:root {
  --bg-color: #ffffff;
  --text-color: #3e4042;
  --navbar-bg: #ffffff;
  --card-bg: #f9f9f9;
  --link-hover-bg: rgba(52, 152, 219, 0.1);
  --border-color: #e9ecef;
  --primary-color: #3498db;
  --secondary-color: #2ecc71;
  --accent-color: #e74c3c;
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --hero-overlay: rgba(0, 0, 0, 0.6);
  --footer-bg: #f8f9fa;
}

body.dark-mode {
  --bg-color: #1a1a1a;
  --text-color: #e0e0e0;
  --navbar-bg: #222222;
  --card-bg: #2c2c2c;
  --link-hover-bg: rgba(52, 152, 219, 0.2);
  --border-color: #444444;
  --primary-color: #4dabf7;
  --secondary-color: #40c980;
  --accent-color: #e74c3c;
  --card-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  --hero-overlay: rgba(0, 0, 0, 0.8);
  --footer-bg: #222222;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Layout Styles */
.main-container {
  display: flex;
  min-height: calc(100vh - 56px); /* Adjust based on navbar height */
}

.content {
  flex: 1;
  padding: 2rem;
  background-color: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
  margin-left: 0px;
  width: calc(100% - 220px);
}

.content-expanded {
  width: 100%;
  margin-left: 0;
}

/* Header Styles */
.custom-navbar {
  border-bottom: 1px solid var(--border-color);
  padding: 0.7rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  background-color: var(--navbar-bg) !important;
  position: relative;
  z-index: 102;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color) !important;
  font-size: 1.5rem;
  text-decoration: none;
  transition: color 0.3s ease;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-link {
  color: var(--text-color) !important;
  font-weight: 500;
  margin: 0 0.5rem;
  padding: 0.5rem 0.8rem !important;
  border-radius: 6px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.nav-link:hover {
  background-color: var(--link-hover-bg);
  color: var(--primary-color) !important;
  transform: translateY(-2px);
}

.btn-link.nav-link {
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  color: var(--text-color) !important;
  font-weight: 500;
}

.btn-link.nav-link:hover {
  color: var(--primary-color) !important;
}

/* Hero Sections */
.hero-section, .about-hero {
  background-size: cover !important;
  background-position: center !important;
  color: white;
  padding: 120px 0;
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}

.hero-section::before, .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--hero-overlay);
  z-index: -1;
}

/* Cards and UI Elements */
.feature-card, .service-card, .value-card, .mission-card, .testimonial-card, .stat-card {
  border-radius: 12px;
  box-shadow: var(--card-shadow);
  background-color: var(--card-bg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  padding: 25px;
  margin-bottom: 25px;
  border: 1px solid var(--border-color);
}

.feature-card:hover, .service-card:hover, .value-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.feature-icon, .service-icon, .value-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 20px;
  transition: color 0.3s ease;
}

/* Button Styles */
.btn {
  border-radius: 6px;
  padding: 8px 16px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary {
  background-color: var(--primary-color) !important;
  border-color: var(--primary-color) !important;
}

.btn-success {
  background-color: var(--secondary-color) !important;
  border-color: var(--secondary-color) !important;
}

.btn-primary:hover, .btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

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

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

/* Footer Styles */
.footer {
  background-color: var(--footer-bg) !important;
  color: var(--text-color);
  border-top: 1px solid var(--border-color);
  transition: background-color 0.3s ease;
}

.footer a {
  color: var(--primary-color);
  transition: color 0.3s ease;
}

.footer a:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

/* Dark Mode Toggle */
#darkModeToggle {
  font-size: 1.4rem;
  padding: 5px 10px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-color);
  transition: all 0.3s ease;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#darkModeToggle:hover {
  background-color: var(--link-hover-bg);
  transform: rotate(30deg);
}

/* Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.container {
  animation: fadeIn 1s ease-in-out;
}

/* Profile Images */
#navbarAvatar, #avatarHeader {
  object-fit: cover;
  border: 2px solid var(--border-color);
  transition: all 0.2s ease;
}

#navbarAvatar:hover {
  transform: scale(1.1);
  border-color: var(--primary-color);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-color);
  margin-bottom: 1rem;
  font-weight: 600;
  transition: color 0.3s ease;
}

p {
  color: var(--text-color);
  line-height: 1.7;
  margin-bottom: 1rem;
  transition: color 0.3s ease;
}

/* Jumbotron and Container Elements */
.jumbotron {
  background-color: var(--card-bg);
  box-shadow: var(--card-shadow);
  border-radius: 12px;
  margin-bottom: 2rem;
  padding: 2rem;
  transition: background-color 0.3s ease;
}

/* Lists and other UI elements */
.list-group-item {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-color: var(--border-color);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Table Elements */
table.table {
  color: var(--text-color);
}

table.table thead th {
  border-color: var(--border-color);
}

table.table-hover tbody tr:hover {
  background-color: var(--link-hover-bg);
}

/* Responsive Adjustments */
@media (max-width: 992px) {
  .content {
    padding: 1.5rem;
    width: calc(100% - 180px);
  }
  
  .hero-section, .about-hero {
    padding: 80px 0;
  }
}

@media (max-width: 768px) {
  .main-container {
    flex-direction: column;
  }
  
  .content {
    padding: 1rem;
    margin-left: 0;
    width: 100%;
  }
  
  .hero-section, .about-hero {
    padding: 60px 0;
  }
  
  .feature-card, .service-card, .value-card {
    padding: 20px;
  }
}

/* Special Elements for Dark Mode */
body.dark-mode .dropdown-menu {
  background-color: var(--card-bg);
  border-color: var(--border-color);
}

body.dark-mode .dropdown-item {
  color: var(--text-color);
}

body.dark-mode .dropdown-item:hover {
  background-color: var(--link-hover-bg);
  color: var(--primary-color);
}

body.dark-mode .dropdown-divider {
  border-color: var(--border-color);
}

body.dark-mode .card {
  background-color: var(--card-bg);
  border-color: var(--border-color);
}

body.dark-mode .bg-light {
  background-color: var(--card-bg) !important;
}