:root{--red:#E53E3E;--bg:#f8f9fa;--card:#fff;--text:#0f0f0f}
*{margin:0;padding:0;box-sizing:border-box;font-family:Roboto,Arial,sans-serif}
body{background:var(--bg);color:var(--text)}
header{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;background:#fff;position:sticky;top:0;z-index:10;box-shadow:0 1px 3px rgba(0,0,0,.1)}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:22px}
.logo span{color:var(--red)}
.search{display:flex;flex:1;max-width:600px;margin:0 20px}
.search input{flex:1;padding:10px 15px;border:1px solid #ccc;border-radius:20px 0 0 20px;outline:none}
.search button{padding:10px 20px;border:1px solid #ccc;border-left:0;border-radius:0 20px 20px 0;background:#f2f2f2;cursor:pointer}
.btn-upload{background:var(--red);color:#fff;border:none;padding:10px 18px;border-radius:20px;cursor:pointer;font-weight:600}
.container{display:flex}
.sidebar{width:240px;background:#fff;min-height:100vh;padding:15px;position:sticky;top:60px}
.sidebar a{display:flex;align-items:center;gap:12px;padding:10px;border-radius:10px;text-decoration:none;color:#000;margin-bottom:4px}
.sidebar a.active,.sidebar a:hover{background:#f2f2f2}
.main{flex:1;padding:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.card{background:var(--card);border-radius:12px;overflow:hidden;cursor:pointer;transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.thumb{aspect-ratio:16/9;background:#000;position:relative;display:flex;align-items:center;justify-content:center;color:#fff;font-size:40px}
.thumb img,.thumb video{width:100%;height:100%;object-fit:cover}
.badge{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.8);color:#fff;padding:2px 6px;border-radius:4px;font-size:12px}
.card-body{padding:12px}
.card-body h3{font-size:16px;margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta{font-size:13px;color:#606060}
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:100;align-items:center;justify-content:center;padding:20px}
.modal.active{display:flex}
.modal-content{background:#fff;border-radius:12px;width:100%;max-width:900px;max-height:90vh;overflow:auto}
.modal-content.upload{max-width:500px;padding:25px}
.drop{border:2px dashed #ccc;border-radius:12px;padding:30px;text-align:center;cursor:pointer;margin:15px 0}
.drop.dragover{border-color:var(--red);background:#fff5f5}
input[type=text],textarea,select{width:100%;padding:10px;border:1px solid #ccc;border-radius:8px;margin:8px 0}
.player-wrap{aspect-ratio:16/9;background:#000}
.player-wrap video{width:100%;height:100%}