:root{
  color-scheme:light dark;
  --bg:#f4f5f7;--card:#fff;--text:#17191d;--muted:#666b74;--border:#d9dde4;
  --accent:#2667e8;--accent2:#174fb9;--danger:#a52424;--warn:#7d5d00;--success:#176b3a;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#111317;--card:#1b1e24;--text:#f5f6f7;--muted:#aab0b9;--border:#343a45;
  --accent:#73a1ff;--accent2:#9dbbff;--danger:#ff8f8f;--warn:#ffd77a;--success:#7de0a2}
}
*{box-sizing:border-box}
html{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
body{margin:0;min-height:100%;background:var(--bg)}
.shell{max-width:1080px;margin:0 auto;padding:32px 18px}.shell.narrow{max-width:560px;padding-top:64px}
.card{background:var(--card);border:1px solid var(--border);border-radius:22px;padding:26px;margin-bottom:20px}
.brand{font-size:42px;margin-bottom:10px}h1{font-size:32px;line-height:1.1;margin:0 0 8px}h2{font-size:21px;margin:0 0 8px}
p{line-height:1.5}.small{font-size:14px;margin:5px 0 0}.muted{color:var(--muted)}
label{display:block;font-weight:650;margin:14px 0}
input,select{width:100%;margin-top:7px;padding:13px 14px;border-radius:12px;border:1px solid var(--border);background:var(--card);color:var(--text);font:inherit;font-size:16px}
input[type=file]{padding:10px}
button,.button-link,.small-btn{display:inline-block;border:0;border-radius:12px;padding:13px 18px;background:var(--accent);color:#fff;text-decoration:none;font:inherit;font-weight:750;cursor:pointer}
form>button{margin-top:10px}.button-link.secondary,.secondary-btn,.small-btn{background:transparent;color:var(--text);border:1px solid var(--border)}
.secondary-btn{padding:10px 12px;border-radius:10px;margin-top:7px}.danger-btn{background:transparent;color:var(--danger);border:1px solid var(--danger);padding:10px 12px;border-radius:10px}
.alert{border-radius:12px;padding:12px 14px;margin:0 0 18px}.alert.error{border:1px solid var(--danger);color:var(--danger)}.alert.warning{border:1px solid var(--warn);color:var(--warn)}.alert.success{border:1px solid var(--success);color:var(--success)}
.topbar{display:flex;justify-content:space-between;gap:16px;align-items:center;margin-bottom:22px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;color:var(--muted);margin-bottom:5px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;flex-wrap:wrap}.inline-form{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap}.inline-form input,.inline-form select{margin-top:0;min-width:180px}.inline-form button{margin-top:0}.grow{flex:1}
.category-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.chip{padding:9px 13px;border-radius:999px;border:1px solid var(--border);color:var(--text);text-decoration:none;font-weight:650}.chip.active{background:var(--accent);color:#fff;border-color:var(--accent)}
.manage-box,.file-manage{margin-top:18px}.manage-box summary,.file-manage summary{cursor:pointer;font-weight:700}.manage-list{margin-top:12px;display:grid;gap:10px}.manage-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 0;border-top:1px solid var(--border)}
.upload-form{max-width:680px}.file-list{display:grid;gap:12px;margin-top:16px}.file-row{border:1px solid var(--border);border-radius:16px;padding:15px}.file-main{display:flex;gap:12px;align-items:center;min-width:0}.file-icon{font-size:30px}.file-info{display:flex;flex-direction:column;gap:4px;min-width:0;overflow-wrap:anywhere}.file-info span{font-size:14px;color:var(--muted)}
.file-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.small-btn{padding:8px 11px;border-radius:10px;font-size:14px}.file-edit-grid{display:grid;gap:10px;margin-top:12px}.empty{padding:24px;border:1px dashed var(--border);border-radius:14px;color:var(--muted);text-align:center;margin-top:16px}
.password-wrap{position:relative}.password-wrap input{padding-right:52px}.password-toggle{position:absolute;right:8px;top:50%;transform:translateY(-50%);width:40px;height:40px;border:0;border-radius:10px;background:transparent;color:var(--text);cursor:pointer;font-size:21px;line-height:1;padding:0;margin:0}
@media(max-width:640px){.shell{padding:20px 14px}.shell.narrow{padding-top:24px}.card{padding:20px}.topbar{align-items:flex-start}.topbar h1{font-size:28px}.section-head{align-items:stretch}.inline-form{display:grid;grid-template-columns:1fr}.inline-form input,.inline-form select{min-width:0}.manage-row{display:block}.delete-form{margin-top:8px}}