/* ═══════════════════════════════════════════════
   BARCODE LABEL DESIGNER — Modern Design System
   ═══════════════════════════════════════════════ */

:root {
  /* Light Mode — warm, clean palette */
  --bg-color: #f0f2f5;
  --panel-bg: #ffffff;
  --panel-bg-translucent: rgba(255, 255, 255, 0.85);
  --text-primary: #1a1a2e;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.12);
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --primary-light: rgba(99, 102, 241, 0.08);
  --secondary-color: #f4f4f7;
  --secondary-hover: #e8e8ee;
  --danger-color: #ef4444;
  --danger-hover: #dc2626;
  --success-color: #10b981;
  --canvas-bg: #ffffff;
  --canvas-border: #d1d5db;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1), 0 4px 12px rgba(0, 0, 0, 0.05);
  --modal-overlay: rgba(15, 23, 42, 0.5);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg-color: #0f1117;
  --panel-bg: #1a1d28;
  --panel-bg-translucent: rgba(26, 29, 40, 0.92);
  --text-primary: #e8eaed;
  --text-secondary: #9aa0ad;
  --text-muted: #5c6370;
  --border-color: rgba(255, 255, 255, 0.06);
  --border-strong: rgba(255, 255, 255, 0.1);
  --primary-color: #818cf8;
  --primary-hover: #a5b4fc;
  --primary-light: rgba(129, 140, 248, 0.1);
  --secondary-color: #252836;
  --secondary-hover: #2f3344;
  --danger-color: #f87171;
  --danger-hover: #ef4444;
  --success-color: #34d399;
  --canvas-bg: #ffffff;
  --canvas-border: #374151;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3), 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.25);
  --modal-overlay: rgba(0, 0, 0, 0.6);
}

/* ── Reset & Base ── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  overflow: hidden;
  transition:
    background-color var(--transition-smooth),
    color var(--transition-smooth);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── App Layout ── */
#app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Top Bar ── */
.top-bar {
  height: 52px;
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 16px;
  z-index: 10;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand h1 {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--primary-color), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.top-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* ── Main Content ── */
.main-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar ── */
.sidebar {
  width: 220px;
  background-color: var(--panel-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 16px 12px;
  overflow-y: auto;
  transition: background-color var(--transition-smooth);
}

.right-sidebar {
  border-right: none;
  border-left: 1px solid var(--border-color);
  width: 240px;
}

.sidebar h2 {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* ── Design Area ── */
.design-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-color);
  overflow: hidden;
}

.canvas-container-scroll {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: auto;
  padding: 40px;
  /* Subtle dot grid bg */
  background-image: radial-gradient(
    circle,
    var(--border-color) 1px,
    transparent 1px
  );
  background-size: 20px 20px;
}

/* ── Canvas ── */
.canvas-wrapper {
  box-shadow: var(--shadow-lg);
  border-radius: 2px;
  background-color: var(--canvas-border);
  padding: 1px;
  transition: box-shadow var(--transition-smooth);
}

.canvas-wrapper:hover {
  box-shadow:
    var(--shadow-lg),
    0 0 0 1px var(--primary-color);
}

#design-canvas {
  background-color: #fff;
  position: relative;
  overflow: hidden;
  transform-origin: top left;
  box-sizing: border-box;
}

/* ── Status Bar ── */
.status-bar {
  display: flex;
  justify-content: flex-end;
  padding: 6px 16px;
  background-color: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  z-index: 5;
}

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
}

.zoom-controls input[type="range"] {
  width: 120px;
  cursor: pointer;
  accent-color: var(--primary-color);
  height: 4px;
}

/* ── Grid (1mm) ── */
.show-grid #design-canvas {
  background-image:
    linear-gradient(to right, rgba(0, 0, 0, 0.08) 0.5px, transparent 0.5px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.08) 0.5px, transparent 0.5px);
  background-size: 3.7795px 3.7795px;
}

/* Center Guidelines */
.show-grid #design-canvas::before,
.show-grid #design-canvas::after {
  content: "";
  position: absolute;
  background-color: rgba(99, 102, 241, 0.3);
  pointer-events: none;
  z-index: 100;
}

.show-grid #design-canvas::before {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.show-grid #design-canvas::after {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

/* ═══════════════════════════════
   DESIGNER ELEMENTS
   ═══════════════════════════════ */

.designer-element {
  position: absolute;
  cursor: grab;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: box-shadow var(--transition-fast);
}

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

.designer-element.selected {
  outline: 0.5px dashed rgba(99, 102, 241, 0.5);
}

/* Resize Handles */
.designer-element.selected > .resize-handle {
  position: absolute;
  width: 5px;
  height: 5px;
  background: white;
  border: 1px solid var(--primary-color);
  border-radius: 1px;
  z-index: 10;
  box-shadow: 0 0 3px rgba(99, 102, 241, 0.3);
}

.designer-element.selected .resize-handle.tl {
  top: -3px;
  left: -3px;
  cursor: nwse-resize;
}
.designer-element.selected .resize-handle.tr {
  top: -3px;
  right: -3px;
  cursor: nesw-resize;
}
.designer-element.selected .resize-handle.bl {
  bottom: -3px;
  left: -3px;
  cursor: nesw-resize;
}
.designer-element.selected .resize-handle.br {
  bottom: -3px;
  right: -3px;
  cursor: nwse-resize;
}

/* ═══════════════════════════════
   TOOL BUTTONS
   ═══════════════════════════════ */

.tool-grid {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.tool-btn {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.tool-btn:active {
  transform: scale(0.97);
}

.tool-btn .icon {
  font-size: 0.75rem;
  font-weight: 700;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--secondary-color);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.tool-btn:hover .icon {
  background: var(--primary-color);
  color: white;
}

/* ═══════════════════════════════
   BUTTONS
   ═══════════════════════════════ */

.btn {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  letter-spacing: -0.01em;
}

.btn:active {
  transform: scale(0.97);
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary-color), #7c3aed);
  color: white;
  box-shadow: 0 1px 3px rgba(99, 102, 241, 0.25);
}

.btn.primary:hover {
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.35);
  filter: brightness(1.05);
}

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

.btn.secondary:hover {
  background-color: var(--secondary-hover);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn.danger {
  background: linear-gradient(135deg, var(--danger-color), #dc2626);
  color: white;
  box-shadow: 0 1px 3px rgba(239, 68, 68, 0.2);
}

.btn.danger:hover {
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
  filter: brightness(1.05);
}

.full-width {
  width: 100%;
}

/* ═══════════════════════════════
   THEME SWITCH
   ═══════════════════════════════ */

.theme-switch-wrapper {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 8px;
}

.theme-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
}

.theme-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--border-strong);
  transition: var(--transition-smooth);
  border-radius: 20px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 14px;
  width: 14px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: var(--transition-smooth);
  border-radius: 50%;
  box-shadow: var(--shadow-xs);
}

input:checked + .slider {
  background: linear-gradient(135deg, var(--primary-color), #7c3aed);
}

input:checked + .slider:before {
  transform: translateX(16px);
}

/* ═══════════════════════════════
   MODALS
   ═══════════════════════════════ */

.modal {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--modal-overlay);
  z-index: 100;
  justify-content: center;
  align-items: center;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal.active {
  display: flex;
}

.modal-content {
  background-color: var(--panel-bg);
  padding: 28px;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  animation: modalIn 0.2s ease-out;
  position: relative;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-content.large {
  max-width: 520px;
}

.modal-content h2 {
  margin-bottom: 4px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 0.8rem;
  line-height: 1.5;
}

/* ── Forms ── */
.form-group {
  margin-bottom: 14px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--secondary-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* ── Properties Panel ── */
.properties-panel {
  font-size: 0.8rem;
}

.properties-panel .empty-state {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-align: center;
  padding: 24px 8px;
  line-height: 1.6;
}

.prop-section {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.prop-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.prop-section h3 {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  font-weight: 600;
  margin-bottom: 10px;
}

.prop-section .form-group {
  margin-bottom: 8px;
}

.prop-section .form-group label {
  font-size: 0.7rem;
  margin-bottom: 3px;
}

.prop-section .form-group input,
.prop-section .form-group select {
  padding: 5px 8px;
  font-size: 0.8rem;
}

.prop-section .form-group.row {
  display: flex;
  gap: 6px;
}

.prop-section .form-group.row .col {
  flex: 1;
}

.prop-section .form-group.row .btn {
  flex: 1;
  font-size: 0.7rem;
  padding: 5px 8px;
}

.delete-section {
  padding-top: 8px;
  border-bottom: none;
}

.delete-section .btn {
  font-size: 0.75rem;
  padding: 7px 12px;
}

/* ═══════════════════════════════
   PRINT ZONE
   ═══════════════════════════════ */

#csv-preview-container {
  max-height: 200px;
  overflow-y: auto;
  overflow-x: auto;
  margin-bottom: 15px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  display: none; /* Hidden until data is uploaded */
}

#csv-preview-container table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

#csv-preview-container th,
#csv-preview-container td {
  padding: 6px 10px;
  border: 1px solid var(--border-color);
  text-align: left;
  white-space: nowrap;
}

#csv-preview-container th {
  background-color: var(--secondary-color);
  font-weight: 600;
  position: sticky;
  top: 0;
}

#printZone {
  display: none;
}

@media print {
  @page {
    margin: 0;
  }

  body,
  html {
    background: transparent !important;
    margin: 0 !important;
    padding: 0 !important;
    display: block !important;
    min-height: auto !important;
    overflow: visible !important;
  }

  #app-container {
    display: none !important;
  }

  #printZone {
    display: block !important;
  }

  #printZone .print-label-page,
  #printZone .print-label-row {
    page-break-after: always;
    break-after: page;
    border: none !important;
    box-shadow: none !important;
    background: white !important;
  }
}