/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: #ffffff;
    color: #1a1a1a;
    line-height: 1.6;
}

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

/* Header Styles */
.header {
    background-color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header__logo-link {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.header__logo-link:hover {
    color: #1d4ed8;
}

.header__nav {
    display: flex;
}

.header__nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.header__nav-link {
    color: #4b5563;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.header__nav-link:hover {
    color: #2563eb;
}

.header__nav-link--active {
    color: #2563eb;
}

.header__nav-link--active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #2563eb;
}

/* Burger Menu */
.header__burger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    transition: all 0.3s ease;
}

.header__burger-line {
    width: 25px;
    height: 3px;
    background-color: #1a1a1a;
    margin: 3px 0;
    transition: all 0.3s ease;
}

.header__burger--active .header__burger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.header__burger--active .header__burger-line:nth-child(2) {
    opacity: 0;
}

.header__burger--active .header__burger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Main Content */
.main {
    margin-top: 70px;
    padding: 2rem 0;
}

/* Article Styles */
.article {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
}

.article__header {
    margin-bottom: 2rem;
}

.article__title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article__subtitle {
    font-size: 1.75rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 2rem 0 1rem;
    line-height: 1.3;
}

.article__subtitle-small {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 1.5rem 0 1rem;
    line-height: 1.3;
}

.article__text {
    font-size: 1rem;
    line-height: 1.8;
    color: #374151;
    margin-bottom: 1.5rem;
}

.article__section {
    margin-bottom: 3rem;
}

.article__image {
    margin: 2rem 0;
    text-align: center;
}

.article__img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Table Styles */
.article__table-container {
    margin: 2rem 0;
    overflow-x: auto;
}

.article__table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.article__table th,
.article__table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.article__table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #1a1a1a;
}

.article__table tr:hover {
    background-color: #f8fafc;
}

/* List Styles */
.article__list {
    margin: 2rem 0;
}

.article__list-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
}

.article__list-items {
    list-style: none;
    padding: 0;
}

.article__list-item {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #374151;
    line-height: 1.7;
}

.article__list-item::before {
    content: '•';
    color: #2563eb;
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* FAQ Styles */
.faq__item {
    margin-bottom: 2rem;
    background-color: #f8fafc;
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.faq__item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.faq__question {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 1rem;
    cursor: pointer;
}

.faq__answer p {
    color: #374151;
    line-height: 1.8;
}

/* Contact Info Styles */
.contact-info {
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.contact-info .article__text {
    margin-bottom: 0.5rem;
}

.contact-info .article__text:last-child {
    margin-bottom: 0;
}

/* Social Links */
.social-links {
    margin: 1.5rem 0;
}

.social-links__list {
    display: flex;
    gap: 1rem;
    list-style: none;
}

.social-links__link {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: #2563eb;
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-links__link:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
}

/* Footer Styles */
.footer {
    background-color: #1a1a1a;
    color: #ffffff;
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

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

.footer__text {
    font-size: 0.9rem;
    color: #d1d5db;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .header__container {
        padding: 0 15px;
    }
    
    .article__title {
        font-size: 2rem;
    }
    
    .article__subtitle {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .header__nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        padding: 1rem 0;
    }
    
    .header__nav--active {
        display: flex;
    }
    
    .header__nav-list {
        flex-direction: column;
        gap: 0;
        width: 100%;
    }
    
    .header__nav-item {
        border-bottom: 1px solid #e5e7eb;
    }
    
    .header__nav-item:last-child {
        border-bottom: none;
    }
    
    .header__nav-link {
        display: block;
        padding: 1rem 20px;
        width: 100%;
    }
    
    .header__burger {
        display: flex;
    }
    
    .article__title {
        font-size: 1.75rem;
    }
    
    .article__subtitle {
        font-size: 1.25rem;
    }
    
    .article__subtitle-small {
        font-size: 1.1rem;
    }
    
    .social-links__list {
        flex-direction: column;
        align-items: center;
    }
    
    .social-links__link {
        width: 200px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .header__container {
        padding: 0 10px;
    }
    
    .article__title {
        font-size: 1.5rem;
    }
    
    .article__subtitle {
        font-size: 1.1rem;
    }
    
    .article__subtitle-small {
        font-size: 1rem;
    }
    
    .article__text {
        font-size: 0.9rem;
    }
    
    .article__table {
        font-size: 0.8rem;
    }
    
    .article__table th,
    .article__table td {
        padding: 0.5rem;
    }
    
    .faq__item {
        padding: 1rem;
    }
    
    .faq__question {
        font-size: 1rem;
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus States for Accessibility */
.header__nav-link:focus,
.header__burger:focus,
.social-links__link:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

/* Animation for mobile menu */
.header__nav {
    transition: all 0.3s ease;
}

/* Hover effects */
.faq__item:hover .faq__question {
    color: #2563eb;
}