:root {
    --bg: #0a0a0f;
    --panel: #12121a;
    --border: #2a2a3a;
    --accent: #00ffcc;
    --glow: #00ffcc44;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }

  body {
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    font-family: 'Press Start 2P', monospace;
    color: #fff;
    overflow-x: hidden;
    padding-bottom: 16px;
  }

  /* Scanline effect */
  body::after {
    content: '';
    position: fixed;
    inset: 0;
    background: repeating-linear-gradient(
      0deg, transparent, transparent 2px,
      rgba(0,0,0,0.08) 2px, rgba(0,0,0,0.08) 4px
    );
    pointer-events: none;
    z-index: 100;
  }

  /* ── STATS BAR (top, horizontal) ── */
  #stats-bar {
    display: flex;
    gap: 8px;
    padding: 10px 10px 0;
    width: 100%;
    max-width: 480px;
    justify-content: center;
  }
  .info-box {
    flex: 1;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 4px;
    text-align: center;
  }
  .info-box .lbl {
    font-size: 6px;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 5px;
    display: block;
  }
  .info-box .val {
    font-size: 11px;
    color: #fff;
    letter-spacing: 1px;
  }

  /* ── MIDDLE ROW: canvas + side panels ── */
  #middle-row {
    display: flex;
    gap: 6px;
    align-items: flex-start;
    padding: 8px 6px 0;
    width: 100%;
    max-width: 480px;
    justify-content: center;
    overflow: hidden;
  }

  /* MAIN CANVAS */
  #main-canvas-wrap {
    position: relative;
    flex-shrink: 0;
  }
  #game-canvas {
    display: block;
    border: 2px solid var(--accent);
    box-shadow: 0 0 20px var(--glow), inset 0 0 20px rgba(0,255,204,0.03);
    border-radius: 4px;
    image-rendering: pixelated;
  }

  /* SIDE PANEL (next + hold + keys) */
  #side-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 80px;
    flex-shrink: 0;
    min-width: 0;
    overflow: hidden;
  }
  .side-box {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px;
    text-align: center;
  }
  .side-box .lbl {
    font-size: 5px;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 4px;
    display: block;
  }
  #next-canvas, #hold-canvas {
    display: block;
    border-radius: 3px;
    background: #0d0d14;
    margin: 0 auto;
    max-width: 100%;
  }
  .keys-box {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 7px 5px;
    font-size: 5px;
    color: #555;
    line-height: 2.1;
    letter-spacing: 0.3px;
    text-align: left;
  }
  .keys-box span { color: var(--accent); }

  /* ── OVERLAY ── */
  #overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.82);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    border-radius: 4px;
    z-index: 10;
  }
  #overlay h1 {
    font-size: 18px;
    color: var(--accent);
    text-shadow: 0 0 20px var(--accent);
    text-align: center;
    line-height: 1.6;
  }
  #overlay .sub {
    font-size: 7px;
    color: #888;
    text-align: center;
    line-height: 2.2;
  }
  #start-btn {
    background: transparent;
    border: 2px solid var(--accent);
    color: var(--accent);
    font-family: 'Press Start 2P', monospace;
    font-size: 10px;
    padding: 12px 24px;
    cursor: pointer;
    border-radius: 4px;
    letter-spacing: 1px;
    transition: all 0.2s;
    box-shadow: 0 0 10px var(--glow);
  }
  #start-btn:hover { background: var(--accent); color: #000; box-shadow: 0 0 25px var(--accent); }

  /* Score flash */
  @keyframes scoreFlash { 0% { color:#fff; transform:scale(1.3); } 100% { color:#fff; transform:scale(1); } }
  .flash { animation: scoreFlash 0.3s ease; }

  /* ── MOBILE CONTROLS (always below canvas) ── */
  #mobile-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 7px;
    padding: 10px 10px 0;
    width: 100%;
    max-width: 340px;
  }
  .mob-row { display: flex; gap: 7px; justify-content: center; }
  .mob-btn {
    width: 60px;
    height: 60px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--accent);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
    -webkit-user-select: none;
    transition: background 0.1s, box-shadow 0.1s;
    touch-action: manipulation;
    box-shadow: 0 3px 0 #000;
  }
  .mob-btn:active { background: #1a2e3a; box-shadow: 0 1px 0 #000; transform: translateY(2px); }
  .mob-btn.wide { width: 130px; font-size: 10px; font-family: 'Press Start 2P', monospace; letter-spacing: 1px; }

  /* Hide desktop keys hint on narrow screens, show on wide */
  @media (max-width: 500px) { .keys-box { display: none; } }

  /* On very wide screens, center nicely */
  @media (min-width: 700px) {
    body { justify-content: center; }
  }

  nav {
    width: 100%; background: rgba(10,10,18,0.95); backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0,255,204,0.15); padding: 0 16px;
    position: sticky; top: 0; z-index: 50;
  }
  .nav-inner {
    max-width: 480px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between; height: 52px;
  }
  .back-btn {
    display: flex; align-items: center; gap: 6px;
    color: #556; text-decoration: none; font-weight: 700; font-size: 14px;
    transition: color .2s;
  }
  .back-btn:hover { color: var(--accent); }
  .nav-title { font-family: 'Press Start 2P', monospace; font-size: 13px; color: var(--accent); }

.seo-h2{font-family:'Fredoka One',sans-serif;font-size:1.1rem;color:#c8c8ff;margin:18px 0 8px;border-left:3px solid #7c6aff;padding-left:10px}
.seo-p{font-size:.82rem;color:#9999bb;line-height:1.8;margin-bottom:10px}
.seo-ul{font-size:.82rem;color:#9999bb;line-height:1.8;padding-left:18px;margin-bottom:10px}
.faq-item{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:12px 14px;margin-bottom:8px}
.faq-q{font-family:'Fredoka One',sans-serif;font-size:.82rem;color:#e8e8ff;font-weight:700;margin-bottom:6px}
.faq-a{font-size:.78rem;color:#8888aa;line-height:1.7}

.game-info-section{background:var(--bg2,#14141f);border-top:1px solid rgba(255,255,255,0.07);padding:3rem 1.5rem;margin-top:2rem}
.game-info-inner{max-width:860px;margin:0 auto}
.info-tabs{display:flex;gap:.5rem;margin-bottom:1.75rem;flex-wrap:wrap}
.info-tab{background:transparent;border:1px solid rgba(255,255,255,0.1);color:#888899;padding:.5rem 1.25rem;border-radius:20px;cursor:pointer;font-family:'Nunito',sans-serif;font-weight:700;font-size:.85rem;transition:all .2s}
.info-tab.active,.info-tab:hover{background:rgba(58,134,255,.15);border-color:rgba(58,134,255,.4);color:#f0f0f8}
.tab-content{display:none}.tab-content.active{display:block}
.game-info-section h2{font-size:1.15rem;font-weight:800;margin:1.5rem 0 .6rem;color:#f0f0f8}
.game-info-section h2:first-child{margin-top:0}
.game-info-section p{color:#b8b8cc;line-height:1.8;margin-bottom:.75rem;font-size:.92rem}
.game-info-section ul{padding-left:1.3rem;color:#b8b8cc;font-size:.92rem;line-height:2}
.game-info-section ul li strong{color:#f0f0f8}
.game-info-section details{border:1px solid rgba(255,255,255,0.08);border-radius:8px;padding:.6rem 1rem;margin-bottom:.5rem;cursor:pointer}
.game-info-section summary{font-weight:700;font-size:.88rem;color:#f0f0f8;cursor:pointer;list-style:none}
.game-info-section summary::-webkit-details-marker{display:none}
.game-info-section summary::before{content:"▶ ";color:#3a86ff;font-size:.75rem}
.game-info-section details[open] summary::before{content:"▼ "}
.game-info-section details p{margin:.6rem 0 0;font-size:.85rem}