:root{
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:#172033;background:#f6f8fb
}
*{box-sizing:border-box}body{margin:0}.hidden{display:none!important}
header{height:72px;background:#fff;border-bottom:1px solid #e7eaf0;display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:10}
.brand{font-weight:800;font-size:20px}.toolbar{display:flex;gap:10px;flex-wrap:wrap}
button,.button,input{font:inherit}
button,.button{border:1px solid #d9deea;background:#fff;border-radius:12px;padding:10px 14px;cursor:pointer}
.primary{background:#2463eb;color:#fff;border-color:#2463eb}
main{max-width:1280px;margin:auto;padding:24px}
.breadcrumbs{display:flex;gap:8px;align-items:center;margin-bottom:18px;flex-wrap:wrap}
.crumb{border:0;background:transparent;padding:4px;color:#536179}.crumb.current{color:#172033;font-weight:700}
.drop-zone{border:1.5px dashed #cfd6e4;background:#fff;border-radius:16px;padding:18px;text-align:center;color:#69758b;margin-bottom:18px}
.drop-zone.drag{background:#eef4ff;border-color:#2463eb}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.grid.list{display:flex;flex-direction:column}
.item{background:#fff;border:1px solid #e5e9f0;border-radius:16px;overflow:hidden;min-width:0;box-shadow:0 1px 2px rgba(20,30,50,.03)}
.item .preview{height:130px;background:#edf1f6;display:flex;align-items:center;justify-content:center;font-size:48px;overflow:hidden;cursor:pointer}
.item .preview img{width:100%;height:100%;object-fit:cover}
.item .body{padding:12px}
.item .name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.item .meta{font-size:13px;color:#738096;margin-top:6px}
.item .actions{display:flex;gap:6px;margin-top:10px}
.item .actions button{padding:6px 8px;border-radius:9px;font-size:13px}
.grid.list .item{display:grid;grid-template-columns:74px 1fr auto;align-items:center}
.grid.list .item .preview{height:64px}.grid.list .item .actions{padding-right:12px;margin:0}
.empty{text-align:center;color:#7b879b;padding:80px 20px}
.login-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.card{background:#fff;border:1px solid #e5e9f0;border-radius:20px;box-shadow:0 12px 40px rgba(26,36,61,.08)}
.login-card{width:min(420px,100%);padding:28px;display:flex;flex-direction:column;gap:14px}
.login-card h1{margin:0 0 6px}.login-card input,.dialog-form input{border:1px solid #d8deea;border-radius:12px;padding:12px}
.error{color:#b42318;min-height:20px;margin:0}
dialog{border:0;border-radius:18px;box-shadow:0 20px 70px rgba(0,0,0,.18)}
.dialog-form{min-width:320px;display:flex;flex-direction:column;gap:14px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px}
@media(max-width:720px){header{height:auto;padding:14px 16px;align-items:flex-start;gap:12px;flex-direction:column}main{padding:16px}.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.toolbar{width:100%}.toolbar>*{flex:1;text-align:center}}

.item .actions{flex-wrap:wrap;padding:0 8px 8px}
button{min-height:44px}button:disabled{opacity:.55;cursor:wait}
#uploadStatus{overflow-wrap:anywhere}.dialog-form{min-width:0;width:min(320px,75vw)}
@media(max-width:720px){.grid.list .item{grid-template-columns:60px minmax(0,1fr)}.grid.list .item .actions{grid-column:1/-1;padding:8px}.toolbar>input[hidden]{display:none}}

.lightbox{padding:0;border:0;width:100vw;height:100vh;max-width:100vw;max-height:100vh;margin:0;background:rgba(10,14,22,.95)}
.lightbox::backdrop{background:rgba(10,14,22,.95)}
.lightbox[open]{display:flex;align-items:center;justify-content:center}
.lightbox img{max-width:92vw;max-height:78vh;object-fit:contain;user-select:none;touch-action:pan-y}
.lightbox-close,.lightbox-nav{position:fixed;border:0;background:rgba(255,255,255,.14);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;min-height:0}
.lightbox-close{top:16px;right:16px;width:44px;height:44px;border-radius:50%;font-size:18px}
.lightbox-nav{top:50%;transform:translateY(-50%);width:52px;height:52px;border-radius:50%;font-size:28px}
.lightbox-prev{left:16px}.lightbox-next{right:16px}
.lightbox-close:hover,.lightbox-nav:hover{background:rgba(255,255,255,.26)}
.lightbox-bar{position:fixed;bottom:0;left:0;right:0;display:flex;align-items:center;gap:16px;justify-content:center;padding:14px 16px;background:linear-gradient(transparent,rgba(0,0,0,.65));color:#fff;flex-wrap:wrap;text-align:center}
.lightbox-bar #lightboxName{font-weight:700;overflow-wrap:anywhere}
.lightbox-bar #lightboxCount{color:#c7cedb}
.lightbox-download{color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:10px;padding:8px 12px;text-decoration:none}
@media(max-width:720px){.lightbox-nav{width:44px;height:44px;font-size:22px}.lightbox-close{width:40px;height:40px}.lightbox img{max-height:70vh}}