/* =====================================================
   HUD — Topbar, Bottombar, Tooltip
   ===================================================== */

/* Top bar */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: linear-gradient(180deg, rgba(2,4,8,0.96) 0%, transparent 100%);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 28px;
  z-index: 20;
  pointer-events: auto;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  white-space: nowrap;
}
.logo span {
  color: var(--text);
  font-weight: 400;
}

.live-label {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse-dot 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1;   box-shadow: 0 0 8px var(--accent); }
  50%       { opacity: 0.4; box-shadow: 0 0 2px var(--accent); }
}

/* View toggle (Globe / Map) */
.view-toggle {
  display: flex;
  gap: 2px;
  background: rgba(0,0,0,0.4);
  border: 1px solid var(--border);
  padding: 3px;
}

.view-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--dim);
  background: transparent;
  border: none;
  padding: 4px 12px;
  cursor: pointer;
  text-transform: uppercase;
  transition: all var(--transition);
}
.view-btn.active {
  background: var(--accent);
  color: var(--bg);
  font-weight: 700;
}
.view-btn:not(.active):hover {
  color: var(--text);
}

.timestamp {
  margin-left: auto;
  font-size: 11px;
  color: var(--dim);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* Bottom bar */
.bottombar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: 34px;
  background: linear-gradient(0deg, rgba(2,4,8,0.96) 0%, transparent 100%);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 6px;
  font-size: 10px;
  color: var(--dim);
  letter-spacing: 0.08em;
  z-index: 20;
  border-top: 1px solid var(--border);
  backdrop-filter: blur(4px);
  pointer-events: none;
}
.bottombar span {
  color: var(--accent);
}

/* Tooltip */
#tooltip {
  position: fixed;
  background: rgba(2, 10, 20, 0.96);
  border: 1px solid var(--border);
  padding: 10px 14px;
  font-size: 11px;
  pointer-events: none;
  display: none;
  z-index: 100;
  min-width: 170px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 20px rgba(0,255,224,0.1);
}

.tip-callsign {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.tip-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--dim);
  margin-bottom: 3px;
  font-size: 10px;
}
.tip-row span:last-child {
  color: var(--text);
}

/* ---- Flight Detail Panel ---- */
#flight-panel {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 240px;
  background: rgba(2, 10, 20, 0.96);
  border: 1px solid var(--border);
  padding: 18px 16px;
  display: none;
  z-index: 200;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 30px rgba(0,255,224,0.12);
}
#flight-panel.open { display: block; }

#flight-panel-close {
  position: absolute;
  top: 10px; right: 12px;
  cursor: pointer;
  color: var(--dim);
  font-size: 12px;
}
#flight-panel-close:hover { color: var(--accent); }

#fp-callsign {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 2px;
}
#fp-airline {
  font-size: 10px;
  color: var(--dim);
  margin-bottom: 12px;
}
.fp-divider {
  border-top: 1px solid var(--border);
  margin: 10px 0;
}
.fp-row {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--dim);
  margin-bottom: 5px;
}
.fp-row span:last-child { color: var(--text); }

/* FROM/TO bigger */
.fp-row:has(#fp-dep) span:first-child,
.fp-row:has(#fp-arr) span:first-child {
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--accent);
  opacity: 0.6;
}
.fp-row:has(#fp-dep) span:last-child,
.fp-row:has(#fp-arr) span:last-child {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
}

.fp-loading {
  display: none;
  font-size: 10px;
  color: var(--dim);
  margin-top: 10px;
  align-items: center;
  gap: 8px;
}
.fp-loading.active { display: flex; }

.fp-spinner {
  width: 10px; height: 10px;
  border: 1px solid var(--dim);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }