/* ===== 네온 테트리스 ===== */

:root{
  --bg:#0E1117;
  --bg-soft:#141924;
  --panel:#161b26;
  --panel-2:#1b2130;
  --line:#2A2F3A;
  --text:#E6EAF2;
  --muted:#8B93A7;
  --accent:#22D3EE;
  --accent-dim:rgba(34,211,238,.16);
  --danger:#F87171;
  --radius:14px;
}

*{box-sizing:border-box}
[hidden]{display:none !important}

html,body{height:100%}

body{
  margin:0;
  background:
    radial-gradient(1100px 620px at 15% -10%, rgba(34,211,238,.13), transparent 62%),
    radial-gradient(900px 520px at 100% 0%, rgba(168,85,247,.12), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:"Pretendard","Apple SD Gothic Neo","Noto Sans KR",system-ui,-apple-system,"Segoe UI",sans-serif;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,canvas{max-width:100%}

button{font:inherit;color:inherit}

/* ---------- 레이아웃 ---------- */
.app{
  width:100%;
  max-width:1060px;
  margin:0 auto;
  padding:18px 16px calc(24px + env(safe-area-inset-bottom));
  display:flex;
  flex-direction:column;
  gap:16px;
}

.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}

.logo{
  margin:0;
  font-size:clamp(18px,4.4vw,24px);
  font-weight:800;
  letter-spacing:-.02em;
  display:flex;
  align-items:center;
  gap:8px;
}
.logo em{
  font-style:normal;
  color:var(--accent);
  text-shadow:0 0 18px rgba(34,211,238,.55);
}
.logo-mark{
  color:var(--accent);
  font-size:.9em;
  text-shadow:0 0 16px rgba(34,211,238,.7);
}

.topbar-actions{display:flex;gap:8px;flex-wrap:wrap}

.btn{
  border:1px solid var(--line);
  background:var(--panel-2);
  border-radius:999px;
  padding:9px 16px;
  font-size:14px;
  font-weight:600;
  cursor:pointer;
  transition:transform .12s ease, border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover{border-color:rgba(34,211,238,.45)}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:linear-gradient(180deg,#22D3EE,#0ea5c4);
  border-color:transparent;
  color:#06212a;
  box-shadow:0 6px 22px rgba(34,211,238,.28);
}
.btn-primary:hover{box-shadow:0 8px 28px rgba(34,211,238,.42)}
.btn-ghost{background:rgba(255,255,255,.04)}

.game{
  display:grid;
  grid-template-columns:minmax(0,1fr) 262px;
  grid-template-rows:auto 1fr;
  gap:16px;
  align-items:start;
}
.side-top{grid-column:2;grid-row:1}
.board-col{grid-column:1;grid-row:1 / span 2;min-width:0}
.side-bottom{grid-column:2;grid-row:2}
.side{display:flex;flex-direction:column;gap:14px;min-width:0}

/* ---------- 보드 ---------- */
.board-wrap{
  position:relative;
  width:100%;
  height:min(74vh,660px);
  display:flex;
  align-items:center;
  justify-content:center;
}
.board-canvas{
  display:block;
  border-radius:12px;
  background:#0b0f16;
  border:1px solid var(--line);
  box-shadow:0 0 0 1px rgba(34,211,238,.08), 0 24px 60px rgba(0,0,0,.55), inset 0 0 60px rgba(34,211,238,.04);
  touch-action:none;
}

.flash-text{
  position:absolute;
  left:50%;
  top:28%;
  transform:translate(-50%,-50%) scale(.85);
  font-size:clamp(20px,5vw,34px);
  font-weight:900;
  letter-spacing:-.02em;
  color:#fff;
  text-shadow:0 0 22px rgba(34,211,238,.9), 0 0 48px rgba(34,211,238,.6);
  opacity:0;
  pointer-events:none;
  white-space:nowrap;
}
.flash-text.is-on{animation:popFlash .9s ease-out forwards}
@keyframes popFlash{
  0%{opacity:0;transform:translate(-50%,-50%) scale(.7)}
  18%{opacity:1;transform:translate(-50%,-50%) scale(1.08)}
  60%{opacity:1;transform:translate(-50%,-60%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-110%) scale(.96)}
}

/* ---------- 카드 / 패널 ---------- */
.strip{display:flex;flex-direction:column;gap:14px}

.card{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:14px;
  min-width:0;
}
.card-title{
  margin:0 0 10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--muted);
}

.next-card{display:flex;flex-direction:column;align-items:flex-start}
.next-canvas{
  display:block;
  width:100%;
  max-width:170px;
  margin:0 auto;
  border-radius:10px;
  background:#0b0f16;
  border:1px solid var(--line);
}

.stats{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;
}
.stat{
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border:1px solid var(--line);
  border-radius:12px;
  padding:10px 12px;
  min-width:0;
}
.stat-label{
  display:block;
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:4px;
}
.stat-value{
  display:block;
  font-size:clamp(17px,4.6vw,22px);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
  overflow:hidden;
  text-overflow:ellipsis;
}
.stat-best{border-color:rgba(34,211,238,.35);background:linear-gradient(180deg,rgba(34,211,238,.1),rgba(34,211,238,.03))}
.stat-best .stat-value{color:var(--accent)}
.stat.is-bump{animation:bump .35s ease}
@keyframes bump{
  0%{transform:scale(1)}40%{transform:scale(1.06)}100%{transform:scale(1)}
}

.record-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.record-item{
  display:flex;
  align-items:center;
  gap:9px;
  font-size:13px;
  padding:7px 9px;
  border-radius:10px;
  background:rgba(255,255,255,.03);
  border:1px solid rgba(255,255,255,.05);
  min-width:0;
}
.record-rank{
  flex:0 0 auto;
  width:20px;height:20px;
  display:grid;place-items:center;
  border-radius:6px;
  font-size:11px;font-weight:800;
  background:var(--accent-dim);
  color:var(--accent);
}
.record-item.is-top .record-rank{background:var(--accent);color:#06212a}
.record-score{font-weight:800;font-variant-numeric:tabular-nums}
.record-meta{margin-left:auto;font-size:11px;color:var(--muted);white-space:nowrap}
.record-empty{font-size:13px;color:var(--muted);line-height:1.6}

.keys{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.keys li{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);flex-wrap:wrap}
.keys span{margin-left:auto;color:var(--text)}
kbd{
  display:inline-block;
  min-width:24px;
  text-align:center;
  padding:2px 6px;
  font-family:inherit;
  font-size:11px;
  font-weight:700;
  color:var(--text);
  background:#0d1118;
  border:1px solid var(--line);
  border-bottom-width:2px;
  border-radius:6px;
}

.foot{font-size:11.5px;color:var(--muted);text-align:center}

/* ---------- 터치 조작 ---------- */
.touchpad{
  display:none;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:8px;
}
.tbtn{
  border:1px solid var(--line);
  background:linear-gradient(180deg,var(--panel),var(--panel-2));
  border-radius:12px;
  padding:14px 6px;
  font-size:17px;
  font-weight:700;
  cursor:pointer;
  user-select:none;
  -webkit-user-select:none;
  -webkit-tap-highlight-color:transparent;
  touch-action:none;
}
.tbtn:active,.tbtn.is-down{
  background:var(--accent-dim);
  border-color:rgba(34,211,238,.55);
  color:var(--accent);
}
.tbtn-wide{grid-column:span 3;font-size:15px;padding:12px 6px}
.tbtn-accent{
  border-color:rgba(34,211,238,.4);
  color:var(--accent);
}

@media (max-width:860px){
  .touchpad{display:grid}
}
@media (hover:none) and (pointer:coarse){
  .touchpad{display:grid}
}

/* ---------- 오버레이 ---------- */
.overlay{
  display:none;
  position:fixed;
  inset:0;
  z-index:60;
  place-items:center;
  padding:20px;
  background:rgba(6,9,14,.78);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
}
.overlay.is-open{display:grid}

.sheet{
  position:relative;
  width:100%;
  max-width:380px;
  background:linear-gradient(180deg,#171d29,#121722);
  border:1px solid var(--line);
  border-radius:18px;
  padding:26px 22px 22px;
  text-align:center;
  box-shadow:0 30px 80px rgba(0,0,0,.6), 0 0 0 1px rgba(34,211,238,.08);
  animation:sheetIn .22s ease-out;
}
@keyframes sheetIn{from{opacity:0;transform:translateY(12px) scale(.97)}to{opacity:1;transform:none}}

.sheet-close{
  position:absolute;
  top:10px;right:10px;
  width:34px;height:34px;
  border-radius:50%;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-size:20px;
  line-height:1;
  cursor:pointer;
}
.sheet-close:hover{border-color:rgba(34,211,238,.45);color:var(--accent)}

.sheet-kicker{margin:0 0 4px;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--accent)}
.sheet-title{margin:0 0 14px;font-size:26px;font-weight:900;letter-spacing:-.02em}
.sheet-desc{margin:14px 0 0;font-size:13.5px;line-height:1.65;color:var(--muted)}
.sheet-actions{margin-top:18px;display:flex;gap:9px;justify-content:center;flex-wrap:wrap}
.sheet-actions .btn{flex:1 1 140px}

.result-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.result{
  background:rgba(255,255,255,.04);
  border:1px solid var(--line);
  border-radius:12px;
  padding:11px 6px;
  min-width:0;
}
.result-label{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}
.result-value{display:block;font-size:19px;font-weight:800;font-variant-numeric:tabular-nums}
.sheet.is-record .sheet-kicker{color:#FACC15}
.sheet.is-record .sheet-title{color:#FACC15;text-shadow:0 0 24px rgba(250,204,21,.5)}

/* ---------- 토스트 ---------- */
.toast-wrap{
  position:fixed;
  left:50%;
  bottom:calc(20px + env(safe-area-inset-bottom));
  transform:translateX(-50%);
  z-index:80;
  display:flex;
  flex-direction:column;
  gap:8px;
  align-items:center;
  width:min(92vw,420px);
  pointer-events:none;
}
.toast{
  width:100%;
  padding:11px 15px;
  border-radius:12px;
  font-size:13.5px;
  font-weight:600;
  background:#1b2130;
  border:1px solid var(--line);
  box-shadow:0 14px 36px rgba(0,0,0,.5);
  animation:toastIn .2s ease-out;
}
.toast.ok{border-color:rgba(34,211,238,.5);color:var(--accent)}
.toast.err{border-color:rgba(248,113,113,.55);color:var(--danger)}
.toast.out{animation:toastOut .25s ease-in forwards}
@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateY(8px)}}

/* ---------- 반응형 ---------- */
@media (max-width:860px){
  .app{padding:14px 12px calc(18px + env(safe-area-inset-bottom));gap:12px}
  .game{display:flex;flex-direction:column;gap:12px}
  .strip{flex-direction:row;align-items:stretch;gap:10px}
  .next-card{flex:0 0 108px;padding:10px}
  .next-canvas{max-width:100%}
  .stats{flex:1 1 auto;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
  .stat{padding:8px 10px}
  .board-wrap{height:min(54vh,520px)}
  .side-bottom{gap:10px}
}

@media (max-width:420px){
  .topbar{gap:8px}
  .logo{font-size:17px}
  .btn{padding:8px 13px;font-size:13px}
  .next-card{flex:0 0 94px}
  .board-wrap{height:min(50vh,460px)}
  .keys li{font-size:12px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
}