/* Clean System Styles */
:root {
  --primary-color: #2c3e50;
  --secondary-color: #6c757d;
  --accent-color: #3498db;
  --success-color: #27ae60;
  --danger-color: #e74c3c;
  --warning-color: #f39c12;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #2c3e50;
  --white: #ffffff;
  --gray-100: #f8f9fa;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-400: #ced4da;
  --gray-500: #adb5bd;
  --gray-600: #6c757d;
  --gray-700: #495057;
  --gray-800: #343a40;
  --gray-900: #212529;
}

/* Global Text Color Override - Make all text black except h1 */
body, p, span, div, a, li, td, th, label, small, button, input, textarea, select, h2, h3, h4, h5, h6 {
  color: #000000 !important;
}

/* Preserve h1 original colors */
h1 {
  color: inherit !important;
}

/* Preserve white text on colored buttons */
.btn-primary, .btn-secondary, .btn-success, .btn-danger, .btn-warning, .btn-info, .btn-dark, .badge {
  color: white !important;
}

/* Keep navbar links visible */
.navbar-light .navbar-nav .nav-link {
  color: #000000 !important;
}

.navbar-dark .navbar-nav .nav-link {
  color: white !important;
}

/* Global Styles */
* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #000000;
  background-color: var(--white);
  margin: 0;
  padding: 0;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: #000000;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

/* h1 keeps its original styling from individual pages */
h2, h3, h4, h5, h6 {
  color: #000000 !important;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray-700);
}

/* Card Styles */
.card {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}

.card-header {
  background-color: var(--gray-100);
  border-bottom: 1px solid var(--gray-200);
  border-radius: 12px 12px 0 0;
  padding: 1rem 1.5rem;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  background-color: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  border-radius: 0 0 12px 12px;
  padding: 1rem 1.5rem;
}

/* Button Styles */
.btn {
  border-radius: 8px;
  font-weight: 500;
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: #1a252f;
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(44, 62, 80, 0.3);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: #5a6268;
  transform: translateY(-1px);
}

.btn-outline-primary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-success {
  background-color: var(--success-color);
  color: var(--white);
}

.btn-danger {
  background-color: var(--danger-color);
  color: var(--white);
}

.btn-warning {
  background-color: var(--warning-color);
  color: var(--gray-900);
}

.btn-info {
  background-color: var(--info-color);
  color: var(--white);
}

.btn-light {
  background-color: var(--gray-100);
  color: var(--gray-800);
  border: 1px solid var(--gray-300);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Form Styles */
.form-control, .form-select {
  background-color: var(--white);
  border: 2px solid var(--gray-300);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: all 0.3s ease;
  color: var(--gray-800);
}

.no-capitalize {
  text-transform: none !important;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(44, 62, 80, 0.25);
  outline: none;
}

.form-label {
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-text {
  color: var(--gray-600);
  font-size: 0.875rem;
}

/* Navbar Styles */
.navbar {
  background-color: var(--white);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  padding: 1rem 0;
}

.navbar-brand {
  font-weight: 700;
  color: var(--primary-color);
  font-size: 1.5rem;
}

.navbar-nav .nav-link {
  color: var(--gray-700);
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
  color: var(--primary-color);
}

.navbar-nav .nav-link.active {
  color: var(--primary-color);
  font-weight: 600;
}

/* Modal Styles */
.modal-content {
  background-color: var(--white);
  border: none;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.modal-header {
  border-bottom: 1px solid var(--gray-200);
  padding: 1.5rem;
}

.modal-title {
  font-weight: 600;
  color: var(--dark-color);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  border-top: 1px solid var(--gray-200);
  padding: 1.5rem;
}

.btn-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.btn-close:hover {
  opacity: 1;
}

/* Table Styles */
.table {
  background-color: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.table thead th {
  background-color: var(--gray-100);
  border-bottom: 2px solid var(--gray-200);
  font-weight: 600;
  color: var(--gray-800);
  padding: 1rem;
}

.table tbody td {
  padding: 1rem;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: middle;
}

.table tbody tr:hover {
  background-color: var(--gray-100);
}

/* Alert Styles */
.alert {
  border: none;
  border-radius: 12px;
  padding: 1rem 1.5rem;
  margin-bottom: 1rem;
}

.alert-success {
  background-color: #d4edda;
  color: #155724;
  border-left: 4px solid var(--success-color);
}

.alert-danger {
  background-color: #f8d7da;
  color: #721c24;
  border-left: 4px solid var(--danger-color);
}

.alert-warning {
  background-color: #fff3cd;
  color: #856404;
  border-left: 4px solid var(--warning-color);
}

.alert-info {
  background-color: #d1ecf1;
  color: #0c5460;
  border-left: 4px solid var(--info-color);
}

/* Pagination Styles */
.pagination {
  margin: 2rem 0;
}

.page-link {
  color: var(--primary-color);
  border: 1px solid var(--gray-300);
  padding: 0.75rem 1rem;
  margin: 0 0.25rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.page-link:hover {
  background-color: var(--primary-color);
  color: var(--white);
  border-color: var(--primary-color);
}

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

/* Footer Styles */
footer {
  background-color: var(--dark-color);
  color: var(--white);
  padding: 3rem 0 1rem;
}

footer h5 {
  color: var(--white);
  font-weight: 600;
  margin-bottom: 1rem;
}

footer p, footer a {
  color: #bdc3c7;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

/* Utility Classes */
.text-primary { color: var(--primary-color) !important; }
.text-secondary { color: var(--secondary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-secondary { background-color: var(--secondary-color) !important; }
.bg-light { background-color: var(--gray-100) !important; }
.bg-dark { background-color: var(--dark-color) !important; }

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

/* Sidebar Styles */
.sidebar {
  background-color: var(--white);
  border-right: 1px solid var(--gray-200);
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.08);
}

.sidebar .nav-link {
  color: var(--gray-700);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  margin: 0.25rem 1rem;
  transition: all 0.3s ease;
}

.sidebar .nav-link:hover {
  background-color: var(--gray-100);
  color: var(--primary-color);
}

.sidebar .nav-link.active {
  background-color: var(--primary-color);
  color: var(--white);
}

/* Loading Spinner */
.spinner-border {
  color: var(--primary-color);
}

/* Badge Styles */
.badge {
  border-radius: 6px;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
}

.badge-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.badge-success {
  background-color: var(--success-color);
  color: var(--white);
}

.badge-danger {
  background-color: var(--danger-color);
  color: var(--white);
}

.badge-warning {
  background-color: var(--warning-color);
  color: var(--gray-900);
}

/* Dropdown Styles */
.dropdown-menu {
  background-color: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  padding: 0.5rem 0;
}

.dropdown-item {
  color: var(--gray-700);
  padding: 0.75rem 1.5rem;
  transition: all 0.3s ease;
}

.dropdown-item:hover {
  background-color: var(--gray-100);
  color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  
  .card-body {
    padding: 1rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
  }
}

@media (max-width: 576px) {
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .modal-body {
    padding: 1rem;
  }
  
  .table-responsive {
    font-size: 0.875rem;
  }
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
  animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: var(--primary-color);
  color: var(--white);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.scroll-to-top:hover {
  background-color: #1a252f;
  transform: translateY(-2px);
}

.scroll-to-top.show {
  display: flex;
}

#scrollToTopBtn {
  display: none;
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 9999;
  background: linear-gradient(135deg, #4A90E2 0%, #64B5F6 100%);
  color: #fff;
  border: 2px solid #fff;
  border-radius: 50%;
  width: 56px;
  height: 56px;
  box-shadow: 0 4px 16px rgba(74, 144, 226, 0.4), 0 2px 8px rgba(0,0,0,0.2);
  font-size: 1.5rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  opacity: 0.95;
}

#scrollToTopBtn:hover {
  background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 6px 20px rgba(74, 144, 226, 0.6), 0 4px 12px rgba(0,0,0,0.3);
  opacity: 1;
}

#scrollToTopBtn:active {
  transform: translateY(-1px) scale(1.05);
}

#scrollToTopBtn .scroll-top-icon {
  font-size: 1.5rem;
  line-height: 1;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}