:root {
  --primary-color: #404040;
  --secondary-color: #009bdb;
  --accent-color: #0080bc;
  --background-light: #f5f7fa;
  --card-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  --hover-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
  --text-dark: #333333;
  --text-light: #ffffff;
  --transition: all 0.3s ease-in-out;
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
  font-family: 'Inter', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--background-light);
  color: var(--text-dark);
}

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

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.2rem rgba(26, 35, 126, 0.25);
}

/* Custom UI Elements */
.premium-card {
  border: none;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  background: white;
}

.premium-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--hover-shadow);
}

.premium-btn {
  background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  border: none;
  color: white;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 16px;
  transition: var(--transition);
}

.premium-btn:hover {
  background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
  color: white;
  transform: scale(1.02);
}

.navbar-brand-custom {
  font-weight: 800;
  color: var(--primary-color) !important;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
}

.nav-link-custom {
  font-weight: 500;
  color: var(--text-dark) !important;
  transition: var(--transition);
  position: relative;
}

.nav-link-custom::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 50%;
  background-color: var(--secondary-color);
  transition: var(--transition);
  transform: translateX(-50%);
}

.nav-link-custom:hover {
  color: var(--secondary-color) !important;
}

.nav-link-custom:hover::after {
  width: 100%;
}

.pagination .page-item .page-link {
  color: var(--primary-color);
  border-radius: 50%;
  margin: 0 4px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.pagination .page-item.active .page-link {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  box-shadow: var(--card-shadow);
}

.pagination .page-item:not(.active):not(.disabled) .page-link:hover {
  background-color: var(--secondary-color);
  color: white;
  transform: translateY(-2px);
}