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

:root {
  --bg-color: #0d1117;
  --container-bg-color: #161b22;
  --primary-accent-color: #58a6ff;
  --secondary-accent-color: #3081f7;
  --text-color: #c9d1d9;
  --text-secondary-color: #8b949e;
  --border-color: #30363d;
  --font-family: 'Poppins', sans-serif;
}

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

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

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

h1, h2, h3, h4, h5, h6 {
  color: var(--primary-accent-color);
  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;
}

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

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

/* --- Header & Navigation --- */
.site-header {
  background-color: var(--container-bg-color);
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

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

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

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

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

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

/* --- Blog Post Listings (Homepage) --- */
.blog-posts-section h2 {
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-top: 2rem;
}

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

.post-card:hover {
    border-color: var(--primary-accent-color);
    transform: translateY(-5px);
}

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

.read-more-btn {
  display: inline-block;
  margin-top: 1rem;
  background-color: var(--primary-accent-color);
  color: #fff;
  padding: 0.5rem 1.2rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.read-more-btn:hover {
  background-color: var(--secondary-accent-color);
  color: #fff;
  text-decoration: none;
}

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

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

.sidebar-widget h3 {
  font-size: 1.25rem;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

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

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

.sidebar-widget ul li a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-widget ul li a::before {
    content: '›';
    color: var(--primary-accent-color);
    font-size: 1.5rem;
    font-weight: bold;
}

.promo-text {
  background-color: var(--bg-color);
  padding: 1rem;
  border-radius: 5px;
  border: 1px dashed var(--border-color);
  text-align: center;
}

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

.article-header h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
}

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

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

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

.cta-section p {
    margin: 0;
}

/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: 2rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary-color);
  font-size: 0.9rem;
}

/* --- Mobile Menu (Hamburger) --- */
.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .main-nav {
        display: none;
        width: 100%;
        position: absolute;
        top: 65px;
        left: 0;
        background-color: var(--container-bg-color);
    }
    
    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
        gap: 0;
    }

    .main-nav ul li {
        width: 100%;
        text-align: center;
    }

    .main-nav ul li a {
        display: block;
        padding: 1rem;
        width: 100%;
    }

    .menu-toggle {
        display: block;
    }
}