/* ION Heat — Nitriding Processes Comparison */

:root {
    --active: #4694c2;
    --nadzagolovok-font-family: "Open Sans", sans-serif;
    --nadzagolovok-font-size:   18px;
    --nadzagolovok-line-height: 130%;
    --nadzagolovok-font-weight: 800;
}

.nitriding .container {
    flex-direction: row;
    gap: 9.2vw;
    align-items: center;
    justify-content: flex-start;
    padding-top: 100px;
    padding-bottom: 100px;
}

/* Левая колонка */
.nitriding__text {
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-items: flex-start;
    flex-shrink: 0;
    width: 520px;
}

.nitriding__label {
    color: var(--text);
    font-family: var(--nadzagolovok-font-family);
    font-size: var(--nadzagolovok-font-size);
    line-height: var(--nadzagolovok-line-height);
    font-weight: var(--nadzagolovok-font-weight);
    text-transform: uppercase;
}

.nitriding__head {
    display: flex;
    flex-direction: column;
    gap: 24px;
    align-self: stretch;
}

.nitriding__title {
    color: var(--text);
    text-align: left;
    font-family: var(--h2-font-family);
    font-size: var(--h2-font-size);
    line-height: var(--h2-line-height);
    font-weight: var(--h2-font-weight);
    align-self: stretch;
}

.nitriding__desc {
    color: var(--text);
    text-align: left;
    font-family: var(--text1-font-family);
    font-size: var(--text1-font-size);
    line-height: var(--text1-line-height);
    font-weight: var(--text1-font-weight);
    align-self: stretch;
}

.nitriding__btn {
    background: var(--button-who-choose);
    border-bottom: 1px solid var(--line);
    padding: 10px 20px 10px 0;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    align-self: stretch;
    text-decoration: none;
    transition: background 0.2s;
}

.nitriding__btn:hover {
    background: var(--accent);
}

.nitriding__btn span {
    color: var(--text);
    font-family: "Open Sans", sans-serif;
    font-size: 16px;
    line-height: 130%;
    font-weight: 300;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nitriding__btn:hover span {
    color: var(--white);
}

.nitriding__btn img {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Правая колонка — аккордеон */
.nitriding__accordion {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    width: 100%;
}

.nitriding__item {
    border-bottom: 1px solid var(--line);
}

.nitriding__item-head {
    padding: 10px 40px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
}

.nitriding__item-head:hover {
    background: #f5f5f5;
}

.nitriding__item-label {
    color: var(--text);
    font-family: "Open Sans", sans-serif;
    font-size: 16px;
    line-height: 130%;
    font-weight: 300;
    text-transform: uppercase;
    transition: color 0.2s;
}

.nitriding__item.is-active .nitriding__item-label {
    color: var(--active);
}

.nitriding__item-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.3s;
}

.nitriding__item.is-active .nitriding__item-icon {
    transform: rotate(180deg);
}

.nitriding__item-body {
    display: none;
    padding: 16px 40px 20px;
    color: var(--text);
    font-family: "Manrope", sans-serif;
    font-size: 18px;
    line-height: 150%;
    font-weight: 300;
}

.nitriding__item.is-active .nitriding__item-body {
    display: block;
}

/* ── Адаптив ────────────────────────────────────────────────── */
@media (max-width: 1200px) {
    .nitriding .container {
        flex-direction: column;
        gap: 48px;
        padding-top: 60px;
        padding-bottom: 60px;
    }

    .nitriding__text {
        width: 100%;
    }

    .nitriding__title {
        font-size: clamp(32px, 5vw, 64px);
    }
}

@media (max-width: 768px) {
    .nitriding__item-head {
        padding: 12px 16px;
    }

    .nitriding__item-body {
        padding: 12px 16px 16px;
        font-size: 16px;
    }
}