/* bitcointetris styles — Roblox-inspired voxel + chunky arcade */
:root {
  --cream: #fff7ea;
  --cream2: #ffe9c8;
  --ink: #2a1f12;
  --ink2: #4a3a25;
  --btc: #f7931a;
  --btc2: #ffb547;
  --sky: #5ac8ff;
  --mint: #7be495;
  --pink: #ff7a90;
  --purple: #c084fc;
  --yellow: #ffd23f;
  --shadow: 0 6px 0 rgba(0,0,0,.18), 0 2px 0 rgba(255,255,255,.6) inset;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Baloo 2", "Nunito", system-ui, -apple-system, sans-serif;
  background: var(--cream);
  color: var(--ink);
  background-image:
    radial-gradient(circle at 10% 10%, rgba(247,147,26,.08), transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(90,200,255,.10), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(123,228,149,.10), transparent 45%);
  min-height: 100vh;
}

/* ======= chunky 3D-ish "voxel" buttons ======= */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 20px; border: 3px solid var(--ink); border-radius: 14px;
  font-weight: 800; font-size: 16px; cursor: pointer;
  background: white; color: var(--ink);
  box-shadow: 0 5px 0 var(--ink), 0 8px 12px rgba(0,0,0,.15);
  transition: transform .08s ease, box-shadow .08s ease;
  text-transform: none; user-select: none;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(4px); box-shadow: 0 1px 0 var(--ink); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-btc { background: linear-gradient(180deg, #ffd084, var(--btc)); color: white; text-shadow: 0 1px 0 rgba(0,0,0,.25); }
.btn-mint { background: linear-gradient(180deg, #aef0c2, var(--mint)); }
.btn-sky { background: linear-gradient(180deg, #b9e9ff, var(--sky)); color: white; text-shadow: 0 1px 0 rgba(0,0,0,.2); }
.btn-pink { background: linear-gradient(180deg, #ffb6c2, var(--pink)); color: white; text-shadow: 0 1px 0 rgba(0,0,0,.2); }
.btn-danger { background: linear-gradient(180deg, #ff8c8c, #d92e2e); color: white; text-shadow: 0 1px 0 rgba(0,0,0,.3); border-color: #5a1010; box-shadow: 0 5px 0 #5a1010, 0 8px 12px rgba(0,0,0,.2); }
.btn-sm { padding: 8px 12px; font-size: 13px; border-width: 2px; box-shadow: 0 3px 0 var(--ink); border-radius: 10px; }
.btn-sm:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--ink); }

/* ======= panels / cards ======= */
.panel {
  background: white; border: 3px solid var(--ink); border-radius: 18px;
  box-shadow: 0 6px 0 var(--ink), 0 10px 18px rgba(0,0,0,.1);
  padding: 16px;
}
.panel-soft {
  background: rgba(255,255,255,.85); border: 2px solid rgba(42,31,18,.15);
  border-radius: 14px; padding: 12px;
}

/* ======= safety strip ======= */
.safety-strip {
  background: linear-gradient(90deg, #fff3d6, #ffe0a8);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  padding: 8px 16px; font-size: 13px; font-weight: 700; color: var(--ink2);
  display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.safety-strip .pill { background: white; border: 2px solid var(--ink); border-radius: 999px; padding: 2px 10px; font-size: 11px; }

/* ======= header ======= */
.header { padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 48px; height: 48px; border-radius: 14px;
  background: linear-gradient(180deg, var(--btc2), var(--btc)); border: 3px solid var(--ink);
  display: grid; place-items: center; color: white; font-weight: 900; font-size: 22px;
  box-shadow: 0 4px 0 var(--ink); text-shadow: 0 2px 0 rgba(0,0,0,.2);
  transform: rotate(-6deg);
}
.brand h1 { margin: 0; font-size: 22px; font-weight: 900; letter-spacing: -.5px; }
.brand .tag { font-size: 12px; color: var(--ink2); font-weight: 700; }
.nav { display: flex; gap: 6px; flex-wrap: wrap; }
.nav button {
  background: white; border: 2px solid var(--ink); border-radius: 10px; padding: 6px 12px; font-weight: 800; font-size: 13px; cursor: pointer;
  box-shadow: 0 3px 0 var(--ink);
}
.nav button:active { transform: translateY(2px); box-shadow: 0 1px 0 var(--ink); }
.nav button.active { background: var(--btc); color: white; }

/* ======= tetris board ======= */
.board {
  display: grid; gap: 2px; padding: 6px; background: #1c1207; border: 4px solid var(--ink);
  border-radius: 14px; box-shadow: inset 0 4px 12px rgba(0,0,0,.5), 0 6px 0 var(--ink);
  grid-template-columns: repeat(10, 1fr);
  width: 100%; aspect-ratio: 10/20;
}
.cell {
  background: rgba(255,255,255,.04); border-radius: 4px; aspect-ratio: 1;
  display: grid; place-items: center; font-weight: 900; font-size: 14px;
  color: rgba(255,255,255,.95); text-shadow: 0 1px 0 rgba(0,0,0,.4);
  position: relative;
}
.cell.filled {
  background: var(--c, #888);
  box-shadow:
    inset 0 -3px 0 rgba(0,0,0,.25),
    inset 0 3px 0 rgba(255,255,255,.4),
    inset 3px 0 0 rgba(255,255,255,.2),
    inset -3px 0 0 rgba(0,0,0,.15);
  border-radius: 4px;
}
.cell.ghost { background: rgba(255,255,255,.08); border: 1px dashed rgba(255,255,255,.15); }
.cell.flash { animation: flash .4s ease; }
@keyframes flash { 0%{filter:brightness(2.5)} 100%{filter:brightness(1)} }

/* mini board (next piece) */
.mini-board {
  display: grid; gap: 2px; padding: 4px; background: #1c1207;
  border: 2px solid var(--ink); border-radius: 8px;
  width: 100px; height: 80px;
  grid-template-columns: repeat(4, 1fr);
}
.mini-cell { background: rgba(255,255,255,.04); border-radius: 2px; }
.mini-cell.filled { background: var(--c); box-shadow: inset 0 -2px 0 rgba(0,0,0,.25), inset 0 2px 0 rgba(255,255,255,.4); }

/* word chips */
.word-chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: white; border: 2px solid var(--ink); border-radius: 8px;
  padding: 4px 8px; font-size: 12px; font-weight: 800; font-family: ui-monospace, monospace;
  box-shadow: 0 2px 0 var(--ink);
}
.word-chip .num { color: var(--btc); font-weight: 900; }

/* category cubes */
.cube-grid { display: grid; grid-template-columns: repeat(13, 1fr); gap: 6px; }
.cube {
  aspect-ratio: 1; border: 2px solid var(--ink); border-radius: 8px;
  background: linear-gradient(180deg, #fff, #f0e7d8);
  display: grid; place-items: center; font-weight: 900; cursor: pointer;
  font-size: 16px; box-shadow: 0 3px 0 var(--ink);
  transition: transform .1s;
  user-select: none;
}
.cube:hover { transform: translateY(-2px) rotate(-2deg); }
.cube.selected {
  background: linear-gradient(180deg, var(--btc2), var(--btc));
  color: white; text-shadow: 0 1px 0 rgba(0,0,0,.25);
  transform: translateY(-1px);
}
.cube.disabled { opacity: .35; cursor: not-allowed; }

/* avatar */
.avatar {
  width: 96px; height: 96px; border-radius: 16px;
  background: linear-gradient(180deg, var(--sky), #2a8cd9);
  border: 3px solid var(--ink); display: grid; place-items: center;
  box-shadow: 0 5px 0 var(--ink); position: relative; overflow: hidden;
}
.avatar::before {
  content: ""; position: absolute; inset: 12px 18px auto 18px; height: 22px; background: #fde0c1; border-radius: 6px; border: 2px solid var(--ink);
}
.avatar::after {
  content: ""; position: absolute; left: 22px; top: 22px; width: 8px; height: 8px; background: var(--ink); border-radius: 2px;
  box-shadow: 28px 0 0 var(--ink);
}

/* entropy jar */
.jar {
  width: 140px; height: 180px; border-radius: 18px 18px 28px 28px;
  background: linear-gradient(180deg, rgba(180,220,255,.4), rgba(120,180,230,.55));
  border: 3px solid var(--ink); position: relative; overflow: hidden;
  box-shadow: inset 0 8px 12px rgba(255,255,255,.5), inset 0 -10px 12px rgba(0,0,0,.15), 0 5px 0 var(--ink);
}
.jar::before {
  content: ""; position: absolute; left: 30%; right: 30%; top: -10px; height: 16px;
  background: var(--ink); border-radius: 6px;
}
.jar .liquid {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(180deg, rgba(247,147,26,.55), rgba(247,147,26,.85));
  transition: height .4s ease;
}
.jar .letters {
  position: absolute; inset: 4px; display: flex; flex-wrap: wrap-reverse; gap: 4px; align-content: flex-start; padding: 6px;
}
.jar .lblock {
  width: 22px; height: 22px; background: white; border: 2px solid var(--ink); border-radius: 5px;
  display: grid; place-items: center; font-weight: 900; font-size: 12px;
  box-shadow: 0 2px 0 var(--ink);
  animation: drop .35s cubic-bezier(.5,1.5,.5,1);
}
@keyframes drop { 0% { transform: translateY(-40px) rotate(-30deg); opacity: 0 } 100% { transform: none; opacity: 1 } }
.jar.shake { animation: shake .5s ease; }
@keyframes shake { 0%,100%{transform: none} 25%{transform: rotate(-3deg) translateX(-3px)} 75%{transform: rotate(3deg) translateX(3px)} }

/* ticket / scratch card */
.ticket {
  background: linear-gradient(135deg, #fff, #fff8e7);
  border: 3px dashed var(--ink); border-radius: 14px; padding: 14px;
  position: relative; box-shadow: 0 4px 0 rgba(0,0,0,.15);
}
.ticket::before, .ticket::after {
  content: ""; position: absolute; width: 16px; height: 16px; background: var(--cream); border: 3px solid var(--ink); border-radius: 50%;
}
.ticket::before { left: -10px; top: 50%; }
.ticket::after { right: -10px; top: 50%; }
.ticket .barcode {
  height: 26px; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 5px, var(--ink) 5px 6px, transparent 6px 9px);
  border-radius: 4px; margin: 6px 0;
}
.ticket .reveal {
  background: linear-gradient(135deg, #c5c5c5, #888); color: white; border-radius: 8px;
  padding: 12px; text-align: center; font-weight: 900; cursor: pointer; user-select: none;
  position: relative; overflow: hidden;
  box-shadow: inset 0 0 0 2px rgba(0,0,0,.2);
}
.ticket.verified .reveal { background: linear-gradient(135deg, #aef0c2, var(--mint)); color: var(--ink); }
.stamp {
  display: inline-block; transform: rotate(-12deg);
  border: 3px solid #2e7d32; color: #2e7d32; padding: 4px 10px; border-radius: 6px;
  font-weight: 900; letter-spacing: 1px;
}

/* ad slot */
.ad-slot {
  background: repeating-linear-gradient(45deg, #f3eedf 0 8px, #ebe3cd 8px 16px);
  border: 2px dashed #a89870; border-radius: 12px;
  padding: 16px; text-align: center; color: #6a5a30; font-weight: 700; font-size: 13px;
}
.ad-label { font-size: 10px; text-transform: uppercase; letter-spacing: 1px; color: #8b7530; margin-bottom: 4px; }

/* trust badges */
.trust-row { display: flex; flex-wrap: wrap; gap: 6px; }
.trust-pill {
  background: linear-gradient(180deg, #d4f5dd, #aef0c2);
  border: 2px solid #2e7d32; color: #2e7d32; border-radius: 999px;
  padding: 3px 10px; font-size: 11px; font-weight: 800;
}

/* mobile controls */
.mobile-controls {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  padding: 10px; background: rgba(0,0,0,.04); border-radius: 12px; border: 2px solid rgba(0,0,0,.1);
}
.mc-btn {
  background: linear-gradient(180deg, #fff, #ddd); border: 3px solid var(--ink);
  border-radius: 12px; padding: 14px; font-weight: 900; font-size: 18px; cursor: pointer;
  box-shadow: 0 4px 0 var(--ink); user-select: none; touch-action: manipulation;
}
.mc-btn:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--ink); }

/* layout helpers */
.row { display: flex; gap: 12px; }
.col { display: flex; flex-direction: column; gap: 12px; }
.muted { color: var(--ink2); }
.small { font-size: 12px; }

/* arena layout */
.arena {
  display: grid; grid-template-columns: 240px minmax(0, 1fr) 280px; gap: 16px;
  padding: 16px; max-width: 1400px; margin: 0 auto;
}
.arena .center { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.arena .board-wrap { width: min(60vh, 100%); max-width: 480px; position: relative; }

@media (max-width: 900px) {
  .arena { grid-template-columns: 1fr; }
  .cube-grid { grid-template-columns: repeat(7, 1fr); }
}

/* toast */
.toast-wrap { position: fixed; top: 20px; right: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 1000; }
.toast {
  background: var(--ink); color: white; border-radius: 10px; padding: 8px 14px;
  font-weight: 800; font-size: 13px; box-shadow: 0 4px 0 rgba(0,0,0,.2);
  animation: slidein .3s ease;
}
@keyframes slidein { from { transform: translateX(20px); opacity: 0 } to { transform: none; opacity: 1 } }

/* lobby portal */
.portal {
  position: relative; padding: 24px; text-align: center;
  background: radial-gradient(circle at 50% 50%, rgba(247,147,26,.2), transparent 70%);
  border-radius: 24px;
}
.portal .ring {
  width: 220px; height: 220px; margin: 0 auto; border-radius: 50%;
  background: conic-gradient(var(--btc), var(--sky), var(--mint), var(--purple), var(--btc));
  display: grid; place-items: center; padding: 8px;
  animation: spin 8s linear infinite;
  box-shadow: 0 0 40px rgba(247,147,26,.4);
}
.portal .ring-inner {
  width: 100%; height: 100%; border-radius: 50%;
  background: var(--cream); display: grid; place-items: center;
  border: 3px solid var(--ink);
  animation: spin 8s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg) } }

/* coin float */
.coin { display: inline-block; width: 18px; height: 18px; border-radius: 50%; background: linear-gradient(180deg, #ffe08a, var(--btc)); border: 2px solid var(--ink); font-size: 10px; line-height: 14px; text-align: center; font-weight: 900; color: white; vertical-align: middle; }

footer.foot { padding: 32px 16px; text-align: center; color: var(--ink2); border-top: 2px dashed rgba(0,0,0,.15); margin-top: 24px; }
.kbd { font-family: ui-monospace, monospace; background: white; border: 1.5px solid var(--ink); border-radius: 4px; padding: 1px 5px; font-size: 11px; box-shadow: 0 1.5px 0 var(--ink); }