:root{
  color-scheme:dark;
  --bg:#0b1024;--bg2:#171234;--panel:rgba(20,24,52,.88);--panel-solid:#151936;--ink:#f7f3ea;--muted:#aaaec5;
  --gold:#f3c86b;--gold2:#d99f35;--blue:#6fc8ff;--plum:#ba80ff;--line:rgba(231,225,255,.13);--cell:#f6f2e9;--cell-ink:#1c2031;
  --given:#121629;--selected:#f6cb67;--peer:#dce8fb;--same:#c9dcff;--danger:#dc6f86;--shadow:0 28px 70px rgba(0,0,0,.38);
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}html{min-height:100%;background:var(--bg)}body{min-height:100vh;margin:0;color:var(--ink);background:radial-gradient(circle at 10% 0%,rgba(93,71,170,.24),transparent 32rem),linear-gradient(135deg,var(--bg),var(--bg2));overflow-x:hidden}
button{font:inherit}.ambient{position:fixed;border-radius:50%;filter:blur(90px);opacity:.18;pointer-events:none}.ambient-a{width:420px;height:420px;background:#598fff;right:-130px;top:90px}.ambient-b{width:360px;height:360px;background:#aa5df3;left:-140px;bottom:40px}
.topbar{height:86px;padding:0 clamp(18px,4vw,52px);display:grid;grid-template-columns:1fr auto 1fr;align-items:center;border-bottom:1px solid var(--line);background:rgba(7,11,28,.72);backdrop-filter:blur(20px);position:relative;z-index:5}.brand{display:flex;gap:10px;align-items:center;color:inherit;text-decoration:none;width:max-content}.brand-mark{display:grid;place-items:center;width:40px;height:40px;border:1px solid rgba(243,200,107,.45);border-radius:12px;color:var(--gold);font-weight:950;font-size:.8rem;letter-spacing:.08em;background:linear-gradient(145deg,rgba(243,200,107,.14),transparent)}.brand strong,.brand small{display:block}.brand strong{font-size:.84rem}.brand small{font-size:.69rem;color:var(--muted);margin-top:2px}.title-lockup{text-align:center}.title-lockup span{display:block;color:var(--gold);text-transform:uppercase;font-size:.65rem;letter-spacing:.22em;font-weight:900}.title-lockup strong{font-family:Georgia,"Times New Roman",serif;font-size:1.28rem;letter-spacing:.02em}.icon-button{justify-self:end;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;color:var(--ink);background:rgba(255,255,255,.04);cursor:pointer;font-size:1.1rem}.icon-button[aria-pressed="false"]{color:var(--muted)}
.layout{width:min(1280px,calc(100% - 32px));margin:34px auto 70px;display:grid;grid-template-columns:minmax(600px,1fr) 340px;gap:24px;align-items:start;position:relative;z-index:2}.game-shell{background:linear-gradient(150deg,rgba(28,32,69,.96),rgba(15,18,43,.95));border:1px solid var(--line);border-radius:28px;padding:22px;box-shadow:var(--shadow);overflow:hidden}.mode-row,.puzzle-heading,.difficulty-row,.tool-row,.number-pad{display:flex;align-items:center}.mode-row{justify-content:space-between;gap:14px}.segmented{display:flex;background:rgba(0,0,0,.23);padding:4px;border-radius:14px;border:1px solid var(--line)}.mode-tab{border:0;background:transparent;color:var(--muted);padding:10px 18px;border-radius:10px;cursor:pointer;font-weight:850}.mode-tab.is-active{background:linear-gradient(135deg,#2f4985,#623a81);color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}.daily-button{border:1px solid rgba(243,200,107,.3);background:rgba(243,200,107,.09);color:var(--gold);border-radius:13px;padding:10px 14px;font-weight:850;cursor:pointer}.daily-button span{margin-right:5px}.puzzle-heading{justify-content:space-between;gap:20px;margin:22px 0 12px}.eyebrow{margin:0 0 5px;color:var(--gold);font-size:.66rem;font-weight:950;letter-spacing:.18em}.puzzle-heading h1{font:700 clamp(1.9rem,3vw,2.6rem)/1.05 Georgia,"Times New Roman",serif;margin:0}.status-pills{display:flex;gap:7px}.status-pills>span{min-width:78px;border:1px solid var(--line);background:rgba(255,255,255,.035);border-radius:12px;padding:7px 9px;text-align:center}.status-pills small,.completion-stats small{display:block;color:var(--muted);font-size:.55rem;letter-spacing:.12em}.status-pills strong{font-size:.86rem}.difficulty-row{gap:7px;margin-bottom:14px}.difficulty-row button{border:1px solid var(--line);background:rgba(255,255,255,.025);color:var(--muted);padding:7px 12px;border-radius:999px;font-size:.78rem;font-weight:800;cursor:pointer}.difficulty-row button.is-active{color:#101326;background:var(--gold);border-color:transparent}
.board-wrap{position:relative;width:min(100%,620px);margin:auto}.board{width:100%;aspect-ratio:1;border-radius:18px;overflow:hidden;box-shadow:0 16px 35px rgba(0,0,0,.28);background:#0b0d18}.sudoku-board{display:grid;grid-template-columns:repeat(9,1fr);border:3px solid #0f1325}.sudoku-cell{position:relative;aspect-ratio:1;border:0;border-right:1px solid rgba(21,25,43,.28);border-bottom:1px solid rgba(21,25,43,.28);background:var(--cell);color:var(--cell-ink);font-weight:650;font-size:clamp(1.15rem,3.3vw,2rem);cursor:pointer;transition:background .12s ease,transform .12s ease}.sudoku-cell.given{font-weight:900;color:var(--given)}.sudoku-cell.peer{background:var(--peer)}.sudoku-cell.same{background:var(--same)}.sudoku-cell.selected{background:var(--selected);box-shadow:inset 0 0 0 3px rgba(95,65,15,.22)}.sudoku-cell.wrong{color:#b62e4c}.sudoku-cell.box-right{border-right:3px solid #1c2139}.sudoku-cell.box-bottom{border-bottom:3px solid #1c2139}.notes-grid{position:absolute;inset:5px;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);font-size:clamp(.42rem,1.4vw,.7rem);font-weight:800;color:#607090}.notes-grid span{display:grid;place-items:center}.kakuro-board{display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(7,1fr);border:3px solid #101325}.kakuro-cell,.kakuro-clue{position:relative;aspect-ratio:1;border-right:1px solid rgba(18,22,36,.35);border-bottom:1px solid rgba(18,22,36,.35)}.kakuro-cell{border-top:0;border-left:0;background:var(--cell);color:var(--cell-ink);font-size:clamp(1rem,3.7vw,2.1rem);font-weight:750;cursor:pointer}.kakuro-cell.selected{background:var(--selected);box-shadow:inset 0 0 0 3px rgba(95,65,15,.22)}.kakuro-cell.run-peer{background:var(--peer)}.kakuro-cell.invalid{color:#bd2c4d;background:#ffdce2}.kakuro-clue{background:#111624;color:#fff}.kakuro-clue::after{content:"";position:absolute;inset:0;background:linear-gradient(to top right,transparent 49.2%,rgba(255,255,255,.62) 50%,transparent 50.8%);pointer-events:none}.clue-down,.clue-right{position:absolute;font-weight:850;font-size:clamp(.48rem,1.5vw,.78rem);z-index:1}.clue-down{left:9%;bottom:8%}.clue-right{right:9%;top:8%}.pause-cover{position:absolute;inset:0;border-radius:18px;background:rgba(10,12,28,.93);backdrop-filter:blur(10px);display:grid;place-content:center;text-align:center;z-index:8}.pause-cover[hidden]{display:none}.pause-cover span{color:var(--gold);font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;font-weight:900}.pause-cover strong{font:700 2rem Georgia,serif;margin:8px 0 18px}.pause-cover button{justify-self:center;border:0;border-radius:12px;background:var(--gold);color:#171728;padding:10px 18px;font-weight:900;cursor:pointer}
.tool-row{justify-content:center;gap:8px;margin-top:15px}.tool-row button{width:78px;border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--ink);border-radius:13px;padding:9px 6px;cursor:pointer}.tool-row span,.tool-row small{display:block}.tool-row span{font-size:1.22rem;height:22px}.tool-row small{font-size:.65rem;color:var(--muted);font-weight:800;margin-top:3px}.tool-row button[aria-pressed="true"]{background:rgba(243,200,107,.14);border-color:rgba(243,200,107,.45)}.tool-row button[aria-pressed="true"] small{color:var(--gold)}.number-pad{justify-content:center;gap:7px;margin-top:13px}.number-pad button{width:min(9.2vw,58px);height:min(9.2vw,58px);max-height:58px;min-height:44px;border:1px solid rgba(243,200,107,.26);background:linear-gradient(160deg,rgba(255,255,255,.075),rgba(255,255,255,.02));color:var(--ink);border-radius:12px;font-size:1.22rem;font-weight:850;cursor:pointer}.number-pad button:hover,.number-pad button:focus-visible{border-color:var(--gold);outline:none;background:rgba(243,200,107,.12)}.keyboard-tip{text-align:center;color:var(--muted);font-size:.67rem;margin:12px 0 0}
.side-panel{display:grid;gap:16px}.art-card,.panel-card{border:1px solid var(--line);border-radius:21px;overflow:hidden;background:var(--panel);box-shadow:0 18px 45px rgba(0,0,0,.18)}.art-card{position:relative;min-height:228px}.art-card img{width:100%;height:228px;object-fit:cover;display:block}.art-card::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(10,12,27,.93),transparent 64%)}.art-copy{position:absolute;z-index:2;left:18px;right:18px;bottom:16px}.art-copy span,.art-copy strong{display:block}.art-copy span{color:var(--gold);font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;font-weight:900}.art-copy strong{font:700 1.12rem/1.15 Georgia,serif;margin-top:4px}.panel-card{padding:18px}.panel-kicker{color:var(--muted);font-size:.61rem;letter-spacing:.16em;font-weight:900}.date-line{font:700 1.3rem Georgia,serif;margin-top:6px}.daily-card p{color:var(--muted);font-size:.82rem;line-height:1.5}.daily-card button{width:100%;border:0;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--gold2));color:#181626;padding:11px 13px;font-weight:900;display:flex;justify-content:space-between;cursor:pointer}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;margin-top:12px}.stat-grid div{text-align:center;padding:10px 4px;background:rgba(255,255,255,.035);border-radius:12px}.stat-grid strong,.stat-grid span{display:block}.stat-grid strong{font-size:1.1rem}.stat-grid span{font-size:.58rem;color:var(--muted);margin-top:3px}.theme-options{display:grid;grid-template-columns:1fr;gap:7px;margin-top:11px}.theme-options button{display:flex;align-items:center;gap:9px;border:1px solid var(--line);background:rgba(255,255,255,.025);color:var(--muted);border-radius:11px;padding:8px 10px;cursor:pointer;font-weight:800;font-size:.76rem}.theme-options button.is-active{color:var(--ink);border-color:rgba(243,200,107,.36)}.swatch{width:20px;height:20px;border-radius:7px;border:1px solid rgba(255,255,255,.25)}.swatch.midnight{background:linear-gradient(135deg,#121936,#6d3f87)}.swatch.paper{background:linear-gradient(135deg,#f4ecd9,#b9785c)}.swatch.ocean{background:linear-gradient(135deg,#0c3040,#37b9c4)}
.complete-dialog{width:min(440px,calc(100% - 28px));border:1px solid rgba(243,200,107,.34);border-radius:24px;background:linear-gradient(160deg,#181a3b,#2d1741);color:var(--ink);padding:28px;box-shadow:0 36px 90px rgba(0,0,0,.55);text-align:center}.complete-dialog::backdrop{background:rgba(4,6,18,.72);backdrop-filter:blur(6px)}.complete-burst{font-size:2.2rem;color:var(--gold)}.complete-dialog h2{font:700 2rem Georgia,serif;margin:8px 0}.complete-dialog>p:not(.eyebrow){color:var(--muted)}.completion-stats{display:flex;justify-content:center;gap:10px;margin:18px 0}.completion-stats span{min-width:90px;padding:10px;border:1px solid var(--line);border-radius:13px}.completion-stats strong{display:block;margin-top:3px}.dialog-actions{display:flex;gap:8px}.dialog-actions button{flex:1;border:0;border-radius:12px;background:var(--gold);color:#181628;padding:11px;font-weight:900;cursor:pointer}.dialog-actions .secondary{background:rgba(255,255,255,.06);color:var(--ink);border:1px solid var(--line)}
body[data-theme="paper"]{--bg:#30211c;--bg2:#5b3830;--panel:rgba(67,45,38,.92);--panel-solid:#4a3029;--ink:#fff7e8;--muted:#d1bdae;--gold:#f4cf76;--blue:#9ab9c6;--plum:#c99189;--line:rgba(255,240,222,.16);--cell:#f6ead4;--cell-ink:#382f2a;--given:#2f2925;--selected:#f2bd62;--peer:#e9d7bd;--same:#dec9a6}
body[data-theme="ocean"]{--bg:#061c27;--bg2:#103c4a;--panel:rgba(9,45,58,.9);--panel-solid:#0c3443;--ink:#efffff;--muted:#a2c8ce;--gold:#f1d77a;--blue:#68d8de;--plum:#75b7de;--line:rgba(181,240,243,.15);--cell:#e8f5f2;--cell-ink:#133039;--given:#14323a;--selected:#f0d66d;--peer:#cce8e7;--same:#b5dfe0}
@media(max-width:980px){.layout{grid-template-columns:1fr;width:min(760px,calc(100% - 24px));margin-top:20px}.side-panel{grid-template-columns:repeat(2,1fr)}.art-card{grid-column:span 2}.art-card img{height:250px}.theme-card{display:none}}
@media(max-width:640px){.topbar{height:70px;padding:0 14px;grid-template-columns:1fr auto}.title-lockup{display:none}.layout{width:100%;margin:0;display:block}.game-shell{border-radius:0;padding:14px 10px 18px;border-left:0;border-right:0}.side-panel{display:grid;grid-template-columns:1fr;padding:14px}.art-card{grid-column:auto}.puzzle-heading{align-items:flex-end}.status-pills>span{min-width:58px;padding:6px}.status-pills>span:nth-child(3){display:none}.puzzle-heading h1{font-size:1.72rem}.sudoku-cell{font-size:clamp(1rem,6vw,1.55rem)}.tool-row{gap:5px}.tool-row button{width:18.6%;padding:8px 2px}.number-pad{gap:4px}.number-pad button{width:10.3vw;height:10.3vw;min-height:38px}.keyboard-tip{display:none}.difficulty-row{margin-bottom:10px}.mode-row{padding:0 2px}.daily-button{font-size:.72rem}.art-card{display:none}.complete-dialog{padding:22px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}