/* style.css */
:root {
    /* Строгая монохромная палитра */
    --black: #000000;
    --dark-gray: #1a1a1a;
    --medium-gray: #333333;
    --light-gray: #666666;
    --lighter-gray: #999999;
    --lightest-gray: #cccccc;
    --white: #ffffff;
    --off-white: #f5f5f5;
    --card-bg: rgba(255, 255, 255, 0.95);
    --transition: all 0.3s ease;
    --shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 6px 12px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --border: 1px solid var(--lightest-gray);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background: var(--off-white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Шапка */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    width: 36px;
    height: 36px;
    background: var(--black);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: 16px;
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.5px;
}

/* Герой-секция */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 15px;
    position: relative;
    overflow: hidden;
    background: image(kraken.png);
}

.hero-content {
    max-width: 750px;
    text-align: center;
    padding: 2.5rem;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    animation: fadeInUp 0.8s ease-out;
    border: var(--border);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    color: var(--black);
    font-weight: 700;
    letter-spacing: -0.5px;
}

.links {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.link-item {
    background: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    border: var(--border);
    color: var(--black);
}

.link-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--light-gray);
}

.btn {
    display: inline-block;
    background: var(--black);
    color: var(--white);
    padding: 0.9rem 2.2rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: none;
    cursor: pointer;
    letter-spacing: -0.2px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    background: var(--dark-gray);
}

/* Преимущества */
.features {
    padding: 5rem 0 4rem;
    background: var(--white);
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--black);
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
    border: var(--border);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--lightest-gray);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.2rem;
    color: var(--black);
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--black);
    font-weight: 600;
}

/* Отзывы */
.testimonials {
    padding: 5rem 0 4rem;
    background: var(--off-white);
}

.testimonials h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--black);
    font-weight: 700;
}

.testimonials-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: var(--border);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--lightest-gray);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.avatar {
    width: 44px;
    height: 44px;
    background: var(--black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    font-size: 1rem;
}

.testimonial-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    color: var(--black);
    font-weight: 600;
}

.rating {
    color: var(--light-gray);
}

.testimonial-card p {
    font-style: normal;
    color: var(--light-gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Инструкция */
.instructions {
    padding: 5rem 0 4rem;
    background: var(--white);
}

.instructions h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--black);
    font-weight: 700;
}

.steps {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.step {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    text-align: center;
    min-width: 250px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: var(--border);
}

.step:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--lightest-gray);
}

.step-number {
    width: 44px;
    height: 44px;
    background: var(--black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 auto 1.5rem;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--black);
    font-weight: 600;
}

/* Вопросы и ответы */
.faq {
    padding: 5rem 0 4rem;
    background: var(--off-white);
}

.faq h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--black);
    font-weight: 700;
}

.faq-container {
    max-width: 750px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--white);
    border: var(--border);
}

.faq-question {
    width: 100%;
    padding: 1.4rem 1.5rem;
    background: var(--white);
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
    color: var(--black);
}

.faq-question:hover {
    background: var(--off-white);
}

.faq-question i {
    transition: var(--transition);
    color: var(--light-gray);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer p {
    padding: 0 0 1.5rem;
    color: var(--light-gray);
    font-size: 0.95rem;
    line-height: 1.7;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--black);
}

/* Описание платформы */
.about {
    padding: 5rem 0 4rem;
    background: var(--white);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.about-text {
    flex: 1;
}

.about h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--black);
    font-weight: 700;
}

.about p {
    margin-bottom: 1.5rem;
    color: var(--light-gray);
    font-size: 1.05rem;
    line-height: 1.8;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--black);
    display: block;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--light-gray);
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 380px;
    height: 280px;
    background: var(--black);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.3rem;
    font-weight: 600;
    box-shadow: var(--shadow);
}

/* Подвал */
footer {
    background: var(--black);
    color: var(--white);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo .logo-img {
    background: var(--white);
    color: var(--black);
}

.footer-logo .logo-text {
    color: var(--lightest-gray);
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--lighter-gray);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-copyright {
    color: var(--light-gray);
    text-align: center;
    width: 100%;
    font-size: 0.9rem;
}

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

/* Адаптивность */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.1rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .stats {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1rem 0;
    }
    
    .hero {
        height: auto;
        min-height: 100vh;
        padding-top: 70px;
    }
    
    .hero-content {
        padding: 2rem;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .links {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
    }
    
    .features, .testimonials, .instructions, .faq, .about {
        padding: 3.5rem 0 3rem;
    }
    
    .features h2, .testimonials h2, .instructions h2, .faq h2, .about h2 {
        font-size: 1.7rem;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .stat-item {
        flex: 1;
        min-width: 120px;
    }
}

@media (max-width: 480px) {
    .logo-text {
        font-size: 1.2rem;
    }
    
    .hero h1 {
        font-size: 1.6rem;
    }
    
    .btn {
        padding: 0.8rem 1.8rem;
        font-size: 1rem;
    }
    
    .feature-card, .testimonial-card, .step {
        padding: 1.5rem;
    }
    
    .faq-question {
        padding: 1.2rem;
        font-size: 1rem;
    }
    
    .stats {
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .image-placeholder {
        height: 220px;
    }
}

/* Плавные переходы */
.feature-card, .testimonial-card, .step, .faq-item {
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

/* Доступность */
:focus {
    outline: 2px solid var(--black);
    outline-offset: 2px;
}

/* Печать */
@media print {
    header, footer {
        display: none;
    }
    
    body {
        background: white;
    }
    
    .features, .testimonials, .instructions, .faq, .about {
        background: white;
    }
}