/* ================ BASE & VARIABLES ================ */
:root {
  /* Color Palette */
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-darker: #4338ca;
  --primary-light: #a5b4fc;
  --primary-lighter: #c7d2fe;
  --primary-ultralight: #e0e7ff;
  
  --secondary: #10b981;
  --secondary-dark: #0d9c6e;
  --secondary-light: #6ee7b7;
  
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --danger-light: #fca5a5;
  
  --warning: #f59e0b;
  --warning-dark: #d97706;
  --warning-light: #fcd34d;
  
  --info: #3b82f6;
  --info-dark: #2563eb;
  --info-light: #93c5fd;
  
  --light: #f9fafb;
  --lighter: #f3f4f6;
  --dark: #1f2937;
  --darker: #111827;
  --gray: #6b7280;
  --gray-light: #e5e7eb;
  --gray-lighter: #f4f4f5;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-primary: 0 4px 14px 0 rgba(99, 102, 241, 0.3);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  
  /* Typography */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.25rem;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: #f8fafc;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ================ ANIMATIONS ================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

@keyframes shimmer {
  0% { background-position: -468px 0 }
  100% { background-position: 468px 0 }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* ================ LAYOUT & CONTAINERS ================ */
.student-management-container {
  max-width: 1800px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md);
  opacity: 0;
  animation: fadeIn 0.6s ease-out forwards;
  min-height: 100vh;
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.gap-1 {
  gap: var(--space-sm);
}

.gap-2 {
  gap: var(--space);
}

.gap-3 {
  gap: var(--space-md);
}

/* ================ HEADER SECTION ================ */
.header-section {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-xl);
  gap: var(--space);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--darker);
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  position: relative;
  letter-spacing: -0.025em;
}

.page-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.page-title:hover::after {
  width: 80px;
}

.action-buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* ================ FILTER PANEL ================ */
.filter-panel {
  background-color: white;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-lg);
  display: none;
  transform-origin: top;
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: var(--transition);
}

.filter-panel.active {
  display: block;
  animation: slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.filter-panel .grid {
  gap: var(--space);
}

.filter-panel label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--darker);
  margin-bottom: var(--space-xs);
  display: block;
}

.filter-panel select, 
.filter-panel input {
  width: 100%;
  padding: 0.75rem var(--space);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  font-size: var(--text-base);
  transition: var(--transition-fast);
  background-color: white;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1em;
}

.filter-panel input {
  background-image: none;
}

.filter-panel select:focus, 
.filter-panel input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.filter-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-top: var(--space);
}

/* ================ TABLE STYLES ================ */
.table-container {
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  overflow: hidden;
  border: 1px solid rgba(99, 102, 241, 0.1);
  transition: var(--transition);
  position: relative;
}

.table-container:hover {
  box-shadow: var(--shadow-md);
}

.table-container table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 800px;
}

.table-container thead {
  background-color: var(--light);
  position: sticky;
  top: 0;
  z-index: 10;
}

.table-container th {
  position: relative;
  padding: var(--space) var(--space-md);
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--text-xs);
  letter-spacing: 0.05em;
  color: var(--gray);
  text-align: left;
  white-space: nowrap;
}

.table-container th.sortable {
  cursor: pointer;
  transition: var(--transition-fast);
}

.table-container th.sortable:hover {
  color: var(--primary);
}

.table-container th.sortable::after {
  content: '↕';
  display: inline-block;
  margin-left: var(--space-xs);
  opacity: 0.5;
  transition: var(--transition-fast);
}

.table-container th.sortable:hover::after {
  opacity: 1;
}

.table-container th.sorted-asc::after {
  content: '↑';
  opacity: 1;
  color: var(--primary);
}

.table-container th.sorted-desc::after {
  content: '↓';
  opacity: 1;
  color: var(--primary);
}

.table-container th::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gray-light), transparent);
}

.table-container td {
  padding: var(--space) var(--space-md);
  border-bottom: 1px solid var(--gray-light);
  transition: var(--transition-fast);
  vertical-align: middle;
}

.table-container tr:last-child td {
  border-bottom: none;
}

.table-container tr {
  opacity: 0;
  transform: translateY(10px);
  animation: fadeIn 0.5s ease-out forwards;
}

.table-container tr:nth-child(1) { animation-delay: 0.1s; }
.table-container tr:nth-child(2) { animation-delay: 0.15s; }
.table-container tr:nth-child(3) { animation-delay: 0.2s; }
.table-container tr:nth-child(4) { animation-delay: 0.25s; }
.table-container tr:nth-child(5) { animation-delay: 0.3s; }
/* Add more if needed */

.table-container tr:hover td {
  background-color: rgba(99, 102, 241, 0.03);
}

/* Student avatar/circle */
.student-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-right: var(--space);
  flex-shrink: 0;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.student-avatar:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow);
}

.student-avatar.large {
  width: 48px;
  height: 48px;
  font-size: var(--text-lg);
}

.student-avatar.xlarge {
  width: 80px;
  height: 80px;
  font-size: var(--text-2xl);
}

.student-avatar.secondary {
  background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
}

.student-avatar.danger {
  background: linear-gradient(135deg, var(--danger), var(--danger-dark));
}

.student-avatar.warning {
  background: linear-gradient(135deg, var(--warning), var(--warning-dark));
}

/* Status badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: capitalize;
  transition: var(--transition-fast);
}

.status-badge i {
  margin-right: var(--space-xs);
}

.status-badge.active {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--secondary);
}

.status-badge.active:hover {
  background-color: rgba(16, 185, 129, 0.2);
}

.status-badge.inactive {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.status-badge.inactive:hover {
  background-color: rgba(239, 68, 68, 0.2);
}

.status-badge.pending {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.status-badge.pending:hover {
  background-color: rgba(245, 158, 11, 0.2);
}

/* Progress indicator */
.progress-bar {
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--gray-lighter);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transition: width 0.6s ease;
}

.progress-fill.success {
  background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
}

.progress-fill.warning {
  background: linear-gradient(90deg, var(--warning), var(--warning-light));
}

/* ================ BUTTON STYLES ================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: var(--text-base);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: translateY(1px);
}

.btn i {
  margin-right: var(--space-sm);
  font-size: var(--text-sm);
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: 0 6px 12px -2px rgba(99, 102, 241, 0.3);
}

.btn-primary:focus {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background-color: rgba(99, 102, 241, 0.05);
}

.btn-outline:focus {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.btn-filter {
  background-color: white;
  color: var(--primary);
  border: 1px solid var(--primary-light);
}

.btn-filter:hover {
  background-color: rgba(99, 102, 241, 0.05);
  border-color: var(--primary);
}

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

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

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

.btn-success:hover {
  background-color: var(--secondary-dark);
}

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

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

.btn-light {
  background-color: var(--light);
  color: var(--dark);
}

.btn-light:hover {
  background-color: var(--gray-lighter);
}

/* Icon buttons */
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-full);
  justify-content: center;
}

.btn-icon i {
  margin-right: 0;
}

.btn-icon-sm {
  width: 30px;
  height: 30px;
  font-size: var(--text-sm);
}

.btn-icon-lg {
  width: 44px;
  height: 44px;
  font-size: var(--text-md);
}

/* Loading state */
.btn-loading {
  pointer-events: none;
  position: relative;
  color: transparent;
}

.btn-loading::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-full);
  border-top-color: white;
  animation: spin 1s linear infinite;
}

/* ================ MODAL STYLES ================ */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: white;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 32rem;
  max-height: 90vh;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(99, 102, 241, 0.2);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-header {
  padding: var(--space-md);
  border-bottom: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.modal-header i {
  font-size: var(--text-xl);
  margin-right: var(--space);
  color: var(--primary);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--darker);
}

.modal-close {
  margin-left: auto;
  background: none;
  border: none;
  font-size: var(--text-lg);
  color: var(--gray);
  cursor: pointer;
  transition: var(--transition-fast);
  padding: var(--space-xs);
  border-radius: var(--radius-full);
}

.modal-close:hover {
  color: var(--danger);
  background-color: rgba(239, 68, 68, 0.1);
}

.modal-body {
  padding: var(--space-md);
  overflow-y: auto;
  flex-grow: 1;
}

.modal-footer {
  padding: var(--space);
  border-top: 1px solid var(--gray-light);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* Form elements in modals */
.form-group {
  margin-bottom: var(--space);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--darker);
}

.form-control {
  width: 100%;
  padding: 0.75rem var(--space);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius);
  font-size: var(--text-base);
  transition: var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-control::placeholder {
  color: var(--gray);
  opacity: 0.7;
}

/* Input groups */
.input-group {
  display: flex;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.input-group .form-control {
  border-radius: 0;
  border-right: none;
  flex-grow: 1;
}

.input-group .btn {
  border-radius: 0;
  flex-shrink: 0;
}

/* Checkbox and radio */
.form-check {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-sm);
  cursor: pointer;
}

.form-check-input {
  width: 18px;
  height: 18px;
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  margin-right: var(--space-sm);
  appearance: none;
  transition: var(--transition-fast);
  position: relative;
}

.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

.form-check-input:checked::after {
  content: '✓';
  position: absolute;
  color: white;
  font-size: var(--text-xs);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.form-check-label {
  font-size: var(--text-sm);
  color: var(--dark);
}

/* ================ PAGINATION ================ */
.pagination-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-lg);
  padding: var(--space) 0;
}

.pagination-info {
  font-size: var(--text-sm);
  color: var(--gray);
}

.pagination-buttons {
  display: flex;
  gap: var(--space-xs);
}

.pagination-btn {
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-light);
  background-color: white;
  color: var(--dark);
  font-weight: 500;
  transition: var(--transition-fast);
  min-width: 36px;
  text-align: center;
  cursor: pointer;
}

.pagination-btn:hover {
  background-color: var(--light);
  border-color: var(--gray);
}

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

.pagination-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ================ TOOLTIPS ================ */
.tooltip {
  position: absolute;
  z-index: 100;
  padding: 0.5rem 0.75rem;
  background-color: var(--darker);
  color: white;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  pointer-events: none;
  opacity: 0;
  transform: translateY(5px);
  transition: var(--transition-fast);
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  max-width: 200px;
  text-align: center;
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--darker) transparent transparent transparent;
}

.tooltip.active {
  opacity: 1;
  transform: translateY(0);
}

.tooltip.tooltip-bottom::after {
  top: auto;
  bottom: 100%;
  border-color: transparent transparent var(--darker) transparent;
}

/* ================ LOADING STATES ================ */
.loading-shimmer {
  background: linear-gradient(to right, #f6f7f8 0%, #edeef1 20%, #f6f7f8 40%, #f6f7f8 100%);
  background-size: 800px 104px;
  animation: shimmer 1.5s infinite linear;
}

.loading-text {
  height: 1rem;
  width: 100%;
  border-radius: var(--radius-sm);
  background-color: var(--gray-lighter);
  display: inline-block;
}

.loading-circle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--gray-lighter);
}

.loading-table-row td {
  padding: var(--space-md);
}

/* ================ CARD STYLES ================ */
.card {
  background-color: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  padding: var(--space-md);
  transition: var(--transition);
  border: 1px solid rgba(99, 102, 241, 0.1);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--gray-light);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--darker);
}

.card-body {
  margin-bottom: var(--space);
}

.card-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--gray-light);
}

/* ================ ALERTS & NOTIFICATIONS ================ */
.alert {
  padding: var(--space);
  border-radius: var(--radius);
  margin-bottom: var(--space);
  display: flex;
  align-items: flex-start;
}

.alert i {
  margin-right: var(--space-sm);
  font-size: var(--text-lg);
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--secondary-dark);
  border-left: 4px solid var(--secondary);
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--danger-dark);
  border-left: 4px solid var(--danger);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning-dark);
  border-left: 4px solid var(--warning);
}

.alert-info {
  background-color: rgba(59, 130, 246, 0.1);
  color: var(--info-dark);
  border-left: 4px solid var(--info);
}

/* Toast notifications */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  z-index: 1100;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  max-width: 350px;
  opacity: 0;
  transform: translateX(20px);
  transition: var(--transition);
  background-color: white;
}

.toast.show {
  opacity: 1;
  transform: translateX(0);
}

.toast i {
  margin-right: var(--space-sm);
  font-size: var(--text-lg);
}

.toast-success i {
  color: var(--secondary);
}

.toast-danger i {
  color: var(--danger);
}

.toast-warning i {
  color: var(--warning);
}

.toast-info i {
  color: var(--info);
}

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--gray);
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-full);
}

.toast-close:hover {
  color: var(--dark);
  background-color: rgba(0, 0, 0, 0.05);
}

/* ================ TABS ================ */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--gray-light);
  margin-bottom: var(--space-lg);
}

.tab {
  padding: var(--space-sm) var(--space);
  margin-right: var(--space);
  font-weight: 600;
  color: var(--gray);
  cursor: pointer;
  position: relative;
  transition: var(--transition-fast);
}

.tab:hover {
  color: var(--primary);
}

.tab.active {
  color: var(--primary);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--primary);
}

/* ================ RESPONSIVE ADJUSTMENTS ================ */
@media (min-width: 768px) {
  .header-section {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  
  .page-title {
    margin-bottom: 0;
    font-size: var(--text-3xl);
  }
  
  .filter-panel .grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .modal-overlay .modal-content {
    max-width: 42rem;
  }
}

@media (max-width: 767px) {
  .student-management-container {
    padding: var(--space) var(--space-sm);
  }
  
  .table-container {
    border-radius: var(--radius);
  }
  
  .table-container th, 
  .table-container td {
    padding: var(--space-sm) var(--space);
  }
  
  .action-buttons {
    gap: var(--space-xs);
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
  }
  
  .modal-overlay .modal-content {
    margin: 0 var(--space-sm);
    max-height: 80vh;
  }
  
  .modal-overlay .modal-header,
  .modal-overlay .modal-body,
  .modal-overlay .modal-footer {
    padding: var(--space);
  }
  
  .filter-panel .grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .table-container {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }
  
  .pagination-container {
    flex-direction: column;
    gap: var(--space);
    align-items: stretch;
  }
  
  .pagination-buttons {
    justify-content: center;
  }
  
  .btn-icon-text {
    width: auto;
    height: auto;
    padding: 0.5rem;
  }
  
  .btn-icon-text span {
    display: none;
  }
  
  .page-title {
    font-size: var(--text-xl);
  }
  
  .modal-overlay .modal-content {
    max-width: 95%;
  }
}

/* ================ UTILITY CLASSES ================ */
.text-primary {
  color: var(--primary);
}

.text-success {
  color: var(--secondary);
}

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

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

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

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

.bg-success {
  background-color: var(--secondary);
}

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

.bg-warning {
  background-color: var(--warning);
}

.mt-1 {
  margin-top: var(--space-sm);
}

.mt-2 {
  margin-top: var(--space);
}

.mt-3 {
  margin-top: var(--space-md);
}

.mb-1 {
  margin-bottom: var(--space-sm);
}

.mb-2 {
  margin-bottom: var(--space);
}

.mb-3 {
  margin-bottom: var(--space-md);
}

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.font-bold {
  font-weight: 700;
}

.hidden {
  display: none;
}

/* Print styles */
@media print {
  .no-print {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
  
  .table-container {
    box-shadow: none;
    border: none;
  }
}