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

:root {
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-premium: #7c3aed;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg-alt);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
}

.header {
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    gap: 1rem;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.nav {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-link {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    border-radius: 0.375rem;
    transition: background-color 0.2s;
}

.nav-link:hover {
    background-color: var(--color-bg-alt);
}

.nav-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.nav-link-subscribe {
    background-color: var(--color-primary);
    color: white;
}

.nav-link-subscribe:hover {
    background-color: var(--color-primary-hover);
}

.main {
    flex: 1;
    padding: 2rem 0;
}

.front-page {
    animation: fadeIn 0.3s ease-in;
}

.hero {
    background-color: var(--color-bg);
    padding: 3rem 2rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.hero-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero-text {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.article-card {
    background-color: var(--color-bg);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.article-card-premium {
    border: 2px solid var(--color-premium);
}

.article-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-primary);
    background-color: #dbeafe;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    margin-bottom: 0.75rem;
}

.article-badge-premium {
    background-color: #ede9fe;
    color: var(--color-premium);
}

.article-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.article-excerpt {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.article-read-more {
    background: none;
    border: none;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 0;
    transition: color 0.2s;
}

.article-read-more:hover {
    color: var(--color-primary-hover);
}

.article-read-more:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.article-view {
    animation: fadeIn 0.3s ease-in;
}

.back-button {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    padding: 0.5rem 0;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.back-button:hover {
    color: var(--color-primary-hover);
}

.back-button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.article-content {
    background-color: var(--color-bg);
    padding: 3rem 2rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-sm);
    max-width: 800px;
}

.article-content h2 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.article-content .article-meta {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.article-content p {
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-text {
    color: var(--color-text-light);
    font-size: 0.875rem;
    text-align: center;
    margin-bottom: 1rem;
}

.reset-button {
    display: block;
    margin: 0 auto;
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-light);
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.reset-button:hover {
    background-color: var(--color-bg-alt);
    border-color: var(--color-text-light);
}

.reset-button:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    border-top: 2px solid var(--color-border);
    box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    animation: slideUp 0.3s ease-out;
}

.cookie-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

.cookie-banner-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.cookie-banner-text {
    color: var(--color-text-light);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.cookie-banner-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.375rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-alt);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.2s ease-out;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background-color: var(--color-bg);
    border-radius: 0.5rem;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.modal-text {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.preferences-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.preference-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.2s;
}

.preference-item:hover {
    background-color: var(--color-bg-alt);
}

.preference-item input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

.preference-item span {
    font-size: 1rem;
    font-weight: 500;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.modal-disclaimer {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--color-text-light);
    text-align: center;
    font-style: italic;
}

.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--color-text);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.375rem;
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    animation: slideUp 0.3s ease-out;
    max-width: 90%;
    text-align: center;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
    }
    to {
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .brand {
        font-size: 1.125rem;
    }

    .nav {
        width: 100%;
        justify-content: flex-start;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-text {
        font-size: 1rem;
    }

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

    .article-content h2 {
        font-size: 1.75rem;
    }

    .article-content {
        padding: 2rem 1.5rem;
    }

    .modal-content {
        padding: 1.5rem;
    }

    .cookie-banner-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }

    .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }
}