*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  :root {
    --p1: #ff7a18;
    --p1-deep: #c0392b;
    --p1-glow: rgba(255, 122, 24, 0.7);
    --p2: #18c5ff;
    --p2-deep: #0084b8;
    --p2-glow: rgba(24, 197, 255, 0.7);
    --accent: #ffd84d;
    --accent-glow: rgba(255, 216, 77, 0.7);
    --bg: #060818;
    --bg-2: #0d1230;
    --bg-rgb: 6, 8, 24;
    --board: linear-gradient(170deg, #1a2152 0%, #0d1230 50%, #060818 100%);
    --cell: radial-gradient(circle at 30% 30%, #060818 0%, #000 80%);
    --surface: linear-gradient(170deg, #1a2152 0%, #0d1230 60%, #060818 100%);
    --surface-rgb: 13, 18, 48;
    --text: #f0f4ff;
    --text-dim: #7e88b9;
    --stage-glow-1: rgba(60, 30, 110, 0.6);
    --stage-glow-2: rgba(180, 60, 30, 0.4);
    --conic-1: rgba(78, 84, 200, 0.10);
    --conic-2: rgba(155, 81, 224, 0.10);
    --conic-3: rgba(0, 212, 255, 0.10);
    --board-glow: rgba(120, 80, 200, 0.4);
    --chip-1-avatar: radial-gradient(circle at 30% 30%, #ffd084, var(--p1) 60%, var(--p1-deep));
    --chip-2-avatar: radial-gradient(circle at 30% 30%, #b3eaff, var(--p2) 60%, var(--p2-deep));
    --disc-1: radial-gradient(circle at 30% 30%, #ffcb88 0%, var(--p1) 35%, var(--p1-deep) 100%);
    --disc-2: radial-gradient(circle at 30% 30%, #b3eaff 0%, var(--p2) 35%, var(--p2-deep) 100%);
  }

  /* ============ THEMES ============ */
  [data-theme="retro"] {
    --p1: #ff2e97; --p1-deep: #9c1f68; --p1-glow: rgba(255, 46, 151, 0.7);
    --p2: #00e5ff; --p2-deep: #0096b3; --p2-glow: rgba(0, 229, 255, 0.7);
    --accent: #ffe66d; --accent-glow: rgba(255, 230, 109, 0.7);
    --bg: #14002e; --bg-2: #2a0a54; --bg-rgb: 20, 0, 46;
    --board: linear-gradient(170deg, #3a0d6e 0%, #22084a 50%, #14002e 100%);
    --cell: radial-gradient(circle at 30% 30%, #0d0022 0%, #000 80%);
    --surface: linear-gradient(170deg, #3a0d6e 0%, #22084a 60%, #14002e 100%);
    --surface-rgb: 42, 10, 84;
    --text: #ffeef8; --text-dim: #c49ad9;
    --stage-glow-1: rgba(120, 30, 180, 0.6); --stage-glow-2: rgba(255, 46, 151, 0.35);
    --conic-1: rgba(255, 46, 151, 0.10); --conic-2: rgba(120, 60, 255, 0.12); --conic-3: rgba(0, 229, 255, 0.10);
    --board-glow: rgba(255, 46, 151, 0.35);
  }
  [data-theme="candy"] {
    --p1: #ff5fa2; --p1-deep: #c2326f; --p1-glow: rgba(255, 95, 162, 0.7);
    --p2: #7dd3fc; --p2-deep: #3b8fc2; --p2-glow: rgba(125, 211, 252, 0.7);
    --accent: #ffd166; --accent-glow: rgba(255, 209, 102, 0.7);
    --bg: #1c0a2e; --bg-2: #342052; --bg-rgb: 28, 10, 46;
    --board: linear-gradient(170deg, #4a2a6e 0%, #2c1746 50%, #1c0a2e 100%);
    --cell: radial-gradient(circle at 30% 30%, #15062a 0%, #000 80%);
    --surface: linear-gradient(170deg, #4a2a6e 0%, #2c1746 60%, #1c0a2e 100%);
    --surface-rgb: 52, 32, 82;
    --text: #fff1f6; --text-dim: #c9a6d8;
    --stage-glow-1: rgba(255, 95, 162, 0.35); --stage-glow-2: rgba(125, 211, 252, 0.35);
    --conic-1: rgba(255, 95, 162, 0.10); --conic-2: rgba(255, 209, 102, 0.10); --conic-3: rgba(125, 211, 252, 0.10);
    --board-glow: rgba(255, 95, 162, 0.35);
  }
  [data-theme="ocean"] {
    --p1: #ffb703; --p1-deep: #c97f00; --p1-glow: rgba(255, 183, 3, 0.7);
    --p2: #06d6a0; --p2-deep: #009b74; --p2-glow: rgba(6, 214, 160, 0.7);
    --accent: #90e0ef; --accent-glow: rgba(144, 224, 239, 0.7);
    --bg: #00182b; --bg-2: #083a55; --bg-rgb: 0, 24, 43;
    --board: linear-gradient(170deg, #0d4a66 0%, #063a52 50%, #00182b 100%);
    --cell: radial-gradient(circle at 30% 30%, #00101f 0%, #000 80%);
    --surface: linear-gradient(170deg, #0d4a66 0%, #063a52 60%, #00182b 100%);
    --surface-rgb: 8, 58, 85;
    --text: #e9fbff; --text-dim: #8fb7c9;
    --stage-glow-1: rgba(6, 214, 160, 0.35); --stage-glow-2: rgba(255, 183, 3, 0.30);
    --conic-1: rgba(6, 214, 160, 0.10); --conic-2: rgba(144, 224, 239, 0.10); --conic-3: rgba(255, 183, 3, 0.10);
    --board-glow: rgba(6, 214, 160, 0.35);
  }
  [data-theme="royal"] {
    --p1: #c084fc; --p1-deep: #7c3aed; --p1-glow: rgba(192, 132, 252, 0.7);
    --p2: #fbbf24; --p2-deep: #b45309; --p2-glow: rgba(251, 191, 36, 0.7);
    --accent: #ffffff; --accent-glow: rgba(255, 255, 255, 0.6);
    --bg: #0a0a1a; --bg-2: #1e1b4b; --bg-rgb: 10, 10, 26;
    --board: linear-gradient(170deg, #312e81 0%, #1e1b4b 50%, #0a0a1a 100%);
    --cell: radial-gradient(circle at 30% 30%, #05040f 0%, #000 80%);
    --surface: linear-gradient(170deg, #312e81 0%, #1e1b4b 60%, #0a0a1a 100%);
    --surface-rgb: 30, 27, 75;
    --text: #f5f3ff; --text-dim: #a5b4fc;
    --stage-glow-1: rgba(192, 132, 252, 0.4); --stage-glow-2: rgba(251, 191, 36, 0.25);
    --conic-1: rgba(192, 132, 252, 0.10); --conic-2: rgba(251, 191, 36, 0.10); --conic-3: rgba(255, 255, 255, 0.08);
    --board-glow: rgba(192, 132, 252, 0.4);
  }
  html, body {
    min-height: 100vh; height: 100%;
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--text);
    background: var(--bg);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    user-select: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
  }

  /* ===================== ANIMATED STAGE BACKGROUND ===================== */
  .stage {
    position: fixed; inset: 0;
    z-index: 0;
    background:
      radial-gradient(ellipse at 50% 30%, var(--stage-glow-1) 0%, transparent 60%),
      radial-gradient(ellipse at 50% 90%, var(--stage-glow-2) 0%, transparent 60%),
      var(--bg);
    overflow: hidden;
  }
  .stage::before {
    content: "";
    position: absolute; inset: -50%;
    background: conic-gradient(from 0deg at 50% 50%,
      var(--conic-1) 0deg,
      var(--conic-2) 120deg,
      var(--conic-3) 240deg,
      var(--conic-1) 360deg);
    filter: blur(80px);
    animation: spin 40s linear infinite;
  }
  .stage::after {
    /* Animated grid floor */
    content: "";
    position: absolute; inset: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at 50% 70%, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 70%, black 0%, transparent 70%);
    animation: gridmove 12s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }
  @keyframes gridmove {
    from { background-position: 0 0, 0 0; }
    to { background-position: 60px 60px, 60px 60px; }
  }

  /* ===================== SCREEN SYSTEM ===================== */
  .screen {
    position: fixed; inset: 0;
    z-index: 10;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    transition: opacity 0.4s ease, transform 0.4s ease;
    padding: 24px;
  }
  .screen.hidden {
    opacity: 0; pointer-events: none;
    transform: scale(1.05);
  }

/* ===================== TITLE SCREEN (refined) ===================== */
#titleScreen { background: transparent; padding: 24px; }
.legacy-setup { display: none !important; }

.menu-frame {
  position: relative;
  width: min(720px, 92vw);
  padding: 46px 44px 32px;
  background: rgba(13, 18, 48, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 28px;
  backdrop-filter: blur(28px) saturate(120%);
  -webkit-backdrop-filter: blur(28px) saturate(120%);
  box-shadow:
    0 40px 100px -20px rgba(0, 0, 0, 0.85),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 1px 0 rgba(255, 255, 255, 0.06) inset,
    0 0 80px -20px rgba(var(--surface-rgb), 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
  text-align: center;
  animation: menu-rise 0.7s cubic-bezier(0.2, 0.85, 0.3, 1);
  will-change: transform, opacity;
}
@keyframes menu-rise {
  0%   { opacity: 0; transform: translateY(22px) scale(0.985); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.menu-kicker {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 6px;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0.85;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.menu-kicker::before, .menu-kicker::after {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 216, 77, 0.55), transparent);
}

.menu-logo {
  font-family: 'Bungee', 'Space Grotesk', sans-serif;
  font-size: clamp(56px, 9.5vw, 116px);
  letter-spacing: -1.5px;
  line-height: 0.94;
  margin: 2px 0 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--accent) 60%, var(--p1) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 4px 0 rgba(0, 0, 0, 0.55)) drop-shadow(0 0 28px rgba(255, 216, 77, 0.3));
  animation: logo-glow 4.5s ease-in-out infinite;
  position: relative;
}
@keyframes logo-glow {
  0%, 100% { filter: drop-shadow(0 4px 0 rgba(0,0,0,0.55)) drop-shadow(0 0 22px rgba(255, 216, 77, 0.22)); }
  50%      { filter: drop-shadow(0 4px 0 rgba(0,0,0,0.55)) drop-shadow(0 0 46px rgba(255, 216, 77, 0.5)); }
}
.menu-logo-dot {
  display: inline-block;
  width: 0.18em; height: 0.18em;
  background: var(--p1);
  border-radius: 50%;
  vertical-align: top;
  margin: 0.18em 0 0 0.04em;
  box-shadow: 0 0 12px var(--p1-glow);
  animation: menu-dot 2.6s ease-in-out infinite;
}
@keyframes menu-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.55; transform: scale(0.65); }
}

.menu-tagline {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  letter-spacing: 8px;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 600;
}
.menu-tagline i {
  display: inline-block;
  width: 5px; height: 5px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.6;
  box-shadow: 0 0 6px var(--accent-glow);
}

.menu-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  width: 100%;
  margin-top: 4px;
}

.play-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: 'Bungee', 'Space Grotesk', sans-serif;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 4px;
  padding: 18px 42px 18px 28px;
  border: none;
  border-radius: 100px;
  color: #0a0e27;
  cursor: pointer;
  background: linear-gradient(135deg, var(--p1) 0%, var(--accent) 55%, #ffe19a 100%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.35) inset,
    0 0 60px rgba(255, 153, 0, 0.55),
    0 12px 30px rgba(0, 0, 0, 0.6),
    0 4px 0 rgba(0, 0, 0, 0.45);
  transition: transform 0.18s cubic-bezier(.2,.9,.3,1.3), box-shadow 0.25s, filter 0.2s;
  overflow: hidden;
  isolation: isolate;
}
.play-btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.55) 50%, transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.6s;
  z-index: -1;
}
.play-btn:hover {
  transform: translateY(-3px) scale(1.02);
  filter: brightness(1.05);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.5) inset,
    0 0 90px rgba(255, 153, 0, 0.8),
    0 16px 40px rgba(0, 0, 0, 0.7),
    0 4px 0 rgba(0, 0, 0, 0.45);
}
.play-btn:hover::before { transform: translateX(120%); }
.play-btn:active { transform: translateY(1px) scale(0.99); }
.play-btn-icon { width: 1.05em; height: 1.05em; flex-shrink: 0; }

.menu-pill {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  padding: 8px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: min(560px, 90%);
  text-align: center;
  transition: background 0.2s, border-color 0.2s, transform 0.18s;
}
.menu-pill:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(255, 216, 77, 0.32); transform: translateY(-1px); }

.menu-row {
  display: flex;
  gap: 12px;
  margin-top: 4px;
}
.menu-icon-btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 11px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, transform 0.15s, color 0.2s;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.menu-icon-btn svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.85; transition: opacity 0.2s, transform 0.2s; }
.menu-icon-btn:hover {
  background: rgba(255, 216, 77, 0.08);
  border-color: rgba(255, 216, 77, 0.45);
  color: var(--accent);
  transform: translateY(-2px);
}
.menu-icon-btn:hover svg { opacity: 1; transform: rotate(8deg); }

.menu-settings {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  width: min(100%, 560px);
  margin-top: 2px;
}
.menu-setting-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
}
.menu-setting-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--text-dim);
  opacity: 0.85;
}
.menu-settings .menu-setting-group .seg {
  width: 100%;
  min-width: 250px;
}

.menu-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  justify-content: center;
  margin-top: 8px;
  flex-wrap: wrap;
}
.menu-version {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 4px 9px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.07);
}
.menu-mark {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--text-dim);
  opacity: 0.72;
}

@media (max-height: 760px) {
  .menu-frame { padding: 30px 36px 22px; gap: 16px; }
  .menu-logo { font-size: clamp(46px, 8vw, 88px); }
  .menu-cta { gap: 14px; }
  .menu-tagline i { opacity: 0.45; }
}
@media (max-height: 620px) {
  .menu-frame { padding: 22px 30px 18px; gap: 12px; }
  .menu-tagline { letter-spacing: 6px; }
  .play-btn { padding: 14px 36px 14px 22px; font-size: 19px; }
  .menu-foot { margin-top: 4px; }
}
@media (max-width: 540px) {
  .menu-frame { padding: 32px 24px 22px; gap: 18px; }
  .menu-logo { font-size: clamp(46px, 11vw, 80px); }
  .menu-kicker { font-size: 10px; letter-spacing: 4px; }
  .menu-kicker::before, .menu-kicker::after { width: 16px; }
  .menu-tagline { gap: 8px; letter-spacing: 5px; font-size: 11px; }
  .menu-foot { flex-direction: column; gap: 6px; }
  .menu-row { gap: 8px; }
  .menu-icon-btn { padding: 10px 14px; font-size: 11px; letter-spacing: 1.5px; }
  .menu-settings { gap: 18px; }
  .menu-settings .menu-setting-group .seg { min-width: 0; width: 220px; }
  .menu-settings .theme-swatch { width: 36px; height: 36px; }
}
  /* ===================== GAME SCREEN ===================== */
  #gameScreen {
    background: transparent;
    justify-content: flex-start;
    overflow-y: auto;
  }
  .top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 880px;
    padding: 8px 70px;
    margin-bottom: 20px;
  }
  .top-btn {
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    cursor: pointer;
    display: grid; place-items: center;
    transition: all 0.2s;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .top-btn:hover { background: rgba(255, 255, 255, 0.12); transform: translateY(-2px); }
  .top-btn svg { width: 20px; height: 20px; }
  .fs-btn {
    position: fixed;
    top: 18px;
    right: 18px;
    z-index: 100;
  }
  .top-title {
    font-family: 'Space Grotesk';
    font-weight: 700;
    font-size: 18px;
    letter-spacing: 2px;
    background: linear-gradient(90deg, #fff, var(--accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  /* ===================== PLAYER HUD CHIPS ===================== */
  .hud {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 18px;
    width: 100%;
    max-width: 880px;
    align-items: center;
    margin-bottom: 22px;
  }
  .chip {
    display: flex; align-items: center;
    gap: 14px;
    padding: 14px 20px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 2px solid transparent;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
  }
  .chip.p1 { justify-self: end; }
  .chip.p2 { justify-self: start; }
  .chip.active.p1 { border-color: var(--p1); background: rgba(255, 122, 24, 0.08); box-shadow: 0 0 40px rgba(255, 122, 24, 0.3); }
  .chip.active.p2 { border-color: var(--p2); background: rgba(24, 197, 255, 0.08); box-shadow: 0 0 40px rgba(24, 197, 255, 0.3); }
  .chip.disabled { opacity: 0.45; }
  .chip-avatar {
    width: 52px; height: 52px;
    border-radius: 50%;
    flex-shrink: 0;
    display: grid; place-items: center;
    font-family: 'Space Grotesk';
    font-weight: 700; font-size: 22px;
    color: #1a1a2e;
  }
  .chip.p1 .chip-avatar { background: var(--chip-1-avatar); box-shadow: inset 0 -3px 6px rgba(0,0,0,0.3), 0 0 24px var(--p1-glow); }
  .chip.p2 .chip-avatar { background: var(--chip-2-avatar); box-shadow: inset 0 -3px 6px rgba(0,0,0,0.3), 0 0 24px var(--p2-glow); color: #0a1a2e; }
  .chip-info { display: flex; flex-direction: column; }
  .chip-name {
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
  }
  .chip.p1 .chip-name { color: var(--p1); }
  .chip.p2 .chip-name { color: var(--p2); }
  .chip-status {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 2px;
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
  }
  .chip.active .chip-status { color: var(--accent); }

  .vs-badge {
    font-family: 'Bungee', 'Space Grotesk', sans-serif;
    font-size: 26px;
    background: linear-gradient(135deg, var(--p1), var(--p2));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    transform: rotate(-8deg);
    letter-spacing: 1px;
  }

  /* ===================== HERO BOARD ===================== */
  .board-area {
    position: relative;
    width: 100%;
    max-width: 820px;
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  .board {
    position: relative;
    width: 100%;
    aspect-ratio: var(--board-ar, 7 / 6);
    max-height: 100%;
    background: var(--board);
    border-radius: 28px;
    padding: 14px;
    box-shadow:
      0 0 0 2px rgba(255, 255, 255, 0.06),
      0 0 0 6px rgba(0, 0, 0, 0.4),
      0 40px 100px -20px rgba(0, 0, 0, 0.8),
      0 20px 60px -10px rgba(120, 80, 200, 0.5),
      inset 0 2px 0 rgba(255, 255, 255, 0.08);
    transform-style: preserve-3d;
  }
  .board.shake { animation: shake 0.45s; }
  @keyframes shake {
    0%, 100% { transform: translate(0,0); }
    20% { transform: translate(-10px, 4px); }
    40% { transform: translate(10px, -4px); }
    60% { transform: translate(-8px, 8px); }
    80% { transform: translate(8px, -2px); }
  }
  .board::before {
    content: "";
    position: absolute; inset: 0;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, transparent 30%);
    pointer-events: none;
  }
  .board::after {
    content: "";
    position: absolute;
    left: 0; right: 0; bottom: -30px;
    height: 60px;
    background: radial-gradient(ellipse at center, var(--board-glow) 0%, transparent 60%);
    filter: blur(20px);
    z-index: -1;
    pointer-events: none;
  }

  .cell.can-drop { cursor: pointer; }
  .cell.can-drop::after {
    content: "";
    position: absolute;
    inset: 5px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, currentColor 0%, transparent 75%);
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.18s, transform 0.18s;
    pointer-events: none;
  }
  .cell.can-drop:hover::after { opacity: 0.85; transform: scale(1); }

  .grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-auto-rows: 1fr;
    gap: 8px;
    width: 100%;
    height: 100%;
  }
  .cell {
    aspect-ratio: 1 / 1;
    width: 100%;
    height: auto;
    border-radius: 50%;
    background: var(--cell);
    box-shadow:
      inset 0 6px 12px rgba(0, 0, 0, 0.7),
      inset 0 -2px 4px rgba(255, 255, 255, 0.03),
      0 2px 4px rgba(0, 0, 0, 0.4);
    position: relative;
  }
  @media (max-width: 720px) {
    .grid { gap: 6px; }
  }
  @media (max-width: 460px) {
    .grid { gap: 5px; }
    .chip { padding: 10px 14px; }
    .chip-avatar { width: 40px; height: 40px; font-size: 16px; }
  }

  @media (max-height: 840px) {
    .screen { padding: 12px 24px; }
    .top-bar { margin-bottom: 8px; }
    .hud { margin-bottom: 10px; }
    .chip { padding: 10px 16px; }
    .chip-avatar { width: 44px; height: 44px; font-size: 18px; }
    .board { padding: 10px; }
    .grid { gap: 6px; }
    .ticker { margin-top: 12px; padding: 10px 20px; }
    .kbd-row { margin-top: 8px; }
  }
  @media (max-height: 700px) {
    .screen { padding: 8px 20px; }
    .chip { padding: 8px 12px; gap: 10px; }
    .chip-avatar { width: 38px; height: 38px; font-size: 16px; }
    .board { padding: 8px; border-radius: 20px; }
    .grid { gap: 5px; }
    .top-btn { width: 38px; height: 38px; }
    .ticker { margin-top: 8px; padding: 8px 16px; font-size: 14px; }
    .kbd-row { display: none; }
  }

  .disc {
    position: absolute;
    inset: 5px;
    border-radius: 50%;
    opacity: 1;
    transform: scale(1);
    pointer-events: none;
    will-change: transform;
  }
  .disc.placed {
    transform: scale(1);
    animation: disc-pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes disc-pop {
    0% { transform: translateY(0) scale(0.6); }
    100% { transform: translateY(0) scale(1); }
  }
  .disc[data-player="1"] {
    background: var(--disc-1);
    box-shadow:
      inset 0 -5px 10px rgba(0, 0, 0, 0.4),
      inset 0 3px 6px rgba(255, 255, 255, 0.5),
      0 6px 16px var(--p1-glow);
  }
  .disc[data-player="2"] {
    background: var(--disc-2);
    box-shadow:
      inset 0 -5px 10px rgba(0, 0, 0, 0.4),
      inset 0 3px 6px rgba(255, 255, 255, 0.5),
      0 6px 16px var(--p2-glow);
  }
  .disc::after {
    content: "";
    position: absolute;
    top: 10%; left: 18%;
    width: 22%; height: 22%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.9), transparent 70%);
    filter: blur(3px);
  }

  .cell.winning { z-index: 5; }
  .cell.winning .disc { animation: winning-pulse 1.4s ease-in-out infinite; }
  @keyframes winning-pulse {
    0%, 100% { filter: brightness(1) drop-shadow(0 0 12px var(--p1-glow)); }
    50% { filter: brightness(1.4) drop-shadow(0 0 32px var(--accent-glow)); }
  }
  .cell.winning[data-player="2"] .disc {
    animation: winning-pulse-blue 1.4s ease-in-out infinite;
  }
  @keyframes winning-pulse-blue {
    0%, 100% { filter: brightness(1) drop-shadow(0 0 12px var(--p2-glow)); }
    50% { filter: brightness(1.4) drop-shadow(0 0 32px var(--p2-glow)); }
  }

  /* ===================== SCORE TICKER ===================== */
  .ticker {
    display: flex; align-items: center; gap: 24px;
    margin-top: 24px;
    padding: 14px 28px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 100px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    font-family: 'Space Grotesk';
    font-weight: 700;
    font-size: 16px;
    letter-spacing: 1px;
  }
  .ticker-pill {
    display: flex; align-items: center; gap: 10px;
  }
  .ticker-pill .dot { width: 14px; height: 14px; border-radius: 50%; }
  .ticker-pill.p1 .dot { background: var(--p1); box-shadow: 0 0 12px var(--p1-glow); }
  .ticker-pill.p2 .dot { background: var(--p2); box-shadow: 0 0 12px var(--p2-glow); }
  .ticker-score { font-size: 20px; min-width: 24px; text-align: center; color: white; }
  .ticker-vs { color: var(--text-dim); font-weight: 500; }
  .ticker-divider { width: 1px; height: 24px; background: rgba(255, 255, 255, 0.1); }
  .match-pips {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding-left: 24px;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
  }
  .match-pips .pips-side { display: flex; gap: 5px; }
  .match-pips .pip {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    transition: background 0.25s, box-shadow 0.25s;
  }
  .match-pips .pip.lit.p1 { background: var(--p1); box-shadow: 0 0 8px var(--p1-glow); }
  .match-pips .pip.lit.p2 { background: var(--p2); box-shadow: 0 0 8px var(--p2-glow); }
  .match-pips .pips-label { font-size: 8px; letter-spacing: 1.5px; color: var(--text-dim); font-weight: 700; }

  /* ===================== COUNTDOWN ===================== */
  .countdown {
    position: absolute;
    inset: 0; z-index: 30;
    display: grid; place-items: center;
    background: rgba(var(--bg-rgb), 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 28px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
  }
  .countdown.show { opacity: 1; }
  .countdown-num {
    font-family: 'Bungee', sans-serif;
    font-size: 180px;
    color: var(--accent);
    text-shadow: 0 0 40px var(--accent-glow), 0 6px 0 var(--p1);
    animation: count-pop 0.7s ease-out;
  }
  @keyframes count-pop {
    0% { transform: scale(0.3) rotate(-15deg); opacity: 0; }
    50% { transform: scale(1.3) rotate(5deg); opacity: 1; }
    100% { transform: scale(1) rotate(0deg); opacity: 1; }
  }

  /* ===================== WIN OVERLAY ===================== */
  .win-overlay {
    position: fixed; inset: 0;
    z-index: 50;
    display: grid; place-items: center;
    background: rgba(var(--bg-rgb), 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.4s;
  }
  .win-overlay.show { opacity: 1; pointer-events: auto; }
  .win-card {
    text-align: center;
    animation: win-zoom 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  @keyframes win-zoom {
    0% { transform: scale(0.3) rotate(-20deg); opacity: 0; }
    100% { transform: scale(1) rotate(0); opacity: 1; }
  }
  .win-icon {
    font-size: 96px;
    filter: drop-shadow(0 0 30px var(--accent-glow));
    animation: icon-bounce 1s ease-in-out infinite;
  }
  @keyframes icon-bounce {
    0%, 100% { transform: translateY(0) rotate(-4deg); }
    50% { transform: translateY(-14px) rotate(4deg); }
  }
  .win-text {
    font-family: 'Bungee', sans-serif;
    font-size: clamp(48px, 9vw, 110px);
    line-height: 1;
    margin-top: 20px;
    background: linear-gradient(180deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 6px 0 rgba(255, 122, 24, 0.7)) drop-shadow(0 0 30px rgba(255, 216, 77, 0.5));
    letter-spacing: -1px;
  }
  .win-sub {
    font-family: 'Space Grotesk';
    font-size: 18px;
    color: var(--text);
    margin-top: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
  }
  .win-buttons {
    display: flex; gap: 14px;
    justify-content: center;
    margin-top: 40px;
  }
  .win-btn {
    font-family: 'Bungee', sans-serif;
    font-size: 18px;
    padding: 16px 36px;
    border-radius: 100px;
    border: none;
    cursor: pointer;
    letter-spacing: 2px;
    transition: transform 0.15s;
  }
  .win-btn.primary {
    background: linear-gradient(135deg, var(--p1), var(--accent));
    color: #0a0e27;
    box-shadow: 0 8px 0 rgba(0,0,0,0.4), 0 0 40px var(--accent-glow);
  }
  .win-btn.primary:hover { transform: translateY(-3px); box-shadow: 0 11px 0 rgba(0,0,0,0.5), 0 0 60px var(--accent-glow); }
  .win-btn.ghost {
    background: rgba(255, 255, 255, 0.08);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 0 rgba(0,0,0,0.4);
  }
  .win-btn.ghost:hover { background: rgba(255, 255, 255, 0.15); transform: translateY(-3px); }

  /* ===================== HELP MODAL ===================== */
  .modal-overlay {
    position: fixed; inset: 0;
    z-index: 70;
    display: grid; place-items: center;
    background: rgba(var(--bg-rgb), 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s;
  }
  .modal-overlay.show { opacity: 1; pointer-events: auto; }
  .modal-card {
    width: min(460px, 90vw);
    max-height: 85vh;
    overflow-y: auto;
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    padding: 34px 34px 30px;
    text-align: center;
    position: relative;
    box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.9), 0 0 60px rgba(120, 80, 200, 0.4);
    animation: win-zoom 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .modal-close {
    position: absolute; top: 14px; right: 14px;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text);
    font-size: 15px;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
  }
  .modal-close:hover { background: rgba(255, 255, 255, 0.16); transform: rotate(90deg); }
  .modal-title {
    font-family: 'Bungee', sans-serif;
    font-size: clamp(24px, 5vw, 34px);
    letter-spacing: 1px;
    margin-bottom: 24px;
    background: linear-gradient(180deg, #fff, var(--accent));
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
  }
  .modal-body {
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    line-height: 1.65;
    color: var(--text);
    text-align: left;
  }
  .modal-body p { margin-bottom: 14px; }
  .modal-body .rule {
    display: flex; align-items: flex-start; gap: 12px;
    margin-bottom: 16px;
  }
  .modal-body .rule-dot {
    flex-shrink: 0;
    width: 34px; height: 34px;
    border-radius: 50%;
    display: grid; place-items: center;
    font-family: 'Bungee', sans-serif;
    font-size: 16px;
    background: radial-gradient(circle at 30% 30%, #ffcb88 0%, var(--p1) 40%, var(--p1-deep) 100%);
    color: #1a1a2e;
  }
  .modal-body .rule-dot.blue {
    background: radial-gradient(circle at 30% 30%, #b3eaff 0%, var(--p2) 40%, var(--p2-deep) 100%);
  }
  .modal-body .rule-dot.yellow {
    background: radial-gradient(circle at 30% 30%, #fff3c4 0%, var(--accent) 40%, #e0a800 100%);
  }
  .modal-body .rule strong { color: var(--accent); }
  .modal-body .keys {
    display: inline-block;
    padding: 2px 8px;
    margin: 0 2px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    font-family: 'Space Grotesk', monospace;
    font-size: 13px;
  }
  .modal-gotit { margin-top: 24px; }
  @media (max-width: 520px) {
    .win-buttons { flex-wrap: wrap; }
    .win-btn { padding: 14px 22px; font-size: 15px; }
  }

  /* ===================== SETTINGS DRAWER ===================== */
  .drawer-backdrop {
    position: fixed; inset: 0;
    z-index: 60;
    background: rgba(var(--bg-rgb), 0.7);
    backdrop-filter: blur(8px);
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s;
  }
  .drawer-backdrop.open { opacity: 1; pointer-events: auto; }
  .drawer {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: min(380px, 90vw);
    background: var(--surface);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 61;
    padding: 30px;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex; flex-direction: column;
    gap: 24px;
    overflow-y: auto;
  }
  .drawer.open { transform: translateX(0); }
  .drawer-handle {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 10px;
  }
  .drawer-title {
    font-family: 'Bungee';
    font-size: 22px;
    color: var(--accent);
    letter-spacing: 1px;
  }
  .drawer-close {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    cursor: pointer;
    display: grid; place-items: center;
    font-size: 18px;
  }
  .drawer-close:hover { background: rgba(255, 255, 255, 0.12); }

  .setting-block {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 18px;
  }
  .setting-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
  }
  .theme-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }
  .theme-swatch {
    width: 46px; height: 46px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.14);
    cursor: pointer;
    position: relative;
    transition: transform 0.15s, border-color 0.2s, box-shadow 0.2s;
  }
  .theme-swatch:hover { transform: scale(1.12); }
  .theme-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 18px var(--accent-glow);
  }
  .theme-swatch::after {
    content: "";
    position: absolute;
    top: 50%; left: 50%;
    width: 42%; height: 42%;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(0, 0, 0, 0.45);
    background: #0a0a14;
  }
  .theme-swatch[data-theme="neon"]  { background: linear-gradient(135deg, #ff7a18 0 50%, #18c5ff 50% 100%); }
  .theme-swatch[data-theme="retro"] { background: linear-gradient(135deg, #ff2e97 0 50%, #00e5ff 50% 100%); }
  .theme-swatch[data-theme="candy"] { background: linear-gradient(135deg, #ff5fa2 0 50%, #7dd3fc 50% 100%); }
  .theme-swatch[data-theme="ocean"] { background: linear-gradient(135deg, #ffb703 0 50%, #06d6a0 50% 100%); }
  .theme-swatch[data-theme="royal"] { background: linear-gradient(135deg, #c084fc 0 50%, #fbbf24 50% 100%); }
  .seg {
    display: flex;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
  }
  .seg-btn {
    flex: 1;
    padding: 10px;
    border-radius: 7px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: inherit;
    font-weight: 600;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: 0.5px;
  }
  .seg-btn:hover { color: var(--text); }
  .seg-btn.active {
    background: var(--accent);
    color: #0a0e27;
  }
  .seg-btn.active.p1 { background: var(--p1); }
  .seg-btn.active.p2 { background: var(--p2); color: #0a1a2e; }

  .toggle-row {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 12px;
  }
  .toggle-row .label { font-weight: 600; font-size: 14px; }
  .toggle-row .desc { font-size: 12px; color: var(--text-dim); }
  .switch {
    position: relative;
    width: 48px; height: 26px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    cursor: pointer;
    transition: background 0.2s;
  }
  .switch::after {
    content: "";
    position: absolute;
    top: 3px; left: 3px;
    width: 20px; height: 20px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
  }
  .switch.on { background: var(--accent); }
  .switch.on::after { transform: translateX(22px); background: #0a0e27; }

  /* ===================== STATS & ACHIEVEMENTS ===================== */
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 14px;
  }
  .stat {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    padding: 10px 6px;
    text-align: center;
  }
  .stat-num {
    font-family: 'Space Grotesk';
    font-weight: 700;
    font-size: 20px;
    color: var(--accent);
  }
  .stat-label {
    font-size: 9px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-dim);
    margin-top: 3px;
    font-weight: 700;
  }
  .ach-list { display: flex; flex-direction: column; gap: 8px; }
  .ach {
    display: flex; align-items: center; gap: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 12px;
    padding: 9px 12px;
    transition: all 0.3s;
  }
  .ach.earned {
    border-color: rgba(255, 216, 77, 0.4);
    background: rgba(255, 216, 77, 0.06);
  }
  .ach.locked { opacity: 0.45; }
  .ach-icon { font-size: 22px; filter: grayscale(0); }
  .ach.locked .ach-icon { filter: grayscale(1); }
  .ach-meta { display: flex; flex-direction: column; }
  .ach-name { font-weight: 700; font-size: 13px; letter-spacing: 0.5px; }
  .ach.locked .ach-name { color: var(--text-dim); }
  .ach-desc { font-size: 11px; color: var(--text-dim); }

  /* ===================== ACHIEVEMENT TOAST ===================== */
  .ach-toast {
    position: fixed;
    top: 24px; left: 50%;
    transform: translateX(-50%) translateY(-140%);
    z-index: 90;
    display: flex; align-items: center; gap: 14px;
    padding: 14px 22px;
    background: var(--surface);
    border: 1px solid rgba(255, 216, 77, 0.5);
    border-radius: 18px;
    box-shadow: 0 20px 60px -10px rgba(0, 0, 0, 0.8), 0 0 40px var(--accent-glow);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s;
  }
  .ach-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
  }
  .ach-toast-icon {
    width: 48px; height: 48px;
    border-radius: 50%;
    display: grid; place-items: center;
    font-size: 26px;
    background: rgba(255, 216, 77, 0.15);
    border: 2px solid rgba(255, 216, 77, 0.5);
    animation: icon-bounce 0.8s ease-in-out infinite;
  }
  .ach-toast-title {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
  }
  .ach-toast-name {
    font-family: 'Space Grotesk';
    font-weight: 700;
    font-size: 17px;
    color: var(--text);
  }

  /* ===================== HINT BANNER (first play) ===================== */
  .hint-banner {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    color: var(--text-dim);
    text-align: center;
    letter-spacing: 1px;
    font-family: 'Space Grotesk';
    text-transform: uppercase;
    opacity: 0.85;
    white-space: nowrap;
    transition: color 0.25s, opacity 0.25s;
  }

  /* ===================== PARTICLES ===================== */
  .particles {
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 55;
    overflow: hidden;
  }
  .p {
    position: absolute;
    width: 12px; height: 12px;
    border-radius: 3px;
    will-change: transform, opacity;
  }
  .p.round { border-radius: 50%; }
  .p.stream {
    animation: stream 2.4s ease-in forwards;
  }
  @keyframes stream {
    0% { transform: translate(0,0) rotate(0); opacity: 1; }
    100% { transform: translate(var(--dx), 100vh) rotate(720deg); opacity: 0; }
  }

  /* ===================== KBD ===================== */
  .kbd-row {
    display: flex; gap: 6px; flex-wrap: wrap;
    justify-content: center;
    margin-top: 14px;
    font-size: 11px;
    color: var(--text-dim);
    font-family: 'Space Grotesk';
  }
  .kbd {
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    font-size: 10px;
  }

  /* ===================== AI THINKING ===================== */
  .chip.thinking.p2 { border-color: var(--p2); background: rgba(24, 197, 255, 0.08); }
  .chip.thinking .chip-status::after { content: "..."; animation: dots 1s steps(4, end) infinite; }
  @keyframes dots {
    0%, 20% { content: ""; }
    40% { content: "."; }
    60% { content: ".."; }
    80%, 100% { content: "..."; }
  }  /* ===================== LEVEL SELECT SCREEN (compact, single-viewport) ===================== */
  #levelSelectScreen {
    background: transparent;
    justify-content: flex-start;
    overflow: hidden;
    padding: 8px 14px 10px;
    gap: 6px;
  }

  /* Compact top row: back | progress chip | settings */
  .ls-top {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 40px minmax(0, 1fr) 40px;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    padding: 0 2px;
  }
  .ls-top .top-btn { width: 40px; height: 40px; border-radius: 11px; }
  .ls-top .top-btn svg { width: 18px; height: 18px; }

  /* Progress chip (now lives in the top row) */
  .ls-progress-wrap {
    width: 100%;
    padding: 7px 14px 8px;
    background: rgba(13, 18, 48, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    backdrop-filter: blur(14px) saturate(120%);
    -webkit-backdrop-filter: blur(14px) saturate(120%);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.04) inset,
                0 6px 18px -8px rgba(0,0,0,0.55);
  }
  #lsProgressText {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    color: var(--text);
    white-space: nowrap;
  }
  #lsHighestText {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--accent);
    text-align: right;
    white-space: nowrap;
  }
  .ls-progress-track {
    height: 6px;
    background: rgba(0, 0, 0, 0.45);
    border-radius: 100px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    min-width: 60px;
  }
  .ls-progress-fill {
    height: 100%;
    width: 4%;
    background: linear-gradient(90deg, #06d6a0 0%, var(--accent) 50%, var(--p1) 100%);
    border-radius: 100px;
    box-shadow: 0 0 12px var(--accent-glow);
    transition: width 0.6s cubic-bezier(0.2, 0.85, 0.3, 1);
    position: relative;
  }
  .ls-progress-fill::after {
    content: "";
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 26px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.5));
    border-radius: 100px;
    animation: progress-shine 2.4s ease-in-out infinite;
  }
  @keyframes progress-shine {
    0%, 100% { opacity: 0.35; }
    50%      { opacity: 0.85; }
  }

  /* The 5 difficulty bands, each carrying a row of 5 cards. Tight but readable. */
  .ls-bands {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 5px;
    flex: 1 1 auto;
    min-height: 0;
  }
  .ls-band {
    background: rgba(13, 18, 48, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 12px;
    padding: 5px 9px 7px;
    backdrop-filter: blur(14px) saturate(120%);
    -webkit-backdrop-filter: blur(14px) saturate(120%);
    box-shadow: 0 0 0 1px rgba(255,255,255,0.04) inset;
    position: relative;
    overflow: hidden;
    display: grid;
    grid-template-columns: 78px minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    min-height: 0;
  }
  .ls-band::before {
    content: "";
    position: absolute;
    left: 0; right: 0; top: 0;
    height: 2px;
    background: var(--ls-band-color, var(--accent));
    box-shadow: 0 0 10px var(--ls-band-color, var(--accent));
    opacity: 0.85;
  }
  .ls-band-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 1px;
    position: relative;
    z-index: 1;
  }
  .ls-band-name {
    font-family: 'Bungee', sans-serif;
    font-size: 11.5px;
    letter-spacing: 1px;
    color: var(--ls-band-color, var(--accent));
    text-shadow: 0 0 12px var(--ls-band-color, var(--accent));
    line-height: 1.05;
  }
  .ls-band-range {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.8px;
    color: var(--text-dim);
    text-transform: uppercase;
    line-height: 1.1;
    white-space: nowrap;
  }
  .ls-band-range.cleared { color: #06d6a0; opacity: 0.92; }
  .ls-band-range.active   { color: var(--accent); }
  .ls-levels {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 5px;
    min-width: 0;
    position: relative;
    z-index: 1;
  }

  /* Compact level card — number is the hero, board size tiny below */
  .ls-card {
    --ls-c: var(--accent);
    position: relative;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 9px;
    padding: 4px 2px 5px;
    text-align: center;
    cursor: pointer;
    transition: transform 0.18s cubic-bezier(.2,.9,.3,1.3),
                border-color 0.2s, background 0.2s,
                box-shadow 0.25s;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    min-height: 0;
    height: 100%;
  }
  .ls-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, var(--ls-c), transparent 70%);
    opacity: 0.16;
    pointer-events: none;
    transition: opacity 0.25s;
  }
  .ls-card::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    bottom: 0;
    height: 2px;
    background: var(--ls-c);
    opacity: 0.7;
    transition: opacity 0.2s, transform 0.25s;
    transform-origin: center;
  }
  .ls-card:hover {
    transform: translateY(-3px) scale(1.04);
    border-color: var(--ls-c);
    box-shadow: 0 0 0 1px rgba(255,255,255,0.06) inset,
                0 10px 22px -10px rgba(0,0,0,0.6),
                0 0 22px -4px var(--ls-c);
  }
  .ls-card:hover::after { opacity: 1; transform: scaleX(1.05); }
  .ls-card:hover::before { opacity: 0.45; }

  .ls-card.complete {
    border-color: rgba(255,216,77,0.4);
  }
  .ls-card.complete .ls-card-num { color: rgba(255, 255, 255, 0.7); }
  .ls-card.current {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px rgba(255,216,77,0.5) inset,
                0 4px 18px -6px rgba(255,216,77,0.55),
                0 0 22px -4px var(--accent);
    background: rgba(255,216,77,0.10);
  }
  .ls-card.current::before { opacity: 0.55; }

  .ls-card-num {
    font-family: 'Bungee', sans-serif;
    font-size: 17px;
    line-height: 1;
    color: #fff;
    text-shadow: 0 0 10px var(--ls-c);
    letter-spacing: 0.5px;
  }
  .ls-card-size {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 8px;
    font-weight: 700;
    letter-spacing: 0.4px;
    color: var(--text-dim);
    line-height: 1.1;
  }
  .ls-card-stage {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 7px;
    font-weight: 700;
    letter-spacing: 0.9px;
    text-transform: uppercase;
    color: var(--ls-c);
    line-height: 1.1;
  }
  .ls-card-target {
    /* Tiny target indicator on current level card only */
    font-size: 7px;
    letter-spacing: 0.7px;
    text-transform: uppercase;
    color: var(--text-dim);
    font-weight: 700;
    line-height: 1.1;
    display: none; /* keep card airy */
  }
  .ls-card-lock {
    /* Small badge in the corner instead of a full overlay so the
       level number + board size stay readable on locked tiles. */
    position: absolute;
    top: 3px; right: 3px;
    width: 14px; height: 14px;
    display: grid;
    place-items: center;
    color: rgba(255,255,255,0.55);
    z-index: 2;
    transition: color 0.2s, transform 0.2s;
  }
  .ls-card-lock svg {
    width: 11px; height: 11px;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.7));
  }
  .ls-card.locked {
    cursor: not-allowed;
  }
  .ls-card.locked .ls-card-num { opacity: 0.45; }
  .ls-card.locked .ls-card-stage { opacity: 0.4; }
  .ls-card.locked .ls-card-size { opacity: 0.4; }
  .ls-card.locked:hover {
    border-color: rgba(255,255,255,0.18);
    box-shadow: 0 0 0 1px rgba(255,255,255,0.05) inset;
  }
  .ls-card.locked:hover .ls-card-lock {
    color: var(--p1);
    transform: scale(1.18);
  }

  .ls-card.locked-shake {
    animation: ls-card-in 0.45s ease-out forwards, ls-shake 0.4s;
  }
  @keyframes ls-shake {
    0%, 100% { transform: translateX(0); }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(6px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
  }

  /* Band-specific colors */
  .ls-band.easy { --ls-band-color: #06d6a0; }
  .ls-band.medium { --ls-band-color: #ffd84d; }
  .ls-band.hard { --ls-band-color: #ff7a18; }
  .ls-band.expert { --ls-band-color: #ff5fa2; }
  .ls-band.impossible { --ls-band-color: #c084fc; }

  .ls-levels .ls-card[data-band="Easy"] { --ls-c: #06d6a0; }
  .ls-levels .ls-card[data-band="Medium"] { --ls-c: #ffd84d; }
  .ls-levels .ls-card[data-band="Hard"] { --ls-c: #ff7a18; }
  .ls-levels .ls-card[data-band="Expert"] { --ls-c: #ff5fa2; }
  .ls-levels .ls-card[data-band="Impossible"] { --ls-c: #c084fc; }

  /* Minimal footer: hint + buttons */
  .ls-foot {
    width: 100%;
    max-width: 1080px;
    margin: 2px auto 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-shrink: 0;
    padding: 0 4px;
  }
  .ls-foot-hint {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 9.5px;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--text-dim);
    text-transform: uppercase;
    flex: 1 1 auto;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .ls-foot-btns {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
  }
  .ls-foot-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 13px;
    border-radius: 100px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.11);
    color: var(--text);
    font-family: 'Bungee', sans-serif;
    font-size: 10.5px;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: transform 0.15s, background 0.2s, border-color 0.2s, color 0.2s;
  }
  .ls-foot-btn svg { width: 14px; height: 14px; }
  .ls-foot-btn:hover:not([disabled]) {
    background: rgba(255,216,77,0.08);
    border-color: rgba(255,216,77,0.45);
    color: var(--accent);
    transform: translateY(-2px);
  }
  .ls-foot-btn.primary:not([disabled]) {
    background: linear-gradient(135deg, var(--p1) 0%, var(--accent) 100%);
    color: #0a0e27;
    border-color: transparent;
    box-shadow: 0 4px 14px -4px var(--accent-glow),
                0 0 20px -4px var(--p1-glow);
  }
  .ls-foot-btn.primary:disabled {
    background: rgba(255,255,255,0.05);
    border: 1px dashed rgba(255,255,255,0.15);
    color: var(--text-dim);
    cursor: not-allowed;
    opacity: 0.55;
  }

  /* Animations */
  .ls-card { opacity: 0; transform: translateY(6px); animation: ls-card-in 0.45s ease-out forwards; }
  @keyframes ls-card-in {
    to { opacity: 1; transform: translateY(0); }
  }

  /* ============ Responsive: keep all 25 levels in view ============ */
  @media (max-height: 760px) {
    #levelSelectScreen { padding: 6px 12px 8px; gap: 4px; }
    .ls-band { padding: 4px 8px 6px; grid-template-columns: 68px minmax(0, 1fr); gap: 8px; }
    .ls-band-name { font-size: 10.5px; }
    .ls-band-range { font-size: 9px; letter-spacing: 0.7px; }
    .ls-levels { gap: 4px; }
    .ls-card { padding: 3px 2px 4px; border-radius: 8px; }
    .ls-card-num { font-size: 15px; }
    .ls-card-size { font-size: 7.5px; }
  }
  @media (max-height: 640px) {
    #levelSelectScreen { padding: 5px 10px 6px; gap: 3px; }
    .ls-top .top-btn { width: 36px; height: 36px; }
    .ls-top .top-btn svg { width: 16px; height: 16px; }
    .ls-progress-wrap { padding: 5px 11px 6px; gap: 10px; }
    #lsProgressText, #lsHighestText { font-size: 9.5px; letter-spacing: 1px; }
    .ls-bands { gap: 3px; }
    .ls-band { padding: 3px 7px 5px; grid-template-columns: 60px minmax(0, 1fr); gap: 7px; }
    .ls-band::before { height: 1.5px; }
    .ls-band-name { font-size: 10px; }
    .ls-band-range { font-size: 8.5px; letter-spacing: 0.6px; }
    .ls-levels { gap: 3px; }
    .ls-card { padding: 3px 2px 3px; border-radius: 7px; }
    .ls-card-num { font-size: 14px; }
    .ls-card-size { font-size: 7px; }
    .ls-card-stage { display: none; }
    .ls-card::after { height: 1.5px; }
    .ls-foot-hint { display: none; }
    .ls-foot { margin-top: 1px; }
    .ls-foot-btn { padding: 6px 11px; font-size: 9.5px; }
  }
  @media (max-height: 540px) {
    #levelSelectScreen { padding: 4px 8px 4px; gap: 3px; }
    .ls-bands { gap: 3px; }
    .ls-band { padding: 3px 6px 4px; gap: 6px; grid-template-columns: 54px minmax(0, 1fr); }
    .ls-levels { gap: 3px; }
    .ls-card-num { font-size: 13px; }
  }

  @media (max-width: 720px) {
    #levelSelectScreen { padding: 8px 10px 10px; }
    .ls-band { padding: 5px 8px 7px; grid-template-columns: 68px minmax(0, 1fr); }
    .ls-band-name { font-size: 10.5px; }
    .ls-band-range { font-size: 8.5px; letter-spacing: 0.6px; }
    .ls-levels { gap: 4px; }
    .ls-card-num { font-size: 15px; }
    .ls-progress-wrap { gap: 8px; padding: 6px 11px 7px; }
    #lsProgressText, #lsHighestText { font-size: 9.5px; letter-spacing: 1px; }
  }
  @media (max-width: 540px) {
    #levelSelectScreen { padding: 6px 8px 8px; gap: 4px; }
    .ls-top { grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 6px; }
    .ls-top .top-btn { width: 36px; height: 36px; }
    .ls-top .top-btn svg { width: 16px; height: 16px; }
    .ls-progress-wrap { padding: 5px 10px 6px; gap: 8px; border-radius: 10px; }
    #lsProgressText, #lsHighestText { font-size: 9px; letter-spacing: 0.9px; }
    .ls-progress-track { height: 5px; }
    .ls-bands { gap: 4px; }
    .ls-band { padding: 4px 7px 6px; grid-template-columns: 58px minmax(0, 1fr); gap: 6px; }
    .ls-band-name { font-size: 10px; }
    .ls-band-range { font-size: 8px; letter-spacing: 0.5px; }
    .ls-levels { gap: 3px; }
    .ls-card { padding: 3px 2px 4px; border-radius: 7px; }
    .ls-card-num { font-size: 13px; }
    .ls-card-size { font-size: 7px; }
    .ls-card-stage { display: none; }
    .ls-foot-hint { display: none; }
    .ls-foot-btn { padding: 6px 10px; font-size: 9px; letter-spacing: 1.2px; }
    .ls-foot-btn svg { width: 12px; height: 12px; }
  }