/* css/hud.css — Full-screen HUD bar (theme toggle, stage toggle, 12h toggle, timetable button, fullscreen, kbd hints). Imported into the components layer. */

.hud {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(10, 10, 10, 0.98) 80%, transparent);
  padding: var(--space-4) var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  z-index: 100;
  transition: right var(--transition), opacity 0.6s ease;
}

body.hud-idle .hud {
  opacity: 0;
  pointer-events: none;
}

/* Mode tabs */
.hud__modes {
  display: flex;
  gap: var(--space-2);
  background: var(--bg-surface);
  border-radius: 999px;
  padding: var(--space-1);
}

.hud__mode-tab {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: 999px;
  color: var(--text-muted);
  transition: background var(--transition), color var(--transition);
}

.hud__mode-tab:hover {
  color: var(--text-primary);
}

.hud__mode-tab--active {
  background: var(--accent-amber);
  color: #0a0a0a;
  font-weight: 600;
}

/* Offset row */
.hud__offset-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hud__offset-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 100px;
  text-align: center;
  font-family: var(--font-mono);
}

.hud__offset-badge--active {
  color: var(--accent-amber);
}

.hud__offset-reset-row {
  min-height: 20px;
}

.hud__offset-reset {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-decoration: underline;
  transition: color var(--transition);
}

.hud__offset-reset:hover {
  color: var(--text-primary);
}

.hud__offset-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  letter-spacing: 0.02em;
}

/* Countdown target input row */
/* Transport */
.hud__transport {
  display: flex;
  gap: var(--space-3);
  min-height: 40px;
}

/* Utility row */
.hud__utility {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 600px;
}

.hud__timetable-toggle {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  transition: color var(--transition);
}

.hud__timetable-toggle:hover,
.hud__timetable-toggle[aria-expanded="true"] {
  color: var(--accent-amber);
}

.hud__shortcut-toggle {
  width: 28px;
  height: 28px;
  min-height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}

.hud__shortcut-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.hud__theme-toggle {
  height: 28px;
  min-height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}

.hud__theme-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.hud__stage-toggle {
  height: 28px;
  min-height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition),
              border-color var(--transition),
              color var(--transition);
}

.hud__stage-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.hud__stage-toggle--active {
  background: var(--accent-amber);
  color: #0a0a0a;
  border-color: transparent;
  font-weight: 600;
}

.hud__stage-toggle:focus-visible {
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

.hud__fullscreen-toggle {
  height: 28px;
  min-height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  transition: border-color var(--transition), color var(--transition);
}

.hud__fullscreen-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.hud__12h-toggle {
  height: 28px;
  min-height: 44px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition);
}

.hud__12h-toggle:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

/* REL-01 (D-29-01): Wake Lock text chip. Visible (amber) only when lock is held;
   the `hidden` attribute (toggled by the listener in js/main.js) drives visibility.
   Visual precedent: .hud__offset-badge (text-only, mono, amber-on-active). */
.hud__wakelock {
  height: 28px;
  min-height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(240, 236, 228, 0.2);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-amber);
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.02em;
}

.hud__wakelock[hidden] {
  display: none;
}