/* --- AI / Modern Theme --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&display=swap');

:root {
    --bg-color: #0a0a1a;
    --primary-text-color: #e0e0ff;
    --secondary-text-color: #a0a0c0;
    --card-bg-color: #1a1a2e;
    --border-color: #2a2a4e;
    --accent-color-1: #00f2ff; /* Cyan */
    --accent-color-2: #ff00ff; /* Magenta */
    --font-family: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

a {
    color: var(--accent-color-1);
    text-decoration: none;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

a:hover {
    color: #fff;
    text-shadow: 0 0 5px var(--accent-color-1);
}

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

h1, h2, h3, h4 {
    color: #fff;
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 {
    font-size: 2.5rem;
    font-weight: 900;
    text-shadow: 0 0 10px var(--accent-color-1);
}

h2 {
    font-size: 2rem;
    border-left: 4px solid var(--accent-color-2);
    padding-left: 1rem;
}

h3 {
    font-size: 1.5rem;
    color: var(--accent-color-1);
}

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

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--card-bg-color);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 900;
    color: #fff;
}

.logo a {
    color: inherit;
    text-decoration: none;
}

.main-nav ul {
    list-style-type: none;
    display: flex;
    gap: 1.5rem;
}

.main-nav a {
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* --- Main Layout --- */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .main-grid {
        grid-template-columns: 3fr 1fr;
    }
}

/* --- Content Area --- */
.content-section {
    background-color: transparent;
}

.intro-section {
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: linear-gradient(145deg, var(--card-bg-color), var(--bg-color));
}

.article-list {
    display: grid;
    gap: 2rem;
}

.article-card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 242, 255, 0.1);
}

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

.article-card-content h3 {
    margin-top: 0;
}

.read-more-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(45deg, var(--accent-color-1), var(--accent-color-2));
    color: #000;
    font-weight: 700;
    border-radius: 5px;
    transition: transform 0.2s ease;
}

.read-more-btn:hover {
    transform: scale(1.05);
    color: #000;
    text-shadow: none;
}


/* --- Sidebar --- */
.sidebar {
    padding: 1.5rem;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.sidebar-widget {
    margin-bottom: 2rem;
}

.sidebar-widget:last-child {
    margin-bottom: 0;
}

.sidebar-widget h3 {
    margin-bottom: 1rem;
    color: #fff;
    border-bottom: 2px solid var(--accent-color-1);
    padding-bottom: 0.5rem;
}

.sidebar-widget ul {
    list-style-type: none;
}

.sidebar-widget ul li {
    margin-bottom: 0.5rem;
}

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

.sidebar-widget ul li a:hover {
    color: var(--accent-color-1);
}

.promo-text {
    font-style: italic;
    background-color: #0a0a1a;
    padding: 1rem;
    border-radius: 5px;
    border-left: 3px solid var(--accent-color-2);
}

/* --- Article Page Specific --- */
.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.article-meta {
    display: flex;
    gap: 1rem;
    color: var(--secondary-text-color);
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.article-content h2 {
    margin-top: 2.5rem;
}

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

.article-content ul {
    list-style-position: inside;
    padding-left: 1rem;
    margin-bottom: 1rem;
    color: var(--secondary-text-color);
}

.cta-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--card-bg-color);
    border: 1px solid var(--accent-color-1);
    border-radius: 8px;
    text-align: center;
}
.cta-box p {
    color: var(--primary-text-color);
    margin-bottom: 1rem;
}

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

.site-footer p {
    margin: 0;
    color: var(--secondary-text-color);
}

/* --- Other Pages (About, Contact, etc.) --- */
.page-content {
    background-color: var(--card-bg-color);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}