/* ===== VARIABLES ===== */
:root {
    /* Colors */
    --primary: #8B5CF6;
    --primary-light: #A78BFA;
    --primary-dark: #7C3AED;
    --secondary: #F97316;
    --secondary-light: #FB923C;
    --accent: #06B6D4;

    /* Neutrals */
    --bg-dark: #0A0A0F;
    --bg-card: rgba(15, 15, 25, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --border: rgba(255, 255, 255, 0.1);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-glow: radial-gradient(circle at center, var(--primary) 0%, transparent 70%);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== PARTICLES BACKGROUND ===== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }
    25% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-50px) translateX(-30px);
        opacity: 0.3;
    }
    75% {
        transform: translateY(-150px) translateX(20px);
        opacity: 0.5;
    }
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

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

.nav-links {
    display: flex;
    gap: var(--space-xl);
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

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

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

.nav-links a:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.cart-btn, .user-btn {
    position: relative;
    color: var(--text-secondary);
    padding: var(--space-sm);
    transition: var(--transition-fast);
}

.cart-btn:hover, .user-btn:hover {
    color: var(--text-primary);
}

.cart-count {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 18px;
    height: 18px;
    background: var(--secondary);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.5);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: var(--bg-glass);
}

.btn-full {
    width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--space-3xl)) var(--space-lg) var(--space-3xl);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at top right, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at bottom left, rgba(249, 115, 22, 0.1) 0%, transparent 50%);
    z-index: 0;
}

.hero .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3xl);
    width: 100%;
    max-width: 1200px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: var(--space-lg);
    backdrop-filter: blur(10px);
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(139, 92, 246, 0);
    }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

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

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    z-index: 1;
}

.bottle-container {
    position: relative;
    width: 300px;
    height: 400px;
}

.bottle-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 250px;
    height: 250px;
    background: var(--gradient-glow);
    filter: blur(60px);
    opacity: 0.6;
    animation: glow-pulse 4s infinite ease-in-out;
}

@keyframes glow-pulse {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.8;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.bottle-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
}

.bottle-mockup {
    width: 100px;
    height: 280px;
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.3) 0%, rgba(249, 115, 22, 0.3) 100%);
    border-radius: 20px 20px 30px 30px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.bottle-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0 0 10px 10px;
}

.bottle-liquid {
    position: absolute;
    bottom: 20px;
    left: 10px;
    right: 10px;
    height: 60%;
    background: linear-gradient(180deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 0 0 20px 20px;
    opacity: 0.8;
    animation: liquid-wave 3s infinite ease-in-out;
}

@keyframes liquid-wave {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.bottle-label {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.orbit-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 280px;
    height: 280px;
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 50%;
    animation: orbit-rotate 20s linear infinite;
}

.orbit-ring-2 {
    width: 350px;
    height: 350px;
    border-color: rgba(249, 115, 22, 0.2);
    animation-duration: 30s;
    animation-direction: reverse;
}

@keyframes orbit-rotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.floating-particle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: float-particle 6s infinite ease-in-out;
}

.floating-particle.p1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-particle.p2 {
    top: 70%;
    right: 15%;
    background: var(--secondary);
    animation-delay: 2s;
}

.floating-particle.p3 {
    bottom: 20%;
    left: 20%;
    background: var(--accent);
    width: 6px;
    height: 6px;
    animation-delay: 4s;
}

@keyframes float-particle {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: translateY(-20px) scale(1.2);
        opacity: 1;
    }
}

/* ===== SECTION STYLING ===== */
section {
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--primary-light);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== PRODUCTS SECTION ===== */
.products {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(15, 15, 25, 1) 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

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

.product-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.product-badge {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    z-index: 2;
}

.product-badge.bestseller {
    background: var(--secondary);
}

.product-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.1) 0%, transparent 100%);
    position: relative;
    overflow: hidden;
}

.product-bottle {
    width: 60px;
    height: 160px;
    border-radius: 12px 12px 20px 20px;
    position: relative;
    transition: var(--transition-normal);
}

.product-card:hover .product-bottle {
    transform: scale(1.05) rotate(-5deg);
}

.product-bottle.mexico {
    background: linear-gradient(180deg, #22c55e 0%, #16a34a 100%);
}

.product-bottle.usa {
    background: linear-gradient(180deg, #ef4444 0%, #3b82f6 100%);
}

.product-bottle.canada {
    background: linear-gradient(180deg, #dc2626 0%, #fbbf24 100%);
}

.product-bottle.saudi {
    background: linear-gradient(180deg, #fbbf24 0%, #d97706 100%);
}

.product-bottle.korea {
    background: linear-gradient(180deg, #06b6d4 0%, #8b5cf6 100%);
}

.product-bottle.france {
    background: linear-gradient(180deg, #8b5cf6 0%, #ec4899 100%);
}

.bottle-shine {
    position: absolute;
    top: 0;
    left: 10%;
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    border-radius: inherit;
}

.product-info {
    padding: var(--space-lg);
}

.product-country {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
}

.flag {
    font-size: 1.1rem;
}

.product-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.product-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.product-nutrition {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.calories {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.electrolytes {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(6, 182, 212, 0.2);
    color: #06b6d4;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

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

.product-price {
    font-size: 1.25rem;
    font-weight: 700;
}

.add-to-cart {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.add-to-cart:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.products-cta {
    text-align: center;
    margin-top: var(--space-3xl);
}

/* ===== PROMO SECTION ===== */
.promo {
    padding: var(--space-3xl) 0;
    position: relative;
    overflow: hidden;
}

.promo-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.promo-gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.2) 0%, transparent 60%);
}

.promo-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.promo-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(249, 115, 22, 0.2);
    color: var(--secondary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
}

.promo-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

.promo-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.promo-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.promo-benefits li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-secondary);
}

.promo-benefits svg {
    color: #22c55e;
    flex-shrink: 0;
}

.promo-form-container {
    display: flex;
    justify-content: center;
}

.promo-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(20px);
}

.promo-card-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.promo-card-header h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.promo-card-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.code-inputs {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.code-input {
    width: 80px;
    height: 50px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    transition: var(--transition-fast);
}

.code-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.code-input::placeholder {
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

.code-separator {
    color: var(--text-muted);
    font-size: 1.25rem;
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form-group select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-checkbox label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.form-checkbox a {
    color: var(--primary-light);
    text-decoration: underline;
}

.promo-result {
    text-align: center;
    padding: var(--space-xl);
}

.result-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--space-md);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-icon.success {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.promo-result h4 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

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

/* ===== SCIENCE SECTION ===== */
.science {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, rgba(15, 15, 25, 1) 0%, var(--bg-dark) 100%);
}

.science-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-3xl);
}

.science-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.atom-animation {
    position: relative;
    width: 250px;
    height: 250px;
}

.nucleus {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.5);
    animation: nucleus-pulse 2s infinite ease-in-out;
}

@keyframes nucleus-pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.electron-orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    border: 1px solid rgba(139, 92, 246, 0.3);
    border-radius: 50%;
}

.orbit-1 {
    width: 100px;
    height: 100px;
    margin-left: -50px;
    margin-top: -50px;
    animation: orbit 3s linear infinite;
}

.orbit-2 {
    width: 160px;
    height: 160px;
    margin-left: -80px;
    margin-top: -80px;
    animation: orbit 5s linear infinite reverse;
    border-color: rgba(249, 115, 22, 0.3);
}

.orbit-3 {
    width: 220px;
    height: 220px;
    margin-left: -110px;
    margin-top: -110px;
    animation: orbit 7s linear infinite;
    border-color: rgba(6, 182, 212, 0.3);
}

@keyframes orbit {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.electron {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--primary);
    border-radius: 50%;
    top: -6px;
    left: 50%;
    margin-left: -6px;
    box-shadow: 0 0 10px var(--primary);
}

.orbit-2 .electron {
    background: var(--secondary);
    box-shadow: 0 0 10px var(--secondary);
}

.orbit-3 .electron {
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
}

.science-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.science-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    transition: var(--transition-normal);
}

.science-card:hover {
    border-color: var(--primary);
    transform: translateX(8px);
}

.science-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--primary-light);
}

.science-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--space-sm);
}

.science-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Nutrition Section */
.nutrition-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    max-width: 700px;
    margin: 0 auto;
}

.nutrition-title {
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: var(--space-xs);
}

.nutrition-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--space-xl);
}

.nutrition-table {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.nutrition-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    padding: var(--space-md);
    background: var(--bg-dark);
}

.nutrition-row.header {
    background: var(--bg-glass);
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nutrition-row.highlight {
    background: rgba(139, 92, 246, 0.1);
}

.nutrition-row span:first-child {
    color: var(--text-primary);
}

.nutrition-row span:not(:first-child) {
    text-align: right;
    color: var(--text-secondary);
}

.nutrition-note {
    margin-top: var(--space-lg);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--space-3xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-info {
    padding-right: var(--space-xl);
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.method-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
}

.method-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xs);
}

.method-info a {
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.method-info a:hover {
    color: var(--primary-light);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(5, 5, 10, 0.9);
    border-top: 1px solid var(--border);
    padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-brand {
    padding-right: var(--space-xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

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

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

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.payment-methods span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.payment-icons {
    display: flex;
    gap: var(--space-sm);
}

.payment-icon {
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ===== CART SIDEBAR ===== */
.cart-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    max-width: 100%;
    height: 100vh;
    background: var(--bg-dark);
    border-left: 1px solid var(--border);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    transition: var(--transition-normal);
}

.cart-sidebar.open {
    right: 0;
}

.cart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.cart-header h3 {
    font-size: 1.1rem;
}

.cart-close {
    color: var(--text-secondary);
    padding: var(--space-xs);
    transition: var(--transition-fast);
}

.cart-close:hover {
    color: var(--text-primary);
}

.cart-items {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
}

.cart-empty {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--text-muted);
}

.cart-empty svg {
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.cart-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border);
}

.cart-item-image {
    width: 60px;
    height: 80px;
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cart-item-bottle {
    width: 30px;
    height: 60px;
    border-radius: 6px 6px 10px 10px;
}

.cart-item-info {
    flex: 1;
}

.cart-item-name {
    font-weight: 500;
    margin-bottom: var(--space-xs);
}

.cart-item-price {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cart-item-quantity {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
}

.qty-btn {
    width: 28px;
    height: 28px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.qty-btn:hover {
    border-color: var(--primary);
}

.qty-value {
    min-width: 24px;
    text-align: center;
    font-weight: 500;
}

.cart-item-remove {
    color: var(--text-muted);
    padding: var(--space-xs);
    transition: var(--transition-fast);
}

.cart-item-remove:hover {
    color: #ef4444;
}

.cart-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--border);
    background: var(--bg-card);
}

.cart-subtotal,
.cart-shipping {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.cart-total {
    display: flex;
    justify-content: space-between;
    font-size: 1.1rem;
    font-weight: 600;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--border);
    margin-bottom: var(--space-lg);
}

.cart-footer .btn {
    margin-bottom: var(--space-sm);
}

.cart-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.cart-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ===== USER MODAL ===== */
.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 400px;
    max-width: 90%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    z-index: 2001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal.open {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-content {
    padding: var(--space-xl);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    color: var(--text-muted);
    padding: var(--space-xs);
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.tab-btn {
    flex: 1;
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
}

.tab-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.auth-form .form-group {
    margin-bottom: var(--space-md);
}

.forgot-password {
    display: block;
    text-align: right;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: var(--space-lg);
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-description {
        margin: 0 auto var(--space-xl);
    }

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

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

    .hero-visual {
        margin-top: var(--space-2xl);
    }

    .promo-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .promo-benefits {
        align-items: center;
    }

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

    .science-visual {
        order: -1;
        margin-bottom: var(--space-xl);
    }

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

    .contact-info {
        padding-right: 0;
        text-align: center;
    }

    .contact-methods {
        align-items: center;
    }

    .social-links {
        justify-content: center;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl);
    }

    .footer-brand {
        grid-column: 1 / -1;
        padding-right: 0;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition-normal);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .products-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .payment-methods {
        flex-direction: column;
    }

    .cart-sidebar {
        width: 100%;
        right: -100%;
    }

    .code-inputs {
        flex-wrap: wrap;
    }

    .code-input {
        width: 70px;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .bottle-container {
        transform: scale(0.8);
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content > * {
    animation: fadeInUp 0.8s ease forwards;
}

.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.hero-content > *:nth-child(5) { animation-delay: 0.5s; }

/* Intersection Observer animations */
.product-card,
.science-card,
.promo-card {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.product-card.visible,
.science-card.visible,
.promo-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Toast notifications */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    z-index: 3000;
    transform: translateX(150%);
    transition: var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-color: #22c55e;
}

.toast.error {
    border-color: #ef4444;
}