/* Pro Fix 19 – stable visuals & mobile disabled */
*{box-sizing:border-box; -webkit-tap-highlight-color: transparent}
html,body{height:100%}
html[data-theme="light"], html[data-theme="dark"]{
  --bg-a:#0e1325; --bg-b:#0e1325;
  --card:rgba(23,33,57,0.96); --card-2:rgba(23,33,57,0.85);
  --border:rgba(99,110,133,0.28); --text:#e6edf6; --muted:#cbd5e1;
  --accent:#6b7cff; --accent-2:#a78bfa; --success:#34d399;
}
body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;color:var(--text);
  background:radial-gradient(1400px 900px at 10% -10%, rgba(86,90,235,.18), transparent 60%),
             radial-gradient(1000px 700px at 120% 40%, rgba(167,139,250,.18), transparent 60%),
             linear-gradient(180deg, var(--bg-a), var(--bg-b)); background-attachment:fixed; overflow-x:hidden; }
.bkbi-scope{max-width:1360px;margin:0 auto;padding:28px 28px 44px}

.header{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;margin:6px 0 22px}
.title{font-size:clamp(28px, 4.2vw, 40px);font-weight:900;letter-spacing:-.02em;margin:0;
  background:linear-gradient(90deg,#e6e6ff, var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.header-right{display:flex;align-items:center;gap:18px;justify-self:end}
.badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.06);border:1px solid var(--border);border-radius:16px;padding:10px 14px;font-weight:700;box-shadow:0 10px 30px rgba(0,0,0,.25)}

.pill{display:inline-flex;border:1px solid var(--border);background:rgba(255,255,255,0.04);border-radius:999px;overflow:hidden}
.pill .btn{border:0;border-right:1px solid var(--border);background:transparent}
.pill .btn:last-child{border-right:0}
.btn{appearance:none;color:var(--text);padding:12px 16px;border-radius:14px;border:1px solid var(--border);
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));cursor:pointer;font-weight:700;
  touch-action: manipulation; user-select:none}
.btn.primary{color:#fff;border-color:transparent;background:linear-gradient(90deg,#6b7cff,#8b5cf6)}
.btn.success{color:#00170f;border-color:transparent;background:linear-gradient(90deg,#34d399,#10b981)}

.btn.used,
.btn[disabled],
.btn[aria-disabled="true"],
.btn[data-used="true"]{
  opacity:.45 !important;
  pointer-events:none !important;
  filter:grayscale(40%);
}

.tabs{display:inline-flex;border:1px solid var(--border);border-radius:18px;overflow:hidden;background:rgba(255,255,255,0.04)}
.tab{padding:12px 22px;background:rgba(255,255,255,0.06);cursor:pointer;color:var(--muted);font-weight:800}
.tab.active{color:#fff;background:linear-gradient(90deg,#6b7cff,#8b5cf6)}
.tab + .tab{border-left:1px solid rgba(255,255,255,0.08)}

.grid{display:grid;gap:26px}
.grid-2{grid-template-columns:1fr}
@media (min-width:1000px){ .grid-2{grid-template-columns:1fr 1fr} }
.card{background:linear-gradient(180deg, var(--card), var(--card-2));border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:0 12px 46px rgba(0,0,0,.35)}
.card h3{margin:0 0 14px 0;font-size:22px;letter-spacing:.2px}

.input{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,.04);color:var(--text)}
.letters{display:flex;flex-wrap:wrap;gap:10px;min-height:64px;padding:12px;border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,.04)}
.num{display:inline-grid;place-content:center;width:56px;height:56px;border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,.08);font-weight:900}
.row-between{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
.kv{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.calcbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px}
.calcchip{border:1px solid var(--border);background:rgba(255,255,255,.06);padding:6px 10px;border-radius:999px}
.calcres{font-weight:800}
.ops .btn{min-width:44px}
.added{margin-top:10px;opacity:.85}