/* styles.css */
:root {
    /* Цвета */
    --primary-color: #4a6bff;
    --primary-hover: #3a56d4;
    --secondary-color: #6c757d;
    --accent-color: #ff6b6b;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --text-color: #333;
    --text-light: #6c757d;
    --bg-color: #ffffff;
    --border-color: #e9ecef;
    
    /* Шрифты */
    --font-main: 'Montserrat', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    
    /* Тени */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    /* Радиусы */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Отступы */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-xxl: 64px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-main);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-sm);
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--space-xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: var(--space-sm) auto 0;
}

.button {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.button--primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.button--large {
    padding: var(--space-sm) var(--space-lg);
    font-size: 1.1rem;
}

/* Шапка */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-color);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    padding: var(--space-sm) 0;
}

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

.header__logo-img {
    height: 40px;
    width: auto;
}

.header__nav-list {
    display: flex;
    gap: var(--space-lg);
}

.header__nav-link {
    font-family: var(--font-main);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.header__nav-link:hover {
    color: var(--primary-color);
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.header__burger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--dark-color);
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* Герой */
.hero {
    padding: var(--space-xxl) 0;
    margin-top: 72px; /* Учитываем высоту шапки */
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
}

.hero__container {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.hero__content {
    flex: 1;
}

.hero__title {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    color: var(--dark-color);
}

.hero__subtitle {
    font-size: 1.2rem;
    margin-bottom: var(--space-lg);
    color: var(--text-light);
}

.hero__cta {
    margin-bottom: var(--space-sm);
}

.hero__note {
    font-size: 0.9rem;
}

.hero__note-accent {
    color: var(--accent-color);
    font-weight: 700;
}

.hero__image {
    flex: 1;
}

.hero__img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease;
}

.hero__img:hover {
    transform: scale(1.02);
}

/* Преимущества */
.features {
    padding: var(--space-xxl) 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.feature-card {
    text-align: center;
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    background-color: var(--bg-color);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.feature-card.animated {
    opacity: 1;
    transform: translateY(0);
}

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

.feature-card__icon {
    margin-bottom: var(--space-md);
}

.feature-card__icon img {
    margin: 0 auto;
}

.feature-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--primary-color);
}

.feature-card__text {
    color: var(--text-light);
}

/* Отзывы */
.reviews {
    padding: var(--space-xxl) 0;
    background-color: var(--light-color);
}

.reviews__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.review-card {
    background-color: var(--bg-color);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.review-card.animated {
    opacity: 1;
    transform: translateY(0);
}

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

.review-card__header {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-md);
}

.review-card__avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: var(--space-sm);
}

.review-card__avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.review-card__name {
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.review-card__position {
    font-size: 0.8rem;
    color: var(--text-light);
}

.review-card__content {
    font-style: italic;
    color: var(--text-color);
}

/* FAQ */
.faq {
    padding: var(--space-xxl) 0;
}

.faq__accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    margin-bottom: var(--space-sm);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.faq__item.animated {
    opacity: 1;
    transform: translateY(0);
}

.faq__question {
    width: 100%;
    padding: var(--space-md);
    text-align: left;
    background-color: var(--bg-color);
    border: none;
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq__question:hover {
    background-color: var(--light-color);
}

.faq__question::after {
    content: '+';
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq__item.active .faq__question::after {
    content: '-';
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background-color: var(--light-color);
}

.faq__item.active .faq__answer {
    max-height: 500px;
}

.faq__answer div {
    padding: var(--space-md);
}

/* CTA */
.cta {
    padding: var(--space-xxl) 0;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.cta__container {
    max-width: 800px;
}

.cta__title {
    font-size: 2rem;
    margin-bottom: var(--space-md);
    color: white;
}

.cta__subtitle {
    font-size: 1.2rem;
    margin-bottom: var(--space-lg);
    opacity: 0.9;
}

.cta__benefits {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.cta__benefit-item {
    position: relative;
    font-weight: 500;
}

.cta__benefit-item::before {
    content: '✓';
    margin-right: var(--space-xs);
}

/* Подвал */
.footer {
    padding: var(--space-xl) 0;
    background-color: var(--dark-color);
    color: white;
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.footer__logo-link img {
    filter: brightness(0) invert(1);
}

.footer__info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__copyright {
    opacity: 0.7;
    font-size: 0.9rem;
}

.footer__email {
    color: white;
    transition: opacity 0.3s ease;
}

.footer__email:hover {
    opacity: 0.8;
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer__link {
    color: white;
    opacity: 0.7;
    transition: opacity 0.3s ease;
    font-size: 0.9rem;
}

.footer__link:hover {
    opacity: 1;
}

/* Анимации */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Адаптивность */
@media (max-width: 992px) {
    .hero__container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero__content {
        margin-bottom: var(--space-xl);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .cta__benefits {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 768px) {
    .header__nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background-color: var(--bg-color);
        box-shadow: var(--shadow-md);
        padding: var(--space-md);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }
    
    .header__nav.active {
        transform: translateY(0);
    }
    
    .header__nav-list {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .header__burger {
        display: block;
    }
    
    .header__burger.active .header__burger-line:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .header__burger.active .header__burger-line:nth-child(2) {
        opacity: 0;
    }
    
    .header__burger.active .header__burger-line:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__subtitle {
        font-size: 1rem;
    }
    
    .feature-card {
        padding: var(--space-md);
    }
}

@media (max-width: 576px) {
    :root {
        --space-xl: 32px;
        --space-xxl: 48px;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: var(--space-lg);
    }
    
    .hero {
        padding: var(--space-xl) 0;
    }
    
    .features, .reviews, .faq {
        padding: var(--space-xl) 0;
    }
    
    .cta__title {
        font-size: 1.5rem;
    }
}