/* ==========================================================================
   SignPdfDoc.com - PDF Editor & Signer Stylesheet
   ========================================================================== */

/* Main Signing App Container */
.pdf-app-card {
  background-color: var(--surface-white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
  transition: all 0.2s ease;
}

/* 1. Upload View / Drop Zone */
.upload-zone {
  padding: 4.5rem 2rem;
  text-align: center;
  border: 2px dashed var(--slate-300);
  border-radius: var(--radius-lg);
  margin: 1.5rem;
  background-color: var(--slate-50);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--primary);
  background-color: var(--primary-light);
  transform: scale(1.005);
}

.upload-icon-circle {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-full);
  background-color: #fff;
  border: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  box-shadow: var(--shadow-md);
  margin-bottom: 1.25rem;
  transition: transform 0.2s ease;
}

.upload-zone:hover .upload-icon-circle {
  transform: translateY(-3px);
}

.upload-icon-circle svg {
  width: 36px;
  height: 36px;
}

.upload-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--charcoal-900);
  margin-bottom: 0.5rem;
}

.upload-sub {
  color: var(--charcoal-600);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  max-width: 440px;
}

.upload-privacy-note {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--slate-500);
  margin-top: 1.25rem;
}

.upload-privacy-note svg {
  width: 16px;
  height: 16px;
  color: var(--success);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 10;
}

/* 2. Editor Workspace View */
.editor-workspace {
  display: none;
  flex-direction: column;
  background-color: var(--slate-100);
  min-height: 650px;
}

.editor-workspace.active {
  display: flex;
}

/* Top Toolbar */
.editor-toolbar {
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--slate-200);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  position: sticky;
  top: 72px;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toolbar-divider {
  width: 1px;
  height: 28px;
  background-color: var(--slate-200);
  margin: 0 0.25rem;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background-color: #fff;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--charcoal-800);
  cursor: pointer;
  transition: all 0.15s ease;
  line-height: 1;
}

.tool-btn:hover:not(:disabled) {
  background-color: var(--slate-50);
  border-color: var(--slate-400);
  color: var(--charcoal-900);
}

.tool-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.tool-btn svg {
  width: 16px;
  height: 16px;
}

.tool-btn.btn-accent {
  background-color: var(--primary-light);
  border-color: var(--primary-border);
  color: var(--primary);
}

.tool-btn.btn-accent:hover {
  background-color: #FFCDD2;
}

.page-indicator {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--charcoal-700);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0 0.25rem;
}

.page-input {
  width: 44px;
  text-align: center;
  padding: 0.25rem 0.2rem;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-xs);
  font-weight: 600;
  font-size: 0.875rem;
}

/* Document Stage / Canvas Viewer */
.document-stage {
  flex: 1;
  padding: 2rem 1.5rem;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 520px;
  position: relative;
  background-color: #64748B1A;
}

.page-wrapper {
  position: relative;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
  border-radius: 2px;
  background-color: #FFFFFF;
  margin: 0 auto;
  user-select: none;
  transform-origin: top center;
  transition: transform 0.15s ease-out;
}

.pdf-canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* Interactive Annotation Layer */
.annotation-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.placed-element {
  position: absolute;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
  touch-action: none;
  border: 1.5px dashed transparent;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
}

.placed-element:hover {
  border-color: rgba(211, 47, 47, 0.5);
}

.placed-element.selected {
  border-color: var(--primary);
  background-color: rgba(211, 47, 47, 0.05);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.8);
}

.placed-element:active {
  cursor: grabbing;
}

.placed-element img,
.placed-element canvas {
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}

.placed-text-content {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 600;
  color: #1E293B;
  white-space: nowrap;
  pointer-events: none;
}

/* Resize Handles */
.resize-handle {
  display: none;
  position: absolute;
  width: 12px;
  height: 12px;
  background-color: var(--primary);
  border: 2px solid #FFFFFF;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  z-index: 20;
}

.placed-element.selected .resize-handle {
  display: block;
}

.resize-handle.nw { top: -6px; left: -6px; cursor: nwse-resize; }
.resize-handle.ne { top: -6px; right: -6px; cursor: nesw-resize; }
.resize-handle.se { bottom: -6px; right: -6px; cursor: nwse-resize; }
.resize-handle.sw { bottom: -6px; left: -6px; cursor: nesw-resize; }

/* Element Quick Action Floating Menu */
.element-actions {
  display: none;
  position: absolute;
  top: -38px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--charcoal-900);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.4rem;
  gap: 0.25rem;
  box-shadow: var(--shadow-md);
  z-index: 30;
}

.placed-element.selected .element-actions {
  display: flex;
}

.element-action-btn {
  background: none;
  border: none;
  color: #fff;
  padding: 0.25rem 0.4rem;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease;
}

.element-action-btn:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.element-action-btn.delete-btn:hover {
  background-color: #EF4444;
}

.element-action-btn svg {
  width: 14px;
  height: 14px;
}

/* 3. Signature Creation Modal */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

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

.signature-modal {
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 620px;
  overflow: hidden;
  animation: modalPop 0.2s ease-out;
  display: flex;
  flex-direction: column;
}

@keyframes modalPop {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-size: 1.25rem;
  margin-bottom: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--slate-500);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  border-radius: var(--radius-xs);
}

.modal-close:hover {
  color: var(--charcoal-900);
}

.modal-close svg {
  width: 20px;
  height: 20px;
}

/* Modal Tabs */
.modal-tabs {
  display: flex;
  border-bottom: 1px solid var(--slate-200);
  background-color: var(--slate-50);
}

.tab-btn {
  flex: 1;
  padding: 0.85rem 1rem;
  background: none;
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--charcoal-600);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.tab-btn:hover {
  color: var(--charcoal-900);
  background-color: var(--slate-100);
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background-color: #FFFFFF;
}

.modal-body {
  padding: 1.5rem;
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* Draw Tab */
.draw-canvas-container {
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  background-color: #FFFFFF;
  position: relative;
  height: 220px;
  cursor: crosshair;
  touch-action: none;
}

.draw-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.canvas-guideline {
  position: absolute;
  bottom: 45px;
  left: 20px;
  right: 20px;
  height: 1px;
  border-bottom: 1px dashed var(--slate-300);
  pointer-events: none;
}

.draw-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.color-picker-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.color-dot {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 1px var(--slate-300);
  transition: transform 0.15s ease;
}

.color-dot.active {
  transform: scale(1.15);
  box-shadow: 0 0 0 2px var(--primary);
}

/* Type Tab */
.type-input-group {
  margin-bottom: 1.25rem;
}

.font-preview-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  max-height: 220px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.font-preview-card {
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.15s ease;
}

.font-preview-card:hover {
  border-color: var(--primary-border);
  background-color: var(--slate-50);
}

.font-preview-card.active {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.font-sample-text {
  font-size: 1.75rem;
  line-height: 1.2;
}

/* Upload Tab */
.sig-upload-box {
  border: 2px dashed var(--slate-300);
  border-radius: var(--radius-sm);
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  background-color: var(--slate-50);
  transition: all 0.15s ease;
}

.sig-upload-box:hover {
  border-color: var(--primary);
  background-color: var(--primary-light);
}

.sig-upload-preview {
  max-height: 140px;
  max-width: 100%;
  object-fit: contain;
  margin: 1rem auto 0;
  display: block;
}

/* Modal Footer */
.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--slate-200);
  background-color: var(--slate-50);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Loading Overlay */
.loading-overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(2px);
  z-index: 500;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1rem;
}

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

.spinner {
  width: 44px;
  height: 44px;
  border: 3px solid var(--slate-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-weight: 600;
  color: var(--charcoal-800);
  font-size: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .editor-toolbar {
    padding: 0.5rem 0.75rem;
    gap: 0.4rem;
  }
  
  .document-stage {
    padding: 1rem 0.5rem;
  }

  .upload-zone {
    padding: 3rem 1rem;
    margin: 1rem;
  }
}