/* Основные стили для темной темы */
:root {
    --primary-color: #6d28d9;
    --primary-dark: #5b21b6;
    --secondary-color: #1e293b;
    --accent-color: #06b6d4;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --card-bg: #1e293b;
    --card-border: #334155;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
}

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

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 700;
    line-height: 1.2;
    background: linear-gradient(135deg, #8b5cf6, #06b6d4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.6;
}

/* Стили для блока инструкций */
.generation-instructions-container {
    padding: 5rem 0;
    background: var(--darker-bg);
    position: relative;
    overflow: hidden;
}

.generation-instructions-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.instruction-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.instruction-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--card-border);
}

.instruction-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    border-color: var(--primary-color);
}

.card-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 4rem;
    font-weight: 800;
    color: rgba(109, 40, 217, 0.1);
    line-height: 1;
}

.card-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.instruction-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    grid-column: 1 / -1;
}

.instruction-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--card-border);
}

.instruction-image img {
    width: 100%;
    aspect-ratio: 1/1;
    display: block;
    transition: var(--transition);
}

.instruction-card:hover .instruction-image img {
    transform: scale(1.03);
}

.instruction-text {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.instruction-text ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.instruction-text li {
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.accent-link {
    color: var(--accent-color);
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.accent-link:hover {
    border-bottom-color: var(--accent-color);
}

.cta-banner {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: cover;
}

.cta-banner h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-banner p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-button {
    display: inline-block;
    background: white;
    color: var(--primary-color);
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 1;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

/* Стили для блока преимуществ */
.features-container {
    padding: 2rem 0;
    background: var(--dark-bg);
    position: relative;
}

.features-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
}

.feature-icon img {
    width: 40px;
    height: 40px;
    filter: invert(48%) sepia(90%) saturate(1500%) hue-rotate(210deg) brightness(90%) contrast(90%);
}

.feature-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.feature-card p {
    line-height: 1.6;
    color: var(--text-muted);
}

/* Стили для таблицы сравнения */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.comparison-section {
    padding: 5rem 0;
    background: var(--darker-bg);
    position: relative;
}

.comparison-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #f8fafc;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Стили для десктопной таблицы */
.comparison-table {
    width: 100%;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    border: 1px solid var(--card-border);
    border-collapse: collapse;
}

.table-header {
    background: var(--secondary-color);
    color: white;
    font-weight: 700;
}

.table-row {
    border-bottom: 1px solid var(--card-border);
}

.table-row:last-child {
    border-bottom: none;
}

.table-cell {
    padding: 1.5rem;
    text-align: left;
}

.criteria {
    font-weight: 600;
    background: rgba(30, 41, 59, 0.5);
}

.ai-option, .human-option {
    text-align: center;
}

.option-badge {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: inline-block;
}

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

.human-badge {
    background: var(--text-muted);
    color: white;
}

.option-desc {
    font-size: 0.9rem;
    opacity: 0.8;
    display: block;
}

.table-conclusion {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--box-shadow);
    border: 1px solid var(--card-border);
}

.table-conclusion h3 {
    color: var(--success-color);
    margin-bottom: 1rem;
}

.table-conclusion p {
    color: var(--text-muted);
}

.mobile-comparison {
    display: none;
}

.comparison-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    border: 1px solid var(--card-border);
}

.card-header {
    padding: 1.25rem;
    background: var(--secondary-color);
    color: white;
    font-weight: 700;
    text-align: center;
}

.card-row {
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--card-border);
}

.card-row:last-child {
    border-bottom: none;
}

.card-criteria {
    font-weight: 600;
    color: var(--text-muted);
}

.card-value {
    text-align: right;
    flex: 1;
    max-width: 60%;
}

.ai-value {
    color: #f8fafc;
}

.human-value {
    color: #f8fafc;
}

.faq-container {
    padding: 2rem 0;
    background: var(--dark-bg);
    position: relative;
}

.faq-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.faq-container .section-subtitle {
    margin-bottom: 15px;
}

.faq-grid {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-color);
}

.faq-question {
    background: var(--secondary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
    list-style: none;
    position: relative;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::marker {
    display: none;
}

.faq-question:hover {
    background: rgba(30, 41, 59, 0.8);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--text-color);
    width: 90%;
}

.faq-toggle {
    font-size: 1.5rem;
    font-weight: 300;
    transition: var(--transition);
    color: var(--accent-color);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.faq-item[open] .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    font-size: 1.125rem;
}

.faq-item[open] .faq-answer {
    max-height: 500px;
    padding-left: 12px;
    padding-top: 12px;
}

.faq-answer p {
    margin: 0;
    line-height: 1.4;
    padding-left: 0;
    color: var(--text-muted);
}

.faq-answer a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.faq-answer a:hover {
    border-bottom-color: var(--accent-color);
}

.faq-item[open] .faq-question {
    border-bottom: 1px solid var(--card-border);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-item[open] .faq-answer p {
    animation: slideDown 0.3s ease;
}

@media (max-width: 768px) {
    .faq-container {
        margin: 10px auto 0;
        width: 100%;
    }
    .faq-question {

    }

    .faq-question h3 {
        font-size: 1.0625rem;
        width: 85%;
    }

    .faq-answer p {
        font-size: 1rem;
    }

    .faq-item[open] .faq-answer {

    }
}

/* Стили для отзывов */
.reviews-section {
    padding: 5rem 0;
    background: var(--darker-bg);
    position: relative;
}

.reviews-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.review-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.review-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

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

.user-avatar {
    width: 50px;
    aspect-ratio: 1/1;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 1rem;
}

.user-info {
    display: flex;
    flex-direction: column;
    max-width: 290px;
}

.username {
    font-weight: 700;
    color: var(--text-color);
}

.user-course {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.star {
    color: #374151;
    background: none;
}

.star.active {
    color: gold;
}

.review-content {
    margin-bottom: 1rem;
    line-height: 1.5;
    color: var(--text-muted);
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.review-footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.review-verified {
    color: var(--success-color);
    font-weight: 600;
}

.reviews-cta {
    text-align: center;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    border: 1px solid var(--card-border);
}

.reviews-cta p {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.75rem;
    }

    .card-content {
        grid-template-columns: 1fr;
    }

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

    .table-header, .table-row {
        grid-template-columns: 1fr;
    }

    .table-cell {
        padding: 1rem;
    }

    .criteria {
        background: rgba(30, 41, 59, 0.7);
        font-weight: 700;
    }

    .comparison-table {
        display: none;
    }

    .mobile-comparison {
        display: block;
    }


    .section-subtitle {
        font-size: 1rem;
    }

    .comparison-section {
        padding: 3rem 0;
    }
}

@media (max-width: 480px) {
    .section-subtitle {
        margin-bottom: 12px;
    }
    .generation-instructions-container {
        padding: 2rem 0;
    }
    .feature-card {
        padding: 12px;
    }
    .feature-icon {
        margin-bottom: 12px;
    }
    .feature-card h3 {
        font-size: 1.25rem;
        margin-top: 15px;
        margin-bottom: 12px;
    }
    .comparison-section {
        padding: 1rem 0;
    }
    .instruction-card {
        padding: 12px;
    }
    .card-content {
        gap: 12px
    }
    .instruction-card h3 {
        margin-bottom: 0;
        margin-top: 15px;
        font-size: 1.25rem;
    }
    .instruction-text {
        font-size: 1.0625rem;
    }
    .card-number {
        font-size: 1.75rem;
    }
    .card-row {
        flex-direction: column;
    }
    .card-value {
        max-width: 100%;
        text-align: left;
        margin-top: 0.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
    .table-conclusion {
        padding: 12px;
    }
    .cta-banner {
        padding: 15px;
    }
    .cta-banner h3 {
        font-size: 1.5rem;
    }
    .reviews-cta {
        padding: 10px;
    }
    .reviews-cta p {
        font-size: 1.0625rem;
    }
    .review-card {
        padding: 12px;
    }
    .review-header {
        flex-wrap: wrap;
        flex-direction: column;
    }
    .user-info {
        align-self: start;
        margin-top: 8px;
        margin-bottom: 0;
    }
    .review-verified {
        display: none;
    }

}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.instruction-card, .feature-card, .review-card {
    animation: fadeIn 0.5s ease forwards;
}

.instruction-card:nth-child(2) { animation-delay: 0.1s; }
.instruction-card:nth-child(3) { animation-delay: 0.2s; }
.instruction-card:nth-child(4) { animation-delay: 0.3s; }
.instruction-card:nth-child(5) { animation-delay: 0.4s; }

.faq-item.active .faq-answer {
    display: block;
}