:root {
    --primary:#10b981; --border:#cbd5e1; --bg:#f8fafc; --text:#0f172a; --muted:#64748b;
    --danger:#ef4444; --card:#ffffff;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
    background: var(--bg);
    color: var(--text);
  }
  .container { max-width: 960px; margin: 48px auto; padding: 0 16px; }
  .card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; box-shadow: 0 2px 12px rgba(2,6,23,.05); }
  .title { margin: 0 0 6px; font-size: 22px; font-weight: 800; }
  .subtitle { margin: 0 0 18px; color: var(--muted); }
  .tabs { display:flex; gap:8px; flex-wrap:wrap; margin:14px 0 }
  .tab { padding:8px 12px; border:1px solid var(--border); border-radius:10px; background:#fff; cursor:pointer; }
  .tab.active { background: var(--primary); color:#fff; border-color: var(--primary); }
  .tab-content { display:none; border:1px solid var(--border); border-radius:12px; padding:16px; background:#fff; margin-bottom:20px; }
  .tab-content.active { display:block; }
  .controls { display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin:12px 0 }
  button { padding:8px 12px; border-radius:8px; border:1px solid var(--border); cursor:pointer; }
  #walletDisplay { display:grid; grid-template-columns:repeat(auto-fill,minmax(240px,1fr)); gap:12px; margin-top:12px; }
  .wallet-card { background:#fff; border:1px solid var(--border); border-radius:12px; padding:12px; }

  :root {
    --primary:#10b981; --border:#cbd5e1; --bg:#f8fafc; --text:#0f172a; --muted:#64748b;
    --danger:#ef4444; --card:#ffffff;
  }
  * { box-sizing: border-box; }
  body {
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
    background: var(--bg);
    color: var(--text);
  }
  .container {
    max-width: 960px;
    margin: 48px auto;
    padding: 0 16px;
  }
  .card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(2,6,23,.05);
  }
  .title {
    margin: 0 0 6px;
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.01em;
  }
  .subtitle {
    margin: 0 0 18px;
    color: var(--muted);
  }

  .dropzone {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 12px;
    background: #fff;
    padding: 28px;
    text-align: center;
    transition: border-color .18s, background .18s;
  }
  .dropzone.dragover {
    border-color: var(--primary);
    background: #f0fdf4;
  }
  .dz-inner {
    max-width: 560px;
    margin: 0 auto;
  }
  .dz-icon {
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width: 48px;
    height:48px;
    color: var(--primary);
    margin-bottom: 8px;
  }
  .dz-title {
    font-weight: 700;
    margin-bottom: 6px;
  }
  .dz-help {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 14px;
  }

  .toolbar {
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    justify-content:center;
  }
  .btn {
    appearance: none;
    border: 1px solid var(--border);
    background:#fff;
    color: var(--text);
    padding: 10px 14px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    transition: .18s;
  }
  .btn:hover {
    border-color:#94a3b8;
    transform: translateY(-1px);
  }
  .btn-primary {
    background: var(--primary);
    color:#fff;
    border-color: var(--primary);
  }
  .btn-primary:hover {
    filter: brightness(.96);
  }
  .btn-danger {
    border-color: #fecaca;
    background: #fee2e2;
    color: #991b1b;
  }
  .btn-danger:hover {
    filter: brightness(.98);
  }

  input[type=file] {
    display:none;
  }

  .summary {
    margin-top: 14px;
    display:flex;
    gap:16px;
    flex-wrap:wrap;
    align-items:center;
    justify-content:space-between;
    color: var(--muted);
    font-size: 14px;
  }
  .summary .stats {
    display:flex;
    gap:16px;
    flex-wrap:wrap;
  }
  .summary b {
    color: var(--text);
  }

  .preview {
    margin-top: 18px;
    display:grid;
    grid-template-columns: repeat( auto-fit, minmax(220px, 1fr) );
    gap: 14px;
  }
  .item {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: #fff;
    display:flex;
    flex-direction: column;
    position:relative;
  }
  .thumb {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
    background: #f1f5f9;
  }
  .meta {
    padding: 10px;
    display:grid;
    gap:8px;
  }
  .filename {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .label {
    font-size: 12px;
    color: var(--muted);
  }
  .input {
    width:100%;
    padding: 8px 10px;
    border:1px solid var(--border);
    border-radius: 8px;
    outline: none;
    transition: border-color .18s, box-shadow .18s;
  }
  .input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(16,185,129,.16);
  }
  .remove {
    position:absolute;
    top:8px;
    right:8px;
    border:none;
    background:#fff;
    border-radius: 999px;
    width: 32px;
    height:32px;
    box-shadow: 0 2px 8px rgba(0,0,0,.12);
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
  }
  .remove:hover {
    background: #fef2f2;
    color: #b91c1c;
  }

  .progress {
    display:none;
    margin-top:16px;
  }
  .bar-wrap {
    background:#e5e7eb;
    border-radius: 10px;
    height: 10px;
    overflow: hidden;
  }
  .bar {
    height:100%;
    width:0%;
    background: linear-gradient(90deg, #10b981, #34d399);
    transition: width .2s;
  }
  .progress-label {
    margin-top:8px;
    font-size: 13px;
    color: var(--muted);
  }

  .output {
    display:none;
    margin-top: 18px;
    background: #0b1220;
    color: #d1e7ff;
    padding: 16px;
    border-radius: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 13px;
    overflow: auto;
    max-height: 320px;
    border: 1px solid #0b2942;
  }
  .out-actions {
    display:none;
    margin-top:10px;
    gap:10px;
    justify-content:flex-end;
  }
  .footer {
    margin-top: 18px;
    display:flex;
    justify-content:center;
    color: var(--muted);
    font-size: 12px;
  }