:root{--bg:#0f1117;--panel:#161b26;--panel-2:#1e2433;--border:#2a3145;--text:#e6e9f0;--muted:#8a93a6;--accent:#5b8cff;--accent-2:#7c5cff}*{box-sizing:border-box}body,html{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}button,input,select{font:inherit}button{cursor:pointer}.app{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);background:var(--panel)}.tabs{display:flex;gap:8px}.tab{padding:6px 14px;border-radius:8px;border:1px solid var(--border);background:var(--panel-2);color:var(--muted)}.tab.active{color:#fff;background:var(--accent);border-color:var(--accent)}.main{flex:1 1;padding:20px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px}.form-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:14px;align-items:center}.form-row label{color:var(--muted);font-size:14px}input[type=number],input[type=text],select,textarea{background:var(--panel-2);border:1px solid var(--border);color:var(--text);border-radius:8px;padding:8px 10px;outline:none}textarea{font:inherit;resize:vertical}.primary{background:var(--accent);border:none;color:#fff;padding:9px 16px;border-radius:8px;font-weight:600}.secondary{background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:8px 12px;border-radius:8px}.candidates{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));grid-gap:16px;gap:16px}.candidate-card{background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:10px;text-align:center}.candidate-card:hover{border-color:var(--accent)}.candidate-card canvas{image-rendering:pixelated;border-radius:4px}.editor-layout{display:grid;grid-template-columns:160px 1fr 220px 140px;grid-gap:16px;gap:16px;min-height:520px}.frame-column,.palette-column,.tool-column{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:12px}.tool-button{display:block;width:100%;margin-bottom:8px;text-align:left;padding:8px 10px;border-radius:8px;background:var(--panel-2);border:1px solid var(--border);color:var(--text)}.tool-button.active{background:var(--accent);border-color:var(--accent);color:#fff}.canvas-wrap{display:flex;align-items:center;justify-content:center;background:var(--panel);border:1px solid var(--border);border-radius:12px;min-height:520px}.editor-canvas{image-rendering:pixelated;background:#222;border:1px solid var(--border)}.swatches{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:6px;gap:6px}.swatch{aspect-ratio:1;border-radius:4px;border:2px solid transparent}.swatch.active{border-color:#fff}.frame-item{margin-bottom:6px;padding:6px;border-radius:6px;border:1px solid transparent;cursor:pointer}.frame-item.active{border-color:var(--accent)}.error{color:#ff7b7b;margin-bottom:12px;white-space:pre-wrap}.muted{color:var(--muted);font-size:13px}.candidate-item{min-width:0}.candidate-placeholder{gap:12px}.candidate-error-card,.candidate-placeholder{min-height:170px;display:flex;flex-direction:column;align-items:center;justify-content:center}.candidate-error-card{gap:8px}@keyframes spin{to{transform:rotate(1turn)}}.upscale-row{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:8px}.upscale-button{font-size:12px;padding:4px 8px}.upscale-button:disabled{opacity:.6;cursor:not-allowed}.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}.sidebar{display:flex;flex-direction:column;gap:8px;padding:14px 12px;background:var(--panel);border-right:1px solid var(--border);position:-webkit-sticky;position:sticky;top:0;height:100vh;overflow-y:auto}.brand{font-weight:700;font-size:18px;padding:4px 8px 14px}.nav-title{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em;padding:8px 8px 4px}.nav-item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;padding:9px 10px;border-radius:8px;background:transparent;border:1px solid transparent;color:var(--text);cursor:pointer}.nav-item:hover{background:var(--panel-2)}.nav-item.active{background:var(--accent);border-color:var(--accent);color:#fff}.nav-icon{width:18px;text-align:center}.nav-spacer{flex:1 1}.content{padding:20px;overflow-y:auto}.module[hidden]{display:none}.global-error{padding:10px 14px;border-radius:10px;background:hsla(0,100%,74%,.1)}.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));grid-gap:16px;gap:16px}.project-card{background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:12px;display:flex;flex-direction:column;gap:10px}.project-thumb{cursor:pointer;display:flex;align-items:center;justify-content:center;min-height:72px;background:#222;border-radius:8px}.project-thumb canvas{image-rendering:pixelated}.project-name{font-weight:600;cursor:pointer}.project-actions{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}.link-button{background:none;border:none;padding:0 2px;color:var(--accent);cursor:pointer;text-decoration:underline}.editor-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--muted)}.spinner{width:28px;height:28px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));grid-gap:16px;gap:16px}.gallery-card{background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:10px;display:flex;flex-direction:column;gap:8px;min-width:0}.gallery-thumb{position:relative;aspect-ratio:1;background:#222;border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden;cursor:pointer}.gallery-thumb img{max-width:100%;max-height:100%;object-fit:contain}.gallery-thumb:hover{border:1px solid var(--accent);box-sizing:border-box}.gallery-broken{color:var(--muted);font-size:12px;text-align:center;line-height:1.6}.gallery-badge{position:absolute;top:6px;right:6px;font-size:11px;padding:2px 8px;border-radius:999px;background:hsla(0,100%,74%,.85);color:#fff}.gallery-info{display:flex;flex-direction:column;gap:6px;min-width:0}.gallery-prompt{font-size:13px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:39px}.gallery-tags{display:flex;flex-wrap:wrap;gap:6px}.gallery-tag{font-size:11px;padding:1px 8px;border-radius:999px;background:var(--panel);border:1px solid var(--border);color:var(--muted)}.gallery-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;color:var(--muted);font-size:12px}.gallery-remaining{color:#ffb86b;white-space:nowrap}.gallery-remaining.soon{color:#ff7b7b}.gallery-remaining.expired{color:var(--muted);text-decoration:line-through}.secondary.danger{color:#ff7b7b;border-color:hsla(0,100%,74%,.35)}.lightbox{position:fixed;inset:0;background:rgba(5,7,12,.78);display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.lightbox-card{background:var(--panel-2);border:1px solid var(--border);border-radius:14px;max-width:min(94vw,900px);max-height:92vh;display:flex;flex-direction:column;overflow:auto}.lightbox-image-wrap{background:#222;display:flex;align-items:center;justify-content:center;padding:18px}.lightbox-image-wrap img{max-width:100%;max-height:62vh;object-fit:contain}.lightbox-info{padding:14px 18px 16px;display:flex;flex-direction:column;gap:8px}.lightbox-prompt{font-size:14px;line-height:1.6;white-space:pre-wrap;word-break:break-word}.lightbox-actions{display:flex;align-items:center;gap:10px;margin-top:8px}.lightbox-actions .primary{text-decoration:none}