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

:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --border-color: #ddd;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Dark Mode Variables */
body.dark-mode {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --text-color: #e0e0e0;
    --light-bg: #1e1e1e;
    --white: #121212;
    --border-color: #333;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
}

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

/* Navigation */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: var(--transition);
}

.nav-menu a:hover {
    color: var(--accent-color);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
    margin-left: 1rem;
}

.dark-mode-toggle:hover {
    border-color: var(--accent-color);
    transform: rotate(20deg);
}

.dark-mode-toggle:active {
    transform: scale(0.95);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    opacity: 0.9;
}

/* Section Styles */
section {
    padding: 80px 20px;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

/* About Section */
.about-section {
    background-color: var(--light-bg);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    gap: 3rem;
    align-items: center;
}

.about-image {
    flex-shrink: 0;
}

.about-image img {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    border: 5px solid var(--white);
}

.about-text-container {
    flex: 1;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    text-align: left;
}

.about-links {
    margin-top: 2rem;
}

.btn-link {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--accent-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-link:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Work Section */
.work-section {
    background-color: var(--white);
}

.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    justify-content: center;
}

.search-box {
    flex: 1;
    min-width: 250px;
    max-width: 400px;
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: 'Source Sans Pro', sans-serif;
    transition: var(--transition);
}

.search-box:focus {
    outline: none;
    border-color: var(--accent-color);
}

.filter-select {
    padding: 12px 20px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: 'Source Sans Pro', sans-serif;
    background-color: var(--white);
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Year Headers */
.year-header {
    grid-column: 1 / -1;
    margin: 2rem 0 1.5rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 3px solid var(--accent-color);
}

.year-header h3 {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.5px;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.article-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--accent-color);
}

.article-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--light-bg);
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    gap: 1rem;
}

.article-date {
    font-size: 0.85rem;
    color: #666;
    font-weight: 500;
}

.article-source {
    font-size: 0.75rem;
    color: var(--accent-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-title {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    line-height: 1.4;
    font-weight: 700;
}

.article-description {
    font-size: 0.95rem;
    color: var(--text-color);
    line-height: 1.7;
    margin-bottom: 1rem;
    flex: 1;
}

.article-category {
    display: inline-block;
    font-size: 0.8rem;
    color: var(--primary-color);
    background-color: var(--light-bg);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 1rem;
    font-weight: 600;
}

.article-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    margin-top: auto;
}

.article-link:hover {
    text-decoration: underline;
}

.no-results {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: #666;
}

/* Show More Button */
.show-more-container {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
    margin-bottom: 2rem;
}

.show-more-btn {
    padding: 14px 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Source Sans Pro', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.show-more-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.show-more-btn:active {
    transform: translateY(0);
}

/* Contact Section */
.contact-section {
    background-color: var(--light-bg);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-link {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: var(--transition);
}

.contact-link:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 2rem 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-image img {
        width: 250px;
        height: 250px;
    }

    .about-text {
        text-align: center;
    }

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

    .controls {
        flex-direction: column;
    }

    .search-box {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero {
        padding: 60px 20px;
    }

    section {
        padding: 50px 20px;
    }
}