/* ========================================
   ANIMATIONS & UTILS - Checkout Ninja
   Animações, estados de loading e utilitários
======================================== */

/* ========================================
   ANIMAÇÕES
======================================== */
@keyframes slideDown {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes checkIn {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes spin {
  0% { 
    transform: translateY(-50%) rotate(0deg); 
  }
  100% { 
    transform: translateY(-50%) rotate(360deg); 
  }
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* ========================================
   ESTADOS DE LOADING
======================================== */
.btn-avancar.loading,
.email-submit-btn.loading,
.btn-finalizar-compra.loading,
.btn-aplicar-cupom.loading {
  opacity: 0.8;
  cursor: not-allowed;
  position: relative;
}

.btn-avancar.loading::after,
.email-submit-btn.loading::after,
.btn-finalizar-compra.loading::after,
.btn-aplicar-cupom.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: var(--border-radius-full);
  animation: spin 1s linear infinite;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
}

/* Animação shimmer para loading de frete */
.loading-frete::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 1.5s infinite;
}

/* Animação para check dos steps completados */
.secao-header.completed .numero-secao::before {
  content: '✓';
  font-size: 0.9rem;
  font-weight: 900;
  animation: checkIn 0.3s ease;
}

/* ========================================
   TOAST NOTIFICATIONS
======================================== */
.checkout-toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--color-success);
  color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius-md);
  font-weight: 600;
  z-index: var(--z-toast);
  transform: translateX(100%);
  transition: var(--transition-normal);
  box-shadow: var(--shadow-lg);
  font-family: 'Inter', sans-serif;
  max-width: 350px;
  font-size: 0.9rem;
  line-height: 1.4;
}

.checkout-toast.toast-error {
  background: var(--color-error);
}

.checkout-toast.toast-info {
  background: #6366f1;
}

.checkout-toast.show {
  transform: translateX(0);
}

/* ========================================
   UTILITÁRIOS
======================================== */

/* Classes para warnings */
.btn-warning {
  color: var(--color-warning);
  font-weight: 700;
  margin-right: var(--spacing-sm);
}

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

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

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

/* Classes para espaçamento */
.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); }

.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); }

/* Classes para cores */
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }
.text-warning { color: var(--color-warning); }
.text-gray { color: var(--color-gray-500); }

.bg-primary { background-color: var(--color-primary); }
.bg-success { background-color: var(--color-success); }
.bg-error { background-color: var(--color-error); }
.bg-warning { background-color: var(--color-warning); }
.bg-gray { background-color: var(--color-gray-50); }

/* Classes para exibição */
.hidden { display: none !important; }
.visible { display: block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }

/* Classes para flex */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-start {
  display: flex;
  align-items: flex-start;
}

.flex-end {
  display: flex;
  align-items: flex-end;
}

/* Classes para bordas */
.border { border: 1px solid var(--color-gray-200); }
.border-primary { border-color: var(--color-primary); }
.border-success { border-color: var(--color-success); }
.border-error { border-color: var(--color-error); }

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

/* Classes para sombras */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Classes para transições */
.transition { transition: var(--transition-fast); }
.transition-normal { transition: var(--transition-normal); }
.transition-slow { transition: var(--transition-slow); }

/* Classes para overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-hidden { overflow-x: hidden; }
.overflow-y-auto { overflow-y: auto; }

/* Classes para position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Classes para z-index */
.z-0 { z-index: 0; }
.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* Classes para cursor */
.cursor-pointer { cursor: pointer; }
.cursor-not-allowed { cursor: not-allowed; }

/* Classes para user-select */
.select-none { user-select: none; }
.select-all { user-select: all; }

/* Classes para font-weight */
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Classes para font-size */
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

/* ========================================
   ESTADOS ESPECIAIS
======================================== */

/* Estado de carregamento com pulsação */
.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: .5;
  }
}

/* Estado de bounce para chamar atenção */
.bounce {
  animation: bounce 1s infinite;
}

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
    transform: translate3d(0,0,0);
  }
  40%, 43% {
    animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
    transform: translate3d(0, -30px, 0);
  }
  70% {
    animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0,-4px,0);
  }
}