:root{
    --paper:#F6F3EC;
    --paper-raised:#FBF9F4;
    --ink:#2B2A26;
    --ink-soft:#6B6858;
    --ink-faint:#9A9686;
    --line:#DED8C8;
    --line-strong:#C9C2AE;
    --brick:#A23B33;
    --brick-dark:#7E2D26;
    --forest:#3F6B52;
    --forest-dark:#2E5140;
    --radius:10px;
  }
  *{box-sizing:border-box;}
  body{margin:0;background:var(--paper);color:var(--ink);font-family:'Inter',sans-serif;font-weight:400;}
  h1,h2,h3{font-family:'Fraunces',serif;font-weight:500;margin:0;letter-spacing:-0.01em;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  button{font-family:'Inter',sans-serif;cursor:pointer;border:none;background:none;}
  input{font-family:'Inter',sans-serif;}

  /* ---------- Login screen ---------- */
  #login-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;}
  .login-card{width:100%;max-width:380px;background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius);padding:40px 36px;position:relative;}
  .login-card::before{content:'';position:absolute;top:-1px;left:24px;right:24px;height:3px;background:repeating-linear-gradient(90deg,var(--line-strong) 0 6px,transparent 6px 12px);}
  .seal{width:44px;height:44px;border:1.5px solid var(--brick);border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:20px;}
  .seal svg{width:20px;height:20px;stroke:var(--brick);}
  .login-card h1{font-size:26px;margin-bottom:6px;}
  .login-card p.sub{color:var(--ink-soft);font-size:14px;margin:0 0 28px;line-height:1.5;}
  .field{margin-bottom:16px;}
  .field label{display:block;font-size:12px;text-transform:uppercase;letter-spacing:0.06em;color:var(--ink-faint);margin-bottom:6px;}
  .field input{width:100%;padding:11px 13px;border:1px solid var(--line-strong);border-radius:6px;background:#fff;font-size:14px;color:var(--ink);}
  .field input:focus{outline:2px solid var(--brick);outline-offset:1px;}
  .btn-primary{width:100%;padding:12px;background:var(--brick);color:#fff;border-radius:6px;font-size:14px;font-weight:500;margin-top:8px;transition:background .15s;}
  .btn-primary:hover{background:var(--brick-dark);}
  .btn-primary:focus-visible{outline:2px solid var(--brick-dark);outline-offset:2px;}
  .login-foot{margin-top:20px;font-size:12px;color:var(--ink-faint);text-align:center;}

  /* ---------- Dashboard ---------- */
  #dashboard{display:none;min-height:100vh;}
  header.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 32px;border-bottom:1px solid var(--line);background:var(--paper-raised);}
  .brand{display:flex;align-items:center;gap:10px;}
  .brand .seal{width:30px;height:30px;margin:0;}
  .brand .seal svg{width:14px;height:14px;}
  .brand h1{font-size:19px;}
  .user-chip{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-soft);}
  .user-chip button{color:var(--ink-faint);font-size:12px;text-decoration:underline;text-underline-offset:2px;}
  .user-chip button:hover{color:var(--ink);}

  main{max-width:960px;margin:0 auto;padding:32px;}
  .toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap;}
  .tabs{display:flex;gap:4px;background:var(--line);padding:3px;border-radius:8px;}
  .tabs button{padding:7px 14px;font-size:13px;border-radius:6px;color:var(--ink-soft);}
  .tabs button.active{background:var(--paper-raised);color:var(--ink);font-weight:500;}
  .search-upload{display:flex;gap:10px;align-items:center;}
  #search{padding:9px 12px;border:1px solid var(--line-strong);border-radius:6px;font-size:13px;width:200px;background:#fff;}
  #search:focus{outline:2px solid var(--brick);outline-offset:1px;}
  .btn-upload{display:flex;align-items:center;gap:7px;padding:9px 16px;background:var(--forest);color:#fff;border-radius:6px;font-size:13px;font-weight:500;transition:background .15s;}
  .btn-upload:hover{background:var(--forest-dark);}
  .btn-upload svg{width:15px;height:15px;stroke:#fff;}

  .ledger{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--paper-raised);}
  .ledger-head{display:grid;grid-template-columns:38px 1fr 90px 130px 90px;gap:12px;padding:10px 18px;font-size:11px;text-transform:uppercase;letter-spacing:0.06em;color:var(--ink-faint);border-bottom:1px solid var(--line);}
  .row{display:grid;grid-template-columns:38px 1fr 90px 130px 90px;gap:12px;align-items:center;padding:13px 18px;border-bottom:1px solid var(--line);font-size:13.5px;}
  .row:last-child{border-bottom:none;}
  .row:hover{background:#F1EDE2;}
  .file-seal{width:26px;height:26px;border-radius:50%;display:flex;align-items:center;justify-content:center;border:1.2px solid var(--line-strong);}
  .file-seal svg{width:13px;height:13px;stroke:var(--ink-soft);}
  .file-seal.img{border-color:var(--forest);} .file-seal.img svg{stroke:var(--forest);}
  .file-seal.doc{border-color:var(--brick);} .file-seal.doc svg{stroke:var(--brick);}
  .file-name{font-weight:500;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .file-meta{color:var(--ink-faint);font-size:12px;}
  .row-actions{display:flex;gap:6px;justify-content:flex-end;}
  .icon-btn{width:28px;height:28px;border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--ink-faint);transition:background .12s,color .12s;}
  .icon-btn:hover{background:var(--line);color:var(--ink);}
  .icon-btn.danger:hover{background:#F3DEDB;color:var(--brick-dark);}
  .icon-btn svg{width:15px;height:15px;stroke:currentColor;}

  .empty-state{padding:60px 20px;text-align:center;color:var(--ink-faint);}
  .empty-state svg{width:36px;height:36px;stroke:var(--line-strong);margin-bottom:12px;}
  .empty-state p{font-size:13.5px;margin:0;}

  #file-input{display:none;}

  .toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(10px);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:7px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;}
  .toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

  @media (max-width:640px){
    .ledger-head{display:none;}
    .row{grid-template-columns:32px 1fr auto;grid-template-areas:"seal name actions" "seal meta actions";row-gap:2px;}
    .file-meta{grid-column:2;font-size:11px;}
    .row-actions{grid-row:1/3;}
    main{padding:20px;}
  }