* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #070a16;
  --panel: #10152b;
  --panel-2: #171d39;
  --text: #f7f8ff;
  --muted: #aab1d3;
  --blue: #4169ff;
  --blue-light: #7691ff;
  --yellow: #ffd84d;
  --border: #2b345f;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(65, 105, 255, 0.18), transparent 34rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-header {
  max-width: 1060px;
  margin: 0 auto;
  padding: 20px 18px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.app-header h1,
.app-header p {
  margin: 0;
}

.app-header h1 {
  font-size: clamp(1.55rem, 4vw, 2.4rem);
}

.app-header p {
  color: var(--muted);
  margin-top: 4px;
}

.app-shell {
  width: min(100%, 1060px);
  margin: 0 auto;
  padding: 12px 18px 32px;
}

.game-panel {
  background: rgba(16, 21, 43, 0.92);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.scorebar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
  padding: 12px 14px;
  background: var(--panel-2);
  border-radius: 14px;
  color: var(--muted);
}

.scorebar strong {
  color: var(--yellow);
}

.canvas-wrap {
  position: relative;
  width: min(100%, 672px);
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid #263272;
  background: #000;
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  touch-action: none;
  background: #000;
}

.game-overlay {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  background: rgba(2, 4, 16, 0.72);
  backdrop-filter: blur(4px);
  padding: 18px;
}

.game-overlay.visible {
  display: grid;
}

.overlay-card {
  width: min(100%, 360px);
  text-align: center;
  background: rgba(16, 21, 43, 0.97);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px 20px;
}

.overlay-card h2 {
  margin: 0 0 8px;
}

.overlay-card p {
  color: var(--muted);
  line-height: 1.5;
}

.primary-button,
.secondary-button,
.ghost-button,
.file-button,
.icon-button,
.flip-button {
  border: 0;
  border-radius: 12px;
  padding: 11px 16px;
  font-weight: 700;
}

.primary-button {
  background: var(--yellow);
  color: #1c1600;
}

.primary-button:disabled,
.flip-button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.secondary-button,
.file-button {
  background: var(--blue);
  color: white;
}

.secondary-button:hover,
.file-button:hover {
  background: var(--blue-light);
}

.ghost-button,
.icon-button {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.flip-button {
  width: 100%;
  background: #252d55;
  color: var(--text);
  border: 1px solid #46518b;
}

.flip-button.active {
  background: var(--yellow);
  border-color: var(--yellow);
  color: #171100;
}

.icon-button {
  padding: 8px 11px;
}

.editor-actions {
  display: flex;
  justify-content: center;
}

.touch-controls {
  display: none;
  margin: 18px auto 6px;
  width: 220px;
  text-align: center;
}

.touch-controls button {
  width: 62px;
  height: 54px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--panel-2);
  color: white;
  font-size: 1.2rem;
}

.touch-controls-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 10px;
}

.instructions {
  color: var(--muted);
  text-align: center;
  margin: 14px 0 0;
  font-size: 0.92rem;
}

.setup-dialog {
  width: min(94vw, 820px);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
}

.setup-dialog::backdrop {
  background: rgba(0, 0, 0, 0.76);
  backdrop-filter: blur(5px);
}

.setup-card {
  padding: 22px;
}

.setup-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.setup-header h2,
.setup-header p {
  margin: 0;
}

.setup-header p {
  color: var(--muted);
  margin-top: 6px;
}

.setup-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 24px;
}

.source-panel,
.editor-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.file-button {
  display: block;
  text-align: center;
}

.file-button input {
  display: none;
}

.camera-preview {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 14px;
  background: #000;
  border: 1px solid var(--border);
}

.face-preview {
  width: min(100%, 300px);
  margin: 0 auto;
  border-radius: 50%;
  overflow: hidden;
  border: 5px solid var(--yellow);
  background: #080b18;
}

#faceCanvas {
  display: block;
  width: 100%;
  height: auto;
}

.editor-panel label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
}

.editor-panel input[type="range"] {
  width: 100%;
}

.tips {
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: var(--muted);
  padding: 12px;
  border-radius: 12px;
  background: var(--panel-2);
  line-height: 1.4;
}

.hidden {
  display: none !important;
}

@media (pointer: coarse), (max-width: 760px) {
  .touch-controls {
    display: block;
  }

  .setup-grid {
    grid-template-columns: 1fr;
  }

  .setup-dialog {
    max-height: 92vh;
    overflow: auto;
  }

  .app-header {
    align-items: flex-start;
  }
}

.header-actions { display:flex; gap:10px; align-items:center; flex-wrap:wrap; }