:root {
    --primary-blue: #0f2a44;
    --accent-blue: #4fc3f7;
    --accent-green: #00c853;
    --accent-cyan: #00bcd4;
    --dark-bg: #0a1929;
    --light-text: #e0f7fa;
    --card-bg: rgba(15, 42, 68, 0.6);
}

body {
    background: var(--dark-bg);
    color: var(--light-text);
}

/* ГЕРОЙ СЕКЦИЯ */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, 
        rgba(10, 25, 41, 0.9) 0%,
        rgba(15, 42, 68, 0.8) 100%),
        url('https://images.unsplash.com/photo-1473968512647-3e447244af8f?auto=format&fit=crop&w=1920');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, 
        rgba(79, 195, 247, 0.1) 0%, 
        transparent 50%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 20px 60px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(79, 195, 247, 0.2);
    color: var(--accent-blue);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 30px;
    border: 1px solid rgba(79, 195, 247, 0.3);
}

.hero-title {
    font-size: 4em;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.4em;
    color: rgba(224, 247, 250, 0.9);
    max-width: 700px;
    margin-bottom: 40px;
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--accent-blue);
}

.feature-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #0288d1);
    color: white;
    box-shadow: 0 10px 30px rgba(79, 195, 247, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(79, 195, 247, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

/* СЕКЦИИ */
section {
    padding: 100px 20px;
}

.section-title {
    text-align: center;
    font-weight: 700;
    margin-bottom: 60px;
    color: white;
}

.section-title span {
    color: var(--accent-blue);
}

/* ВОЗМОЖНОСТИ */
.features {
    background: rgba(10, 25, 41, 0.5);
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 40px 30px;
    border: 1px solid rgba(79, 195, 247, 0.1);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-blue);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card-icon {
    width: 60px;
    height: 60px;
    background: rgba(79, 195, 247, 0.1);
    border-radius: 12px;
    display: flex;
    float: right;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 24px;
    color: var(--accent-blue);
}

.feature-card h3 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: white;
}

.feature-card p {
    color: rgba(224, 247, 250, 0.8);
}

/* КЕЙСЫ */
.use-cases {
    background: linear-gradient(135deg, 
        rgba(15, 42, 68, 0.8) 0%,
        rgba(10, 25, 41, 0.9) 100%);
}

.cases-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: 30px;
}

.case-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid rgba(79, 195, 247, 0.1);
    transition: all 0.3s;
}

.case-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, 
        rgba(79, 195, 247, 0.2), 
        rgba(0, 200, 83, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: var(--accent-blue);
}

.case-content {
    padding: 30px;
}

.case-tag {
    display: inline-block;
    background: rgba(79, 195, 247, 0.1);
    color: var(--accent-blue);
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 12px;
    margin-bottom: 15px;
}

.case-content h3 {
    font-size: 1.4em;
    margin-bottom: 10px;
    color: white;
}

/* ТАРИФЫ */
.pricing {
    background: rgba(10, 25, 41, 0.5);
}

.pricing-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.pricing-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 40px 30px;
    border: 2px solid rgba(79, 195, 247, 0.2);
    text-align: center;
    transition: all 0.3s;
}

.pricing-card.popular {
    border-color: var(--accent-blue);
    transform: scale(1.05);
    position: relative;
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-blue);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 20px 40px rgba(79, 195, 247, 0.1);
}

.pricing-header {
    margin-bottom: 30px;
}

.pricing-name {
    font-size: 1.5em;
    font-weight: 700;
    color: white;
    margin-bottom: 10px;
}

.pricing-price {
    font-size: 3em;
    font-weight: 800;
    color: var(--accent-blue);
    margin-bottom: 5px;
}

.pricing-period {
    color: rgba(224, 247, 250, 0.6);
}

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    color: rgba(224, 247, 250, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* ФУТЕР */
footer {
    background: rgba(10, 25, 41, 0.9);
    border-top: 1px solid rgba(79, 195, 247, 0.1);
}

.footer-column h4 {
    color: var(--accent-blue);
}

.footer-column a, .footer-column div {
    color: rgba(224, 247, 250, 0.8);
}

.footer-column a:hover {
    color: var(--accent-blue);
}

.copyright {
    color: rgba(224, 247, 250, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* АДАПТИВНОСТЬ */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2em;
    }

    .hero-subtitle {
        font-size: 1em;
        text-align: justify;
    }

    .hero-container {
        padding: 100px 8px 60px;
    }

    .cta-buttons {
        display: grid;
    }

    section {
        padding: 50px 8px;
    }
    
    .section-title {
        font-size: 2.5em;
    }
}

@media (max-width: 480px) {
    .cta-buttons {
        flex-direction: column;
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 2.5em;
    }
    
    .hero-subtitle {
        font-size: 1.2em;
    }
    
    .section-title {
        font-size: 2.8em;
    }
    
    .btn {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .pricing-card.popular {
        transform: none;
    }

    .cases-grid {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 4em;
    }
}