/* ========================================
   ICE CRISTAL - ОСНОВНЫЕ СТИЛИ
   Ледяная тематика с голубыми оттенками
   ======================================== */

/* === CSS ПЕРЕМЕННЫЕ === */
:root {
    /* Ледяная цветовая палитра */
    --ice-blue-light: #e3f4ff;
    --ice-blue: #a8d8ff;
    --ice-blue-medium: #6bb6ff;
    --ice-blue-dark: #2e8bc0;
    --ice-blue-deep: #1a5f8a;
    --ice-cyan: #00d4ff;
    --ice-white: #f0f9ff;
    --ice-glass: rgba(255, 255, 255, 0.15);

    /* Нейтральные цвета */
    --text-dark: #0a2540;
    --text-gray: #425466;
    --text-light: #627d98;
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --shadow-color: rgba(45, 139, 192, 0.15);

    /* Градиенты */
    --gradient-ice: linear-gradient(135deg, #e3f4ff 0%, #a8d8ff 50%, #6bb6ff 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(168, 216, 255, 0.3) 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(10, 37, 64, 0) 0%, rgba(10, 37, 64, 0.7) 100%);

    /* Типографика */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Raleway', sans-serif;

    /* Размеры */
    --container-width: 1200px;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --transition: all 0.3s ease;
}

/* === СБРОС И БАЗОВЫЕ СТИЛИ === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
}

/* === УТИЛИТЫ === */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-ice);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    font-weight: 400;
    margin-top: 20px;
}

/* === ХЕДЕР === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px var(--shadow-color);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 25px var(--shadow-color);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ice-blue-dark);
}

.ice-icon {
    color: var(--ice-blue-medium);
    font-size: 1.8rem;
    animation: sparkle 3s ease-in-out infinite;
}

@keyframes sparkle {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

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

.nav__menu {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav__link {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 5px 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-ice);
    transition: width 0.3s ease;
}

.nav__link:hover::after {
    width: 100%;
}

.nav__cta-btn {
    background: var(--gradient-ice);
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(107, 182, 255, 0.3);
}

.nav__cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(107, 182, 255, 0.4);
}

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--ice-blue-dark);
}

/* === HERO СЕКЦИЯ === */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-ice);
    overflow: hidden;
    padding-top: 80px;
}

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(168, 216, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(107, 182, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 90%, rgba(0, 212, 255, 0.2) 0%, transparent 50%);
}

.ice-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20% 30%, white, transparent),
        radial-gradient(2px 2px at 60% 70%, white, transparent),
        radial-gradient(1px 1px at 50% 50%, white, transparent),
        radial-gradient(1px 1px at 80% 10%, white, transparent),
        radial-gradient(2px 2px at 90% 60%, white, transparent);
    background-size: 200px 200px, 300px 300px, 250px 250px, 150px 150px, 180px 180px;
    animation: snowfall 20s linear infinite;
    opacity: 0.6;
}

@keyframes snowfall {
    from {
        background-position: 0 0, 0 0, 0 0, 0 0, 0 0;
    }

    to {
        background-position: 200px 200px, -300px 300px, 250px 250px, -150px 150px, 180px 180px;
    }
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 30px;
}

.hero__title {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    line-height: 1.2;
}

.highlight {
    background: linear-gradient(135deg, #ffffff 0%, #e3f4ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
}

.hero__subtitle {
    font-size: 1.3rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 400;
    margin-bottom: 50px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.hero__features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 50px;
}

.feature-card {
    background: var(--ice-glass);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius);
    padding: 25px 15px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: white;
    margin-bottom: 15px;
}

.feature-card p {
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
}

.hero__buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

.btn--primary {
    background: white;
    color: var(--ice-blue-dark);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.4);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
    backdrop-filter: blur(5px);
}

.btn--secondary:hover {
    background: white;
    color: var(--ice-blue-dark);
}

.btn--large {
    padding: 18px 45px;
    font-size: 1.1rem;
}

.hero__scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 2rem;
    color: white;
    animation: bounce 2s ease-in-out infinite;
    cursor: pointer;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* === PRODUCT СЕКЦИЯ === */
.product {
    padding: 50px 0;
    background: var(--bg-white);
}

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

.product__gallery {
    position: sticky;
    top: 100px;
}

.main-image {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 10px 40px var(--shadow-color);
    cursor: pointer;
}

.main-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(107, 182, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.main-image:hover .image-overlay {
    opacity: 1;
}

.image-overlay i {
    font-size: 3rem;
    color: white;
}

.thumbnail-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.thumbnail {
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    border: 3px solid transparent;
    transition: var(--transition);
    opacity: 0.7;
}

.thumbnail:hover,
.thumbnail.active {
    opacity: 1;
    border-color: var(--ice-blue-medium);
    transform: scale(1.05);
}

.product__info {
    padding: 20px 0;
}

.product__name {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.product__description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 30px;
}

.product__price {
    background: var(--gradient-ice);
    padding: 20px 30px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.price-label {
    font-size: 1rem;
    color: white;
    font-weight: 500;
}

.price-value {
    font-size: 2rem;
    font-weight: 800;
    color: white;
}

.price-unit {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
}

.product__specs {
    margin-bottom: 35px;
}

.product__specs h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 20px;
}

.specs-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.specs-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px;
    background: var(--ice-white);
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.specs-list li:hover {
    background: var(--ice-blue-light);
    transform: translateX(5px);
}

.specs-list i {
    font-size: 1.3rem;
    color: var(--ice-blue-medium);
}

.specs-list span {
    color: var(--text-gray);
    font-size: 0.95rem;
}

.product__buy {
    margin-bottom: 30px;
}

.product__buy h4 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.buy-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.marketplace-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 15px 25px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
}

.ozon-btn {
    background: #005bff;
    color: white;
}

.ozon-btn:hover {
    background: #0047cc;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 91, 255, 0.3);
}

.wildberries-btn {
    background: #c50063;
    color: white;
}

.wildberries-btn:hover {
    background: #a3004f;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(197, 0, 99, 0.3);
}

.product__badges {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: var(--ice-blue-light);
    border-radius: 25px;
    font-size: 0.9rem;
    color: var(--ice-blue-dark);
    font-weight: 500;
}

.badge i {
    font-size: 1.1rem;
}

/* === ABOUT СЕКЦИЯ === */
.about {
    padding: 50px 0;
    background: var(--ice-white);
}

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

.about-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: 0 5px 20px rgba(107, 182, 255, 0.1);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(107, 182, 255, 0.2);
}

.about-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-ice);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.about-card h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.about-card p {
    color: var(--text-gray);
    line-height: 1.7;
}

/* === CALCULATOR СЕКЦИЯ === */
.calculator {
    padding: 50px 0;
    background: white;
}

.calculator__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.calculator__form {
    background: var(--ice-white);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px var(--shadow-color);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.form-group label i {
    color: var(--ice-blue-medium);
}

.form-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--ice-blue-light);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--ice-blue-medium);
    box-shadow: 0 0 0 3px rgba(107, 182, 255, 0.1);
}

.calculator__result {
    background: var(--gradient-ice);
    padding: 40px;
    border-radius: var(--border-radius);
    color: white;
    text-align: center;
    box-shadow: 0 10px 40px rgba(107, 182, 255, 0.3);
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.calculator__result h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    font-weight: 600;
}

.result-value {
    margin-bottom: 30px;
}

.result-number {
    font-size: 4rem;
    font-weight: 800;
    display: block;
    line-height: 1;
}

.result-unit {
    font-size: 1.5rem;
    opacity: 0.9;
}

.result-details {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 25px;
}

.result-details p {
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.result-details p:last-child {
    margin-bottom: 0;
}

.result-details span {
    font-weight: 700;
}

.calculator__info {
    background: rgba(255, 255, 255, 0.15);
    padding: 20px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.3);
    text-align: left;
}

.calculator__info i {
    float: left;
    font-size: 1.5rem;
    margin-right: 10px;
    opacity: 0.9;
}

.calculator__info p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    line-height: 1.6;
}

.calculator__info p:last-child {
    margin-bottom: 0;
}

/* === GALLERY СЕКЦИЯ === */
.gallery {
    padding: 50px 0;
    background: var(--ice-white);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-overlay);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay h4 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 8px;
    font-weight: 600;
}

.gallery-overlay p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
    margin-bottom: 15px;
}

.gallery-zoom {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    transition: var(--transition);
}

.gallery-zoom:hover {
    background: white;
    color: var(--ice-blue-dark);
}

/* === DELIVERY СЕКЦИЯ === */
.delivery {
    padding: 50px 0;
    background: white;
}

.delivery__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.delivery-card {
    text-align: center;
    padding: 30px 20px;
    background: var(--ice-white);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.delivery-card:hover {
    background: var(--ice-blue-light);
    transform: translateY(-5px);
}

.delivery-card__icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: var(--gradient-ice);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.delivery-card h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 12px;
    font-weight: 600;
}

.delivery-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.delivery__marketplaces {
    text-align: center;
    background: var(--ice-white);
    padding: 50px;
    border-radius: var(--border-radius);
}

.delivery__marketplaces h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 30px;
}

.marketplace-logos {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 25px;
}

.marketplace-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.marketplace-logo i {
    font-size: 3.5rem;
    color: var(--ice-blue-medium);
}

.marketplace-logo span {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-dark);
}

.marketplace-note {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* === FAQ СЕКЦИЯ === */
.faq {
    padding: 50px 0;
    background: var(--ice-white);
}

.faq__list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    box-shadow: 0 3px 15px rgba(107, 182, 255, 0.1);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 5px 25px rgba(107, 182, 255, 0.15);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    cursor: pointer;
    user-select: none;
}

.faq-question h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    font-weight: 600;
    flex: 1;
}

.faq-question i {
    font-size: 1.2rem;
    color: var(--ice-blue-medium);
    transition: var(--transition);
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* === CONTACTS СЕКЦИЯ === */
.contacts {
    padding: 50px 0;
    background: white;
}

.contacts__content {
    max-width: 900px;
    margin: 0 auto;
}

.contacts__info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.contact-item {
    display: flex;
    gap: 20px;
    align-items: start;
    padding: 25px;
    background: var(--ice-white);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--ice-blue-light);
    transform: translateY(-5px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-ice);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.contact-text a {
    color: var(--ice-blue-dark);
    font-weight: 500;
}

.contact-text a:hover {
    color: var(--ice-blue-medium);
}

.contacts__social {
    text-align: center;
    margin-bottom: 40px;
}

.contacts__social h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 25px;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 20px 30px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.social-link.instagram {
    background: linear-gradient(135deg, #f58529, #dd2a7b, #8134af);
    color: white;
}

.social-link.pinterest {
    background: #e60023;
    color: white;
}

.social-link.vk {
    background: #0077ff;
    color: white;
}

.social-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.social-link i {
    font-size: 2rem;
}

.social-link span {
    font-weight: 600;
}

.social-note {
    color: var(--text-gray);
}

.contacts__cta {
    text-align: center;
}

/* === FOOTER === */
.footer {
    background: var(--text-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

.footer__description {
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

.footer__nav h4,
.footer__info h4,
.footer__contact h4 {
    color: white;
    font-size: 1.1rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer__nav ul,
.footer__info ul,
.footer__contact ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer__nav a,
.footer__info a,
.footer__contact a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer__nav a:hover,
.footer__info a:hover,
.footer__contact a:hover {
    color: var(--ice-blue-light);
    padding-left: 5px;
}

.footer__contact li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer__contact i {
    color: var(--ice-blue-medium);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer__bottom p {
    margin-bottom: 5px;
}

/* === LIGHTBOX === */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 37, 64, 0.95);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox__close {
    position: absolute;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.lightbox__close:hover {
    background: white;
    color: var(--ice-blue-dark);
}

.lightbox__image {
    max-width: 90%;
    max-height: 90vh;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.lightbox__caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 15px 30px;
    border-radius: 30px;
    color: white;
    font-size: 1.1rem;
}

/* === BACK TO TOP === */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: var(--gradient-ice);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: 0 5px 20px rgba(107, 182, 255, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(107, 182, 255, 0.5);
}

/* === АДАПТИВНОСТЬ === */
@media (max-width: 1024px) {
    .hero__title {
        font-size: 2.8rem;
    }

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

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

    .product__gallery {
        position: static;
    }

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

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

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

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

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

@media (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        padding: 50px 20px;
        box-shadow: 0 5px 20px var(--shadow-color);
        transition: var(--transition);
    }

    .nav__menu.active {
        left: 0;
    }

    .nav__toggle {
        display: block;
    }

    .nav__cta-btn {
        display: none;
    }

    .hero__title {
        font-size: 2.2rem;
    }

    .hero__subtitle {
        font-size: 1.1rem;
    }

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

    .hero__buttons {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: 1rem;
    }

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

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

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

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

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

    .social-links {
        flex-direction: column;
    }

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

    .marketplace-logos {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.8rem;
    }

    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }

    .product__name {
        font-size: 1.8rem;
    }

    .price-value {
        font-size: 2rem;
    }

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