:root{--color-bg: #0f0f0f;--color-surface: #181818;--color-surface-alt: #202020;--color-surface-hover: #282828;--color-border: #2e2e2e;--color-border-subtle: #242424;--color-primary: #018eee;--color-primary-hover: #2da2f7;--color-primary-dim: rgba(1, 142, 238, .08);--color-primary-glow: rgba(1, 142, 238, .2);--color-text: #d4d4d4;--color-text-secondary: #888;--color-text-hint: #555;--color-danger: #c75050;--radius-sm: 6px;--radius: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow: 0 2px 8px rgba(0, 0, 0, .3);--shadow-lg: 0 6px 24px rgba(0, 0, 0, .4);--font-mono: "SF Mono", "Cascadia Code", "Fira Code", "JetBrains Mono", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans SC,Roboto,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{max-width:1160px;margin:0 auto;padding:20px 24px 64px}.app-header{text-align:center;padding:36px 0 24px}.app-header h1{font-size:24px;font-weight:700;letter-spacing:.02em;color:var(--color-text)}.app-header .subtitle{color:var(--color-text-hint);font-size:13px;margin-top:6px;letter-spacing:.01em}.section{margin-bottom:28px}.section-title{font-size:15px;font-weight:600;margin-bottom:14px;color:var(--color-text-secondary);letter-spacing:.02em}.hidden{display:none!important}.upload-zone{border:1.5px dashed var(--color-border);border-radius:var(--radius-lg);padding:56px 24px;text-align:center;cursor:pointer;background:var(--color-surface)}.upload-zone:hover,.upload-zone.dragover{border-color:var(--color-primary);background:var(--color-surface-alt)}.upload-zone__icon{color:var(--color-text-hint);margin-bottom:16px}.upload-zone:hover .upload-zone__icon,.upload-zone.dragover .upload-zone__icon{color:var(--color-text-secondary)}.upload-zone__content p{color:var(--color-text-secondary);font-size:14px;line-height:1.8}.upload-zone__link{color:var(--color-primary);cursor:pointer;text-decoration:underline;text-underline-offset:2px;font-weight:500}.upload-zone__link:hover{color:var(--color-primary-hover)}.upload-zone__hint{font-size:12px!important;color:var(--color-text-hint)!important;margin-top:6px}.editor-layout{display:flex;gap:16px;align-items:flex-start}.editor-sidebar{width:216px;flex-shrink:0;display:flex;flex-direction:column;gap:12px}.editor-main{flex:1;min-width:0}.controls-panel{background:var(--color-surface);border-radius:var(--radius);padding:14px;border:1px solid var(--color-border-subtle)}.controls-panel h3{font-size:11px;font-weight:600;color:var(--color-text-hint);text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid var(--color-border-subtle)}.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:10px}.preset-btn{padding:7px 10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text-secondary);font-size:12px;cursor:pointer;font-family:var(--font-mono);font-weight:500;letter-spacing:.02em}.preset-btn:hover{border-color:var(--color-text-secondary);color:var(--color-text)}.preset-btn.active{border-color:var(--color-primary);background:var(--color-primary-dim);color:var(--color-primary)}.custom-input-row{display:flex;align-items:center;gap:6px;margin-top:6px}.custom-input-row label{font-size:12px;color:var(--color-text-hint);white-space:nowrap}.custom-input-row input{width:48px;padding:5px 6px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-size:12px;text-align:center;font-family:var(--font-mono)}.custom-input-row input:focus{outline:none;border-color:var(--color-primary)}.custom-input-row .separator{color:var(--color-text-hint);font-size:12px}.drag-mode-section{margin-top:12px;padding-top:10px;border-top:1px solid var(--color-border-subtle)}.drag-mode-section>label{display:block;font-size:11px;color:var(--color-text-hint);margin-bottom:6px;text-transform:uppercase;letter-spacing:.06em;font-weight:600}.drag-mode-row{display:grid;grid-template-columns:1fr 1fr;gap:6px}.toolbar-row{display:flex;gap:6px;margin-bottom:8px;align-items:center}.toolbar-row label{font-size:12px;color:var(--color-text-secondary);white-space:nowrap}.toolbar-select{flex:1;padding:5px 8px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text);font-size:12px}.toolbar-select:focus{outline:none;border-color:var(--color-primary)}.btn{padding:7px 14px;border:none;border-radius:var(--radius-sm);font-size:12px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:5px;line-height:1.4}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:active{background:#0178c8}.btn-primary:disabled{opacity:.3;cursor:not-allowed}.btn-secondary{background:var(--color-surface-alt);color:var(--color-text-secondary);border:1px solid var(--color-border)}.btn-secondary:hover{border-color:var(--color-text-secondary);color:var(--color-text)}.btn-full{width:100%}.grid-overlay-container{position:relative;background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border-subtle);overflow:hidden;min-height:300px;display:flex;align-items:center;justify-content:center}.grid-overlay-container canvas{position:absolute;top:0;left:0}.grid-canvas-image{z-index:1}.grid-canvas-overlay{z-index:2;touch-action:none}.cell-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(116px,1fr));gap:10px}.cell-card{background:var(--color-surface);border:1px solid var(--color-border-subtle);border-radius:var(--radius);overflow:hidden;cursor:pointer;position:relative}.cell-card:hover{border-color:var(--color-text-hint)}.cell-card.selected{border-color:var(--color-primary);box-shadow:0 0 0 1px var(--color-primary-glow)}.cell-card__preview{aspect-ratio:1;display:flex;align-items:center;justify-content:center;background:var(--color-bg);padding:4px}.cell-card__preview canvas,.cell-card__preview img{max-width:100%;max-height:100%;object-fit:contain}.cell-card__footer{display:flex;align-items:center;border-top:1px solid var(--color-border-subtle);min-height:28px}.cell-card__label{flex:1;padding:4px 6px;font-size:10px;color:var(--color-text-hint);text-align:center;font-family:var(--font-mono);font-weight:500}.cell-card__dl-group{display:flex;gap:2px;padding:3px 4px 3px 0}.cell-card__dl-btn{padding:2px 5px;border:1px solid var(--color-border);border-radius:4px;background:var(--color-bg);color:var(--color-text-hint);cursor:pointer;font-size:9px;font-family:var(--font-mono);font-weight:600;line-height:1.3}.cell-card__dl-btn:hover,.cell-card__dl-btn.last-used{border-color:var(--color-text-secondary);color:var(--color-text)}.cell-card__check{position:absolute;top:5px;left:5px;width:20px;height:20px;border-radius:50%;background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700;opacity:0;box-shadow:var(--shadow-sm)}.cell-card.selected .cell-card__check{opacity:1}.progress-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100}.progress-box{background:var(--color-surface);border-radius:var(--radius-lg);padding:28px 36px;text-align:center;box-shadow:var(--shadow-lg);border:1px solid var(--color-border-subtle)}.progress-spinner{width:32px;height:32px;border:2.5px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .75s linear infinite;margin:0 auto 14px}@keyframes spin{to{transform:rotate(360deg)}}#progress-text{font-size:13px;color:var(--color-text-secondary)}@media(max-width:960px){.editor-sidebar{width:188px}}@media(max-width:768px){#app{padding:12px 14px 40px}.app-header{padding:20px 0 16px}.app-header h1{font-size:20px}.app-header .subtitle{font-size:12px}.editor-layout{flex-direction:column;gap:12px}.editor-sidebar{width:100%;flex-direction:row;flex-wrap:wrap;gap:8px}.editor-sidebar .controls-panel{flex:1;min-width:160px}.grid-overlay-container{min-height:240px}.upload-zone{padding:36px 16px}.section-title{font-size:14px;margin-bottom:10px}.cell-gallery{grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:8px}.cell-card__footer{min-height:32px}.cell-card__dl-btn{padding:3px 6px;font-size:10px}.btn{padding:8px 14px;font-size:13px}.preset-btn{padding:8px 10px;font-size:13px}}@media(max-width:420px){#app{padding:8px 10px 32px}.app-header{padding:14px 0 12px}.app-header h1{font-size:18px}.editor-sidebar{flex-direction:column}.editor-sidebar .controls-panel{min-width:unset}.cell-gallery{grid-template-columns:repeat(auto-fill,minmax(84px,1fr));gap:6px}.cell-card__label{font-size:9px;padding:3px 4px}.cell-card__dl-group{padding:2px 3px 2px 0}}