:root {
    --bg-main: #f4f6f8;
    --bg-card: #ffffff;
    --text-dark: #111827;
    --text-muted: #6b7280;
    --accent-primary: #4f46e5; 
    --accent-hover: #4338ca;
    --dark-btn: #1f2937;
    --dark-hover: #111827;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { background-color: var(--bg-main); color: var(--text-dark); -webkit-font-smoothing: antialiased; }

/* Primary Navigation UI */
.navbar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; padding: 15px 5%; background-color: rgba(255, 255, 255, 0.85); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.logo { display: flex; align-items: center; gap: 10px; cursor: pointer; font-size: 1.6rem; font-weight: 800; letter-spacing: -0.5px; color: var(--accent-primary);}

/* Cart State Management */
.cart-wrapper { margin-left: auto; order: 2; padding-left: 15px; }
.cart-icon { position: relative; cursor: pointer; padding: 8px; border-radius: 50%; background: #f3f4f6; transition: var(--transition-smooth); }
.cart-icon:hover { background: #e5e7eb; transform: scale(1.05); }
#cart-count { position: absolute; top: -5px; right: -5px; background-color: #ef4444; color: white; font-size: 0.75rem; font-weight: bold; padding: 3px 7px; border-radius: 12px; border: 2px solid white; animation: pop 0.3s ease-out; }
@keyframes pop { 0% { transform: scale(0.5); } 100% { transform: scale(1); } }

/* Dynamic Search Interface */
.search-wrapper { width: 100%; margin-top: 15px; order: 3; position: relative; }
.search-box { display: flex; align-items: center; background-color: #f3f4f6; border-radius: 12px; padding: 12px 16px; transition: var(--transition-smooth); border: 2px solid transparent; }
.search-box input { border: none; background: transparent; outline: none; width: 100%; font-size: 1.05rem; color: var(--text-dark); }
.search-box:focus-within { background-color: #ffffff; border-color: var(--accent-primary); box-shadow: 0 4px 15px rgba(79, 70, 229, 0.15); }

/* Active Search Dropdown */
.search-suggestions { position: absolute; top: 100%; left: 0; right: 0; background: rgba(255,255,255,0.95); backdrop-filter: blur(20px); border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); margin-top: 8px; overflow: hidden; display: none; z-index: 1001; border: 1px solid rgba(0,0,0,0.05); }
.search-suggestion-item { padding: 12px 16px; display: flex; align-items: center; gap: 12px; cursor: pointer; border-bottom: 1px solid rgba(0,0,0,0.03); transition: var(--transition-smooth); }
.search-suggestion-item:hover { background: #f8f9fa; padding-left: 20px; }

@media (min-width: 768px) {
    .navbar { flex-wrap: nowrap; padding: 15px 5%; }
    .search-wrapper { flex: 1; margin: 0 40px; order: 2; margin-top: 0; max-width: 700px; }
    .cart-wrapper { order: 3; }
}

/* Landing Section */
.hero { background: linear-gradient(135deg, #111827 0%, #1f2937 100%); color: white; padding: 60px 5%; text-align: center; border-radius: 0 0 24px 24px; box-shadow: 0 10px 30px rgba(0,0,0,0.1); animation: slideDown 0.6s ease-out;}
.hero h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); font-weight: 800; margin-bottom: 15px; background: linear-gradient(to right, #ffffff, #c7d2fe); -webkit-background-clip: text; -webkit-text-fill-color: transparent; letter-spacing: -1px;}
.hero p { color: #9ca3af; font-size: 1.15rem; max-width: 700px; margin: 0 auto; line-height: 1.6; font-weight: 400;}
@keyframes slideDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }

/* Filter Navigation */
.filter-container { display: flex; gap: 12px; justify-content: center; padding: 25px 5% 10px; overflow-x: auto; scrollbar-width: none; }
.filter-container::-webkit-scrollbar { display: none; }
.filter-chip { padding: 8px 22px; background: white; border: 1px solid #e5e7eb; border-radius: 20px; cursor: pointer; font-weight: 600; font-size: 0.95rem; color: var(--text-muted); transition: var(--transition-smooth); white-space: nowrap; box-shadow: 0 2px 5px rgba(0,0,0,0.02);}
.filter-chip.active { background: var(--text-dark); color: white; border-color: var(--text-dark); box-shadow: 0 4px 10px rgba(0,0,0,0.15); }
.filter-chip:hover:not(.active) { background: #f3f4f6; color: var(--text-dark); }

/* Grid Components */
.product-area { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; padding: 20px 5% 50px; }
@media (min-width: 768px) { .product-area { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px; } }

.product-card { background: var(--bg-card); border-radius: 16px; padding: 20px; display: flex; flex-direction: column; cursor: pointer; border: 1px solid rgba(0,0,0,0.03); box-shadow: 0 4px 6px rgba(0,0,0,0.02); transition: var(--transition-smooth); }
.product-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0,0,0,0.08); border-color: rgba(79, 70, 229, 0.2); }
.product-image { width: 100%; height: 180px; object-fit: contain; margin-bottom: 15px; border-radius: 8px; transition: transform 0.4s ease; }
.product-card:hover .product-image { transform: scale(1.05); }
.product-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 8px; color: var(--text-dark); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-price { font-size: 1.5rem; font-weight: 800; margin-bottom: 15px; color: var(--text-dark); }
.fallback-img { display: flex; align-items: center; justify-content: center; background: #f3f4f6; color: #9ca3af; font-size: 4rem; font-weight: 800; text-transform: uppercase; width: 100%; height: 180px; border-radius: 8px; margin-bottom: 15px; }

/* Interactive Controls */
.btn-primary { background: linear-gradient(135deg, var(--accent-primary), var(--accent-hover)); color: white; border: none; border-radius: 10px; padding: 12px; font-weight: 600; font-size: 1rem; width: 100%; cursor: pointer; margin-bottom: 10px; transition: var(--transition-smooth); box-shadow: 0 4px 12px rgba(79, 70, 229, 0.2); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 15px rgba(79, 70, 229, 0.4); }
.btn-secondary { background: var(--dark-btn); color: white; border: none; border-radius: 10px; padding: 12px; font-weight: 600; font-size: 1rem; width: 100%; cursor: pointer; transition: var(--transition-smooth); }
.btn-secondary:hover { background: var(--dark-hover); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(0,0,0,0.2); }
.btn-success { background: #10b981; color: white; border: none; border-radius: 10px; padding: 12px; font-weight: 600; font-size: 1rem; width: 100%; cursor: pointer; margin-bottom: 10px; transition: var(--transition-smooth); box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2); }

/* View Management Architecture */
.view-section { display: none; opacity: 0; transition: opacity 0.3s ease; }
.view-section.active { display: block; opacity: 1; animation: fadeInView 0.4s forwards; }
@keyframes fadeInView { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }
.detail-grid { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 20px 5%; max-width: 1200px; margin: 0 auto; background: var(--bg-card); border-radius: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.03); margin-top: 20px;}
@media (min-width: 768px) { .detail-grid { grid-template-columns: 1fr 1fr; } }
.cart-container { max-width: 900px; margin: 0 auto; padding: 20px 5%; }
.cart-item { display: flex; align-items: center; justify-content: space-between; background: white; padding: 20px; border-radius: 16px; margin-bottom: 15px; border: 1px solid rgba(0,0,0,0.04); }
.qty-btn { background: #f3f4f6; border: none; padding: 6px 14px; border-radius: 8px; font-size: 1.2rem; font-weight: bold; cursor: pointer; }