/* ============================================================
   GenerateRacer – game stylesheet
   ============================================================ */

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: 'Segoe UI', Arial, sans-serif;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

/* ---- Canvas ---- */
#gameCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ---- Utility ---- */
.hidden {
  display: none !important;
}

/* ============================================================
   HUD
   ============================================================ */
#hud {
  position: fixed;
  inset: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

/* Second player HUD (splitscreen) */
#hud2 {
  position: fixed;
  top: 0;
  left: 50%;
  right: 0;
  bottom: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: stretch;
}

/* In splitscreen, restrict player-1 HUD to the left half */
body.splitscreen #hud {
  right: 50%;
}

.hud-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 12px 20px;
  gap: 12px;
}

.hud-pill {
  background: rgba(0, 0, 0, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  padding: 6px 14px;
  color: #fff;
  text-shadow: 0 1px 3px #000;
  backdrop-filter: blur(4px);
}

#hud-position {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  min-width: 3ch;
  text-align: center;
}

#hud-lap {
  font-size: 1.1rem;
  font-weight: 600;
}

#hud-time {
  font-size: 1.1rem;
  font-variant-numeric: tabular-nums;
}

.hud-speedbox {
  text-align: right;
}

#hud-speed {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  display: block;
}

.hud-unit {
  font-size: 0.75rem;
  opacity: 0.7;
}

#hud-bestlap {
  font-size: 0.8rem;
  opacity: 0.6;
}

/* Turbo / shoot indicator pills */
.hud-turbo,
.hud-shoot {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.3px;
}

/* When used as interactive buttons */
button.hud-turbo,
button.hud-shoot {
  font: inherit;
  cursor: pointer;
  touch-action: none;
  transition: opacity 0.1s, transform 0.1s;
}

button.hud-turbo:hover,
button.hud-shoot:hover {
  opacity: 0.85;
}

button.hud-turbo:active,
button.hud-shoot:active {
  opacity: 0.7;
  transform: scale(0.95);
}

button.hud-turbo-charging,
button.hud-shoot-charging {
  cursor: default;
}

button.hud-turbo-charging:hover,
button.hud-shoot-charging:hover,
button.hud-turbo-charging:active,
button.hud-shoot-charging:active {
  opacity: 1;
  transform: none;
}

.hud-turbo-active  { color: #ffe000; border-color: #ffe000; background: rgba(255,180,0,0.25); }
.hud-turbo-charging { color: #888; }
.hud-turbo-ready   { color: #6f6; }

.hud-shoot-charging { color: #888; }
.hud-shoot-ready    { color: #f96; }

/* ============================================================
   Touch D-pad controls
   ============================================================ */
#touchControls {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 180px;
  pointer-events: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 0 24px 24px;
}

.touch-side {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  pointer-events: auto;
}

.touch-btn {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  border: 2.5px solid rgba(255, 255, 255, 0.45);
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  touch-action: none;
  pointer-events: auto;
  transition: background 0.1s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.touch-btn:active,
.touch-btn.pressed {
  background: rgba(255, 255, 255, 0.45);
}

#btn-gas {
  background: rgba(0, 200, 60, 0.28);
  border-color: rgba(0, 200, 60, 0.6);
}

#btn-brake {
  background: rgba(220, 40, 40, 0.28);
  border-color: rgba(220, 40, 40, 0.6);
}

/* ============================================================
   Overlay panels (menus, results)
   ============================================================ */
.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, 0.55);
}

.panel {
  background: rgba(15, 15, 20, 0.92);
  border: 1.5px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  padding: 36px 44px;
  text-align: center;
  color: #fff;
  max-width: 460px;
  max-height: calc(100vh - 40px);
  width: 100%;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
}

.panel h1 {
  font-size: 3rem;
  margin-bottom: 6px;
  letter-spacing: -1px;
}

.panel .subtitle {
  font-size: 1rem;
  opacity: 0.6;
  margin-bottom: 28px;
}

.panel h2 {
  font-size: 1.8rem;
  margin-bottom: 24px;
}

/* Buttons */
.btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  margin: 10px 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  background: #c0392b;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  letter-spacing: 0.5px;
}

.btn:hover { background: #a93226; }
.btn:active { transform: scale(0.97); }

.btn.secondary {
  background: rgba(255, 255, 255, 0.1);
}
.btn.secondary:hover { background: rgba(255, 255, 255, 0.2); }

.btn.green  { background: #27ae60; }
.btn.green:hover { background: #1e8449; }

/* Multiplayer status */
#multiStatus {
  min-height: 44px;
  padding: 10px 14px;
  margin: 12px 0;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  font-size: 0.85rem;
  text-align: left;
  white-space: pre-wrap;
  line-height: 1.5;
}

textarea {
  width: 100%;
  height: 72px;
  margin: 6px 0;
  background: #111;
  color: #4fc;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 8px 10px;
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  resize: none;
}

textarea::placeholder {
  color: #555;
}

/* QR code sharing section */
.sdp-actions {
  margin: 8px 0 4px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.9rem;
  margin: 4px 0 8px;
}

.qr-container {
  display: flex;
  justify-content: center;
  margin: 8px 0 4px;
  line-height: 0;
}

.qr-container canvas {
  border-radius: 8px;
  border: 4px solid #fff;
}

.qr-hint {
  font-size: 0.7rem;
  opacity: 0.5;
  margin: 0 0 6px;
  text-align: center;
}

/* ============================================================
   Countdown
   ============================================================ */
#countdown {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

#countdownNum {
  font-size: min(25vw, 220px);
  font-weight: 900;
  color: #ff4444;
  text-shadow: 0 0 40px rgba(255, 68, 68, 0.6), 0 4px 12px rgba(0, 0, 0, 0.9);
  animation: pulse 0.9s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1);    opacity: 1; }
  50%       { transform: scale(1.12); opacity: 0.85; }
}

/* ============================================================
   Race-over results
   ============================================================ */
#results {
  text-align: left;
  margin: 0 0 20px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.result-row {
  display: grid;
  grid-template-columns: 3.5rem 5rem 1fr;
  gap: 4px;
  align-items: center;
  padding: 9px 12px;
  font-size: 0.9rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.result-row:last-child { border-bottom: none; }
.result-row:nth-child(odd)  { background: rgba(255,255,255,0.03); }
.result-row:nth-child(even) { background: rgba(255,255,255,0.065); }
.result-row.result-human    { background: rgba(100,200,255,0.12); }

.result-row .pos  { font-weight: 800; font-size: 1rem; }
.result-row .name { font-weight: 700; }
.result-row .info { font-size: 0.78rem; opacity: 0.7; }

/* ============================================================
   Keyboard hint (bottom centre, desktop only)
   ============================================================ */
#keyHint {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.4);
  font-size: 0.75rem;
  pointer-events: none;
}

/* ============================================================
   Main menu – GitHub links & version
   ============================================================ */
.menu-links {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
}

.menu-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  transition: background 0.15s, transform 0.1s;
}

.menu-link-btn:active { transform: scale(0.96); }

.star-btn {
  background: rgba(255, 210, 0, 0.18);
  border: 1px solid rgba(255, 210, 0, 0.45);
  color: #ffd700;
}

.star-btn:hover {
  background: rgba(255, 210, 0, 0.3);
}

.source-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.85);
}

.source-btn:hover {
  background: rgba(255, 255, 255, 0.18);
}

.menu-version {
  margin-top: 10px;
  font-size: 0.7rem;
  opacity: 0.3;
  letter-spacing: 0.4px;
}

/* ============================================================
   Responsive adjustments
   ============================================================ */

/* Large touch screens / tablets in portrait */
@media (max-width: 600px) {
  .panel {
    padding: 24px 20px;
  }
  .panel h1 { font-size: 2.2rem; }
  .touch-btn { width: 68px; height: 68px; font-size: 1.5rem; }
}

/* Wide screens (Tesla MCU, desktop) */
@media (min-width: 1400px) {
  .touch-btn { width: 90px; height: 90px; }
  #hud-position { font-size: 3.5rem; }
  #hud-speed    { font-size: 3.5rem; }
}

/* Landscape phone: compact HUD */
@media (max-height: 420px) {
  .hud-top { padding: 6px 12px; }
  #hud-position, #hud-speed { font-size: 2rem; }
  #touchControls { height: 120px; padding: 0 16px 12px; }
  .touch-btn { width: 60px; height: 60px; font-size: 1.3rem; }
}