/* =================================================================
   DESIGN SYSTEM FINETIPS — Botões
   Arquivo: buttons.css
   Descrição: Estilos de botões com 3 variantes (primary, secondary,
              tertiary) e botões com ícone.
   ================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 28px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.btn:active {
  transform: scale(0.97);
}

/* ---- Primary Button ---- */
.btn-primary {
  background-color: var(--primary-color);
  color: var(--text-on-primary);
  border-color: var(--primary-color);
}

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

.btn-primary:active {
  background-color: var(--primary-pressed);
  border-color: var(--primary-pressed);
}

.btn-primary:disabled,
.btn-primary.is-disabled {
  background-color: var(--disabled-bg);
  color: var(--disabled-text);
  border-color: var(--disabled-border);
  cursor: not-allowed;
  pointer-events: none;
}

/* ---- Secondary Button ---- */
.btn-secondary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

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

.btn-secondary:active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: var(--text-on-primary);
}

.btn-secondary:disabled,
.btn-secondary.is-disabled {
  background-color: transparent;
  color: var(--disabled-text);
  border-color: var(--disabled-border);
  cursor: not-allowed;
  pointer-events: none;
}

body.dark-mode .btn-secondary {
  color: #FFFFFF;
}

body.dark-mode .btn-secondary:disabled,
body.dark-mode .btn-secondary.is-disabled {
  color: var(--disabled-text);
}

body.dark-mode .btn-secondary:hover {
  color: #FFFFFF;
}

/* ---- Tertiary Button ---- */
.btn-tertiary {
  background-color: transparent;
  color: var(--primary-color);
  border-color: transparent;
  padding: 10px 16px;
}

.btn-tertiary:hover {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

body.dark-mode .btn-tertiary:hover {
  background-color: rgba(255, 93, 0, 0.3);
  color: #FFFFFF;
}

.btn-tertiary:active {
  background-color: var(--primary-color);
  color: var(--text-on-primary);
}

.btn-tertiary:disabled,
.btn-tertiary.is-disabled {
  background-color: transparent;
  color: var(--disabled-text);
  border-color: transparent;
  cursor: not-allowed;
  pointer-events: none;
}

/* ---- Icon Buttons ---- */
.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  font-weight: 400;
}

.btn-icon.btn-primary {
  border-radius: var(--radius-md);
}

.btn-icon.btn-secondary {
  border-radius: var(--radius-md);
}

.btn-icon.btn-tertiary {
  border-radius: var(--radius-md);
}

/* Alvo de toque mínimo no mobile (WCAG/HIG ≥ 44px) */
@media (max-width: 768px) {
  .btn {
    min-height: 44px;
  }
}