/* ===================================
   KAVI LOOM LLC - Light Theme Styles
   =================================== */

/* === CSS RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Light Theme Colors */
  --color-primary: #2c3e50;
  --color-secondary: #3498db;
  --color-accent: #e74c3c;
  --color-success: #27ae60;
  
  /* Backgrounds */
  --color-bg-primary: #f8f9fa;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #e9ecef;
  
  /* Text Colors */
  --color-text-primary: #2c3e50;
  --color-text-secondary: #6c757d;
  --color-text-light: #adb5bd;
  
  /* Borders */
  --color-border: #dee2e6;
  --color-border-light: #f1f3f5;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
}

/* === TYPOGRAPHY === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-primary);
}

/* === LAYOUT === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--spacing-md);
}

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

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

/* === HEADER === */
.header {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.logo img {
  height: 40px;
  width: auto;
}

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

.nav-link {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-secondary);
}

.nav-link.active {
  color: var(--color-secondary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-primary);
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* Cart Icon */
.cart-icon {
  position: relative;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.cart-icon:hover {
  background-color: var(--color-bg-tertiary);
}

.cart-icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-primary);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

/* === FOOTER === */
.footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  margin-top: var(--spacing-xxl);
}

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

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.95rem;
}

.footer-section a:hover {
  color: white;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-xs);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-align: center;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: #2980b9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: #1a252f;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-success {
  background-color: var(--color-success);
  color: white;
}

.btn-success:hover {
  background-color: #229954;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.9rem;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
}

.btn-block {
  display: block;
  width: 100%;
}

/* === CARDS === */
.card {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.card-body {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.card-text {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
  font-size: 0.95rem;
}

.card-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* === PRODUCT CARD === */
.product-card {
  position: relative;
}

.product-badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background-color: var(--color-secondary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  z-index: 10;
}

.product-price {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.product-category {
  display: inline-block;
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  padding: 4px var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: var(--spacing-xs);
}

/* === GRID === */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* === HERO SECTION === */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: var(--spacing-xxl) 0;
  text-align: center;
  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"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

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

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: white;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.9);
}

/* === FORMS === */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background-color: var(--color-bg-secondary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* === CART SIDEBAR === */
.cart-sidebar {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background-color: var(--color-bg-secondary);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  transition: right var(--transition-base);
  display: flex;
  flex-direction: column;
}

.cart-sidebar.active {
  right: 0;
}

.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.cart-overlay.active {
  opacity: 1;
  visibility: visible;
}

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

.cart-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-primary);
  padding: var(--spacing-xs);
}

.cart-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
}

.cart-footer {
  padding: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.cart-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.cart-item-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.cart-item-details {
  flex: 1;
}

.cart-item-title {
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
}

.cart-item-price {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

.cart-item-remove {
  background: none;
  border: none;
  color: var(--color-accent);
  cursor: pointer;
  font-size: 0.9rem;
}

.quantity-control {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

.quantity-btn {
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.quantity-btn:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-secondary);
}

.cart-total {
  display: flex;
  justify-content: space-between;
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
}

/* === FILTERS === */
.filter-section {
  background-color: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-lg);
}

.filter-title {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.filter-group {
  margin-bottom: var(--spacing-md);
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-xs);
  cursor: pointer;
}

.filter-checkbox input {
  cursor: pointer;
}

/* === UTILITIES === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 73px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 73px);
    background-color: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--spacing-lg);
    transition: left var(--transition-base);
    box-shadow: var(--shadow-lg);
  }
  
  .nav.active {
    left: 0;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .cart-sidebar {
    width: 100%;
    right: -100%;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
}