/* Reset cơ bản */
body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: #f8f9fa;
  color: #333;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

a {
  color: #0d6efd;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Header */
header {
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
header .logo img {
  max-height: 60px;
}
header .nav .nav-link {
  font-weight: 500;
  padding: 8px 12px;
}
header .nav .nav-link:hover {
  background: rgba(255,255,255,0.2);
  border-radius: 4px;
}

/* Slider / hero */
#hero img {
  border-radius: 6px;
  max-height: 400px;
  object-fit: cover;
}

/* Content */
.container {
  max-width: 1140px;
}
h1, h2, h3, h4 {
  font-weight: 600;
}
.post-content {
  margin-top: 20px;
}
.post-content p {
  margin-bottom: 1rem;
}

/* Card bài viết */
.card {
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  overflow: hidden;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.card img {
  max-height: 250px;
  object-fit: cover;
}
.card-title a {
  color: #333;
}
.card-title a:hover {
  color: #0d6efd;
}

/* Sidebar */
.sidebar .card {
  margin-bottom: 20px;
}
.sidebar .card-header {
  font-weight: bold;
}

/* Footer */
footer {
  font-size: 14px;
  line-height: 1.4;
}
footer p {
  margin: 2px 0;
}
/* Sidebar */
.inside-right-sidebar {
  font-size: 14px;
}

.inside-right-sidebar img,
.inside-right-sidebar video {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin-bottom: 12px;
}

.sidebar-posts article {
  margin-bottom: 15px;
}

.sidebar-posts img {
  width: 100%;
  max-height: 150px;
  object-fit: cover;
  border-radius: 4px;
}

.sidebar-posts h4 {
  font-size: 14px;
  margin: 8px 0 4px;
}

.sidebar-posts small {
  color: #777;
  font-size: 12px;
}

/* Video wrapper */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 ratio */
  height: 0;
  overflow: hidden;
}
.video-wrapper video {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}