:root{color-scheme:light;--bg: #f3f0e7;--fg: #19191e;--muted: #706d72;--tile-border: #c9c2b6;--tile-empty: #fbf9f3;--accent: #ff5a3c;--accent-strong: #e94629;--accent-fg: #17171b;--card: #fffdf8;--surface: #e9e5da;--surface-raised: #f9f6ef;--danger: #b92f45;--grid-line: rgb(25 25 30 / 5%);--shadow: 0 2px 0 rgb(25 25 30 / 8%), 0 18px 48px rgb(25 25 30 / 8%);--shadow-key: 0 3px 0 #b8b0a3;--font: "Aptos", "Segoe UI Variable", "Segoe UI", system-ui, sans-serif;--font-display: "Arial Narrow", "Roboto Condensed", "Helvetica Neue", sans-serif;--font-mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;--tracking-tile: -.035em;--pop: .15s cubic-bezier(.2, .8, .3, 1);--flip: .22s cubic-bezier(.2, .8, .3, 1);--enter: .42s cubic-bezier(.2, .8, .2, 1);--radius-sm: 6px;--radius: 10px;--radius-lg: 18px;--gap: 12px}:root[data-theme=dark]{color-scheme:dark;--bg: #151519;--fg: #f4f0e7;--muted: #9d99a1;--tile-border: #444149;--tile-empty: #1d1d22;--accent: #ff7155;--accent-strong: 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var(--pop)}.btn--primary:disabled:after{background:var(--muted)}.btn--ghost{min-height:40px;padding:10px 18px;border-color:var(--tile-border);background:transparent;color:var(--fg);font-size:13px}.btn--icon{width:38px;min-height:38px;padding:0;border-color:transparent;border-radius:50%;background:transparent;color:var(--muted);line-height:0}.btn--icon:disabled{visibility:hidden}@media (hover: hover){.btn:not(:disabled):hover{transform:translateY(-2px)}.btn--primary:not(:disabled):hover{box-shadow:6px 6px 0 var(--accent)}.btn--primary:not(:disabled):hover:after{transform:translate(2px)}.btn--ghost:not(:disabled):hover,.btn--icon:not(:disabled):hover{border-color:var(--fg);background:var(--surface-raised);color:var(--fg)}}.elo-badge{display:inline-flex;align-items:center;min-height:28px;padding:5px 9px;border:1px solid var(--tile-border);border-radius:999px;background:var(--surface-raised);color:var(--muted);font-family:var(--font-mono);font-size:10px;font-weight:700;font-variant-numeric:tabular-nums;letter-spacing:.05em}.tiles{display:flex;justify-content:center;gap:8px;max-width:100%}.tiles--word{width:100%;max-width:calc(var(--tile-count) * 48px);gap:clamp(2px,1vw,8px)}.tiles--word .tile{flex:1 1 0;width:auto;min-width:0;max-width:40px;height:auto;aspect-ratio:1;font-size:clamp(13px,4.6vw,22px)}.tiles--prompt{align-items:center;gap:clamp(12px,3vw,24px);width:min(100%,430px)}.tile{--size: 56px;position:relative;display:grid;flex:0 0 var(--size);width:var(--size);height:var(--size);place-items:center;border:1px solid var(--tile-border);border-radius:8px;background:var(--tile-empty);box-shadow:var(--shadow-key);color:var(--fg);font-family:var(--font-display);font-size:calc(var(--size) * .54);font-weight:900;letter-spacing:var(--tracking-tile);line-height:1;text-transform:uppercase;transition:background var(--pop),border-color var(--pop),box-shadow var(--pop),transform var(--pop)}.tile--filled{border-color:var(--fg);animation:pop var(--pop)}.tile--fixed{border-color:var(--fg);background:var(--fg);box-shadow:0 3px 0 var(--accent);color:var(--bg)}.tile--fixed:after{position:absolute;top:5px;right:5px;width:4px;height:4px;border-radius:50%;background:var(--accent);content:""}.tile--locked{border-color:var(--accent);background:var(--accent);box-shadow:0 3px 0 var(--accent-strong);color:var(--accent-fg);animation:flip var(--flip) ease}.tile--ghost{border-style:dashed;box-shadow:none;opacity:.62}.tile--sm{--size: 40px}.tile--xs{--size: 30px}.tile__gap{width:10px}@keyframes pop{0%{transform:translateY(2px) scale(.94)}65%{transform:translateY(-1px) scale(1.035)}to{transform:translateY(0) scale(1)}}@keyframes flip{0%{transform:rotateX(0)}50%{transform:rotateX(-90deg)}to{transform:rotateX(0)}}.prompt{display:flex;flex-direction:column;align-items:center;gap:16px;width:100%;padding:clamp(18px,3vw,26px);border:1px solid var(--tile-border);border-radius:var(--radius-lg);background:var(--card);box-shadow:var(--shadow)}.prompt__row{display:flex;align-items:center;gap:10px}.prompt__meta{display:flex;align-items:center;gap:10px;color:var(--muted);font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.countdown{width:min(100%,560px);height:6px;overflow:hidden;border-radius:999px;background:var(--surface)}.countdown__fill{height:100%;border-radius:999px;background:var(--fg);transition:width .12s linear,background .3s ease}.countdown__fill--urgent{background:var(--danger)}.duel{display:grid;grid-template-columns:1fr;gap:14px}.side{position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:13px;min-width:0;min-height:170px;padding:18px 14px 20px;overflow:hidden;border:1px solid var(--tile-border);border-radius:var(--radius-lg);background:var(--surface)}.side:before{position:absolute;top:0;right:0;left:0;height:3px;background:var(--tile-border);content:""}.side--mine{border-color:var(--fg);background:var(--card)}.side--mine:before{background:var(--accent)}.side__label{display:flex;align-items:center;gap:7px;min-height:20px;color:var(--muted);font-family:var(--font-mono);font-size:9px;font-weight:700;letter-spacing:.11em;text-transform:uppercase}.chip{padding:2px 6px;border:1px solid var(--tile-border);border-radius:999px;background:var(--surface-raised);font-size:8px;letter-spacing:.09em}@media (min-width: 680px){.duel{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}}.word-input{display:flex;flex-direction:column;align-items:center;gap:8px;width:100%}.word-input__field{width:min(100%,340px);padding:11px 14px;border:1px solid var(--tile-border);border-radius:8px;background:var(--tile-empty);box-shadow:0 3px 0 var(--tile-border);color:var(--fg);font-family:var(--font-mono);font-size:19px;font-weight:700;letter-spacing:.16em;line-height:1.2;text-align:center;text-transform:uppercase;transition:border-color var(--pop),box-shadow var(--pop),transform var(--pop)}.word-input__field::placeholder{color:var(--tile-border);opacity:1}.word-input__field:focus{border-color:var(--fg);outline:none;box-shadow:0 3px 0 var(--accent)}.word-input__field:disabled{cursor:not-allowed;opacity:.5}.word-input--shake{animation:shake .16s ease}.word-input__feedback{min-height:18px;color:var(--danger);font-size:12px;font-weight:700}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-6px)}75%{transform:translate(6px)}}.result{margin:0;color:var(--fg);font-family:var(--font-display);font-size:clamp(48px,12vw,78px);font-weight:900;letter-spacing:-.055em;line-height:.95;text-transform:uppercase}.result--win{text-decoration:underline;text-decoration-color:var(--accent);text-decoration-thickness:.12em;text-underline-offset:.08em}.result--loss{color:var(--danger)}.elo-delta{margin:8px 0 0;color:var(--fg);font-family:var(--font-mono);font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}.elo-delta__value{color:var(--muted)}.sheet{display:flex;flex-direction:column;gap:0;width:min(100%,440px);margin:0 auto;padding:clamp(18px,4vw,30px);border:1px solid var(--tile-border);border-radius:var(--radius-lg);background:var(--card);box-shadow:var(--shadow)}.row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:58px;padding:12px 0;border-bottom:1px solid var(--tile-border)}.row:nth-last-child(2){border-bottom:0}.row__label{font-size:14px;font-weight:650}.switch{display:flex;width:50px;height:28px;padding:3px;border:1px solid var(--tile-border);border-radius:999px;background:var(--surface);transition:background var(--pop),border-color var(--pop)}.switch[aria-checked=true]{justify-content:flex-end;border-color:var(--fg);background:var(--fg)}.switch__dot{width:20px;height:20px;border-radius:999px;background:var(--muted);transition:background var(--pop),transform var(--pop)}.switch[aria-checked=true] .switch__dot{background:var(--accent)}.name-input{width:min(48vw,190px);padding:8px 10px;border:1px solid var(--tile-border);border-radius:7px;background:var(--tile-empty);color:var(--fg);font:inherit;text-align:right}.name-input:focus{border-color:var(--fg);outline:none;box-shadow:0 2px 0 var(--accent)}.banner{margin:0;padding:10px 13px;border:1px solid var(--tile-border);border-radius:var(--radius);background:var(--surface-raised);color:var(--muted);font-size:12px;text-align:center}.banner--warn{border-color:color-mix(in srgb,var(--danger) 35%,var(--tile-border));color:var(--danger)}.spinner{position:relative;width:44px;height:32px}.spinner:before,.spinner:after{position:absolute;top:2px;bottom:2px;width:9px;border-radius:3px;background:var(--fg);content:"";animation:search .7s ease-in-out infinite alternate}.spinner:before{left:7px;box-shadow:0 3px 0 var(--accent)}.spinner:after{right:7px;animation-delay:-.35s;box-shadow:0 3px 0 var(--accent)}@keyframes search{0%{transform:translateY(-3px)}to{transform:translateY(3px)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media (max-width: 720px){.landing{grid-template-columns:1fr;gap:42px}.landing__copy{align-items:center;text-align:center}.landing__description{max-width:520px}.landing__actions{justify-content:center}.specimen{width:min(90%,350px);justify-self:center}}@media (max-width: 520px){.app{padding-right:16px;padding-left:16px}.topbar{min-height:52px}.landing__title{font-size:clamp(45px,14.2vw,64px)}.screen{padding:26px 0}.specimen{padding:24px 20px;box-shadow:8px 8px 0 var(--accent)}.tile{--size: clamp(42px, 13vw, 52px)}.tile--sm{--size: clamp(30px, 9.2vw, 38px)}.tile--xs{--size: 28px}.tiles{gap:5px}.tile__gap{width:2px}.prompt{padding-right:10px;padding-left:10px}.side{padding-right:9px;padding-left:9px}}@media (prefers-reduced-motion: reduce){.spinner:before,.spinner:after{animation:none}}