/* ===== OK MART - PRODUCT DETAIL STYLES ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #2ecc71;
  --primary-dark: #27ae60;
  --primary-light: #e8f8ef;
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #1a1e2b;
  --muted: #6b7280;
  --border: #e5e7eb;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.04);
  --shadow-md: 0 8px 24px rgba(0,0,0,.06);
  --radius: 16px;
  --transition: all .2s cubic-bezier(.4,0,.2,1);
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.app-container { max-width: 480px; margin: 0 auto; position: relative; min-height: 100vh; }

/* ===== HEADER ===== */
.product-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.95); backdrop-filter: blur(10px);
  padding: 8px 14px; border-bottom: 1px solid var(--border);
}

.header-inner { display: flex; align-items: center; justify-content: space-between; }
.header-title { font-size: 1rem; font-weight: 700; flex: 1; text-align: center; }

.back-btn, .header-wishlist-btn, .header-share-btn, .cart-btn {
  width: 38px; height: 38px; border-radius: 50%; background: var(--bg);
  border: none; display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 1.1rem; text-decoration: none; transition: var(--transition);
  position: relative;
}

.back-btn { font-size: 1.3rem; font-weight: 600; color: var(--text); }
.back-btn:active { background: var(--border); transform: scale(.92); }

.header-actions { display: flex; align-items: center; gap: 6px; }

.cart-badge {
  position: absolute; top: -3px; right: -3px;
  background: var(--primary); color: white; font-size: .55rem; font-weight: 700;
  min-width: 16px; height: 16px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid white;
}

/* ===== LOADING ===== */
.loading-state {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; padding: 100px 20px; color: var(--muted);
}
.spinner {
  width: 48px; height: 48px; border: 4px solid var(--border);
  border-top-color: var(--primary); border-radius: 50%;
  animation: spin .8s linear infinite; margin-bottom: 16px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== PRODUCT IMAGE ===== */
.product-image-container {
  position: relative; margin-bottom: 20px;
}
.product-image-main {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border-radius: 0 0 24px 24px; background: #f1f5f9;
  animation: fadeIn .4s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.image-badges {
  position: absolute; bottom: 12px; left: 12px; right: 12px;
  display: flex; justify-content: space-between;
}
.delivery-badge, .stock-badge {
  background: white; padding: 6px 14px; border-radius: 30px;
  font-size: .7rem; font-weight: 600; box-shadow: var(--shadow-md);
}
.stock-badge { background: var(--primary); color: white; }

/* ===== PRODUCT INFO ===== */
.product-info-section { padding: 0 16px; }

.product-title { font-size: 1.5rem; font-weight: 800; margin-bottom: 4px; line-height: 1.3; }
.product-unit { font-size: .9rem; color: var(--muted); display: block; margin-bottom: 12px; }

/* Rating */
.rating-row {
  display: flex; align-items: center; gap: 8px; margin-bottom: 16px;
}
.stars { color: #fbbf24; font-size: 1rem; letter-spacing: 2px; }
.rating-value { font-weight: 700; }
.rating-count { color: var(--muted); font-size: .8rem; }

/* Price */
.price-section {
  display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px;
}
.price-main { display: flex; align-items: baseline; gap: 10px; }
.current-price { font-size: 1.8rem; font-weight: 800; }
.mrp-price { font-size: 1rem; color: var(--muted); text-decoration: line-through; }
.discount-badge-large {
  background: #fee2e2; color: #dc2626; padding: 6px 14px;
  border-radius: 20px; font-weight: 700; font-size: .9rem;
}

.savings-info { color: #10b981; font-weight: 600; font-size: .85rem; margin-bottom: 20px; }

/* Quantity */
.quantity-section {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 0; border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border); margin-bottom: 20px;
}
.quantity-label { font-weight: 700; font-size: 1rem; }
.quantity-controls {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg); padding: 6px; border-radius: 40px;
}
.qty-btn {
  width: 44px; height: 44px; border-radius: 50%; background: white;
  border: 1.5px solid var(--border); font-size: 1.5rem; font-weight: 600;
  color: var(--primary); cursor: pointer; display: flex;
  align-items: center; justify-content: center; transition: var(--transition);
}
.qty-btn:active { background: var(--primary); color: white; }
.qty-number { min-width: 40px; text-align: center; font-weight: 700; font-size: 1.2rem; }

/* Add to Cart Button */
.add-to-cart-btn {
  width: 100%; padding: 18px 24px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white; border: none; border-radius: 60px;
  font-weight: 700; font-size: 1.2rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  margin-bottom: 20px; box-shadow: 0 8px 20px rgba(46,204,113,.3);
  transition: var(--transition);
}
.add-to-cart-btn:active { transform: scale(.97); box-shadow: 0 4px 12px rgba(46,204,113,.2); }
.btn-icon { font-size: 1.4rem; }
.btn-price { font-weight: 600; opacity: .95; }

/* Delivery Info */
.delivery-info-cards { display: flex; gap: 10px; margin-bottom: 20px; }
.delivery-card {
  flex: 1; display: flex; align-items: center; gap: 8px;
  background: var(--card); padding: 12px; border-radius: var(--radius);
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
}
.delivery-card span { font-size: 1.3rem; }
.delivery-card strong { font-size: .8rem; display: block; }
.delivery-card p { font-size: .7rem; color: var(--muted); }

/* Guarantee */
.guarantee-section {
  display: flex; gap: 16px; padding: 16px 0;
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.guarantee-item { display: flex; align-items: center; gap: 4px; font-size: .8rem; color: var(--muted); }
.guarantee-item span { color: var(--primary); font-weight: 700; }

/* Description */
.description-section { margin-bottom: 20px; }
.description-section h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.description-section p { color: var(--muted); font-size: .9rem; line-height: 1.6; }

/* ===== RELATED SECTION ===== */
.related-section { padding: 20px 0 100px; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 16px; margin-bottom: 14px;
}
.section-header h3 { font-size: 1.1rem; font-weight: 700; }
.view-all { color: var(--primary); font-size: .85rem; font-weight: 600; text-decoration: none; }

.related-slider {
  display: flex; gap: 12px; overflow-x: auto; scrollbar-width: none;
  padding: 4px 16px; -ms-overflow-style: none; scroll-snap-type: x mandatory;
}
.related-slider::-webkit-scrollbar { display: none; }

/* ===== PRODUCT CARD (MINI) ===== */
.product-card {
  background: var(--card); border-radius: var(--radius); padding: 10px;
  box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  flex: 0 0 150px; scroll-snap-align: start;
  position: relative; cursor: pointer; transition: var(--transition);
}
.product-card:active { transform: scale(.98); }
.product-image {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border-radius: 12px; margin-bottom: 8px; background: #f1f5f9;
}
.product-name { font-weight: 700; font-size: .85rem; line-height: 1.3; margin-bottom: 2px; }
.product-unit { font-size: .65rem; color: var(--muted); display: block; margin-bottom: 6px; }
.price-row { display: flex; align-items: center; gap: 6px; margin-bottom: 8px; }
.price-row .current-price { font-weight: 800; font-size: .9rem; }
.price-row .mrp-price { font-size: .65rem; color: var(--muted); text-decoration: line-through; }
.discount-badge { margin-left: auto; background: #fee2e2; color: #dc2626; font-size: .6rem; font-weight: 700; padding: 2px 6px; border-radius: 20px; }
.add-btn {
  width: 100%; padding: 8px; background: var(--primary-light);
  border: 1.5px solid var(--primary); border-radius: 30px;
  color: var(--primary-dark); font-weight: 700; font-size: .7rem;
  text-transform: uppercase; cursor: pointer; transition: var(--transition);
}
.add-btn:active { background: var(--primary); color: white; }
.wishlist-mini, .share-mini {
  position: absolute; top: 6px; background: white;
  border: 1px solid var(--border); border-radius: 50%;
  width: 26px; height: 26px; display: flex; align-items: center;
  justify-content: center; cursor: pointer; font-size: .75rem; z-index: 2;
}
.wishlist-mini { right: 36px; }
.share-mini { right: 6px; }
.product-badge {
  position: absolute; top: 6px; left: 6px;
  background: var(--primary-dark); color: white; padding: 3px 8px;
  border-radius: 20px; font-size: .6rem; font-weight: 600; z-index: 2;
}

/* Loading Skeleton */
.loading-skeleton { display: flex; gap: 12px; padding: 0 16px; }
.skeleton-card {
  width: 150px; height: 200px; background: linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%);
  background-size: 200% 100%; animation: shimmer 1.5s infinite;
  border-radius: var(--radius); flex-shrink: 0;
}
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }

/* ===== ERROR STATE ===== */
.error-state { text-align: center; padding: 80px 20px; }
.error-icon { font-size: 4rem; opacity: .5; display: block; margin-bottom: 16px; }
.error-state h2 { font-size: 1.3rem; margin-bottom: 8px; }
.error-state p { color: var(--muted); margin-bottom: 24px; }
.error-actions { display: flex; flex-direction: column; gap: 12px; align-items: center; }
.browse-btn, .go-back-btn {
  padding: 14px 28px; border-radius: 40px; font-weight: 600;
  text-decoration: none; cursor: pointer; font-size: 1rem;
}
.browse-btn { background: var(--primary); color: white; }
.go-back-btn { background: var(--bg); border: 1.5px solid var(--border); color: var(--text); }

/* ===== STICKY BOTTOM BAR ===== */
.sticky-bottom-bar {
  position: fixed; bottom: 0; left: 50%; transform: translateX(-50%) translateY(100%);
  width: 100%; max-width: 480px; background: var(--card);
  padding: 12px 16px; box-shadow: 0 -4px 20px rgba(0,0,0,.1);
  display: flex; align-items: center; justify-content: space-between;
  z-index: 95; border-top: 1px solid var(--border);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
}
.sticky-bottom-bar.visible { transform: translateX(-50%) translateY(0); }
.sticky-product-name { font-weight: 600; font-size: .9rem; display: block; }
.sticky-product-price { font-weight: 700; color: var(--primary-dark); font-size: .85rem; }
.sticky-add-btn {
  background: var(--primary); color: white; border: none;
  padding: 12px 24px; border-radius: 40px; font-weight: 700;
  font-size: .95rem; cursor: pointer; transition: var(--transition);
}
.sticky-add-btn:active { background: var(--primary-dark); transform: scale(.95); }

/* ===== FLOATING CART BAR ===== */
.floating-cart-bar {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%) translateY(20px);
  width: calc(100% - 28px); max-width: 452px; background: var(--card);
  padding: 12px 16px; border-radius: 16px; box-shadow: 0 -4px 20px rgba(0,0,0,.1);
  z-index: 96; border: 1px solid var(--border);
  opacity: 0; visibility: hidden; transition: all .3s cubic-bezier(.4,0,.2,1);
}
.floating-cart-bar.visible { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.floating-cart-bar.visible ~ .sticky-bottom-bar { transform: translateX(-50%) translateY(100%); }
.cart-bar-inner { display: flex; align-items: center; justify-content: space-between; }
.cart-bar-info { display: flex; align-items: center; gap: 8px; }
.cart-bar-icon { font-size: 1.3rem; }
.cart-bar-count { font-weight: 600; font-size: .9rem; }
.cart-bar-btn {
  background: var(--primary); color: white; padding: 10px 20px;
  border-radius: 30px; font-weight: 700; font-size: .85rem;
  text-decoration: none; transition: var(--transition);
}
.cart-bar-btn:active { background: var(--primary-dark); transform: scale(.96); }

/* ===== TOAST ===== */
.toast-message {
  position: fixed; bottom: 100px; left: 50%; transform: translateX(-50%) translateY(100px);
  padding: 12px 24px; border-radius: 40px; font-weight: 500; z-index: 999;
  opacity: 0; transition: all .3s; white-space: nowrap; pointer-events: none;
}
.toast-message.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ===== RESPONSIVE ===== */
@media (min-width: 500px) {
  .app-container { max-width: 500px; }
}