/* Reset และ Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: 'Sarabun', sans-serif;
  background: #f8f9fa;
  color: #2c3e50;
  overflow-x: hidden;
}
/* App Layout */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}
/* Header */
.app-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}
.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
}
.header-content h1 {
  font-size: 1.5rem;
  font-weight: 600;
}
.header-content h1 i {
  margin-right: 0.5rem;
  color: #ffd700;
}
.header-actions {
  display: flex;
  gap: 1rem;
}
/* Mode Buttons */
.mode-buttons {
  display: flex;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 0.25rem;
  backdrop-filter: blur(10px);
}
.mode-btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
}
.mode-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}
.mode-btn.active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}
.mode-btn i {
  font-size: 0.8rem;
}
/* Edit Mode Indicator */
.edit-mode-indicator {
  position: fixed;
  top: 20px;
  right: 20px;
  background: #e74c3c;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
  z-index: 9999;
  display: none;
  align-items: center;
  gap: 0.5rem;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.edit-mode-indicator.active {
  display: flex;
  animation: slideInRight 0.3s ease;
}
.edit-mode-indicator i {
  font-size: 0.8rem;
  animation: pulse 2s infinite;
}
@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}
/* Buttons */
.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}
.btn-primary {
  background: #3498db;
  color: white;
}
.btn-secondary {
  background: #95a5a6;
  color: white;
}
.btn-success {
  background: #27ae60;
  color: white;
}
.btn-warning {
  background: #f39c12;
  color: white;
}
/* App Body */
.app-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}
/* Sidebar */
.sidebar {
  width: 280px;
  background: white;
  border-right: 1px solid #e9ecef;
  overflow-y: auto;
  padding: 1.5rem;
}
.sidebar-section {
  margin-bottom: 2rem;
}
.sidebar-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
/* Template Grid */
.template-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.template-card {
  background: #f8f9fa;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  padding: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}
.template-card:hover {
  border-color: #3498db;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(52, 152, 219, 0.15);
}
.template-card.active {
  border-color: #3498db;
  background: #e3f2fd;
}
.template-preview {
  font-size: 2rem;
  color: #3498db;
  margin-bottom: 0.5rem;
}
.template-card h4 {
  font-size: 0.9rem;
  font-weight: 500;
  color: #2c3e50;
}
/* Form Elements */
.form-group {
  margin-bottom: 1rem;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.9rem;
}
.form-group input[type="color"] {
  height: 40px;
  padding: 0.25rem;
}
/* Tool Buttons */
.tool-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.tool-btn {
  background: #ecf0f1;
  border: 1px solid #bdc3c7;
  border-radius: 6px;
  padding: 0.75rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.tool-btn:hover {
  background: #d5dbdb;
  border-color: #95a5a6;
}
/* Editor Container */
.editor-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: #f8f9fa;
  overflow: hidden;
}
/* Editor Toolbar */
.editor-toolbar {
  background: white;
  border-bottom: 1px solid #e9ecef;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.toolbar-btn {
  background: none;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.toolbar-btn:hover {
  background: #f8f9fa;
  border-color: #3498db;
}
.toolbar-btn[title] {
  position: relative;
}
.toolbar-btn[title]:hover::after {
  content: attr(title);
  position: absolute;
  bottom: 120%;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  z-index: 1000;
}
.zoom-level {
  font-size: 0.9rem;
  font-weight: 500;
  min-width: 50px;
  text-align: center;
}
/* VAT Selector */
.vat-selector {
  padding: 0.4rem 0.6rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.8rem;
  background: white;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 120px;
}
.vat-selector:hover {
  border-color: #3498db;
}
.vat-selector:focus {
  outline: none;
  border-color: #3498db;
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}
/* Receipt Editor */
.receipt-editor {
  flex: 1;
  overflow: auto;
  padding: 2rem;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}
/* A4 Page */
.receipt-page {
  background: white;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  position: relative;
  min-height: 100%;
}
.receipt-page.a4 {
  width: 21cm;
  min-height: 29.7cm;
  padding: 1cm;
}
/* Welcome Message */
.welcome-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 25.7cm;
  color: #95a5a6;
  text-align: center;
}
.welcome-message i {
  font-size: 3rem;
  margin-bottom: 1rem;
}
.welcome-message p {
  font-size: 1.1rem;
}
/* Receipt Templates */
.receipt-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #3498db;
}
.company-info {
  flex: 1;
}
.company-info h1 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}
.company-info p {
  color: #7f8c8d;
  line-height: 1.4;
  margin-bottom: 0.25rem;
}
.company-logo {
  max-width: 120px;
  max-height: 80px;
  margin-bottom: 1rem;
  object-fit: contain;
}
.receipt-info {
  min-width: 200px;
}
.receipt-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: #3498db;
  margin-bottom: 1rem;
  text-align: right;
}
.receipt-details {
  background: #f8f9fa;
  padding: 1rem;
  border-radius: 6px;
}
.receipt-details .detail-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.receipt-details .detail-row:last-child {
  margin-bottom: 0;
}
.customer-section {
  margin-bottom: 2rem;
}
.customer-section h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #2c3e50;
  margin-bottom: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid #e9ecef;
}
.items-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 2rem;
}
.items-table th {
  background: #3498db;
  color: white;
  padding: 0.75rem;
  text-align: left;
  font-weight: 600;
}
.items-table td {
  padding: 0.75rem;
  border-bottom: 1px solid #e9ecef;
}
.items-table tr:nth-child(even) {
  background: #f8f9fa;
}
.total-section {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 2rem;
}
.total-box {
  background: #2c3e50;
  color: white;
  padding: 1.5rem;
  border-radius: 6px;
  min-width: 250px;
}
.total-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.total-row:last-child {
  margin-bottom: 0;
  font-size: 1.2rem;
  font-weight: 700;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  padding-top: 0.75rem;
  margin-top: 0.75rem;
}
.footer-section {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #e9ecef;
  color: #7f8c8d;
}
/* Editable Elements */
.editable {
  position: relative;
  cursor: text;
  transition: all 0.3s ease;
  min-height: 1em;
}
.editable:hover,
.editable.selected,
.editable:focus {
  outline: 1px dashed #3498db;
  border-radius: 3px;
}
/* Inline Format Toolbar */
.format-toolbar {
  position: fixed;
  top: 0;
  left: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: 8px;
  padding: 8px 12px;
  z-index: 10000;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  transition: all 0.2s ease;
  width: auto;
  max-width: none;
  display: none;
}
.format-toolbar.show {
  display: flex;
}
.toolbar-content {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
}
.toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.toolbar-group:not(:last-child)::after {
  content: '';
  width: 1px;
  height: 20px;
  background: #dee2e6;
  margin: 0 8px;
}
/* Item Actions */
.item-actions {
  text-align: center;
}
.item-actions button {
  border: none;
  background-color: transparent;
  cursor: pointer;
}
.item-actions button:hover {
  color: #FF0000;
}
.add-item-row {
  background: #f8f9fa;
  cursor: pointer;
  transition: all 0.3s ease;
}
.add-item-row:hover {
  background: #e9ecef;
}
.add-item-row td {
  text-align: center;
  color: #6c757d;
  font-style: italic;
}
/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}
.modal.show {
  display: flex;
}
.modal-content {
  background: white;
  border-radius: 8px;
  max-width: 500px;
  width: 90%;
  max-height: 80%;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}
.modal-header {
  background: #f8f9fa;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #e9ecef;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: #2c3e50;
}
.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #6c757d;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s ease;
}
.modal-close:hover {
  background: #e9ecef;
  color: #495057;
}
.modal-body {
  padding: 1.5rem;
}
/* Upload Area */
.upload-area {
  border: 2px dashed #dee2e6;
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: #f8f9fa;
}
.upload-area:hover {
  border-color: #667eea;
  background: #f0f8ff;
}
.upload-area i {
  font-size: 3rem;
  color: #6c757d;
  margin-bottom: 1rem;
}
.upload-area p {
  color: #6c757d;
  margin: 0;
  font-size: 1rem;
}
/* Reset Company Data Button */
.btn-outline {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.3);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-1px);
}
/* Responsive Design */
@media (max-width: 1200px) {
  .receipt-page.a4 {
    width: 95%;
    min-height: auto;
  }
}
@media (max-width: 768px) {
  .app-body {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    max-height: 300px;
  }
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }
  .header-actions {
    flex-wrap: wrap;
    justify-content: center;
  }
  .receipt-info {
    text-align: left;
  }
}
/* Print Styles */
@media print {
  .sidebar,
  .app-header,
  .editor-toolbar,
  .format-toolbar,
  .item-actions,
  .add-item-row,
  .edit-mode-indicator {
    display: none !important;
  }
  body,
  .receipt-editor,
  .receipt-page.a4 {
    box-shadow: none;
    border-radius: 0;
    margin: 0;
    padding: 0;
    background: white;
  }
}