/* ==========================================================================
   Components — Form System
   Reusable across Checkout, Contact, Account, and Profile pages.
   ========================================================================== */

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.form-label {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--color-text-muted);
    border-radius: var(--radius-md);
    font-family: inherit;
    /* Must stay >= 16px: iOS Safari force-zooms the viewport when a focused
       control's font-size is smaller, and no page here locks user scaling. */
    font-size: var(--fs-base);
    color: var(--color-text-primary);
    background-color: var(--color-surface);
}

.form-textarea {
    min-height: 6rem;
    resize: vertical;
}

.form-radio {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
    font-size: var(--fs-sm);
    color: var(--color-text-primary);
}

.form-radio--disabled {
    opacity: var(--state-disabled-opacity);
}

/* TASK-056: inline field-level validation errors (checkout form). Empty by
   default (no separate hidden toggle needed in JS — set/clear textContent). */
.form-error {
    display: none;
    font-size: var(--fs-xs);
    color: var(--color-feedback-error);
}

.form-error:not(:empty) {
    display: block;
}

.form-input--invalid,
.form-select--invalid,
.form-textarea--invalid {
    border-color: var(--color-feedback-error);
}