:root[data-theme=sand]{--bg:#f7f2e9;--surface:#fffcf6;--ink:#514134;--muted:#8d7c6b;--accent:#866345;--accent-hover:#6c4c33;--line:#e7dacc;--soft:#f0e5d6;--peer:#f7eee2;--same:#e5d6bd;--selected:#dcc4a1;--board-line:#ded1c0;--board-heavy:#7d6b57}
:root[data-theme=night]{color-scheme:dark;--bg:#171e25;--surface:#222c35;--ink:#e0e8e9;--muted:#9caeb4;--accent:#9abfb0;--accent-hover:#aecfbe;--line:#37434c;--soft:#2a3740;--peer:#293842;--same:#3c574e;--selected:#4c6b58;--error:#f5a39a;--error-bg:#513c3d;--board-line:#47555d;--board-heavy:#a6b6b3}
.panel,select,input[type=number],.keypad>button,.stat-tile,.record-card,.question-card,.empty-state,dialog{background:var(--surface)}
.primary{color:var(--surface)}.header-inner{gap:32px}.header-inner nav{gap:21px}.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;white-space:nowrap}.language-button{border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:4px 9px;font-size:11px;min-height:31px}.sync-badge{font-size:10px;color:var(--muted);display:flex;align-items:center;gap:5px}.sync-badge i{height:5px;width:5px;background:var(--accent);border-radius:50%}.all-saves-link{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--muted);margin-top:15px}.all-saves-link>svg{width:14px;height:14px}.all-saves-link>svg:last-child{margin-left:auto}.full-board-notice{padding:8px 12px;font-size:11px;color:var(--accent);background:var(--soft);border-radius:6px;margin-bottom:10px}.saved-list{display:grid;gap:16px}.saved-card{display:flex;gap:23px;align-items:center}.saved-icon{width:55px;height:65px;background:var(--soft);border-radius:9px;display:grid;place-items:center}.saved-icon svg{width:27px;height:27px;color:var(--accent)}.saved-info{flex:1;min-width:0}.saved-info h3{font-size:15px}.saved-info p{font-size:11px;color:var(--muted);margin-top:6px}.saved-info small{font-size:10px;color:var(--muted)}.saved-progress{height:4px;background:var(--soft);border-radius:3px;overflow:hidden;max-width:250px;margin:13px 0 6px}.saved-progress i{display:block;background:var(--accent);height:100%}.saved-actions{display:flex;gap:13px;align-items:center}.appearance-controls{border-bottom:1px solid var(--line);padding-bottom:7px;margin-bottom:28px}.appearance-controls>h2{margin-bottom:23px}.theme-options{display:grid;grid-template-columns:repeat(3,1fr);gap:11px}.theme-option{background:transparent;border:1px solid var(--line);padding:10px;border-radius:9px;display:flex;flex-direction:column;gap:9px;align-items:center;font-size:11px}.theme-option.chosen{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.theme-swatch{width:100%;height:48px;border-radius:4px;display:flex;gap:5px;align-items:center;justify-content:center}.theme-swatch i{width:14px;height:23px;display:block;border-radius:3px}.swatch-paper{background:#f7f8f5}.swatch-paper i{background:#315e4e}.swatch-paper i:nth-child(2){background:#c7ddba}.swatch-paper i:nth-child(3){background:#e3e7e0}.swatch-sand{background:#f7f2e9}.swatch-sand i{background:#866345}.swatch-sand i:nth-child(2){background:#dcc4a1}.swatch-sand i:nth-child(3){background:#e7dacc}.swatch-night{background:#171e25}.swatch-night i{background:#9abfb0}.swatch-night i:nth-child(2){background:#4c6b58}.swatch-night i:nth-child(3){background:#37434c}.collection-breadcrumb{display:flex;align-items:center;gap:16px;margin-bottom:28px}.collection-breadcrumb>.button{font-size:11px;min-height:38px;padding:8px 16px}.collection-breadcrumb>span{font-size:10px;color:var(--muted)}.record-export-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}.record-export-actions .button{font-size:11px;min-height:40px;padding:9px 17px}.pdf-help{font-size:11px;color:var(--muted);margin-bottom:20px}.sync-layout{display:grid;grid-template-columns:minmax(0,610px) minmax(230px,1fr);gap:35px}.sync-panel{padding:32px}.sync-panel p{font-size:12px;line-height:2;color:var(--muted);margin-top:12px}.sync-panel h3{font-size:15px;font-weight:500}.sync-panel>.button{margin-top:22px}.sync-intro-icon{height:49px;width:49px;display:grid;place-items:center;border-radius:12px;background:var(--soft);color:var(--accent);margin-bottom:22px}.sync-intro-icon svg{width:27px;height:27px}.sync-panel hr{border:0;border-top:1px solid var(--line);margin:29px 0}.sync-connected{display:flex;align-items:center;gap:15px}.sync-connected>svg{height:34px;width:34px;color:var(--accent)}.sync-status{margin-top:5px!important;font-size:11px!important}.sync-main-actions,.pair-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:23px}.sync-main-actions .button,.pair-actions .button{font-size:11px;padding:10px 18px}.field-label{display:block;font-size:11px;margin-top:21px;margin-bottom:8px}textarea{width:100%;font:inherit;color:var(--ink);padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);resize:vertical;font-size:12px;word-break:break-all}.pair-qr{width:184px;height:184px;background:white;border:8px solid white;border-radius:8px;margin:22px 0}.pair-qr:empty{display:none}.pair-qr svg{width:100%;height:100%}.disconnect{margin-top:25px;color:var(--muted)}.sync-explainer{margin-top:0;height:fit-content}.sync-explainer h3{font-size:15px}.settings-aside .hint-card .primary{color:var(--surface)}
:root[data-theme=sand] .progress-card,:root[data-theme=sand] .hint-card,:root[data-theme=sand] .best-tile{background:#f0e5d6;border-color:#e7dacc}:root[data-theme=sand] .cell.given{color:#514134}:root[data-theme=sand] .difficulty-tag{background:#eaddc7;color:#765b3c}
:root[data-theme=night] .given,:root[data-theme=night] .home-board>span{color:#e0e8e9}:root[data-theme=night] .home-board{background:var(--surface)}:root[data-theme=night] .segmented{background:var(--bg)}:root[data-theme=night] .segmented .chosen{background:var(--soft);border-color:var(--line)}:root[data-theme=night] .progress-card,:root[data-theme=night] .hint-card,:root[data-theme=night] .best-tile,:root[data-theme=night] .rule-option.chosen,:root[data-theme=night] .answer-notice{background:var(--soft);border-color:var(--line)}:root[data-theme=night] .progress-track{background:var(--line)}:root[data-theme=night] .progress-track i{background:#9abfb0}:root[data-theme=night] .difficulty-tag{background:#354a41;color:#c1d7c8}:root[data-theme=night] .keypad>button.used{background:var(--bg);color:var(--muted)}:root[data-theme=night] .pause-overlay{background:#1b252fef}:root[data-theme=night] .hint-card p,:root[data-theme=night] .timer-wrap,:root[data-theme=night] .notes,:root[data-theme=night] .tool{color:var(--muted)}:root[data-theme=night] .cell.selected{box-shadow:inset 0 0 0 2px #b7d1a9}:root[data-theme=night] .completion-stats{background:var(--soft)}
html[lang=en] .home-copy h1{font-size:43px;line-height:1.3;letter-spacing:-1px}html[lang=en] .home-links h3{font-size:12px}html[lang=en] .home-links p{font-size:10px;line-height:1.7}
@media(max-width:1000px){.header-inner{gap:23px}.header-inner nav{gap:15px}.sync-badge{display:none}.header-actions{gap:0}.record-export-actions{max-width:250px}.sync-layout{grid-template-columns:1fr 250px;gap:23px}}
@media(max-width:800px){.saved-card{padding:22px;gap:18px}.saved-actions .button{font-size:11px;min-height:39px;padding:8px 12px}.sync-layout{grid-template-columns:1fr}.sync-explainer{max-width:none}.header-inner{gap:22px}.header-inner nav{gap:12px}.header-actions{margin-left:0}}
@media(max-width:600px){.header-inner{position:relative;gap:13px}.header-inner:after{display:none}.header-actions{position:absolute;right:20px;top:15px;gap:10px}.sync-badge{display:flex;font-size:9px}.language-button{font-size:10px;min-height:30px}.header-inner nav{gap:0}.header-inner nav a{font-size:10px;padding:0 3px}.saved-card{flex-wrap:wrap;padding:21px;gap:16px}.saved-icon{height:48px;width:40px}.saved-info h3{font-size:13px}.saved-info p{font-size:10px}.saved-actions{width:100%;padding-left:56px;gap:10px}.saved-actions .button{flex:1;font-size:11px}.full-board-notice{font-size:10px}.collection-breadcrumb{gap:10px;flex-wrap:wrap;margin-bottom:23px}.collection-breadcrumb>.button{min-height:38px;padding:8px 13px;font-size:11px}.record-export-actions{max-width:none;margin-top:17px;flex-direction:column;gap:7px}.record-export-actions .button{min-height:34px;padding:6px 10px;font-size:10px}.record-export-actions svg{height:13px;width:13px}.pdf-help{font-size:10px;line-height:1.9}.sync-panel{padding:24px}.sync-panel p{font-size:11px}.sync-main-actions .button,.pair-actions .button{font-size:10px;padding:10px 14px}.sync-connected h2{font-size:15px}.pair-qr{margin:23px auto}.pair-actions .button{flex:1}.sync-intro-icon{height:43px;width:43px}.theme-option{padding:8px;font-size:10px}.theme-swatch{height:42px}.appearance-controls>.field{margin-top:17px}html[lang=en] .home-copy h1{font-size:36px}html[lang=en] .page-heading h1{font-size:24px}}
.local-preview-note{padding:13px 17px;margin-bottom:25px;border:1px solid var(--line);background:var(--soft);border-radius:8px;font-size:11px;color:var(--muted);line-height:1.9}
@page{size:A4 portrait;margin:0}
@media print{.paper-page{height:296.5mm;padding:12mm;background:#fff;color:#222}.paper-foot{justify-content:center;border-top:0}.paper-page .paper-head span,.paper-page .paper-label,.paper-page .paper-foot{color:#333}}