/*
 * Public forms and the currency selector (docs/02 §6, docs/03 §13, §20).
 *
 * Fields: ink text on paper, a hairline border that turns ink on focus.
 * Errors never rely on colour: each is a sentence in ink (600) with a
 * terracotta marker (decorative), an error summary links to every field,
 * and invalid fields get a heavier ink border plus aria-invalid. No new
 * colour token is introduced (D-070 palette only).
 */

.ru-form {
    display: grid;
    gap: var(--ru-space-5);
}

.ru-form__field {
    display: grid;
    gap: var(--ru-space-2);
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

.ru-form__label {
    float: none;
    width: auto;
    margin: 0;
    padding: 0;
    font-size: var(--ru-fs-100);
    font-weight: 600;
    line-height: 1.4;
    color: var(--ru-color-text);
}

.ru-form__optional {
    font-weight: 400;
    color: var(--ru-color-muted);
}

.ru-form__hint {
    margin: 0;
    font-size: var(--ru-fs-100);
    line-height: 1.5;
    color: var(--ru-color-muted);
}

.ru-form__error {
    position: relative;
    margin: 0;
    padding-left: var(--ru-space-4);
    font-size: var(--ru-fs-100);
    font-weight: 600;
    line-height: 1.5;
    color: var(--ru-color-text);
}

.ru-form__error::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.45em;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: var(--ru-color-accent-alt);
}

.ru-form__input {
    width: 100%;
    min-height: 48px;
    padding: var(--ru-space-3) var(--ru-space-4);
    border: 1px solid var(--ru-neutral-400);
    border-radius: 0;
    background: var(--ru-color-surface);
    color: var(--ru-color-text);
    font-family: var(--ru-font-text);
    font-size: var(--ru-fs-200);
    line-height: 1.5;
    transition: border-color var(--ru-duration-ui) var(--ru-ease), box-shadow var(--ru-duration-ui) var(--ru-ease);
}

.ru-form__input--area {
    min-height: 9rem;
    resize: vertical;
}

.ru-form__input:hover {
    border-color: var(--ru-color-muted);
}

.ru-form__input:focus {
    border-color: var(--ru-color-border-strong);
    outline: none;
    box-shadow: 0 0 0 1px var(--ru-color-border-strong);
}

.ru-form__input:focus-visible {
    outline: 2px solid var(--ru-color-focus);
    outline-offset: 2px;
}

.is-invalid .ru-form__input {
    border-width: 2px;
    border-color: var(--ru-color-border-strong);
}

/* Preferred contact: large tappable choices (≥ 44 px). */
.ru-form__options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--ru-space-2);
}

.ru-form__option {
    display: inline-flex;
    align-items: center;
    gap: var(--ru-space-2);
    min-height: 44px;
    padding: var(--ru-space-2) var(--ru-space-4);
    border: 1px solid var(--ru-color-border);
    background: var(--ru-color-surface);
    font-size: var(--ru-fs-100);
    cursor: pointer;
}

.ru-form__option input {
    width: 1rem;
    height: 1rem;
    margin: 0;
    accent-color: var(--ru-black);
}

.ru-form__option:has(input:checked) {
    border-color: var(--ru-color-border-strong);
}

.ru-form__option:has(input:focus-visible) {
    outline: 2px solid var(--ru-color-focus);
    outline-offset: 2px;
}

/* Honeypot: off-screen, out of the tab order, hidden from assistive tech. */
.ru-form__trap {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.ru-form__summary {
    margin-bottom: var(--ru-space-5);
    padding: var(--ru-space-4) var(--ru-space-5);
    border: 1px solid var(--ru-color-border-strong);
    border-left: 4px solid var(--ru-color-accent-alt);
    background: var(--ru-color-surface);
}

.ru-form__summary:focus {
    outline: 2px solid var(--ru-color-focus);
    outline-offset: 2px;
}

.ru-form__summary-title {
    margin: 0 0 var(--ru-space-2);
    font-family: var(--ru-font-text);
    font-size: var(--ru-fs-200);
    font-weight: 700;
}

.ru-form__summary ul {
    margin: 0;
    padding-left: 1.1rem;
}

.ru-form__summary li + li {
    margin-top: var(--ru-space-1);
}

.ru-form__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--ru-space-3) var(--ru-space-6);
    margin-top: var(--ru-space-2);
}

.ru-form__submit[aria-disabled="true"] {
    opacity: 0.7;
    cursor: progress;
}

/* ---------------------------------------------------------------------
 * Currency selector (header): a native select with a visible label.
 * ------------------------------------------------------------------ */

.ru-currency {
    display: flex;
    align-items: center;
    gap: var(--ru-space-2);
    margin: 0;
}

.ru-currency__label {
    font-size: var(--ru-fs-50);
    font-weight: 600;
    letter-spacing: var(--ru-tracking-label);
    text-transform: uppercase;
    color: var(--ru-color-muted);
}

.ru-currency__select {
    min-height: 44px;
    padding: 0 2rem 0 var(--ru-space-3);
    border: 1px solid var(--ru-color-border);
    border-radius: 0;
    background-color: var(--ru-color-surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 width=%2710%27 height=%276%27%3E%3Cpath d=%27M1 1l4 4 4-4%27 fill=%27none%27 stroke=%27%231c1814%27 stroke-width=%271.2%27/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    color: var(--ru-color-text);
    font-family: var(--ru-font-text);
    font-size: var(--ru-fs-100);
    font-weight: 600;
    appearance: none;
}

.ru-currency__select:focus-visible {
    outline: 2px solid var(--ru-color-focus);
    outline-offset: 2px;
}

.ru-currency__apply {
    min-height: 44px;
    padding: 0 var(--ru-space-3);
    border: 1px solid var(--ru-color-border-strong);
    background: transparent;
    color: var(--ru-color-text);
    font-size: var(--ru-fs-50);
    font-weight: 600;
    letter-spacing: var(--ru-tracking-label);
    text-transform: uppercase;
}

/* With JavaScript the choice applies on change, so the button goes. */
.js .ru-currency__apply {
    display: none;
}

@media (min-width: 992px) {
    .ru-nav__body {
        display: flex;
        align-items: center;
        gap: clamp(1.25rem, 0.5rem + 1.5vw, 2.5rem);
    }

    .ru-currency {
        padding-left: clamp(1.25rem, 0.5rem + 1.5vw, 2.5rem);
        border-left: 1px solid var(--ru-color-border);
    }

    /* The label stays for assistive technology; the bar is too quiet for it. */
    .ru-currency__label {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip-path: inset(50%);
        white-space: nowrap;
    }

    .ru-currency__select {
        border-color: transparent;
        background-color: transparent;
    }

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

    /* Homepage: the bar is light on the dark hero. */
    .ru-header--overlay .ru-currency {
        border-left-color: rgb(247 243 236 / 0.2);
    }

    .ru-header--overlay .ru-currency__select {
        color: var(--ru-neutral-100);
        background-image: url("data:image/svg+xml,%3Csvg xmlns=%27http://www.w3.org/2000/svg%27 width=%2710%27 height=%276%27%3E%3Cpath d=%27M1 1l4 4 4-4%27 fill=%27none%27 stroke=%27%23f7f3ec%27 stroke-width=%271.2%27/%3E%3C/svg%3E");
    }

    .ru-header--overlay .ru-currency__select option {
        color: var(--ru-color-text);
    }

    .ru-header--overlay .ru-currency__select:focus-visible {
        outline-color: var(--ru-color-focus-on-dark);
    }
}

/* Below lg: in the menu panel, under the page list. */
@media (max-width: 991.98px) {
    .ru-nav__body .ru-currency {
        justify-content: space-between;
        /* The last page link already ends with a hairline. */
        margin-top: var(--ru-space-5);
    }

    .ru-header__inner > .ru-currency {
        margin-left: auto;
    }
}