/* Accufine Life Sciences - Modern Responsive Mobile-First CSS System */

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-main);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease, opacity 0.2s ease;
}
a:hover {
    color: var(--color-primary-hover);
}

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

/* Layout & Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* Header & Navigation */
.site-header {
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(16px);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: -0.02em;
}
.brand-logo img {
    height: 38px;
    width: auto;
}
.logo-icon-svg {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 1.2rem;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.4);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}
.nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}
.nav-link:hover, .nav-link.active {
    color: var(--text-main);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.btn-icon {
    position: relative;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s ease;
}
.btn-icon:hover {
    background: var(--bg-card-hover);
}
.badge-count {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--color-accent);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.mobile-nav-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.4rem;
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 5rem 0 4rem;
    background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.15), transparent 40%),
                radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.12), transparent 40%);
    border-bottom: 1px solid var(--border-color);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(14, 165, 233, 0.12);
    border: 1px solid rgba(14, 165, 233, 0.3);
    color: var(--color-primary);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.hero-title {
    font-size: 3rem;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
    background: linear-gradient(135deg, var(--text-main) 60%, var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    max-width: 620px;
}
.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.hero-visual {
    position: relative;
}
.hero-card-preview {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(12px);
    position: relative;
    overflow: hidden;
}
.hero-card-preview img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    border-radius: 16px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.6rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    text-decoration: none;
}
.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #0284c7);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    color: #ffffff;
}
.btn-accent {
    background: linear-gradient(135deg, var(--color-accent), #059669);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.35);
}
.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
    color: #ffffff;
}
.btn-outline {
    background: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}
.btn-outline:hover {
    background: var(--bg-card-hover);
    border-color: var(--color-primary);
}
.btn-sm {
    padding: 0.45rem 1rem;
    font-size: 0.85rem;
    border-radius: 8px;
}
.btn-block {
    width: 100%;
}

/* Section Layout */
.section {
    padding: 4rem 0;
}
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 2.5rem;
}
.section-title {
    font-size: 2rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.4rem;
}
.section-desc {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Cards & Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1.5rem;
}
.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    transition: all 0.25 ease;
    display: flex;
    flex-direction: column;
    position: relative;
}
.product-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}
.product-thumb {
    position: relative;
    width: 100%;
    padding-top: 75%;
    background: #0f172a;
    overflow: hidden;
}
.product-thumb img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}
.product-card:hover .product-thumb img {
    transform: scale(1.06);
}
.sale-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: #ef4444;
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    z-index: 2;
}
.product-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}
.product-cat {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: 0.4rem;
}
.product-title {
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-price-section {
    margin-top: auto;
    padding-top: 0.75rem;
    margin-bottom: 0.75rem;
}
.price-container {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    flex-wrap: wrap;
}
.price-main {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--color-primary);
}
.price-old {
    font-size: 0.95rem;
    color: var(--text-muted);
    text-decoration: line-through;
}
.product-card-footer {
    padding: 0 1.25rem 1.25rem;
}
.btn-card-add {
    width: 100%;
    border-radius: 12px;
    padding: 0.65rem 1rem;
    font-weight: 700;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.25rem;
}
.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.category-card:hover {
    border-color: var(--color-primary);
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}
.category-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: rgba(14, 165, 233, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Cart & Checkout UI */
.cart-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
}
.cart-table th, .cart-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.cart-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
}
.qty-input {
    width: 60px;
    padding: 0.4rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-main);
    text-align: center;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 1.75rem;
}
.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px dashed var(--border-color);
}
.summary-row.total {
    border-bottom: none;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    padding-top: 1rem;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-main);
}
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}
textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

/* Footer */
.site-footer {
    background: #070a12;
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
    margin-top: 4rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-col h4 {
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
}
.footer-links {
    list-style: none;
}
.footer-links li {
    margin-bottom: 0.6rem;
}
.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}
.footer-links a:hover {
    color: var(--text-main);
}
.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Mobile Responsive Drawer Navigation */
.mobile-drawer {
    position: fixed;
    top: 0;
    left: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-card);
    z-index: 2000;
    padding: 2rem 1.5rem;
    transition: left 0.3s ease;
    box-shadow: var(--shadow-md);
}
.mobile-drawer.open {
    left: 0;
}
.drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 1999;
    display: none;
}
.drawer-backdrop.active {
    display: block;
}

/* Mobile Responsive Layout Grids */
.catalog-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2rem;
}

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.checkout-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
}

.cart-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    text-align: center;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2.5rem;
}

.form-row-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* Mobile Responsive Adjustments */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-subtitle {
        margin: 0 auto 2rem;
    }
    .hero-buttons {
        justify-content: center;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .catalog-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .product-detail-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
        margin-bottom: 2.5rem;
    }
    .checkout-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .cart-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-nav-toggle {
        display: block;
    }
    .hero-title {
        font-size: 2.1rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 1rem;
    }
    .product-body {
        padding: 0.9rem;
    }
    .product-title {
        font-size: 0.95rem;
    }
    .price-main {
        font-size: 1.1rem;
    }
    .highlights-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .form-row-2col {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .contact-card-padding {
        padding: 1.25rem !important;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.85rem;
    }
    .hero-section {
        padding: 3rem 0 2.5rem;
    }
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
}