/* ═══════════════════════════════════════════════
   rhx-radio-group & rhx-radio — Radio button components
   ═══════════════════════════════════════════════ */

/* ── Radio Group (fieldset) ── */
.rhx-radio-group {
    border: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--rhx-space-sm);
}

/* ── Legend ── */
.rhx-radio-group__legend {
    font-size: var(--rhx-font-size-sm);
    font-weight: var(--rhx-font-weight-medium);
    color: var(--rhx-color-text);
    margin-bottom: var(--rhx-space-xs);
    padding: 0;
}

/* ── Items container ── */
.rhx-radio-group__items {
    display: flex;
    flex-direction: column;
    gap: var(--rhx-space-sm);
}

/* ── Inline layout ── */
.rhx-radio-group--inline .rhx-radio-group__items {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--rhx-space-md);
}

/* ── Hint ── */
.rhx-radio-group__hint {
    font-size: var(--rhx-font-size-xs);
    color: var(--rhx-color-text-muted);
}

/* ── Error ── */
.rhx-radio-group__error {
    font-size: var(--rhx-font-size-xs);
    color: var(--rhx-color-danger-500);
}

/* ── Disabled ── */
.rhx-radio-group--disabled {
    opacity: 0.5;
}

/* ── Error modifier ── */
.rhx-radio-group--error .rhx-radio__control,
.rhx-radio-group[data-rhx-invalid] .rhx-radio__control {
    border-color: var(--rhx-color-danger-500);
}

/* ── Size variants on group ── */
.rhx-radio-group--small .rhx-radio-group__legend {
    font-size: var(--rhx-font-size-xs);
}

.rhx-radio-group--large .rhx-radio-group__legend {
    font-size: var(--rhx-font-size-md);
}

/* ══════════════════════════════════════════════
   Individual radio button
   ══════════════════════════════════════════════ */

/* ── Radio label (clickable row) ── */
.rhx-radio {
    display: inline-flex;
    align-items: center;
    gap: var(--rhx-space-sm);
    cursor: pointer;
    user-select: none;
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-text);
    line-height: var(--rhx-leading-normal);
}

/* ── Custom visual control (circle) ── */
.rhx-radio__control {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    border: 2px solid var(--rhx-color-border);
    border-radius: 50%;
    background: var(--rhx-color-surface);
    transition: border-color 150ms ease;
}

/* Inner dot (always present, scaled to 0 when unchecked) */
.rhx-radio__control::after {
    content: '';
    width: 0.625rem;
    height: 0.625rem;
    border-radius: 50%;
    background: var(--rhx-color-brand-500);
    transform: scale(0);
    transition: transform 150ms ease;
}

/* ── Checked state ── */
.rhx-radio__native:checked ~ .rhx-radio__control {
    border-color: var(--rhx-color-brand-500);
}

.rhx-radio__native:checked ~ .rhx-radio__control::after {
    transform: scale(1);
}

/* ── Focus ring ── */
.rhx-radio__native:focus-visible ~ .rhx-radio__control {
    outline: 2px solid var(--rhx-color-brand-500);
    outline-offset: 2px;
}

/* ── Hover ── */
.rhx-radio:hover .rhx-radio__control {
    border-color: var(--rhx-color-brand-400);
}

/* ── Radio text ── */
.rhx-radio__text {
    font-size: var(--rhx-font-size-sm);
    color: var(--rhx-color-text);
}

/* ── Disabled radio ── */
.rhx-radio--disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

/* ── Size: small (set from group) ── */
.rhx-radio-group--small .rhx-radio__control {
    width: 1rem;
    height: 1rem;
}

.rhx-radio-group--small .rhx-radio__control::after {
    width: 0.5rem;
    height: 0.5rem;
}

.rhx-radio-group--small .rhx-radio__text {
    font-size: var(--rhx-font-size-xs);
}

/* ── Size: large (set from group) ── */
.rhx-radio-group--large .rhx-radio__control {
    width: 1.5rem;
    height: 1.5rem;
}

.rhx-radio-group--large .rhx-radio__control::after {
    width: 0.75rem;
    height: 0.75rem;
}

.rhx-radio-group--large .rhx-radio__text {
    font-size: var(--rhx-font-size-md);
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
    .rhx-radio__control,
    .rhx-radio__control::after {
        transition: none;
    }
}