:root {}

  .clean-header {
    text-align: center;
    padding: 36px 20px 24px;
    max-width: 900px;
    margin: 0 auto;
  }

  .clean-header .badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: rgba(0, 210, 255, 0.08);
    border: 1px solid rgba(0, 210, 255, 0.25);
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 16px;
    text-transform: uppercase;
  }

  .clean-header h1 {
    font-size: 2.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-main);
    margin-bottom: 12px;
  }

  .clean-header p {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 720px;
    margin: 0 auto;
  }

  .signer-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px 60px;
  }

  /* Upload Dropzone */
  .upload-dropzone {
    background: var(--bg-base);
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 24px;
  }

  .upload-dropzone:hover, .upload-dropzone.dragover {
    border-color: var(--accent);
    background: rgba(0, 210, 255, 0.04);
  }

  .dropzone-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: rgba(0, 210, 255, 0.1);
    color: var(--accent);
    border-radius: 12px;
    margin: 0 auto 14px;
  }

  .upload-dropzone h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
  }

  .upload-dropzone p {
    font-size: 0.95rem;
    color: var(--text-muted);
  }

  /* Workspace View */
  .signer-workspace {
    display: none;
    flex-direction: column;
    gap: 16px;
  }

  /* Toolbar */
  .signer-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 18px;
  }

  .toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
  }

  .tool-btn:hover {
    background: var(--bg-surface);
    color: var(--text-main);
    border-color: var(--accent);
  }

  .tool-btn.primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #08090d;
    font-weight: 700;
  }

  .tool-btn.primary:hover {
    background: #33dcff;
    box-shadow: 0 0 16px rgba(0, 210, 255, 0.35);
  }

  /* Document Stage Canvas */
  .stage-viewport {
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    display: flex;
    justify-content: center;
    overflow-x: auto;
    min-height: 700px;
  }

  .page-wrapper {
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    background: #ffffff;
    user-select: none;
  }

  #pdfCanvas {
    display: block;
  }

  /* Placed Elements on Page */
  .placed-stamp {
    position: absolute;
    cursor: move;
    outline: 2px dashed rgba(0, 210, 255, 0.7);
    background: rgba(0, 210, 255, 0.05);
    padding: 0;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
  }

  .placed-stamp img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    max-width: 100%;
    max-height: 100%;
    pointer-events: none;
  }

  .placed-stamp .stamp-delete {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background: #ef4444;
    color: var(--text-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
    z-index: 11;
  }

  .placed-stamp .stamp-resize {
    position: absolute;
    bottom: -8px;
    right: -8px;
    width: 18px;
    height: 18px;
    background: var(--accent);
    color: #08090d;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: nwse-resize;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    z-index: 11;
  }

  .placed-stamp .stamp-rotate-btn {
    position: absolute;
    bottom: -8px;
    left: -8px;
    width: 20px;
    height: 20px;
    background: #10b981;
    color: var(--text-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    z-index: 11;
  }

  .placed-stamp .stamp-opac-btn {
    position: absolute;
    top: -10px;
    left: -10px;
    width: 20px;
    height: 20px;
    background: #f59e0b;
    color: var(--text-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    z-index: 11;
  }

  /* Signature Modal */
  .modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 20px;
  }

  .modal-overlay.active {
    display: flex;
  }

  .modal-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 540px;
    max-width: 100%;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
  }

  .modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
  }

  .modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
  }

  .modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-base);
  }

  .tab-btn {
    flex: 1;
    padding: 12px;
    text-align: center;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
  }

  .tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    background: rgba(0, 210, 255, 0.04);
  }

  .modal-body {
    padding: 20px;
  }

  .pad-canvas-wrap {
    background: #ffffff;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    height: 180px;
    position: relative;
    overflow: hidden;
  }

  #sigPadCanvas {
    width: 100%;
    height: 100%;
    cursor: crosshair;
    display: block;
  }

  .pad-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
  }

  .color-dots {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .color-dot {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
  }

  .color-dot.active {
    border-color: var(--text-main);
    box-shadow: 0 0 8px rgba(0, 210, 255, 0.4);
  }

  /* FAQ Section */
  .faq-container {
    max-width: 900px;
    margin: 60px auto 20px;
    padding: 0 20px;
  }

  .faq-heading {
    text-align: center;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 24px;
  }

  .faq-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 16px;
  }

  .faq-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 8px;
  }

  .faq-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
  }