/* ========================================
   InstaPep - Futuristic E-commerce Theme
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #00f0ff;
    --primary-dark: #00b8c4;
    --secondary: #7b2cbf;
    --accent: #ff006e;
    --success: #00ff88;
    --warning: #ffd60a;
    
    /* Background Colors */
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: rgba(20, 20, 35, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #7b2cbf 100%);
    --gradient-secondary: linear-gradient(135deg, #7b2cbf 0%, #ff006e 100%);
    --gradient-dark: linear-gradient(180deg, rgba(10,10,15,0) 0%, #0a0a0f 100%);
    
    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-glow: rgba(0, 240, 255, 0.3);
    
    /* Spacing */
    --container-width: 1280px;
    --section-padding: 100px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 50px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(50px); }
}

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 15s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.5; }
    90% { opacity: 0.5; }
    100% { transform: translateY(-100vh) scale(1); opacity: 0; }
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Orbitron', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--radius-full);
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 240, 255, 0.3);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.header.scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 15, 0.95);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    font-size: 28px;
    color: var(--primary);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.logo-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-text .accent {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.search-box {
    position: relative;
}

.search-box input {
    width: 200px;
    padding: 10px 40px 10px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition-normal);
}

.search-box input:focus {
    width: 250px;
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.1);
}

.search-box input::placeholder {
    color: var(--text-muted);
}

.search-box i {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.icon-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.icon-btn:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--primary);
    color: var(--primary);
}

.cart-btn {
    position: relative;
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    border-radius: 50%;
    font-size: 10px;
    font-weight: 600;
    color: white;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-badge .pulse {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(36px, 5vw, 56px);
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
}

/* Hero Visual - Molecule Animation */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.molecule-container {
    width: 400px;
    height: 400px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.molecule {
    position: relative;
    width: 300px;
    height: 300px;
    animation: rotate3d 20s linear infinite;
}

@keyframes rotate3d {
    0% { transform: rotateY(0deg) rotateX(10deg); }
    100% { transform: rotateY(360deg) rotateX(10deg); }
}

.atom {
    position: absolute;
    border-radius: 50%;
    box-shadow: 0 0 30px currentColor;
}

.atom-1 {
    width: 60px;
    height: 60px;
    background: var(--primary);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.atom-2 {
    width: 40px;
    height: 40px;
    background: var(--secondary);
    top: 20%;
    left: 20%;
}

.atom-3 {
    width: 40px;
    height: 40px;
    background: var(--accent);
    top: 20%;
    right: 20%;
}

.atom-4 {
    width: 35px;
    height: 35px;
    background: var(--success);
    bottom: 20%;
    left: 30%;
}

.atom-5 {
    width: 35px;
    height: 35px;
    background: var(--warning);
    bottom: 25%;
    right: 25%;
}

.bond {
    position: absolute;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    transform-origin: left center;
}

.bond-1 {
    width: 80px;
    top: 50%;
    left: 50%;
    transform: translate(20px, -50%) rotate(-45deg);
}

.bond-2 {
    width: 80px;
    top: 50%;
    left: 50%;
    transform: translate(20px, -50%) rotate(45deg);
}

.bond-3 {
    width: 70px;
    top: 50%;
    left: 50%;
    transform: translate(20px, -50%) rotate(135deg);
}

.bond-4 {
    width: 70px;
    top: 50%;
    left: 50%;
    transform: translate(20px, -50%) rotate(-135deg);
}

/* Features Banner */
.features-banner {
    background: var(--bg-glass);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    overflow: hidden;
}

.features-scroll {
    display: flex;
    align-items: center;
    gap: 60px;
    animation: scroll 20s linear infinite;
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
    color: var(--text-secondary);
    font-size: 14px;
}

.feature-item i {
    color: var(--primary);
    font-size: 18px;
}

/* Section Styles */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 16px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
}

/* Categories Section */
.categories {
    padding: var(--section-padding) 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-decoration: none;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.category-card:hover::before {
    transform: scaleX(1);
}

.category-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.1);
}

.category-card.featured {
    background: linear-gradient(135deg, rgba(123, 44, 191, 0.2), rgba(0, 240, 255, 0.1));
}

.category-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    font-size: 28px;
    color: var(--primary);
}

.category-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.category-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
}

.category-link i {
    transition: transform var(--transition-fast);
}

.category-card:hover .category-link i {
    transform: translateX(5px);
}

/* Products Section */
.products-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 240, 255, 0.02) 50%, transparent 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.1);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 12px;
    background: var(--primary);
    color: var(--bg-dark);
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-full);
    z-index: 10;
}

.product-badge.new {
    background: var(--accent);
    color: white;
}

.product-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(0, 240, 255, 0.05) 0%, transparent 100%);
    padding: 20px;
}

/* Vial Illustration */
.vial-illustration {
    perspective: 500px;
}

.vial {
    position: relative;
    width: 40px;
    height: 100px;
    animation: floatVial 3s ease-in-out infinite;
}

.vial.small {
    width: 30px;
    height: 80px;
}

@keyframes floatVial {
    0%, 100% { transform: translateY(0) rotateY(0); }
    50% { transform: translateY(-10px) rotateY(10deg); }
}

.vial-cap {
    width: 100%;
    height: 15px;
    background: linear-gradient(180deg, #666 0%, #333 100%);
    border-radius: 4px 4px 0 0;
}

.vial-body {
    width: 100%;
    height: calc(100% - 15px);
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top: none;
    border-radius: 0 0 8px 8px;
    overflow: hidden;
    position: relative;
}

.vial-liquid {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60%;
    background: linear-gradient(180deg, rgba(0, 240, 255, 0.6) 0%, rgba(0, 240, 255, 0.9) 100%);
    animation: liquidWave 2s ease-in-out infinite;
}

.vial-liquid.blue {
    background: linear-gradient(180deg, rgba(0, 150, 255, 0.6) 0%, rgba(0, 150, 255, 0.9) 100%);
}

.vial-liquid.purple {
    background: linear-gradient(180deg, rgba(123, 44, 191, 0.6) 0%, rgba(123, 44, 191, 0.9) 100%);
}

.vial-liquid.green {
    background: linear-gradient(180deg, rgba(0, 255, 136, 0.6) 0%, rgba(0, 255, 136, 0.9) 100%);
}

@keyframes liquidWave {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(2px); }
}

.product-info {
    padding: 20px;
}

.product-category {
    font-size: 11px;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-name {
    font-size: 16px;
    margin: 8px 0;
    color: var(--text-primary);
}

.product-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.product-price {
    font-family: 'Orbitron', sans-serif;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

.add-to-cart {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    color: var(--bg-dark);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.add-to-cart:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 20px rgba(0, 240, 255, 0.4);
}

.products-cta {
    text-align: center;
    margin-top: 48px;
}

/* Why Choose Us Section */
.why-us {
    padding: var(--section-padding) 0;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
}

.why-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    margin: 0 auto 24px;
    font-size: 32px;
    color: var(--primary);
}

.why-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.why-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* Newsletter Section */
.newsletter {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(123, 44, 191, 0.1) 50%, transparent 100%);
}

.newsletter-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 60px;
}

.newsletter-text h2 {
    font-size: 32px;
    margin-bottom: 12px;
}

.newsletter-text p {
    color: var(--text-secondary);
}

.newsletter-form {
    display: flex;
    gap: 12px;
}

.newsletter-form input {
    width: 300px;
    padding: 14px 24px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition-normal);
}

.newsletter-form input:focus {
    border-color: var(--primary);
}

.newsletter-form input::placeholder {
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin: 20px 0;
    font-size: 14px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--bg-dark);
}

.footer-links h4 {
    font-size: 14px;
    margin-bottom: 24px;
    color: var(--text-primary);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

.footer-bottom .disclaimer {
    margin-top: 8px;
    font-size: 12px;
}

/* ========================================
   Responsive Design — Comprehensive Mobile
   ======================================== */

/* ── Tablet  (≤ 1024px) ── */
@media (max-width: 1024px) {
    :root {
        --section-padding: 70px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 2;
    }

    .hero-visual {
        order: 1;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-stats {
        justify-content: center;
    }

    .category-grid {
        grid-template-columns: 1fr 1fr;
    }

    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .newsletter-content {
        flex-direction: column;
        text-align: center;
        padding: 40px 30px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .molecule-container {
        width: 300px;
        height: 300px;
    }
}

/* ── Phone / Small tablet  (≤ 768px) ── */
@media (max-width: 768px) {
    :root {
        --section-padding: 50px;
    }

    /* Header */
    .header {
        padding: 14px 0;
    }
    .header.scrolled {
        padding: 10px 0;
    }
    .nav {
        gap: 16px;
    }
    .logo-text {
        font-size: 20px;
    }
    .nav-actions {
        gap: 10px;
    }
    .icon-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    .cart-count {
        width: 16px;
        height: 16px;
        font-size: 9px;
    }

    /* Mobile nav menu */
    .nav-links,
    .search-box {
        display: none;
    }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(10,10,15,.97);
        border-bottom: 1px solid rgba(0,240,255,.15);
        padding: 20px 24px;
        gap: 8px;
        z-index: 999;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        animation: menuSlide .3s ease;
    }
    @keyframes menuSlide {
        from { opacity: 0; transform: translateY(-10px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .nav-links.active .nav-link {
        padding: 12px 0;
        font-size: 1rem;
        border-bottom: 1px solid rgba(255,255,255,.06);
    }
    .mobile-menu-btn {
        display: flex;
    }
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding: 110px 0 50px;
    }
    .hero .container {
        gap: 30px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .hero-stats {
        gap: 24px;
    }
    .stat-number {
        font-size: 24px;
    }
    .molecule-container {
        width: 220px;
        height: 220px;
    }

    /* Page headers */
    .page-header {
        padding: 110px 0 40px;
    }
    .page-header p {
        font-size: 15px;
    }
    .breadcrumb {
        font-size: 12px;
    }

    /* Sections */
    .section-header {
        margin-bottom: 36px;
    }
    .section-subtitle {
        font-size: 14px;
    }

    /* Grids */
    .category-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .category-card {
        padding: 28px 20px;
    }
    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 14px;
    }
    .product-image {
        height: 150px;
    }
    .product-info {
        padding: 14px;
    }
    .product-name {
        font-size: 14px;
    }
    .product-price {
        font-size: 16px;
    }
    .product-desc {
        font-size: 12px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .why-card {
        padding: 28px 20px;
    }

    /* Newsletter */
    .newsletter-content {
        padding: 30px 20px;
    }
    .newsletter-text h2 {
        font-size: 24px;
    }
    .newsletter-form {
        flex-direction: column;
        width: 100%;
    }
    .newsletter-form input {
        width: 100%;
    }

    /* Features banner */
    .features-scroll {
        gap: 32px;
    }
    .feature-item {
        font-size: 12px;
    }

    /* Footer */
    .footer {
        padding: 50px 0 30px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }
    .footer-grid > div:first-child {
        margin-bottom: 10px;
    }
    .social-links {
        justify-content: center;
    }

    /* Buttons */
    .btn {
        padding: 12px 22px;
        font-size: 13px;
    }
}

/* ── Small phone  (≤ 480px) ── */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    /* Hero */
    .hero-buttons {
        flex-direction: column;
        gap: 12px;
        width: 100%;
    }
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    /* Products */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* Newsletter */
    .newsletter-content {
        padding: 24px 16px;
    }
    .newsletter-text h2 {
        font-size: 20px;
    }

    /* Category cards */
    .category-icon {
        width: 56px;
        height: 56px;
        font-size: 22px;
    }
    .category-card h3 {
        font-size: 17px;
    }

    /* Footer */
    .footer-links h4 {
        font-size: 13px;
        margin-bottom: 16px;
    }
}

/* Page Specific Styles */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, rgba(0, 240, 255, 0.05) 0%, transparent 100%);
}

.page-header h1 {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 16px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 18px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
    font-size: 14px;
}

.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.breadcrumb span {
    color: var(--text-secondary);
}

/* ========================================
   Bundles Page Styles
   ======================================== */

.bundles-section {
    padding: 60px 0 var(--section-padding);
}

.bundles-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.bundle-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    position: relative;
    transition: all var(--transition-normal);
}

.bundle-card:hover {
    border-color: var(--border-glow);
    box-shadow: 0 20px 60px rgba(0, 240, 255, 0.1);
}

.bundle-badge {
    position: absolute;
    top: -12px;
    left: 30px;
    padding: 6px 16px;
    background: var(--gradient-primary);
    color: var(--bg-dark);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.bundle-badge.popular {
    background: var(--gradient-secondary);
    color: white;
}

.bundle-badge.new {
    background: var(--accent);
    color: white;
}

.bundle-header {
    margin-bottom: 24px;
}

.bundle-header h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.bundle-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.bundle-items {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.bundle-items.stacked {
    justify-content: flex-start;
}

.bundle-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.item-vial {
    width: 24px;
    height: 50px;
    background: rgba(0, 240, 255, 0.3);
    border: 2px solid rgba(0, 240, 255, 0.5);
    border-radius: 0 0 6px 6px;
    position: relative;
}

.item-vial::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 8px;
    background: #666;
    border-radius: 2px 2px 0 0;
}

.item-vial.cyan { background: rgba(0, 240, 255, 0.3); border-color: rgba(0, 240, 255, 0.5); }
.item-vial.blue { background: rgba(0, 150, 255, 0.3); border-color: rgba(0, 150, 255, 0.5); }
.item-vial.purple { background: rgba(123, 44, 191, 0.3); border-color: rgba(123, 44, 191, 0.5); }
.item-vial.green { background: rgba(0, 255, 136, 0.3); border-color: rgba(0, 255, 136, 0.5); }
.item-vial.small { height: 40px; width: 20px; }

.item-info {
    display: flex;
    flex-direction: column;
}

.item-name {
    font-size: 14px;
    font-weight: 500;
}

.item-price, .item-qty {
    font-size: 12px;
    color: var(--text-muted);
}

.bundle-plus {
    font-size: 24px;
    color: var(--primary);
    font-weight: 600;
}

.bundle-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.bundle-pricing {
    display: flex;
    flex-direction: column;
}

.original-price {
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: line-through;
}

.bundle-price {
    font-family: 'Orbitron', sans-serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.savings {
    font-size: 12px;
    color: var(--success);
    font-weight: 500;
}

.bundle-info {
    padding: 0 0 var(--section-padding);
}

.info-card {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px;
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: var(--radius-lg);
}

.info-icon {
    font-size: 24px;
    color: var(--primary);
}

.info-content h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.info-content p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========================================
   Filter Bar Styles
   ======================================== */

.filter-section {
    padding: 0 0 40px;
}

.filter-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.filter-group {
    display: flex;
    gap: 8px;
}

.filter-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--bg-dark);
}

.sort-select {
    padding: 10px 20px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    outline: none;
}

.sort-select option {
    background: var(--bg-dark);
}

.products-page {
    padding: 0 0 var(--section-padding);
}

/* ========================================
   About Page Styles
   ======================================== */

.about-content {
    padding: 60px 0 var(--section-padding);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 32px;
    margin-bottom: 24px;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
}

.about-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.about-feature i {
    font-size: 24px;
    color: var(--primary);
}

.about-feature h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.about-feature p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.stats-card {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.stat-item {
    text-align: center;
    padding: 24px;
    background: var(--bg-glass);
    border-radius: var(--radius-md);
}

.stat-item .stat-number {
    display: block;
    font-family: 'Orbitron', sans-serif;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-item .stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

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

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.value-card {
    text-align: center;
    padding: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.value-card:hover {
    border-color: var(--border-glow);
}

.value-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    margin: 0 auto 24px;
    font-size: 32px;
    color: var(--primary);
}

.value-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
}

.value-card p {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ========================================
   Blog Page Styles
   ======================================== */

.blog-section {
    padding: 60px 0 var(--section-padding);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
}

.blog-image {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(123, 44, 191, 0.1));
}

.blog-icon {
    font-size: 48px;
    color: var(--primary);
    opacity: 0.5;
}

.blog-content {
    padding: 24px;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 12px;
}

.blog-date {
    color: var(--text-muted);
}

.blog-date i {
    margin-right: 6px;
}

.blog-category {
    padding: 4px 10px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--primary);
}

.blog-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.blog-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.blog-link i {
    transition: transform var(--transition-fast);
}

.blog-card:hover .blog-link i {
    transform: translateX(5px);
}

/* ========================================
   Lab Supplies Icon
   ======================================== */

.supply-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-size: 32px;
    color: var(--primary);
}

/* ========================================
   Responsive Updates — Page-Specific
   ======================================== */

@media (max-width: 1024px) {
    .bundles-grid {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .filter-bar {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }
    
    .filter-group {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .filter-btn {
        padding: 8px 14px;
        font-size: 13px;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .bundle-items {
        flex-direction: column;
    }
    
    .bundle-footer {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .bundle-card {
        padding: 24px 20px;
    }

    .about-text h2 {
        font-size: 24px;
    }

    .stats-card {
        padding: 24px;
        gap: 16px;
    }
    .stat-item .stat-number {
        font-size: 28px;
    }

    .value-card {
        padding: 28px 20px;
    }
    .value-icon {
        width: 64px;
        height: 64px;
        font-size: 26px;
    }

    .blog-image {
        height: 130px;
    }
    .blog-content {
        padding: 18px;
    }
    .blog-card h3 {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .bundle-item {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    .bundle-price {
        font-size: 22px;
    }
    .about-feature {
        flex-direction: column;
        text-align: center;
    }
}

/* ========================================
   Category Sections - Peptides Page
   ======================================== */

.category-section {
    margin-bottom: 80px;
}

.category-section:last-child {
    margin-bottom: 0;
}

.category-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 40px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ── Cookie Consent Banner ── */
.cookie-banner {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: rgba(10,10,15,.97);
    border-top: 1px solid rgba(0,240,255,.2);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px 24px;
    z-index: 10000;
    transform: translateY(100%);
    transition: transform .4s ease;
}
.cookie-banner.show {
    transform: translateY(0);
}
.cookie-inner {
    max-width: 1200px; margin: 0 auto;
    display: flex; align-items: center;
    justify-content: space-between; gap: 20px;
    flex-wrap: wrap;
}
.cookie-inner p {
    color: rgba(255,255,255,.7);
    font-size: .88rem; line-height: 1.6;
    flex: 1; min-width: 280px;
}
.cookie-inner p a {
    color: #00f0ff; text-decoration: none;
}
.cookie-inner p a:hover { text-decoration: underline; }
.cookie-btns { display: flex; gap: 10px; }
.cookie-btns button {
    padding: 10px 24px; border-radius: 10px;
    font-family: 'Inter', sans-serif;
    font-size: .85rem; font-weight: 600;
    cursor: pointer; transition: all .3s ease; border: none;
}
.cookie-accept {
    background: linear-gradient(135deg, #00f0ff, #7c3aed);
    color: #0a0a0f;
}
.cookie-accept:hover { box-shadow: 0 4px 20px rgba(0,240,255,.3); }
.cookie-decline {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.15) !important;
    color: rgba(255,255,255,.6);
}
.cookie-decline:hover { background: rgba(255,255,255,.1); }
@media (max-width: 600px) {
    .cookie-inner { flex-direction: column; text-align: center; }
    .cookie-btns { width: 100%; justify-content: center; }
}

.category-title .emoji {
    font-size: 1.5rem;
}

.category-section .products-grid {
    margin-top: 30px;
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 24px; }
.mb-4 { margin-bottom: 24px; }