/* --- Variables & Global Styles --- */
:root {
    --font-main: 'JetBrains Mono', monospace;
    --color-background: #0a0a0a;
    --color-surface: #141414;
    --color-text: #e0e0e0;
    --color-text-muted: #888;
    --color-primary: #00ffff; /* Neon Cyan */
    --color-border: #333;
    --container-width: 1320px;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    text-shadow: 0 0 5px rgba(0, 255, 255, 0.2);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

a:hover {
    color: #fff;
    text-shadow: 0 0 8px var(--color-primary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: 25px 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.site-title {
    font-size: 2rem;
    font-weight: 700;
}
.site-title a {
    color: var(--color-text);
}
.site-title a:hover {
    color: var(--color-primary);
}


.main-nav ul {
    list-style: none;
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.main-nav a {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-text);
    padding: 8px 0;
}
.main-nav a.active, .main-nav a:hover {
    color: var(--color-primary);
    text-shadow: 0 0 5px var(--color-primary);
}

/* --- Main Content Layout --- */
main.container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 50px;
    padding-top: 50px;
    padding-bottom: 50px;
}

@media (min-width: 992px) {
    main.container {
        grid-template-columns: 2.5fr 1fr;
    }
}

/* --- Article Styles --- */
.category-tag {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-background);
    padding: 5px 15px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 1px;
}

.article-meta {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.featured-article-hero article {
    position: relative;
    border: 1px solid var(--color-border);
}

.featured-article-hero .article-content {
    padding: 30px;
}
.featured-article-hero h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 15px;
}
.featured-article-hero p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--color-text-muted);
}
@media (min-width: 768px) {
    .featured-article-hero .article-content {
        padding: 40px;
    }
}

.section-title {
    font-size: 2rem;
    padding-bottom: 15px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-primary);
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.grid-item {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: border-color 0.3s ease, transform 0.3s ease;
}
.grid-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
}
.grid-item img {
    margin-bottom: 0;
    filter: grayscale(100%);
    transition: filter 0.3s ease;
}
.grid-item:hover img {
    filter: grayscale(0%);
}
.grid-item .article-content {
    padding: 20px;
}
.grid-item h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}
.grid-item p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}
.grid-item .article-meta {
    margin-top: auto;
    padding-top: 10px;
}

/* --- Sidebar --- */
.sidebar {
    position: sticky;
    top: 50px;
    align-self: start;
}

.widget-box {
    padding: 25px;
    margin-bottom: 30px;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.sidebar h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--color-primary);
}

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

.sidebar ul {
    list-style: none;
}

.sidebar ul li a {
    display: block;
    padding: 8px 0;
    font-weight: 400;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}
.sidebar ul li:last-child a {
    border-bottom: none;
}
.sidebar ul li a:hover {
    color: var(--color-primary);
}

/* --- Article Page --- */
.article-page main.container {
    display: block;
    max-width: 840px;
}

.article-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
}

.article-header h1 {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    line-height: 1.1;
    color: var(--color-primary);
}

.article-header .article-meta {
    margin-top: 20px;
    font-size: 1rem;
    color: var(--color-text-muted);
}
.article-header .category-tag {
    margin-top: 20px;
}

.article-body {
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-body .featured-image {
    margin: 0 auto 40px;
    border: 1px solid var(--color-border);
}

.article-body p {
    margin-bottom: 1.75em;
}

.article-body h2 {
    font-size: 2rem;
    margin-top: 2em;
    margin-bottom: 1em;
    color: var(--color-primary);
}

.article-body h3 {
    font-size: 1.5rem;
    margin-top: 1.5em;
    margin-bottom: 1em;
    color: var(--color-primary);
}

/* --- Footer --- */
.site-footer {
    background-color: var(--color-surface);
    color: var(--color-text-muted);
    text-align: center;
    padding: 40px 0;
    margin-top: 50px;
    border-top: 1px solid var(--color-border);
    font-size: 0.9rem;
}
.site-footer p {
    color: #888;
}