/**
 * Button Component Styles
 * Consolidated button styles across all content types
 * Consolidates: button-fix.css + activity-ui.css button sections
 */

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

.btn,
button:not(.nav-button):not(.activity-nav-button) {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-primary);
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast),
              border-color var(--transition-fast),
              color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

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

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

/* ========================================
   PRIMARY BUTTON
   ======================================== */

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

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

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

/* ========================================
   SECONDARY BUTTON
   ======================================== */

.btn-secondary,
.btn-secondary-inline {
  color: var(--color-text);
  background-color: var(--color-background-alt);
  border-color: var(--color-border);
}

.btn-secondary:hover:not(:disabled),
.btn-secondary-inline:hover:not(:disabled) {
  background-color: var(--color-border);
  border-color: var(--color-border-dark);
}

.btn-secondary:active:not(:disabled),
.btn-secondary-inline:active:not(:disabled) {
  background-color: var(--color-border-dark);
}

/* Inline variant (smaller, used in tight spaces) */
.btn-secondary-inline {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

/* ========================================
   SUCCESS BUTTON
   ======================================== */

.btn-success {
  color: white;
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.btn-success:hover:not(:disabled) {
  background-color: var(--color-success-dark);
  border-color: var(--color-success-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

/* ========================================
   DANGER BUTTON
   ======================================== */

.btn-danger {
  color: white;
  background-color: var(--color-danger);
  border-color: var(--color-danger);
}

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

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

/* ========================================
   WARNING BUTTON
   ======================================== */

.btn-warning {
  color: var(--color-text);
  background-color: var(--color-warning);
  border-color: var(--color-warning);
}

.btn-warning:hover:not(:disabled) {
  background-color: var(--color-warning-dark);
  border-color: var(--color-warning-dark);
}

/* ========================================
   INFO BUTTON
   ======================================== */

.btn-info {
  color: white;
  background-color: var(--color-info);
  border-color: var(--color-info);
}

.btn-info:hover:not(:disabled) {
  background-color: var(--color-info-dark);
  border-color: var(--color-info-dark);
}

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

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

.btn-outline-primary:hover:not(:disabled) {
  color: white;
  background-color: var(--color-primary);
}

.btn-outline-secondary {
  color: var(--color-text);
  background-color: transparent;
  border-color: var(--color-border-dark);
}

.btn-outline-secondary:hover:not(:disabled) {
  background-color: var(--color-background-alt);
}

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

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 0.8rem 2rem;
  font-size: var(--font-size-lg);
}

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

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

.btn-group {
  display: inline-flex;
  gap: var(--spacing-xs);
}

.btn-group .btn {
  border-radius: 0;
}

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

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

.btn-group-vertical {
  display: inline-flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.btn-group-vertical .btn {
  width: 100%;
  border-radius: 0;
}

.btn-group-vertical .btn:first-child {
  border-top-left-radius: var(--radius-sm);
  border-top-right-radius: var(--radius-sm);
}

.btn-group-vertical .btn:last-child {
  border-bottom-left-radius: var(--radius-sm);
  border-bottom-right-radius: var(--radius-sm);
}

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

.btn-icon {
  padding: 0.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
}

.btn-icon svg,
.btn-icon img {
  width: 1.25rem;
  height: 1.25rem;
}

/* Button with icon and text */
.btn-with-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.btn-with-icon svg,
.btn-with-icon img {
  width: 1rem;
  height: 1rem;
}

/* ========================================
   LOADING STATE
   ======================================== */

.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 1rem;
  height: 1rem;
  top: 50%;
  left: 50%;
  margin-left: -0.5rem;
  margin-top: -0.5rem;
  border: 2px solid white;
  border-radius: 50%;
  border-top-color: transparent;
  animation: button-spin 0.6s linear infinite;
}

@keyframes button-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   SPECIAL BUTTON FIXES
   ======================================== */

/* Submit button styling */
.submit-button,
#submit-btn,
#save-btn {
  min-width: 150px;
}

/* Reset button styling */
.reset-button,
#reset-btn {
  margin-left: var(--spacing-sm);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  .btn-group {
    flex-direction: column;
    width: 100%;
  }

  .btn-group .btn {
    width: 100%;
    border-radius: 0;
  }

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

  .btn-group .btn:last-child {
    border-top-right-radius: 0;
    border-bottom-left-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
  }
}

@media (max-width: 480px) {
  .btn {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
  }

  .btn-lg {
    padding: 0.7rem 1.5rem;
    font-size: var(--font-size-md);
  }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .btn,
  button {
    display: none;
  }

  .btn-group,
  .btn-group-vertical {
    display: none;
  }
}

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

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

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 2px;
  }
}

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

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