/* ================================
   Global Variables (định nghĩa trong :root)
================================ */
:root {
  --primary-color: {{ color_theme['primary'] }};
  --secondary-color: {{ color_theme['secondary'] }};
  --background-color: {{ color_theme['background'] }};
  --text-color: {{ color_theme['text'] }};
  --accent-color: {{ color_theme['accent'] }};
  --header-text-color: {{ color_theme['header_text'] }};
  --link-color: {{ color_theme['link'] }};
  --link-hover-color: {{ color_theme['link_hover'] }};
  --button-bg-color: {{ color_theme['button_bg'] }};
  --button-text-color: {{ color_theme['button_text'] }};
  --border-color: {{ color_theme['border'] }};
  --muted-text-color: {{ color_theme['muted_text'] }};
}

/* ================================
   Global Styles
================================ */
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  margin-top: 65px;
  flex: 1;
  padding: 15px;
}

/* ================================
   Buttons
================================ */
.btn {
  background-color: var(--button-bg-color);
  color: var(--button-text-color);
  border: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.btn:hover {
  background-color: var(--accent-color);
  color: var(--background-color);
}

/* ================================
   Company Info (about.html & contact.html)
================================ */
.company-info {
  background: var(--background-color);
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
  max-width: 600px;
  margin: 0 auto;
  border: 1px solid var(--border-color);
}

.company-info h2 {
  color: var(--primary-color);
  font-weight: bold;
  margin-bottom: 20px;
}

.company-info p {
  font-size: 1.1rem;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.company-info a {
  color: var(--link-color);
  text-decoration: none;
}

.company-info a:hover {
  text-decoration: underline;
  color: var(--link-hover-color);
}

/* ================================
   Breadcrumb
================================ */
.breadcrumb {
  background-color: var(--background-color);
  border-radius: 0.25rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
}

.breadcrumb-item a {
  color: var(--link-color);
  text-decoration: none;
}

.breadcrumb-item a:hover {
  color: var(--link-hover-color);
  text-decoration: underline;
}

/* ================================
   Typography & Common Text
================================ */
h1 {
  color: var(--primary-color);
  font-weight: bold;
  margin-bottom: 1rem;
}

p {
  color: var(--text-color);
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.text-danger {
  color: var(--accent-color) !important;
  font-size: 1rem;
  font-weight: bold;
}

.text-muted {
  color: var(--muted-text-color);
}

/* ================================
   Utility Classes
================================ */
.hover-opacity:hover {
  opacity: 0.8;
  transition: opacity 0.2s ease-in-out;
}

.lh-base {
  line-height: 1.6 !important;
}

/* ================================
   Responsive Design (Common)
================================ */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 10px;
  }
}