/* Color Variables - Based on toantitan.vn */
:root {
  --primary-color: #0066CC;
  --primary-dark: #0052A3;
  --primary-light: #3385D6;
  --accent-color: #FF6B35;
  --accent-light: #FF8C5A;
  --text-dark: #333333;
  --text-light: #666666;
  --bg-light: #F8F9FA;
  --white: #FFFFFF;
  --border-color: #E0E0E0;
}

html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-dark);
  background-color: var(--white);
}

main {
  min-height: calc(100vh - 400px);
  padding: 20px 0;
}

/* Topbar styles - toantitan.vn color scheme */
.topbar {
  background-color: var(--primary-color);
  color: var(--white);
  padding: 10px 0;
  font-size: 14px;
}

.topbar a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s ease;
}

.topbar a:hover {
  color: var(--accent-color);
}

/* Navbar styles - toantitan.vn color scheme */
.navbar {
  background-color: var(--white) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-color) !important;
}

.navbar-brand:hover {
  color: var(--accent-color) !important;
}

/* Slider styles */
.carousel-item img {
  height: 400px;
  object-fit: cover;
}

.carousel-caption {
  background: rgba(0, 0, 0, 0.5);
  padding: 20px;
  border-radius: 5px;
}

/* Footer styles - toantitan.vn color scheme */
.footer {
  background-color: var(--primary-dark);
  color: var(--white);
  padding: 40px 0 20px;
  margin-top: 50px;
}

.footer h5 {
  color: var(--accent-color);
  margin-bottom: 20px;
  font-weight: 600;
}

.footer a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--accent-color);
}

/* Content styles */
.content-list .card {
  transition: transform 0.2s;
}

.content-list .card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Breadcrumb styles */
.breadcrumb {
  background-color: #f8f9fa;
  padding: 10px 15px;
  border-radius: 5px;
}

/* Form styles */
.form-label {
  font-weight: 500;
  margin-bottom: 5px;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.25);
}

/* Button styles - toantitan.vn color scheme */
.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

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

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--white);
}

.btn {
  border-radius: 5px;
  padding: 10px 20px;
  font-weight: 500;
  transition: all 0.3s ease;
}

/* Card styles */
.card {
  border: none;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  border-radius: 5px;
}

.card-header {
  background-color: #f8f9fa;
  border-bottom: 1px solid #dee2e6;
  font-weight: 600;
}

/* Utility classes */
.text-muted {
  color: #6c757d !important;
}

.mb-4 {
  margin-bottom: 1.5rem !important;
}

.mt-4 {
  margin-top: 1.5rem !important;
}

.my-4 {
  margin-top: 1.5rem !important;
  margin-bottom: 1.5rem !important;
}

.my-5 {
  margin-top: 3rem !important;
  margin-bottom: 3rem !important;
}