/* Sleek, modern theme */
:root{--bg:#0b1020;--bg-2:#0e1326;--card:#0f172a;--card-2:#111a31;--border:#1f2a44;--ring:#3b82f6;--text:#e5e7eb;--muted:#9aa3b2;--primary:#22c55e;--primary-600:#16a34a;--gray:#0b1222;--yellow:#fee799;--tile-size:64px}
*{box-sizing:border-box;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif}
html,body{margin:0;padding:0;background:radial-gradient(1200px 600px at 10% -10%,#1a2453 0%,transparent 60%),radial-gradient(1000px 500px at 90% 0%,#103a3f 0%,transparent 50%),linear-gradient(180deg,var(--bg),var(--bg-2));color:var(--text)}
.container{max-width:1000px;margin:0 auto;padding:16px}
.header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px;background:rgba(17,24,39,.4);border:1px solid rgba(255,255,255,.06);backdrop-filter:blur(6px);border-radius:14px;padding:10px 12px;box-shadow:0 10px 30px rgba(0,0,0,.25)}
.brand{display:flex;align-items:center;gap:10px}
.brand-title{font-weight:900;font-size:24px;letter-spacing:.5px;background:linear-gradient(90deg,#60a5fa 0%,#34d399 50%,#fde68a 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.badge{background:linear-gradient(180deg,#1f2937,#111827);color:#cbd5e1;padding:3px 10px;border-radius:999px;font-size:12px;border:1px solid rgba(255,255,255,.08)}
.controls{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.select{border:1px solid var(--border);padding:10px 12px;border-radius:12px;background:linear-gradient(180deg,#0d142a,#0b1120);color:var(--text);box-shadow:inset 0 0 0 1px rgba(255,255,255,.03)}
.coins{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.03);border:1px solid var(--border);padding:6px 8px;border-radius:12px}

.btn{border:1px solid var(--border);background:linear-gradient(180deg,#0e152b,#0b1120);padding:10px 14px;border-radius:12px;cursor:pointer;color:var(--text);transition:.18s ease;box-shadow:0 1px 0 rgba(255,255,255,.05) inset,0 10px 20px rgba(0,0,0,.25)}
.btn:hover{transform:translateY(-1px);box-shadow:0 1px 0 rgba(255,255,255,.05) inset,0 14px 28px rgba(0,0,0,.3)}
.btn:active{transform:translateY(0);filter:saturate(1.1)}
.btn.pill{background:linear-gradient(180deg,#111a32,#0d1428)}
.btn.solid{background:linear-gradient(180deg,var(--primary),var(--primary-600));color:#06240f;border-color:rgba(255,255,255,.12);text-shadow:0 1px 0 rgba(255,255,255,.2)}
.btn.solid.dark{background:linear-gradient(180deg,#111827,#0b1221);border-color:#0f172a;color:#fff}
.btn.outline{background:linear-gradient(180deg,#0e152b,#0b1120)}
.btn:disabled{opacity:.55;cursor:not-allowed;filter:grayscale(.2)}

.ad-banner{width:100%;border:1px dashed rgba(203,213,225,.3);padding:12px;border-radius:14px;text-align:center;color:#a6b2c6;font-size:12px;opacity:.95;background:linear-gradient(180deg,#0e152b,#0b1120)}
.ad-title{font-weight:700;color:#cbd5e1}
.ad-sub{margin-top:2px}

.grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px;margin-top:12px}
@media (max-width:1100px){.grid{grid-template-columns:1fr 1fr}}
@media (max-width:800px){.grid{grid-template-columns:1fr;gap:14px}}
.card{background:linear-gradient(180deg,#0e152b,#0b1120);border:1px solid rgba(255,255,255,.06);border-radius:18px;padding:16px;box-shadow:0 12px 30px rgba(0,0,0,.28)}
.card:hover{border-color:rgba(255,255,255,.12)}
.start-goal{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px}
.ladder-box{display:grid;gap:10px;align-items:center;justify-items:stretch}
.timer{justify-self:end;color:#cbd5e1;font-weight:800;letter-spacing:.5px}
.stack{display:grid;gap:12px}
.word-line{display:grid;grid-template-columns:72px repeat(var(--tile-count,5),var(--tile-size));gap:12px;align-items:center}
.label.spacer{visibility:hidden}
.tile-row.v-start .tile{background:linear-gradient(180deg,rgba(59,130,246,.18),rgba(59,130,246,.06));border-color:rgba(59,130,246,.35)}
.tile-row.v-goal .tile{background:linear-gradient(180deg,rgba(234,179,8,.2),rgba(234,179,8,.08));border-color:rgba(234,179,8,.45)}
.rung-row{position:relative}
.tile-row{display:grid;grid-template-columns:repeat(var(--tile-count,5),var(--tile-size));gap:12px;justify-content:start}
.tile{width:var(--tile-size);height:var(--tile-size);display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.08);border-radius:14px;font-weight:900;font-size:26px;background:linear-gradient(180deg,#0f172a,#0b1221);box-shadow:inset 0 1px 0 rgba(255,255,255,.07),0 10px 24px rgba(0,0,0,.28);letter-spacing:1px}
.tile.hl{background:linear-gradient(180deg,rgba(34,197,94,.18),rgba(34,197,94,.06));border-color:rgba(34,197,94,.4);animation:tilePulse .9s ease both}
.tile-row.v-empty .tile{background:linear-gradient(180deg,rgba(148,163,184,.12),rgba(148,163,184,.04));border-color:rgba(148,163,184,.28);color:#94a3b8}

.ladder{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.step{padding:6px 12px;border:1px solid rgba(255,255,255,.08);border-radius:999px;background:linear-gradient(180deg,#0f172a,#0b1221);box-shadow:0 8px 18px rgba(0,0,0,.25)}
.step.gray{background:linear-gradient(180deg,#0f172a,#0c1426)}
.step.green{background:linear-gradient(180deg,rgba(34,197,94,.18),rgba(34,197,94,.06));border-color:rgba(34,197,94,.35)}

.row{display:flex;gap:10px;align-items:center;margin-top:10px;flex-wrap:wrap}
.input{flex:1;min-width:220px;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:12px;background:linear-gradient(180deg,#0d142a,#0b1120);color:var(--text);box-shadow:inset 0 0 0 1px rgba(255,255,255,.03);outline:none;transition:border-color .18s ease, box-shadow .18s ease;height:58px;font-size:26px;font-weight:900;letter-spacing:1px;text-transform:uppercase}
.input::placeholder{color:#94a3b8;opacity:.85;font-size:14px;letter-spacing:.5px;font-weight:600;text-transform:none}
.input:focus{border-color:rgba(59,130,246,.55);box-shadow:0 0 0 3px rgba(59,130,246,.25)}

.error{margin-top:8px;color:#fca5a5;font-size:14px}
.muted{color:var(--muted)}
.small{font-size:12px}
.fw{font-weight:700}

.howto{margin:8px 0 0 18px;color:#a6b2c6}
.footer{margin-top:18px;text-align:center;color:#9aa3b2}
.stats-big{margin-top:14px;border-top:1px dashed rgba(255,255,255,.08);padding-top:12px;display:grid;gap:6px;font-size:18px}

.modal-backdrop{position:fixed;inset:0;background:rgba(2,6,23,.6);display:grid;place-items:center;padding:16px;z-index:10;backdrop-filter:blur(2px)}
.modal{background:linear-gradient(180deg,#0e152b,#0b1120);border:1px solid rgba(255,255,255,.06);border-radius:18px;box-shadow:0 20px 50px rgba(0,0,0,.45);max-width:420px;width:100%;}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid rgba(255,255,255,.06)}
.modal-title{font-weight:700}
.modal-body{padding:12px;display:grid;gap:10px}
.lb{display:grid;gap:8px}
.lb-row{display:grid;grid-template-columns:40px 1fr auto;align-items:center;border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:8px 10px;background:linear-gradient(180deg,#0f172a,#0c1426)}
.lb-rank{font-weight:900;color:#cbd5e1}
.lb-time{font-weight:800}
.lb-hints{color:#a6b2c6}
.shop-pack{display:flex;align-items:center;justify-content:space-between;border:1px solid rgba(255,255,255,.06);border-radius:12px;padding:10px;background:linear-gradient(180deg,#0f172a,#0c1426)}
.modal-foot{padding:8px 12px;border-top:1px solid rgba(255,255,255,.06)}

.win{margin-top:12px;background:linear-gradient(180deg,rgba(59,130,246,.15),rgba(59,130,246,.06));border:1px solid rgba(59,130,246,.35);border-radius:14px;padding:12px}
.lose{margin-top:12px;background:linear-gradient(180deg,rgba(239,68,68,.18),rgba(239,68,68,.06));border:1px solid rgba(239,68,68,.35);border-radius:14px;padding:12px}
.done{margin-top:12px;background:linear-gradient(180deg,rgba(148,163,184,.18),rgba(148,163,184,.06));border:1px solid rgba(148,163,184,.35);border-radius:14px;padding:12px}

@keyframes tilePulse{0%{transform:scale(.98)}60%{transform:scale(1.03)}100%{transform:scale(1)}}

@media (max-width: 900px){:root{--tile-size:56px}}
@media (max-width: 640px){:root{--tile-size:50px}}
@media (max-width: 420px){:root{--tile-size:44px}}

.keyboard{display:grid;gap:10px;margin-top:12px}
.kb-row{display:flex;gap:10px;justify-content:center}
.kb-row.indent{padding-left:22px}
.keyboard{touch-action:manipulation}
.kb-key{-webkit-tap-highlight-color:transparent}
.kb-key{border:1px solid rgba(255,255,255,.08);background:linear-gradient(180deg,#0f172a,#0b1221);border-radius:10px;min-width:42px;height:54px;padding:0 14px;font-weight:900;font-size:18px;letter-spacing:.6px;color:#e5e7eb;cursor:pointer;user-select:none;transition:.18s ease}
.kb-key:hover{transform:translateY(-1px);box-shadow:0 8px 16px rgba(0,0,0,.25)}
.kb-key:active{transform:translateY(0)}
.kb-key:disabled{opacity:.6;cursor:not-allowed}
.kb-key.wide{min-width:96px}