:root {
  color-scheme: light dark;

  --bg: #eef1f6;
  --surface: #ffffff;
  --border: #dde3ec;
  --text: #1b2735;
  --text-muted: #5b6b80;
  --primary: #2b6cb0;
  --primary-dark: #1e4e8c;
  --shadow: rgba(30, 41, 59, 0.08);

  --accent-0: #2b6cb0;
  --accent-1: #4a6b8a;
  --accent-2: #5b7a99;
  --accent-3: #38598a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101722;
    --surface: #1a2433;
    --border: #2b3648;
    --text: #e6ebf2;
    --text-muted: #8fa0b5;
    --primary: #5b9bd9;
    --primary-dark: #7fb1e0;
    --shadow: rgba(0, 0, 0, 0.35);

    --accent-0: #5b9bd9;
    --accent-1: #6f88a6;
    --accent-2: #7d93ad;
    --accent-3: #4f75a8;
  }
}

* {
  box-sizing: border-box;
}

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

.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.page-header {
  margin-bottom: 2.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 28px;
  height: 28px;
  fill: var(--primary);
  transform: rotate(45deg);
}

.subtitle {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.aircraft-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  padding: 1.5rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 1px 3px var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  font-family: inherit;
  color: var(--text);
}

.tile:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px var(--shadow);
  border-color: var(--primary);
}

.tile.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary) inset, 0 10px 24px var(--shadow);
}

.tile-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--accent-0), var(--accent-2));
}

.tile:nth-child(4n + 2) .tile-icon-wrap {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
}

.tile:nth-child(4n + 3) .tile-icon-wrap {
  background: linear-gradient(135deg, var(--accent-2), var(--accent-0));
}

.tile:nth-child(4n + 4) .tile-icon-wrap {
  background: linear-gradient(135deg, var(--accent-3), var(--accent-1));
}

.tile-icon {
  width: 28px;
  height: 28px;
  fill: #ffffff;
  transform: rotate(45deg);
}

.tile-label {
  font-weight: 600;
  text-align: center;
  font-size: 0.95rem;
}

.tile-code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.details {
  border-top: 1px solid var(--border);
  padding-top: 1.75rem;
}

.details-header {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.details-header h2 {
  margin: 0;
  font-size: 1.3rem;
}

.code-badge {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--primary);
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem 1.4rem;
  box-shadow: 0 1px 3px var(--shadow);
}

.panel h3 {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.empty-state,
.error-state {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.error-state {
  color: #c0553c;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem 1rem;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.stat-value {
  font-size: 0.95rem;
  font-weight: 600;
}

.flights-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.flight-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
}

.flight-route {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.route-arrow {
  color: var(--primary);
}

.flight-times {
  margin-top: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}