image.png/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 60px;
}

/* Header styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.7);
    padding: 20px 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.burger-menu span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: #fff;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
}

.burger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
    width: 120%;
}

.burger-menu.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

.burger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
    width: 120%;
}

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

.logo {
    text-decoration: none;
    color: #fff;
}

.logo img {
    height: 60px;
    width: auto;
    vertical-align: middle;
    margin: 3px 0;
}

.menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.menu__link {
    position: relative;
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s;
    padding: 5px 0;
}

.menu__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #007bff;
    transition: width 0.3s ease;
}

.menu__link:hover::after,
.menu__link:focus::after {
    width: 100%;
}

.menu__link {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s;
}

.menu__link:hover {
    color: #007bff;
}

/* Hero section */
.hero {
    padding: 80px 0;
    background: #1a1a1a;
    min-height: 100vh;
    position: relative;
    color: #fff;
}

.hero__container {
    display: grid;
    grid-template-columns: 100px 1fr 100px;
    min-height: 100vh;
    position: relative;
}

.hero__side-nav {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 40px 0;
    position: relative;
}

.hero__side-nav::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 1px;
    height: 80%;
    background: rgba(255,255,255,0.1);
    transform: translateY(-50%);
}

.hero__contacts {
    width: 200px;
    bottom: 40px;
    left: 40px;
    color: #fff;
    font-size: 18px;
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
    animation-delay: 0.6s;
}

.hero__contacts a {
    color: #fff;
    text-decoration: none;
    position: relative;
    padding-left: 25px;
    transition: color 0.3s ease;
    display: inline-block;
    margin-top: 20px;
}

.hero__contacts a::before {
    content: '☎';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 16px;
}

.hero__contacts a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 25px;
    width: 0;
    height: 1px;
    background-color: #fff;
    transition: width 0.3s ease;
}

.hero__contacts a:hover {
    opacity: 0.7;
}

.hero__contacts a:hover::after {
    width: calc(100% - 25px);
}

.hero__social {
    display: flex;
    flex-direction: row;
    position: absolute;
    justify-content: space-evenly;
    top: 50%;
    right: 40px;
    transform: translateY(-50%);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    gap: 30px;
    z-index: 10;
}

.hero__social a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    opacity: 0;
    transition: opacity 0.3s;
    animation: fadeIn 0.8s ease-out forwards;
    transform: rotate(180deg);
}

.hero__social a:nth-child(1) {
    animation-delay: 0.2s;
}

.hero__social a:nth-child(2) {
    animation-delay: 0.4s;
}

.hero__social a:hover {
    opacity: 0.7;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 0.7;
        transform: translateY(0);
    }
}

.hero__content {
    padding: 0 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.hero__title {
    font-size: 72px;
    line-height: 1.1;
    margin-bottom: 30px;
    font-weight: 700;
}

.hero__title span {
    color: #4CA5FF;
}

.hero__text p {
    font-size: 16px;
    margin-bottom: 15px;
    color: rgba(255,255,255,0.7);
    margin-top: 30px;
}

.hero__decoration {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0.1;
}

.hero__decoration::before,
.hero__decoration::after {
    content: '';
    position: absolute;
    background: #fff;
}

.hero__decoration::before {
    width: 1px;
    height: 100%;
    left: 33.33%;
}

.hero__decoration::after {
    width: 1px;
    height: 100%;
    left: 66.66%;
}

.hero__slider {
    position: absolute;
    right: 20px;
    top: 60%;
    transform: translateY(-50%);
    width: 60%;
    height: 80vh;
    overflow: hidden;
    border-radius: 10px;
    opacity: 0;
    animation: slideIn 1s ease-out forwards;
}
.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.swiper {
    height: 300px;
    background-position: center;
}
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translate(50px, -50%);
    }
    to {
        opacity: 1;
        transform: translate(0, -50%);
    }
}

/* About section */
.about {
    padding: 120px 0;
    background: #fff;
    overflow: hidden;
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: center;
}

.about__image {
    position: relative;
}

.about__image-caption {
    margin-top: 20px;
    margin-bottom: 25px;
    font-size: 24px;
    color: #333;
    text-align: center;
    font-weight: 500;
}

.about__contact-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    text-align: center;
    margin-top: 20px;
}

.about__contact-btn:hover {
    background: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
}

.section-title {
    font-size: 36px;
    margin-bottom: 40px;
    color: #333;
}

.about__features {
    display: grid;
    gap: 30px;
}

.feature-item {
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
    position: relative;
    padding-left: 80px;
}

.feature-item:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.4s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item::before {
    content: attr(data-number);
    position: absolute;
    left: 20px;
    top: 20px;
    font-size: 24px;
    font-weight: bold;
    color: #007bff;
    opacity: 0.7;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.feature-item p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
}

.about__image {
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    opacity: 0;
    transform: translateX(20px);
    animation: fadeInRight 0.8s ease-out forwards;
    animation-delay: 0.6s;
    min-height: 500px;
}

.about__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.about__image:hover img {
    transform: scale(1.05);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.about__text {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
}

.about__stats {
    display: grid;
    gap: 30px;
}

.stats-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.stats-item p {
    color: #666;
}

.about__image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* Projects section */
.projects {
    padding: 120px 0;
    background: #f8f9fa;
    overflow: hidden;
}

.projects__list {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.project-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.project-card h3 {
    font-size: 24px;
    margin: 0 0 30px;
    font-weight: 500;
}

.project-info {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: auto auto;
    gap: 15px 40px;
}

.project-info li {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px;
    color: #666;
    position: relative;
}

.project-info li::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -8px;
    height: 1px;
    background: #eee;
}

.project-info span {
    color: #999;
    font-weight: normal;
}

.project-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 10px;
}

.project-link {
    display: inline-block;
    text-decoration: none;
    color: #999;
    font-size: 14px;
    margin-top: 30px;
    position: relative;
}

.project-link::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    background: #999;
    transition: transform 0.3s;
    transform-origin: right;
}

.project-link:hover::after {
    transform: scaleX(0);
    transform-origin: left;
}

.project-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out forwards;
}

.project-card:nth-child(2) {
    animation-delay: 0.2s;
}

.project-card:nth-child(3) {
    animation-delay: 0.4s;
}

/* Calculator section */
.calculator {
    padding: 120px 0;
    background: #000 url('../img/form.jpg') no-repeat right center;
    /* background-size: contain; */
    color: #fff;
    overflow: hidden;
    background-size: cover;
    border-radius: 10px;
    padding: 10px;
}

.calc-form {
    max-width: 600px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

select {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 0;
    color: #fff;
    font-size: 16px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='14' height='8' viewBox='0 0 14 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L7 7L13 1' stroke='white' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

select option {
    background: #000;
    color: #fff;
}

.range-group {
    margin-bottom: 30px;
}

.range-group label {
    display: block;
    margin-bottom: 15px;
    color: #fff;
    font-size: 16px;
}

.range-container {
    position: relative;
    padding: 0 10px;
}

.range-min,
.range-max {
    position: absolute;
    top: -25px;
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.range-min {
    left: 10px;
}

.range-max {
    right: 10px;
}

input[type="range"] {
    width: 100%;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    border-radius: 0;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 50%;
    cursor: pointer;
}

.btn-calculate {
    width: 100%;
    padding: 15px;
    background: #8AB4F8;
    border: none;
    color: #000;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-bottom: 15px;
}

.btn-calculate:hover {
    background: #6b9af7;
}

.reset-filters {
    display: block;
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.reset-filters:hover {
    color: #fff;
}

/* Footer */
.footer {
    padding: 40px 0;
    background: #333;
    color: #fff;
}

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

.footer .logo {
    color: #fff;
}

.footer .logo img {
    height: 60px;
    width: auto;
    margin-right: 20px;
}

.footer__menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.footer__menu a {
    color: #fff;
    text-decoration: none;
}

.footer__contacts a {
    margin: 5px 0;
    color: #fff;
    text-decoration: none;
}