/* --- Global Styles & AI/Modern Theme --- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&display=swap');

:root {
    --primary-bg: #0a0f1f; /* Deep space blue */
    --secondary-bg: #141a31; /* Slightly lighter blue */
    --accent-color: #00ffff; /* Cyan/Aqua */
    --text-primary: #e0e0e0; /* Light grey for text */
    --text-secondary: #a0a0c0; /* Muted lavender */
    --border-color: #2a304f;
    --font-family: 'Montserrat', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.7;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    text-decoration: underline;
}

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--secondary-bg);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.site-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.site-title a {
    text-decoration: none;
    color: var(--text-primary);
}

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

.main-nav a {
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
}

.main-nav a.active, .main-nav a:hover {
    color: #fff;
    text-decoration: none;
}


/* --- Main Content & Layout --- */
.main-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem 0;
}

main {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* --- Blog Post Listing --- */
.blog-posts {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.post-card {
    background-color: var(--primary-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 255, 255, 0.1);
}

.post-card h3 {
    margin-top: 0;
}

.post-card a.read-more {
    display: inline-block;
    margin-top: 1rem;
    font-weight: 600;
    background: linear-gradient(90deg, var(--accent-color), #3f51b5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    border-bottom: 2px solid transparent;
}

.post-card a.read-more:hover {
    border-bottom-color: var(--accent-color);
    text-decoration: none;
}

/* --- Sidebar --- */
aside {
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.widget {
    margin-bottom: 2rem;
}

.widget-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-color);
    display: inline-block;
}

.widget ul {
    list-style: none;
}

.widget ul li {
    margin-bottom: 0.75rem;
}

.widget ul li a {
    color: var(--text-secondary);
}

.widget ul li a:hover {
    color: var(--accent-color);
}

.promo-text {
    background-color: var(--primary-bg);
    padding: 1rem;
    border-radius: 4px;
    border-left: 3px solid var(--accent-color);
    font-style: italic;
}

/* --- Article Page Specifics --- */
.article-header {
    margin-bottom: 2rem;
    text-align: center;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.article-content {
    font-size: 1.1rem;
}

.article-content h2 {
    margin-top: 2.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
    margin-top: 2rem;
}

.article-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-left: 3px solid var(--accent-color);
    background-color: var(--primary-bg);
    font-style: italic;
    color: var(--text-secondary);
}

/* --- Call to Action --- */
.cta-section {
    background: linear-gradient(135deg, #1e295a, #0a0f1f);
    padding: 2rem;
    margin: 3rem 0;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.cta-section h3 {
    color: #fff;
}

.cta-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    font-weight: 700;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.cta-button:hover {
    background-color: #fff;
    text-decoration: none;
}


/* --- Footer --- */
.site-footer {
    background-color: var(--secondary-bg);
    color: var(--text-secondary);
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* --- Responsive Design --- */
@media (min-width: 768px) {
    .blog-posts {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .main-layout {
        grid-template-columns: 3fr 1fr;
    }
    .blog-posts {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-page-layout {
        grid-template-columns: 3fr 1fr;
    }
}