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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --accent: #8b5cf6;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --text: #334155;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --border: #e2e8f0;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text);
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    height: 72px;
}

.logo {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 900;
}

.logo span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-size: 14px;
    line-height: 1.5;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    padding-top: 72px;
    width: 100%;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 64px;
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.hero h1 .accent {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 22px;
    margin-bottom: 48px;
    opacity: 0.95;
    font-weight: 400;
}

.hero .btn {
    font-size: 18px;
    padding: 16px 40px;
    background: white;
    color: var(--primary);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.hero .btn:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 50px rgba(0,0,0,0.3);
}

/* Services */
.services {
    padding: 120px 24px;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 64px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.service-card {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 60px rgba(99, 102, 241, 0.15);
}

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

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 24px;
    color: white;
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.service-card h3 {
    font-size: 26px;
    margin-bottom: 16px;
    color: var(--dark);
    font-weight: 700;
}

.service-card > p {
    margin-bottom: 24px;
    color: var(--text);
    line-height: 1.7;
    flex-grow: 1;
}

.service-features {
    list-style: none;
    padding: 0;
    margin-bottom: 32px;
}

.service-features li {
    padding: 10px 0;
    padding-left: 32px;
    position: relative;
    color: var(--text);
    font-size: 15px;
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    font-size: 20px;
    width: 24px;
    height: 24px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* About */
.about {
    padding: 120px 24px;
    background: white;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.about-item {
    text-align: center;
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.about-item:hover {
    background: var(--bg-secondary);
}

.about-number {
    font-size: 56px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.about-item h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--dark);
    font-weight: 700;
}

.about-item p {
    color: var(--text);
    line-height: 1.6;
}

/* Footer */
footer {
    background: var(--dark);
    color: white;
    padding: 80px 24px 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-col h4 {
    font-size: 20px;
    margin-bottom: 24px;
    font-weight: 700;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s;
}

.footer-col a:hover {
    color: white;
    padding-left: 4px;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

/* Responsive */
@media (min-width: 1800px) {
    .services-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 40px;
    }
}

@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }

    .about-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 36px;
    }
}

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    nav {
        padding: 12px 16px;
        height: 60px;
    }

    .container {
        padding: 0 16px;
    }

    .logo {
        font-size: 20px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 18px;
    }

    .btn {
        padding: 8px 14px;
        font-size: 13px;
    }

    .hero {
        padding-top: 60px;
        padding-left: 16px;
        padding-right: 16px;
    }

    .hero h1 {
        font-size: 38px;
    }

    .hero-subtitle {
        font-size: 17px;
    }

    .hero .btn {
        font-size: 16px;
        padding: 14px 32px;
    }

    .section-title {
        font-size: 32px;
    }

    .section-subtitle {
        font-size: 16px;
    }

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

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

    .services {
        padding: 80px 16px;
    }

    .about {
        padding: 80px 16px;
    }

    .service-card {
        padding: 32px 24px;
    }

    footer {
        padding: 60px 16px 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 32px;
    }
}

@media (max-width: 360px) {
    nav {
        padding: 10px 12px;
        height: 56px;
    }

    .container {
        padding: 0 12px;
    }

    .logo {
        font-size: 18px;
    }

    .logo-icon {
        width: 28px;
        height: 28px;
        font-size: 16px;
    }

    .btn {
        padding: 7px 12px;
        font-size: 12px;
    }

    .hero {
        padding-top: 56px;
        padding-left: 12px;
        padding-right: 12px;
        min-height: 90vh;
    }

    .hero h1 {
        font-size: 28px;
        margin-bottom: 16px;
    }

    .hero-subtitle {
        font-size: 15px;
        margin-bottom: 28px;
    }

    .hero .btn {
        font-size: 15px;
        padding: 12px 28px;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 12px;
    }

    .section-subtitle {
        font-size: 15px;
        margin-bottom: 48px;
    }

    .services {
        padding: 60px 12px;
    }

    .about {
        padding: 60px 12px;
    }

    .service-card {
        padding: 28px 20px;
    }

    .service-icon {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }

    .service-card h3 {
        font-size: 22px;
    }

    .about-number {
        font-size: 48px;
    }

    .about-item h3 {
        font-size: 20px;
    }

    .about-item {
        padding: 24px 16px;
    }

    .about-grid {
        gap: 32px;
    }

    footer {
        padding: 48px 12px 20px;
    }

    .footer-content {
        gap: 32px;
    }

    .footer-col h4 {
        font-size: 18px;
        margin-bottom: 16px;
    }
}