:root{
  --fog:#EDF1F2; --panel:#FAFBFB; --line:#D9E1E4; --ink:#16232C; --muted:#5E7080;
  --accent:#2E7D86; --accent-d:#236169; --danger:#B4432F; --side:#15222B; --side-ink:#C4D2D9;
  --r:10px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--fog);color:var(--ink);font:15px/1.5 "Avenir Next","Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1{font-size:28px;line-height:1.2;margin:0;letter-spacing:-.01em}
h2{font-size:17px;margin:0 0 6px}
code,pre{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-size:12.5px}
small{font-size:12.5px}

/* shell */
.app{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
.side{background:var(--side);color:var(--side-ink);padding:22px 14px;display:flex;flex-direction:column;gap:24px;position:sticky;top:0;height:100vh}
.brand{display:flex;align-items:center;gap:10px;padding:0 8px;color:#fff;font-weight:650;font-size:16px}
.brand small{display:block;font-weight:400;color:#8EA3AE;line-height:1.1}
.brand.dark{color:var(--ink);padding:0}
.brand.dark small{color:var(--muted)}
.mark{width:30px;height:30px;border-radius:50%;flex:none;background:radial-gradient(circle at 28% 28%,#D4ECEE,transparent 58%),radial-gradient(circle at 72% 72%,#2E7D86,transparent 64%),#1E3944;box-shadow:inset 0 0 0 1px rgba(255,255,255,.18)}
.nav{display:flex;flex-direction:column;gap:2px}
.nav a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:var(--side-ink)}
.nav a:hover{background:rgba(255,255,255,.06);text-decoration:none}
.nav a.on{background:rgba(255,255,255,.11);color:#fff}
.ico{width:18px;height:18px;flex:none}
.me{margin-top:auto;padding:12px 10px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px;display:grid;gap:2px}
.me b{color:#fff;font-weight:600}
.link-btn{background:none;border:0;padding:0;margin-top:6px;color:#8EC3C9;font:inherit;cursor:pointer;text-align:left}
.link-btn:hover{text-decoration:underline}
.main{padding:34px clamp(18px,4vw,48px) 72px;max-width:1120px;width:100%}
.page-head{margin-bottom:22px}
.sub{margin:6px 0 0;color:var(--muted)}

/* notices */
.notice{padding:11px 14px;border-radius:var(--r);margin-bottom:18px;border:1px solid}
.notice.ok{background:#E7F3EE;border-color:#B7DACB;color:#1B5B43}
.notice.err{background:#FBEDE9;border-color:#EBC3B8;color:#8A2F1E}

/* stats */
.stats{display:flex;flex-wrap:wrap;gap:12px 36px;margin-bottom:22px}
.stats>div{display:flex;flex-direction:column}
.stats strong{font-size:22px;font-weight:650;letter-spacing:-.01em}
.stats strong small{font-weight:400;color:var(--muted);font-size:13px}
.stats span{color:var(--muted);font-size:13px}
.bar{height:6px;border-radius:99px;background:var(--line);width:180px;margin:6px 0 3px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--accent);border-radius:99px}

/* dropzone: the one place with atmosphere */
.drop{position:relative;overflow:hidden;isolation:isolate;border:1.5px dashed #9DB2BB;border-radius:16px;background:#F5F8F8;padding:42px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;margin-bottom:26px}
.drop::before,.drop::after{content:"";position:absolute;z-index:-1;width:440px;height:440px;border-radius:50%;filter:blur(64px);opacity:.55;animation:drift 20s ease-in-out infinite alternate}
.drop::before{background:#BCDFE2;left:-140px;top:-220px}
.drop::after{background:#C8D2F0;right:-160px;bottom:-260px;animation-delay:-10s}
@keyframes drift{to{transform:translate(140px,70px) scale(1.15)}}
.drop.over{border-color:var(--accent);background:#EBF6F6}
.drop-text{display:grid;gap:2px}
.drop-text strong{font-size:18px}
.drop-text span{color:var(--muted)}
.progress{height:6px;max-width:320px;margin:16px auto 0;background:rgba(22,35,44,.12);border-radius:99px;overflow:hidden}
.progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .15s}
.drop-errors{list-style:none;margin:14px 0 0;padding:0;color:#8A2F1E;font-size:13.5px}
@media (prefers-reduced-motion:reduce){.drop::before,.drop::after{animation:none}}

/* controls */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:#fff;color:var(--ink);font:inherit;cursor:pointer;line-height:1.2;transition:background .15s,border-color .15s}
.btn:hover{background:#F1F5F6;text-decoration:none}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-d)}
.btn-quiet{border-color:transparent;background:transparent;padding:6px 10px}
.btn-quiet:hover{background:rgba(22,35,44,.06)}
.danger,.btn-danger{color:var(--danger)}
.btn-danger{border-color:#EBC3B8}
.wide{width:100%}
input,select{font:inherit;color:inherit;padding:9px 11px;border-radius:8px;border:1px solid #C5D0D5;background:#fff;min-width:0}
input:focus,select:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}
label{display:grid;gap:5px;font-weight:550;font-size:14px}
label small{font-weight:400;color:var(--muted)}
.search{display:flex;gap:8px;margin-bottom:14px}
.search input{flex:1;max-width:360px}

/* table */
.table-wrap{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{text-align:left;font-weight:550;font-size:13px;color:var(--muted);padding:11px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
td{padding:12px 16px;border-bottom:1px solid #E6ECEE;vertical-align:middle}
tr:last-child td{border-bottom:0}
tr.off td{opacity:.6}
.file{display:flex;align-items:center;gap:12px;min-width:240px}
.file a{font-weight:550;word-break:break-all}
.thumb{width:40px;height:40px;border-radius:8px;object-fit:cover;background:#DCE5E8;flex:none}
.thumb.ext{display:grid;place-items:center;font-size:11px;font-weight:600;color:#44606B;font-family:ui-monospace,Menlo,monospace}
.url{display:block;color:var(--muted);max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.by{display:block;color:var(--muted)}
.actions{white-space:nowrap;text-align:right}
.actions form{display:inline}
.badge{display:inline-block;padding:1px 8px;border-radius:99px;font-size:12px;background:#E3EAED;color:#44606B;margin-left:6px}
.badge.admin{background:#DCEBF0;color:#1F5C63}
.badge.warn{background:#F7E6DD;color:#8A4A22}
.empty{padding:42px 20px;text-align:center;color:var(--muted);background:var(--panel);border:1px solid var(--line);border-radius:14px}
.pager{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:18px;color:var(--muted)}

/* panels + forms */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px 22px;margin-bottom:20px}
.panel p{margin:4px 0 12px;color:var(--muted)}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:16px}
.form-grid.narrow{max-width:420px;grid-template-columns:1fr}
.form-actions{grid-column:1/-1}
.add-user{padding:14px 16px}
.add-user summary{display:inline-flex;list-style:none;cursor:pointer}
.add-user summary::-webkit-details-marker{display:none}
.row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.keybox{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:12px;border-radius:10px;background:#E7F3EE;border:1px solid #B7DACB;margin-bottom:14px}
.keybox code{word-break:break-all;font-size:13px}
pre.code{background:#15222B;color:#D6E4EA;padding:14px 16px;border-radius:10px;overflow-x:auto;margin:16px 0 8px}
.hint{font-size:13px}
.manage{position:relative;display:inline-block;text-align:left}
.manage summary{list-style:none;cursor:pointer}
.manage summary::-webkit-details-marker{display:none}
.manage-pop{position:absolute;right:0;top:calc(100% + 6px);z-index:5;width:300px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;gap:10px;box-shadow:0 12px 32px rgba(21,34,43,.14)}
.inline{display:flex;gap:8px}
.inline input{flex:1}
.inline form{display:inline}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 16px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:20}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* sign-in */
body.auth{display:grid;place-items:center;min-height:100vh;padding:20px;background:radial-gradient(60% 50% at 20% 10%,#CFE6E8 0,transparent 70%),radial-gradient(50% 50% at 90% 90%,#D5DCF3 0,transparent 70%),var(--fog)}
.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:30px;display:grid;gap:16px;box-shadow:0 18px 50px rgba(21,34,43,.1)}
.auth-card h1{font-size:24px}
.auth-card .notice{margin:0}

@media (max-width:820px){
  .app{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center;gap:10px 18px;padding:12px 14px}
  .nav{flex-direction:row;order:3;width:100%}
  .me{margin:0 0 0 auto;border:0;padding:0;text-align:right}
  .url{display:none}
  .manage-pop{right:auto;left:-220px}
}