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

:root {
    --primary-color: #1a2332;
    --secondary-color: #4a90e2;
    --accent-color: #ff6b6b;
    --text-color: #2d3748;
    --light-bg: #f7fafc;
    --border-color: #e2e8f0;
    --success-color: #48bb78;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    --gradient-accent: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --shadow-color: 0 8px 24px rgba(102, 126, 234, 0.25);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* Шапка */
.header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 26px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    padding-bottom: 5px;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s;
}

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

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

.header-contacts {
    display: flex;
    align-items: center;
    gap: 15px;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
}

.social-link:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.15) 0%, rgba(74, 144, 226, 0.1) 100%);
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.social-link svg {
    width: 22px;
    height: 22px;
}

.phone {
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 18px;
    padding: 10px 20px;
    border-radius: 10px;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1) 0%, rgba(74, 144, 226, 0.05) 100%);
    transition: all 0.3s;
}

.phone:hover {
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.15) 0%, rgba(74, 144, 226, 0.1) 100%);
    transform: translateY(-2px);
}

/* Главный экран */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.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%);
    pointer-events: none;
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 800;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 16px 42px;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 100%);
    opacity: 0;
    transition: opacity 0.3s;
}

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

.btn-primary {
    background: var(--gradient-secondary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(74, 144, 226, 0.35);
}

.btn-secondary {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
}

.btn-secondary:hover {
    background: var(--light-bg);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary-color);
}

/* Преимущества */
.benefits {
    padding: 80px 0;
    background: var(--light-bg);
}

.benefits h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 60px;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: 100%;
}

.benefits h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.benefit-card {
    background: white;
    padding: 35px;
    border-radius: 16px;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.benefit-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s;
}

.benefit-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

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

.benefit-icon {
    font-size: 56px;
    margin-bottom: 20px;
    display: inline-block;
    transition: transform 0.3s;
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1) rotate(5deg);
}

.benefit-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.benefit-card p {
    color: #666;
    line-height: 1.6;
}

/* Как это работает */
.how-it-works {
    padding: 80px 0;
}

.how-it-works h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 60px;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: 100%;
}

.how-it-works h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

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

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    margin: 0 auto 20px;
    box-shadow: var(--shadow-color);
    transition: transform 0.3s;
}

.step:hover .step-number {
    transform: scale(1.1);
}

.step h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.step p {
    color: #666;
}

/* Калькулятор */
.calculator {
    padding: 80px 0;
    background: var(--light-bg);
}

.calculator h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: 100%;
}

.calculator h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
    font-size: 18px;
}

.calculator-wrapper {
    background: white;
    border-radius: 20px;
    padding: 45px;
    box-shadow: var(--shadow-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    border: 1px solid var(--border-color);
}

.calculator-inputs {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.input-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.input-group input,
.input-group textarea {
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s;
    background: var(--light-bg);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.input-group small {
    color: #999;
    margin-top: 5px;
    font-size: 14px;
}

.calculator-result {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    padding: 35px;
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.calculator-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.calculator-result h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--primary-color);
    text-align: center;
}

.price-breakdown {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.price-item {
    display: flex;
    justify-content: space-between;
    font-size: 16px;
}

.price-item span:first-child {
    color: #666;
}

.price-item span:last-child {
    font-weight: 600;
    color: var(--text-color);
}

.price-total {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 48px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 20px 0;
    padding: 20px 0;
    text-shadow: 0 2px 10px rgba(102, 126, 234, 0.2);
}

.price-note {
    font-size: 14px;
    color: #666;
    text-align: center;
    margin-top: 10px;
    line-height: 1.5;
}

/* Примеры работ */
.examples {
    padding: 80px 0;
}

.examples h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 60px;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: 100%;
}

.examples h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.example-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color);
}

.example-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.example-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.example-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.example-info {
    padding: 20px;
}

.example-info h3 {
    font-size: 20px;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.example-info p {
    color: #666;
}

.examples-note {
    text-align: center;
    color: #999;
    font-style: italic;
    margin-top: 20px;
}

/* Форма контактов */
.contact {
    padding: 80px 0;
    background: var(--light-bg);
}

.contact h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    display: inline-block;
    width: 100%;
}

.contact h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.contact-form {
    max-width: 800px;
    margin: 0 auto 40px;
    background: white;
    padding: 45px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

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

.contact-form button {
    width: 100%;
    margin-top: 10px;
}

.contact-info {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 20px;
}

.contact-item {
    text-align: center;
}

.contact-item strong {
    display: block;
    margin-bottom: 5px;
    color: var(--primary-color);
}

.contact-item a {
    color: var(--secondary-color);
    text-decoration: none;
}

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

/* Подвал */
.footer {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 30px 0;
}

/* Адаптивность */
@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .header-contacts {
        gap: 10px;
    }

    .social-link {
        width: 40px;
        height: 40px;
    }

    .social-link svg {
        width: 20px;
        height: 20px;
    }

    .phone {
        font-size: 16px;
        padding: 8px 16px;
    }

    .hero {
        padding: 80px 0;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

    .benefits h2,
    .how-it-works h2,
    .calculator h2,
    .examples h2,
    .contact h2 {
        font-size: 32px;
    }

    .calculator-wrapper,
    .contact-form {
        padding: 30px 25px;
    }

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

    .contact-form {
        padding: 30px 20px;
    }
}

/* Анимации */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.benefit-card {
    animation: fadeIn 0.6s ease-out;
}

.benefit-card:nth-child(1) { animation-delay: 0.1s; }
.benefit-card:nth-child(2) { animation-delay: 0.2s; }
.benefit-card:nth-child(3) { animation-delay: 0.3s; }
.benefit-card:nth-child(4) { animation-delay: 0.4s; }
.benefit-card:nth-child(5) { animation-delay: 0.5s; }
.benefit-card:nth-child(6) { animation-delay: 0.6s; }

.step {
    animation: scaleIn 0.5s ease-out;
}

.step:nth-child(1) { animation-delay: 0.1s; }
.step:nth-child(2) { animation-delay: 0.2s; }
.step:nth-child(3) { animation-delay: 0.3s; }
.step:nth-child(4) { animation-delay: 0.4s; }

.example-card {
    animation: fadeIn 0.6s ease-out;
}

.example-card:nth-child(1) { animation-delay: 0.1s; }
.example-card:nth-child(2) { animation-delay: 0.2s; }
.example-card:nth-child(3) { animation-delay: 0.3s; }

/* Плавное появление секций */
.hero,
.benefits,
.how-it-works,
.calculator,
.examples,
.contact {
    animation: fadeIn 0.8s ease-out;
}