:root {
  --bg:         #090d12;
  --bg-panel:   #0c1017;
  --bg-card:    #101720;
  --border:     #1a2535;
  --border2:    #243244;
  --text:       #c8d8e8;
  --muted:      #4a5a6a;
  --dim:        #1e2e40;
  --accent:     #1456a8;
  --accent-lt:  #2a7ae0;
  --accent-bg:  #0d2240;
  --warn:       #d4a020;
  --warn-bg:    #1a1400;
  --warn-border:#5a3a00;
  --caution:    #d4a020;
  --warning:    #c04040;
  --warning-bg: #1a0a0a;
  --ok:         #3a9a50;
  --error:      #c04040;
  --font:       'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

body { overscroll-behavior-y: none; }

.screen { min-height: 100vh; min-height: 100dvh; }
.screen[hidden] { display: none; }

/* ── Login ────────────────────────────────────────── */
/* :not([hidden]) avoids this ID rule's specificity beating .screen[hidden] */
#login-screen:not([hidden]) {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 320px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  padding: 36px 28px;
  text-align: center;
}

.login-logo {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent-lt);
  letter-spacing: 4px;
}

.login-title {
  font-size: 13px;
  color: var(--text);
  letter-spacing: 3px;
  margin-top: 8px;
}

.login-sub {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
  margin-top: 4px;
  margin-bottom: 28px;
}

.g_signin_button { display: flex; justify-content: center; }

.login-error {
  margin-top: 16px;
  font-size: 11px;
  color: var(--error);
  letter-spacing: 0.5px;
}

/* ── App header ───────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  height: 48px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-logo {
  font-size: 16px;
  font-weight: 700;
  color: var(--accent-lt);
  letter-spacing: 3px;
  margin-right: auto;
}

.conn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
}
.conn-dot.online  { background: var(--ok); box-shadow: 0 0 6px var(--ok); animation: pulse 2s infinite; }
.conn-dot.offline { background: var(--error); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.conn-label {
  font-size: 10px;
  letter-spacing: 1.5px;
  color: var(--muted);
}

.logout-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 18px;
  padding: 4px 8px;
  cursor: pointer;
  margin-left: 8px;
}

.offline-banner {
  background: var(--warn-bg);
  border-bottom: 1px solid var(--warn-border);
  color: var(--warn);
  font-size: 11px;
  letter-spacing: 0.5px;
  text-align: center;
  padding: 8px 12px;
}

.alert-banner {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-align: center;
  padding: 12px;
  text-transform: uppercase;
}
.alert-banner.caution { background: var(--warn-bg); color: var(--caution); border-bottom: 2px solid var(--caution); }
.alert-banner.warning { background: var(--warning-bg); color: var(--warning); border-bottom: 2px solid var(--warning); animation: flash 1s infinite; }

@keyframes flash {
  0%, 100% { background: var(--warning-bg); }
  50% { background: #2a0f0f; }
}

/* ── Map ──────────────────────────────────────────── */
#flight-map {
  height: 42vh;
  width: 100%;
  background: #0a1520;
}

/* ── Status panel ─────────────────────────────────── */
.panel {
  padding: 16px;
  padding-bottom: 40px;
}

.route-line {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.route-icao {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 1px;
}

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

.phase-pill {
  margin-left: auto;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent-lt);
  background: var(--accent-bg);
  border: 1px solid var(--border2);
  padding: 4px 10px;
  border-radius: 2px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

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

.stat-label {
  font-size: 9px;
  letter-spacing: 1.5px;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.stat-value {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}

.stat-unit {
  font-size: 11px;
  font-weight: normal;
  color: var(--muted);
  margin-left: 4px;
}

.tod-card {
  background: var(--bg-card);
  border: 1px solid var(--border2);
  border-left: 3px solid var(--accent);
  padding: 14px 16px;
  margin-bottom: 16px;
}

.tod-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent-lt);
  margin-top: 4px;
}

.tod-source {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.5px;
  margin-top: 4px;
}

.updated-line {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.5px;
  text-align: center;
}

/* ── Leaflet marker ───────────────────────────────── */
.aircraft-icon {
  color: var(--accent-lt);
  filter: drop-shadow(0 0 3px rgba(42, 122, 224, 0.8));
}