/* 素材库：右边缘的收起式侧栏 */
#app.bare .lib-dock { display: none; }
.lib-dock { position: fixed; top: 0; right: 0; bottom: 0; z-index: 95; display: flex; align-items: flex-start; pointer-events: none; }
.lib-tab { pointer-events: auto; margin-top: 30vh; display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 12px 8px; border: 1px solid var(--border-strong); border-right: 0; border-radius: 12px 0 0 12px; background: var(--surface); color: var(--brand); box-shadow: var(--shadow-lg); cursor: pointer; font: inherit; font-size: 14px; font-weight: 600; writing-mode: vertical-rl; letter-spacing: 2px; }
.lib-tab .i { width: 16px; height: 16px; }
.lib-tab:hover { background: var(--brand-soft); }
.lib-panel { pointer-events: auto; width: 0; height: 100%; overflow: hidden; display: flex; flex-direction: column; background: var(--surface); border-left: 1px solid var(--border-strong); box-shadow: var(--shadow-lg); transition: width .18s ease; }
.lib-dock.open .lib-panel { width: min(340px, 92vw); }
.lib-dock.open .lib-tab { display: none; }
.lib-panel > * { min-width: min(340px, 92vw); }
.lib-head { display: flex; align-items: center; gap: 10px; padding: 16px 16px 10px; }
.lib-head b { font-size: 17px; }
.lib-count { color: var(--text-3); font-size: 13px; }
.lib-close { margin-left: auto; width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-2); cursor: pointer; }
.lib-close .i { width: 16px; height: 16px; }
.lib-tabs { display: flex; gap: 4px; padding: 0 12px 10px; flex-wrap: wrap; }
.lib-tabs button { padding: 5px 11px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--text-2); font: inherit; font-size: 13px; cursor: pointer; }
.lib-tabs button[aria-selected="true"] { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
.lib-tools { display: flex; gap: 8px; padding: 0 12px 10px; }
.lib-search { flex: 1; min-width: 0; display: flex; align-items: center; gap: 6px; padding: 0 10px; border: 1px solid var(--border); border-radius: 8px; color: var(--text-3); }
.lib-search .i { width: 14px; height: 14px; flex: none; }
.lib-search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; padding: 7px 0; font: inherit; font-size: 13px; color: var(--text); }
.lib-up { display: flex; align-items: center; gap: 5px; padding: 0 10px; border: 1px dashed var(--brand); border-radius: 8px; color: var(--brand); font-size: 13px; cursor: pointer; white-space: nowrap; }
.lib-up .i { width: 14px; height: 14px; }
.lib-up em { font-style: normal; font-weight: 600; margin-left: 2px; }
.lib-grid { flex: 1; overflow-y: auto; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: start; gap: 10px; padding: 4px 12px 12px; }
.lib-panel.over .lib-grid { outline: 2px dashed var(--brand); outline-offset: -6px; background: var(--brand-soft); }
.lib-item { position: relative; margin: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--surface-2); }
.lib-item img { display: block; width: 100%; aspect-ratio: 1; object-fit: contain; background: #fff; cursor: grab; }
.lib-item figcaption { display: grid; gap: 4px; padding: 6px 8px 8px; }
.lib-item figcaption b { font-size: 12px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lib-item select { font: inherit; font-size: 12px; padding: 2px 4px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text-2); }
.lib-acts { position: absolute; top: 6px; right: 6px; display: flex; gap: 4px; opacity: 0; transition: opacity .12s; }
.lib-item:hover .lib-acts, .lib-acts:focus-within { opacity: 1; }
.lib-acts button { width: 28px; height: 28px; display: grid; place-items: center; border: 0; border-radius: 7px; background: rgba(255, 255, 255, .94); color: var(--text-2); cursor: pointer; box-shadow: 0 1px 3px rgba(0, 0, 0, .15); }
.lib-acts button:hover { color: var(--brand); }
.lib-acts button[data-lib-del]:hover { color: var(--red); }
.lib-acts .i { width: 14px; height: 14px; }
.lib-empty { grid-column: 1 / -1; text-align: center; color: var(--text-3); font-size: 13px; line-height: 1.8; padding: 40px 8px; }
.lib-hint { margin: 0; padding: 10px 14px 14px; border-top: 1px solid var(--border); color: var(--text-3); font-size: 12px; display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.lib-hint .i { width: 12px; height: 12px; }
@media (hover: none) { .lib-acts { opacity: 1; } }

/* 各处图片上的“☆ 存入素材库” */
.lib-save { display: inline-flex; align-items: center; gap: 4px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-2); font: inherit; font-size: 13px; cursor: pointer; }
.lib-save:hover { color: var(--brand); border-color: var(--brand); }
.lib-save .i { width: 14px; height: 14px; }
.tile-lib { position: absolute; right: 40px; bottom: 6px; width: 28px; height: 28px; border-radius: 8px; border: 0; background: rgba(255, 255, 255, .92); color: var(--brand); display: grid; place-items: center; cursor: pointer; opacity: 0; transition: opacity .12s; }
.tile:hover .tile-lib, .tile-lib:focus-visible { opacity: 1; }
.tile-lib .i { width: 15px; height: 15px; }
@media (hover: none) { .tile-lib { opacity: 1; } }