/* ============================================
   BUTTONS & INTERACTIVE ELEMENTS
   Grunge Style com Animações Dinâmicas
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left var(--transition-fast);
  z-index: 0;
}

.btn:hover::before {
  left: 100%;
}

.btn-content {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Variações de Botão */

/* Primary - Purple */
.btn-primary {
  background: linear-gradient(135deg, var(--color-purple), #8A1FD1);
  color: var(--color-white);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(160, 32, 240, 0.4);
}

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

/* Secondary - Pink */
.btn-secondary {
  background: linear-gradient(135deg, var(--color-pink), #E600E6);
  color: var(--color-white);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 0, 255, 0.4);
}

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

/* Accent - Yellow */
.btn-accent {
  background: linear-gradient(135deg, var(--color-yellow), #FFB700);
  color: var(--color-dark-gray);
  font-weight: 600;
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
}

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

/* Navy */
.btn-navy {
  background: linear-gradient(135deg, var(--color-navy), #000050);
  color: var(--color-white);
}

.btn-navy:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 128, 0.4);
}

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

/* Outline Style */
.btn-outline {
  background: transparent;
  border: 2px solid currentColor;
  color: var(--color-purple);
  box-shadow: none;
}

.btn-outline:hover {
  background: var(--color-purple);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn-outline.btn-outline-pink {
  color: var(--color-pink);
}

.btn-outline.btn-outline-pink:hover {
  background: var(--color-pink);
}

.btn-outline.btn-outline-navy {
  color: var(--color-navy);
}

.btn-outline.btn-outline-navy:hover {
  background: var(--color-navy);
}

/* Tamanhos */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* Estados */
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

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

/* Icon Button */
.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-purple {
  background: rgba(160, 32, 240, 0.15);
  color: var(--color-purple);
}

.badge-pink {
  background: rgba(255, 0, 255, 0.15);
  color: var(--color-pink);
}

.badge-yellow {
  background: rgba(255, 215, 0, 0.15);
  color: var(--color-yellow);
}

.badge-navy {
  background: rgba(0, 0, 128, 0.15);
  color: var(--color-navy);
}

/* Loading Animation */
.btn-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: var(--spacing-xs);
}

/* Responsivo */
@media (max-width: 480px) {
  .btn {
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
  }

  .btn-lg {
    padding: 0.85rem 1.5rem;
  }
}