:root {
  --bg: #07101d;
  --panel: rgba(15, 23, 42, 0.82);
  --panel-2: rgba(18, 30, 54, 0.92);
  --border: rgba(255, 255, 255, 0.08);
  --text: #edf3ff;
  --muted: #92a0ba;
  --accent: #72a8ff;
  --accent-2: #45d6a8;
  --danger: #ff6b7f;
  --shadow: 0 22px 50px rgba(0, 0, 0, 0.28);
}
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&family=Righteous&display=swap');
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Nunito", "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(114,168,255,0.15), transparent 28%), linear-gradient(180deg, var(--bg), #040914 72%);
}
.app-shell { display: grid; grid-template-columns: 260px 1fr; min-height: 100vh; }
.sidebar { padding: 24px; border-right: 1px solid var(--border); background: rgba(7, 12, 24, 0.45); backdrop-filter: blur(14px); }
.brand { display: flex; gap: 14px; align-items: center; margin-bottom: 28px; }
.brand-icon { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; background: linear-gradient(180deg, #8fe9ff, #4aa3ff 55%, #2563eb); color: #fff; font-weight: 900; font-size: 1.4rem; }
.brand h1 { margin: 0; font-family: "Righteous", "Trebuchet MS", sans-serif; text-transform: uppercase; }
.nav { display: grid; gap: 10px; }
.nav-btn, .small-btn, .menu-btn, .game-select-btn {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 14px;
  padding: 13px 15px;
  cursor: pointer;
  box-shadow: var(--shadow);
  font-family: "Righteous", "Trebuchet MS", sans-serif;
  text-transform: uppercase;
}
.nav-btn.active, .game-select-btn.active { background: linear-gradient(135deg, var(--accent), #92baff); color: #06111f; }
.main-content { padding: 28px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 24px; box-shadow: var(--shadow); }
.hero-card, .game-card { padding: 24px; }
.eyebrow { margin: 0 0 8px; color: var(--accent-2); text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.8rem; font-weight: 700; }
.section-header { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 16px; flex-wrap: wrap; }
.home-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.game-selector { display: flex; gap: 10px; flex-wrap: wrap; }
.game-pane { display: none; }
.game-pane.active { display: block; }
.game-header-inline { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.game-tools { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.game-tools select { border-radius: 12px; border: 1px solid var(--border); background: var(--panel); color: var(--text); padding: 11px 12px; }
.tool-row { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 0.9rem; font-weight: 700; }
.settings-panel { border: 1px solid var(--border); border-radius: 12px; padding: 8px 10px; background: var(--panel); color: var(--text); font-size: 0.85rem; }
.settings-panel summary { cursor: pointer; list-style: none; font-weight: 700; color: var(--text); }
.settings-panel summary::-webkit-details-marker { display: none; }
.settings-grid { display: grid; gap: 8px; margin-top: 8px; }
.settings-grid label { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); }
.settings-grid input[type="checkbox"] { accent-color: var(--accent); }
.mini-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 12px 14px; min-width: 92px; }
.mini-card span { display: block; color: var(--muted); font-size: 0.78rem; margin-bottom: 6px; }
canvas { width: 100%; max-width: 760px; aspect-ratio: 1 / 1; display: block; margin: 0 auto; border-radius: 18px; background: #040a15; border: 1px solid rgba(255,255,255,0.06); touch-action: none; }
#tetrisCanvas { max-width: 320px; aspect-ratio: 1 / 2; }
#nextCanvas { max-width: 120px; aspect-ratio: 1 / 1; background: #0c1324; }
.touch-controls { display: none; margin: 18px auto 0; width: min(360px, 100%); gap: 12px; user-select: none; }
.touch-controls { touch-action: manipulation; }
.touch-label { text-align: center; color: var(--muted); font-size: 0.9rem; font-weight: 700; }
.touch-middle, .tetris-mobile-controls { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tetris-mobile-controls { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.hard-drop-btn { background: linear-gradient(135deg, #8b5cf6, #c084fc); }
.touch-btn { border: 1px solid var(--border); background: linear-gradient(135deg, var(--accent), #92baff); color: #06111f; border-radius: 20px; min-height: 72px; font-size: 1.7rem; font-weight: 900; box-shadow: var(--shadow); }
.touch-btn { touch-action: none; }
.touch-btn.is-pressed { filter: brightness(1.2); transform: translateY(1px) scale(0.98); box-shadow: inset 0 4px 12px rgba(0, 0, 0, 0.24); }
.touch-btn.up { display: block; width: calc(33.33% - 8px); min-width: 88px; margin: 0 auto; }
.touch-btn, .touch-btn:focus-visible { outline: none; }
.touch-btn:active { transform: translateY(1px); }
.helper-text { color: var(--muted); }
.action-row { margin-top: 16px; display: flex; gap: 12px; justify-content: center; }
.action-row.stacked { flex-direction: column; }
.tetris-layout { display: grid; grid-template-columns: minmax(0, 320px) 1fr; gap: 18px; align-items: start; }
.tetris-side { display: grid; gap: 16px; align-content: start; }
@media (max-width: 980px) { .app-shell { grid-template-columns: 1fr; } .sidebar { border-right: 0; border-bottom: 1px solid var(--border); } .nav { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) { .main-content, .sidebar { padding: 16px; } .nav, .home-actions, .tetris-layout { grid-template-columns: 1fr; } .touch-controls { display: grid; } .touch-btn { min-height: 78px; font-size: 1.9rem; } .controls-guide { min-width: 100%; } .game-tools { width: 100%; } }
@media (max-width: 380px) { .section-header { gap: 10px; } .game-tools { gap: 8px; } .tool-row span { font-size: 0.8rem; } .game-tools select { padding: 10px; } .touch-btn { min-height: 84px; font-size: 2rem; } .touch-middle, .tetris-mobile-controls { gap: 8px; } }

.game-card-wrap { position: relative; }
.game-overlay { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(3,8,20,0.62); border-radius: 24px; z-index: 5; }
.game-overlay.hidden { display: none; }
.overlay-panel { padding: 18px 24px; border-radius: 18px; background: rgba(15,23,42,0.92); border: 1px solid var(--border); box-shadow: var(--shadow); font-family: "Righteous", "Trebuchet MS", sans-serif; text-transform: uppercase; letter-spacing: 0.06em; }

.controls-guide { padding: 14px 16px; min-width: 260px; }
.controls-guide h3 { margin: 0 0 6px; }
.controls-guide p { margin: 0; color: var(--muted); font-size: 0.95rem; }

body.hide-pacman-hud #game-pacman .game-header-inline { display: none; }
body.hide-tetris-hud #game-tetris .game-header-inline { display: none; }