Corp/backend/static/scss/components/_badges-telegram-style.scss

// =============================================================================
// Telegram-Style Badges
// =============================================================================
// Based on Telegram Web K design system (morethanwords/tweb)
// Perfect circles, smooth animations, professional appearance

// Variables
$badge-height: 20px;
$badge-padding-x: 6px;
$badge-font-size: 11px;
$badge-font-weight: 600;
$badge-border-radius: 10px; // Fixed value for perfect circles, not percentage
$badge-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
$badge-transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);

// Size variants
$badge-sm-height: 18px;
$badge-lg-height: 24px;
$badge-xl-height: 28px;

// =============================================================================
// Base Badge Class
// =============================================================================
.badge-telegram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: $badge-height;
  min-width: $badge-height;
  padding: 0 $badge-padding-x;
  font-size: $badge-font-size;
  font-weight: $badge-font-weight;
  line-height: 1;
  color: white;
  background: var(--bs-danger);
  border-radius: $badge-border-radius;
  box-shadow: $badge-shadow;
  transition: $badge-transition;
  user-select: none;

  // Auto-hide when empty
  &:empty {
    display: none;
  }

  // Hide when count is 0
  &[data-count="0"] {
    display: none;
  }
}

// =============================================================================
// Size Variants
// =============================================================================
.badge-telegram-sm {
  height: $badge-sm-height;
  min-width: $badge-sm-height;
  font-size: 10px;
  padding: 0 5px;
  border-radius: 9px;
}

.badge-telegram-lg {
  height: $badge-lg-height;
  min-width: $badge-lg-height;
  font-size: 12px;
  padding: 0 7px;
  border-radius: 12px;
}

.badge-telegram-xl {
  height: $badge-xl-height;
  min-width: $badge-xl-height;
  font-size: 13px;
  padding: 0 8px;
  border-radius: 14px;
}

// =============================================================================
// Color Variants
// =============================================================================
.badge-telegram-primary {
  background: var(--bs-primary);
}

.badge-telegram-muted {
  background: var(--bs-secondary);
  opacity: 0.8;
}

.badge-telegram-success {
  background: var(--bs-success);
}

.badge-telegram-warning {
  background: var(--bs-warning);
  color: var(--bs-dark);
}

.badge-telegram-info {
  background: var(--bs-info);
}

.badge-telegram-mention {
  background: #0088cc; // Telegram mention blue
}

// =============================================================================
// Animations
// =============================================================================
@keyframes badge-scale-in {
  from {
    transform: scale(0);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes badge-pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes badge-scale-out {
  from {
    transform: scale(1);
    opacity: 1;
  }
  to {
    transform: scale(0);
    opacity: 0;
  }
}

// Animation Classes
.badge-telegram.animate-in {
  animation: badge-scale-in 0.2s $badge-transition;
}

.badge-telegram.pulse {
  animation: badge-pulse 0.6s $badge-transition;
}

.badge-telegram.animate-out {
  animation: badge-scale-out 0.2s $badge-transition;
}

// =============================================================================
// Positioning Variants
// =============================================================================
// On avatar
.badge-telegram-avatar {
  position: absolute;
  bottom: -2px;
  right: -2px;
  border: 2px solid white;
}

// On button/icon
.badge-telegram-button {
  position: absolute;
  top: -6px;
  right: -10px;
  z-index: 1;
}

// Inline with text
.badge-telegram-inline {
  position: relative;
  top: -1px;
  margin-left: 4px;
}

// =============================================================================
// Special Effects
// =============================================================================
// Dot badge (no number)
.badge-telegram-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  padding: 0;
  border-radius: 50%;
}

// Interactive badge (hoverable)
.badge-telegram-interactive {
  cursor: pointer;
  transition: all 0.2s ease;

  &:hover {
    transform: scale(1.1);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
  }

  &:active {
    transform: scale(0.95);
  }
}

// Premium badge (gradient)
.badge-telegram-premium {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

// Star badge (for favorites)
.badge-telegram-star {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

// =============================================================================
// Responsive Design
// =============================================================================
@media (max-width: 576px) {
  .badge-telegram {
    height: calc($badge-height - 2px);
    min-width: calc($badge-height - 2px);
    font-size: calc($badge-font-size - 1px);
    padding: 0 calc($badge-padding-x - 1px);
  }
}

// =============================================================================
// Dark Theme Support
// =============================================================================
@media (prefers-color-scheme: dark) {
  .badge-telegram {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  }

  .badge-telegram-avatar {
    border-color: var(--bs-dark);
  }
}

// =============================================================================
// Utilities
// =============================================================================
// Hide badge class (for JavaScript manipulation)
.badge-telegram-hidden {
  display: none !important;
}

// Badge with border
.badge-telegram-outlined {
  background: transparent;
  color: var(--bs-danger);
  border: 2px solid var(--bs-danger);
  box-shadow: none;
}