/* Main Styles - Dark Theme Photo Editor */

/* CSS Variables - Light Theme (Default) */
:root {
  /* Brand Colors */
  --primary-400: #66A6FF;
  --primary-500: #007AFF;
  --primary-600: #0051A8;
  
  /* Neutral Colors - Light Theme */
  --neutral-50: #F8FAFC;
  --neutral-100: #F1F5F9;
  --neutral-200: #E2E8F0;
  --neutral-300: #CBD5E1;
  --neutral-400: #64748B;
  --neutral-500: #475569;
  --neutral-600: #334155;
  --neutral-700: #1E293B;
  --neutral-800: #0F172A;
  --neutral-900: #020617;
  
  /* Semantic Colors */
  --success: #22C55E;
  --success-light: #BBF7D0;
  --warning: #F97316;
  --warning-light: #FED7AA;
  --error: #EF4444;
  --error-light: #FECACA;
  
  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-overlay: rgba(255, 255, 255, 0.95);
  
  /* Text Colors */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-tertiary: #64748B;
  --text-inverse: #FFFFFF;
  
  /* Border Colors */
  --border-light: #E2E8F0;
  --border-medium: #CBD5E1;
  --border-dark: #94A3B8;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 13px;
  --font-size-lg: 14px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Dark Theme */
[data-theme="dark"] {
  /* Brand Colors */
  --primary-400: #66A6FF;
  --primary-500: #007AFF;
  --primary-600: #409CFF;
  
  /* Neutral Colors - Dark Theme */
  --neutral-50: #F8FAFC;
  --neutral-100: #F1F5F9;
  --neutral-200: #E2E8F0;
  --neutral-300: #CBD5E1;
  --neutral-400: #94A3B8;
  --neutral-500: #64748B;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1E293B;
  --neutral-900: #0F172A;
  
  /* Semantic Colors - Dark Theme */
  --success: #22C55E;
  --success-light: #14532D;
  --warning: #F97316;
  --warning-light: #9A3412;
  --error: #EF4444;
  --error-light: #7F1D1D;
  
  /* Background Colors - Dark Theme */
  --bg-primary: #0F172A;
  --bg-secondary: #1E293B;
  --bg-tertiary: #334155;
  --bg-overlay: rgba(15, 23, 42, 0.95);
  
  /* Text Colors - Dark Theme */
  --text-primary: #F8FAFC;
  --text-secondary: #E2E8F0;
  --text-tertiary: #94A3B8;
  --text-inverse: #0F172A;
  
  /* Border Colors - Dark Theme */
  --border-light: #334155;
  --border-medium: #475569;
  --border-dark: #64748B;
  
  /* Shadows - Dark Theme */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  user-select: none;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Smooth theme transition */
* {
  transition: background-color var(--transition-normal), 
              border-color var(--transition-normal),
              color var(--transition-normal),
              box-shadow var(--transition-normal);

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.4;
}

h1 { font-size: var(--font-size-xl); }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-base); }

p {
  line-height: 1.5;
}

/* Layout Components */
.top-menu {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 48px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  padding: 0 var(--space-lg);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(8px);
  position: relative;
  z-index: 100;
}

.menu-left {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo h1 {
  color: var(--primary-500);
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
  transition: color var(--transition-fast);
}

.logo-icon {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 12px;
}

.menu-items {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Enhanced Menu Items */
.menu-item {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-weight: 500;
  white-space: nowrap;
}

.menu-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.menu-item.active {
  background-color: var(--primary-500);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--bg-primary);
  border-color: var(--primary-400);
  transform: translateY(-1px);
}

.theme-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-normal);
}

.theme-toggle:hover .theme-icon {
  transform: rotate(15deg);
}

/* User Menu */
.user-menu {
  position: relative;
}

.user-button {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-weight: 500;
}

.user-button:hover {
  background-color: var(--bg-primary);
  border-color: var(--primary-400);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.user-avatar {
  width: 24px;
  height: 24px;
  background: linear-gradient(135deg, var(--primary-400), var(--primary-500));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.user-name {
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
  gap: var(--space-lg);
}

.menu-item {
  position: relative;
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.menu-item:hover {
  background-color: var(--neutral-800);
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--neutral-800);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-md);
  min-width: 200px;
  z-index: 1000;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--neutral-700);
}

.dropdown-divider {
  height: 1px;
  background-color: var(--neutral-700);
  margin: var(--space-xs) 0;
}

.shortcut {
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
}

.menu-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.language-selector select {
  background-color: var(--neutral-800);
  color: var(--neutral-400);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

/* Main Content Layout */
.main-content {
  display: flex;
  height: calc(100vh - 68px); /* Subtract top menu and status bar */
}

/* Toolbar */
.toolbar {
  width: 56px;
  background-color: var(--neutral-900);
  border-right: 1px solid var(--neutral-700);
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) 0;
  gap: var(--space-sm);
}

.tool-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.tool-button {
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--neutral-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  position: relative;
}

.tool-button:hover {
  background-color: var(--neutral-800);
}

.tool-button.active {
  background-color: var(--primary-500);
  color: #FFFFFF;
}

.tool-tooltip {
  position: absolute;
  left: 100%;
  margin-left: var(--space-sm);
  background-color: var(--neutral-800);
  color: var(--neutral-400);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 1000;
}

.tool-button:hover .tool-tooltip {
  opacity: 1;
}

/* Canvas Area */
.canvas-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--neutral-950);
  position: relative;
}

.canvas-container {
  position: relative;
  max-width: 100%;
  max-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#mainCanvas {
  border: 1px solid var(--neutral-700);
  background-color: #FFFFFF;
  cursor: crosshair;
  max-width: 100%;
  max-height: 100%;
}

#mainCanvas.zoom-in {
  cursor: zoom-in;
}

#mainCanvas.zoom-out {
  cursor: zoom-out;
}

.canvas-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
}

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

.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 300px;
  height: 200px;
  border: 2px dashed var(--neutral-700);
  border-radius: var(--radius-md);
  color: var(--neutral-500);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.drop-zone:hover {
  border-color: var(--primary-500);
  color: var(--primary-500);
}

.drop-zone.drag-over {
  border-color: var(--primary-500);
  background-color: rgba(0, 122, 255, 0.1);
  color: var(--primary-500);
}

/* Panels */
.panels {
  width: 280px;
  background-color: var(--neutral-900);
  border-left: 1px solid var(--neutral-700);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-md);
  overflow-y: auto;
}

.panel {
  background-color: var(--neutral-800);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  background-color: var(--neutral-700);
  border-bottom: 1px solid var(--neutral-700);
}

.panel-header h3 {
  color: var(--neutral-400);
  font-size: var(--font-size-base);
}

.panel-button {
  width: 24px;
  height: 24px;
  background-color: var(--neutral-800);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-sm);
  color: var(--neutral-400);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.panel-button:hover {
  background-color: var(--neutral-700);
  border-color: var(--primary-500);
}

/* Layer Panel */
.layer-panel {
  margin-bottom: var(--space-md);
}

.layer-list {
  max-height: 200px;
  overflow-y: auto;
}

.layer-item {
  display: flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  border-bottom: 1px solid var(--neutral-700);
}

.layer-item:hover {
  background-color: var(--neutral-700);
}

.layer-item.active {
  background-color: var(--primary-600);
  border: 1px solid var(--primary-400);
}

.layer-thumbnail {
  width: 32px;
  height: 32px;
  background-color: var(--neutral-600);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-sm);
  margin-right: var(--space-sm);
  flex-shrink: 0;
}

.layer-name {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--neutral-400);
}

.layer-visible {
  background: none;
  border: none;
  color: var(--neutral-400);
  cursor: pointer;
  font-size: var(--font-size-sm);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.layer-visible:hover {
  opacity: 1;
}

.layer-controls {
  padding: var(--space-md);
}

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

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

.control-group label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
  margin-bottom: var(--space-xs);
}

/* Sliders */
.slider {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--neutral-700);
  border-radius: var(--radius-sm);
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  background: #FFFFFF;
  border: 1px solid var(--neutral-900);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  background: #FFFFFF;
  border: 1px solid var(--neutral-900);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

/* Select Elements */
select {
  width: 100%;
  background-color: var(--neutral-900);
  color: var(--neutral-400);
  border: 1px solid var(--neutral-700);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

select:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.4);
}

/* History Panel */
.history-list {
  max-height: 150px;
  overflow-y: auto;
}

.history-item {
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  border-bottom: 1px solid var(--neutral-700);
  font-size: var(--font-size-sm);
}

.history-item:hover {
  background-color: var(--neutral-700);
}

.history-item.active {
  background-color: var(--primary-600);
  color: #FFFFFF;
}

/* Status Bar */
.status-bar {
  height: 28px;
  background-color: var(--neutral-900);
  border-top: 1px solid var(--neutral-700);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--neutral-500);
}

.status-left {
  display: flex;
  gap: var(--space-lg);
}

/* Buttons */
.btn {
  padding: var(--space-sm) var(--space-md);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.btn-primary {
  background-color: var(--primary-500);
  color: #FFFFFF;
}

.btn-primary:hover {
  background-color: var(--primary-600);
}

.btn-secondary {
  background-color: var(--neutral-700);
  color: var(--neutral-400);
}

.btn-secondary:hover {
  background-color: var(--neutral-600);
}

/* Focus States */
*:focus {
  outline: none;
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.4);
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--neutral-800);
}

::-webkit-scrollbar-thumb {
  background: var(--neutral-700);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neutral-600);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

.fade-in {
  animation: fadeIn var(--transition-normal);
}

.slide-in {
  animation: slideIn var(--transition-normal);
}

/* Enhanced Animations */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes shimmer {
  0% {
    background-position: -200px 0;
  }
  100% {
    background-position: calc(200px + 100%) 0;
  }
}

.slide-in-up {
  animation: slideInUp var(--transition-slow);
}

.scale-in {
  animation: scaleIn var(--transition-normal);
}

.pulse {
  animation: pulse 2s infinite;
}

.shimmer {
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  background-size: 200px 100%;
  animation: shimmer 1.5s infinite;
}

/* Modal System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 400px;
  width: 90%;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: all var(--transition-normal);
}

.modal-overlay.show .modal {
  transform: scale(1);
}

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

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-xl);
}

.modal-footer {
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--border-light);
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

/* Auth Forms */
.auth-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
}

.form-input {
  padding: var(--space-md);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-400);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-error {
  color: var(--error);
  font-size: var(--font-size-xs);
  margin-top: var(--space-xs);
}

.form-success {
  color: var(--success);
  font-size: var(--font-size-xs);
  margin-top: var(--space-xs);
}

/* Enhanced Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: none;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--error), #DC2626);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-danger:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* User Menu Dropdown */
.user-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: 100;
}

.user-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  padding: var(--space-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border-bottom: 1px solid var(--border-light);
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.dropdown-item-icon {
  width: 16px;
  height: 16px;
  opacity: 0.7;
}

/* History Panel */
.history-panel {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  transition: right var(--transition-normal);
  z-index: 200;
  display: flex;
  flex-direction: column;
}

.history-panel.show {
  right: 0;
}

.history-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.history-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.history-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.history-close:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

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

.history-item {
  padding: var(--space-md);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  background-color: var(--bg-secondary);
}

.history-item:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--primary-400);
  transform: translateX(4px);
}

.history-thumbnail {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  margin-right: var(--space-md);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
}

.history-info {
  flex: 1;
}

.history-name {
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.history-date {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* Loading States */
.loading {
  position: relative;
  color: transparent !important;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid var(--border-light);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Notification System */
.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-md);
  min-width: 300px;
  z-index: 1000;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.notification.show {
  transform: translateX(0);
}

.notification.success {
  border-color: var(--success);
  background-color: var(--success-light);
}

.notification.warning {
  border-color: var(--warning);
  background-color: var(--warning-light);
}

.notification.error {
  border-color: var(--error);
  background-color: var(--error-light);
}

/* Enhanced Tooltips */
.tooltip {
  position: absolute;
  background-color: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition-fast);
}

.tooltip.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Responsive Enhancements */
@media (max-width: 768px) {
  .modal {
    width: 95%;
    margin: var(--space-md);
  }
  
  .history-panel {
    width: 100%;
    right: -100%;
  }
  
  .notification {
    right: 10px;
    left: 10px;
    min-width: auto;
  }
}

/* Enhanced Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-dark);
}

/* Focus Management */
.focus-visible {
  outline: 2px solid var(--primary-400);
  outline-offset: 2px;
}

/* Dark theme scrollbars */
[data-theme="dark"] ::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

/* Admin Panel Styles */
.admin-panel-modal {
  z-index: 1000;
}

.admin-panel-content {
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.admin-panel-content .modal-header {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: var(--text-inverse);
  padding: var(--space-lg);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.admin-panel-content .modal-header h2 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.admin-panel-content .modal-close {
  background: none;
  border: none;
  color: var(--text-inverse);
  font-size: 24px;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: background-color 0.2s;
}

.admin-panel-content .modal-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.admin-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.stat-card {
  background: var(--bg-secondary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.stat-card h3 {
  margin: 0 0 var(--space-md) 0;
  color: var(--primary-500);
  font-size: 1.1rem;
}

.stat-card p {
  margin: var(--space-sm) 0;
  color: var(--text-secondary);
}

.stat-card strong {
  color: var(--text-primary);
}

.admin-actions {
  margin-bottom: var(--space-xl);
}

.admin-actions h3 {
  margin: 0 0 var(--space-md) 0;
  color: var(--text-primary);
}

.admin-actions .btn {
  margin-right: var(--space-md);
  margin-bottom: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.admin-user-info {
  background: var(--bg-tertiary);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.admin-user-info h3 {
  margin: 0 0 var(--space-md) 0;
  color: var(--text-primary);
}

.admin-user-info p {
  margin: var(--space-sm) 0;
  color: var(--text-secondary);
}

.admin-user-info strong {
  color: var(--text-primary);
}

.admin-menu-item {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: var(--text-inverse) !important;
  font-weight: 600;
  border-radius: var(--radius-sm);
  margin: var(--space-xs) 0;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.admin-menu-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
}

.admin-menu-item i {
  font-size: 14px;
}

/* Icon styles for admin panel */
.icon-shield::before {
  content: "🛡️";
}

.icon-download::before {
  content: "📥";
}

.icon-trash::before {
  content: "🗑️";
}

.icon-info::before {
  content: "ℹ️";
}

/* Admin panel responsive */
@media (max-width: 768px) {
  .admin-panel-content {
    width: 95%;
    margin: var(--space-md);
  }
  
  .admin-stats {
    grid-template-columns: 1fr;
  }
  
  .admin-actions .btn {
    width: 100%;
    justify-content: center;
    margin-right: 0;
  }
}

/* SEO Optimized Elements Styles */

/* Skip Navigation */
.skip-nav {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-500);
  color: white;
  padding: 8px;
  text-decoration: none;
  border-radius: 4px;
  z-index: 1000;
}

.skip-nav:focus {
  top: 6px;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
  color: white;
  padding: 4rem 2rem 3rem;
  text-align: center;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 1rem;
  border-radius: 8px;
  backdrop-filter: blur(10px);
}

.feature-icon {
  font-size: 1.5rem;
}

/* Features Section */
.features-section {
  padding: 4rem 2rem;
  background: var(--neutral-50);
}

.features-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--neutral-800);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-card h4 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--primary-600);
}

.feature-card p {
  color: var(--neutral-600);
  line-height: 1.6;
}

/* FAQ Section */
.faq-section {
  padding: 4rem 2rem;
  background: white;
}

.faq-section h3 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--neutral-800);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--neutral-50);
  margin-bottom: 1rem;
  border-radius: 8px;
  overflow: hidden;
}

.faq-item h4 {
  padding: 1.5rem 2rem;
  margin: 0;
  font-size: 1.25rem;
  color: var(--primary-600);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item p {
  padding: 0 2rem 1.5rem;
  margin: 0;
  color: var(--neutral-600);
  line-height: 1.6;
  display: none;
}

.faq-item.active p {
  display: block;
}

/* Footer */
.main-footer {
  background: var(--neutral-800);
  color: white;
  padding: 3rem 2rem 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer-section h4 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary-400);
}

.footer-section p {
  opacity: 0.8;
  line-height: 1.6;
}

.footer-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section ul li {
  padding: 0.25rem 0;
  opacity: 0.8;
}

.footer-section ul li:hover {
  opacity: 1;
  color: var(--primary-400);
}

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--neutral-700);
  opacity: 0.6;
}

/* Container Utility */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .hero-features {
    grid-template-columns: 1fr;
  }
  
  .features-title,
  .faq-section h3 {
    font-size: 2rem;
  }
  
  .features-section,
  .faq-section {
    padding: 3rem 1rem;
  }
  
  .feature-card {
    padding: 1.5rem;
  }
  
  .faq-item h4,
  .faq-item p {
    padding: 1rem;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* Print Styles for SEO */
@media print {
  .top-menu,
  .hero-section,
  .features-section,
  .faq-section,
  .main-footer {
    display: none;
  }
  
  .main-content {
    margin: 0;
    padding: 0;
  }
}
/* ===== ZOOM DISPLAY FIXES ===== */
/* 修复缩放显示不全问题 */

/* 基础布局优化 */
html, body {
  height: auto;
  min-height: 100vh;
  overflow-x: auto;
  overflow-y: auto;
  zoom: reset; /* 重置缩放 */
}

body {
  zoom: inherit; /* 继承浏览器缩放设置 */
  -webkit-text-size-adjust: 100%; /* iOS缩放修复 */
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* 主内容区域改进 */
.main-content {
  display: flex;
  min-height: calc(100vh - 68px); /* 最小高度 */
  height: auto; /* 自动高度 */
  max-height: none; /* 无最大高度限制 */
  overflow: visible; /* 允许内容显示 */
  position: relative;
  z-index: 1;
}

/* 编辑器区域 */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: auto;
  min-width: 0; /* 防止flex子元素溢出 */
  background-color: var(--neutral-900);
  position: relative;
}

/* Canvas容器改进 */
.canvas-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  position: relative;
  min-height: 400px; /* 最小高度 */
  padding: 1rem;
}

/* Canvas响应式 */
#mainCanvas {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background-color: var(--neutral-800);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* 工具栏改进 */
.toolbar {
  width: 56px;
  min-height: calc(100vh - 68px);
  background-color: var(--neutral-900);
  border-right: 1px solid var(--neutral-700);
  display: flex;
  flex-direction: column;
  padding: var(--space-sm) 0;
  gap: var(--space-sm);
  overflow-y: auto;
  flex-shrink: 0; /* 防止收缩 */
}

/* 属性面板改进 */
.properties-panel {
  width: 280px;
  min-width: 280px;
  background-color: var(--neutral-900);
  border-left: 1px solid var(--neutral-700);
  overflow-y: auto;
  flex-shrink: 0;
  max-height: calc(100vh - 68px);
}

/* 容器改进 */
.container {
  max-width: 100%;
  width: 100%;
  margin: 0 auto;
  padding: 0 1rem;
  box-sizing: border-box;
}

/* 移动端缩放优化 */
@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
    height: auto;
    min-height: calc(100vh - 60px);
  }
  
  .toolbar {
    width: 100%;
    height: 60px;
    flex-direction: row;
    padding: var(--space-xs) var(--space-sm);
    overflow-x: auto;
    overflow-y: hidden;
  }
  
  .tool-group {
    flex-direction: row;
    gap: var(--space-xs);
  }
  
  .tool-button {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
  }
  
  .properties-panel {
    width: 100%;
    height: auto;
    max-height: 300px;
  }
  
  .canvas-container {
    min-height: 300px;
    padding: 0.5rem;
  }
  
  #mainCanvas {
    max-width: calc(100vw - 2rem);
    max-height: 50vh;
  }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
  .main-content {
    min-height: calc(100vh - 50px);
  }
  
  .toolbar {
    height: 50px;
  }
  
  .tool-button {
    width: 32px;
    height: 32px;
    min-width: 32px;
    min-height: 32px;
  }
  
  .canvas-container {
    min-height: 250px;
    padding: 0.25rem;
  }
  
  #mainCanvas {
    max-width: calc(100vw - 1rem);
    max-height: 40vh;
  }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  #mainCanvas {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* 缩放级别优化 */
@media (zoom: 0.75) {
  .main-content {
    min-height: calc(100vh - 51px); /* 调整 */
  }
  
  .toolbar {
    min-height: calc(100vh - 51px);
  }
}

@media (zoom: 1.25) {
  .main-content {
    min-height: calc(100vh - 85px); /* 调整 */
  }
  
  .toolbar {
    min-height: calc(100vh - 85px);
  }
}

@media (zoom: 1.5) {
  .main-content {
    min-height: calc(100vh - 102px); /* 调整 */
  }
  
  .toolbar {
    min-height: calc(100vh - 102px);
  }
}

@media (zoom: 2) {
  .main-content {
    min-height: calc(100vh - 136px); /* 调整 */
  }
  
  .toolbar {
    min-height: calc(100vh - 136px);
  }
}

/* 滚动条优化 */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--neutral-600) var(--neutral-900);
}

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

*::-webkit-scrollbar-track {
  background: var(--neutral-900);
}

*::-webkit-scrollbar-thumb {
  background-color: var(--neutral-600);
  border-radius: 4px;
}

*::-webkit-scrollbar-thumb:hover {
  background-color: var(--neutral-500);
}

/* 防止水平滚动 */
body, html {
  overflow-x: hidden;
}

/* 但允许内容区域水平滚动 */
.editor-area, .toolbar, .properties-panel {
  overflow-x: visible;
}

.canvas-container {
  overflow-x: auto;
  overflow-y: auto;
}

/* ===== END ZOOM DISPLAY FIXES ===== */