/* Общие стили */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --gray-color: #7f8c8d;
    --light-gray: #bdc3c7;
    --success-color: #27ae60;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
    background-color: #87cfff;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 0.5rem auto 2rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--gray-color);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.dark-section {
    background-color: #bce3fd;
    border-radius: 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn:hover {
    background-color: #2980b9;
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(-1px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-submit {
    width: 100%;
    margin-top: 10px;
}

.back-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top-btn:hover {
    background-color: var(--dark-color);
    transform: translateY(-5px);
}

/* Шапка сайта */
.header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px 0 0;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 40%;
    height: 100%;
    background-color: rgba(52, 152, 219, 0.1);
    clip-path: polygon(25% 0, 100% 0, 100% 100%, 0% 100%);
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
                url('images/road.jpg') center/cover no-repeat; /* Фоновая картинка */
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-sub {
    font-size: 0.9rem;
    color: var(--light-gray);
}

.desktop-nav .nav-list {
    display: flex;
    gap: 30px;
}

.desktop-nav .nav-list a {
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 5px 0;
}

.desktop-nav .nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

.desktop-nav .nav-list a:hover {
    color: var(--secondary-color);
}

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

.header-contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

.phone-link {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.phone-link:hover {
    color: var(--secondary-color);
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background-color: white;
    border-radius: 3px;
    transition: var(--transition);
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.active .hamburger-line:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 40px 0 80px;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: var(--light-color);
    opacity: 0.9;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 2.5rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
}

.feature i {
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.image-placeholder {
    width: 100%;
    max-width: 500px;
    height: 350px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    border: 2px dashed rgba(255, 255, 255, 0.3);
}

.image-placeholder i {
    font-size: 5rem;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.image-placeholder p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.7);
}

/* О нас */
.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

.about-image {
    flex: 1;
}

/* Решаем проблемы */
.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.problem-card {
    background-color: rgba(255, 255, 255, 0.925);
    background: linear-gradient(rgba(255, 255, 255, 0.87), rgba(201, 231, 255, 0.89)),
                url('images/road.jpg') center/cover no-repeat; /* Фоновая картинка */
    background-size: cover;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-content: space-between;
    flex-direction: column;
    justify-content: space-between;
}

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.problem-icon {
    font-size: 2.5rem;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.problem-title {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.problem-text {
    color: #2C3E50;
    margin-bottom: 20px;
    font-style: bold;
}

.solution {
    background-color: #f0f7ff;
    padding: 15px;
    border-radius: var(--border-radius);
    border-left: 4px solid var(--secondary-color);
}

/* Преимущества */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.advantage-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
}

.advantage-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.advantage-title {
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.cta-block {
    background: linear-gradient(135deg, var(--secondary-color), #2c3e50);
    color: white;
    border-radius: var(--border-radius);
    padding: 50px;
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    margin-bottom: 15px;
}

.cta-text {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* Услуги */
.services-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.services-image {
    flex: 1;
}

.services-list {
    flex: 1;
}

.service-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.service-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.service-icon {
    font-size: 2rem;
    color: var(--secondary-color);
    min-width: 50px;
}

.service-text h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

/* Контакты и форма */
.contact-content {
    display: flex;
    gap: 60px;
    margin-top: 40px;
}

.contact-info {
    flex: 1;
}

.contact-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--dark-color);
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 25px;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 5px;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-item a {
    color: var(--secondary-color);
}

.contact-item a:hover {
    text-decoration: underline;
}

.guarantee-box {
    background-color: #f0f7ff;
    border-radius: var(--border-radius);
    padding: 25px;
    margin-top: 40px;
    border-left: 4px solid var(--secondary-color);
}

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

.guarantee-box ul {
    list-style-type: disc;
    padding-left: 20px;
}

.guarantee-box li {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.contact-form-container {
    flex: 1;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px 15px;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.checkbox-group {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
}

.form-note {
    font-size: 0.9rem;
    color: var(--gray-color);
    text-align: center;
    margin-top: 15px;
}

.form-note a {
    color: var(--secondary-color);
    text-decoration: underline;
}

.success-message {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.success-message i {
    font-size: 4rem;
    color: var(--success-color);
    margin-bottom: 20px;
}

.success-message h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
}

.success-message p {
    color: var(--gray-color);
    font-size: 1.1rem;
}

/* Футер */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

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

.footer-text {
    color: var(--light-gray);
    margin-top: 15px;
    line-height: 1.6;
}

.footer-title {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: white;
    position: relative;
    padding-bottom: 10px;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

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

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contacts li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    color: var(--light-gray);
}

.footer-contacts i {
    color: var(--secondary-color);
    margin-top: 3px;
}

.footer-hours {
    color: var(--light-gray);
    margin-bottom: 20px;
}

.btn-footer {
    background-color: var(--secondary-color);
    color: white;
    width: 100%;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--light-gray);
    font-size: 0.9rem;
}

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

.footer-bottom i {
    color: var(--accent-color);
}

/* Мобильное меню */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100%;
    background-color: white;
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mobile-menu-header h3 {
    font-size: 1.2rem;
    margin-bottom: 0;
}

.mobile-close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mobile-nav-list {
    padding: 20px;
    flex-grow: 1;
}

.mobile-nav-list li {
    margin-bottom: 10px;
}

.mobile-nav-link {
    display: block;
    padding: 15px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    color: var(--dark-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.mobile-nav-link:hover {
    background-color: #f0f7ff;
    color: var(--secondary-color);
    padding-left: 20px;
}

.mobile-menu-footer {
    padding: 20px;
    border-top: 1px solid #eee;
}

.mobile-phone-link {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.mobile-phone-link i {
    color: var(--secondary-color);
}

.mobile-call-btn {
    width: 100%;
}

/* Модальное окно */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1002;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 500px;
    background-color: white;
    border-radius: var(--border-radius);
    z-index: 1003;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
}

.modal-title {
    font-size: 1.5rem;
    margin-bottom: 0;
    color: var(--dark-color);
}

.modal-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-color);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close-btn:hover {
    background-color: #f5f5f5;
    color: var(--dark-color);
}

.modal-body {
    padding: 30px;
}

.modal-body p {
    margin-bottom: 25px;
    color: var(--gray-color);
}

/* Адаптация для планшетов */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .about-content, 
    .services-content,
    .contact-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
}

/* Адаптация для мобильных устройств */
@media (max-width: 768px) {
    .header::before {
        width: 100%;
        clip-path: polygon(0 0, 100% 0, 100% 30%, 0% 100%);
    }
    
    .header-top {
        margin-bottom: 40px;
    }
    
    .desktop-nav,
    .header-contacts {
        display: none;
    }
    
    .hamburger-btn {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 20px;
        align-items: center;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .problems-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .back-to-top-btn {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }

}

/* Стили для сообщений об ошибках */
.error-message {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 5px;
    display: block;
}

input.error, textarea.error {
    border-color: #e74c3c !important;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
}

/* Дополнительные стили для формы */
.form-group {
    position: relative;
}

.form-group label {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.form-group label::after {
    content: '*';
    color: #e74c3c;
    margin-left: 4px;
    font-weight: bold;
}

.form-group label.optional::after {
    content: '';
}

/* Для чекбоксов убираем звездочку */
.checkbox-group label::after {
    content: '';
}

img {
    max-width: 100%; 
    height: auto; 
    display: block;
    background-size: cover;
    border-radius: 10px;
}