/* ============================================
   SiteForge – Builder CSS
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --surface3: #2a2f45;
  --border: #2e3349;
  --border2: #3d4266;
  --accent: #6c63ff;
  --accent2: #9d96ff;
  --accent-glow: rgba(108, 99, 255, 0.3);
  --text: #e2e8f0;
  --text2: #a0abc0;
  --text3: #6b7280;
  --danger: #ef4444;
  --success: #22c55e;
  --warn: #f59e0b;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* ====== SCROLLBARS ====== */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border2);
  border-radius: 99px;
}

/* ====== TOP BAR ====== */
#topbar {
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  margin-right: 12px;
}

.logo i {
  color: var(--accent);
}

.device-btns {
  display: flex;
  gap: 3px;
  background: var(--surface2);
  padding: 3px;
  border-radius: var(--radius-sm);
}

.device-btn {
  width: 36px;
  height: 29px;
  border: none;
  background: transparent;
  color: var(--text2);
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.device-btn:hover {
  background: var(--surface3);
  color: var(--text);
}

.device-btn.active {
  background: var(--accent);
  color: #fff;
}

/* Toolbar Buttons */
.tb-btn {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border2);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  white-space: nowrap;
}

.tb-btn.secondary {
  background: var(--surface2);
  color: var(--text2);
}

.tb-btn.secondary:hover {
  background: var(--surface3);
  color: var(--text);
  border-color: var(--accent);
}

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

.tb-btn.primary:hover {
  background: var(--accent2);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ====== APP LAYOUT ====== */
#app {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ====== LEFT SIDEBAR ====== */
#palette {
  width: 230px;
  flex-shrink: 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.palette-header {
  padding: 14px 12px 8px;
  border-bottom: 1px solid var(--border);
}

.palette-header h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text3);
  margin-bottom: 8px;
}

#paletteSearch {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  color: var(--text);
  font-size: 0.82rem;
  outline: none;
  transition: border 0.2s;
}

#paletteSearch:focus {
  border-color: var(--accent);
}

.palette-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.palette-category {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text3);
  padding: 10px 4px 4px;
}

.palette-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  cursor: grab;
  transition: all 0.2s;
  font-size: 0.84rem;
  color: var(--text2);
  border: 1px solid transparent;
  margin-bottom: 2px;
  user-select: none;
}

.palette-item:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}

.palette-item:active {
  cursor: grabbing;
}

.palette-item.dragging {
  background: var(--surface3);
  border-color: var(--accent);
  color: var(--accent2);
  opacity: 0.7;
}

.palette-item i {
  width: 28px;
  height: 28px;
  background: var(--surface2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--accent);
  flex-shrink: 0;
}

/* ====== CANVAS WRAPPER ====== */
#canvasWrapper {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
  background: #090b10;
  background-image:
    radial-gradient(ellipse at 30% 20%, rgba(108, 99, 255, 0.06) 0%, transparent 60%),
    linear-gradient(rgba(46, 51, 73, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 51, 73, 0.3) 1px, transparent 1px);
  background-size: auto, 40px 40px, 40px 40px;
}

#canvasFrame {
  width: 100%;
  max-width: 1200px;
  transition: max-width 0.3s ease;
  min-height: calc(100vh - 130px);
}

#canvasFrame.tablet {
  max-width: 768px;
}

#canvasFrame.mobile {
  max-width: 390px;
}

#canvas {
  background: #fff;
  min-height: 100%;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 0 0 1px var(--border), var(--shadow);
}

#canvas-empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--text3);
  pointer-events: none;
  transition: opacity 0.3s;
}

#canvas-empty-state i {
  opacity: 0.3;
  color: var(--accent);
}

#canvas-empty-state p {
  text-align: center;
  line-height: 1.6;
  font-size: 0.9rem;
}

#canvas-empty-state.hidden {
  opacity: 0;
}

/* Drop zone indicator for canvas */
#canvas.drag-over {
  outline: 2px dashed var(--accent);
  outline-offset: -2px;
}

.drop-indicator {
  height: 4px;
  background: var(--accent);
  border-radius: 99px;
  margin: 4px 0;
  transition: height 0.15s;
}

/* ====== CANVAS BLOCKS ====== */
.canvas-block {
  position: relative;
  outline: 2px solid transparent;
  transition: outline 0.15s;
  cursor: pointer;
}

.canvas-block:hover {
  outline: 2px solid rgba(108, 99, 255, 0.4);
}

.canvas-block.selected {
  outline: 2px solid var(--accent);
}

.block-toolbar {
  position: absolute;
  top: -38px;
  left: 0;
  display: none;
  align-items: center;
  gap: 2px;
  background: var(--accent);
  border-radius: 6px 6px 0 0;
  padding: 3px 6px;
  z-index: 99;
  font-size: 0.75rem;
  color: #fff;
  white-space: nowrap;
  pointer-events: none;
}

.canvas-block.selected .block-toolbar {
  display: flex;
}

.block-actions {
  position: absolute;
  top: 6px;
  right: 6px;
  display: none;
  gap: 4px;
  z-index: 100;
}

.canvas-block.selected .block-actions {
  display: flex;
}

.block-action-btn {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: 0.2s;
}

.block-action-btn.drag-handle {
  background: var(--accent);
  color: #fff;
  cursor: grab;
}

.block-action-btn.move-up,
.block-action-btn.move-down {
  background: var(--surface2);
  color: var(--text2);
}

.block-action-btn.move-up:hover,
.block-action-btn.move-down:hover {
  background: var(--accent);
  color: #fff;
}

.block-action-btn.dup-btn {
  background: var(--surface2);
  color: var(--text2);
}

.block-action-btn.dup-btn:hover {
  background: var(--success);
  color: #fff;
}

.block-action-btn.del-btn {
  background: var(--surface2);
  color: var(--text2);
}

.block-action-btn.del-btn:hover {
  background: var(--danger);
  color: #fff;
}

/* Resize Handles */
.resize-handle {
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 8px;
  background: var(--accent);
  border-radius: 4px;
  cursor: ns-resize;
  display: none;
  z-index: 101;
  transition: width 0.2s, height 0.2s;
}

.canvas-block.selected .resize-handle {
  display: block;
}

.resize-handle:hover {
  width: 60px;
  height: 10px;
}

canvas.resizing {
  cursor: ns-resize !important;
}

/* ====== FLEX CONTAINER BLOCK ====== */
.sf-container-block {
  min-height: 100px;
  position: relative;
}

.container-inner {
  transition: all 0.2s;
  min-height: 100px;
}

.sf-drop-hint {
  border: 2px dashed var(--border2);
  border-radius: 8px;
  padding: 40px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  font-size: 0.85rem;
  transition: all 0.2s;
  background: rgba(0,0,0,0.02);
  min-height: 120px;
  width: 100%;
}

.container-inner:hover .sf-drop-hint,
.container-inner.drag-over .sf-drop-hint {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(108, 99, 255, 0.08);
}

/* ====== RIGHT PANEL ====== */
#propPanel {
  width: 280px;
  flex-shrink: 0;
  background: var(--surface);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#propPanelContent {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.prop-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text3);
  gap: 12px;
  text-align: center;
  padding: 40px 20px;
}

.prop-empty i {
  font-size: 2rem;
  opacity: 0.4;
}

.prop-empty p {
  font-size: 0.85rem;
  line-height: 1.6;
}

.prop-section {
  margin-bottom: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.prop-section:last-child {
  border-bottom: none;
}

.prop-section h4 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text3);
  margin-bottom: 10px;
}

.form-group {
  margin-bottom: 10px;
}

.form-group label {
  display: block;
  font-size: 0.78rem;
  color: var(--text2);
  margin-bottom: 4px;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  color: var(--text);
  font-size: 0.82rem;
  outline: none;
  font-family: inherit;
  transition: border 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}

.divider-text {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 20px 0;
  color: var(--text3);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border);
}

.divider-text::before {
  margin-right: 15px;
}

.divider-text::after {
  margin-left: 15px;
}

/* Sidebar & Property Tabs (Shared) */
.sidebar-tabs, .prop-tabs {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 5px;
}

.sidebar-tabs .tab-btn, .prop-tabs .tab-btn {
  flex: 1;
  border: none;
  background: none;
  padding: 12px 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-tabs .tab-btn.active, .prop-tabs .tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.sidebar-tabs .tab-btn:hover:not(.active), .prop-tabs .tab-btn:hover:not(.active) {
  color: var(--text1);
}

.tab-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tab-panel.hidden {
  display: none;
}

/* Property Panel Specifics */
.prop-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  background: var(--bg1);
  border-bottom: 1px solid var(--border);
}

.prop-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text1);
}

.prop-title i {
  color: var(--accent);
}

.prop-tabs {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}

.prop-tabs .tab-btn {
  flex: 1;
  border: none;
  background: none;
  padding: 10px 5px;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  text-transform: uppercase;
}

.prop-tabs .tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.prop-body {
  padding: 15px;
  flex: 1;
  overflow-y: auto;
}

/* Layers Panel */
.layers-header {
  padding: 15px;
  border-bottom: 1px solid var(--border);
  background: var(--bg1);
}

.layers-header p {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text3);
  letter-spacing: 0.05em;
}

.layers-list {
  padding: 10px 0;
  flex: 1;
  overflow-y: auto;
}

.layer-item {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  font-size: 0.8rem;
  color: var(--text2);
  cursor: pointer;
  transition: all 0.1s;
  user-select: none;
}

.layer-item:hover {
  background: var(--bg2);
  color: var(--text1);
}

.layer-item.selected {
  background: rgba(108, 99, 255, 0.1);
  color: var(--accent);
  border-left: 3px solid var(--accent);
  padding-left: 12px;
}

.layer-item i {
  width: 20px;
  font-size: 0.85rem;
  margin-right: 8px;
  opacity: 0.7;
}

.layer-indent {
  width: 15px;
  flex-shrink: 0;
}

/* History & Dividers */
.v-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 15px;
}

.history-btns {
  display: flex;
  gap: 5px;
}

.form-group textarea {
  resize: vertical;
}

.form-group input[type="color"] {
  width: 100%;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  cursor: pointer;
  padding: 2px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.form-tabs {
  display: flex;
  gap: 3px;
  margin-bottom: 10px;
}

.form-tab {
  flex: 1;
  padding: 5px;
  font-size: 0.75rem;
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text2);
  transition: 0.2s;
}

.form-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.repeater-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  margin-bottom: 6px;
}

.repeater-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text2);
}

.repeater-item-header .rm-btn {
  background: transparent;
  border: none;
  color: var(--danger);
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 4px;
}

.repeater-item-body {
  margin-top: 8px;
}

.add-item-btn {
  width: 100%;
  padding: 7px;
  border: 1px dashed var(--border2);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text3);
  font-size: 0.8rem;
  cursor: pointer;
  transition: 0.2s;
}

.add-item-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
}

/* ====== MODALS ====== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  width: 550px;
  max-width: 95vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

.modal.modal-xl {
  width: 95vw;
  height: 90vh;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-header h2 {
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-header h2 i {
  color: var(--accent);
}

.modal-close {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
  transition: color 0.2s;
}

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

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

.modal-body.p0 {
  padding: 0;
}

.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  flex-shrink: 0;
}

.info-text {
  font-size: 0.85rem;
  color: var(--text2);
  margin-bottom: 14px;
  line-height: 1.6;
}

#previewFrame {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}

/* ====== CONTEXT MENU ====== */
#contextMenu {
  position: fixed;
  z-index: 2000;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  min-width: 155px;
  padding: 4px 0;
}

#contextMenu.hidden {
  display: none;
}

#contextMenu ul {
  list-style: none;
}

#contextMenu li {
  padding: 8px 14px;
  font-size: 0.82rem;
  cursor: pointer;
  color: var(--text2);
  display: flex;
  align-items: center;
  gap: 9px;
  transition: 0.15s;
}

#contextMenu li:hover {
  background: var(--surface3);
  color: var(--text);
}

#contextMenu li.danger {
  color: var(--danger);
}

#contextMenu li.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

#contextMenu .divider {
  height: 1px;
  background: var(--border);
  padding: 0;
  margin: 3px 0;
}

/* ====== NOTIFICATION ====== */
#toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  padding: 10px 20px;
  font-size: 0.85rem;
  color: var(--text);
  z-index: 3000;
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  pointer-events: none;
}

#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

#toast.success {
  border-color: var(--success);
  color: var(--success);
}

#toast.error {
  border-color: var(--danger);
  color: var(--danger);
}

/* ============================================================
   Visual Structure View
   ============================================================ */
.structure-view #canvas div,
.structure-view #canvas section,
.structure-view #canvas nav,
.structure-view #canvas footer,
.structure-view #canvas header,
.structure-view #canvas p,
.structure-view #canvas h1,
.structure-view #canvas h2,
.structure-view #canvas h3,
.structure-view #canvas span,
.structure-view #canvas a,
.structure-view #canvas img,
.structure-view #canvas figure {
    outline: 1px solid #10b981 !important;
    outline-offset: -1px;
}

.structure-view .block-actions,
.structure-view .block-toolbar,
.structure-view .resizer {
    outline: none !important;
}

.sf-sub-selected {
    outline: 2px dashed #3b82f6 !important;
    outline-offset: -2px;
}

.sf-pen-tool:hover {
    background: #2563eb !important;
    transform: scale(1.1);
}