/* UI Builder Styles */

:root {
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --secondary-color: #6b7280;
  --danger-color: #ef4444;
  --success-color: #10b981;
  --border-color: #e5e7eb;
  --bg-light: #f9fafb;
  --text-dark: #1f2937;
  --text-light: #6b7280;
}

* {
  box-sizing: border-box;
}

/* Builder Layout */
.builder-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: #fff;
  min-width: 1600px;
}

/* Top Bar */
.builder-topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 70px;
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  z-index: 1000;
  min-width: 1600px;
}

.builder-topbar-left,
.builder-topbar-center,
.builder-topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.builder-topbar h1 {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
  color: var(--text-dark);
}

/* Main Content Area */
.builder-main {
  display: flex;
  margin-top: 60px;
  height: calc(100vh - 60px);
}

/* Blocks Palette (Left Sidebar) */
.blocks-palette {
  width: 300px;
  background: var(--bg-light);
  border-right: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 20px;
}

.blocks-palette-header {
  margin-bottom: 20px;
}

.blocks-palette-header h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 10px 0;
  color: var(--text-dark);
}

.blocks-search {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
}

.blocks-category {
  margin-bottom: 30px;
}

.blocks-category-title {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-light);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.blocks-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.block-item {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 15px;
  text-align: center;
  cursor: move;
  transition: all 0.2s;
}

.block-item:hover {
  border-color: var(--primary-color);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.block-item-icon {
  font-size: 24px;
  margin-bottom: 8px;
}

.block-item-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dark);
}

/* Canvas (Center) */
.builder-canvas {
  flex: 1;
  overflow-y: auto;
  padding: 30px;
  background: #f3f4f6;
}

.canvas-viewport {
  max-width: 100%;
  margin: 0 auto;
  background: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  min-height: 600px;
  transition: all 0.3s;
}

.canvas-viewport.desktop {
  width: 100%;
  max-width: 1400px;
}

.canvas-viewport.tablet {
  width: 768px;
}

.canvas-viewport.mobile {
  width: 390px;
}

/* Canvas Structure */
.canvas-row {
  border: 2px dashed transparent;
  padding: 10px;
  min-height: 80px;
  transition: border-color 0.2s;
  position: relative;
}

.canvas-row:hover {
  border-color: var(--border-color);
}

.canvas-row.selected {
  border-color: var(--primary-color);
  background: rgba(59, 130, 246, 0.05);
}

.canvas-row-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.canvas-column {
  border: 1px dashed var(--border-color);
  padding: 15px;
  min-height: 100px;
  transition: all 0.2s;
  position: relative;
}

.canvas-column:hover {
  border-color: var(--primary-color);
  background: rgba(59, 130, 246, 0.02);
}

.canvas-column.selected {
  border-color: var(--primary-color);
  border-width: 2px;
  background: rgba(59, 130, 246, 0.05);
}

.canvas-element {
  border: 1px solid transparent;
  padding: 10px;
  margin-bottom: 10px;
  border-radius: 4px;
  position: relative;
  cursor: pointer;
  transition: all 0.2s;
}

.canvas-element:hover {
  border-color: var(--border-color);
  background: rgba(0, 0, 0, 0.02);
}

.canvas-element.selected {
  border-color: var(--primary-color);
  background: rgba(59, 130, 246, 0.05);
}

.element-toolbar {
  position: absolute;
  top: -30px;
  right: 0;
  display: none;
  gap: 4px;
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.canvas-element:hover .element-toolbar,
.canvas-element.selected .element-toolbar,
.canvas-row:hover .element-toolbar,
.canvas-row.selected .element-toolbar {
  display: flex;
}

.element-toolbar button {
  padding: 4px 8px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  border-radius: 4px;
}

.element-toolbar button:hover {
  background: var(--bg-light);
}

/* Settings Panel (Right Sidebar) */
.settings-panel {
  width: 350px;
  background: #fff;
  border-left: 1px solid var(--border-color);
  overflow-y: auto;
  padding: 20px;
}

.settings-panel-header {
  margin-bottom: 20px;
}

.settings-panel-header h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 5px 0;
  color: var(--text-dark);
}

.settings-panel-type {
  font-size: 12px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.settings-tabs {
  display: flex;
  gap: 5px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.settings-tab {
  padding: 10px 15px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.settings-tab.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dark);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-color-input {
  display: flex;
  gap: 10px;
  align-items: center;
}

.form-color-input input[type="color"] {
  width: 50px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  cursor: pointer;
}

.form-color-input input[type="text"] {
  flex: 1;
}

.form-image-upload {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.image-preview {
  width: 100%;
  height: 150px;
  border: 1px dashed var(--border-color);
  border-radius: 6px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-light);
}

.image-preview img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.image-preview-placeholder {
  color: var(--text-light);
  font-size: 14px;
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: var(--primary-color);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-secondary {
  background: var(--secondary-color);
  color: #fff;
}

.btn-secondary:hover {
  background: #4b5563;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-dark);
}

.btn-outline:hover {
  background: var(--bg-light);
}

.btn-success {
  background: var(--success-color);
  color: #fff;
}

.btn-success:hover {
  background: #059669;
}

.btn-danger {
  background: var(--danger-color);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Responsive Mode Buttons */
.responsive-modes {
  display: flex;
  gap: 5px;
  background: var(--bg-light);
  padding: 4px;
  border-radius: 6px;
}

.mode-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
  color: var(--text-dark);
  transition: all 0.2s;
}

.mode-btn.active {
  background: #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Empty States */
.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-light);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 20px;
  opacity: 0.5;
}

.empty-state-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.empty-state-text {
  font-size: 14px;
  margin-bottom: 20px;
}

/* Drag & Drop States */
.sortable-ghost {
  opacity: 0.5;
}

.sortable-drag {
  opacity: 0.8;
  transform: rotate(5deg);
}

.drop-zone-active {
  border-color: var(--primary-color);
  background: rgba(59, 130, 246, 0.1);
}

/* Loading */
.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
}

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

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--secondary-color);
}

/* Responsive */
@media (max-width: 1200px) {
  .blocks-palette {
    width: 280px;
  }
  
  .settings-panel {
    width: 300px;
  }
}

@media (max-width: 768px) {
  .blocks-palette,
  .settings-panel {
    position: fixed;
    top: 60px;
    bottom: 0;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s;
  }
  
  .blocks-palette.open,
  .settings-panel.open {
    transform: translateX(0);
  }
  
  .settings-panel {
    right: 0;
    left: auto;
    transform: translateX(100%);
  }
}