:root{
    --bg:#0D0B14;
    --surface:#171320;
    --surface-2:#1E1830;
    --line:#2E2640;
    --purple:#A78BFA;
    --purple-dim:#5B3F94;
    --teal:#5EEAD4;
    --text:#F0EDF7;
    --muted:#8B84A3;
    --font-display:'Space Grotesk', sans-serif;
    --font-body:'Inter', sans-serif;
    --font-mono:'JetBrains Mono', monospace;
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  body{
    background:var(--bg);
    color:var(--text);
    font-family:var(--font-body);
    min-height:100vh;
    background-image:
      radial-gradient(circle at 15% 0%, rgba(167,139,250,0.09), transparent 40%),
      radial-gradient(circle at 85% 20%, rgba(94,234,212,0.05), transparent 40%);
  }
  a{color:var(--purple);}
  .wrap{max-width:860px; margin:0 auto; padding:64px 24px 120px;}

  .brand{
    display:flex;
    align-items:center;
    gap:14px;
    margin-bottom:32px;
  }
  .brand-lotus{width:52px; height:52px; flex-shrink:0;}
  .brand-name{
    font-family:var(--font-display);
    font-weight:700;
    font-size:29px;
    letter-spacing:-0.01em;
    color:var(--text);
  }

  /* Tool nav */
  .toolnav{
    display:flex;
    gap:6px;
    flex-wrap:wrap;
    margin-bottom:40px;
    border-bottom:1px solid var(--line);
    padding-bottom:16px;
  }
  .toolnav-btn{
    font-family:var(--font-mono);
    font-size:12.5px;
    padding:9px 14px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:3px;
    color:var(--muted);
    cursor:pointer;
    transition:all .12s ease;
    white-space:nowrap;
    text-decoration:none;
    display:inline-block;
  }
  .toolnav-btn.active{
    border-color:var(--purple);
    color:var(--purple);
    background:rgba(167,139,250,0.1);
  }
  .toolnav-btn:hover:not(.active){border-color:var(--muted); color:var(--text);}

  .tool-section{display:none;}
  .tool-section.active{display:block;}

  header.hero{margin-bottom:40px;}
  .eyebrow{
    font-family:var(--font-mono);
    font-size:12px;
    letter-spacing:0.12em;
    text-transform:uppercase;
    color:var(--purple);
    display:flex;
    align-items:center;
    gap:8px;
    margin-bottom:18px;
  }
  .eyebrow .dot{
    width:6px; height:6px; border-radius:50%;
    background:var(--purple);
    box-shadow:0 0 8px var(--purple);
  }
  h1{
    font-family:var(--font-display);
    font-weight:600;
    font-size:clamp(28px, 5vw, 44px);
    line-height:1.08;
    letter-spacing:-0.01em;
    max-width:14ch;
  }
  h1 em{font-style:normal; color:var(--purple);}
  .sub{
    margin-top:16px;
    color:var(--muted);
    font-size:15.5px;
    line-height:1.6;
    max-width:56ch;
  }
  .sub strong{color:var(--text); font-weight:500;}

  /* Drop tray */
  .tray{
    margin-top:32px;
    border:1.5px dashed var(--line);
    border-radius:4px;
    background:var(--surface);
    padding:44px 24px;
    text-align:center;
    position:relative;
    transition:border-color .15s ease, background .15s ease;
    cursor:pointer;
  }
  .tray.drag{border-color:var(--purple); background:var(--surface-2);}
  .tray:focus-visible{outline:2px solid var(--purple); outline-offset:3px;}
  .tray-icon{
    width:40px; height:40px;
    margin:0 auto 18px;
    border:1.5px solid var(--purple-dim);
    border-radius:3px;
    display:flex; align-items:center; justify-content:center;
  }
  .tray-icon svg{width:18px; height:18px; stroke:var(--purple);}
  .tray-title{font-family:var(--font-display); font-size:17px; font-weight:600;}
  .tray-hint{margin-top:8px; font-size:12.5px; color:var(--muted); font-family:var(--font-mono);}
  .tray input{display:none;}

  /* Settings row */
  .settings{
    margin-top:20px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:16px;
    padding:16px 4px;
    border-bottom:1px solid var(--line);
  }
  .fmt-group{display:flex; align-items:center; gap:10px; font-size:13px; color:var(--muted); font-family:var(--font-mono);}
  .fmt-btns{display:flex; gap:6px;}
  .fmt-btn{
    font-family:var(--font-mono);
    font-size:13px;
    padding:7px 14px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:3px;
    color:var(--muted);
    cursor:pointer;
    transition:all .12s ease;
  }
  .fmt-btn.active{border-color:var(--purple); color:var(--purple); background:rgba(167,139,250,0.1);}
  .quality-group{display:flex; align-items:center; gap:10px; font-size:13px; color:var(--muted); font-family:var(--font-mono);}
  .quality-group input[type=range]{accent-color:var(--purple); width:100px;}
  .quality-group.hidden{display:none;}

  /* Batch actions */
  .batch-actions{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-top:24px;
    gap:12px;
    flex-wrap:wrap;
  }
  .count{font-family:var(--font-mono); font-size:13px; color:var(--muted);}
  .count strong{color:var(--teal);}
  .btn{
    font-family:var(--font-body);
    font-weight:600;
    font-size:14px;
    padding:11px 20px;
    border-radius:3px;
    border:1px solid transparent;
    cursor:pointer;
    transition:all .12s ease;
  }
  .btn-primary{background:var(--purple); color:#150F24;}
  .btn-primary:hover{background:#BBA3FC;}
  .btn-primary:disabled{background:var(--line); color:var(--muted); cursor:not-allowed;}
  .btn-ghost{background:transparent; border-color:var(--line); color:var(--muted);}
  .btn-ghost:hover{border-color:var(--muted); color:var(--text);}

  /* Contact sheet */
  .sheet{margin-top:28px; display:flex; flex-direction:column; gap:8px;}
  .strip{
    display:grid;
    grid-template-columns:52px 1fr auto auto;
    align-items:center;
    gap:16px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:3px;
    padding:10px 14px;
    animation:develop .5s ease both;
  }
  @keyframes develop{
    from{opacity:0; filter:contrast(0.5) brightness(2); transform:translateY(4px);}
    to{opacity:1; filter:contrast(1) brightness(1); transform:translateY(0);}
  }
  .thumb{width:52px; height:52px; border-radius:2px; object-fit:cover; background:var(--bg); border:1px solid var(--line);}
  .thumb.doc{display:flex; align-items:center; justify-content:center; font-family:var(--font-mono); font-size:10px; color:var(--muted);}
  .meta{min-width:0;}
  .fname{font-size:13.5px; font-weight:500; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
  .fdelta{font-family:var(--font-mono); font-size:11.5px; color:var(--muted); margin-top:3px;}
  .fdelta .down{color:var(--teal);}
  .fdelta .up{color:var(--purple);}
  .strip-status{font-family:var(--font-mono); font-size:11px; color:var(--muted); white-space:nowrap;}
  .strip-status.ready{color:var(--teal);}
  .dl-btn{
    font-family:var(--font-mono);
    font-size:12px;
    padding:6px 12px;
    background:transparent;
    border:1px solid var(--line);
    border-radius:3px;
    color:var(--text);
    cursor:pointer;
    white-space:nowrap;
  }
  .dl-btn:hover{border-color:var(--teal); color:var(--teal);}
  .remove-btn{
    font-family:var(--font-mono);
    font-size:12px;
    background:transparent;
    border:none;
    color:var(--muted);
    cursor:pointer;
    padding:4px 8px;
  }
  .remove-btn:hover{color:var(--purple);}

  /* Reorderable file list for PDF merge */
  .order-list{margin-top:28px; display:flex; flex-direction:column; gap:6px;}
  .order-row{
    display:flex;
    align-items:center;
    gap:12px;
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:3px;
    padding:10px 14px;
  }
  .order-num{font-family:var(--font-mono); font-size:12px; color:var(--purple); width:18px;}
  .order-name{flex:1; font-size:13.5px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis;}
  .order-move{
    font-family:var(--font-mono);
    background:transparent;
    border:1px solid var(--line);
    color:var(--muted);
    border-radius:3px;
    width:26px; height:26px;
    cursor:pointer;
  }
  .order-move:hover{border-color:var(--purple); color:var(--purple);}

  .empty-hint{
    margin-top:20px;
    text-align:center;
    font-family:var(--font-mono);
    font-size:12.5px;
    color:var(--muted);
    padding:20px;
  }

  .status-line{
    margin-top:16px;
    font-family:var(--font-mono);
    font-size:12.5px;
    color:var(--muted);
  }
  .status-line.working{color:var(--purple);}
  .status-line.done{color:var(--teal);}

  .progress-bar{
    margin-top:10px;
    height:6px;
    border-radius:3px;
    background:var(--surface-2);
    border:1px solid var(--line);
    overflow:hidden;
  }
  .progress-bar-fill{
    height:100%;
    width:0%;
    background:linear-gradient(90deg, var(--purple-dim), var(--purple));
    transition:width .2s ease;
  }
  .progress-bar-fill.indeterminate{
    width:30% !important;
    animation:progress-indeterminate 1.1s ease-in-out infinite;
  }
  @keyframes progress-indeterminate{
    0%{transform:translateX(-100%);}
    100%{transform:translateX(333%);}
  }

  .safety-banner{
    margin-bottom:32px;
    background:var(--surface);
    border:1px solid var(--purple-dim);
    border-radius:6px;
    padding:20px 22px;
  }
  .safety-head{
    display:flex;
    align-items:center;
    gap:10px;
    font-family:var(--font-display);
    font-weight:600;
    font-size:16px;
    color:var(--text);
  }
  .safety-dot{
    width:8px; height:8px; border-radius:50%;
    background:var(--teal);
    box-shadow:0 0 8px var(--teal);
    flex-shrink:0;
  }
  .safety-body{
    margin-top:10px;
    font-size:13.5px;
    line-height:1.65;
    color:var(--muted);
    max-width:70ch;
  }
  .safety-body strong{color:var(--text); font-weight:600;}
  .safety-toggle{
    margin-top:12px;
    font-family:var(--font-mono);
    font-size:12px;
    background:transparent;
    border:none;
    color:var(--purple);
    cursor:pointer;
    padding:0;
  }
  .safety-toggle:hover{color:var(--teal);}
  .safety-detail{
    margin-top:12px;
    padding-top:12px;
    border-top:1px solid var(--line);
    font-size:13px;
    line-height:1.65;
    color:var(--muted);
    max-width:70ch;
  }

  .tool-info{
    margin-top:48px;
    padding-top:28px;
    border-top:1px solid var(--line);
  }
  .tool-info h2{
    font-family:var(--font-display);
    font-size:18px;
    font-weight:600;
    margin-bottom:10px;
  }
  .tool-info p{
    font-size:13.5px;
    line-height:1.7;
    color:var(--muted);
    max-width:68ch;
    margin-bottom:10px;
  }
  .tool-faq{margin-top:20px;}
  .tool-faq-item{margin-bottom:14px; max-width:68ch;}
  .tool-faq-item .q{font-size:13.5px; font-weight:600; color:var(--text); margin-bottom:4px;}
  .tool-faq-item .a{font-size:13.5px; line-height:1.65; color:var(--muted);}

  .ad-slot-inline{margin-bottom:8px;}
  .ad-slot{
    margin-top:32px;
    min-height:90px;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
  }

  .trust{
    margin-top:56px;
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:1px;
    background:var(--line);
    border:1px solid var(--line);
    border-radius:4px;
    overflow:hidden;
  }
  .trust-cell{background:var(--bg); padding:20px 18px;}
  .trust-cell .k{font-family:var(--font-mono); font-size:11px; color:var(--purple); text-transform:uppercase; letter-spacing:0.08em;}
  .trust-cell .v{margin-top:6px; font-size:13.5px; color:var(--muted); line-height:1.5;}

  footer{
    margin-top:64px;
    padding-top:24px;
    border-top:1px solid var(--line);
    font-family:var(--font-mono);
    font-size:12px;
    color:var(--muted);
    display:flex;
    justify-content:space-between;
    flex-wrap:wrap;
    gap:8px;
  }

  /* Preview grid for background remover */
  .bg-preview{
    margin-top:28px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:16px;
  }
  .bg-panel{
    background:var(--surface);
    border:1px solid var(--line);
    border-radius:4px;
    padding:14px;
    text-align:center;
  }
  .bg-panel .lbl{font-family:var(--font-mono); font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:10px;}
  .bg-panel img{
    max-width:100%;
    border-radius:3px;
    background:
      linear-gradient(45deg, #221D30 25%, transparent 25%),
      linear-gradient(-45deg, #221D30 25%, transparent 25%),
      linear-gradient(45deg, transparent 75%, #221D30 75%),
      linear-gradient(-45deg, transparent 75%, #221D30 75%);
    background-size:16px 16px;
    background-position:0 0, 0 8px, 8px -8px, -8px 0px;
  }

  @media (max-width:560px){
    .strip{grid-template-columns:44px 1fr; grid-template-rows:auto auto; row-gap:8px;}
    .strip-status{grid-column:2; text-align:right;}
    .dl-btn{grid-column:1/-1;}
    .trust{grid-template-columns:1fr;}
    .bg-preview{grid-template-columns:1fr;}
  }
  @media (prefers-reduced-motion: reduce){.strip{animation:none;}}