/* ============================================================
   APEX DRIFT — stylesheet
   Design tokens: deep-space navy base, coral/teal/amber accents,
   Orbitron for display type, Rajdhani for UI/body text.
   ============================================================ */

:root {
  --bg-void: #0a0e1a;
  --bg-panel: #121a2e;
  --bg-panel-2: #17203a;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #ff5d3a;
  --accent-2: #2fe6c1;
  --accent-3: #ffd23f;
  --text-primary: #eef1f8;
  --text-muted: #8993ad;
  --danger: #ff4457;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
}

* { box-sizing: border-box; }

.hidden { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: 'Rajdhani', 'Segoe UI', sans-serif;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
  overscroll-behavior: none;
}

#app-root {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

#bg-gradient {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(180deg, #131b33 0%, #0a0e1a 65%);
  transition: background 0.6s ease;
}

#game-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

h1, h2, h3 {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  margin: 0;
}

/* ---------- Screens ---------- */
.screen {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: none;
  flex-direction: column;
  padding: calc(24px + var(--safe-top)) calc(24px + var(--safe-right)) calc(24px + var(--safe-bottom)) calc(24px + var(--safe-left));
  overflow-y: auto;
  pointer-events: none;
}
.screen.active { display: flex; }
.screen.active > * { pointer-events: auto; }
.screen.overlay.active {
  background: rgba(6, 8, 16, 0.72);
  backdrop-filter: blur(6px);
  align-items: center;
  justify-content: center;
}

/* ---------- Main menu ---------- */
.screen-menu.active {
  justify-content: flex-end;
  align-items: flex-start;
}
.menu-panel {
  background: linear-gradient(160deg, rgba(18, 26, 46, 0.88), rgba(10, 14, 26, 0.88));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 30px;
  max-width: 380px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
}
.brand { margin-bottom: 22px; }
.game-title {
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 900;
  letter-spacing: 1px;
  color: var(--text-primary);
  line-height: 1;
}
.game-title span { color: var(--accent); }
.game-subtitle {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 1.05rem;
  letter-spacing: 2px;
  font-weight: 600;
}
.menu-nav { display: flex; flex-direction: column; gap: 10px; }
.menu-hint {
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-panel-2);
  color: var(--text-primary);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.5px;
  padding: 14px 18px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { border-color: rgba(255,255,255,0.22); background: #1c2643; }
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #16110d;
}
.btn-primary:hover { background: #ff7452; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); }
.btn-large { width: 100%; font-size: 1.2rem; padding: 16px; margin-top: 18px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--bg-panel-2);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

/* ---------- Screen header ---------- */
.screen-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.screen-header h2 { font-size: 1.6rem; }

/* ---------- Track select ---------- */
.track-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
  max-width: 900px;
}
.track-card {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.12s ease;
  position: relative;
}
.track-card:hover { border-color: var(--accent-2); transform: translateY(-2px); }
.track-card.locked { cursor: not-allowed; opacity: 0.55; }
.track-card.locked:hover { transform: none; border-color: var(--line); }
.track-card h3 { font-size: 1.15rem; margin-bottom: 2px; }
.track-card .card-sub { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 10px; }
.track-card .card-meta { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); }
.track-card .card-swatch {
  position: absolute; top: 14px; right: 14px;
  width: 12px; height: 12px; border-radius: 50%;
}
.track-card .lock-badge {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--text-muted);
}

/* ---------- Track info ---------- */
.info-panel {
  max-width: 440px;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.info-subtitle { color: var(--text-muted); margin: -6px 0 16px; }
.info-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.stat { background: var(--bg-panel-2); border-radius: 10px; padding: 10px 12px; display: flex; flex-direction: column; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); letter-spacing: 1px; }
.stat-value { font-size: 1.25rem; font-weight: 700; }
.info-stars { margin-top: 14px; font-size: 1.4rem; letter-spacing: 4px; color: var(--accent-3); }

/* ---------- Garage ---------- */
.garage-hint { color: var(--text-muted); margin-bottom: 14px; }
.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: 12px;
  max-width: 560px;
}
.color-swatch {
  aspect-ratio: 1;
  border-radius: 14px;
  border: 3px solid transparent;
  cursor: pointer;
  display: flex; align-items: flex-end; justify-content: center;
  padding-bottom: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(0,0,0,0.6);
  transition: transform 0.12s ease;
}
.color-swatch:hover { transform: scale(1.04); }
.color-swatch.selected { border-color: #fff; }

/* ---------- How to play ---------- */
.howto-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  max-width: 900px;
}
.howto-col {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.howto-col h3 { color: var(--accent-2); margin-bottom: 10px; font-size: 1rem; letter-spacing: 1px; }
.howto-col ul { margin: 0; padding-left: 18px; color: var(--text-primary); font-size: 0.95rem; line-height: 1.7; }
.key {
  display: inline-block;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 1px 7px;
  margin-right: 6px;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.72rem;
}

/* ---------- Settings ---------- */
.settings-panel { max-width: 480px; display: flex; flex-direction: column; gap: 14px; }
.setting-row {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--bg-panel); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px;
}
.toggle { position: relative; width: 48px; height: 26px; display: inline-block; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-track {
  position: absolute; inset: 0; background: var(--bg-panel-2);
  border: 1px solid var(--line); border-radius: 999px; cursor: pointer; transition: background 0.15s;
}
.toggle-track::before {
  content: ''; position: absolute; width: 20px; height: 20px; left: 2px; top: 2px;
  background: var(--text-muted); border-radius: 50%; transition: transform 0.15s, background 0.15s;
}
.toggle input:checked + .toggle-track { background: rgba(47, 230, 193, 0.25); border-color: var(--accent-2); }
.toggle input:checked + .toggle-track::before { transform: translateX(22px); background: var(--accent-2); }

.segmented { display: flex; border-radius: 8px; overflow: hidden; border: 1px solid var(--line); }
.segmented button {
  background: var(--bg-panel-2); color: var(--text-muted); border: none;
  padding: 8px 14px; font-family: 'Rajdhani', sans-serif; font-weight: 700; cursor: pointer;
}
.segmented button.active { background: var(--accent-2); color: #08201b; }

/* ---------- Countdown ---------- */
.overlay-layer {
  position: absolute; inset: 0; z-index: 20;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none;
}
.overlay-layer.hidden { display: none; }
#countdown-number {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(4rem, 18vw, 9rem);
  font-weight: 900;
  color: var(--accent-3);
  text-shadow: 0 0 40px rgba(255, 210, 63, 0.6);
  animation: countPulse 1s ease-out;
}
@keyframes countPulse {
  0% { transform: scale(0.6); opacity: 0; }
  30% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* ---------- Fullscreen ---------- */
.menu-fullscreen {
  position: absolute;
  top: calc(16px + var(--safe-top));
  right: calc(16px + var(--safe-right));
  z-index: 8;
  pointer-events: auto;
}
.hud-fullscreen { pointer-events: auto; }

/* ---------- Rotate device overlay ---------- */
#rotate-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 20%, #16203a 0%, #0a0e1a 70%);
  text-align: center;
  padding: 24px;
}
#rotate-overlay.hidden { display: none; }
.rotate-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.rotate-icon {
  font-family: 'Orbitron', sans-serif;
  font-size: 5rem;
  color: var(--accent-2);
  animation: rotateHint 2.4s ease-in-out infinite;
}
.rotate-title {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin: 8px 0 0;
}
.rotate-sub { color: var(--text-muted); font-size: 1rem; margin: 0; max-width: 320px; line-height: 1.6; }
.rotate-sub strong { color: var(--accent-2); }
@keyframes rotateHint {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-25deg); }
  75% { transform: rotate(90deg); }
}

/* ---------- HUD ---------- */
.hud { position: absolute; inset: 0; z-index: 10; pointer-events: none; }
.hud.hidden { display: none; }
.hud-top-left, .hud-top-right, .hud-top-center {
  position: absolute; top: calc(16px + var(--safe-top));
}
.hud-top-left { left: calc(16px + var(--safe-left)); }
.hud-top-right { right: calc(16px + var(--safe-right)); text-align: right; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.hud-top-center { left: 50%; transform: translateX(-50%); text-align: center; }
.speed-readout {
  background: rgba(10,14,26,0.55); border: 1px solid var(--line); border-radius: 12px;
  padding: 8px 14px; font-family: 'Orbitron', sans-serif;
}
.speed-readout span { font-size: 1.6rem; font-weight: 800; }
.speed-readout small { font-size: 0.65rem; color: var(--text-muted); margin-left: 4px; }
.health-readout {
  margin-top: 8px; background: rgba(10,14,26,0.55); border: 1px solid var(--line); border-radius: 12px;
  padding: 6px 12px; font-family: 'Orbitron', sans-serif; color: var(--accent-2);
}
.health-readout span { font-size: 1.1rem; font-weight: 800; }
.health-readout small { font-size: 0.65rem; color: var(--text-muted); margin-left: 4px; }
.hud-lap {
  background: rgba(10,14,26,0.55); border: 1px solid var(--line); border-radius: 12px;
  padding: 8px 16px; font-weight: 700; letter-spacing: 1px; font-size: 1.05rem;
}
.hud-checkpoints { display: flex; gap: 4px; margin-top: 6px; justify-content: center; }
.hud-checkpoints .cp-dot {
  width: 8px; height: 8px; border-radius: 50%; background: rgba(255,255,255,0.25);
}
.hud-checkpoints .cp-dot.done { background: var(--accent-2); }
.hud-timer {
  background: rgba(10,14,26,0.55); border: 1px solid var(--line); border-radius: 12px;
  padding: 8px 14px; font-family: 'Orbitron', sans-serif; font-size: 1.3rem; font-weight: 700;
}
.hud-best { margin-top: 6px; font-size: 0.78rem; color: var(--text-muted); }
.hud-pause {
  pointer-events: auto;
}
.hud-message {
  position: absolute; top: 38%; left: 50%; transform: translate(-50%, -50%);
  font-family: 'Orbitron', sans-serif; font-size: clamp(1.6rem, 5vw, 2.6rem);
  font-weight: 800; color: var(--accent-3); text-shadow: 0 0 24px rgba(0,0,0,0.6);
  opacity: 0; transition: opacity 0.2s ease;
}
.hud-message.show { opacity: 1; }

/* ---------- Touch controls ---------- */
#touch-controls { position: absolute; inset: 0; z-index: 15; pointer-events: none; }
#touch-controls.hidden { display: none; }
.touch-btn {
  pointer-events: auto;
  -webkit-user-select: none; user-select: none;
  border: none;
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  font-size: 1.6rem;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(3px);
  touch-action: none;
}
.touch-btn.pressed { background: rgba(255, 93, 58, 0.45); border-color: var(--accent); }
.touch-steer {
  position: absolute; left: calc(18px + var(--safe-left)); bottom: calc(18px + var(--safe-bottom));
  display: flex; gap: 14px;
}
.touch-steer-btn { width: 70px; height: 70px; border-radius: 50%; }
.touch-pedals {
  position: absolute; right: calc(18px + var(--safe-right)); bottom: calc(18px + var(--safe-bottom));
  display: flex; flex-direction: column; gap: 12px;
}
.touch-pedal { width: 76px; height: 76px; border-radius: 50%; }
.touch-gas { background: rgba(47, 230, 193, 0.18); border-color: rgba(47,230,193,0.4); }
.touch-gas.pressed { background: rgba(47, 230, 193, 0.5); }
.touch-brake { background: rgba(255, 68, 87, 0.15); border-color: rgba(255,68,87,0.35); }
.touch-brake.pressed { background: rgba(255, 68, 87, 0.5); }

/* ---------- Pause / results ---------- */
.pause-title, #results-heading {
  text-align: center; font-size: 1.8rem; margin-bottom: 18px; letter-spacing: 1px;
}
.pause-sub {
  text-align: center; color: var(--muted, #9aa4b8); font-size: 0.9rem; margin: -8px 0 18px;
  letter-spacing: 0.3px;
}
.results-panel {
  background: linear-gradient(160deg, rgba(18,26,46,0.92), rgba(10,14,26,0.92));
  border: 1px solid var(--line); border-radius: 18px;
  padding: 30px; max-width: 380px; width: 90%; text-align: center;
}
.results-time {
  font-family: 'Orbitron', sans-serif; font-size: 2.4rem; font-weight: 800; color: var(--accent-3);
  margin-bottom: 10px;
}
.results-badge {
  display: inline-block; background: var(--accent-2); color: #08201b; font-weight: 800;
  padding: 5px 14px; border-radius: 999px; font-size: 0.8rem; letter-spacing: 1px; margin-bottom: 10px;
}
.results-badge.hidden { display: none; }
.results-stars { font-size: 2rem; letter-spacing: 6px; color: var(--accent-3); margin-bottom: 12px; }
.results-unlock { color: var(--accent-2); font-weight: 700; margin-bottom: 16px; }
.results-unlock.hidden { display: none; }

/* ---------- Confirm dialog ---------- */
.confirm-box {
  background: var(--bg-panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px; max-width: 320px; text-align: center; pointer-events: auto;
}
.confirm-actions { display: flex; gap: 10px; margin-top: 16px; }
.confirm-actions .btn { flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .screen { padding: calc(16px + var(--safe-top)) calc(14px + var(--safe-right)) calc(16px + var(--safe-bottom)) calc(14px + var(--safe-left)); }
  .screen-menu.active { align-items: stretch; }
  .menu-panel { max-width: none; }
  .touch-steer-btn { width: 62px; height: 62px; font-size: 1.3rem; }
  .touch-pedal { width: 66px; height: 66px; font-size: 1.3rem; }
  .hud-checkpoints { display: none; }
  .hud-top-center { top: calc(12px + var(--safe-top)); }
  .hud-lap { font-size: 0.9rem; padding: 6px 12px; }
  .info-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-height: 420px) and (orientation: landscape) {
  .menu-panel { padding: 16px 20px; }
  .game-title { font-size: 1.8rem; }
  .menu-nav { flex-direction: row; flex-wrap: wrap; }
  .menu-nav .btn { flex: 1 1 45%; padding: 10px; font-size: 0.9rem; }
}

/* Hide native scrollbars on overflow screens but keep scroll working */
.screen::-webkit-scrollbar { width: 6px; }
.screen::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }

@media (prefers-reduced-motion: reduce) {
  #countdown-number { animation: none; }
  .btn, .track-card { transition: none; }
  .rotate-icon { animation: none; }
}

/* ---------- Mobile: landscape-only UI ---------- */
@media (orientation: portrait) and (pointer: coarse) {
  /* Show the rotate prompt and hide the game UI when held in portrait on touch devices */
  #rotate-overlay { display: flex; }
  #rotate-overlay.hidden { display: flex; }
}
@media (orientation: landscape) {
  #rotate-overlay { display: none; }
}

@media (max-width: 640px) {
  .menu-fullscreen { top: calc(10px + var(--safe-top)); right: calc(10px + var(--safe-right)); }
}