/* =========================================================
   GN PDF — Editor Workspace Styles (V1.1)
   ========================================================= */

.gn-editor {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 68px);
  background: var(--canvas-bg);
}

/* Top toolbar */
.gn-toolbar {
  position: sticky;
  top: 68px;
  z-index: 30;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  backdrop-filter: blur(12px);
}
.gn-tool {
  appearance: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 8px 12px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-soft);
  cursor: pointer;
  transition: all var(--t-fast);
  position: relative;
  white-space: nowrap;
  flex-shrink: 0;
}
.gn-tool:hover { color: var(--text); background: var(--bg-soft); }
.gn-tool.is-active {
  background: var(--brand-soft);
  color: var(--brand);
  border-color: rgba(132,3,158,.25);
}
html[data-theme="dark"] .gn-tool.is-active {
  background: rgba(132,3,158,.22);
  color: #e9aef4;
}
.gn-tool svg { flex-shrink: 0; }
.gn-tool__sep {
  width: 1px;
  height: 22px;
  background: var(--border);
  margin: 0 6px;
  flex-shrink: 0;
}

/* Tool sub-popovers (shapes type picker, color pickers) */
.gn-popover {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 10px;
  display: none;
  flex-wrap: wrap;
  gap: 6px;
  min-width: 240px;
  z-index: 100;
}
.gn-tool-wrap.is-open .gn-popover { display: flex; }
.gn-popover button {
  appearance: none;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 8px 10px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-soft);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.gn-popover button:hover { background: var(--bg-soft); color: var(--text); }
.gn-popover button.is-active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* Color picker variant */
.gn-popover--color { width: 280px; flex-direction: column; gap: 10px; }
.gn-color-row {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
  width: 100%;
}
.gn-color-swatch {
  width: 28px !important;
  height: 28px !important;
  border-radius: 50% !important;
  border: 2px solid var(--border) !important;
  padding: 0 !important;
  cursor: pointer;
  transition: transform var(--t-fast), border-color var(--t-fast);
  position: relative;
}
.gn-color-swatch:hover { transform: scale(1.12); }
.gn-color-swatch.is-active {
  border-color: var(--brand) !important;
  box-shadow: 0 0 0 2px var(--bg);
}
.gn-color-custom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-soft);
  font-size: 13px;
  font-weight: 600;
  width: 100%;
}
.gn-color-custom input[type="color"] {
  width: 48px;
  height: 32px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  cursor: pointer;
  padding: 2px;
  background: var(--surface);
}
.gn-color-custom input[type="range"] { flex: 1; }
.gn-popover__hint {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0;
  width: 100%;
}
.gn-popover__hint kbd {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Workspace */
.gn-workspace {
  flex: 1;
  display: grid;
  grid-template-columns: 220px 1fr 300px;
  gap: 0;
  min-height: 0;
}
.gn-sidebar-left,
.gn-sidebar-right {
  background: var(--surface);
  border-inline-end: 1px solid var(--border);
  padding: 16px 12px;
  overflow-y: auto;
  max-height: calc(100vh - 68px - 60px);
  position: sticky;
  top: calc(68px + 60px);
}
.gn-sidebar-right {
  border-inline-start: 1px solid var(--border);
  border-inline-end: 0;
}
.gn-sidebar-left h4,
.gn-sidebar-right h4 {
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 12px 0 8px;
}

/* Page thumbnails */
.gn-thumbs { display: flex; flex-direction: column; gap: 10px; }
.gn-thumb {
  border: 2px solid transparent;
  border-radius: 6px;
  padding: 4px;
  background: var(--bg-soft);
  cursor: pointer;
  position: relative;
  transition: border-color var(--t-fast);
}
.gn-thumb canvas { width: 100%; height: auto; display: block; border-radius: 3px; }
.gn-thumb.is-active { border-color: var(--brand); }
.gn-thumb__num {
  position: absolute;
  top: 2px; inset-inline-start: 2px;
  background: var(--brand);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 4px;
}

/* Canvas area */
.gn-canvas-area {
  padding: 28px 16px 120px;
  overflow-y: auto;
  overflow-x: auto;
  max-height: calc(100vh - 68px - 60px);
}
.gn-page-wrap {
  margin: 0 auto 36px;
  position: relative;
  width: fit-content;
  max-width: 100%;
}
.gn-page-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--text-soft);
  flex-wrap: wrap;
}
.gn-page-controls__num {
  background: var(--brand);
  color: #fff;
  width: 28px;
  height: 28px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-size: 13px;
}
.gn-icon-btn {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid; place-items: center;
  cursor: pointer;
  color: var(--text-soft);
  transition: all var(--t-fast);
}
.gn-icon-btn:hover { border-color: var(--brand); color: var(--brand); }

/* ===== THE CRITICAL FIX: stack pdf canvas + fabric overlay properly =====
   Fabric.js wraps the canvas element in `.canvas-container`. We need to
   position that wrapper absolutely on top of the PDF canvas. */
.gn-page {
  position: relative;
  background: var(--canvas-page);
  box-shadow: var(--canvas-shadow);
  border-radius: 4px;
  overflow: hidden;
  touch-action: none; /* allow finger drawing on fabric */
}
.gn-page > canvas.gn-page__pdf-canvas {
  display: block;
  position: relative;
  z-index: 1;
  max-width: 100%;
  height: auto;
}

/* V1.3 — pdf.js text layer DOM (invisible but hit-testable). Sits BETWEEN
   the pdfCanvas (z=1) and the Fabric editing overlay (z=2). It must be
   pointer-events: none so it doesn't block Fabric mouse events — but
   document.elementsFromPoint() still finds its spans regardless. */
.gn-text-layer {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 1 !important;
  opacity: 0;
  pointer-events: none;
  line-height: 1.0;
  user-select: none;
  overflow: hidden;
}
.gn-text-layer > span {
  position: absolute;
  white-space: pre;
  color: transparent;
  transform-origin: 0% 0%;
  cursor: text;
}

/* Fabric injects this wrapper around our overlay canvas */
.gn-page .canvas-container {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  z-index: 2 !important;
}
.gn-page .canvas-container canvas {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
}

.gn-insert-page {
  display: block;
  margin: 0 auto;
  background: transparent;
  border: 2px dashed var(--border-strong);
  border-radius: 10px;
  padding: 14px 22px;
  color: var(--text-soft);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t);
}
.gn-insert-page:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--brand-soft);
}
html[data-theme="dark"] .gn-insert-page:hover { background: rgba(132,3,158,.12); }

/* Floating apply bar */
.gn-apply-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand);
  color: #fff;
  border-radius: 999px;
  padding: 6px 6px 6px 22px;
  display: flex; align-items: center; gap: 14px;
  box-shadow: var(--shadow-purple);
  font-weight: 700;
  z-index: 40;
  max-width: calc(100vw - 24px);
  font-size: 14px;
}
.gn-apply-bar button {
  appearance: none;
  background: #fff;
  color: var(--brand);
  border: 0;
  height: 44px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.gn-apply-bar button:hover { background: var(--gold); }

/* Property panel (right) */
.gn-prop {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 14px;
}
.gn-prop label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 8px 0 4px;
}
.gn-prop input[type="text"],
.gn-prop input[type="number"],
.gn-prop select {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 0 10px;
  font-family: var(--font-ui);
}
.gn-prop input[type="color"] {
  width: 100%;
  height: 36px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  padding: 2px;
}
.gn-prop__row { display: flex; gap: 8px; }
.gn-prop__row > * { flex: 1; }
.gn-prop__btn-row { display: flex; gap: 6px; flex-wrap: wrap; }
.gn-chip {
  appearance: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-soft);
  cursor: pointer;
}
.gn-chip.is-active { background: var(--brand); color: #fff; border-color: var(--brand); }

/* Smart alignment guides drawn as fabric lines - styling handled inline */

/* Loader spinner */
.gn-spinner {
  width: 38px;
  height: 38px;
  border: 3px solid var(--border);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: gn-spin 0.9s linear infinite;
  margin: 30px auto;
}
@keyframes gn-spin { to { transform: rotate(360deg); } }
.gn-loading-text {
  text-align: center;
  color: var(--text-soft);
  font-weight: 500;
  margin-top: -10px;
}

/* Download / preview screen */
.gn-finish {
  padding: 60px 24px;
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}
.gn-finish__title {
  font-family: var(--font-brand);
  font-size: clamp(28px, 4vw, 38px);
  margin: 0 0 12px;
  color: var(--text);
}
.gn-finish__sub { color: var(--text-soft); font-size: 17px; margin: 0 0 28px; }
.gn-finish__preview {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  margin: 24px 0;
}
.gn-finish__preview iframe { width: 100%; min-height: 400px; max-height: 70vh; }
.gn-finish__actions {
  display: flex; gap: 14px; justify-content: center; flex-wrap: wrap;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS — fully mobile friendly
   ============================================================ */

/* < 1100px: hide right sidebar */
@media (max-width: 1100px) {
  .gn-workspace { grid-template-columns: 180px 1fr; }
  .gn-sidebar-right { display: none; }
}

/* < 900px: scroll toolbar horizontally instead of wrapping, hide left sidebar */
@media (max-width: 900px) {
  .gn-workspace { grid-template-columns: 1fr; }
  .gn-sidebar-left { display: none; }

  .gn-toolbar {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding: 8px 12px;
  }
  .gn-toolbar::-webkit-scrollbar { height: 4px; }
  .gn-toolbar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 999px; }
  .gn-tool { padding: 6px 10px; height: 38px; font-size: 13px; }

  .gn-canvas-area { padding: 16px 8px 120px; }

  .gn-apply-bar { padding: 4px 4px 4px 18px; gap: 10px; }
  .gn-apply-bar button { height: 40px; padding: 0 16px; font-size: 13px; }
}

/* < 600px: hide tool labels, icons only */
@media (max-width: 600px) {
  .gn-tool span { display: none; }
  .gn-tool { padding: 8px 10px; }
  .gn-toolbar { padding: 6px 10px; gap: 2px; }
  .gn-tool__sep { margin: 0 4px; }

  .gn-page-controls { gap: 4px; }
  .gn-icon-btn { width: 30px; height: 30px; }
  .gn-page-controls__num { width: 24px; height: 24px; font-size: 12px; }

  .gn-finish { padding: 32px 16px; }
}

/* Signature canvas modal */
.gn-modal {
  position: fixed; inset: 0;
  background: rgba(20, 8, 30, 0.6);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center; justify-content: center;
  z-index: 200;
  padding: 20px;
}
.gn-modal.is-open { display: flex; }
.gn-modal__card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border);
}
.gn-modal__title {
  font-family: var(--font-brand);
  font-size: 22px;
  margin: 0 0 16px;
  color: var(--text);
}
.gn-modal__tabs { display: flex; gap: 6px; margin-bottom: 14px; border-bottom: 1px solid var(--border); overflow-x: auto; }
.gn-modal__tab {
  appearance: none;
  background: transparent;
  border: 0;
  padding: 10px 14px;
  color: var(--text-soft);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.gn-modal__tab.is-active {
  color: var(--brand);
  border-bottom-color: var(--brand);
}
.gn-sig-canvas {
  width: 100%;
  height: 200px;
  background: var(--bg-soft);
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
  display: block;
  touch-action: none;
}
.gn-modal__actions {
  display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px;
  flex-wrap: wrap;
}

/* Help tip shown on first editor open */
.gn-help-tip {
  position: fixed;
  top: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-purple);
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity .25s ease;
}
.gn-help-tip.is-show { opacity: 1; }

/* ============================================================
   V1.2 additions: Image Library + Add More PDF button
   ============================================================ */

/* "Add More PDF" prominent button at the end of canvas area */
.gn-add-more-pdf {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 18px auto 80px;
  padding: 16px 28px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-deep) 100%);
  color: #fff;
  border: 0;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  box-shadow: var(--shadow-purple);
  transition: transform var(--t-fast), box-shadow var(--t);
  min-width: 320px;
  max-width: 90%;
}
.gn-add-more-pdf:hover { transform: translateY(-2px); box-shadow: 0 16px 36px rgba(132,3,158,.38); }
.gn-add-more-pdf strong { font-weight: 800; }
.gn-add-more-pdf span { display: inline-flex; align-items: center; }

/* Image Library grid */
.gn-img-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 12px;
  max-height: 50vh;
  overflow-y: auto;
  padding: 4px;
  margin-bottom: 16px;
}
.gn-img-grid__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  background: var(--bg-soft);
  border-radius: var(--radius);
  border: 1px dashed var(--border-strong);
}
.gn-img-cell {
  position: relative;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  cursor: pointer;
  transition: border-color var(--t-fast), transform var(--t-fast);
}
.gn-img-cell:hover { border-color: var(--brand); transform: translateY(-2px); }
.gn-img-cell img {
  width: 100%;
  height: 90px;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
}
.gn-img-cell__name {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.gn-img-cell__del {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--err);
  color: #fff;
  border: 0;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  transition: opacity var(--t-fast);
}
.gn-img-cell:hover .gn-img-cell__del,
.gn-img-cell:focus-within .gn-img-cell__del { opacity: 1; }
.gn-img-cell__del:hover { background: #8c1d12; }