/* ===================================
   CANVAS ART WEBSHOP - DESIGN SYSTEM
   =================================== */

/* CSS Variables - Design Tokens */
:root {
  /* Color Palette */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #ec4899;
  --secondary-dark: #db2777;
  --accent-color: #f59e0b;
  --accent-light: #fbbf24;

  /* Neutral Colors */
  --dark-bg: #0f172a;
  --dark-card: #1e293b;
  --dark-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-gold: linear-gradient(135deg, #f6d365 0%, #fda085 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.4);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
}

/* ===================================
   RESET & BASE STYLES
   =================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  background: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
}

ul,
ol {
  list-style: none;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.glass-card {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--font-size-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
  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-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

.btn-outline {
  border: 2px solid var(--primary-color);
  color: var(--primary-light);
  background: transparent;
}

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

/* ===================================
   HEADER & NAVIGATION
   =================================== */

.header {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.header-top {
  background: var(--gradient-primary);
  padding: var(--spacing-xs) 0;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.header-main {
  padding: var(--spacing-md) 0;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-icon {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-icon:hover {
  color: var(--primary-light);
  transform: scale(1.1);
}

.cart-badge {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--gradient-secondary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 700;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-xs);
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

/* ===================================
   HERO SECTION
   =================================== */

.hero {
  background: var(--gradient-hero);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 900;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  font-weight: 300;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===================================
   CATEGORIES SECTION
   =================================== */

.categories {
  background: var(--dark-bg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-muted);
}

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

.category-card {
  position: relative;
  height: 300px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  z-index: 1;
  transition: all var(--transition-base);
}

.category-card:hover::before {
  background: linear-gradient(to top, rgba(99, 102, 241, 0.8), transparent);
}

.category-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.category-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.category-card:hover .category-image {
  transform: scale(1.1);
}

.category-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-lg);
  z-index: 2;
}

.category-name {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.category-count {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===================================
   PRODUCTS SECTION
   =================================== */

.products {
  background: var(--dark-bg);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.product-card {
  background: rgba(30, 41, 59, 0.5);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.product-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl), 0 0 30px rgba(99, 102, 241, 0.3);
  border-color: rgba(99, 102, 241, 0.3);
}

.product-image-wrapper {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--dark-card);
}

.product-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-image {
  transform: scale(1.1);
}

.product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(99, 102, 241, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.overlay-btn {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: white;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  transition: all var(--transition-fast);
}

.overlay-btn:hover {
  transform: scale(1.2);
  box-shadow: var(--shadow-lg);
}

.product-info {
  padding: var(--spacing-md);
}

.product-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.product-price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===================================
   CUSTOM SECTION
   =================================== */

.custom-section {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.custom-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.custom-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-xl);
  border: 2px solid rgba(99, 102, 241, 0.2);
  transition: all var(--transition-base);
}

.custom-card:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

.custom-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
}

.custom-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.custom-description {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

/* ===================================
   FOOTER
   =================================== */

.footer {
  background: var(--dark-card);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-link {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-light);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  transition: all var(--transition-base);
}

.social-icon:hover {
  background: var(--gradient-primary);
  color: white;
  transform: translateY(-3px);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

  .categories-grid {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }

  .custom-grid {
    grid-template-columns: 1fr;
  }
}

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {

  0%,
  100% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.05);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease-out;
}

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

/* ===================================
   MODAL STYLES
   =================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.modal-content {
  background: var(--dark-card);
  border-radius: var(--radius-xl);
  max-width: 1000px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

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

.modal-close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--gradient-secondary);
  transform: rotate(90deg);
}

.modal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
}

.modal-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--dark-bg);
}

.modal-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-info {
  display: flex;
  flex-direction: column;
}

.modal-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-price {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-lg);
}

.modal-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

.modal-features {
  list-style: none;
  margin-top: var(--spacing-md);
}

.modal-features li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
}

.modal-sizes h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.size-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.size-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  transition: all var(--transition-fast);
}

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

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

/* ===================================
   NOTIFICATION STYLES
   =================================== */

.notification {
  position: fixed;
  top: 100px;
  right: var(--spacing-md);
  background: var(--dark-card);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  z-index: 3000;
  transform: translateX(400px);
  transition: transform var(--transition-base);
  min-width: 300px;
}

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

.notification-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-primary);
  font-weight: 500;
}

.notification-content svg {
  flex-shrink: 0;
  color: var(--primary-light);
}

.notification-success {
  border-color: rgba(34, 197, 94, 0.5);
}

.notification-success .notification-content svg {
  color: #22c55e;
}

.notification-info {
  border-color: rgba(59, 130, 246, 0.5);
}

.notification-info .notification-content svg {
  color: #3b82f6;
}

/* ===================================
   MOBILE MENU ACTIVE STATE
   =================================== */

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 120px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-xl);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-base);
    pointer-events: none;
  }

  .nav-menu.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-link {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-base);
  }

  .modal-grid {
    grid-template-columns: 1fr;
  }

  .size-options {
    grid-template-columns: 1fr;
  }
}

/* ===================================
   HEADER SCROLL EFFECT
   =================================== */

.header.scrolled {
  box-shadow: var(--shadow-xl);
}

.header.scrolled .header-main {
  padding: var(--spacing-sm) 0;
}

/* ===================================
   CART BADGE ANIMATION
   =================================== */

.cart-badge {
  transition: transform var(--transition-fast);
}

@keyframes slideInRight {
  from {
    transform: translateX(400px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }

  to {
    transform: translateX(400px);
    opacity: 0;
  }
}