*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#4f46e5;--primary-hover:#4338ca;--danger:#ef4444;--bg:#f5f5f7;--card-bg:#ffffff;--text:#1f2937;--text-muted:#6b7280;--border:#e5e7eb;--shadow:0 2px 8px rgba(0,0,0,.08);--radius:12px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;padding-bottom:100px}
.topbar{position:sticky;top:0;z-index:100;background:var(--card-bg);padding:12px 16px 10px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
.topbar h1{font-size:20px;font-weight:700;margin-bottom:8px}
.search-box input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;-webkit-appearance:none;background:var(--bg)}
.search-box input:focus{border-color:var(--primary);background:#fff}
.video-list{padding:12px 16px;display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:600px){.video-list{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.video-list{grid-template-columns:repeat(4,1fr)}}
.empty-state{grid-column:1/-1;text-align:center;padding:60px 20px;color:var(--text-muted)}
.empty-icon{font-size:48px;margin-bottom:12px}
.empty-state p{font-size:16px}
.empty-state .sub{font-size:13px;margin-top:4px;color:#9ca3af}
.video-card{background:var(--card-bg);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);cursor:pointer;transition:transform .15s}
.video-card:active{transform:scale(.97)}
.video-card .thumb-wrap{position:relative;width:100%;aspect-ratio:9/16;background:#1f2937;display:flex;align-items:center;justify-content:center}
.video-card video{width:100%;height:100%;object-fit:cover}
.video-card .duration-badge{position:absolute;bottom:6px;right:6px;background:rgba(0,0,0,.7);color:#fff;font-size:11px;padding:2px 6px;border-radius:4px}
.video-card .card-body{padding:8px 10px 10px}
.video-card .card-body .uploader{font-weight:600;font-size:14px;margin-bottom:2px}
.video-card .card-body .meta{font-size:12px;color:var(--text-muted);display:flex;justify-content:space-between}
.bottombar{position:fixed;bottom:0;left:0;right:0;height:80px;display:flex;align-items:center;justify-content:center;background:linear-gradient(transparent,var(--bg) 40%);padding-bottom:env(safe-area-inset-bottom,0px);pointer-events:none}
.btn-record{pointer-events:auto;width:64px;height:64px;border-radius:50%;border:3px solid var(--border);background:var(--primary);display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 16px rgba(79,70,229,.35);transition:transform .15s,box-shadow .15s}
.btn-record:active{transform:scale(.92);box-shadow:0 2px 8px rgba(79,70,229,.25)}
.record-icon{color:#fff;font-size:28px;line-height:1}
.modal-overlay{position:fixed;inset:0;z-index:300;background:rgba(0,0,0,.5);display:flex;align-items:flex-end;justify-content:center}
.modal{background:var(--card-bg);border-radius:16px 16px 0 0;width:100%;max-width:500px;max-height:85vh;overflow-y:auto;padding:20px 16px 24px;animation:slideUp .25s ease-out}
.modal-wide{max-width:700px}
@keyframes slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}
.modal h2{font-size:18px;margin-bottom:14px}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.modal-header h2{margin-bottom:0}
.btn-close{width:32px;height:32px;border-radius:50%;border:none;background:var(--bg);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}
.modal-body{margin-bottom:16px}
.modal-body video{width:100%;border-radius:8px;background:#000;margin-bottom:12px;max-height:280px}
.modal-body label{display:block;font-size:13px;font-weight:600;color:var(--text-muted);margin-bottom:4px;margin-top:10px}
.modal-body input{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:8px;font-size:15px;outline:none;-webkit-appearance:none}
.modal-body input:focus{border-color:var(--primary)}
.modal-actions{display:flex;gap:10px}
.btn-primary,.btn-secondary{flex:1;padding:12px;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:active{background:var(--primary-hover)}
.btn-primary:disabled{opacity:.5}
.btn-secondary{background:var(--bg);color:var(--text)}
.btn-secondary:active{background:var(--border)}
.video-meta{margin-top:12px;font-size:13px;color:var(--text-muted);display:flex;flex-wrap:wrap;gap:8px 20px}
.video-meta span{white-space:nowrap}
.video-meta .label{font-weight:600;color:var(--text)}
.toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);z-index:999;background:#1f2937;color:#fff;padding:10px 20px;border-radius:8px;font-size:14px;animation:fadeIn .2s ease-out;pointer-events:none}
@keyframes fadeIn{from{opacity:0;transform:translateX(-50%) translateY(-10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}