:root{color-scheme:dark;--bg:#1d2124;--panel:#292c2f;--button:#303234;--button-hi:#3b3d3f;--grid:#1b1f22;--line:#444b50;--outer:#687178;--chalk:#a6a6a3;--text:#f0f0ed;--muted:#969b9d;--green:#16b889;--green-bright:#27dba4;--green-soft:rgba(22,184,137,.14);--red:#ef3e61;--blue:#4389ec}
*{box-sizing:border-box;margin:0;padding:0;font-family:Arial,Helvetica,sans-serif;touch-action:manipulation}html,body{min-height:100%;background:var(--bg);color:var(--text)}body{display:flex;justify-content:center;overflow-x:hidden}button,select{font:inherit;color:inherit}button{cursor:pointer}.app-shell{width:100%;max-width:540px;min-height:100dvh;position:relative}.screen{display:none;min-height:100dvh}.screen.active{display:flex}.brand{display:flex;align-items:center;justify-content:center;gap:.42em;font-size:1.7rem;font-weight:800;line-height:1}.brand i{display:block;width:.35em;height:.35em;border-radius:50%;background:#ddd}.brand .three{color:var(--red)}.brand .two{color:var(--blue)}.brand .one{color:var(--green)}.brand-large{font-size:2.2rem}.home-screen{flex-direction:column;align-items:center;justify-content:center;padding:24px}.home-screen>.brand{margin-top:auto}.home-actions{display:grid;gap:10px;width:min(250px,75vw);margin:auto 0}.action-primary,.action-secondary{min-height:44px;border-radius:10px;font-weight:800;letter-spacing:.02em}.action-primary{border:0;background:var(--green);color:#fff}.action-primary:disabled{opacity:.4}.action-secondary{border:1px solid var(--green);background:transparent;color:var(--green)}.bottom-nav{width:100%;height:55px;background:var(--panel);display:flex;align-items:center;justify-content:space-between;border-radius:12px;padding:0 10px}.home-screen .bottom-nav,.profile-screen>.bottom-nav{margin-top:auto}.nav-btn{width:50%;height:100%;border:0;background:none;color:#a6adae}.nav-btn.active{color:var(--green)}svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.nav-btn svg{fill:currentColor;stroke:none}.simple-header,.game-titlebar{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;width:100%}.simple-header{height:64px;padding:8px}.simple-header>:last-child{justify-self:end}.icon-text-btn,.header-button{border:0;border-radius:11px;background:var(--button);padding:0 14px;height:44px;font-size:.86rem}.profile-screen{flex-direction:column;padding:8px}.profile-content{padding:32px 10px}.profile-content h1{text-align:center;font-size:1.5rem;margin-bottom:24px}.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.profile-grid article{background:var(--panel);border-radius:10px;padding:22px 10px;text-align:center}.profile-grid strong{display:block;color:var(--green);font-size:1.8rem}.profile-grid span{color:var(--muted);font-size:.8rem}.profile-detail{display:flex;justify-content:space-between;padding:17px 4px;border-bottom:1px solid var(--line);color:var(--muted)}.profile-detail strong{color:var(--text)}
.game-screen{flex-direction:column;padding:5px;min-height:100dvh}.game-header{position:relative}.game-titlebar{height:50px}.game-titlebar .header-button:last-child{justify-self:end}.game-statusbar{height:26px;display:grid;grid-template-columns:1.3fr .75fr 1fr auto;align-items:center;gap:7px;background:var(--panel);padding:2px 4px;color:#9da2a3;font-size:.72rem}.progress-wrap{display:flex;align-items:center;gap:4px}.progress-track{height:9px;flex:1;background:#e3e5e3;border-radius:6px;overflow:hidden}.progress-track span{display:block;width:0;height:100%;background:var(--green);transition:width .25s}.progress-wrap small{color:var(--green)}#error-count{color:var(--red)}.timer-button{height:23px;display:flex;align-items:center;gap:3px;border:0;background:none;color:#9da2a3;font-size:.72rem}.timer-button svg{width:17px;height:17px;fill:currentColor;stroke:none}.settings-menu{position:absolute;right:0;top:50px;z-index:50;width:205px;background:#282c2f;border:1px solid #4b5256;padding:10px;border-radius:8px;box-shadow:0 10px 24px #0009;display:none}.settings-menu.open{display:grid;gap:10px}.settings-menu label{display:flex;justify-content:space-between;align-items:center;font-size:.82rem}.settings-menu input{display:none}.settings-menu label span{width:34px;height:19px;border-radius:12px;background:#616669;position:relative}.settings-menu label span:after{content:"";position:absolute;width:15px;height:15px;border-radius:50%;background:#eee;left:2px;top:2px;transition:.18s}.settings-menu input:checked+span{background:var(--green)}.settings-menu input:checked+span:after{left:17px}
.board-container{width:100%;margin-top:3px;background:var(--grid);border:3px solid var(--outer);overflow:hidden}.grid{display:grid;width:100%;background:var(--grid)}.cell,.target{aspect-ratio:1;display:flex;align-items:center;justify-content:center;position:relative;user-select:none;-webkit-user-select:none}.cell{background:var(--grid);border:.5px solid var(--line);font-size:clamp(1.35rem,7vw,2.25rem);font-weight:500;color:#f4f4f1;cursor:pointer}.cell.fixed{color:var(--green);font-weight:700}.cell.peer-selected{background:#292d30}.cell.selected{background:#3b3e40;box-shadow:inset 0 0 0 2px #dadbd7;z-index:2}.cell.rule-error{color:var(--red);background:rgba(239,62,97,.12)}.cell.line-solved{background:var(--green-soft)}.target{background:#858585;border:.5px solid #737779;color:#d8d8d5;cursor:pointer;font-weight:700}.target .val{font-size:clamp(1rem,4.5vw,1.45rem)}.target .separator{margin:0 1px;color:#c3c3c0}.target .max-val{font-size:clamp(.85rem,3.7vw,1.2rem);color:#c3c3c0}.target.selected-line{background:#696d6f;box-shadow:inset 0 0 0 2px #dadbd7}.target.line-solved{background:rgba(22,184,137,.35)}.target.over .val{color:var(--red)}.corner{background:var(--grid);border:0}.notes-grid{display:flex;gap:1px;font-size:clamp(.55rem,2.5vw,.8rem);font-weight:700}.notes-grid span{color:#eee}.cell.board-enter{animation:gridSweep .34s ease-out both;animation-delay:var(--sweep-delay)}@keyframes gridSweep{from{opacity:0;transform:translateY(12px);background:#3e4447}to{opacity:1;transform:none;background:var(--grid)}}.cell.line-success-wave,.target.line-success-wave{animation:lineWave .42s ease-out both;animation-delay:var(--line-delay)}@keyframes lineWave{0%{background:var(--green-bright);box-shadow:inset 0 0 0 1px #81f6d2}100%{background:rgba(22,184,137,.18);box-shadow:none}}
.game-tools{margin-top:9px}.tool-row{height:48px;display:grid;grid-template-columns:repeat(6,1fr);gap:3px}.number-btn,.tool-btn{border:0;border-radius:9px;background:var(--button);font-size:1.35rem}.number-btn{font-weight:700}.tool-btn{display:flex;align-items:center;justify-content:center;color:#ddd}.tool-btn.active{background:var(--green);color:#fff}.combinations-panel{display:none;margin-top:7px;min-height:168px;background:var(--panel);border:2px solid var(--green);padding:6px;overflow:auto}.combinations-panel.open{display:grid;align-content:start;gap:4px}.combination-row{display:grid;grid-template-columns:1fr 54px;min-height:42px;align-items:center}.combination-equation{padding:8px 14px;font-size:clamp(.9rem,4vw,1.08rem);white-space:nowrap}.combination-trash{height:38px;border:0;border-radius:8px;background:var(--button-hi);color:#ddd;display:flex;align-items:center;justify-content:center}.combination-trash svg{width:20px}.combination-row.manual-discard .combination-equation,.combination-row.auto-discard .combination-equation{text-decoration:line-through;text-decoration-thickness:2px;color:#a7aaab}.combination-row.auto-discard{opacity:.55}.combination-row.auto-discard .combination-trash{visibility:hidden}
.modal-overlay,.pause-overlay{position:fixed;inset:0;z-index:200;background:rgba(18,21,23,.94);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity .18s}.modal-overlay.open,.pause-overlay.open{opacity:1;pointer-events:auto}.modal{width:min(330px,90vw);background:var(--panel);border:1px solid #555b5e;border-radius:12px;padding:20px;display:grid;gap:16px}.modal h2{text-align:center}.modal label{display:grid;gap:6px;color:var(--muted);font-size:.82rem}.modal select{height:44px;border:1px solid #555b5e;border-radius:8px;background:var(--button);padding:0 10px}.modal-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.modal-actions button,.message-modal>button{min-height:42px;border-radius:8px}.modal-actions>button:first-child{border:1px solid #555b5e;background:transparent}.message-modal p{text-align:center;color:var(--muted);line-height:1.4}.pause-overlay{flex-direction:column;gap:50px}.pause-overlay .action-primary{width:220px}
body.light-mode{--bg:#e7e6e2;--panel:#d5d4d0;--button:#c5c4c0;--button-hi:#b7b6b2;--grid:#f1f0ec;--line:#b9b9b5;--outer:#777b7c;--text:#272a2c;--muted:#666b6d;--chalk:#696969;color-scheme:light}body.light-mode .cell{color:#272a2c}body.light-mode .cell.fixed{color:#087c60}body.light-mode .target{background:#9a9a96;color:#fff}
@media(min-width:620px){.app-shell{padding:10px}.game-screen{justify-content:flex-start}.board-container{margin-top:6px}.home-screen,.profile-screen{border-left:1px solid #2d3235;border-right:1px solid #2d3235}}
@media(max-height:690px){.game-titlebar{height:44px}.game-tools{margin-top:5px}.tool-row{height:43px}.combinations-panel{min-height:130px}.header-button{height:38px}}
.target.tooltip-active{box-shadow:inset 0 0 0 2px var(--green)}
.game-titlebar .header-button{width:42px;height:42px;padding:0;display:flex;align-items:center;justify-content:center;color:#d5d7d7}.game-titlebar .header-button svg{width:22px;height:22px}.game-statusbar{grid-template-columns:1fr .85fr 1.05fr auto}.progress-wrap{max-width:76px}.progress-track{height:7px}.target{background:#3b3e40;border-color:#4a4e50}.target.selected-line{background:#474b4d}.target.line-solved{background:#3b3e40}.target.line-solved .val{color:var(--green-bright)}.corner{background:#3b3e40;border:.5px solid #4a4e50}.combination-row{min-height:32px}.combination-equation{padding:3px 10px}.combination-trash{height:29px}.combinations-panel.open{gap:0}.cell.same-value{background:rgba(22,184,137,.24)}.cell.same-value.selected{background:rgba(39,219,164,.34)}
.cell.rule-error.same-value{background:rgba(239,62,97,.16)}