/* ===== GLOBAL ===== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Rubik', sans-serif;
  background-color: #fdfdfd;
  color: #1a1a1a;
  line-height: 1.7;
  font-size: 16px;
}

a {
  color: #0e6ba8;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #063970;
  text-decoration: underline;
}

/* ===== HEADER ===== */
.site-header {
  background-color: #ffffff;
  border-bottom: 2px solid #e0e0e0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: auto;
}

.logo {
  font-size: 1.6rem;
  font-weight: bold;
  color: #0e6ba8;
}

.main-nav a {
  margin-left: 1.2rem;
  font-weight: 500;
  position: relative;
  transition: all 0.3s ease-in-out;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: #0e6ba8;
  transition: width 0.3s ease-in-out;
}

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

.main-nav a.active {
  color: #063970;
  font-weight: bold;
}

/* ===== HERO ===== */
.hero {
  background: linear-gradient(to right, #d1f0f1, #f2faff);
  padding: 2.5rem;
  border-radius: 12px;
  text-align: center;
  margin-top: 2rem;
  box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
  color: #063970;
}

.hero p {
  font-size: 1.15rem;
  color: #333;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 1rem 2rem;
}

.layout {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

/* ===== ARTICLES ===== */
.articles {
  flex: 3;
}

.post-card {
  display: flex;
  flex-direction: column;
  margin-bottom: 2rem;
  border: 1px solid #dcdcdc;
  border-radius: 10px;
  overflow: hidden;
  background-color: #fff;
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.post-content {
  padding: 1.2rem;
}

.post-content h2 {
  font-size: 1.3rem;
  margin-bottom: 0.6rem;
  color: #0e6ba8;
}

.post-content p {
  font-size: 1rem;
  color: #444;
}

.meta {
  display: block;
  font-size: 0.85rem;
  color: #666;
  margin-top: 0.7rem;
}

/* ===== SIDEBAR ===== */
.sidebar {
  flex: 1;
  border-left: 2px solid #e8e8e8;
  padding-left: 1rem;
}

.sidebar h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: #063970;
}

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

.sidebar ul li {
  margin-bottom: 0.6rem;
}

.sidebar ul li a {
  color: #0e6ba8;
}

.sidebar ul li a:hover {
  color: #063970;
}

/* ===== INFO BOX ===== */
.info-box {
  background-color: #f3f9fb;
  border-left: 5px solid #0e6ba8;
  padding: 1.5rem;
  margin-top: 2rem;
  border-radius: 8px;
}

.info-box h2,
.info-box h3 {
  margin-bottom: 0.5rem;
  color: #063970;
}

.info-box ul {
  list-style: none;
  padding-left: 1rem;
  margin-top: 0.5rem;
}

.info-box ul li::before {
  content: '✔️';
  margin-right: 0.5rem;
  color: #009b77;
}

/* ===== FOOTER ===== */
.site-footer {
  background-color: #f4f4f4;
  padding: 2rem 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: #555;
  margin-top: 3rem;
  border-top: 2px solid #e0e0e0;
}

.site-footer a {
  color: #0e6ba8;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .layout {
    flex-direction: column;
  }

  .topbar {
    flex-direction: column;
    gap: 1rem;
  }

  .sidebar {
    border-left: none;
    padding-left: 0;
    margin-top: 2rem;
  }

  .main-nav a {
    margin: 0.5rem;
    display: inline-block;
  }
}