/* ==========================================================================
   Chennai Online Shopping - Design Tokens & Styles
   Source of Truth: Stitch UI/UX Design System (FreshCart India / Chennai Online Shopping)
   ========================================================================== */

:root {
  /* Stitch Theme Colors */
  --cos-primary: #15803D;
  --cos-primary-dark: #166534;
  --cos-primary-container: #15803D;
  --cos-primary-fixed: #bbf7d0;
  --cos-on-primary: #ffffff;
  
  --cos-secondary: #904D00;
  --cos-secondary-container: #ffa454;
  --cos-secondary-accent: #f2994a;
  
  --cos-tertiary: #705D00;
  --cos-tertiary-container: #c9a900;
  
  --cos-surface: #ffffff;
  --cos-surface-lowest: #ffffff;
  --cos-surface-low: #f0f3ff;
  --cos-surface-container: #e7eefe;
  --cos-surface-container-high: #e2e8f8;
  --cos-surface-container-highest: #dce2f3;
  
  --cos-on-surface: #151C27;
  --cos-on-surface-variant: #3f4942;
  --cos-outline: #6F7A71;
  --cos-outline-variant: #BFC9C0;
  --cos-error: #BA1A1A;

  /* Typography */
  --cos-font-family: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Spacing Scale (8px grid) */
  --cos-space-xs: 8px;
  --cos-space-sm: 16px;
  --cos-space-md: 24px;
  --cos-space-lg: 32px;
  --cos-space-xl: 48px;
  --cos-container-max: 1280px;

  /* Roundedness */
  --cos-radius-sm: 4px;
  --cos-radius-default: 8px;
  --cos-radius-md: 12px;
  --cos-radius-lg: 16px;
  --cos-radius-full: 9999px;

  /* Shadows (Tonal subtle elevation) */
  --cos-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --cos-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --cos-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--cos-font-family);
  background-color: var(--cos-surface);
  color: var(--cos-on-surface);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Typography styles */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--cos-font-family);
  color: var(--cos-on-surface);
  margin-top: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.cos-container {
  max-width: var(--cos-container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--cos-space-sm);
  padding-right: var(--cos-space-sm);
}

/* Header & Navigation */
.cos-header {
  background-color: var(--cos-surface-lowest);
  border-bottom: 1px solid var(--cos-outline-variant);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.cos-top-bar {
  background-color: var(--cos-primary-dark);
  color: #ffffff;
  padding: 6px 0;
  font-size: 13px;
  font-weight: 500;
}

.cos-top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cos-nav-main {
  padding: 12px 0;
}

.cos-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cos-space-md);
}

.cos-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--cos-primary);
}

.cos-brand img {
  height: 48px;
  width: auto;
  border-radius: var(--cos-radius-sm);
}

.cos-brand-text {
  display: flex;
  flex-direction: column;
}

.cos-brand-name {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cos-primary);
  line-height: 1.2;
}

.cos-brand-tagline {
  font-size: 11px;
  font-weight: 500;
  color: var(--cos-on-surface-variant);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cos-search-bar {
  flex: 1;
  max-width: 540px;
  display: flex;
  align-items: center;
  background-color: var(--cos-surface-low);
  border: 1px solid var(--cos-outline-variant);
  border-radius: var(--cos-radius-default);
  padding: 8px 14px;
}

.cos-search-bar input {
  width: 100%;
  border: none;
  background: transparent;
  outline: none;
  font-family: var(--cos-font-family);
  font-size: 14px;
  color: var(--cos-on-surface);
}

.cos-nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.cos-nav-link {
  text-decoration: none;
  color: var(--cos-on-surface);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--cos-radius-default);
  transition: background-color 0.2s ease;
}

.cos-nav-link:hover {
  background-color: var(--cos-surface-low);
  color: var(--cos-primary);
}

.cos-cart-btn {
  background-color: var(--cos-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--cos-radius-default);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
}

.cos-cart-btn:hover {
  background-color: var(--cos-primary-dark);
  color: #ffffff;
}

.cos-cart-badge {
  background-color: var(--cos-secondary-accent);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--cos-radius-full);
  padding: 2px 7px;
}

/* Card components */
.cos-card {
  background-color: var(--cos-surface-lowest);
  border: 1px solid var(--cos-outline-variant);
  border-radius: var(--cos-radius-default);
  padding: var(--cos-space-md);
  box-shadow: var(--cos-shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cos-card:hover {
  box-shadow: var(--cos-shadow-md);
}

/* Button styles */
.cos-btn-primary {
  background-color: var(--cos-primary);
  color: #ffffff;
  border: none;
  border-radius: var(--cos-radius-default);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 0.2s ease;
}

.cos-btn-primary:hover {
  background-color: var(--cos-primary-dark);
  color: #ffffff;
}

.cos-btn-secondary {
  background-color: transparent;
  color: var(--cos-primary);
  border: 1px solid var(--cos-primary);
  border-radius: var(--cos-radius-default);
  padding: 9px 19px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background-color 0.2s ease;
}

.cos-btn-secondary:hover {
  background-color: var(--cos-surface-low);
}

/* Badge styles */
.cos-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--cos-radius-full);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.cos-badge-primary {
  background-color: var(--cos-primary-fixed);
  color: var(--cos-primary-dark);
}

.cos-badge-secondary {
  background-color: #ffdcc3;
  color: var(--cos-secondary);
}

.cos-badge-neutral {
  background-color: var(--cos-surface-container);
  color: var(--cos-on-surface);
}

/* Footer */
.cos-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--cos-outline-variant);
  padding-top: var(--cos-space-xl);
  padding-bottom: var(--cos-space-lg);
  margin-top: var(--cos-space-xl);
}

.cos-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--cos-space-lg);
  margin-bottom: var(--cos-space-xl);
}

.cos-footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--cos-primary);
}

.cos-footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cos-footer-links li {
  margin-bottom: 10px;
}

.cos-footer-links a {
  text-decoration: none;
  color: var(--cos-on-surface-variant);
  font-size: 14px;
  transition: color 0.2s ease;
}

.cos-footer-links a:hover {
  color: var(--cos-primary);
}

.cos-footer-bottom {
  border-top: 1px solid var(--cos-surface-container);
  padding-top: var(--cos-space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--cos-outline);
}

/* Responsive utilities */
@media (max-width: 992px) {
  .cos-footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .cos-search-bar {
    display: none;
  }
}

@media (max-width: 600px) {
  .cos-footer-grid {
    grid-template-columns: 1fr;
  }
  .cos-footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ==========================================================================
   Header Delivery Attention Pulse
   ========================================================================== */
@keyframes deliveryPulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.65;
  }
}

.animate-delivery-pulse {
  animation: deliveryPulse 2.5s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .animate-delivery-pulse {
    animation: none !important;
  }
}

/* ==========================================================================
   Homepage Product Shelf - Exactly 7 cards per row at desktop (xl >= 1280px)
   ========================================================================== */
.shelf-card-item {
  flex: 0 0 148px;
  width: 148px;
  max-width: 148px;
}

@media (min-width: 640px) {
  .shelf-card-item {
    flex: 0 0 160px;
    width: 160px;
    max-width: 160px;
  }
}

@media (min-width: 768px) {
  .shelf-card-item {
    flex: 0 0 170px;
    width: 170px;
    max-width: 170px;
  }
}

@media (min-width: 1024px) {
  .shelf-card-item {
    flex: 0 0 178px;
    width: 178px;
    max-width: 178px;
  }
}

@media (min-width: 1280px) {
  .shelf-card-item {
    flex: 0 0 calc((100% - 72px) / 7);
    width: calc((100% - 72px) / 7);
    max-width: calc((100% - 72px) / 7);
  }
}