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

:root {
  /* Color System - Modern Gradient Palette */
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-secondary: #8b5cf6;
  --color-accent: #ec4899;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
  --gradient-primary-subtle: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  --gradient-surface: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  --gradient-dark: linear-gradient(135deg, #1f2937 0%, #111827 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  --shadow-glow-lg: 0 0 60px rgba(99, 102, 241, 0.5);
  
  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Menlo', 'Monaco', 'Courier New', monospace;
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --space-unit: 0.25rem;
  --space-1: calc(1 * var(--space-unit));
  --space-2: calc(2 * var(--space-unit));
  --space-3: calc(3 * var(--space-unit));
  --space-4: calc(4 * var(--space-unit));
  --space-6: calc(6 * var(--space-unit));
  --space-8: calc(8 * var(--space-unit));
  --space-12: calc(12 * var(--space-unit));
  --space-16: calc(16 * var(--space-unit));
  --space-24: calc(24 * var(--space-unit));
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-dropdown: 10;
  --z-sticky: 20;
  --z-fixed: 30;
  --z-modal: 40;
  --z-popover: 50;
  --z-tooltip: 60;
  --z-toast: 70;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */
body {
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  color: var(--color-gray-800);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

::selection {
  background: rgba(99, 102, 241, 0.3);
  color: var(--color-gray-900);
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-gray-900);
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  background-size: 200% auto;
  animation: gradient-shift 4s ease infinite;
}

.text-balance {
  text-wrap: balance;
}

/* ==========================================================================
   3D Container & Canvas
   ========================================================================== */
#3d-container {
  position: relative;
  background: linear-gradient(135deg,
    rgba(248, 250, 252, 0.95) 0%,
    rgba(226, 232, 240, 0.95) 100%
  );
  border-radius: var(--radius-xl);
  overflow: hidden;
  isolation: isolate;
}

#3d-container::before {
  content: '';
  position: absolute;
  inset: 0;
  background: conic-gradient(
    from 0deg at 50% 50%,
    #6366f1 0deg,
    #8b5cf6 120deg,
    #ec4899 240deg,
    #6366f1 360deg
  );
  opacity: 0.1;
  z-index: -1;
  animation: rotate-gradient 20s linear infinite;
}

#3d-container::after {
  content: '';
  position: absolute;
  inset: -2px;
  background: linear-gradient(
    135deg,
    #6366f1 0%,
    #8b5cf6 25%,
    #ec4899 50%,
    #8b5cf6 75%,
    #6366f1 100%
  );
  border-radius: calc(var(--radius-xl) + 2px);
  z-index: -2;
  opacity: 0.3;
  filter: blur(8px);
  animation: pulse-border 3s ease-in-out infinite;
}

.canvas-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  z-index: 1;
}

/* ==========================================================================
   Custom Scrollbar
   ========================================================================== */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: linear-gradient(180deg,
    var(--color-gray-100) 0%,
    var(--color-gray-200) 100%
  );
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  border: 3px solid var(--color-gray-100);
  transition: var(--transition-base);
}

::-webkit-scrollbar-thumb:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}

::-webkit-scrollbar-corner {
  background: transparent;
}

/* ==========================================================================
   Animations & Keyframes
   ========================================================================== */
@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(2deg);
  }
  66% {
    transform: translateY(-10px) rotate(-2deg);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes gradient-shift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes rotate-gradient {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse-border {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.02);
  }
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes bounce-subtle {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.animate-float {
  animation: float 6s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-shimmer {
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.4) 50%,
    transparent 100%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite;
}

.animate-slide-up {
  animation: slide-up 0.6s ease-out;
}

.animate-fade-in {
  animation: fade-in 0.5s ease-out;
}

.animate-bounce-subtle {
  animation: bounce-subtle 2s ease-in-out infinite;
}

/* ==========================================================================
   Glass Morphism
   ========================================================================== */
.glass {
  background: var(--gradient-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.glass-dark {
  background: linear-gradient(135deg,
    rgba(31, 41, 55, 0.8) 0%,
    rgba(17, 24, 39, 0.9) 100%
  );
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Interactive Elements
   ========================================================================== */
.hover-lift {
  transition: all var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow:
    var(--shadow-xl),
    var(--shadow-glow);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow-lg);
}

.hover-scale {
  transition: transform var(--transition-base);
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* ==========================================================================
   Form Elements
   ========================================================================== */

/* Range Sliders */
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: var(--radius-full);
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 0%,
    var(--color-gray-300) 100%
  );
  outline: none;
  transition: var(--transition-base);
}

input[type="range"]:hover {
  background: linear-gradient(
    90deg,
    var(--color-gray-300) 0%,
    var(--color-gray-400) 100%
  );
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  cursor: pointer;
  border: 3px solid var(--color-white);
  box-shadow:
    var(--shadow-md),
    0 0 0 4px rgba(99, 102, 241, 0.2);
  transition: all var(--transition-base);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow:
    var(--shadow-lg),
    0 0 0 6px rgba(99, 102, 241, 0.3);
}

input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  cursor: pointer;
  border: 3px solid var(--color-white);
  box-shadow:
    var(--shadow-md),
    0 0 0 4px rgba(99, 102, 241, 0.2);
  transition: all var(--transition-base);
}

/* Color Picker */
input[type="color"] {
  width: 100%;
  height: 48px;
  border: none;
  border-radius: var(--radius-lg);
  padding: 2px;
  cursor: pointer;
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

input[type="color"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 0;
}

input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: calc(var(--radius-lg) - 2px);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* File Upload */
.file-upload-area {
  position: relative;
  border: 2px dashed var(--color-gray-300);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  background: linear-gradient(
    135deg,
    var(--color-gray-50) 0%,
    var(--color-white) 100%
  );
}

.file-upload-area:hover {
  border-color: var(--color-primary);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.05) 0%,
    rgba(139, 92, 246, 0.05) 100%
  );
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.file-upload-area.drag-over {
  border-color: var(--color-primary);
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.1) 0%,
    rgba(139, 92, 246, 0.1) 100%
  );
  box-shadow: var(--shadow-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255, 255, 255, 0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}

.btn:focus:not(:active)::after {
  animation: ripple 1s ease-out;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-300);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-700);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: var(--color-gray-300);
}

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary-light);
  box-shadow:
    var(--shadow-xl),
    0 20px 40px -15px rgba(99, 102, 241, 0.2);
}

.card.glass {
  background: var(--gradient-glass);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  background: linear-gradient(
    135deg,
    var(--color-gray-50) 0%,
    transparent 100%
  );
}

.card-body {
  padding: var(--space-6);
}

/* ==========================================================================
   Loading States
   ========================================================================== */
.spinner {
  animation: spin 1s linear infinite;
}

.spinner-lg {
  width: 3rem;
  height: 3rem;
  border-width: 0.25rem;
}

.spinner-primary {
  border-top-color: var(--color-primary);
  border-right-color: var(--color-primary-light);
  border-bottom-color: var(--color-secondary);
  border-left-color: transparent;
}

/* ==========================================================================
   Notifications & Toasts
   ========================================================================== */
.notification {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--color-primary);
  animation: slide-up 0.3s ease-out;
}

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

.notification.error {
  border-left-color: var(--color-danger);
}

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

.notification.info {
  border-left-color: var(--color-info);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 768px) {
  :root {
    --radius-xl: 1rem;
    --radius-lg: 0.75rem;
  }
  
  #3d-container {
    height: 400px;
  }
  
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .card-header,
  .card-body {
    padding: var(--space-4);
  }
}

@media (max-width: 480px) {
  .grid-cols-4,
  .grid-cols-3,
  .grid-cols-2 {
    grid-template-columns: 1fr;
  }
  
  #3d-container {
    height: 350px;
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  .no-print {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  a {
    color: black !important;
    text-decoration: underline !important;
  }
}

/* ==========================================================================
   Utility Classes (Cont'd)
   ========================================================================== */
.shadow-neumorphic {
  box-shadow:
    8px 8px 16px rgba(0, 0, 0, 0.1),
    -8px -8px 16px rgba(255, 255, 255, 0.5);
}

.shadow-neumorphic-inset {
  box-shadow:
    inset 4px 4px 8px rgba(0, 0, 0, 0.1),
    inset -4px -4px 8px rgba(255, 255, 255, 0.5);
}

.text-shadow-sm {
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.text-shadow-lg {
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* ==========================================================================
   Accessibility
   ========================================================================== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.focus-ring {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================================================
   Selection & Highlight
   ========================================================================== */
.highlight {
  position: relative;
  z-index: 1;
}

.highlight::before {
  content: '';
  position: absolute;
  top: 0;
  left: -0.25em;
  right: -0.25em;
  bottom: 0;
  background: linear-gradient(
    120deg,
    rgba(99, 102, 241, 0.2) 0%,
    rgba(139, 92, 246, 0.2) 100%
  );
  z-index: -1;
  transform: skewX(-15deg);
  border-radius: 0.25em;
}

/* ==========================================================================
   Gradient Backgrounds
   ========================================================================== */
.bg-gradient-primary {
  background: var(--gradient-primary);
}

.bg-gradient-surface {
  background: var(--gradient-surface);
}

.bg-gradient-subtle {
  background: var(--gradient-primary-subtle);
}

/* ==========================================================================
   Border Effects
   ========================================================================== */
.border-gradient {
  border: double 3px transparent;
  border-radius: var(--radius-lg);
  background-image:
    linear-gradient(white, white),
    var(--gradient-primary);
  background-origin: border-box;
  background-clip: content-box, border-box;
}

/* ==========================================================================
   Loading Overlay
   ========================================================================== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fade-in 0.3s ease-out;
}

/* ==========================================================================
   Tooltips
   ========================================================================== */
.tooltip {
  position: relative;
}

.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  padding: var(--space-2) var(--space-3);
  background: var(--color-gray-900);
  color: var(--color-white);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-base);
  z-index: var(--z-tooltip);
}

.tooltip:hover::before {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-gradient {
    display: inline-block;
    position: relative;
    margin-bottom: 1rem;
}

.hero-gradient::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    filter: blur(30px);
    opacity: 0.2;
    animation: pulse 2s ease-in-out infinite;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.badges {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-gray-700);
    box-shadow: var(--shadow-sm);
}

.badge i {
    width: 16px;
    height: 16px;
}

/* Workspace Layout */
.workspace {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

@media (max-width: 1200px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}

/* Canvas Container */
.canvas-container {
    width: 100%;
    height: 500px;
    position: relative;
}

.canvas-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    z-index: 10;
}

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

.canvas-loading p {
    margin-top: 1rem;
    color: var(--color-gray-600);
    font-weight: 500;
}

.canvas-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: linear-gradient(to right,
        rgba(249, 250, 251, 0.5) 0%,
        rgba(255, 255, 255, 0.5) 100%
    );
    border-top: 1px solid var(--color-gray-100);
}

.canvas-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-gray-600);
}

.canvas-stats {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

/* Header Content */
.header-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
}

.header-text h2 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--color-gray-900);
}

.header-text p {
    font-size: 0.875rem;
    margin: 0;
    color: var(--color-gray-500);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.header-icon-text {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-wrapper.text-icon {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
}

.icon-wrapper.text-icon i {
    color: var(--color-primary);
}

.icon-wrapper.image-icon {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
}

.icon-wrapper.image-icon i {
    color: var(--color-success);
}

.icon-wrapper.shapes-icon {
    background: linear-gradient(135deg, #fed7aa 0%, #fdba74 100%);
}

.icon-wrapper.shapes-icon i {
    color: var(--color-warning);
}

/* Quick Actions */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .quick-actions {
        grid-template-columns: repeat(2, 1fr);
    }
}

.action-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.action-card:hover {
    border-color: var(--color-primary-light);
}

.action-card i {
    width: 24px;
    height: 24px;
    color: var(--color-gray-500);
    margin-bottom: 0.75rem;
    transition: color var(--transition-base);
}

.action-card:hover i {
    color: var(--color-primary);
}

.action-card span {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

/* Input Groups */
.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.input-with-button {
    display: flex;
    gap: 0.5rem;
}

.input-with-button input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    color: var(--color-gray-900);
    outline: none;
    transition: all var(--transition-base);
}

.input-with-button input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Presets */
.presets {
    margin-bottom: 1.5rem;
}

.presets label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.preset-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
}

.preset-btn {
    padding: 0.75rem;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.preset-btn:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.preset-btn i {
    width: 16px;
    height: 16px;
}

/* Slider Groups */
.slider-group {
    margin-bottom: 1.5rem;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.slider-label label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.slider-label span {
    font-weight: 500;
    color: var(--color-primary);
}

/* Info Text */
.info-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-gray-500);
}

.info-text i {
    width: 12px;
    height: 12px;
}

/* Shapes Section */
.shapes-section {
    margin-bottom: 1.5rem;
}

.shapes-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: 0.75rem;
}

.shapes-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
}

.shape-btn {
    aspect-ratio: 1;
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.shape-btn:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

.shape-btn i {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.shape-btn span {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

/* Materials Section */
.materials-section {
    margin-bottom: 1.5rem;
}

.materials-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: 0.75rem;
}

.material-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.color-picker label,
.material-select label {
    display: block;
    margin-bottom: 0.25rem;
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.color-palette label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
}

.color-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-base);
}

.color-btn:hover {
    transform: scale(1.1);
}

/* Size Controls */
.size-controls {
    margin-bottom: 1.5rem;
}

.size-controls h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: 0.75rem;
}

.size-sliders {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.size-slider {
    margin-bottom: 0.5rem;
}

/* Export Section */
.export-section {
    margin-top: 2rem;
}

.export-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: 0.75rem;
}

.export-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.btn-dark {
    background: linear-gradient(135deg, var(--color-gray-700) 0%, var(--color-gray-900) 100%);
    color: var(--color-white);
}

.btn-dark:hover {
    background: linear-gradient(135deg, var(--color-gray-800) 0%, var(--color-black) 100%);
}

.share-link {
    text-align: center;
}

.share-link button {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 0.75rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.share-link button:hover {
    color: var(--color-primary-dark);
}

/* Advanced Features */
.advanced-features {
    margin-top: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature {
    text-align: center;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.feature-icon.ai-icon {
    background: var(--gradient-primary);
}

.feature-icon.remesh-icon {
    background: linear-gradient(135deg, var(--color-success) 0%, #059669 100%);
}

.feature-icon.materials-icon {
    background: linear-gradient(135deg, var(--color-accent) 0%, #db2777 100%);
}

.feature-icon i {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.feature h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.feature p {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.5;
}

/* Toast */
.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border-left: 4px solid var(--color-primary);
}

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

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

.toast-content.warning {
    border-left-color: var(--color-warning);
}

.toast-content.info {
    border-left-color: var(--color-info);
}

.toast-content i {
    width: 20px;
    height: 20px;
}

.toast-content.success i {
    color: var(--color-success);
}

.toast-content.error i {
    color: var(--color-danger);
}

.toast-content.warning i {
    color: var(--color-warning);
}

.toast-content.info i {
    color: var(--color-info);
}

/* Loading Card */
.loading-card {
    background: var(--gradient-glass);
    border-radius: var(--radius-xl);
    padding: 2rem;
    max-width: 400px;
    width: 90vw;
}

.loading-content {
    text-align: center;
}

.loading-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-gray-900);
    margin: 1rem 0 0.5rem;
}

.loading-content p {
    color: var(--color-gray-600);
    margin-bottom: 1.5rem;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

#loadingProgress {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

/* File Upload Area */
.file-upload-area {
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
}

.file-upload-area:hover {
    border-color: var(--color-primary);
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.05) 0%,
        rgba(139, 92, 246, 0.05) 100%
    );
}

.file-upload-area.drag-over {
    border-color: var(--color-primary);
    background: linear-gradient(135deg,
        rgba(99, 102, 241, 0.1) 0%,
        rgba(139, 92, 246, 0.1) 100%
    );
    box-shadow: var(--shadow-glow);
}

.file-upload-area i {
    width: 48px;
    height: 48px;
    color: var(--color-gray-400);
    margin-bottom: 1rem;
}

.upload-text {
    display: block;
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.upload-subtext {
    display: block;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.upload-note {
    font-size: 0.75rem;
    color: var(--color-gray-400);
    margin-top: 0.5rem;
}

/* Hidden utility */
.hidden {
    display: none !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .badge {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .header-actions {
        flex-wrap: wrap;
    }
    
    .material-controls {
        grid-template-columns: 1fr;
    }
    
    .shapes-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}