/* Базовые стили */
:root {
    --primary-color: #0f172a;
    --secondary-color: #3b82f6;
    --accent-color: #10b981;
    --text-color: #334155;
    --light-color: #f8fafc;
    --dark-color: #0f172a;
    --border-radius: 12px;
    --card-radius: 20px;
    --button-radius: 30px;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --gradient-primary: linear-gradient(135deg, #3b82f6, #10b981);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1.1;
}

.section-subtitle {
    display: block;
    text-align: center;
    font-size: 1.125rem;
    color: #ebebeb;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    padding: 16px 32px;
    border-radius: var(--button-radius);
    transition: var(--transition);
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #10b981, #3b82f6);
    opacity: 0;
    z-index: -1;
    transition: var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.btn i {
    margin-left: 8px;
}

/* Заголовок */
header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 10px 0;
}

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

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}

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

nav ul {
    display: flex;
    gap: 30px;
}

nav ul li a {
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
}

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

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* Секция Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(circle at 10% 20%, rgba(15, 23, 42, 0.02) 0%, rgba(59, 130, 246, 0.05) 100%), url('../images/hero-bg.svg');
    background-size: cover;
    background-position: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.6) 0%, rgba(15, 23, 42, 0.3) 100%);
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}

.hero h1 {
    font-size: 4rem;
    font-weight: 800;
    color: white;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero h2 {
    font-size: 1.5rem;
    margin-bottom: 40px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.8;
    transition: var(--transition);
    cursor: pointer;
}

.hero-scroll:hover {
    opacity: 1;
    transform: translate(-50%, -5px);
}

.hero-scroll i {
    font-size: 2rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Секция Услуги */
.services {
    padding: 120px 0;
    background-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 40px;
}

.service-card {
    background-color: white;
    border-radius: var(--card-radius);
    padding: 40px 30px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
    z-index: -1;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: 50%;
}

.service-card i {
    font-size: 2.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 600;
}

.service-card p {
    color: var(--text-color);
    margin-bottom: 25px;
}

.service-link {
    font-weight: 600;
    color: var(--secondary-color);
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.service-link i {
    font-size: 1rem;
    margin-left: 5px;
    transition: var(--transition);
    color: var(--secondary-color);
}

.service-link:hover {
    color: var(--accent-color);
}

.service-link:hover i {
    transform: translateX(5px);
    color: var(--accent-color);
}

/* Секция О нас */
.about {
    padding: 120px 0;
    background-color: var(--light-color);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(16, 185, 129, 0.05));
    top: -200px;
    left: -200px;
    z-index: 0;
}

.about::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), rgba(59, 130, 246, 0.05));
    bottom: -100px;
    right: -100px;
    z-index: 0;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    position: relative;
    z-index: 1;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text p {
    margin-bottom: 25px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.about-stats {
    flex: 1;
    min-width: 300px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.stat {
    background-color: white;
    padding: 30px;
    border-radius: var(--card-radius);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.stat::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    z-index: -1;
    transform: scale(1.05);
    opacity: 0;
    border-radius: inherit;
    transition: var(--transition);
}

.stat:hover::before {
    opacity: 1;
    transform: scale(1);
}

.stat:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat:hover .stat-number,
.stat:hover .stat-text {
    color: white;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
    transition: var(--transition);
    line-height: 1;
}

.stat-text {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 500;
    transition: var(--transition);
}

/* Секция Контакты */
.contact {
    padding: 120px 0;
    background-color: white;
    position: relative;
}

.contact-content-centered {
    display: flex;
    flex-wrap: wrap;
    gap: 60px;
    justify-content: center;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    width: 100%;
}

.contact-item {
    display: flex;
    align-items: center;
    padding: 25px;
    background-color: white;
    border-radius: var(--card-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    margin-right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
    border-radius: 50%;
    flex-shrink: 0;
}

.contact-item i {
    font-size: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.contact-item p {
    color: var(--text-color);
    font-weight: 500;
}

.contact-cta {
    text-align: center;
    padding: 40px;
    background-color: white;
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
    max-width: 800px;
    margin: 30px auto 0;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.contact-cta:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.contact-cta h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-cta p {
    margin-bottom: 25px;
    color: var(--text-color);
}

.contact-cta .btn {
    margin-top: 10px;
}

/* Футер */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 80px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    flex: 1;
    min-width: 250px;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 20px;
}

.footer-logo span {
    color: var(--secondary-color);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-logo p {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-primary);
    transform: translateY(-5px);
}

.footer-nav {
    flex: 1;
    min-width: 200px;
}

.footer-nav h3 {
    font-size: 1.2rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-nav h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--gradient-primary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
}

.footer-links a i {
    margin-right: 8px;
    font-size: 0.8rem;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* Анимация при прокрутке */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.fade-in-up.show {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.fade-in-left.show {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.fade-in-right.show {
    opacity: 1;
    transform: translateX(0);
}

/* Активная ссылка в навигации */
nav ul li a.active {
    color: var(--secondary-color);
}

/* Медиа-запросы */
@media (max-width: 992px) {
    .section-title {
        font-size: 2.5rem;
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .hero h2 {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    nav {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        padding: 20px;
        box-shadow: var(--shadow-md);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition);
        height: auto;
    }
    
    nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }
    
    nav ul {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul li {
        width: 100%;
    }
    
    nav ul li a {
        display: block;
        padding: 10px 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero h2 {
        font-size: 1.1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
}