/* Flight Search — hand-built UI. No frameworks, no external assets. */

:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #1a56db;
  --accent-dark: #1443ad;
  --border: #e5e7eb;
  --row-alt: #f9fafb;
  --row-hover: #eff6ff;
  --error-bg: #fef2f2;
  --error-text: #b91c1c;
  --error-border: #fecaca;
  --radius: 12px;
}

* { box-sizing: border-box; }

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

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- header ---------- */

.site-header {
  padding: 40px 0 8px;
}

.site-header h1 {
  margin: 0 0 4px;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-header .subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- search card ---------- */

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.06);
}

.search-card {
  margin: 24px 0;
  padding: 24px;
}

.fields {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  flex-wrap: wrap;
}

.field {
  flex: 1 1 180px;
  display: flex;
  flex-direction: column;
}

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.field input {
  padding: 11px 12px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}

.field input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}

.field .hint {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

.field-btn {
  flex: 0 0 auto;
}

.btn-primary {
  padding: 12px 28px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary:hover { background: var(--accent-dark); }
.btn-primary:disabled { opacity: 0.6; cursor: default; }

.btn-secondary {
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  background: #fff;
  border: 1px solid var(--accent);
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}

.btn-secondary:hover { background: var(--row-hover); }

/* ---------- states ---------- */

.hidden { display: none !important; }

.empty-state {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 56px 24px;
  text-align: center;
  color: var(--muted);
  background: var(--card);
  margin-bottom: 48px;
}

.empty-state p { margin: 6px 0; }
.empty-state .big { font-size: 17px; color: var(--text); font-weight: 600; }

.loading-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--muted);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.08);
  margin-bottom: 48px;
}

.spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto 12px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.error-box {
  background: var(--error-bg);
  color: var(--error-text);
  border: 1px solid var(--error-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 24px;
  font-size: 15px;
}

/* ---------- results ---------- */

#results { margin-bottom: 64px; }

.summary {
  font-size: 16px;
  margin: 8px 0 12px;
}

.summary strong { font-weight: 700; }

.results-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.verify-link {
  color: var(--accent);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.verify-link:hover { text-decoration: underline; }

.filters {
  display: flex;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--muted);
}

.filters label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filters input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.filters input[type="number"] {
  width: 90px;
  padding: 6px 8px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.pool-filter {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 12px;
  font-size: 14px;
}

.pool-label {
  color: var(--muted);
  font-weight: 600;
  margin-right: 4px;
}

.pool-btn {
  padding: 7px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
}

.pool-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pool-btn.active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.pool-counts {
  color: var(--muted);
  font-size: 14px;
}

td.tab-cell {
  color: var(--muted);
  font-size: 13px;
  text-transform: capitalize;
}

.table-wrap {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.06);
  overflow: auto;
  max-height: 70vh;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

thead th {
  position: sticky;
  top: 0;
  background: #f3f4f6;
  text-align: left;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  padding: 12px 16px;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  z-index: 1;
}

thead th:hover { color: var(--text); }

thead th .arrow { color: var(--accent); margin-left: 4px; }

tbody td {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr:nth-child(even) { background: var(--row-alt); }
tbody tr:hover { background: var(--row-hover); }

td.num, th.num { text-align: right; }

td.price {
  font-weight: 700;
  color: var(--accent);
  font-size: 16px;
}

.no-results {
  text-align: center;
  padding: 32px;
  color: var(--muted);
}