:root {
  --bg: #0b1220;
  --bg-card: #121a2b;
  --bg-elevated: #1a2438;
  --border: #2a3650;
  --text: #e8eefc;
  --muted: #93a0bd;
  --accent: #3d8bfd;
  --accent-soft: rgba(61, 139, 253, 0.15);
  --good: #3dd68c;
  --good-soft: rgba(61, 214, 140, 0.14);
  --warn: #f5b942;
  --warn-soft: rgba(245, 185, 66, 0.14);
  --bad: #ff6b7a;
  --bad-soft: rgba(255, 107, 122, 0.14);
  --purple: #b08cff;
  --radius: 14px;
  --font: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  margin: 0;
  padding: 0;
  background: var(--bg);
  /* One continuous page scroll — avoid nested scroll traps on iOS */
  height: auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overflow-x: hidden;
}

body {
  margin: 0;
  padding: 0;
  padding-bottom: calc(32px + env(safe-area-inset-bottom));
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.4;
  min-height: 100%;
  min-height: 100dvh;
  overflow-x: hidden;
  /* Do not lock body height / overflow — whole app scrolls with the page */
  overflow-y: visible;
}

.app {
  max-width: 520px;
  margin: 0 auto;
  padding: 10px 14px 40px;
  /* Natural document flow; no max-height or internal scroll */
  overflow: visible;
}

/* Compact header — scrolls away with content (no sticky takeover) */
header.top-bar {
  position: relative;
  z-index: 5;
  padding: 6px 0 10px;
  margin-bottom: 4px;
  background: var(--bg);
}

.top-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
}

.top-actions select {
  margin: 0;
}

.top-actions .primary {
  flex: none;
  white-space: nowrap;
  padding: 10px 14px;
}

.auth-nav {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: flex-end;
  margin: 4px 0 8px;
  font-size: 0.85rem;
}

.auth-nav a {
  color: var(--muted);
  text-decoration: none;
}

.auth-nav a.auth-nav-cta {
  color: var(--accent);
  font-weight: 650;
}

.access-banner {
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--warn);
  background: var(--warn-soft);
  border: 1px solid rgba(245, 185, 66, 0.35);
}

.access-banner a {
  color: var(--accent);
  font-weight: 650;
}

.access-banner.hidden {
  display: none;
}

.brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.brand h1 {
  font-size: 1.15rem;
  margin: 0;
  letter-spacing: -0.02em;
}

.brand .sub {
  color: var(--muted);
  font-size: 0.78rem;
  margin-top: 2px;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--muted);
  white-space: nowrap;
}

.pill.live { color: var(--good); border-color: rgba(61,214,140,0.35); background: var(--good-soft); }
.pill.demo { color: var(--warn); border-color: rgba(245,185,66,0.35); background: var(--warn-soft); }

.controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.controls.plan-row {
  grid-template-columns: 1fr;
  margin-top: 8px;
}

.field-wide {
  width: 100%;
}

input[type="datetime-local"] {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font: inherit;
  color-scheme: dark;
}

.planning-banner {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--warn);
  background: var(--warn-soft);
  border: 1px solid rgba(245, 185, 66, 0.35);
}

.planning-banner.hidden {
  display: none;
}

.dw-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

.dw-chip {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
}

.dw-chip-label {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.dw-chip-range {
  font-size: 0.88rem;
  font-weight: 650;
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

.field label {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

select, button {
  font: inherit;
  color: var(--text);
}

select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 16px) calc(50% - 3px), calc(100% - 11px) calc(50% - 3px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.btn-row {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

button.primary, button.ghost {
  border-radius: 10px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
}

button.primary {
  flex: 1;
  background: var(--accent);
  border-color: transparent;
  color: #fff;
}

button.primary:active { transform: scale(0.98); }

button.ghost {
  background: var(--bg-card);
  color: var(--text);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-top: 12px;
}

.card h2 {
  margin: 0 0 8px;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.card .meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.reco {
  border-color: rgba(61, 139, 253, 0.35);
  background: linear-gradient(160deg, rgba(61,139,253,0.12), var(--bg-card) 55%);
}

.reco .action {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 8px;
  border-radius: 6px;
  margin-bottom: 8px;
}

.action.go { background: var(--good-soft); color: var(--good); }
.action.go_if_nearby { background: var(--accent-soft); color: var(--accent); }
.action.caution { background: var(--warn-soft); color: var(--warn); }
.action.wait { background: var(--bad-soft); color: var(--bad); }

.reco .headline {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.02em;
  margin: 0 0 10px;
}

.data-range {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  margin: 0 0 12px;
}

.data-range strong {
  color: var(--text);
  font-weight: 650;
}

.window-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.stat {
  background: var(--bg-elevated);
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.stat.active {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.stat .n {
  font-size: 1.55rem;
  font-weight: 750;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat .l {
  font-size: 0.68rem;
  color: var(--muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat .r {
  font-size: 0.7rem;
  color: var(--text);
  margin-top: 4px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  opacity: 0.9;
}

.factor {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
}

.factor:first-of-type { border-top: none; padding-top: 0; }

.factor .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-top: 5px;
  flex-shrink: 0;
  background: var(--muted);
}

.dot.weather { background: var(--accent); }
.dot.personnel, .dot.personnel_or_cascade { background: var(--purple); }
.dot.volume, .dot.traffic_management { background: var(--warn); }
.dot.faa { background: var(--warn); }
.dot.clear { background: var(--good); }

.factor .title {
  font-weight: 650;
  font-size: 0.88rem;
}

.factor .detail {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 2px;
}

.weather-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.chip {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.78rem;
  color: var(--muted);
}

.chip strong { color: var(--text); font-weight: 650; }

.impact {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 4px 8px;
  border-radius: 6px;
  margin-bottom: 8px;
}

.impact.low { background: var(--good-soft); color: var(--good); }
.impact.moderate { background: var(--warn-soft); color: var(--warn); }
.impact.high, .impact.severe { background: var(--bad-soft); color: var(--bad); }
.impact.unknown, .impact.none, .impact.watch { background: var(--bg-elevated); color: var(--muted); }

.flight-card {
  /* Keep flight list easy to read — no height cap */
  overflow: visible;
}

#flight-list {
  overflow: visible;
  max-height: none;
}

.flight {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 10px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}

.flight:first-child { border-top: none; }

.flight .code {
  font-weight: 750;
  letter-spacing: -0.02em;
}

.flight .route {
  color: var(--muted);
  font-size: 0.82rem;
}

.flight .codeshare {
  color: var(--muted);
  font-size: 0.72rem;
  margin-top: 2px;
  opacity: 0.95;
}

.cs-tag {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 1px 5px;
  border-radius: 4px;
  vertical-align: middle;
  color: var(--purple);
  background: rgba(176, 140, 255, 0.14);
  border: 1px solid rgba(176, 140, 255, 0.3);
}

.est-badge {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: 999px;
  color: var(--warn);
  background: var(--warn-soft);
  border: 1px solid rgba(245, 185, 66, 0.35);
  vertical-align: middle;
}

.flight .time-col {
  text-align: right;
}

.flight .time {
  text-align: right;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.flight .time-eta-label {
  text-align: right;
  font-size: 0.62rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1px;
}

.flight .time-sched {
  text-align: right;
  font-size: 0.72rem;
  color: var(--warn);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}

.flight .status {
  text-align: right;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 4px;
}

.status.scheduled { color: var(--muted); }
.status.en_route { color: var(--accent); }
.status.delayed { color: var(--warn); }
.status.landed { color: var(--good); }
.status.cancelled { color: var(--bad); }

.delay-badge {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--warn-soft);
  color: var(--warn);
  font-weight: 700;
}

.early-badge {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--good-soft);
  color: var(--good);
  font-weight: 700;
}

.flight .time-early {
  text-align: right;
  font-size: 0.72rem;
  color: var(--good);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}

.bin {
  padding: 10px 0;
  border-top: 1px solid var(--border);
}

.bin:first-of-type { border-top: none; }

.bin .row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: baseline;
}

.bin .score-wrap {
  text-align: right;
  flex-shrink: 0;
}

.bin .score {
  font-weight: 750;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem;
}

.bin .score-label {
  font-size: 0.62rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1px;
}

.leave {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--good);
  background: var(--good-soft);
  padding: 3px 8px;
  border-radius: 6px;
}

.leave.late {
  color: var(--warn);
  background: var(--warn-soft);
}

#quota-line {
  margin-top: 4px;
  color: var(--good);
}

#quota-line.quota-low {
  color: var(--warn);
}

.empty {
  color: var(--muted);
  font-size: 0.9rem;
  padding: 8px 0;
}

.footer-note {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.72rem;
  text-align: center;
  line-height: 1.5;
}

.loading {
  text-align: center;
  padding: 40px 16px;
  color: var(--muted);
}

.error {
  background: var(--bad-soft);
  border: 1px solid rgba(255,107,122,0.35);
  color: var(--bad);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-top: 12px;
  font-size: 0.9rem;
}

.hidden { display: none !important; }

/* Collapsible tools at bottom */
.tools-panel {
  cursor: default;
}

.tools-panel summary {
  font-weight: 700;
  font-size: 0.95rem;
  list-style: none;
  cursor: pointer;
  padding: 2px 0;
}

.tools-panel summary::-webkit-details-marker {
  display: none;
}

.tools-panel summary::after {
  content: " ▾";
  color: var(--muted);
  font-weight: 500;
}

.tools-panel[open] summary::after {
  content: " ▴";
}

.tools-body {
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

@media (min-width: 480px) {
  .app { padding-top: 18px; }
  .brand h1 { font-size: 1.3rem; }
}