:root {
  --bg-0: #0f1020;
  --bg-1: #1a1b3a;
  --accent: #7c5cff;
  --accent-2: #ff5c8a;
  --accent-3: #29e0b5;
  --text: #f2f3ff;
  --muted: #a7a9c9;
  --card: rgba(255, 255, 255, 0.06);
  --card-border: rgba(255, 255, 255, 0.12);
}

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

html, body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 15% -10%, #2a2260 0%, transparent 55%),
    radial-gradient(1000px 700px at 100% 0%, #3a1f4d 0%, transparent 50%),
    linear-gradient(160deg, var(--bg-0), var(--bg-1));
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-tap-highlight-color: transparent;
}

.app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

.app-header {
  text-align: center;
  padding: 8px 0 20px;
}

.logo {
  font-size: 34px;
  letter-spacing: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

/* ===== 大厅卡片 ===== */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 8px;
}

@media (min-width: 560px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.game-card {
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 18px;
  padding: 20px 18px;
  color: var(--text);
  backdrop-filter: blur(8px);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 30px rgba(124, 92, 255, 0.28);
}

.game-card:active {
  transform: translateY(-1px);
}

.card-icon {
  font-size: 40px;
}

.game-card h2 {
  font-size: 19px;
}

.game-card p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  min-height: 38px;
}

.play-tag {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-3);
}

/* ===== 舞台 ===== */
.stage-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.stage-title {
  font-size: 18px;
  font-weight: 700;
}

.stage-info {
  display: flex;
  align-items: baseline;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--card-border);
  padding: 6px 14px;
  border-radius: 999px;
}

.score-label {
  font-size: 12px;
  color: var(--muted);
}

.score-value {
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-3);
  min-width: 28px;
  text-align: right;
}

.stage-body {
  position: relative;
  display: flex;
  justify-content: center;
}

canvas {
  width: 100%;
  max-width: 480px;
  height: auto;
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--card-border);
  touch-action: none;
  display: block;
}

.controls-hint {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 14px;
  line-height: 1.6;
}

/* ===== 覆盖层 ===== */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(8, 8, 20, 0.6);
  backdrop-filter: blur(4px);
  border-radius: 18px;
}

.overlay-card {
  text-align: center;
  padding: 28px 26px;
  background: rgba(26, 27, 58, 0.92);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  width: min(320px, 82%);
}

.overlay-card h2 {
  font-size: 24px;
  margin-bottom: 8px;
}

.overlay-card p {
  color: var(--muted);
  margin-bottom: 20px;
  font-size: 15px;
}

.overlay-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ===== 按钮 ===== */
.btn {
  cursor: pointer;
  border: none;
  border-radius: 12px;
  padding: 11px 18px;
  font-size: 15px;
  font-weight: 600;
  transition: transform 0.12s ease, opacity 0.12s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn.primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: white;
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
  border: 1px solid var(--card-border);
}

.hidden {
  display: none !important;
}