/* ===== COMPONENTE BOTÃO ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 0;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-primary);
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  border: none;
  outline: none;
  box-shadow: none;
}

.btn:focus {
  outline: none !important;
}

.btn:active {
  outline: none !important;
}

/* ===== VARIANTES ===== */

.btn--primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary img {
  filter: brightness(0) invert(1);
}

.btn--primary:hover img {
  filter: brightness(0) invert(1);
}

.btn--primary.dropdown-open img {
  filter: brightness(0) saturate(100%) invert(16%) sepia(96%) saturate(2731%) hue-rotate(228deg) brightness(92%) contrast(104%);
}

.btn--secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--gray-lighter);
}

.btn--secondary:hover {
  background-color: var(--background-secondary);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn--text {
  background: transparent !important;
  color: var(--gray-color) !important;
  border: none !important;
  padding: 0 !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  outline: none !important;
  text-decoration: none !important;
  transform: none !important;
  transition: color var(--transition-fast) !important;
}

.btn--text:hover {
  background: transparent !important;
  border: none !important;
  color: var(--primary-color) !important;
  box-shadow: none !important;
  outline: none !important;
  text-decoration: none !important;
  transform: none !important;
}

/* Ícones do botão text também ficam azuis no hover */
.btn--text:hover img {
  filter: brightness(0) saturate(100%) invert(16%) sepia(96%) saturate(2731%) hue-rotate(228deg) brightness(92%) contrast(104%);
}

/* Espaçamento entre texto e ícone no botão text */
.btn--text img {
  margin-left: var(--spacing-xs);
}

.btn--text:focus {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
  background: transparent !important;
}

.btn--text:active {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
  background: transparent !important;
  transform: none !important;
}

.btn--small {
  padding: 6px var(--spacing-md);
  font-size: 12px;
}

.btn--large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: 16px;
}

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

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--loading {
  position: relative;
  color: transparent;
}

.btn--loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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