/* Clean, minimalist styling inspired by sanitizedinput.com */

:root {
    --primary-color: #000000;
    --secondary-color: #666666;
    --background-color: #e8e8e8;
    --light-gray: #f5f5f5;
    --border-color: #e0e0e0;
    --text-color: #333333;
    --accent-color: #ff5722;
    --header-bg: #2b2b2b;
    --card-bg: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Navigation */
.navbar {
    background-color: var(--header-bg) !important;
    border-bottom: none;
    padding: 1.5rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar-brand {
    display: inline-block;
    text-decoration: none;
}

.navbar-logo {
    height: 60px;
    width: auto;
    display: block;
}

/* Removed old nav-link styles - no longer needed */

/* Main content area */
.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 3rem 2rem;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.content-header {
    text-align: center;
    margin-bottom: 3rem;
}

.content-logo {
    height: 120px;
    width: auto;
    margin: 0 auto 2rem;
    display: block;
}

.page-title {
    color: var(--accent-color);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 0;
    text-align: center;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--accent-color);
    display: inline-block;
    width: auto;
}

/* Article grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

/* Article preview cards */
.article-preview {
    background: var(--card-bg);
    border: none;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.article-preview:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
    text-decoration: none;
    color: inherit;
}

.article-image {
    width: 100%;
    height: 200px;
    background-color: var(--light-gray);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-bottom: 1px solid var(--border-color);
}

.article-image.placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

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

.article-preview-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.article-preview-description {
    color: var(--secondary-color);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.article-date {
    font-weight: 400;
}

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

.tag-badge {
    background-color: var(--light-gray);
    color: var(--secondary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.tag-badge:hover {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    text-decoration: none;
}

/* Full article view */
.article-full {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.article-full-header {
    margin-bottom: 2rem;
    text-align: center;
}

.article-full-title {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article-full-meta {
    color: var(--secondary-color);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.article-full-content {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
}

.article-full-content h1,
.article-full-content h2,
.article-full-content h3 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.article-full-content p {
    margin-bottom: 1.5rem;
}

.article-full-content code {
    background-color: var(--light-gray);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
}

.article-full-content pre {
    background-color: var(--light-gray);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5rem 0;
}

.article-full-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1.5rem auto;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.article-full-content a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-bottom-color 0.2s ease;
}

.article-full-content a:hover {
    border-bottom-color: var(--accent-color);
}

.article-full-content a:visited {
    color: #d84315;
}

/* Sidebar */
.sidebar {
    background-color: var(--light-gray);
    border-radius: 8px;
    padding: 1.5rem;
    height: fit-content;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.tag-filter-btn {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.tag-filter-btn:hover,
.tag-filter-btn.active {
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
}

/* Tag Filter Dropdown */
.filter-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.filter-label {
    font-size: 0.95rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.tag-dropdown {
    min-width: 200px;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-color);
    color: var(--primary-color);
    font-size: 0.95rem;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.tag-dropdown:hover {
    border-color: var(--primary-color);
}

.tag-dropdown:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

/* Navigation buttons */
.nav-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.btn-nav {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-nav:hover {
    background-color: var(--secondary-color);
    color: white;
    text-decoration: none;
}

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

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

/* Responsive design */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }

    .page-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .article-preview-content {
        padding: 1rem;
    }

    .article-full-title {
        font-size: 2rem;
    }

    .nav-buttons {
        flex-direction: column;
        align-items: center;
    }

    .filter-container {
        flex-direction: column;
        gap: 0.5rem;
    }

    .tag-dropdown {
        width: 100%;
        max-width: 100%;
    }
}

/* Loading and animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 2.5rem 0;
    border-top: none;
    background-color: var(--header-bg);
    width: 100%;
}

.footer .main-content {
    background-color: transparent;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
    margin: 0 auto;
}

.footer-content {
    text-align: center;
    font-size: 1rem;
}

.footer-link {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
    font-weight: 500;
}

.footer-link:hover {
    color: #ff7849;
    text-decoration: none;
}

.footer-separator {
    margin: 0 1rem;
    color: var(--accent-color);
}