/* ==========================================================================
   Button Component (BEM)
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--button-padding-v) var(--button-padding-h);
  min-height: 44px;
  min-width: 44px;
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid var(--color-white);
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: #ffffff;
  box-shadow: var(--button-shadow);
  transition: opacity var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  touch-action: manipulation;
}

.button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hover effects only for devices with hover */
@media (hover: hover) and (pointer: fine) {
  .button:hover:not(:disabled) {
    box-shadow: var(--button-shadow-hover);
    transform: translateY(-2px) scale(1.02);
  }
}

.button:active:not(:disabled) {
  transform: translateY(0);
}

/* Button variants */
.button--primary {
  background-color: var(--color-primary);
  border: 1px solid var(--color-white);
  color: #ffffff;
}

.button--secondary {
  background-color: var(--color-secondary);
  color: #ffffff;
}

.button--success {
  background-color: var(--color-success);
  color: #ffffff;
}

.button--error {
  background-color: var(--color-error);
  border: 1px solid var(--color-white);
  color: #ffffff;
}

.button--outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

@media (hover: hover) and (pointer: fine) {
  .button--outline:hover:not(:disabled) {
    background-color: var(--color-primary);
    border: 1px solid var(--color-white);
    color: #ffffff;
  }
}

/* Button sizes */
.button--sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.button--lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

/* Button full width */
.button--full {
  width: 100%;
}