@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Share+Tech+Mono&display=swap');

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

  :root {
    --void: #03010a;
    --deep: #080420;
    --nebula-a: #1a0538;
    --nebula-b: #04122e;
    --star: #e8f4fd;
    --accent: #00d4ff;
    --accent2: #bd00ff;
    --gold: #ffd700;
    --glow: rgba(0,212,255,0.4);
    --font-display: 'Orbitron', monospace;
    --font-mono: 'Share Tech Mono', monospace;
  }

  html, body {
    width: 100%; height: 100%;
    overflow: hidden;
    background: var(--void);
    color: var(--star);
    font-family: var(--font-mono);
    touch-action: none;
  }

  /* ---- STARFIELD ---- */
  #starfield {
    position: fixed; inset: 0; z-index: 0;
    overflow: hidden; pointer-events: none;
  }
  .star-dot {
    position: absolute; border-radius: 50%;
    background: white; opacity: 0;
    animation: twinkle linear infinite;
  }
  @keyframes twinkle {
    0%   { opacity: 0; transform: translateY(0); }
    10%  { opacity: 1; }
    90%  { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-20px); }
  }

  /* ---- SCREENS ---- */
  .screen {
    position: fixed; inset: 0; z-index: 10;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    transition: opacity 0.5s ease;
  }
  .screen.hidden { opacity: 0; pointer-events: none; }

  /* ---- HOME SCREEN ---- */
  #home-screen {
    background: radial-gradient(ellipse at 50% 30%, #1a053860 0%, #04122e40 50%, transparent 80%),
                radial-gradient(ellipse at 80% 70%, #04122e50 0%, transparent 60%);
    justify-content: space-between;
    padding: 0;
  }
  .home-content {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 2rem 1.5rem;
    gap: 2rem;
  }
  .logo-wrap {
    display: flex; flex-direction: column; align-items: center; gap: 0.4rem;
  }
  .logo-title {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 10vw, 4.5rem);
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--accent) 0%, #ffffff 50%, var(--accent2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 24px var(--accent));
    animation: pulse-title 3s ease-in-out infinite;
  }
  @keyframes pulse-title {
    0%,100% { filter: drop-shadow(0 0 16px var(--accent)); }
    50%      { filter: drop-shadow(0 0 36px var(--accent)) drop-shadow(0 0 60px var(--accent2)); }
  }
  .logo-sub {
    font-family: var(--font-mono);
    font-size: clamp(0.7rem, 2.5vw, 0.95rem);
    letter-spacing: 0.3em;
    color: rgba(232,244,253,0.55);
    text-transform: uppercase;
  }

  .planet-container {
    position: relative; width: 140px; height: 140px;
    animation: float 4s ease-in-out infinite;
  }
  @keyframes float {
    0%,100% { transform: translateY(0); }
    50%      { transform: translateY(-16px); }
  }
  .planet {
    width: 120px; height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #3d9be9 0%, #1a4fa0 40%, #08173d 100%);
    box-shadow: 0 0 40px rgba(61,155,233,0.4), inset -20px -10px 30px rgba(0,0,30,0.6);
    position: absolute; top: 10px; left: 10px;
  }
  .planet::before {
    content: '';
    position: absolute; inset: -2px;
    border-radius: 50%;
    background: conic-gradient(transparent 60%, rgba(0,212,255,0.15) 80%, transparent 100%);
    animation: orbit-ring 6s linear infinite;
  }
  @keyframes orbit-ring { to { transform: rotate(360deg); } }
  .ring {
    position: absolute;
    width: 140px; height: 28px;
    border-radius: 50%;
    border: 3px solid rgba(0,212,255,0.35);
    top: 56px; left: 0;
    transform: rotateX(70deg);
    box-shadow: 0 0 12px rgba(0,212,255,0.2);
  }

  .desc-text {
    text-align: center;
    font-size: clamp(0.8rem, 2.8vw, 1rem);
    color: rgba(232,244,253,0.65);
    line-height: 1.7;
    max-width: 320px;
  }
  .desc-text span { color: var(--accent); }

  .btn-play {
    font-family: var(--font-display);
    font-size: clamp(1rem, 4vw, 1.2rem);
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--void);
    background: linear-gradient(135deg, var(--accent) 0%, #0099cc 100%);
    border: none; border-radius: 4px;
    padding: 1rem 3rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 30px var(--glow), 0 0 60px rgba(0,212,255,0.2);
    transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
  }
  .btn-play::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.4s;
  }
  .btn-play:active { transform: scale(0.96); }
  .btn-play:hover::before { transform: translateX(100%); }
  .btn-play:hover { box-shadow: 0 0 50px var(--glow), 0 0 90px rgba(0,212,255,0.3); }

  .best-score {
    font-size: 0.8rem;
    color: rgba(232,244,253,0.4);
    letter-spacing: 0.15em;
  }
  .best-score span { color: var(--gold); }

  .home-footer {
    width: 100%;
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(0,212,255,0.1);
    display: flex;
    justify-content: center;
    gap: 2rem;
    background: rgba(3,1,10,0.5);
  }
  .home-footer a {
    color: rgba(232,244,253,0.35);
    text-decoration: none;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: color 0.2s;
  }
  .home-footer a:hover { color: var(--accent); }

  /* ---- CANVAS SCREEN ---- */
  #game-screen { background: var(--void); }

  #game-canvas {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    display: block;
    touch-action: none;
  }

  .hud {
    position: absolute; top: 0; left: 0; right: 0;
    padding: 0.75rem 1.2rem;
    display: flex; justify-content: space-between; align-items: center;
    pointer-events: none;
    z-index: 20;
    background: linear-gradient(to bottom, rgba(3,1,10,0.7) 0%, transparent 100%);
  }
  .hud-score {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 4vw, 1.4rem);
    font-weight: 700;
    color: var(--accent);
    text-shadow: 0 0 12px var(--accent);
  }
  .hud-label {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: rgba(232,244,253,0.4);
    display: block;
  }
  .hud-right { text-align: right; }
  .hud-combo {
    font-family: var(--font-display);
    font-size: clamp(0.85rem, 3vw, 1.1rem);
    font-weight: 700;
    color: var(--gold);
    text-shadow: 0 0 10px rgba(255,215,0,0.6);
    transition: opacity 0.3s;
  }

  .pause-btn {
    position: absolute; top: 0.6rem; left: 50%; transform: translateX(-50%);
    z-index: 25;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(0,212,255,0.2);
    color: rgba(232,244,253,0.5);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    padding: 0.3rem 0.8rem;
    border-radius: 3px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: color 0.2s, border-color 0.2s;
  }
  .pause-btn:hover { color: var(--accent); border-color: var(--accent); }

  /* ---- PAUSE / RESULT OVERLAY ---- */
  .overlay {
    position: fixed; inset: 0; z-index: 50;
    background: rgba(3,1,10,0.88);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 1.5rem;
    transition: opacity 0.3s;
    backdrop-filter: blur(6px);
  }
  .overlay.hidden { opacity: 0; pointer-events: none; }
  .overlay-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 7vw, 2.8rem);
    font-weight: 900;
    letter-spacing: 0.1em;
    background: linear-gradient(135deg, var(--accent), #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
  }
  .overlay-stats {
    display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
    font-size: 0.9rem; color: rgba(232,244,253,0.6);
  }
  .overlay-stats strong { color: var(--star); font-family: var(--font-display); font-size: 1.1rem; }
  .btn-sm {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 700;
    letter-spacing: 0.18em; text-transform: uppercase;
    padding: 0.75rem 2rem; border-radius: 3px; cursor: pointer;
    border: none; transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
  }
  .btn-sm:active { transform: scale(0.95); }
  .btn-primary { background: linear-gradient(135deg, var(--accent), #0099cc); color: var(--void); box-shadow: 0 0 24px var(--glow); }
  .btn-ghost { background: transparent; color: rgba(232,244,253,0.5); border: 1px solid rgba(232,244,253,0.2); }
  .btn-ghost:hover { color: var(--star); border-color: var(--star); }
  .btn-row { display: flex; gap: 1rem; }

  /* ---- LEGAL PAGES ---- */
  #legal-screen {
    background: var(--void);
    overflow-y: auto; overflow-x: hidden;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 0;
  }
  .legal-inner {
    max-width: 600px; width: 100%;
    margin: 0 auto;
    padding: 2rem 1.5rem 4rem;
  }
  .legal-back {
    background: none; border: none; cursor: pointer;
    color: var(--accent); font-family: var(--font-mono);
    font-size: 0.85rem; letter-spacing: 0.1em;
    margin-bottom: 2rem; padding: 0;
    display: flex; align-items: center; gap: 0.4rem;
    -webkit-tap-highlight-color: transparent;
  }
  .legal-back:hover { text-decoration: underline; }
  .legal-h1 {
    font-family: var(--font-display); font-size: clamp(1.4rem, 5vw, 1.9rem);
    font-weight: 900; letter-spacing: 0.08em;
    color: var(--star); margin-bottom: 0.3rem;
  }
  .legal-date { font-size: 0.75rem; color: rgba(232,244,253,0.35); letter-spacing: 0.1em; margin-bottom: 2rem; }
  .legal-inner h2 {
    font-family: var(--font-display); font-size: 0.9rem; font-weight: 700;
    letter-spacing: 0.15em; color: var(--accent);
    margin: 2rem 0 0.6rem; text-transform: uppercase;
  }
  .legal-inner p {
    font-size: 0.88rem; line-height: 1.75;
    color: rgba(232,244,253,0.65);
    margin-bottom: 0.8rem;
  }
  .legal-inner ul {
    padding-left: 1.2rem; margin-bottom: 0.8rem;
  }
  .legal-inner li {
    font-size: 0.88rem; line-height: 1.75;
    color: rgba(232,244,253,0.65); margin-bottom: 0.3rem;
  }
  .legal-divider { border: none; border-top: 1px solid rgba(0,212,255,0.1); margin: 2rem 0; }