/* UI Enhancements - Modern interactions and animations */

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes slideInDown {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

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

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

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Enhanced Cards */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-normal);
  animation: slideInUp 600ms ease-out;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-gray-200);
  background: linear-gradient(135deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
}

.card-header h2,
.card-header h3 {
  margin: 0;
  color: var(--color-gray-900);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-gray-50);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* Alerts with Animations */
.alert {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  animation: slideInDown 400ms ease-out;
  border-left: 4px solid;
}

.alert-success {
  background-color: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success);
}

.alert-error {
  background-color: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error);
}

.alert-warning {
  background-color: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.alert-info {
  background-color: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info);
}

.alert-close {
  margin-inline-start: auto;
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  background-color: var(--color-gray-200);
  color: var(--color-gray-900);
  transition: all var(--transition-fast);
}

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

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

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

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

.badge:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* Input Enhancements */
.form-group {
  margin-bottom: var(--spacing-lg);
  animation: fadeIn 400ms ease-out;
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  transition: color var(--transition-fast);
}

.form-group input:focus ~ label,
.form-group textarea:focus ~ label,
.form-group select:focus ~ label {
  color: var(--color-primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="date"],
textarea,
select {
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-lighter);
  transform: scale(1.01);
}

/* Loading States */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border-width: 2px;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 4px;
}

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 0%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 100%
  );
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

.skeleton-text {
  height: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

.skeleton-card {
  height: 200px;
  border-radius: var(--radius-lg);
}

/* Tooltips */
.tooltip {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted var(--color-primary);
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-gray-900);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  margin-bottom: var(--spacing-sm);
  z-index: var(--z-tooltip);
}

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

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  list-style: none;
  animation: slideInDown 400ms ease-out;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  margin: 0;
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
}

.breadcrumb a:hover {
  background-color: var(--color-primary-lighter);
  transform: translateX(2px);
}

.breadcrumb li.active {
  color: var(--color-gray-500);
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  margin: 0 var(--spacing-md);
  color: var(--color-gray-300);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-2xl) 0;
  list-style: none;
  animation: fadeIn 400ms ease-out;
}

.pagination li {
  margin: 0;
}

.pagination a,
.pagination button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-sm);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
  color: var(--color-gray-900);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  font-weight: var(--font-weight-medium);
}

.pagination a:hover,
.pagination button:hover {
  background-color: var(--color-primary-lighter);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.pagination .disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
}

/* Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.dropdown-toggle::after {
  content: '';
  display: inline-block;
  width: 0.4em;
  height: 0.4em;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  transition: transform var(--transition-fast);
}

.dropdown.active .dropdown-toggle::after {
  transform: rotate(135deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  list-style: none;
  padding: var(--spacing-sm) 0;
  margin: var(--spacing-sm) 0 0 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  z-index: var(--z-dropdown);
}

.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-gray-900);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  background-color: var(--color-primary-lighter);
  color: var(--color-primary);
  padding-inline-start: calc(var(--spacing-lg) + 4px);
}

.dropdown-menu a.active {
  background-color: var(--color-primary-lighter);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

/* Modal Enhancements */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: var(--z-modal-backdrop);
}

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

.modal {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  animation: slideInUp 300ms ease-out;
}

.modal-backdrop.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h2 {
  margin: 0;
  font-size: var(--font-size-xl);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: var(--color-gray-900);
}

.modal-body {
  padding: var(--spacing-xl);
}

.modal-footer {
  padding: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-200);
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-gray-200);
  gap: 0;
  margin-bottom: var(--spacing-lg);
}

.tab-button {
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-normal);
  margin-bottom: -2px;
}

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

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

.tab-content {
  display: none;
  animation: fadeIn 300ms ease-out;
}

.tab-content.active {
  display: block;
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--color-gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--spacing-md) 0;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
  box-shadow: var(--shadow-md);
}

.progress-bar.active {
  animation: pulse 2s ease-in-out infinite;
}

/* Toast Notifications */
.toast {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  padding: var(--spacing-lg);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  min-width: 300px;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideInRight 300ms ease-out;
  z-index: var(--z-fixed);
}

.toast-success {
  border-left: 4px solid var(--color-success);
}

.toast-error {
  border-left: 4px solid var(--color-error);
}

.toast-warning {
  border-left: 4px solid var(--color-warning);
}

.toast-info {
  border-left: 4px solid var(--color-info);
}

.toast-close {
  margin-inline-start: auto;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
  padding: 0;
}

.toast-close:hover {
  color: var(--color-gray-900);
}

/* Responsive Design */
@media (max-width: 768px) {
  .modal {
    max-width: calc(100% - var(--spacing-lg));
  }

  .toast {
    right: var(--spacing-md);
    left: var(--spacing-md);
    bottom: var(--spacing-md);
    min-width: auto;
  }

  .pagination {
    gap: var(--spacing-xs);
  }

  .pagination a,
  .pagination button {
    min-width: 36px;
    height: 36px;
    font-size: var(--font-size-sm);
  }

  .card {
    border-radius: var(--radius-md);
  }

  .alert {
    flex-direction: column;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.text-muted {
  color: var(--color-gray-500);
}

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

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

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

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }
.mt-6 { margin-top: var(--spacing-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }
.mb-6 { margin-bottom: var(--spacing-2xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }
.p-6 { padding: var(--spacing-2xl); }

.rounded {
  border-radius: var(--radius-md);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-full {
  border-radius: var(--radius-full);
}

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

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

.opacity-50 {
  opacity: 0.5;
}

.opacity-75 {
  opacity: 0.75;
}