/* ==========================================================================
   G WORLD — forms
   Labels are always visible (never a placeholder standing in for a label),
   errors are attached to the field with aria-describedby, and the whole form
   works with a keyboard alone.
   ========================================================================== */

.form {
  display: grid;
  gap: var(--space-4);
}

.form--narrow {
  max-inline-size: 30rem;
}

.field {
  display: grid;
  gap: var(--space-1);
}

.field > label,
.field > .field__label {
  font-weight: 600;
  font-size: var(--step--1);
}

.field__hint {
  font-size: var(--step--1);
  color: var(--text-subtle);
  margin: 0;
}

.field__error,
.field-error {
  font-size: var(--step--1);
  color: var(--danger-700);
  margin: 0;
}

.field input,
.field select,
.field textarea {
  inline-size: 100%;
  padding: var(--space-2) var(--space-3);
  min-block-size: 2.6rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  color: var(--text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.field textarea {
  min-block-size: 8rem;
  resize: vertical;
  line-height: 1.5;
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: var(--brand-300);
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  border-color: var(--brand-500);
  outline: 3px solid var(--focus-ring);
  outline-offset: 1px;
}

.field input[aria-invalid='true'],
.field select[aria-invalid='true'],
.field textarea[aria-invalid='true'] {
  border-color: var(--danger-600);
  background-color: color-mix(in srgb, var(--danger-100) 45%, var(--surface));
}

.field input:disabled,
.field select:disabled,
.field textarea:disabled {
  background-color: var(--surface-3);
  color: var(--text-subtle);
  cursor: not-allowed;
}

/* Two fields side by side on wide screens, stacked on narrow ones. */
.field-row {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
}

.field-inline {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.field-inline input[type='checkbox'],
.field-inline input[type='radio'] {
  inline-size: 1.15rem;
  block-size: 1.15rem;
  margin-block-start: 0.22rem;
  accent-color: var(--brand-600);
  flex: 0 0 auto;
}

.field-inline label {
  font-weight: 500;
  font-size: var(--step--1);
}

/* Password field with a reveal button. */
.field--password {
  position: relative;
}

.field--password input {
  padding-inline-end: 4.5rem;
}

.password-toggle {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: var(--space-2);
  transform: translateY(-50%);
  border: 1px solid var(--border);
  background-color: var(--surface-2);
  border-radius: var(--radius-sm);
  padding: 0.15rem var(--space-2);
  font-size: 0.72rem;
  cursor: pointer;
}

/* Password strength hint (client-side only — the API is the authority). */
.strength {
  display: flex;
  gap: var(--space-1);
  align-items: center;
  font-size: var(--step--1);
  color: var(--text-subtle);
}

.strength__bars {
  display: flex;
  gap: 3px;
  flex: 1 1 auto;
}

.strength__bar {
  block-size: 4px;
  flex: 1 1 0;
  border-radius: var(--radius-pill);
  background-color: var(--surface-3);
}

.strength__bar--on {
  background-color: var(--success-600);
}

/* Search + filter controls used by the catalog toolbar. */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: end;
}

.toolbar .field {
  flex: 1 1 12rem;
  min-inline-size: 10rem;
}

.search-input {
  display: flex;
  gap: var(--space-2);
  flex: 1 1 18rem;
}

.search-input input {
  flex: 1 1 auto;
}

/* Radio/checkbox groups rendered as a chip row (quiz options). */
.choice-group {
  display: grid;
  gap: var(--space-2);
  border: 0;
  padding: 0;
  margin: 0;
}

.choice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--surface);
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.choice:hover {
  border-color: var(--brand-300);
  background-color: var(--surface-2);
}

.choice input {
  inline-size: 1.2rem;
  block-size: 1.2rem;
  margin-block-start: 0.15rem;
  accent-color: var(--brand-600);
  flex: 0 0 auto;
}

.choice:has(input:checked) {
  border-color: var(--brand-500);
  background-color: var(--brand-50);
}

.choice--correct {
  border-color: var(--success-600);
  background-color: var(--success-100);
}

.choice--wrong {
  border-color: var(--danger-600);
  background-color: var(--danger-100);
}

.fieldset {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: 0;
}

.fieldset legend {
  font-weight: 650;
  padding-inline: var(--space-2);
}

/* Submit row with a live status region for screen readers. */
.form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.form-status {
  font-size: var(--step--1);
  color: var(--text-muted);
}

.form-status--error {
  color: var(--danger-700);
}

.form-status--success {
  color: var(--success-700);
}

/* Verification-code input (six or eight groups like XK4T-9QW2-M7PL). */
.code-input {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}