/* ===========================================
   Forms - Refined Design System
   =========================================== */

/* Base form inputs */
.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.5;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--color-text-subtle);
}

/* Focus states with glow effect */
.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-surface), var(--shadow-glow);
  background: var(--color-surface);
}

/* Hover states */
.form__input:hover:not(:focus):not(:disabled),
.form__select:hover:not(:focus):not(:disabled),
.form__textarea:hover:not(:focus):not(:disabled) {
  border-color: var(--color-border-hover);
}

/* Disabled states */
.form__input:disabled,
.form__select:disabled,
.form__textarea:disabled {
  background-color: var(--color-surface-raised);
  color: var(--color-text-muted);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Select arrow styling */
.form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-sm) center;
  padding-right: var(--spacing-2xl);
}

/* Form group */
.form__group {
  margin-bottom: var(--spacing-xl);
}

.form__group:last-child {
  margin-bottom: 0;
}

/* Labels */
.form__label {
  display: block;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

/* Help text */
.form__help-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  line-height: 1.5;
}

.form__hint--subtle {
  font-size: var(--text-xs);
  color: var(--color-text-subtle);
  margin-top: var(--spacing-xs);
  font-style: italic;
}

/* Form actions */
.form__actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-subtle);
}

/* Error states */
.form__errors {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  background: var(--color-error-surface);
  border: 1px solid var(--color-error-200);
  color: var(--color-error);
  margin-bottom: var(--spacing-xl);
}

.form__errors ul {
  margin: var(--spacing-sm) 0 0;
  padding-left: var(--spacing-lg);
  list-style: disc;
}

/* ===========================================
   Button System
   =========================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  text-decoration: none;
  border: none;
  cursor: pointer;
  line-height: 1.5;
  white-space: nowrap;
  transition:
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.button__icon {
  width: 1.125rem;
  height: 1.125rem;
  stroke: currentColor;
  stroke-width: 2;
  fill: none;
  flex-shrink: 0;
}

/* Primary button with gradient */
.button--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-sm), 0 0 0 0 var(--color-primary-glow);
}

.button--primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.button--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary button */
.button--secondary {
  background: var(--color-surface-raised);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.button--secondary:hover {
  background: var(--color-surface-elevated);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Text/Ghost button */
.button--text {
  background: transparent;
  color: var(--color-text-muted);
  padding: var(--spacing-sm);
}

.button--text:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

/* Cancel link style */
a.button--text {
  color: var(--color-text-subtle);
}

a.button--text:hover {
  color: var(--color-text);
}

/* Danger button */
.button--danger {
  background: var(--color-error);
  color: white;
}

.button--danger:hover {
  background: var(--color-error-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Link style button */
.button--link {
  background: transparent;
  color: var(--color-primary);
  padding: 0;
  border: none;
}

.button--link:hover {
  text-decoration: underline;
}

/* Size variants */
.button--small {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--text-xs);
}

.button--large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--text-base);
}

/* Disabled states */
.button[disabled],
.button[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
  box-shadow: none;
}

/* Focus state */
.button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-primary-surface);
}

/* ===========================================
   Checkbox System
   =========================================== */

.form__checkboxes {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background-color var(--duration-fast) var(--ease-out);
}

.form__checkbox:hover {
  background: var(--color-surface-hover);
}

.form__checkbox-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form__checkbox-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-spring);
}

.form__checkbox-custom::after {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--gradient-primary);
  border-radius: 2px;
  transform: scale(0);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.form__checkbox-input:checked + .form__checkbox-custom {
  border-color: var(--color-primary);
  background: var(--color-primary-surface);
}

.form__checkbox-input:checked + .form__checkbox-custom::after {
  transform: scale(1);
}

.form__checkbox-input:focus-visible + .form__checkbox-custom {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.form__checkbox-label {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.form__checkbox-label > span:first-child {
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  color: var(--color-text);
}

.form__checkbox-type {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ===========================================
   Channel & Tool Form Sections - Enhanced
   =========================================== */

.form__channels,
.form__tools {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.form__channel,
.form__tool {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.form__channel:hover,
.form__tool:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

/* Channel type indicators */
.form__channel--email::before,
.form__channel--slack::before,
.form__channel--teams::before,
.form__channel--whatsapp::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.form__channel:hover::before {
  opacity: 1;
}

/* Specific channel colors */
.form__channel--slack::before {
  background: linear-gradient(180deg, #4A154B, #611f69);
}

.form__channel--email::before {
  background: linear-gradient(180deg, #0284C7, #0369A1);
}

.form__channel--teams::before {
  background: linear-gradient(180deg, #5059C9, #7B83EB);
}

.form__channel--whatsapp::before {
  background: linear-gradient(180deg, #25D366, #128C7E);
}

.form__channel-header,
.form__tool-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-surface-raised);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.form__channel-name {
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  color: var(--color-text-emphasis);
}

.form__channel-action {
  font-size: var(--text-xs);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-primary-surface);
  border-radius: var(--radius-md);
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

.form__channel-action:hover {
  background: var(--color-primary);
  color: white;
  text-decoration: none;
}

.form__channel-info {
  width: 100%;
  margin-top: var(--spacing-xs);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  background: var(--color-surface);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
}

.form__channel-info-item {
  display: block;
}

.form__channel-fields,
.form__tool-fields {
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
}

.form__field-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form__field-group .form__label {
  margin-bottom: 0;
}

.form__field-group .form__input {
  margin-bottom: 0;
}

/* ===========================================
   Collapsible Sections - Enhanced Design
   =========================================== */

.form__section {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
  background: var(--color-surface);
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

.form__section:hover {
  border-color: var(--color-border-hover);
}

.form__section > summary {
  cursor: pointer;
  padding: var(--spacing-lg);
  font-weight: var(--font-semibold);
  font-size: var(--text-base);
  list-style: none;
  background: var(--color-surface-raised);
  color: var(--color-text-emphasis);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
  transition:
    background-color var(--duration-fast) var(--ease-out),
    color var(--duration-fast) var(--ease-out);
}

/* Chevron indicator */
.form__section > summary::before {
  content: '';
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m9 18 6-6-6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-spring);
}

.form__section[open] > summary::before {
  transform: rotate(90deg);
}

.form__section > summary:hover {
  background: var(--color-surface-elevated);
}

.form__section > summary::-webkit-details-marker {
  display: none;
}

.form__section[open] > summary {
  border-bottom: 1px solid var(--color-border-subtle);
}

/* Section header styling */
.form__section-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form__section-body {
  padding: var(--spacing-xl);
  background: var(--color-surface);
}

.form__section-body > .form__help-text:first-child {
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-surface-raised);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

/* Hidden states */
.form__tool-fields--hidden,
.form__channel-fields--hidden,
.mcp-remote-fields--hidden,
.mcp-subprocess-fields--hidden,
.icon-sprite--hidden {
  display: none;
}

/* ===========================================
   Form Layout Utilities
   =========================================== */

.form--mobile-friendly {
  max-width: 100%;
}

.form__groups {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.form__group--half {
  margin-bottom: 0;
}

/* Responsive */
@media (max-width: 640px) {
  .form__actions {
    flex-direction: column-reverse;
    gap: var(--spacing-sm);
  }

  .form__actions--mobile {
    flex-direction: column-reverse;
  }

  .button--full {
    width: 100%;
    justify-content: center;
  }

  .form__groups {
    grid-template-columns: 1fr;
  }

  .form__group--half {
    margin-bottom: var(--spacing-md);
  }

  .form__channel-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .form__checkbox-custom,
  .form__checkbox-custom::after,
  .button,
  .form__section,
  .form__section > summary,
  .form__section > summary::before,
  .form__channel,
  .form__channel::before,
  .form__channel-action {
    transition: none;
  }
}