/* Card Collapsible Component */
/* Extends the base card component with collapsible functionality */

/* Component-specific custom properties */
.c-card-collapsible {
  /* Base properties inherited from card */
  --c-card-collapsible-background: var(--ds-color-surface);
  --c-card-collapsible-border-color: var(--ds-color-border);
  --c-card-collapsible-border-width: 1px;
  --c-card-collapsible-border-radius: var(--ds-radius-m);
  --c-card-collapsible-shadow: var(--ds-shadow-card);
  --c-card-collapsible-transition: all var(--ds-duration-normal) var(--ds-ease-out);
  
  /* Header */
  --c-card-collapsible-header-background: transparent;
  --c-card-collapsible-header-background-hover: var(--ds-color-surface-raised);
  --c-card-collapsible-header-background-active: var(--ds-color-surface-lowered);
  --c-card-collapsible-header-border-color: var(--ds-color-border);
  --c-card-collapsible-header-padding: var(--ds-space-l);
  --c-card-collapsible-header-gap: var(--ds-space-m);
  
  /* Toggle button */
  --c-card-collapsible-toggle-background: transparent;
  --c-card-collapsible-toggle-border: none;
  --c-card-collapsible-toggle-padding: 0;
  --c-card-collapsible-toggle-font-size: var(--ds-font-size-l);
  --c-card-collapsible-toggle-font-weight: var(--ds-font-weight-medium);
  --c-card-collapsible-toggle-text-color: var(--ds-color-text);
  --c-card-collapsible-toggle-text-color-disabled: var(--ds-color-text-weakest);
  --c-card-collapsible-toggle-cursor: pointer;
  --c-card-collapsible-toggle-cursor-disabled: not-allowed;
  
  /* Title */
  --c-card-collapsible-title-font-size: inherit;
  --c-card-collapsible-title-font-weight: inherit;
  --c-card-collapsible-title-color: inherit;
  --c-card-collapsible-title-line-height: var(--ds-line-height-s);
  
  /* Icon */
  --c-card-collapsible-icon-size: 1rem;
  --c-card-collapsible-icon-color: var(--ds-color-icon);
  --c-card-collapsible-icon-color-hover: var(--ds-color-icon-hover);
  --c-card-collapsible-icon-color-disabled: var(--ds-color-text-weakest);
  --c-card-collapsible-icon-transition: transform var(--ds-duration-normal) var(--ds-ease-out);
  
  /* Actions */
  --c-card-collapsible-actions-gap: var(--ds-space-s);
  
  /* Content */
  --c-card-collapsible-content-background: transparent;
  --c-card-collapsible-content-border-color: var(--ds-color-border);
  --c-card-collapsible-content-max-height: none;
  --c-card-collapsible-content-overflow: visible;
  --c-card-collapsible-content-transition: max-height var(--ds-duration-normal) var(--ds-ease-out), opacity var(--ds-duration-fast) var(--ds-ease-out);
  
  /* Body */
  --c-card-collapsible-body-padding: var(--ds-space-l);
  --c-card-collapsible-body-text-color: var(--ds-color-text);
  
  /* Footer */
  --c-card-collapsible-footer-background: var(--ds-color-surface-raised);
  --c-card-collapsible-footer-border-color: var(--ds-color-border);
  --c-card-collapsible-footer-padding: var(--ds-space-l);
  --c-card-collapsible-footer-text-color: var(--ds-color-text-weak);
  
  /* Focus state */
  --c-card-collapsible-toggle-border-color-focus: var(--ds-color-accent);
  --c-card-collapsible-toggle-shadow-focus: var(--ds-focus-ring);
}

/* Base card collapsible styles */
.c-card-collapsible {
  background-color: var(--c-card-collapsible-background);
  border: var(--c-card-collapsible-border-width) solid var(--c-card-collapsible-border-color);
  border-radius: var(--c-card-collapsible-border-radius);
  box-shadow: var(--c-card-collapsible-shadow);
  transition: var(--c-card-collapsible-transition);
  overflow: hidden;
}

/* Header */
.c-card-collapsible__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--c-card-collapsible-header-background);
  border-bottom: 1px solid var(--c-card-collapsible-header-border-color);
  padding: var(--c-card-collapsible-header-padding);
  gap: var(--c-card-collapsible-header-gap);
  transition: var(--c-card-collapsible-transition);
}

.c-card-collapsible__header:hover {
  background-color: var(--c-card-collapsible-header-background-hover);
}

/* Toggle button */
.c-card-collapsible__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: var(--c-card-collapsible-toggle-background);
  border: var(--c-card-collapsible-toggle-border);
  padding: var(--c-card-collapsible-toggle-padding);
  font-size: var(--c-card-collapsible-toggle-font-size);
  font-weight: var(--c-card-collapsible-toggle-font-weight);
  color: var(--c-card-collapsible-toggle-text-color);
  text-align: left;
  cursor: var(--c-card-collapsible-toggle-cursor);
  transition: var(--c-card-collapsible-transition);
  gap: var(--ds-space-m);
}

.c-card-collapsible__toggle:hover:not(:disabled) {
  background-color: var(--c-card-collapsible-header-background-hover);
}

.c-card-collapsible__toggle:active:not(:disabled) {
  background-color: var(--c-card-collapsible-header-background-active);
}

.c-card-collapsible__toggle:focus {
  outline: none;
  box-shadow: var(--c-card-collapsible-toggle-shadow-focus);
  z-index: 1;
}

.c-card-collapsible__toggle:disabled {
  color: var(--c-card-collapsible-toggle-text-color-disabled);
  cursor: var(--c-card-collapsible-toggle-cursor-disabled);
}

/* Title */
.c-card-collapsible__title {
  flex: 1;
  min-width: 0;
  font-size: var(--c-card-collapsible-title-font-size);
  font-weight: var(--c-card-collapsible-title-font-weight);
  color: var(--c-card-collapsible-title-color);
  line-height: var(--c-card-collapsible-title-line-height);
  margin: 0;
}

/* Icon */
.c-card-collapsible__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--c-card-collapsible-icon-size);
  height: var(--c-card-collapsible-icon-size);
  color: var(--c-card-collapsible-icon-color);
  transition: var(--c-card-collapsible-icon-transition);
  flex-shrink: 0;
}

.c-card-collapsible__toggle:hover:not(:disabled) .c-card-collapsible__icon {
  color: var(--c-card-collapsible-icon-color-hover);
}

.c-card-collapsible__toggle:disabled .c-card-collapsible__icon {
  color: var(--c-card-collapsible-icon-color-disabled);
}

/* Actions */
.c-card-collapsible__actions {
  display: flex;
  align-items: center;
  gap: var(--c-card-collapsible-actions-gap);
  flex-shrink: 0;
}

/* Content */
.c-card-collapsible__content {
  max-height: var(--c-card-collapsible-content-max-height);
  overflow: var(--c-card-collapsible-content-overflow);
  background-color: var(--c-card-collapsible-content-background);
  transition: var(--c-card-collapsible-content-transition);
  opacity: 1;
}

/* Body */
.c-card-collapsible__body {
  padding: var(--c-card-collapsible-body-padding);
  color: var(--c-card-collapsible-body-text-color);
}

.c-card-collapsible__body > *:first-child {
  margin-top: 0;
}

.c-card-collapsible__body > *:last-child {
  margin-bottom: 0;
}

/* Footer */
.c-card-collapsible__footer {
  background-color: var(--c-card-collapsible-footer-background);
  border-top: 1px solid var(--c-card-collapsible-footer-border-color);
  padding: var(--c-card-collapsible-footer-padding);
  color: var(--c-card-collapsible-footer-text-color);
}

.c-card-collapsible__footer-actions {
  display: flex;
  gap: var(--ds-space-s);
  justify-content: flex-end;
}

/* Form styles within card */
.c-card-collapsible__form {
  display: flex;
  flex-direction: column;
}

.c-card-collapsible__form label {
  display: block;
  margin-bottom: var(--ds-space-xs);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-color-text);
}

/* States */

/* Collapsed state */
.c-card-collapsible--collapsed .c-card-collapsible__content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
}

.c-card-collapsible--collapsed .c-card-collapsible__icon {
  transform: rotate(-90deg);
}

.c-card-collapsible--collapsed .c-card-collapsible__header {
  border-bottom-color: transparent;
}

/* RTL support */
[dir="rtl"] .c-card-collapsible--collapsed .c-card-collapsible__icon {
  transform: rotate(90deg);
}

/* Disabled state */
.c-card-collapsible--disabled .c-card-collapsible__toggle {
  cursor: not-allowed;
}

.c-card-collapsible--disabled .c-card-collapsible__icon {
  color: var(--c-card-collapsible-icon-color-disabled);
}

/* Size variants */
.c-card-collapsible--size-compact {
  --c-card-collapsible-header-padding: var(--ds-space-m);
  --c-card-collapsible-body-padding: var(--ds-space-m);
  --c-card-collapsible-footer-padding: var(--ds-space-m);
  --c-card-collapsible-toggle-font-size: var(--ds-font-size-m);
}

.c-card-collapsible--size-spacious {
  --c-card-collapsible-header-padding: var(--ds-space-xl);
  --c-card-collapsible-body-padding: var(--ds-space-xl);
  --c-card-collapsible-footer-padding: var(--ds-space-xl);
  --c-card-collapsible-toggle-font-size: var(--ds-font-size-xl);
}

/* Variant styles */
.c-card-collapsible--flat {
  --c-card-collapsible-shadow: none;
  --c-card-collapsible-border-width: 1px;
}

.c-card-collapsible--elevated {
  --c-card-collapsible-shadow: var(--ds-shadow-l);
}

.c-card-collapsible--borderless {
  --c-card-collapsible-border-width: 0;
  --c-card-collapsible-shadow: none;
}

/* Animation classes for JavaScript */
.c-card-collapsible--animating .c-card-collapsible__content {
  overflow: hidden;
}

/* Fade animation for content */
.c-card-collapsible__content {
  transition: max-height var(--ds-duration-normal) var(--ds-ease-out),
              opacity var(--ds-duration-fast) var(--ds-ease-out);
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
  .c-card-collapsible,
  .c-card-collapsible__toggle,
  .c-card-collapsible__content,
  .c-card-collapsible__icon {
    transition: none;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .c-card-collapsible {
    --c-card-collapsible-border-color: ButtonText;
    --c-card-collapsible-toggle-text-color: ButtonText;
    --c-card-collapsible-header-background-hover: Highlight;
  }
  
  .c-card-collapsible__toggle:focus {
    outline: 2px solid ButtonText;
    outline-offset: 2px;
  }
}

/* Dark mode support (if implemented) */
@media (prefers-color-scheme: dark) {
  .c-card-collapsible {
    --c-card-collapsible-background: var(--ds-color-surface-dark, var(--ds-color-surface));
    --c-card-collapsible-border-color: var(--ds-color-border-dark, var(--ds-color-border));
    --c-card-collapsible-toggle-text-color: var(--ds-color-text-dark, var(--ds-color-text));
  }
}

/* Print styles */
@media print {
  .c-card-collapsible {
    box-shadow: none;
    border: 1px solid #000;
  }
  
  .c-card-collapsible__content {
    max-height: none !important;
    opacity: 1 !important;
    overflow: visible !important;
  }
  
  .c-card-collapsible__icon {
    display: none;
  }
  
  .c-card-collapsible__actions {
    display: none;
  }
}