/**
 * StrongBody Button Components
 * Modern, accessible button styles based on design system
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@500;600;700&display=swap');

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-7);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

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

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

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

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary-500);
  color: var(--color-white);
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-button);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-600);
  border-color: var(--color-primary-600);
  transform: translateY(-1px);
  box-shadow: var(--shadow-button-hover);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-button-active);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-green-seller-600);
  color: var(--color-white);
  border-color: var(--color-green-seller-600);
  box-shadow: var(--shadow-button);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-green-seller-800);
  border-color: var(--color-green-seller-800);
  transform: translateY(-1px);
  box-shadow: var(--shadow-button-hover);
}

.btn-secondary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-button-active);
}

/* Outline Button */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border-primary);
  box-shadow: none;
}

.btn-outline:hover:not(:disabled) {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border-hover);
  color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-outline:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: none;
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: transparent;
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-bg-secondary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-ghost:active:not(:disabled) {
  transform: translateY(0);
  background-color: var(--color-gray-100);
}

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

.btn-success:hover:not(:disabled) {
  background-color: var(--color-green-seller-800);
  border-color: var(--color-green-seller-800);
  transform: translateY(-1px);
  box-shadow: var(--shadow-button-hover);
}

/* Danger Button */
.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
  box-shadow: var(--shadow-button);
}

.btn-danger:hover:not(:disabled) {
  background-color: #dc2626;
  border-color: #dc2626;
  transform: translateY(-1px);
  box-shadow: var(--shadow-button-hover);
}

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

/* Small Button */
.btn-sm {
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-sm);
  border-radius: var(--radius-sm);
}

/* Large Button */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
}

/* Extra Large Button */
.btn-xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
}

/* ===== BUTTON WIDTHS ===== */

.btn-full {
  width: 100%;
}

.btn-auto {
  width: auto;
}

/* ===== BUTTON STATES ===== */

/* Loading State */
.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  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); }
}

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

.btn-group {
  display: inline-flex;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.btn-group .btn {
  border-radius: 0;
  border-right-width: 1px;
  border-right-color: var(--color-border-primary);
  margin: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  border-right: none;
}

.btn-group .btn:only-child {
  border-radius: var(--radius-md);
  border-right: 2px solid transparent;
}

/* ===== ICON BUTTONS ===== */

.btn-icon {
  padding: var(--space-3);
  aspect-ratio: 1;
}

.btn-icon-sm {
  padding: var(--space-2);
  font-size: var(--text-sm);
}

.btn-icon-lg {
  padding: var(--space-4);
  font-size: var(--text-lg);
}

/* ===== FLOATING ACTION BUTTON ===== */

.btn-fab {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  padding: 0;
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-xl);
  background-color: var(--color-primary-500);
  color: var(--color-white);
  border: none;
  font-size: 24px;
  transition: all var(--transition-normal);
}

.btn-fab:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-2xl);
  background-color: var(--color-primary-600);
}

.btn-fab:active {
  transform: scale(0.95);
}

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

@media (max-width: 640px) {
  .btn {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
  }

  .btn-sm {
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
  }

  .btn-lg {
    padding: var(--space-5) var(--space-9);
    font-size: var(--text-lg);
  }

  .btn-xl {
    padding: var(--space-6) var(--space-10);
    font-size: var(--text-xl);
  }

  .btn-fab {
    bottom: var(--space-6);
    right: var(--space-6);
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
}

/* ===== ACCESSIBILITY ===== */

@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }

  .btn:hover {
    transform: none;
  }

  .btn-loading::after {
    animation: none;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .btn {
    border-width: 3px;
  }

  .btn-ghost {
    border-color: var(--color-text-primary);
  }
}

/* ===== UTILITY CLASSES ===== */

/* Legacy support */
.button,
input[type="submit"],
input[type="button"],
input[type="reset"] {
  @extend .btn;
  @extend .btn-primary;
}

/* WordPress admin compatibility */
.wp-admin .btn {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}