,
.result-banner {
  margin-top: 22px;
  border-radius: 12px;
  padding: 15px 17px;
  font-weight: 700;
}
.message { background: #fff9e7; border: 1px solid #efd484; color: #755916; }
.result-banner.success { background: var(--success-bg); border: 1px solid var(--success-border); color: var(--success-text); }
.result-banner.danger { background: var(--danger-bg); border: 1px solid var(--danger-border); color: var(--danger-text); }

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.metric-grid.compact { grid-template-columns: repeat(2, minmax(0, 260px)); }
.metric-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
}
.metric-card span { display: block; color: var(--muted); font-size: .85rem; margin-bottom: 6px; }
.metric-card strong { font-size: 1.35rem; }
.probe-meta { color: var(--muted); }

.section-heading { margin-top: 34px; }
.section-heading p, .map-header p { color: var(--muted); margin: 0; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: white;
}

table { border-collapse: collapse; width: 100%; min-width: 760px; }
th, td { padding: 11px 12px; border-bottom: 1px solid #edf0f4; text-align: left; font-size: .9rem; white-space: nowrap; }
th { background: #f7f9fc; color: #48556a; font-weight: 800; position: sticky; top: 0; }
tbody tr:last-child td { border-bottom: 0; }

.map-card { margin-top: 24px; overflow: hidden; }
.map-header {
  padding: 18px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  border-bottom: 1px solid var(--border);
}
.map-legend { display: flex; flex-direction: column; gap: 8px; font-size: .88rem; color: #465268; white-space: nowrap; }
.legend-dot { width: 11px; height: 11px; border-radius: 50%; display: inline-block; margin-right: 7px; }
.probe-dot { background: var(--probe); }
.root-dot { background: var(--root); }
/* Static world overview: no Leaflet or map tiles. */
.world-map {
  width: 100%;
  background: #dceff6;
}

.world-map svg {
  display: block;
  width: 100%;
  height: auto;
}

.map-ocean {
  fill: #dceff6;
  stroke: #c5dce7;
  stroke-width: 1;
}

.map-country {
  fill: #f3f0ea;
  stroke: #c8ced7;
  stroke-width: 0.65;
  vector-effect: non-scaling-stroke;
}

.map-graticule {
  fill: none;
  stroke: rgba(106, 128, 151, 0.18);
  stroke-width: 0.55;
  vector-effect: non-scaling-stroke;
}

.map-point {
  stroke: white;
  stroke-width: 2.5;
  vector-effect: non-scaling-stroke;
}

.probe-point { fill: var(--probe); }
.root-point { fill: var(--root); }

.map-error {
  padding: 32px;
  color: var(--muted);
  text-align: center;
}

.daily-details { margin-top: 24px; padding: 0; overflow: hidden; }
.daily-details summary { cursor: pointer; font-weight: 800; padding: 16px 18px; }
.daily-details .table-wrap { border: 0; border-top: 1px solid var(--border); border-radius: 0; }

footer { color: var(--muted); font-size: .86rem; margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--border); }

@media (max-width: 780px) {
  .page-shell { width: min(100% - 20px, 1180px); padding-top: 24px; }
  .hero { display: block; }
  .header-actions { width: 100%; margin-top: 20px; }
  .header-actions .data-status { align-self: stretch; }
  .download-status { text-align: left; }
  .controls-grid { grid-template-columns: 1fr; }
  .metric-grid, .metric-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .map-header { display: block; }
  .map-legend { margin-top: 14px; }
}