:root{--bg:#f5f3ee;--surface:#fffefa;--surface-muted:#ebe7df;--text:#4e5962;--text-muted:#6d7880;--text-strong:#14202a;--border:#d7d2c8;--border-strong:#bcb5a8;--accent:#2d6f72;--accent-alt:#7a4f8f;--danger:#c8553d;--mono:"SFMono-Regular", Consolas, "Liberation Mono", monospace;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}#root{min-height:100svh}button,select,input,textarea{letter-spacing:0}button:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid color-mix(in srgb, var(--accent) 42%, transparent);outline-offset:2px}.app-shell{grid-template-rows:auto 1fr;min-height:100svh;display:grid}.topbar{border-bottom:1px solid var(--border);background:color-mix(in srgb, var(--surface) 92%, white);justify-content:space-between;align-items:flex-end;gap:24px;padding:24px clamp(18px,4vw,42px);display:flex}.eyebrow{color:var(--accent);letter-spacing:0;text-transform:uppercase;margin:0 0 6px;font-size:13px;font-weight:800}.topbar h1{color:var(--text-strong);margin:0;font-size:clamp(26px,3vw,42px);line-height:1.04}.repo-link,.download-link{border:1px solid var(--border-strong);min-height:38px;color:var(--text-strong);background:var(--surface);white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:0 14px;text-decoration:none;display:inline-flex}.topnav{border:1px solid var(--border-strong);background:var(--surface);border-radius:8px;display:inline-flex;overflow:hidden}.topnav a{min-height:38px;color:var(--text-strong);align-items:center;padding:0 14px;font-weight:800;text-decoration:none;display:inline-flex}.topnav a+a{border-left:1px solid var(--border-strong)}.topnav .is-active{color:#fff;background:var(--accent)}.workspace{grid-template-columns:minmax(240px,300px) minmax(360px,1fr) minmax(280px,360px);min-height:0;display:grid}.convert-layout{grid-template-columns:minmax(320px,620px) minmax(280px,420px);align-content:start;gap:24px;padding:clamp(20px,4vw,42px);display:grid}.convert-panel{border:1px solid var(--border);background:var(--surface-muted);border-radius:8px;flex-direction:column;gap:18px;padding:22px;display:flex}.backend-badge{border:1px solid var(--border-strong);background:var(--surface);border-radius:8px;gap:6px;padding:12px;display:grid}.backend-badge span{font-weight:900}.backend-badge code{overflow-wrap:anywhere;color:var(--text-muted);font:12px/1.4 var(--mono)}.backend-badge.is-online span{color:var(--accent)}.task-error{border:1px solid var(--danger);background:color-mix(in srgb, var(--danger) 8%, var(--surface));border-radius:8px;padding:14px}.task-error strong{color:var(--danger);margin-bottom:6px;font-size:15px;display:block}.task-error p{color:var(--danger);overflow-wrap:anywhere;margin:0;font-size:13px;line-height:1.5}.task-logs{border:1px solid var(--border-strong);background:var(--surface);max-height:280px;font:12px/1.45 var(--mono);color:var(--text-muted);border-radius:8px;flex-direction:column;gap:3px;padding:10px;display:flex;overflow-y:auto}.task-logs span{overflow-wrap:anywhere}.backend-badge.is-offline span,.notice.is-error{color:var(--danger)}.file-drop{border:1px dashed var(--border-strong);min-height:156px;color:var(--text-strong);background:var(--surface);text-align:center;cursor:pointer;border-radius:8px;place-items:center;padding:24px}.file-drop input{opacity:0;pointer-events:none;width:1px;height:1px;position:absolute}.param-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;display:grid}.frames-field{grid-template-columns:1fr auto;align-items:end;gap:8px;display:grid}.frames-field .checkbox-label{margin-bottom:8px}.primary-button{color:#fff;background:var(--accent)}.notice{color:var(--text-muted);margin:0;font-size:14px;line-height:1.5}.progress-track{border:1px solid var(--border-strong);background:var(--surface);border-radius:999px;height:12px;overflow:hidden}.progress-track span{background:var(--accent);height:100%;display:block}.task-grid{color:var(--text-muted);grid-template-columns:minmax(88px,auto) 1fr;gap:10px 14px;display:grid}.task-grid strong{overflow-wrap:anywhere;color:var(--text-strong)}.control-panel,.calibration-panel{border-right:1px solid var(--border);background:var(--surface-muted);flex-direction:column;gap:18px;padding:22px;display:flex}.calibration-panel{border-right:0;border-left:1px solid var(--border)}.panel-title{color:var(--text-strong);align-items:center;gap:10px;display:flex}.panel-title h2{margin:0;font-size:17px}label{color:var(--text-muted);gap:8px;font-size:13px;font-weight:700;display:grid}select,input,textarea{box-sizing:border-box;border:1px solid var(--border-strong);width:100%;color:var(--text-strong);background:var(--surface);font:inherit;border-radius:8px}select,input{min-height:38px;padding:0 10px}input[type=range]{accent-color:var(--accent);padding:0}textarea{resize:vertical;min-height:180px;font:12px/1.45 var(--mono);padding:12px}output{color:var(--text-muted);font-size:13px;display:block}button{border:1px solid var(--border-strong);min-height:38px;color:var(--text-strong);background:var(--surface);font:inherit;cursor:pointer;border-radius:8px;justify-content:center;align-items:center;gap:8px;font-weight:700;display:inline-flex}button:disabled{cursor:not-allowed;opacity:.45}.segmented{border:1px solid var(--border-strong);border-radius:8px;grid-template-columns:1fr 1fr;display:grid;overflow:hidden}.segmented button{background:0 0;border:0;border-radius:0}.segmented button+button{border-left:1px solid var(--border-strong)}.segmented .is-active{color:#fff;background:var(--accent)}.button-row{grid-template-columns:1fr 1fr;gap:10px;display:grid}.checkbox-label{grid-template-columns:auto 1fr;align-items:center;gap:8px}.checkbox-label input[type=checkbox]{width:auto;min-height:auto}.ghost-button{color:var(--accent);background:color-mix(in srgb, var(--accent) 8%, var(--surface))}.stage{background:linear-gradient(90deg, #0c121c0a 1px, transparent 1px), linear-gradient(#0c121c0a 1px, transparent 1px), var(--surface);background-size:36px 36px;place-items:center;min-height:560px;padding:clamp(24px,5vw,58px);display:grid;position:relative;overflow:hidden}.stage-meta{flex-wrap:wrap;gap:8px;display:flex;position:absolute;top:20px;left:20px;right:20px}.stage-meta span{border:1px solid var(--border);color:var(--text-muted);background:color-mix(in srgb, var(--surface) 84%, transparent);border-radius:999px;padding:5px 9px;font-size:12px;font-weight:800}.loading{color:var(--text-muted);font-weight:700}.image-loading{text-align:center;gap:12px;width:min(52vw,360px);display:grid}.image-loading-message{color:var(--text-muted);font-size:14px;font-weight:700}.sprite-view{image-rendering:auto;filter:drop-shadow(0 28px 30px #141d2933);cursor:crosshair;background-repeat:no-repeat;width:min(52vw,430px);max-width:100%;position:relative}.sprite-view.is-setting-center{outline:2px dashed var(--danger);outline-offset:10px}.center-marker{background:var(--danger);width:14px;height:14px;box-shadow:0 0 0 2px var(--danger);border:2px solid #fff;border-radius:50%;position:absolute;transform:translate(-50%,-50%)}.disk{aspect-ratio:1;border:1px solid var(--border-strong);background:linear-gradient(90deg, transparent 49.5%, var(--border) 49.5% 50.5%, transparent 50.5%), linear-gradient(transparent 49.5%, var(--border) 49.5% 50.5%, transparent 50.5%), var(--surface);border-radius:50%;width:min(100%,260px);margin:4px auto 0;position:relative}.needle{background:var(--danger);transform-origin:0;width:42%;height:2px;position:absolute;top:50%;left:50%}.calibration-handle{min-width:34px;height:28px;min-height:28px;color:var(--text-strong);background:var(--surface);border-radius:999px;padding:0 7px;font-size:12px;position:absolute;transform:translate(-50%,-50%)}.calibration-handle.is-selected{color:#fff;background:var(--accent-alt)}.point-editor{grid-template-columns:1fr 1fr;gap:12px;display:grid}.cursor-canvas{z-index:9999;pointer-events:none;width:100%;height:100%;position:fixed;inset:0}@media (width<=1100px){.workspace,.convert-layout{grid-template-columns:1fr}.control-panel,.calibration-panel{border:0;border-bottom:1px solid var(--border)}.stage{order:-1;min-height:520px}.sprite-view{width:min(78vw,390px)}}@media (width<=720px){.topbar{flex-direction:column;align-items:flex-start}.topnav,.topnav a{width:100%}.topnav a{justify-content:center}.stage{min-height:440px;padding-inline:18px}.point-editor,.button-row,.param-grid{grid-template-columns:1fr}}