/* 
   NUTRIZET Design System
   Style: Medical, clean, a lot of air, thin lines, light gray blocks
*/

:root {
    --color-white: #ffffff;
    --color-light-gray: #f5f7f9;
    --color-border: #e6e9ec;
    --color-text-main: #000000;
    --color-text-muted: #1a1a1a;
    --color-accent: #609E91;
    --color-price: #2e7d32;
    --color-footer: #609E91;
    --color-footer-text: rgba(255, 255, 255, 0.75);
    --color-white-muted: #dcdfe5;

    --font-main: 'Inter', system-ui, -apple-system, sans-serif;

    --line-thickness: 1px;
    --border-radius: 4px;
    --border-radius-large: 12px;

    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    --transition-fast: 0.2s ease;
    --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text-main);
    background-color: var(--color-white);
    line-height: 1.6;
    font-size: 18px;
    /* Increased from 16px */
    font-weight: 400;
    /* Increased from 300 */
}

body.no-scroll {
    overflow: hidden;
}


a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

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

ul {
    list-style: none;
}

/* Typography */
.heading-large {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.1;
    font-weight: 600;
    /* Increased weight */
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.product-title {
    margin-bottom: 0.5rem;
}

.product-subtitle {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    line-height: 1.3;
    font-weight: 300;
    color: var(--color-text-main);
    margin-bottom: var(--space-md);
}

.description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
    max-width: 600px;
    line-height: 1.7;
}

/* Base Layout */
.container {
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

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

.section-white {
    background-color: var(--color-white);
}

.section-light-gray {
    background-color: var(--color-light-gray);
    border-top: var(--line-thickness) solid var(--color-border);
    border-bottom: var(--line-thickness) solid var(--color-border);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Верхняя полоса: белый фон, логотип + контакты */
.header-top {
    background-color: var(--color-white);
    border-bottom: var(--line-thickness) solid var(--color-border);
}

.header-top-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--space-md);
    height: 100px;
    /*height: 64px;*/
    /* Increased to accommodate larger logo */
}

.logo {
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    align-self: stretch;
    padding: 0;
}

.logo-img {
    height: auto;
    max-height: 100px;
    /* Increased from 52px (approx 1.5x) */
    width: auto;
    object-fit: contain;
}

.header-contacts {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.header-contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.header-contact-item svg {
    color: var(--color-accent);
    flex-shrink: 0;
}

a.header-contact-item:hover {
    color: var(--color-accent);
}

/* Нижняя полоса: фирменный цвет, меню + корзина */
.header-bottom {
    background-color: var(--color-accent);
    border-bottom: var(--line-thickness) solid rgba(255, 255, 255, 0.15);
}

.header-bottom-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 52px;
}

.main-nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
    position: relative;
    padding: 0.25rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--color-white);
    transition: width var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-white);
}

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

/* Hamburger */
.hamburger {
    display: none;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1000;
}

.hamburger-box {
    width: 24px;
    height: 18px;
    display: inline-block;
    position: relative;
}

.hamburger-inner,
.hamburger-inner::before,
.hamburger-inner::after {
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    position: absolute;
    transition: transform 0.15s ease, opacity 0.15s ease;
}

.hamburger-inner {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger-inner::before {
    content: '';
    top: -8px;
}

.hamburger-inner::after {
    content: '';
    top: 8px;
}

.hamburger.is-active .hamburger-inner {
    background-color: transparent;
}

.hamburger.is-active .hamburger-inner::before {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.is-active .hamburger-inner::after {
    transform: translateY(-8px) rotate(-45deg);
}


.cart-link {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    color: var(--color-white);
    padding: 0.5rem;
    transition: transform var(--transition-fast);
}

.cart-link:hover {
    transform: scale(1.05);
}

.cart-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #ef4444;
    color: var(--color-white);
    font-size: 0.7rem;
    font-weight: 600;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: translate(25%, -25%);
}

/* Split Layouts (Hero & Block 2) */
.split-layout {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.split-content {
    flex: 1;
}

.split-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-wrapper {
    background-color: var(--color-white);
    border: var(--line-thickness) solid var(--color-border);
    padding: var(--space-lg);
    border-radius: var(--border-radius-large);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.02);
    transition: transform var(--transition-smooth);
}

.image-wrapper:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.04);
}

.image-wrapper img {
    max-height: 500px;
    object-fit: contain;
    mix-blend-mode: multiply;
    /* Helps blend white backgrounds of images if any */
}

/* Info Blocks */
.info-block {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: var(--line-thickness) solid var(--color-border);
}

.product-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-price);
    margin: 1rem 0;
}

.header-slogan {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-accent);
    text-align: center;
    max-width: 400px;
    line-height: 1.2;
}

.info-title {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
    font-weight: 500;
}

.info-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 2rem;
}

.info-list li {
    position: relative;
    padding-left: 1rem;
    color: var(--color-text-main);
}

.info-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition-fast);
    cursor: pointer;
    border-radius: 0;
    white-space: nowrap;
}

.btn-outline {
    border: var(--line-thickness) solid var(--color-text-muted);
    color: var(--color-text-main);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background-color: rgba(0, 0, 0, 0.02);
}

.btn-solid {
    border: var(--line-thickness) solid var(--color-accent);
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-solid:hover {
    background-color: var(--color-white);
    color: var(--color-accent);
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1rem;
}

.btn-group {
    display: flex;
    align-items: stretch;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn-group .btn {
    flex: 1 1 auto;
    min-width: 0;
    justify-content: center;
}

/* Accordion / Details */
.product-details {
    margin: var(--space-md) 0 0;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: var(--color-white);
}

.product-details summary {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-main);
    padding: 1rem 1.5rem;
    cursor: pointer;
    background-color: var(--color-light-gray);
    list-style: none;
    /* Hide default arrow */
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.product-details summary:hover {
    color: var(--color-accent);
}

.product-details summary::-webkit-details-marker {
    display: none;
}

.product-details summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 300;
    transition: transform var(--transition-fast);
    color: var(--color-accent);
}

.product-details[open] summary {
    border-bottom: 1px solid var(--color-border);
}

.product-details[open] summary::after {
    transform: rotate(45deg);
}

.product-details-content {
    padding: 1.5rem;
}

.product-details-content .info-block:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

/* Science Section */
.text-center {
    text-align: center;
}

.center-text-wrapper {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-top: var(--space-lg);
    border-top: var(--line-thickness) solid var(--color-border);
    padding-top: var(--space-lg);
}

.feature-card {
    text-align: center;
    padding: 0 var(--space-sm);
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 1.5rem;
    border: var(--line-thickness) solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-main);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.feature-text {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Order Section */
.order-container {
    display: flex;
    justify-content: center;
}

.order-box {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: var(--line-thickness) solid var(--color-border);
    width: 100%;
    max-width: 800px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.02);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: var(--space-md) 0;
    padding: var(--space-md) 0;
    border-top: var(--line-thickness) solid var(--color-border);
    border-bottom: var(--line-thickness) solid var(--color-border);
}

.contact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px dashed var(--color-border);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-label {
    color: var(--color-text-muted);
    font-weight: 400;
}

.contact-value {
    font-weight: 500;
    font-size: 1.125rem;
    color: var(--color-accent);
}

.contact-item:hover .contact-value {
    color: var(--color-text-muted);
}

/* Where to buy section */
.buy-section-box {
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
}

.buy-section-title {
    text-align: center;
}

.buy-section-subtitle {
    text-align: center;
    max-width: 100%;
    margin-bottom: 2rem;
    font-weight: 500;
    color: var(--color-accent);
}

.buy-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.buy-column-title {
    margin-bottom: 1.5rem;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pharmacy-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.pharmacy-item {
    border-left: 3px solid var(--color-accent);
    padding-left: 1rem;
    margin-bottom: 1.5rem;
}

.pharmacy-note {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.pharmacy-phone {
    color: var(--color-accent);
    font-weight: 500;
}

.manufacturer-box {
    margin-top: 3rem;
    padding: 1.5rem;
    background: var(--color-light-gray);
    border-radius: 8px;
}

.buy-footer {
    text-align: center;
    margin-top: 3rem;
}


/* Footer */
.site-footer {
    background-color: var(--color-footer);
    color: var(--color-footer-text);
    padding: var(--space-md) 0;
}

.footer-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-md);
    width: 100%;
}

.footer-logo .logo {
    color: var(--color-white);
}

.footer-logo-img {
    height: 48px;
    /*filter: brightness(0) invert(1);*/
    opacity: 0.9;
}

.footer-nav {
    display: flex;
    gap: 4rem;
    flex-wrap: wrap;
}

.footer-nav-column {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav-title {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-bottom {
    width: 100%;
    text-align: center;
    padding-top: var(--space-md);
    margin-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    color: var(--color-footer-text);
}

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

.footer-link:hover {
    color: var(--color-white);
}

/* Responsive Design */
@media (max-width: 992px) {
    .split-layout {
        flex-direction: column;
        text-align: center;
    }

    .reverse-on-mobile {
        flex-direction: column-reverse;
    }

    .split-image,
    .split-content {
        width: 100%;
    }

    .info-block {
        text-align: left;
    }

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

    .header-contacts {
        gap: 1rem;
    }

    /* Mobile Nav */
    .hamburger {
        display: block;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background-color: var(--color-accent);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s ease-in-out;
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
        z-index: 999;
        display: flex;
    }

    .main-nav.is-active {
        right: 0;
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .buy-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}


@media (max-width: 768px) {
    :root {
        --space-xl: 4rem;
        --space-lg: 2rem;
        --space-md: 1.5rem;
    }

    .header-contacts span {
        display: none;
    }

    .header-contact-item {
        gap: 0;
    }

    .footer-top {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        gap: 2.5rem;
    }

    .footer-nav {
        flex-direction: column;
        gap: 2rem;
        width: 100%;
    }

    .footer-nav-column {
        align-items: center;
    }
}

/* Animations (Optional subtle micro-animations) */
.left-anim,
.right-anim,
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.visible {
    opacity: 1;
    transform: translateY(0);
}