:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --border: #e3e5e8;
  --text: #1f2328;
  --muted: #6a737d;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --danger: #dc2626;
  --tool-bg: #f8fafc;
  --tool-active: #dbeafe;
  --shadow: 0 1px 2px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.06);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body {
  margin: 0; padding: 0; height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px; padding: 0 16px;
  background: #fff; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .logo {
  background: var(--accent); color: #fff;
  font-weight: 700; padding: 4px 8px; border-radius: 6px; font-size: 14px;
}
.brand .title { font-weight: 600; }
.doc-info { flex: 1; text-align: center; color: var(--muted); font-size: 14px; }
.doc-name { font-weight: 500; }
.top-actions { display: flex; gap: 8px; align-items: center; }
.autosave-badge {
  font-size: 12px; color: var(--muted);
  padding: 4px 8px; background: #f1f3f5; border-radius: 12px;
  opacity: 0.5; transition: opacity .25s;
}

.btn {
  appearance: none; background: #fff; color: var(--text);
  border: 1px solid var(--border); padding: 8px 14px;
  border-radius: 6px; font-size: 14px; cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn:hover:not(:disabled) { background: #f1f3f5; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.small { padding: 4px 10px; font-size: 13px; }

.layout {
  display: grid; grid-template-columns: 260px 1fr;
  height: calc(100vh - 56px);
}

.sidebar {
  background: var(--panel); border-right: 1px solid var(--border);
  overflow-y: auto; padding: 16px;
}
.panel { margin-bottom: 24px; }
.panel h3 {
  font-size: 12px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); margin: 0 0 10px;
}
.tools { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.tool {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 10px 4px; background: var(--tool-bg);
  border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; font-size: 12px; color: var(--text);
}
.tool:hover { background: #eef2f6; }
.tool.active { background: var(--tool-active); border-color: var(--accent); color: var(--accent-dark); }
.tool .icon { font-size: 18px; line-height: 1; }

.prop-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; margin-bottom: 8px; font-size: 13px;
}
.prop-row label { color: var(--muted); }
.prop-row input[type=text], .prop-row input[type=number] {
  width: 130px; padding: 4px 6px;
  border: 1px solid var(--border); border-radius: 4px;
}
.prop-row input[type=color] { width: 36px; height: 26px; padding: 0; border: 1px solid var(--border); border-radius: 4px; background: none; }

.library { list-style: none; margin: 8px 0 0; padding: 0; max-height: 260px; overflow-y: auto; }
.library li {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 8px; border-radius: 4px; font-size: 13px;
  cursor: pointer;
}
.library li:hover { background: #f1f3f5; }
.library .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.library .x { color: var(--muted); padding: 0 4px; font-size: 16px; }
.library .x:hover { color: var(--danger); }

.zoom { display: flex; align-items: center; gap: 8px; }
.actions { display: flex; flex-direction: column; gap: 6px; }
.actions .btn { text-align: left; }
.sig-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sig-row-buttons { display: flex; flex-direction: column; gap: 4px; }
.sig-row img {
  max-width: 140px; max-height: 50px;
  border: 1px solid var(--border); border-radius: 4px;
  background: #fff; padding: 2px;
}
.hint { font-size: 11px; color: var(--muted); margin: 6px 0 0; }
.snippets { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.snippet {
  position: relative; cursor: pointer; padding: 4px;
  background: #fff; border: 1px solid var(--border); border-radius: 4px;
  text-align: center; transition: border-color .12s, transform .1s;
}
.snippet:hover { border-color: var(--accent); transform: translateY(-1px); }
.snippet img {
  max-width: 100%; max-height: 40px; object-fit: contain;
  display: block; margin: 0 auto;
}
.snippet .x {
  position: absolute; top: 0; right: 2px;
  color: var(--muted); font-size: 15px; cursor: pointer;
  padding: 0 4px;
}
.snippet .x:hover { color: var(--danger); }
.zoom span { flex: 1; text-align: center; font-size: 13px; }

.canvas-area {
  overflow-y: auto; position: relative;
  padding: 24px; display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.empty {
  margin: 60px auto; text-align: center; color: var(--muted);
  border: 2px dashed var(--border); padding: 60px 40px; border-radius: 12px;
  background: #fff; max-width: 520px;
}
.empty h2 { margin: 0 0 8px; color: var(--text); }
.canvas-area.dragover .empty { border-color: var(--accent); background: #eff6ff; }

.pages { display: flex; flex-direction: column; gap: 24px; align-items: center; width: 100%; }

.page {
  position: relative; background: #fff; box-shadow: var(--shadow);
  border-radius: 4px; overflow: hidden;
}
.page canvas { display: block; }
/* Deep-select text layer (above canvas, behind overlay unless active) */
.page .text-layer {
  position: absolute; inset: 0;
  pointer-events: none;
  z-index: 0;
}
.page .text-layer .text-item {
  position: absolute;
  pointer-events: none;
  background: transparent;
  border-radius: 1px;
  transition: background-color .12s;
}
.page.deepselect-active .text-layer .text-item {
  outline: 1px dashed rgba(37,99,235,.35);
}
.page.deepselect-active .text-layer .text-item.in-marquee {
  background: rgba(255, 215, 0, .45);
  outline-color: #ff8c00;
}
.page .marquee {
  position: absolute; pointer-events: none;
  border: 1.5px dashed #2563eb;
  background: rgba(37, 99, 235, .12);
  z-index: 4;
}
.page .marquee-menu {
  position: absolute; z-index: 5;
  background: #2b2f36; color: #fff;
  border-radius: 6px; padding: 4px;
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
  display: flex; gap: 2px; font-size: 13px;
}
.page .marquee-menu button {
  background: transparent; color: #fff; border: none;
  padding: 6px 10px; border-radius: 4px; cursor: pointer;
}
.page .marquee-menu button:hover { background: rgba(255,255,255,.15); }
.page .marquee-menu button.primary { background: #2563eb; }
.page .marquee-menu button.danger { color: #fca5a5; }
.page.paste-mode .overlay,
.page.paste-mode .text-layer { cursor: copy !important; }

.page .overlay {
  position: absolute; inset: 0;
  cursor: crosshair;
}
.page .overlay.tool-select { cursor: default; }
.page .overlay.tool-text,
.page .overlay.tool-date  { cursor: text; }
.page .overlay.tool-check,
.page .overlay.tool-cross,
.page .overlay.tool-dot   { cursor: copy; }

.ann {
  position: absolute; min-width: 8px; min-height: 14px;
  cursor: move; user-select: none;
  font-family: Helvetica, Arial, sans-serif;
  line-height: 1.15;
  padding: 1px 3px;
  border: 1px solid transparent;
  border-radius: 2px;
  transition: background-color .12s, border-color .12s;
}
.ann:hover:not(.editing):not(.selected) {
  border-color: rgba(255, 140, 0, .35);
  background: rgba(255, 140, 0, .04);
}
.ann.selected,
.ann.editing {
  border: 1.5px dashed #ff8c00;
  background: rgba(255, 255, 255, .65);
}
.ann.editing {
  cursor: text;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  user-select: text;
  width: auto !important;
  min-width: 8px;
  white-space: pre;
  outline: none;
}
.ann img { display: block; pointer-events: none; width: 100%; height: 100%; }
.ann .handle {
  position: absolute;
  width: 10px; height: 10px;
  background: #16a34a;            /* pdffiller green */
  border: 1.5px solid #fff;
  box-shadow: 0 0 0 1px #16a34a;
  display: none;
}
.ann.selected .handle,
.ann.editing  .handle { display: block; }
.ann .handle.nw { left: -6px;  top: -6px;    cursor: nwse-resize; }
.ann .handle.ne { right: -6px; top: -6px;    cursor: nesw-resize; }
.ann .handle.sw { left: -6px;  bottom: -6px; cursor: nesw-resize; }
.ann .handle.se { right: -6px; bottom: -6px; cursor: nwse-resize; }

/* Floating pdffiller-style mini-toolbar */
.ann-toolbar {
  position: absolute; z-index: 60;
  display: flex; align-items: center; gap: 2px;
  background: #2b2f36; color: #fff;
  padding: 4px 6px;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(0,0,0,.22);
  font-size: 13px;
  white-space: nowrap;
  user-select: none;
}
.ann-toolbar::after {
  content: ""; position: absolute; bottom: -5px; left: 16px;
  width: 10px; height: 10px; background: #2b2f36;
  transform: rotate(45deg);
}
.ann-toolbar .at-move { cursor: move; padding: 4px 6px; }
.ann-toolbar .at-btn {
  background: transparent; color: #fff; border: none;
  padding: 4px 8px; border-radius: 4px; cursor: pointer; font-size: 13px;
  display: flex; align-items: center; gap: 4px;
}
.ann-toolbar .at-btn:hover { background: rgba(255,255,255,.12); }
.ann-toolbar .at-ok {
  background: #fff; color: #1f2328; font-weight: 600; padding: 3px 10px;
}
.ann-toolbar .at-ok:hover { background: #e7e9ec; }
.ann-toolbar .at-sep {
  width: 1px; height: 18px; background: rgba(255,255,255,.18); margin: 0 3px;
}
.ann-toolbar select {
  background: transparent; color: #fff;
  border: none; font-size: 13px; padding: 3px 4px;
  cursor: pointer; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #fff 50%),
                    linear-gradient(135deg, #fff 50%, transparent 50%);
  background-position: calc(100% - 8px) 9px, calc(100% - 4px) 9px;
  background-size: 4px 4px;
  background-repeat: no-repeat;
  padding-right: 16px;
}
.ann-toolbar select option { color: #111; }
.ann-toolbar .at-color {
  position: relative; padding: 2px 6px;
}
.ann-toolbar .at-color input[type=color] {
  position: absolute; inset: 0; opacity: 0; cursor: pointer; border: none;
}
.ann-toolbar .at-color .swatch {
  width: 14px; height: 14px; border-radius: 2px; border: 1px solid rgba(255,255,255,.4);
  display: inline-block;
}
.ann-toolbar .at-color .glyph { font-weight: 700; margin-right: 4px; }
.ann-toolbar .at-trash { font-size: 15px; }
.ann-toolbar .at-btn.active { background: rgba(255,255,255,.2); }
.ann-toolbar .at-color .swatch { background: #111; }
.ann[data-type=rect] {
  background: transparent;
  border: 2px solid currentColor;
}
.ann[data-type=rect].selected,
.ann[data-type=rect].editing { border-style: solid; }
.ann[data-type=line] { background: transparent; border-color: transparent; }
.ann[data-type=line].selected,
.ann[data-type=line].editing { border: 1.5px dashed #ff8c00; }
.ann[data-type=whiteout] {
  background: #ffffff;
  border: 1px solid transparent;
  /* Pass clicks through so new elements (text, check, etc.) can be placed on
     top of a whiteout. Re-enabled inside the Select tool only. */
  pointer-events: none;
}
.page .overlay.tool-select .ann[data-type=whiteout] { pointer-events: auto; }
.ann[data-type=whiteout].selected,
.ann[data-type=whiteout].editing { border: 1.5px dashed #ff8c00; }

.modal {
  position: fixed; inset: 0; background: rgba(0,0,0,.5);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal-box {
  background: #fff; padding: 24px; border-radius: 8px; box-shadow: var(--shadow);
  max-width: 90vw;
}
.modal-box.small { width: 360px; }
.modal-box h3 { margin: 0 0 12px; }
.modal-box label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.modal-box input[type=text] {
  width: 100%; padding: 8px; border: 1px solid var(--border); border-radius: 4px;
  font-size: 14px;
}
.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
#sigPad { border: 1px dashed var(--border); background: #fafbfc; cursor: crosshair; touch-action: none; }
.sig-tabs { display: flex; gap: 4px; margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.sig-tab {
  background: transparent; border: none; padding: 8px 16px;
  font-size: 14px; cursor: pointer; color: var(--muted);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.sig-tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }
.sig-pane label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.sig-pane input[type=text] {
  width: 100%; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: 4px; font-size: 16px;
}
.sig-choices { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.sig-choice {
  border: 1.5px solid var(--border); border-radius: 6px; padding: 14px 16px;
  cursor: pointer; background: #fff; font-size: 36px; line-height: 1.15;
  color: #111; text-align: center; min-height: 56px;
  display: flex; align-items: center; justify-content: center;
  transition: border-color .15s, background-color .15s;
}
.sig-choice:hover { border-color: var(--accent); background: #f5f8ff; }
.sig-choice.selected { border-color: var(--accent); background: #eff6ff; }

.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #111; color: #fff; padding: 10px 16px; border-radius: 6px;
  font-size: 14px; z-index: 200; box-shadow: var(--shadow);
}