/* ========== Reset & Base ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --border: #e5e7eb;
  --accent: #f59e0b;
  --max-width: 1200px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

a { color: var(--primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary-dark); }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ========== Header ========== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.logo {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.5px;
}

.logo span { color: var(--primary); }

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 24px;
}

.main-nav a {
  color: var(--text);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover { color: var(--primary); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text);
}

/* ========== Hero ========== */
.hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
  color: #fff;
  padding: 60px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 2.4rem;
  margin-bottom: 14px;
  font-weight: 700;
}

.hero p {
  font-size: 1.1rem;
  max-width: 640px;
  margin: 0 auto;
  opacity: 0.92;
}

/* ========== Section Titles ========== */
.section-title {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 48px 0 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}

/* ========== Article Grid ========== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
  margin-bottom: 48px;
}

.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}

.article-card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-alt);
}

.article-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-category {
  display: inline-block;
  background: #eff6ff;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
  align-self: flex-start;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.article-card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card h3 a {
  color: var(--text);
}

.article-card h3 a:hover { color: var(--primary); }

.article-excerpt {
  color: var(--text-light);
  font-size: 0.92rem;
  margin-bottom: 14px;
  flex: 1;
}

.article-meta {
  font-size: 0.82rem;
  color: var(--text-light);
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ========== Article Detail ========== */
.article-detail {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.article-detail h1 {
  font-size: 2rem;
  line-height: 1.3;
  margin-bottom: 18px;
}

.article-detail-meta {
  display: flex;
  gap: 16px;
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.article-featured-img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 32px;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content h2 {
  font-size: 1.5rem;
  margin: 36px 0 16px;
  color: var(--text);
}

.article-content h3 {
  font-size: 1.2rem;
  margin: 28px 0 12px;
}

.article-content ul, .article-content ol {
  margin: 0 0 20px 24px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--bg-alt);
  padding: 16px 20px;
  margin: 24px 0;
  font-style: italic;
  color: var(--text-light);
  border-radius: 0 6px 6px 0;
}

.article-content img {
  border-radius: 8px;
  margin: 20px 0;
}

/* ========== Sidebar / Categories ========== */
.sidebar-widget {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 24px;
  margin-bottom: 24px;
}

.sidebar-widget h3 {
  font-size: 1.1rem;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.category-list {
  list-style: none;
}

.category-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.category-list li:last-child { border-bottom: none; }

.category-list a {
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.category-list a:hover { color: var(--primary); }

.category-count {
  background: var(--primary);
  color: #fff;
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 10px;
}

/* ========== Layout with Sidebar ========== */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px;
}

/* ========== Page Content (About, Contact, Legal) ========== */
.page-content {
  max-width: 820px;
  margin: 0 auto;
  padding: 48px 20px;
}

.page-content h1 {
  font-size: 2rem;
  margin-bottom: 24px;
  color: var(--text);
}

.page-content h2 {
  font-size: 1.4rem;
  margin: 32px 0 14px;
  color: var(--text);
}

.page-content p {
  margin-bottom: 18px;
  color: #374151;
}

.page-content ul, .page-content ol {
  margin: 0 0 18px 24px;
}

.page-content li { margin-bottom: 8px; }

/* ========== Contact Form ========== */
.contact-form {
  background: var(--bg-alt);
  padding: 30px;
  border-radius: 10px;
  margin-top: 24px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 0.92rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.btn {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover { background: var(--primary-dark); }

/* ========== Footer ========== */
.site-footer {
  background: #111827;
  color: #9ca3af;
  padding: 48px 20px 24px;
  margin-top: 60px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-col p, .footer-col a {
  font-size: 0.88rem;
  color: #9ca3af;
  line-height: 1.8;
}

.footer-col a:hover { color: #fff; }

.footer-col ul { list-style: none; }

.footer-bottom {
  max-width: var(--max-width);
  margin: 36px auto 0;
  padding-top: 20px;
  border-top: 1px solid #374151;
  text-align: center;
  font-size: 0.85rem;
  color: #6b7280;
}

/* ========== Pagination ========== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 40px 0;
}

.pagination a, .pagination span {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
}

.pagination a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.pagination .current {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* ========== Breadcrumbs ========== */
.breadcrumbs {
  padding: 16px 0;
  font-size: 0.88rem;
  color: var(--text-light);
}

.breadcrumbs a { color: var(--text-light); }
.breadcrumbs a:hover { color: var(--primary); }

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .nav-toggle { display: block; }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: none;
  }

  .main-nav.open { display: block; }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 10px 0;
  }

  .main-nav li {
    padding: 10px 20px;
    border-bottom: 1px solid var(--border);
  }

  .main-nav li:last-child { border-bottom: none; }

  .hero h1 { font-size: 1.8rem; }

  .layout-with-sidebar {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}