/* ============================================================
   JARVIS Form Components — Phase 4C
   Zentrale Formular-Stile: Felder, Labels, Inputs, Validierung.
   Alle Farben via Design-Tokens — keine direkten Hex-Werte.
   ============================================================ */

/* ============================================================
   A. FORM SECTION — Gruppenbereich
   ============================================================ */
.form-section {
  margin-bottom: var(--space-8, 32px);
}

.form-section__title {
  font-size: var(--font-size-lg, 1.125rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--color-text-primary, #1a1d21);
  margin: 0 0 var(--space-1, 4px);
}

.form-section__description {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-secondary, #495057);
  margin: 0 0 var(--space-4, 16px);
}

/* ============================================================
   B. FORM FIELD — Einzelfeldgruppe
   ============================================================ */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1, 4px);
  margin-bottom: var(--space-5, 20px);
}

.form-field--compact {
  margin-bottom: var(--space-3, 12px);
}

/* ============================================================
   C. FORM LABEL
   ============================================================ */
.form-label {
  display: block;
  font-size: var(--font-size-sm, 0.875rem);
  font-weight: var(--font-weight-medium, 500);
  color: var(--color-text-primary, #1a1d21);
  line-height: var(--line-height-snug, 1.375);
  cursor: default;
}

.form-required {
  color: var(--color-status-danger, #dc2626);
  margin-left: var(--space-0-5, 2px);
}

/* ============================================================
   D. FORM HELP TEXT
   ============================================================ */
.form-help {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-secondary, #495057);
  line-height: var(--line-height-normal, 1.5);
  margin: 0;
}

/* ============================================================
   E. FORM CONTROL — Basis für alle Eingabeelemente
   ============================================================ */
.form-control {
  display: block;
  width: 100%;
  min-height: var(--size-input-md, 40px);
  padding: var(--space-2, 8px) var(--space-3, 12px);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-md, 1rem);
  font-weight: var(--font-weight-normal, 400);
  line-height: var(--line-height-normal, 1.5);
  color: var(--color-text-primary, #1a1d21);
  background: var(--color-bg-surface, #ffffff);
  border: var(--border-width-thin, 1px) solid var(--color-border-default, #dee2e6);
  border-radius: var(--radius-md, 8px);
  box-sizing: border-box;
  transition: border-color var(--duration-fast, 100ms) var(--ease-out),
              box-shadow   var(--duration-fast, 100ms) var(--ease-out);
  appearance: none;
  -webkit-appearance: none;
}

.form-control::placeholder {
  color: var(--color-text-tertiary, #868e96);
}

.form-control:hover:not(:disabled):not([readonly]) {
  border-color: var(--color-border-strong, #adb5bd);
}

.form-control:focus,
.form-control:focus-visible {
  outline: none;
  border-color: var(--color-border-focus, #6366f1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-control:disabled {
  background: var(--color-bg-sunken, #e9ecef);
  color: var(--color-text-disabled, #adb5bd);
  cursor: not-allowed;
  opacity: 1;
}

.form-control[readonly] {
  background: var(--color-bg-sunken, #e9ecef);
  border-color: var(--color-border-default, #dee2e6);
  cursor: default;
}

/* Fehlerzustand */
.form-control--error,
.form-control[aria-invalid="true"] {
  border-color: var(--color-border-error, #dc2626);
}

.form-control--error:focus,
.form-control[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
}

/* Erfolgszustand */
.form-control--success {
  border-color: var(--color-status-success, #16a34a);
}

.form-control--success:focus {
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.2);
}

/* ============================================================
   F. TEXTAREA
   ============================================================ */
.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================================
   G. SELECT
   ============================================================ */
.form-select {
  padding-right: var(--space-8, 32px);
  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='%23495057' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3, 12px) center;
  background-size: 16px;
  cursor: pointer;
}

.form-select:disabled {
  cursor: not-allowed;
}

/* ============================================================
   H. CHECKBOX
   ============================================================ */
.form-field--checkbox {
  flex-direction: column;
  align-items: flex-start;
}

.form-checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2, 8px);
  cursor: pointer;
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-primary, #1a1d21);
  min-height: var(--size-touch-target, 44px);
  align-items: center;
}

.form-checkbox {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-action-primary, #6366f1);
}

.form-checkbox:focus-visible {
  outline: 2px solid var(--color-focus-ring, #6366f1);
  outline-offset: 2px;
}

.form-checkbox-text {
  line-height: var(--line-height-snug, 1.375);
  padding-top: 2px;
}

/* ============================================================
   I. RADIO GROUP
   ============================================================ */
.form-radio-group {
  border: none;
  padding: 0;
  margin: 0 0 var(--space-5, 20px);
}

.form-radio-group.form-field--error {
  margin-bottom: var(--space-5, 20px);
}

.form-radio-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-2, 8px);
  margin-top: var(--space-2, 8px);
}

.form-radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-2, 8px);
  cursor: pointer;
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-primary, #1a1d21);
  min-height: var(--size-touch-target, 44px);
}

.form-radio {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: var(--color-action-primary, #6366f1);
}

.form-radio:focus-visible {
  outline: 2px solid var(--color-focus-ring, #6366f1);
  outline-offset: 2px;
}

.form-radio-text {
  line-height: var(--line-height-snug, 1.375);
}

/* ============================================================
   J. SWITCH (Toggle)
   ============================================================ */
.form-field--switch {
  flex-direction: column;
  align-items: flex-start;
}

.form-switch-label {
  display: flex;
  align-items: center;
  gap: var(--space-3, 12px);
  cursor: pointer;
  min-height: var(--size-touch-target, 44px);
}

.form-switch {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.form-switch-track {
  display: inline-block;
  width: 44px;
  height: 24px;
  background: var(--color-border-strong, #adb5bd);
  border-radius: var(--radius-full, 9999px);
  position: relative;
  flex-shrink: 0;
  transition: background var(--duration-fast, 100ms) var(--ease-out);
}

.form-switch-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: white;
  border-radius: var(--radius-full, 9999px);
  transition: transform var(--duration-fast, 100ms) var(--ease-out);
}

.form-switch:checked + .form-switch-track {
  background: var(--color-action-primary, #6366f1);
}

.form-switch:checked + .form-switch-track::after {
  transform: translateX(20px);
}

.form-switch:focus-visible + .form-switch-track {
  outline: 2px solid var(--color-focus-ring, #6366f1);
  outline-offset: 2px;
}

.form-switch:disabled + .form-switch-track {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-switch-text {
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-primary, #1a1d21);
}

/* ============================================================
   K. FORM ERROR TEXT
   ============================================================ */
.form-error {
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-status-danger, #dc2626);
  line-height: var(--line-height-normal, 1.5);
  margin: 0;
}

.form-field--error .form-label {
  color: var(--color-status-danger, #dc2626);
}

/* ============================================================
   L. FORM ERROR SUMMARY
   ============================================================ */
.form-error-summary {
  background: var(--color-status-danger-bg, #fef2f2);
  border: var(--border-width-thin, 1px) solid var(--color-status-danger-border, #ef4444);
  border-left: var(--border-width-thick, 3px) solid var(--color-status-danger, #dc2626);
  border-radius: var(--radius-md, 8px);
  padding: var(--space-4, 16px) var(--space-5, 20px);
  margin-bottom: var(--space-6, 24px);
}

.form-error-summary__title {
  font-size: var(--font-size-md, 1rem);
  font-weight: var(--font-weight-semibold, 600);
  color: var(--color-status-danger, #dc2626);
  margin: 0 0 var(--space-2, 8px);
}

.form-error-summary__list {
  margin: 0;
  padding-left: var(--space-5, 20px);
}

.form-error-summary__list li {
  margin-bottom: var(--space-1, 4px);
}

.form-error-summary__list a {
  color: var(--color-status-danger, #dc2626);
  font-weight: var(--font-weight-medium, 500);
}

.form-error-summary__list a:hover {
  text-decoration: underline;
}

/* ============================================================
   M. FORM ACTIONS — Submit und Abbrechen
   ============================================================ */
.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3, 12px);
  align-items: center;
  margin-top: var(--space-6, 24px);
  padding-top: var(--space-5, 20px);
  border-top: var(--border-width-thin, 1px) solid var(--color-border-default, #dee2e6);
}

/* ============================================================
   N. RESPONSIVE — Mobile Anpassungen
   ============================================================ */
@media (max-width: 640px) {
  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .form-actions .btn {
    justify-content: center;
    width: 100%;
  }
}

/* ============================================================
   O. REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .form-control,
  .form-switch-track,
  .form-switch-track::after {
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   P. DARK MODE
   ============================================================ */
@media (prefers-color-scheme: dark) {
  .form-label {
    color: var(--color-text-primary, #f1f3f5);
  }

  .form-help {
    color: var(--color-text-secondary, #adb5bd);
  }

  .form-control {
    background: var(--color-bg-surface, #1e2023);
    border-color: var(--color-border-default, #343a40);
    color: var(--color-text-primary, #f1f3f5);
  }

  .form-control::placeholder {
    color: var(--color-text-tertiary, #868e96);
  }

  .form-control:disabled,
  .form-control[readonly] {
    background: var(--color-bg-sunken, #2b3035);
  }

  .form-select {
    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='%23adb5bd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  }

  .form-checkbox-label,
  .form-radio-label,
  .form-switch-text {
    color: var(--color-text-primary, #f1f3f5);
  }

  .form-section__title {
    color: var(--color-text-primary, #f1f3f5);
  }

  .form-section__description {
    color: var(--color-text-secondary, #adb5bd);
  }

  .form-actions {
    border-top-color: var(--color-border-default, #343a40);
  }

  .form-error-summary {
    background: rgba(127, 29, 29, 0.3);
    border-color: rgba(220, 38, 38, 0.5);
  }
}

[data-theme="dark"] .form-control {
  background: var(--color-bg-surface, #1e2023);
  border-color: var(--color-border-default, #343a40);
  color: var(--color-text-primary, #f1f3f5);
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-control[readonly] {
  background: var(--color-bg-sunken, #2b3035);
}

[data-theme="dark"] .form-label,
[data-theme="dark"] .form-section__title {
  color: var(--color-text-primary, #f1f3f5);
}

[data-theme="dark"] .form-help,
[data-theme="dark"] .form-section__description {
  color: var(--color-text-secondary, #adb5bd);
}

[data-theme="dark"] .form-actions {
  border-top-color: var(--color-border-default, #343a40);
}

[data-theme="dark"] .form-checkbox-label,
[data-theme="dark"] .form-radio-label,
[data-theme="dark"] .form-switch-text {
  color: var(--color-text-primary, #f1f3f5);
}