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

/* --- CSS Variables (Minimalist Clean Theme) --- */
:root {
  --bg-color: #ffffff;
  --text-color: #333333;
  --heading-color: #111111;
  --accent-color: #007bff;
  --card-bg: #f8f9fa;
  --border-color: #dee2e6;
  --font-body: 'Inter', sans-serif;
}

/* --- Global & Reset Styles --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-body);
  color: var(--heading-color);
  margin-bottom: 1rem;
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: 2.8rem; letter-spacing: -1px; }
h2 { font-size: 2rem; letter-spacing: -0.5px; }
h3 { font-size: 1.4rem; font-weight: 600; }
p { margin-bottom: 1.5rem; }

a {
  color: var(--accent-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

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

/* --- Layout --- */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 0;
}

.main-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

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

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

.header-container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

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

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

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

.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.5px;
  color: var(--text-color);
}

.main-nav a:hover, .main-nav a.active {
  color: var(--accent-color);
  text-decoration: none;
}

/* --- Main Content & Articles --- */
.article-list {
  display: grid;
  gap: 2rem;
}

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

.article-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.article-card h2 {
    margin-top: 0;
    font-size: 1.6rem;
}

.btn {
  display: inline-block;
  background-color: var(--accent-color);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 5px;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 1px;
  transition: background-color 0.3s ease;
  border: 1px solid var(--accent-color);
}

.btn:hover {
  background-color: #0056b3;
  color: #fff;
  text-decoration: none;
}

/* --- Article Page Specific --- */
.article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-meta {
  font-size: 0.85rem;
  color: #6c757d;
  margin-top: -0.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.article-content h2, .article-content h3 {
    margin-top: 2.5rem;
}

.article-content ul {
    list-style-position: inside;
    margin-bottom: 1.5rem;
    padding-left: 0.5rem;
}

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

.cta-box {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    margin-top: 2.5rem;
}

/* --- Sidebar --- */
.sidebar-widget {
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border-color);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.sidebar-widget h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 1.2rem;
}

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

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

.sidebar-widget ul li a {
    font-weight: 400;
    color: var(--text-color);
}
.sidebar-widget ul li a:hover {
    color: var(--accent-color);
}


/* --- Footer --- */
.site-footer {
  text-align: center;
  padding: 2.5rem 0;
  margin-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9rem;
  color: #6c757d;
}

/* --- Media Queries --- */
@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.7rem; }
  
  .header-container {
    flex-direction: column;
    gap: 1rem;
  }
}