:root{--color-bg: #0f1115;--color-surface: #181c24;--color-surface-2: #21262f;--color-text: #e6e8ec;--color-text-muted: #9aa3b2;--color-accent: #4f8cff;--color-accent-strong: #2f6df0;--color-danger: #f04f4f;--color-success: #3ec27a;--color-warning: #f0b400;--color-border: #2a313c;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,sans-serif;color-scheme:dark}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--color-bg);color:var(--color-text)}a{color:var(--color-accent)}button{font:inherit;cursor:pointer;background:var(--color-accent);color:#fff;border:0;padding:var(--space-2) var(--space-4);border-radius:var(--radius-sm)}button:hover:not(:disabled){background:var(--color-accent-strong)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--color-surface-2);color:var(--color-text)}input,textarea{font:inherit;background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:var(--space-2) var(--space-3)}.app-shell{max-width:1100px;margin:0 auto;padding:var(--space-5)}.app-header{display:flex;align-items:center;justify-content:space-between;padding-bottom:var(--space-4);border-bottom:1px solid var(--color-border);margin-bottom:var(--space-5)}.app-header nav{display:flex;gap:var(--space-4)}.app-header nav a{color:var(--color-text-muted);text-decoration:none}.app-header nav a.active{color:var(--color-text)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-4)}.status-badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600}.status-uploading{background:#4f8cff26;color:var(--color-accent)}.status-submitted,.status-processing{background:#f0b40026;color:var(--color-warning)}.status-ready{background:#3ec27a26;color:var(--color-success)}.status-failed{background:#f04f4f26;color:var(--color-danger)}.list-row{display:flex;align-items:center;gap:var(--space-3)}.thumbnail{width:96px;height:54px;object-fit:cover;border-radius:var(--radius-sm);background:var(--color-surface-2);flex-shrink:0}.thumbnail-placeholder{border:1px solid var(--color-border)}.thumbnail-lg{width:100%;height:140px}.item-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--space-4)}.item-card-grid{position:relative;display:flex;flex-direction:column;gap:var(--space-2)}.item-card-thumb-wrap{position:relative}.item-card-title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.item-card-meta{font-size:.8rem}.item-card-actions{display:flex;gap:var(--space-1);opacity:0;transition:opacity .1s ease}.item-card-grid:hover .item-card-actions,.item-card-list:hover .item-card-actions,.item-card-grid:focus-within .item-card-actions,.item-card-list:focus-within .item-card-actions{opacity:1}.item-card-grid .item-card-actions{position:absolute;top:var(--space-2);right:var(--space-2);background:#0f1115bf;border-radius:var(--radius-sm);padding:2px}.add-new-tile{display:flex;align-items:center;gap:var(--space-2);width:100%;background:transparent;border:1px dashed var(--color-border);color:var(--color-text-muted);text-decoration:none;cursor:pointer;font:inherit;transition:border-color .15s ease,color .15s ease}.add-new-tile:hover{border-color:var(--color-accent);color:var(--color-text);background:transparent}.add-new-icon{font-size:1.25rem;line-height:1}.add-new-tile-grid{flex-direction:column;justify-content:center;min-height:140px;text-align:center}.icon-button{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:transparent;color:var(--color-text);border:0;padding:0;border-radius:var(--radius-sm);font-size:1rem;line-height:1;flex-shrink:0}.icon-button:hover:not(:disabled){background:var(--color-surface-2)}.muted{color:var(--color-text-muted)}.error{color:var(--color-danger)}