.material-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:14px 0}.material-toolbar select{min-width:130px}
.material-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px}
.material-card{min-width:0;overflow:hidden;border:1px solid rgba(255,255,255,.14);border-radius:15px;background:rgba(10,12,20,.55);backdrop-filter:blur(14px);box-shadow:0 8px 24px rgba(0,0,0,.18)}
.material-preview{position:relative;width:100%;aspect-ratio:1/1;display:grid;place-items:center;background:linear-gradient(145deg,rgba(39,42,58,.92),rgba(8,10,18,.96));overflow:hidden}
.material-preview img,.material-preview video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.material-preview audio{position:absolute;z-index:2;left:7%;right:7%;top:42%;width:86%;height:38px}
.material-audio-preview{background:radial-gradient(circle at 28% 20%,rgba(117,99,255,.38),transparent 42%),linear-gradient(145deg,#1b2033,#090b13)}
.material-audio-icon{position:absolute;top:18%;font-size:54px;color:rgba(255,255,255,.8);text-shadow:0 8px 28px rgba(117,99,255,.65)}
.material-overlay{position:absolute;z-index:3;left:0;right:0;bottom:0;padding:34px 11px 10px;color:#fff;background:linear-gradient(transparent,rgba(4,6,12,.9));pointer-events:none}
.material-name{font-weight:750;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-shadow:0 1px 5px #000}.material-meta{font-size:12px;color:rgba(238,240,249,.78);margin-top:4px;text-shadow:0 1px 4px #000}
.material-body{padding:10px;background:rgba(12,14,22,.52)}.material-actions{display:flex;gap:7px;flex-wrap:wrap}.material-actions .action{flex:1 1 auto}
.material-empty{padding:40px;text-align:center;color:#9ca3b5}.material-upload-progress{margin-top:10px;color:#b8b4c8}
.library-picker{position:fixed;inset:0;z-index:2147483600;background:rgba(3,4,9,.78);backdrop-filter:blur(16px);padding:4vh 4vw;overflow:auto}.library-picker.hidden{display:none}.library-picker-panel{max-width:1200px;margin:auto;padding:20px;border:1px solid rgba(255,255,255,.18);border-radius:18px;background:rgba(14,16,25,.92)}.library-picker-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.library-pick-card{cursor:pointer;position:relative;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.library-pick-card:hover{transform:translateY(-2px)}.library-pick-card.selected{border-color:#7a68ff;box-shadow:0 0 0 2px rgba(122,104,255,.42),0 12px 30px rgba(0,0,0,.32)}.library-pick-check{position:absolute;z-index:5;right:8px;top:8px;width:26px;height:26px;border-radius:50%;background:#7563ff;color:#fff;display:grid;place-items:center;font-weight:bold;box-shadow:0 3px 12px rgba(0,0,0,.4)}
.library-selected-chip:after{content:"素材库";position:absolute;left:4px;top:4px;padding:2px 5px;border-radius:5px;background:#7563ff;color:#fff;font-size:10px}
@media(max-width:900px){.material-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.material-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}.material-toolbar>*{flex:1 1 135px}.library-picker{padding:12px}.library-picker-panel{padding:13px}.material-actions .action{padding:8px 7px;font-size:13px}.material-overlay{padding:30px 9px 8px}.material-audio-icon{font-size:42px}.material-preview audio{left:5%;right:5%;width:90%}}