:root{
  --bg:#0a0a0b; --bg2:#121214; --card:#151517; --card-hi:#1c1c1f;
  --line:#2a2a2e; --line-hi:#4a4a50; --text:#f2f2f3; --muted:#9a9aa0;
  --ok:#4ade80; --bad:#f87171;
}
@property --angle{syntax:'<angle>';initial-value:0deg;inherits:false}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);
  background:radial-gradient(1200px 600px at 80% -10%,rgba(255,255,255,.06),transparent 60%),var(--bg);
}
button{font:inherit;color:inherit}
[hidden]{display:none!important}
.watermark{position:fixed;right:-120px;bottom:-140px;width:600px;opacity:.03;filter:invert(1);pointer-events:none;z-index:-1}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:8px 14px;font-size:14px;cursor:pointer;transition:background .2s,border-color .2s,color .2s;white-space:nowrap;text-decoration:none;color:var(--text)}
.btn:hover{border-color:var(--line-hi);background:var(--card-hi)}
.btn.primary{background:#f2f2f3;color:#111;border-color:#f2f2f3;font-weight:600}
.btn.primary:hover{background:#fff}
.btn.danger{color:var(--bad)}
.btn.danger:hover{border-color:var(--bad)}
.btn.on{border-color:#fff}
.btn svg{width:16px;height:16px;flex:none}
.btn.icon{width:36px;height:36px;padding:0;justify-content:center}

/* ---------- logo ---------- */
.logo{width:42px;height:42px;border-radius:50%;padding:5px;flex:none;
  background:radial-gradient(circle at 35% 30%,#fff,#d4d4d8 70%,#9a9aa0);
  box-shadow:0 0 0 2px var(--line),0 0 18px rgba(255,255,255,.15)}
.logo img{width:100%;height:100%;object-fit:contain;display:block}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:260px 1fr;grid-template-rows:auto 1fr;height:100vh;height:100dvh}
header.top{grid-column:1/-1;display:flex;align-items:center;gap:10px;padding:12px 20px;border-bottom:1px solid var(--line);
  background:rgba(10,10,11,.85);backdrop-filter:blur(8px);z-index:20}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto;text-decoration:none;color:inherit;min-width:0}
.brand h1{font-size:19px;white-space:nowrap}
.brand h1 span{color:var(--muted);font-weight:500}
.menu-toggle{display:none}

aside.side{border-right:1px solid var(--line);overflow:auto;padding:14px 10px 30px;background:rgba(18,18,20,.5)}
.side h3{font-size:11px;letter-spacing:1.2px;color:var(--muted);padding:12px 10px 6px;text-transform:uppercase;font-weight:600}
.tree ul{list-style:none}
.tree ul ul{padding-left:14px}
.node{display:flex;align-items:center;gap:6px;padding:7px 8px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--muted);
  transition:background .15s,color .15s;user-select:none}
.node:hover{background:var(--card);color:var(--text)}
.node.current{background:var(--card-hi);color:var(--text);box-shadow:inset 2px 0 0 #fff}
.node.drop{background:#fff!important;color:#111!important}
.node .n{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tw{width:16px;height:16px;display:grid;place-items:center;flex:none;border-radius:4px;transition:transform .2s}
.tw.open{transform:rotate(90deg)}
.tw:hover{background:var(--line)}
.node svg{width:16px;height:16px;flex:none}
.share-list .node .n{font-size:13px}

main.main{overflow:auto;padding:18px 24px 90px;position:relative}
.crumbs{display:flex;align-items:center;gap:2px;flex-wrap:wrap;font-size:15px;margin-bottom:14px}
.crumbs a{color:var(--muted);text-decoration:none;padding:4px 8px;border-radius:8px;cursor:pointer;transition:background .15s}
.crumbs a:hover{color:var(--text);background:var(--card)}
.crumbs a.drop{background:#fff;color:#111}
.crumbs a:last-of-type{color:var(--text);font-weight:600}
.crumbs .sep{color:var(--line-hi)}
.bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:20px;min-height:38px}
.bar .grow{flex:1}
.selinfo{font-size:14px;font-weight:600;padding-right:6px}
.section-title{font-size:11px;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);margin:4px 0 10px;font-weight:600}

/* ---------- grid ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px;margin-bottom:28px}
.item{position:relative;border-radius:14px;background:var(--card);border:1px solid var(--line);overflow:hidden;cursor:pointer;
  transition:transform .3s cubic-bezier(.2,.8,.2,1),border-color .2s,box-shadow .3s,opacity .2s;
  animation:rise .45s cubic-bezier(.2,.8,.2,1) both;user-select:none;-webkit-user-select:none}
@keyframes rise{from{opacity:0;transform:translateY(12px) scale(.97)}}
.item:hover{transform:translateY(-3px);border-color:var(--line-hi);box-shadow:0 14px 30px -14px rgba(255,255,255,.18)}
.item.sel{border-color:#fff;box-shadow:0 0 0 2px #fff}
.item.dragging{opacity:.35}
.item::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:2px;z-index:3;pointer-events:none;
  background:conic-gradient(from var(--angle),#fff,#8d8d93,transparent 40%,transparent 60%,#8d8d93,#fff);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;
  opacity:0;transition:opacity .2s}
.item.drop::before{opacity:1;animation:spin 1.6s linear infinite}
.item.drop{transform:scale(1.04)}
@keyframes spin{to{--angle:360deg}}
.thumb{aspect-ratio:1;background:#0e0e10;display:grid;place-items:center;overflow:hidden;position:relative}
.thumb img{width:100%;height:100%;object-fit:cover;display:block;opacity:0;transition:opacity .4s,transform .5s}
.thumb img.loaded{opacity:1}
.item:hover .thumb img{transform:scale(1.04)}
.cap{padding:9px 11px;font-size:13px;display:flex;justify-content:space-between;align-items:center;gap:6px}
.cap .n{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cap .c{color:var(--muted);font-size:12px;white-space:nowrap}
.photo .cap{position:absolute;inset:auto 0 0 0;background:linear-gradient(transparent,rgba(0,0,0,.8));opacity:0;transition:opacity .2s;padding-top:24px}
.photo:hover .cap{opacity:1}
.folder .thumb{background:linear-gradient(135deg,#1d1d20,#111113)}
.folder .thumb>svg{width:54px;height:54px;color:#55555c}
.folder .thumb img{filter:brightness(.7)}
.folder .fbadge{position:absolute;left:10px;bottom:10px;width:30px;height:30px;border-radius:8px;background:rgba(0,0,0,.6);display:grid;place-items:center;backdrop-filter:blur(4px)}
.folder .fbadge svg{width:16px;height:16px}
.shared-tag{position:absolute;right:10px;bottom:10px;font-size:10px;font-weight:700;letter-spacing:.8px;background:#fff;color:#111;padding:3px 7px;border-radius:999px}

.check{position:absolute;top:8px;left:8px;width:24px;height:24px;border-radius:50%;border:2px solid rgba(255,255,255,.85);
  background:rgba(0,0,0,.4);display:grid;place-items:center;opacity:0;transition:opacity .15s,background .15s;z-index:4;cursor:pointer}
.item:hover .check,.selecting .check,.item.sel .check{opacity:1}
.item.sel .check{background:#fff;border-color:#fff}
.item.sel .check::after{content:"";width:10px;height:5px;border:2px solid #111;border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px)}
.more{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:8px;border:0;background:rgba(0,0,0,.55);
  cursor:pointer;opacity:0;z-index:4;display:grid;place-items:center;transition:opacity .15s}
.more svg{width:16px;height:16px}
.item:hover .more{opacity:1}
@media (hover:none){.more{opacity:1}.check{opacity:.7}}

.empty{text-align:center;color:var(--muted);padding:70px 20px;border:2px dashed var(--line);border-radius:18px}
.empty svg{width:56px;height:56px;margin-bottom:12px;opacity:.6}
.empty b{display:block;color:var(--text);font-size:17px;margin-bottom:6px}
.loading{display:grid;place-items:center;padding:60px;color:var(--muted)}

/* ---------- drop overlay / uploads ---------- */
.dropzone{position:fixed;inset:12px;border:3px dashed rgba(255,255,255,.8);border-radius:22px;background:rgba(10,10,11,.88);
  display:none;place-items:center;z-index:50;text-align:center;font-size:20px;font-weight:600}
.dropzone.show{display:grid;animation:fade .15s}
.dropzone svg{width:64px;height:64px;margin-bottom:10px;animation:bob 1.2s ease-in-out infinite}
.dropzone small{display:block;color:var(--muted);font-size:14px;font-weight:400;margin-top:6px}
@keyframes bob{50%{transform:translateY(-6px)}}
.uploads{position:fixed;right:16px;bottom:16px;width:min(340px,calc(100vw - 32px));background:var(--bg2);border:1px solid var(--line);
  border-radius:14px;box-shadow:0 20px 50px -10px rgba(0,0,0,.7);z-index:40;max-height:50vh;display:flex;flex-direction:column;animation:fade .2s}
.uploads .head{display:flex;align-items:center;justify-content:space-between;padding:10px 12px 10px 14px;border-bottom:1px solid var(--line);font-size:14px;font-weight:600}
.uploads .list{overflow:auto;padding:6px 0}
.up-row{padding:7px 14px;font-size:12.5px}
.up-row .r{display:flex;justify-content:space-between;gap:8px;margin-bottom:5px}
.up-row .r span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.up-row .st{color:var(--muted);white-space:nowrap}
.up-row.err .st{color:var(--bad)}
.up-row.done .st{color:var(--ok)}
.prog{height:4px;border-radius:4px;background:var(--line);overflow:hidden}
.prog i{display:block;height:100%;width:0;background:#fff;transition:width .2s}
.up-row.err .prog i{background:var(--bad)}

/* ---------- modal / menu / toast ---------- */
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(8px) scale(.97)}}
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.6);display:grid;place-items:center;z-index:85;animation:fade .15s;padding:16px}
.modal{background:var(--bg2);border:1px solid var(--line);border-radius:16px;width:min(440px,100%);padding:20px;animation:pop .2s;box-shadow:0 30px 60px -20px #000}
.modal h2{font-size:17px;margin-bottom:10px}
.modal p{color:var(--muted);font-size:14px;margin-bottom:14px;line-height:1.45}
.field{width:100%;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:10px 12px;font-size:15px;outline:none;transition:border-color .2s}
.field:focus{border-color:#fff}
.modal .actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px;flex-wrap:wrap}
.modal .actions .left{margin-right:auto}
.picker{max-height:320px;overflow:auto;border:1px solid var(--line);border-radius:10px;padding:6px;background:var(--bg)}
.picker .node.picked{background:#fff;color:#111}
.picker .node.disabled{opacity:.35;pointer-events:none}
.copyrow{display:flex;gap:8px}
.menu{position:fixed;background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:6px;z-index:70;min-width:180px;
  box-shadow:0 20px 40px -10px rgba(0,0,0,.8);animation:pop .12s}
.menu button{display:flex;width:100%;gap:10px;align-items:center;background:none;border:0;padding:8px 10px;border-radius:8px;font-size:14px;cursor:pointer;text-align:left}
.menu button:hover{background:var(--card-hi)}
.menu button.danger{color:var(--bad)}
.menu svg{width:16px;height:16px;opacity:.8}
.menu hr{border:0;border-top:1px solid var(--line);margin:5px 4px}
.toasts{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);z-index:95;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.toast{background:#f2f2f3;color:#111;padding:10px 16px;border-radius:10px;font-size:14px;font-weight:500;animation:pop .2s;box-shadow:0 10px 30px rgba(0,0,0,.5);max-width:90vw;white-space:pre-line}
.toast.err{background:var(--bad)}

/* ---------- lightbox ---------- */
.lb{position:fixed;inset:0;background:rgba(5,5,6,.97);z-index:80;display:grid;grid-template-rows:auto minmax(0,1fr) auto;animation:fade .2s}
.lb-top{display:flex;align-items:center;gap:8px;padding:12px 16px}
.lb-top .t{margin-right:auto;font-size:14px;min-width:0}
.lb-top .t b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.lb-top .t span{color:var(--muted);font-size:12px}
.lb-stage{position:relative;display:grid;place-items:center;overflow:hidden;padding:0 64px 12px;touch-action:pan-y;min-height:0}
.lb-stage img{position:absolute;inset:0 64px 12px;width:calc(100% - 128px);height:calc(100% - 12px);object-fit:contain;animation:zoomin .3s cubic-bezier(.2,.8,.2,1)}
@keyframes zoomin{from{opacity:0;transform:scale(.96)}}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:rgba(21,21,23,.8);cursor:pointer;display:grid;place-items:center;transition:background .2s}
.lb-nav:hover{background:var(--card-hi)}
.lb-nav svg{width:20px;height:20px}
.lb-nav.prev{left:10px}.lb-nav.next{right:10px}
.lb-strip{display:flex;gap:6px;overflow-x:auto;padding:8px 16px 14px;scrollbar-width:none;justify-content:safe center}
.lb-strip img{width:54px;height:54px;object-fit:cover;border-radius:8px;opacity:.4;cursor:pointer;transition:opacity .2s,outline-color .2s;outline:2px solid transparent;flex:none}
.lb-strip img.cur{opacity:1;outline-color:#fff}

/* ---------- login ---------- */
.auth{min-height:100vh;min-height:100dvh;display:grid;place-items:center;padding:16px}
.auth-card{width:min(380px,100%);background:var(--bg2);border:1px solid var(--line);border-radius:20px;padding:32px 28px;text-align:center;animation:pop .35s}
.auth-card .logo{width:88px;height:88px;padding:9px;margin:0 auto 18px;animation:float 4s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-4px) rotate(-3deg)}}
.auth-card h1{font-size:22px;margin-bottom:6px}
.auth-card p{color:var(--muted);font-size:14px;margin-bottom:20px}
.auth-card form{display:flex;flex-direction:column;gap:10px}
.auth-card .btn{justify-content:center;padding:11px}
.auth-card .msg{color:var(--bad);font-size:13px;min-height:18px}

/* ---------- mobile ---------- */
@media (max-width:800px){
  .app{grid-template-columns:1fr}
  .menu-toggle{display:inline-flex}
  aside.side{position:fixed;top:0;left:0;bottom:0;width:280px;transform:translateX(-100%);transition:transform .3s;z-index:30;background:var(--bg2);padding-top:76px}
  .app.side-open aside.side{transform:none;box-shadow:20px 0 60px rgba(0,0,0,.6)}
  .grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px}
  main.main{padding:14px 16px 90px}
  .btn .lbl{display:none}
  .btn:has(.lbl){padding:8px 10px}
  .brand h1{font-size:17px}
  .lb-stage{padding:0 0 12px}
  .lb-stage img{inset:0 0 12px;width:100%}
  .lb-nav{display:none}
}
@media (prefers-reduced-motion:reduce){*,*::before{animation:none!important;transition:none!important}}
.shared-tag{transition:opacity .2s}
.photo:hover .shared-tag{opacity:0}