/* --- Google Font Import --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

/* --- CSS Variables --- */
:root {
    --primary-bg-color: #121212;
    --secondary-bg-color: #1e1e1e;
    --card-bg-color: #2a2a2a;
    --border-color: #444;
    --primary-text-color: #e0e0e0;
    --secondary-text-color: #a0a0a0;
    --accent-color: #03dac6;
    --accent-color-hover: #018786;
    --font-family: 'Poppins', sans-serif;
    --container-width: 1200px;
    --header-height: 70px;
}

/* --- General Resets & Body --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    color: #ffffff;
    margin-bottom: 0.8rem;
    line-height: 1.3;
    font-weight: 600;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.6rem; }

p {
    margin-bottom: 1.2rem;
    color: var(--primary-text-color);
}

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

a:hover {
    color: var(--accent-color-hover);
    text-decoration: underline;
}

ul {
    list-style-position: inside;
    padding-left: 1rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

/* --- Layout & Container --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 992px) {
    .container {
        grid-template-columns: 3fr 1fr;
    }
}

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

aside {
    padding: 1.5rem;
    background-color: var(--secondary-bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    height: fit-content;
}

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--secondary-bg-color);
    padding: 0 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header h1 {
    font-size: 1.5rem;
    margin: 0;
    font-weight: 700;
}

.site-header h1 a {
    color: #ffffff;
    text-decoration: none;
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.main-nav li {
    margin-left: 2rem;
}

.main-nav a {
    color: var(--primary-text-color);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    position: relative;
    padding-bottom: 5px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

/* --- Homepage Specifics --- */
.intro-section {
    text-align: center;
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.intro-section h2 {
    font-size: 2.5rem;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

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

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

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

.card-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.card-content p {
    color: var(--secondary-text-color);
    flex-grow: 1;
}

.read-more-link {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.6rem 1.2rem;
    background-color: var(--accent-color);
    color: var(--primary-bg-color);
    border-radius: 5px;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.3s ease;
    align-self: flex-start;
}

.read-more-link:hover {
    background-color: var(--accent-color-hover);
    color: #ffffff;
}

/* --- Sidebar Widgets --- */
.widget {
    margin-bottom: 2rem;
}

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

.widget-title {
    font-size: 1.3rem;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.widget ul {
    list-style: none;
    padding: 0;
}

.widget li {
    margin-bottom: 0.7rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.7rem;
}

.widget li:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.widget a {
    color: var(--primary-text-color);
    font-weight: 300;
}

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

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

.footer-links {
    margin-top: 1rem;
}

.footer-links a {
    color: var(--secondary-text-color);
    margin: 0 1rem;
}

.footer-links a:hover {
    color: var(--accent-color);
}

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

.article-header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.article-meta {
    font-size: 0.9rem;
    color: var(--secondary-text-color);
}

.article-content h2, .article-content h3 {
    margin-top: 2rem;
}

.article-content blockquote {
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--secondary-text-color);
}

.cta-section {
    background-color: var(--card-bg-color);
    border: 1px solid var(--accent-color);
    border-radius: 8px;
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
}

.cta-section h3 {
    color: var(--accent-color);
}

.cta-button {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 2rem;
    background-color: var(--accent-color);
    color: var(--primary-bg-color);
    border-radius: 5px;
    font-weight: 700;
    text-decoration: none;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.cta-button:hover {
    background-color: var(--accent-color-hover);
    color: #ffffff;
    transform: scale(1.05);
}

/* --- Contact Page --- */
.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    color: var(--primary-text-color);
    font-family: var(--font-family);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.contact-form button {
    padding: 0.8rem 2rem;
    background-color: var(--accent-color);
    color: var(--primary-bg-color);
    border: none;
    border-radius: 5px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-form button:hover {
    background-color: var(--accent-color-hover);
    color: #ffffff;
}


/* --- Responsive Design --- */
@media (max-width: 991px) {
    .site-header {
        flex-direction: column;
        height: auto;
        padding: 1rem;
    }

    .site-header h1 {
        margin-bottom: 1rem;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }

    .main-nav li {
        margin: 0.5rem;
    }

    h1 { font-size: 2.2rem; }
    .article-header h1 { font-size: 2.5rem; }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    main, aside {
        padding: 1.5rem;
    }
}