/* =========================================================
   Frontend Components (UI Kit) - Production Grade
   Namespaced with fe-
   Uses design tokens with smart fallbacks
========================================================= */

:root {
  /* Design Tokens - Fallback values */
  --fe-bg: var(--color-bg, #0b1220);
  --fe-surface: var(--color-surface, rgba(255, 255, 255, 0.06));
  --fe-surface-2: var(--color-surface-2, rgba(255, 255, 255, 0.10));
  --fe-surface-hover: var(--color-surface-hover, rgba(255, 255, 255, 0.12));
  --fe-border: var(--color-border, rgba(255, 255, 255, 0.12));
  --fe-border-hover: var(--color-border-hover, rgba(255, 255, 255, 0.20));
  
  --fe-text: var(--color-text, rgba(255, 255, 255, 0.92));
  --fe-text-muted: var(--color-text-muted, rgba(255, 255, 255, 0.70));
  --fe-text-subtle: var(--color-text-subtle, rgba(255, 255, 255, 0.50));
  
  --fe-primary: var(--color-primary, #3b82f6);
  --fe-primary-2: var(--color-primary-2, #2563eb);
  --fe-primary-hover: var(--color-primary-hover, #1d4ed8);
  
  --fe-danger: var(--color-danger, #ef4444);
  --fe-danger-hover: var(--color-danger-hover, #dc2626);
  --fe-success: var(--color-success, #22c55e);
  --fe-success-hover: var(--color-success-hover, #16a34a);
  --fe-warning: var(--color-warning, #f59e0b);
  --fe-warning-hover: var(--color-warning-hover, #d97706);
  --fe-info: var(--color-info, #06b6d4);
  
  --fe-radius-sm: var(--radius-sm, 8px);
  --fe-radius-md: var(--radius-md, 12px);
  --fe-radius-lg: var(--radius-lg, 16px);
  --fe-radius-xl: var(--radius-xl, 20px);
  
  --fe-shadow-sm: var(--shadow-sm, 0 2px 8px rgba(0, 0, 0, 0.15));
  --fe-shadow-md: var(--shadow-md, 0 8px 24px rgba(0, 0, 0, 0.25));
  --fe-shadow-lg: var(--shadow-lg, 0 16px 48px rgba(0, 0, 0, 0.35));
  
  --fe-ring: 0 0 0 3px rgba(59, 130, 246, 0.30);
  --fe-ring-danger: 0 0 0 3px rgba(239, 68, 68, 0.30);
  --fe-ring-success: 0 0 0 3px rgba(34, 197, 94, 0.30);
  
  --fe-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --fe-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --fe-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* -----------------------------
   Buttons - Enhanced
------------------------------*/
.fe-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  
  padding: 10px 16px;
  border-radius: var(--fe-radius-sm);
  border: 1px solid transparent;
  
  font-family: inherit;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  
  transition: 
    transform var(--fe-transition-fast),
    background-color var(--fe-transition-base),
    border-color var(--fe-transition-base),
    box-shadow var(--fe-transition-base),
    color var(--fe-transition-base),
    filter var(--fe-transition-base);
  
  position: relative;
  overflow: hidden;
}

.fe-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
  opacity: 0;
  transition: opacity var(--fe-transition-fast);
}

.fe-btn:hover::before {
  opacity: 1;
}

.fe-btn:active {
  transform: scale(0.97);
}

.fe-btn:focus-visible {
  outline: none;
  box-shadow: var(--fe-ring);
}

.fe-btn:disabled,
.fe-btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.fe-btn-primary {
  background: linear-gradient(135deg, var(--fe-primary) 0%, var(--fe-primary-2) 100%);
  color: #fff;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.fe-btn-primary:hover {
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.35);
}

.fe-btn-secondary {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--fe-text);
}

.fe-btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

.fe-btn-outline {
  background: transparent;
  color: var(--fe-text);
  border-color: var(--fe-border);
}

.fe-btn-outline:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--fe-border-hover);
}

.fe-btn-ghost {
  background: transparent;
  color: var(--fe-text-muted);
  border-color: transparent;
}

.fe-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--fe-text);
}

.fe-btn-danger {
  background: var(--fe-danger);
  color: #fff;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}

.fe-btn-danger:hover {
  background: var(--fe-danger-hover);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.35);
}

.fe-btn-danger:focus-visible {
  box-shadow: var(--fe-ring-danger);
}

.fe-btn-success {
  background: var(--fe-success);
  color: #fff;
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.25);
}

.fe-btn-success:hover {
  background: var(--fe-success-hover);
  box-shadow: 0 6px 20px rgba(34, 197, 94, 0.35);
}

.fe-btn-success:focus-visible {
  box-shadow: var(--fe-ring-success);
}

/* Button Sizes */
.fe-btn-xs {
  padding: 6px 12px;
  font-size: 13px;
  gap: 6px;
}

.fe-btn-sm {
  padding: 8px 14px;
  font-size: 14px;
  gap: 6px;
}

.fe-btn-lg {
  padding: 12px 20px;
  font-size: 16px;
  gap: 10px;
}

.fe-btn-xl {
  padding: 14px 24px;
  font-size: 18px;
  gap: 12px;
}

/* Button Modifiers */
.fe-btn-block {
  width: 100%;
  display: flex;
}

.fe-btn-icon {
  padding: 10px;
  aspect-ratio: 1;
}

.fe-btn-icon.fe-btn-sm {
  padding: 8px;
}

.fe-btn-icon.fe-btn-lg {
  padding: 12px;
}

/* Button Groups */
.fe-btn-group {
  display: inline-flex;
  border-radius: var(--fe-radius-sm);
  overflow: hidden;
}

.fe-btn-group .fe-btn {
  border-radius: 0;
  border-right-width: 0;
}

.fe-btn-group .fe-btn:first-child {
  border-radius: var(--fe-radius-sm) 0 0 var(--fe-radius-sm);
}

.fe-btn-group .fe-btn:last-child {
  border-radius: 0 var(--fe-radius-sm) var(--fe-radius-sm) 0;
  border-right-width: 1px;
}

/* -----------------------------
   Badges - Enhanced
------------------------------*/
.fe-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--fe-border);
  background: var(--fe-surface);
  color: var(--fe-text);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
}

.fe-badge-sm {
  padding: 4px 10px;
  font-size: 12px;
  gap: 4px;
}

.fe-badge-lg {
  padding: 8px 14px;
  font-size: 14px;
  gap: 8px;
}

/* Badge Variants */
.fe-badge-primary {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.30);
  color: #60a5fa;
}

.fe-badge-success {
  background: rgba(34, 197, 94, 0.15);
  border-color: rgba(34, 197, 94, 0.30);
  color: #4ade80;
}

.fe-badge-danger {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.30);
  color: #f87171;
}

.fe-badge-warning {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.30);
  color: #fbbf24;
}

.fe-badge-info {
  background: rgba(6, 182, 212, 0.15);
  border-color: rgba(6, 182, 212, 0.30);
  color: #22d3ee;
}

.fe-badge-dot {
  padding-left: 8px;
}

.fe-badge-dot::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* -----------------------------
   Cards - Enhanced
------------------------------*/
.fe-card {
  border: 1px solid var(--fe-border);
  background: var(--fe-surface);
  border-radius: var(--fe-radius-md);
  box-shadow: var(--fe-shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--fe-transition-base), transform var(--fe-transition-base), border-color var(--fe-transition-base);
}

.fe-card-hover:hover {
  box-shadow: var(--fe-shadow-md);
  transform: translateY(-2px);
  border-color: var(--fe-border-hover);
}

.fe-card-interactive {
  cursor: pointer;
  user-select: none;
}

.fe-card-interactive:active {
  transform: scale(0.98);
}

.fe-card-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.fe-card-body {
  padding: 20px;
}

.fe-card-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.fe-card-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--fe-text);
  line-height: 1.3;
}

.fe-card-subtitle {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--fe-text-muted);
  line-height: 1.5;
}

.fe-card-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.fe-card-compact .fe-card-header,
.fe-card-compact .fe-card-body {
  padding: 16px;
}

.fe-card-compact .fe-card-footer {
  padding: 12px 16px;
}

/* -----------------------------
   Forms - Enhanced
------------------------------*/
.fe-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--fe-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.fe-label-required::after {
  content: ' *';
  color: var(--fe-danger);
}

.fe-input,
.fe-select,
.fe-textarea {
  width: 100%;
  padding: 11px 14px;
  border-radius: var(--fe-radius-sm);
  border: 1px solid var(--fe-border);
  background: rgba(0, 0, 0, 0.25);
  color: var(--fe-text);
  font-size: 15px;
  font-family: inherit;
  line-height: 1.5;
  
  transition: 
    box-shadow var(--fe-transition-base),
    border-color var(--fe-transition-base),
    background-color var(--fe-transition-base);
}

.fe-input::placeholder,
.fe-textarea::placeholder {
  color: var(--fe-text-subtle);
}

.fe-input:hover,
.fe-select:hover,
.fe-textarea:hover {
  border-color: var(--fe-border-hover);
}

.fe-input:focus,
.fe-select:focus,
.fe-textarea:focus {
  outline: none;
  box-shadow: var(--fe-ring);
  border-color: var(--fe-primary);
  background: rgba(0, 0, 0, 0.35);
}

.fe-input[aria-invalid="true"],
.fe-select[aria-invalid="true"],
.fe-textarea[aria-invalid="true"] {
  border-color: var(--fe-danger);
}

.fe-input[aria-invalid="true"]:focus,
.fe-select[aria-invalid="true"]:focus,
.fe-textarea[aria-invalid="true"]:focus {
  box-shadow: var(--fe-ring-danger);
}

.fe-input:disabled,
.fe-select:disabled,
.fe-textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: rgba(0, 0, 0, 0.15);
}

/* Input Sizes */
.fe-input-sm,
.fe-select-sm {
  padding: 8px 12px;
  font-size: 14px;
}

.fe-input-lg,
.fe-select-lg {
  padding: 14px 16px;
  font-size: 16px;
}

/* Textarea */
.fe-textarea {
  min-height: 120px;
  resize: vertical;
  font-family: inherit;
}

.fe-textarea-sm {
  min-height: 80px;
  padding: 8px 12px;
  font-size: 14px;
}

.fe-textarea-lg {
  min-height: 160px;
  padding: 14px 16px;
  font-size: 16px;
}

/* Select */
.fe-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='rgba(255,255,255,0.7)' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 12px;
  padding-right: 40px;
  cursor: pointer;
}

/* Checkbox & Radio */
.fe-checkbox,
.fe-radio {
  width: 18px;
  height: 18px;
  border-radius: var(--fe-radius-sm);
  border: 1.5px solid var(--fe-border);
  background: rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: background-color var(--fe-transition-base), border-color var(--fe-transition-base);
  appearance: none;
  flex-shrink: 0;
}

.fe-radio {
  border-radius: 50%;
}

.fe-checkbox:hover,
.fe-radio:hover {
  border-color: var(--fe-border-hover);
}

.fe-checkbox:checked,
.fe-radio:checked {
  background: var(--fe-primary);
  border-color: var(--fe-primary);
}

.fe-checkbox:checked {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='white' d='M10 3L4.5 8.5L2 6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.fe-radio:checked {
  background-image: radial-gradient(circle, white 0%, white 30%, transparent 30%);
}

.fe-checkbox:focus,
.fe-radio:focus {
  outline: none;
  box-shadow: var(--fe-ring);
}

/* Form Field Wrapper */
.fe-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fe-field-inline {
  display: flex;
  align-items: center;
  gap: 12px;
}

.fe-field-inline .fe-label {
  margin-bottom: 0;
  cursor: pointer;
}

/* Form Messages */
.fe-help {
  margin-top: 6px;
  font-size: 13px;
  color: var(--fe-text-muted);
  line-height: 1.5;
}

.fe-error {
  margin-top: 6px;
  font-size: 13px;
  color: var(--fe-danger);
  font-weight: 600;
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 6px;
}

.fe-success {
  margin-top: 6px;
  font-size: 13px;
  color: var(--fe-success);
  font-weight: 600;
  line-height: 1.5;
}

/* Form Rows */
.fe-form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 640px) {
  .fe-form-row-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .fe-form-row-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .fe-form-row-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .fe-form-row-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Input Groups */
.fe-input-group {
  display: flex;
  align-items: stretch;
}

.fe-input-group .fe-input {
  border-radius: 0;
  border-right-width: 0;
}

.fe-input-group .fe-input:first-child {
  border-radius: var(--fe-radius-sm) 0 0 var(--fe-radius-sm);
}

.fe-input-group .fe-input:last-child {
  border-radius: 0 var(--fe-radius-sm) var(--fe-radius-sm) 0;
  border-right-width: 1px;
}

.fe-input-group-addon {
  display: flex;
  align-items: center;
  padding: 0 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--fe-border);
  color: var(--fe-text-muted);
  font-size: 14px;
  white-space: nowrap;
}

.fe-input-group-addon:first-child {
  border-radius: var(--fe-radius-sm) 0 0 var(--fe-radius-sm);
  border-right-width: 0;
}

.fe-input-group-addon:last-child {
  border-radius: 0 var(--fe-radius-sm) var(--fe-radius-sm) 0;
  border-left-width: 0;
}

/* -----------------------------
   Alerts - Enhanced
------------------------------*/
.fe-alert {
  border: 1px solid var(--fe-border);
  background: var(--fe-surface);
  border-radius: var(--fe-radius-md);
  padding: 14px 16px;
  color: var(--fe-text);
  display: flex;
  gap: 12px;
  align-items: flex-start;
  line-height: 1.5;
}

.fe-alert-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.fe-alert-content {
  flex: 1;
}

.fe-alert-title {
  font-weight: 700;
  margin: 0 0 4px;
}

.fe-alert-description {
  font-size: 14px;
  color: var(--fe-text-muted);
  margin: 0;
}

.fe-alert-close {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color var(--fe-transition-base);
}

.fe-alert-close:hover {
  background: rgba(255, 255, 255, 0.10);
}

/* Alert Variants */
.fe-alert-success {
  border-color: rgba(34, 197, 94, 0.30);
  background: rgba(34, 197, 94, 0.10);
}

.fe-alert-success .fe-alert-icon,
.fe-alert-success .fe-alert-title {
  color: var(--fe-success);
}

.fe-alert-danger {
  border-color: rgba(239, 68, 68, 0.30);
  background: rgba(239, 68, 68, 0.10);
}

.fe-alert-danger .fe-alert-icon,
.fe-alert-danger .fe-alert-title {
  color: var(--fe-danger);
}

.fe-alert-warning {
  border-color: rgba(245, 158, 11, 0.30);
  background: rgba(245, 158, 11, 0.10);
}

.fe-alert-warning .fe-alert-icon,
.fe-alert-warning .fe-alert-title {
  color: var(--fe-warning);
}

.fe-alert-info {
  border-color: rgba(6, 182, 212, 0.30);
  background: rgba(6, 182, 212, 0.10);
}

.fe-alert-info .fe-alert-icon,
.fe-alert-info .fe-alert-title {
  color: var(--fe-info);
}

/* -----------------------------
   Toast / Notifications
------------------------------*/
.fe-toast-host {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 9999;
  pointer-events: none;
  max-width: calc(100vw - 32px);
}

@media (min-width: 640px) {
  .fe-toast-host {
    right: 24px;
    bottom: 24px;
    max-width: 420px;
  }
}

.fe-toast {
  width: 100%;
  min-width: 320px;
  border-radius: var(--fe-radius-md);
  border: 1px solid var(--fe-border);
  background: rgba(11, 18, 32, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--fe-text);
  box-shadow: var(--fe-shadow-lg);
  padding: 14px 16px;
  pointer-events: auto;
  cursor: pointer;
  animation: fe-toast-slide-in 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transition: opacity var(--fe-transition-base), transform var(--fe-transition-base);
}

@media (max-width: 639px) {
  .fe-toast {
    min-width: 280px;
  }
}

.fe-toast:hover {
  opacity: 0.95;
}

.fe-toast.fe-toast-removing {
  animation: fe-toast-slide-out 0.2s cubic-bezier(0.4, 0, 1, 1) forwards;
}

@keyframes fe-toast-slide-in {
  from {
    transform: translateX(100%) scale(0.95);
    opacity: 0;
  }
  to {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

@keyframes fe-toast-slide-out {
  from {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
  to {
    transform: translateX(100%) scale(0.95);
    opacity: 0;
  }
}

.fe-toast-title {
  font-weight: 700;
  margin: 0 0 4px;
  font-size: 15px;
  line-height: 1.4;
}

.fe-toast-desc {
  margin: 0;
  color: var(--fe-text-muted);
  font-size: 14px;
  line-height: 1.5;
}

.fe-toast-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--fe-primary);
  border-radius: 0 0 var(--fe-radius-md) var(--fe-radius-md);
  animation: fe-toast-progress linear;
}

@keyframes fe-toast-progress {
  from {
    width: 100%;
  }
  to {
    width: 0%;
  }
}

/* -----------------------------
   Progress Indicators
------------------------------*/
.fe-progress {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.10);
  border-radius: 999px;
  overflow: hidden;
}

.fe-progress-bar {
  height: 100%;
  background: var(--fe-primary);
  border-radius: 999px;
  transition: width var(--fe-transition-slow);
}

.fe-progress-sm {
  height: 4px;
}

.fe-progress-lg {
  height: 12px;
}

/* Spinner */
.fe-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--fe-primary);
  border-radius: 50%;
  animation: fe-spin 0.6s linear infinite;
}

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

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

@keyframes fe-spin {
  to {
    transform: rotate(360deg);
  }
}

/* -----------------------------
   Utilities
------------------------------*/
.fe-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.10);
  margin: 20px 0;
  border: none;
}

.fe-divider-vertical {
  width: 1px;
  height: auto;
  background: rgba(255, 255, 255, 0.10);
  margin: 0 20px;
}

/* Text utilities */
.fe-muted {
  color: var(--fe-text-muted);
}

.fe-subtle {
  color: var(--fe-text-subtle);
}

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

.fe-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fe-line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.fe-line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Spacing utilities */
.fe-mt-1 { margin-top: 8px; }
.fe-mt-2 { margin-top: 16px; }
.fe-mt-3 { margin-top: 24px; }
.fe-mt-4 { margin-top: 32px; }

.fe-mb-1 { margin-bottom: 8px; }
.fe-mb-2 { margin-bottom: 16px; }
.fe-mb-3 { margin-bottom: 24px; }
.fe-mb-4 { margin-bottom: 32px; }

.fe-gap-1 { gap: 8px; }
.fe-gap-2 { gap: 16px; }
.fe-gap-3 { gap: 24px; }
.fe-gap-4 { gap: 32px; }

/* Flexbox utilities */
.fe-flex {
  display: flex;
}

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

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

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

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

.fe-flex-wrap {
  flex-wrap: wrap;
}