/**
 * PLG Design System - #CancelaOVape
 * Ultra-modern SaaS design system for Product-Led Growth
 * Version: 2.0.0
 */

/* =============================================================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================================================= */

:root {
  /* Brand Colors */
  --plg-primary: #10b981;
  --plg-primary-light: #34d399;
  --plg-primary-dark: #059669;
  --plg-primary-glow: rgba(16, 185, 129, 0.4);

  /* Accent Colors */
  --plg-accent: #06b6d4;
  --plg-accent-light: #22d3ee;
  --plg-accent-glow: rgba(6, 182, 212, 0.4);

  /* Semantic Colors */
  --plg-success: #22c55e;
  --plg-warning: #f59e0b;
  --plg-danger: #ef4444;
  --plg-info: #3b82f6;

  /* Neutral Palette - Light Mode */
  --plg-bg-primary: #ffffff;
  --plg-bg-secondary: #f8fafc;
  --plg-bg-tertiary: #f1f5f9;
  --plg-bg-elevated: #ffffff;
  --plg-border: rgba(0, 0, 0, 0.08);
  --plg-border-strong: rgba(0, 0, 0, 0.12);
  --plg-text-primary: #0f172a;
  --plg-text-secondary: #475569;
  --plg-text-tertiary: #94a3b8;
  --plg-text-muted: #cbd5e1;

  /* Glass Effect */
  --plg-glass-bg: rgba(255, 255, 255, 0.7);
  --plg-glass-border: rgba(255, 255, 255, 0.3);
  --plg-glass-blur: 12px;

  /* Shadows */
  --plg-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --plg-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --plg-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --plg-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --plg-shadow-glow: 0 0 40px var(--plg-primary-glow);
  --plg-shadow-glow-accent: 0 0 40px var(--plg-accent-glow);

  /* Gradients */
  --plg-gradient-primary: linear-gradient(135deg, var(--plg-primary) 0%, var(--plg-accent) 100%);
  --plg-gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  --plg-gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);
  --plg-gradient-mesh: radial-gradient(at 40% 20%, hsla(160, 84%, 39%, 0.15) 0px, transparent 50%),
                       radial-gradient(at 80% 0%, hsla(189, 94%, 43%, 0.1) 0px, transparent 50%),
                       radial-gradient(at 0% 50%, hsla(355, 85%, 63%, 0.05) 0px, transparent 50%);

  /* Typography */
  --plg-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --plg-font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Spacing Scale */
  --plg-space-xs: 0.25rem;
  --plg-space-sm: 0.5rem;
  --plg-space-md: 1rem;
  --plg-space-lg: 1.5rem;
  --plg-space-xl: 2rem;
  --plg-space-2xl: 3rem;
  --plg-space-3xl: 4rem;

  /* Border Radius */
  --plg-radius-sm: 0.5rem;
  --plg-radius-md: 0.75rem;
  --plg-radius-lg: 1rem;
  --plg-radius-xl: 1.5rem;
  --plg-radius-2xl: 2rem;
  --plg-radius-full: 9999px;

  /* Transitions */
  --plg-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --plg-transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --plg-transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --plg-transition-spring: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Dark Mode Tokens */
.dark, [data-theme="dark"] {
  --plg-bg-primary: #0f172a;
  --plg-bg-secondary: #1e293b;
  --plg-bg-tertiary: #334155;
  --plg-bg-elevated: #1e293b;
  --plg-border: rgba(255, 255, 255, 0.08);
  --plg-border-strong: rgba(255, 255, 255, 0.12);
  --plg-text-primary: #f8fafc;
  --plg-text-secondary: #cbd5e1;
  --plg-text-tertiary: #94a3b8;
  --plg-text-muted: #64748b;

  --plg-glass-bg: rgba(15, 23, 42, 0.8);
  --plg-glass-border: rgba(255, 255, 255, 0.1);

  --plg-gradient-card: linear-gradient(145deg, rgba(30,41,59,0.9) 0%, rgba(30,41,59,0.6) 100%);
}

/* =============================================================================
   BASE STYLES
   ============================================================================= */

.plg-body {
  font-family: var(--plg-font-sans);
  background: var(--plg-bg-secondary);
  color: var(--plg-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =============================================================================
   GLASS MORPHISM COMPONENTS
   ============================================================================= */

.plg-glass {
  background: var(--plg-glass-bg);
  backdrop-filter: blur(var(--plg-glass-blur));
  -webkit-backdrop-filter: blur(var(--plg-glass-blur));
  border: 1px solid var(--plg-glass-border);
}

.plg-glass-strong {
  background: var(--plg-glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--plg-glass-border);
}

/* =============================================================================
   CARD COMPONENTS
   ============================================================================= */

.plg-card {
  background: var(--plg-bg-elevated);
  border-radius: var(--plg-radius-xl);
  border: 1px solid var(--plg-border);
  padding: var(--plg-space-lg);
  transition: all var(--plg-transition-normal);
}

.plg-card:hover {
  border-color: var(--plg-border-strong);
  box-shadow: var(--plg-shadow-lg);
  transform: translateY(-2px);
}

.plg-card-interactive {
  cursor: pointer;
}

.plg-card-interactive:hover {
  transform: translateY(-4px);
}

.plg-card-gradient {
  background: var(--plg-gradient-primary);
  color: white;
  border: none;
}

.plg-card-glow {
  box-shadow: var(--plg-shadow-glow);
}

/* Bento Grid Cards */
.plg-bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--plg-space-md);
}

.plg-bento-card {
  background: var(--plg-gradient-card);
  backdrop-filter: blur(var(--plg-glass-blur));
  border: 1px solid var(--plg-border);
  border-radius: var(--plg-radius-xl);
  padding: var(--plg-space-xl);
  transition: all var(--plg-transition-normal);
  position: relative;
  overflow: hidden;
}

.plg-bento-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--plg-gradient-mesh);
  opacity: 0;
  transition: opacity var(--plg-transition-normal);
}

.plg-bento-card:hover::before {
  opacity: 1;
}

.plg-bento-card:hover {
  border-color: var(--plg-primary);
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--plg-shadow-xl);
}

/* =============================================================================
   BUTTON COMPONENTS
   ============================================================================= */

.plg-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--plg-space-sm);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--plg-radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--plg-transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.plg-btn:focus {
  outline: 2px solid var(--plg-primary);
  outline-offset: 2px;
}

.plg-btn-primary {
  background: var(--plg-gradient-primary);
  color: white;
  box-shadow: 0 4px 14px 0 var(--plg-primary-glow);
}

.plg-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px 0 var(--plg-primary-glow);
}

.plg-btn-primary:active {
  transform: translateY(0);
}

.plg-btn-secondary {
  background: var(--plg-bg-tertiary);
  color: var(--plg-text-primary);
  border: 1px solid var(--plg-border);
}

.plg-btn-secondary:hover {
  background: var(--plg-bg-secondary);
  border-color: var(--plg-border-strong);
}

.plg-btn-ghost {
  background: transparent;
  color: var(--plg-text-secondary);
}

.plg-btn-ghost:hover {
  background: var(--plg-bg-tertiary);
  color: var(--plg-text-primary);
}

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

.plg-btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.plg-btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--plg-radius-full);
}

/* =============================================================================
   METRIC CARDS (PLG Value Display)
   ============================================================================= */

.plg-metric-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--plg-space-lg);
  background: var(--plg-bg-elevated);
  border-radius: var(--plg-radius-xl);
  border: 1px solid var(--plg-border);
  text-align: center;
  transition: all var(--plg-transition-normal);
}

.plg-metric-card:hover {
  border-color: var(--plg-primary);
  box-shadow: var(--plg-shadow-glow);
}

.plg-metric-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--plg-radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--plg-space-sm);
}

.plg-metric-value {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  background: var(--plg-gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.plg-metric-label {
  font-size: 0.75rem;
  color: var(--plg-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--plg-space-xs);
}

.plg-metric-trend {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  font-weight: 500;
  margin-top: var(--plg-space-sm);
  padding: 0.25rem 0.5rem;
  border-radius: var(--plg-radius-full);
}

.plg-metric-trend-up {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.plg-metric-trend-down {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

/* =============================================================================
   PROGRESS COMPONENTS
   ============================================================================= */

.plg-progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.plg-progress-ring-bg {
  fill: none;
  stroke: var(--plg-bg-tertiary);
}

.plg-progress-ring-fill {
  fill: none;
  stroke: url(#plg-gradient);
  stroke-linecap: round;
  transition: stroke-dashoffset var(--plg-transition-slow);
}

.plg-progress-bar {
  height: 0.5rem;
  background: var(--plg-bg-tertiary);
  border-radius: var(--plg-radius-full);
  overflow: hidden;
}

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

.plg-progress-bar-animated .plg-progress-bar-fill {
  animation: plg-shimmer 2s infinite;
  background-size: 200% 100%;
  background-image: linear-gradient(
    90deg,
    var(--plg-primary) 0%,
    var(--plg-accent) 50%,
    var(--plg-primary) 100%
  );
}

/* =============================================================================
   BADGE COMPONENTS
   ============================================================================= */

.plg-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--plg-radius-full);
  background: var(--plg-bg-tertiary);
  color: var(--plg-text-secondary);
}

.plg-badge-primary {
  background: rgba(16, 185, 129, 0.1);
  color: var(--plg-primary);
}

.plg-badge-success {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.plg-badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.plg-badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.plg-badge-glow {
  box-shadow: 0 0 12px var(--plg-primary-glow);
  animation: plg-pulse-glow 2s ease-in-out infinite;
}

/* Live Badge */
.plg-badge-live {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.plg-badge-live::before {
  content: '';
  width: 0.5rem;
  height: 0.5rem;
  background: #ef4444;
  border-radius: 50%;
  animation: plg-pulse 1.5s ease-in-out infinite;
}

/* =============================================================================
   STREAK & GAMIFICATION
   ============================================================================= */

.plg-streak {
  display: inline-flex;
  align-items: center;
  gap: var(--plg-space-sm);
  padding: var(--plg-space-sm) var(--plg-space-md);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(239, 68, 68, 0.1) 100%);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--plg-radius-full);
}

.plg-streak-fire {
  font-size: 1.5rem;
  animation: plg-fire 1s ease-in-out infinite;
}

.plg-streak-count {
  font-size: 1.25rem;
  font-weight: 800;
  color: #f59e0b;
}

.plg-streak-label {
  font-size: 0.75rem;
  color: var(--plg-text-tertiary);
}

/* Level Badge */
.plg-level {
  display: inline-flex;
  align-items: center;
  gap: var(--plg-space-xs);
  padding: var(--plg-space-xs) var(--plg-space-md);
  background: var(--plg-gradient-primary);
  border-radius: var(--plg-radius-full);
  color: white;
  font-weight: 700;
  font-size: 0.875rem;
  box-shadow: 0 4px 12px var(--plg-primary-glow);
}

/* XP Counter */
.plg-xp {
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--plg-primary);
}

/* =============================================================================
   ACHIEVEMENT COMPONENTS
   ============================================================================= */

.plg-achievement {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--plg-space-lg);
  background: var(--plg-bg-elevated);
  border-radius: var(--plg-radius-xl);
  border: 1px solid var(--plg-border);
  text-align: center;
  transition: all var(--plg-transition-normal);
  position: relative;
}

.plg-achievement-icon {
  width: 4rem;
  height: 4rem;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--plg-bg-tertiary);
  border-radius: var(--plg-radius-xl);
  margin-bottom: var(--plg-space-sm);
}

.plg-achievement-locked {
  filter: grayscale(100%);
  opacity: 0.5;
}

.plg-achievement-unlocked .plg-achievement-icon {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%);
  animation: plg-glow-pulse 2s ease-in-out infinite;
}

.plg-achievement-new {
  position: absolute;
  top: -0.5rem;
  right: -0.5rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--plg-danger);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
  color: white;
  font-weight: 700;
  animation: plg-bounce 1s ease-in-out infinite;
}

/* =============================================================================
   HERO SECTION (Landing Page)
   ============================================================================= */

.plg-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.plg-hero-bg {
  position: absolute;
  inset: 0;
  background: var(--plg-gradient-dark);
}

.plg-hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--plg-gradient-mesh);
  animation: plg-mesh-move 20s ease-in-out infinite;
}

.plg-hero-glow {
  position: absolute;
  width: 40rem;
  height: 40rem;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  pointer-events: none;
}

.plg-hero-glow-primary {
  background: var(--plg-primary);
  top: -20%;
  left: -10%;
  animation: plg-float 8s ease-in-out infinite;
}

.plg-hero-glow-accent {
  background: var(--plg-accent);
  bottom: -20%;
  right: -10%;
  animation: plg-float 10s ease-in-out infinite reverse;
}

/* =============================================================================
   SOCIAL PROOF
   ============================================================================= */

.plg-social-proof {
  display: flex;
  align-items: center;
  gap: var(--plg-space-md);
}

.plg-avatars {
  display: flex;
}

.plg-avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  border: 2px solid var(--plg-bg-primary);
  margin-left: -0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.875rem;
  color: white;
}

.plg-avatar:first-child {
  margin-left: 0;
}

.plg-avatar-more {
  background: var(--plg-bg-tertiary);
  color: var(--plg-text-secondary);
  font-size: 0.75rem;
}

/* =============================================================================
   FLOATING NAV
   ============================================================================= */

.plg-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  padding: var(--plg-space-md);
  transition: all var(--plg-transition-normal);
}

.plg-nav-scrolled {
  background: var(--plg-glass-bg);
  backdrop-filter: blur(var(--plg-glass-blur));
  border-bottom: 1px solid var(--plg-glass-border);
}

.plg-nav-inner {
  max-width: 72rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--plg-space-sm) var(--plg-space-md);
  border-radius: var(--plg-radius-2xl);
}

/* =============================================================================
   BOTTOM NAV (Mobile)
   ============================================================================= */

.plg-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--plg-glass-bg);
  backdrop-filter: blur(var(--plg-glass-blur));
  border-top: 1px solid var(--plg-border);
  padding: var(--plg-space-sm) 0;
  padding-bottom: calc(var(--plg-space-sm) + env(safe-area-inset-bottom));
}

.plg-bottom-nav-inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--plg-space-xs);
  max-width: 32rem;
  margin: 0 auto;
  padding: 0 var(--plg-space-sm);
}

.plg-bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--plg-space-sm);
  border-radius: var(--plg-radius-lg);
  color: var(--plg-text-tertiary);
  text-decoration: none;
  transition: all var(--plg-transition-fast);
}

.plg-bottom-nav-item:hover,
.plg-bottom-nav-item.active {
  color: var(--plg-primary);
  background: rgba(16, 185, 129, 0.1);
}

.plg-bottom-nav-item svg {
  width: 1.5rem;
  height: 1.5rem;
}

.plg-bottom-nav-item span {
  font-size: 0.625rem;
  margin-top: 0.25rem;
  font-weight: 500;
}

/* Center Action Button */
.plg-bottom-nav-action {
  position: relative;
  top: -1rem;
}

.plg-bottom-nav-action-btn {
  width: 3.5rem;
  height: 3.5rem;
  background: var(--plg-gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 4px 20px var(--plg-primary-glow);
  transition: all var(--plg-transition-fast);
}

.plg-bottom-nav-action-btn:hover {
  transform: scale(1.1);
}

.plg-bottom-nav-action-btn:active {
  transform: scale(0.95);
}

/* =============================================================================
   ONBOARDING STEPPER
   ============================================================================= */

.plg-stepper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--plg-space-sm);
}

.plg-stepper-step {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--plg-bg-tertiary);
  transition: all var(--plg-transition-normal);
}

.plg-stepper-step.active {
  width: 2rem;
  background: var(--plg-gradient-primary);
  border-radius: var(--plg-radius-full);
}

.plg-stepper-step.completed {
  background: var(--plg-primary);
}

/* =============================================================================
   INPUT COMPONENTS
   ============================================================================= */

.plg-input {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-size: 1rem;
  border-radius: var(--plg-radius-xl);
  border: 1px solid var(--plg-border);
  background: var(--plg-bg-elevated);
  color: var(--plg-text-primary);
  transition: all var(--plg-transition-fast);
}

.plg-input::placeholder {
  color: var(--plg-text-tertiary);
}

.plg-input:focus {
  outline: none;
  border-color: var(--plg-primary);
  box-shadow: 0 0 0 4px var(--plg-primary-glow);
}

.plg-input-glass {
  background: var(--plg-glass-bg);
  backdrop-filter: blur(var(--plg-glass-blur));
  border-color: var(--plg-glass-border);
}

/* =============================================================================
   TOAST NOTIFICATIONS
   ============================================================================= */

.plg-toast {
  position: fixed;
  bottom: 6rem;
  left: 50%;
  transform: translateX(-50%) translateY(100%);
  padding: 0.75rem 1.5rem;
  background: var(--plg-bg-elevated);
  border: 1px solid var(--plg-border);
  border-radius: var(--plg-radius-full);
  box-shadow: var(--plg-shadow-xl);
  display: flex;
  align-items: center;
  gap: var(--plg-space-sm);
  font-weight: 500;
  opacity: 0;
  transition: all var(--plg-transition-spring);
  z-index: 100;
}

.plg-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.plg-toast-success {
  border-color: var(--plg-success);
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, var(--plg-bg-elevated) 100%);
}

.plg-toast-xp {
  border-color: var(--plg-primary);
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, var(--plg-bg-elevated) 100%);
}

/* =============================================================================
   ANIMATIONS
   ============================================================================= */

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

@keyframes plg-pulse-glow {
  0%, 100% { box-shadow: 0 0 5px var(--plg-primary-glow); }
  50% { box-shadow: 0 0 20px var(--plg-primary-glow), 0 0 40px var(--plg-primary-glow); }
}

@keyframes plg-glow-pulse {
  0%, 100% { box-shadow: inset 0 0 10px rgba(16, 185, 129, 0.2); }
  50% { box-shadow: inset 0 0 20px rgba(16, 185, 129, 0.4); }
}

@keyframes plg-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes plg-float {
  0%, 100% { transform: translateY(0) translateX(0); }
  33% { transform: translateY(-20px) translateX(10px); }
  66% { transform: translateY(10px) translateX(-10px); }
}

@keyframes plg-fire {
  0%, 100% { transform: scale(1) rotate(-3deg); }
  25% { transform: scale(1.1) rotate(3deg); }
  50% { transform: scale(1) rotate(-3deg); }
  75% { transform: scale(1.1) rotate(3deg); }
}

@keyframes plg-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@keyframes plg-mesh-move {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(2%, 2%); }
  66% { transform: translate(-2%, 1%); }
}

@keyframes plg-confetti {
  0% { transform: translateY(-100vh) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

@keyframes plg-celebrate {
  0% { transform: scale(0) rotate(-180deg); opacity: 0; }
  50% { transform: scale(1.2) rotate(10deg); }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}

@keyframes plg-number-increment {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(-100%); opacity: 0; }
  51% { transform: translateY(100%); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes plg-ring-progress {
  from { stroke-dashoffset: var(--ring-circumference); }
}

/* Utility Animations */
.plg-animate-fade-in {
  animation: plg-fade-in 0.5s ease-out forwards;
}

.plg-animate-slide-up {
  animation: plg-slide-up 0.5s ease-out forwards;
}

.plg-animate-scale-in {
  animation: plg-scale-in 0.3s var(--plg-transition-spring) forwards;
}

.plg-animate-celebrate {
  animation: plg-celebrate 0.6s var(--plg-transition-spring) forwards;
}

@keyframes plg-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes plg-scale-in {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* Stagger Children */
.plg-stagger > * {
  opacity: 0;
  animation: plg-slide-up 0.4s ease-out forwards;
}

.plg-stagger > *:nth-child(1) { animation-delay: 0.05s; }
.plg-stagger > *:nth-child(2) { animation-delay: 0.1s; }
.plg-stagger > *:nth-child(3) { animation-delay: 0.15s; }
.plg-stagger > *:nth-child(4) { animation-delay: 0.2s; }
.plg-stagger > *:nth-child(5) { animation-delay: 0.25s; }
.plg-stagger > *:nth-child(6) { animation-delay: 0.3s; }
.plg-stagger > *:nth-child(7) { animation-delay: 0.35s; }
.plg-stagger > *:nth-child(8) { animation-delay: 0.4s; }

/* =============================================================================
   RESPONSIVE UTILITIES
   ============================================================================= */

@media (max-width: 640px) {
  .plg-hide-mobile { display: none !important; }
}

@media (min-width: 641px) {
  .plg-hide-desktop { display: none !important; }
}

/* Safe Area Padding */
.plg-safe-bottom {
  padding-bottom: env(safe-area-inset-bottom);
}

.plg-safe-top {
  padding-top: env(safe-area-inset-top);
}

/* =============================================================================
   REDUCED MOTION
   ============================================================================= */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}