/**
 * Button Components
 * 
 * Button styles following BEM methodology
 * 
 * @package wbl
 */

/* ================================================================
   BUTTON BASE STYLES
   ================================================================ */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  border-radius: var(--radius-small);
  transition: all var(--transition-medium);
  user-select: none;
  white-space: nowrap;
  vertical-align: middle;
  transform: translateY(0);
  box-shadow: none;
}

.btn:hover,
.btn:focus {
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-interactive-hover);
}

.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-interactive);
}

.btn:disabled,
.btn--disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ================================================================
   BUTTON VARIANTS
   ================================================================ */

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

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-text-primary);
  border-color: var(--color-text-primary);
  color: var(--color-white);
}

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

.btn--secondary:hover,
.btn--secondary:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* White Button */
.btn--white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--white:hover,
.btn--white:focus {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

/* Success Button */
.btn--success {
  background-color: var(--color-success);
  color: var(--color-white);
  border-color: var(--color-success);
}

.btn--success:hover,
.btn--success:focus {
  background-color: #218838;
  border-color: #218838;
  color: var(--color-white);
}

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

.btn--warning:hover,
.btn--warning:focus {
  background-color: #e0a800;
  border-color: #e0a800;
  color: var(--color-text-primary);
}

/* Error Button */
.btn--error {
  background-color: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
}

.btn--error:hover,
.btn--error:focus {
  background-color: #c82333;
  border-color: #c82333;
  color: var(--color-white);
}

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

.btn--outline:hover,
.btn--outline:focus {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* ================================================================
   BUTTON SIZES
   ================================================================ */

.btn--small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-small);
}

.btn--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-h5);
}

.btn--block {
  display: block;
  width: 100%;
}

/* ================================================================
   BUTTON ICONS
   ================================================================ */

.btn__icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: middle;
  margin-inline-end: 0;
  margin-inline-start: var(--spacing-xs);
}

.btn__icon--right {
  margin-inline-start: 0;
  margin-inline-end: var(--spacing-xs);
}

.btn__icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

/* ================================================================
   BUTTON GROUPS
   ================================================================ */

.btn-group {
  display: inline-flex;
  vertical-align: middle;
}

.btn-group .btn {
  position: relative;
  flex: 1 1 auto;
  border-radius: 0;
  margin-left: -2px;
}

.btn-group .btn:first-child {
  border-top-left-radius: var(--radius-small);
  border-bottom-left-radius: var(--radius-small);
  margin-left: 0;
}

.btn-group .btn:last-child {
  border-top-right-radius: var(--radius-small);
  border-bottom-right-radius: var(--radius-small);
}

.btn-group .btn:hover,
.btn-group .btn:focus {
  z-index: 1;
}

/* ================================================================
   RESPONSIVE BUTTONS
   ================================================================ */

@media (max-width: 767px) {
  .btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-small);
  }
  
  .btn--large {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-body);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn-group .btn {
    margin-left: 0;
    margin-top: -2px;
    border-radius: 0;
  }
  
  .btn-group .btn:first-child {
    border-top-left-radius: var(--radius-small);
    border-top-right-radius: var(--radius-small);
    border-bottom-left-radius: 0;
    margin-top: 0;
  }
  
  .btn-group .btn:last-child {
    border-top-right-radius: 0;
    border-bottom-left-radius: var(--radius-small);
    border-bottom-right-radius: var(--radius-small);
  }
}