/**
 * Photo Joiner - GreenGetWare Theme
 */

:root {
  --primary: #39d353;
  --primary-dark: #176f3c;
  --primary-hover: #2fb344;
  --primary-light: rgba(57, 211, 83, 0.15);
  --primary-gradient: linear-gradient(135deg, #39d353 0%, #176f3c 100%);
  --accent: #00c9ff;
  --secondary: #64748b;
  --success: #39d353;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #252540;
  --bg-card: rgba(26, 26, 46, 0.95);
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.08);
  
  --sidebar-width: 260px;
  
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 60px rgba(57, 211, 83, 0.2);
  
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

[data-theme="light"] {
  --bg-primary: #f1f5f9;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e2e8f0;
  --bg-card: rgba(255, 255, 255, 0.95);
  --text-primary: #1a1a2e;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border-color: rgba(0, 0, 0, 0.08);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Header */
.app-header {
  background: var(--bg-card);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--space-sm) var(--space-md);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 56px;
}

.brand-section {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo i {
  color: var(--primary);
  font-size: 1.5rem;
}

.brand-badge {
  font-size: 0.625rem;
  color: var(--text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  gap: var(--space-xs);
}

.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon:hover:not(:disabled) {
  background: var(--primary);
  color: white;
}

.btn-icon:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-home {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--primary-gradient);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-home:hover {
  transform: translateY(-1px);
  color: white;
}

.btn-home span {
  display: none;
}

@media (min-width: 768px) {
  .btn-home span {
    display: inline;
  }
}

/* Main Content */
.main-content {
  padding-top: 56px;
  min-height: calc(100vh - 56px);
  display: flex;
  flex-direction: column;
}

/* App Layout */
.app-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* Sidebars */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

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

.sidebar-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.sidebar-header h3 i {
  color: var(--primary);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-md);
}

/* Template Category */
.template-category {
  margin-bottom: var(--space-md);
}

.category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm);
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background var(--transition-fast);
}

.category-header:hover {
  background: var(--bg-secondary);
}

.category-header i {
  transition: transform var(--transition-fast);
}

.category-content {
  display: none;
  padding-top: var(--space-sm);
}

.category-content.active {
  display: block;
}

.category-header.collapsed i {
  transform: rotate(-90deg);
}

/* Template Grid */
.template-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-sm);
}

.template-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm);
  background: var(--bg-secondary);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.template-item:hover {
  border-color: var(--primary);
}

.template-item.active {
  border-color: var(--primary);
  background: var(--primary-light);
}

.template-item span {
  font-size: 0.625rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
}

.template-preview {
  width: 50px;
  height: 50px;
  display: grid;
  gap: 2px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  padding: 2px;
}

.template-preview div {
  background: var(--text-muted);
  border-radius: 2px;
}

/* Grid Templates */
.template-preview.grid-2x1 { grid-template-columns: 1fr 1fr; }
.template-preview.grid-1x2 { grid-template-rows: 1fr 1fr; }
.template-preview.grid-2x2 { grid-template: repeat(2, 1fr) / repeat(2, 1fr); }
.template-preview.grid-3x1 { grid-template-columns: repeat(3, 1fr); }
.template-preview.grid-1x3 { grid-template-rows: repeat(3, 1fr); }
.template-preview.grid-3x3 { grid-template: repeat(3, 1fr) / repeat(3, 1fr); }
.template-preview.grid-4x4 { grid-template: repeat(4, 1fr) / repeat(4, 1fr); }
.template-preview.grid-2x3 { grid-template: repeat(3, 1fr) / repeat(2, 1fr); }

/* Creative Templates */
.template-preview.layout-1-2 {
  grid-template: 1fr 1fr / 1fr 1fr;
}
.template-preview.layout-1-2 .big {
  grid-row: 1 / 3;
}

.template-preview.layout-2-1 {
  grid-template: 1fr 1fr / 1fr 1fr;
}
.template-preview.layout-2-1 .big {
  grid-row: 1 / 3;
  grid-column: 2;
}

.template-preview.layout-1-3 {
  grid-template: 1fr 1fr / 1fr 1fr 1fr;
}
.template-preview.layout-1-3 .big {
  grid-row: 1 / 3;
}

.template-preview.layout-center {
  grid-template: 1fr 2fr 1fr / 1fr 2fr 1fr;
}
.template-preview.layout-center .center {
  grid-row: 2;
  grid-column: 2;
}

.template-preview.layout-pinterest {
  grid-template: 1fr 1fr / 1fr 1fr;
}
.template-preview.layout-pinterest .tall {
  grid-row: 1 / 3;
}

.template-preview.layout-diagonal {
  grid-template: repeat(3, 1fr) / repeat(3, 1fr);
}
.template-preview.layout-diagonal div:nth-child(1) { grid-area: 1 / 1 / 2 / 2; }
.template-preview.layout-diagonal div:nth-child(2) { grid-area: 2 / 2 / 3 / 3; }
.template-preview.layout-diagonal div:nth-child(3) { grid-area: 3 / 3 / 4 / 4; }

/* Social Media Templates */
.template-preview.ig-story {
  width: 35px;
  height: 60px;
  grid-template-rows: repeat(3, 1fr);
}

.template-preview.ig-post {
  grid-template: repeat(2, 1fr) / repeat(2, 1fr);
}

.template-preview.fb-cover {
  width: 60px;
  height: 30px;
  grid-template-columns: repeat(3, 1fr);
}

.template-preview.twitter {
  width: 60px;
  height: 30px;
  grid-template-columns: repeat(2, 1fr);
}

/* Frame Templates */
.template-preview.frame-polaroid {
  background: white;
  padding: 3px 3px 10px 3px;
}

.template-preview.frame-film {
  background: #1a1a1a;
  padding: 4px 2px;
  grid-template-columns: repeat(3, 1fr);
}

.template-preview.frame-heart div {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--danger);
  font-size: 24px;
}

.template-preview.frame-circle div {
  border-radius: 50%;
}

/* Canvas Area */
.canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  overflow: hidden;
}

.canvas-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
}

.toolbar-left,
.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.canvas-size-control {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.8125rem;
}

.canvas-size-control label {
  color: var(--text-muted);
}

.canvas-size-control select,
.canvas-size-control input {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8125rem;
}

.canvas-size-control input {
  width: 60px;
  text-align: center;
}

.toolbar-btn {
  width: 32px;
  height: 32px;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

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

.zoom-level {
  font-size: 0.75rem;
  color: var(--text-muted);
  min-width: 40px;
  text-align: center;
}

/* Canvas Container */
.canvas-container {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  background: 
    linear-gradient(45deg, var(--bg-tertiary) 25%, transparent 25%),
    linear-gradient(-45deg, var(--bg-tertiary) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--bg-tertiary) 75%),
    linear-gradient(-45deg, transparent 75%, var(--bg-tertiary) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.canvas-wrapper {
  transform-origin: center center;
  transition: transform var(--transition-fast);
}

.collage-canvas {
  position: relative;
  background: white;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Collage Cell */
.collage-cell {
  position: absolute;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  cursor: pointer;
  transition: box-shadow var(--transition-fast);
}

.collage-cell:hover {
  z-index: 10;
}

.collage-cell.empty {
  border: 2px dashed var(--border-color);
}

.collage-cell.empty::after {
  content: '+';
  font-size: 2rem;
  color: var(--text-muted);
}

.collage-cell img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.collage-cell.selected {
  outline: 3px solid var(--primary);
  outline-offset: -3px;
}

.cell-controls {
  position: absolute;
  top: 4px;
  right: 4px;
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.collage-cell:hover .cell-controls {
  opacity: 1;
}

.cell-btn {
  width: 24px;
  height: 24px;
  background: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 4px;
  color: white;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

/* Canvas Actions */
.canvas-actions {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.action-btn.primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 15px rgba(57, 211, 83, 0.3);
}

.action-btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(57, 211, 83, 0.4);
}

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

.action-btn.secondary:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Settings Sections */
.settings-section {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-color);
}

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

.settings-section h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.settings-section h4 i {
  color: var(--primary);
}

.setting-group {
  margin-bottom: var(--space-md);
}

.setting-group:last-child {
  margin-bottom: 0;
}

.setting-group label {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.setting-group select {
  width: 100%;
  padding: var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8125rem;
}

/* Background Type Tabs */
.bg-type-tabs {
  display: flex;
  gap: var(--space-xs);
}

.bg-tab {
  flex: 1;
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.bg-tab:hover {
  border-color: var(--primary);
}

.bg-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* Color Picker */
.color-picker-wrapper {
  display: flex;
  gap: var(--space-sm);
}

.color-picker-wrapper input[type="color"] {
  width: 40px;
  height: 32px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}

.color-picker-wrapper input[type="text"] {
  flex: 1;
  padding: var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.8125rem;
  font-family: monospace;
}

/* Gradient Controls */
.gradient-controls {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
}

.gradient-controls input[type="color"] {
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}

.gradient-controls select {
  flex: 1;
}

/* Upload Button */
.upload-bg-btn {
  width: 100%;
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
}

.upload-bg-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* Slider Control */
.slider-control {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.slider-control input[type="range"] {
  flex: 1;
  height: 4px;
  background: var(--bg-tertiary);
  border-radius: 2px;
  -webkit-appearance: none;
  appearance: none;
}

.slider-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
}

.slider-value {
  font-size: 0.75rem;
  color: var(--primary);
  min-width: 35px;
  text-align: right;
}

/* Filter Presets */
.filter-presets {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xs);
}

.filter-btn {
  padding: var(--space-xs) var(--space-sm);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.6875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

/* Photos Panel */
.photos-panel {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  max-height: 160px;
}

.photos-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-color);
}

.photos-header h4 {
  font-size: 0.875rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.photos-header h4 i {
  color: var(--primary);
}

.photo-count {
  color: var(--text-muted);
  font-weight: 400;
}

.add-photos-btn {
  padding: var(--space-xs) var(--space-md);
  background: var(--primary-gradient);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.photos-grid {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  overflow-x: auto;
  min-height: 100px;
}

.photos-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.photos-empty i {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.photo-thumb {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  cursor: grab;
  position: relative;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.photo-thumb:hover {
  border-color: var(--primary);
}

.photo-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-thumb .remove-photo {
  position: absolute;
  top: 2px;
  right: 2px;
  width: 18px;
  height: 18px;
  background: rgba(239, 68, 68, 0.9);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 10px;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.photo-thumb:hover .remove-photo {
  opacity: 1;
}

/* Features Section */
.features-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-primary);
}

.features-section h2 {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-md);
}

.feature-icon i {
  font-size: 1.75rem;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Footer */
.app-footer {
  padding: var(--space-xl) 0;
  text-align: center;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
}

.app-footer p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1200px) {
  .settings-sidebar {
    display: none;
  }
}

@media (max-width: 900px) {
  .templates-sidebar {
    display: none;
  }
  
  .app-layout {
    flex-direction: column;
  }
}

@media (max-width: 600px) {
  .canvas-size-control select,
  .canvas-size-control input {
    display: none;
  }
  
  .canvas-actions {
    flex-wrap: wrap;
  }
  
  .action-btn {
    flex: 1;
    min-width: 120px;
    justify-content: center;
  }
}