/* ===========================================
   HEADER
   =========================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) 0 var(--space-3);
    gap: var(--space-10);
}

.site-header__logo {
    color: var(--color-text-primary);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
}

.site-header__logo-img {
    height: 56px;
    width: auto;
}

.site-header__logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.site-header__logo-name {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-normal);
    line-height: 1;
}

.site-header__logo-sub {
    font-size: 11px;
    font-weight: var(--font-weight-regular);
    color: var(--color-text-muted);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.site-nav {
    display: flex;
    align-items: center;
    align-self: stretch;
    flex: 1;
    gap: var(--space-6);
}

.site-nav__links {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 40px;
    flex: 1;
}

.site-nav__link {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    white-space: nowrap;
    transition: color var(--transition-fast);
    position: relative;
    padding-bottom: 2px;
    text-align: center;
    line-height: 1.3;
}

.site-nav__link:hover {
    color: var(--color-brand);
}

.site-nav__link--active {
    color: var(--color-brand);
    font-weight: var(--font-weight-semibold);
}

.site-nav__sep {
    width: 1px;
    align-self: stretch;
    background-color: var(--color-brand);
    flex-shrink: 0;
    opacity: 0.6;
}

.site-nav__sep:last-of-type {
    height: calc(var(--font-size-sm) * 1.3 * 2);
    align-self: center;
}

.site-nav__link--active::after {
    content: '';
    position: absolute;
    bottom: -19px;
    left: 20%;
    right: 20%;
    height: 2px;
    background-color: var(--color-brand);
}


/* ===========================================
   FOOTER
   =========================================== */

.site-footer {
    background-color: var(--color-white);
    color: var(--color-text-primary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-6) 0;
}

.site-footer__inner {
    display: grid;
    grid-template-columns: 1.2fr 1.4fr auto;
    gap: var(--space-12);
    align-items: center;
}

.site-footer__brand {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    align-self: start;
    gap: var(--space-4);
}

.site-footer__tree {
    width: auto;
    height: 100%;
    max-height: 44px;
    object-fit: contain;
    flex-shrink: 0;
}

.site-footer__brand-text {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.site-footer__logo-text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    letter-spacing: var(--letter-spacing-wide);
}

.site-footer__tagline {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    margin-top: var(--space-1);
}

.site-footer__copy {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-5);
}

.site-footer__nav-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3) var(--space-8);
}

.site-footer__nav-link {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    line-height: var(--line-height-normal);
}

.site-footer__nav-link:hover {
    color: var(--color-brand);
}

.site-footer__social {
    display: flex;
    align-items: center;
}

.site-footer__social-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.site-footer__social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.site-footer__social-link:hover {
    color: var(--color-brand);
}

.site-footer__nco {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.site-footer__copy {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}


/* ===========================================
   КНОПКИ
   =========================================== */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
}

.button--primary {
    background-color: var(--color-brand);
    color: var(--color-white);
    border-color: var(--color-brand);
}

.button--primary:hover {
    background-color: var(--color-brand-dark);
    border-color: var(--color-brand-dark);
}

.button--secondary {
    background-color: transparent;
    color: var(--color-brand);
    border-color: var(--color-brand);
}

.button--secondary:hover {
    background-color: var(--color-brand);
    color: var(--color-white);
}

.button--light {
    background-color: var(--color-white);
    color: var(--color-brand);
    border-color: var(--color-white);
}

.button--light:hover {
    background-color: var(--color-off-white);
}

.button--ghost {
    background-color: transparent;
    color: var(--color-text-primary);
    border-color: transparent;
    padding-left: 0;
    padding-right: 0;
}

.button--ghost:hover {
    color: var(--color-brand);
}


/* ===========================================
   ТЕГИ / МЕТКИ
   =========================================== */

.tag {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-wide);
    text-transform: uppercase;
    border-radius: var(--radius-xs);
    line-height: 1.4;
}

.tag--light {
    background-color: var(--color-gray-50);
    color: var(--color-text-secondary);
}

.tag--dark {
    background-color: var(--color-graphite);
    color: var(--color-white);
}

.tag--brand {
    background-color: var(--color-bg-pale);
    color: var(--color-brand-dark);
}

.tag--brand-line {
    background-color: transparent;
    color: var(--color-brand-dark);
    border: none;
    text-transform: none;
    letter-spacing: normal;
    font-weight: var(--font-weight-semibold);
    padding-left: 0;
}


/* ===========================================
   КАРТОЧКИ
   =========================================== */

.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background-color: var(--color-bg);
}

/* Карточка материала (статья / видео / чек-лист) */
.material-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background-color: var(--color-bg);
    transition: box-shadow var(--transition-base);
}

.material-card:hover {
    box-shadow: var(--shadow-md);
}

.material-card__image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.material-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.material-card:hover .material-card__image img {
    transform: scale(1.03);
}

.material-card__body {
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    flex: 1;
}

.material-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.material-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    line-height: var(--line-height-snug);
}

.material-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-normal);
}

.material-card__author {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: auto;
    padding-top: var(--space-3);
    border-top: 1px solid var(--color-border);
}


/* ===========================================
   БЛОК СТАТИСТИКИ
   =========================================== */

.stats-row {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: 0 var(--space-10);
    border-left: 1px solid var(--color-border);
    flex: 1;
}

.stat-item:first-child {
    padding-left: 0;
    border-left: none;
}

.stat-item__number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
}

.stat-item__number--brand {
    color: var(--color-brand);
}

.stat-item__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-normal);
    max-width: 160px;
}


/* ===========================================
   ЗАГОЛОВОК СЕКЦИИ
   =========================================== */

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-6);
    margin-bottom: var(--space-10);
}

.section-header__left {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.section-header__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    line-height: var(--line-height-snug);
}

.section-header__subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    max-width: 480px;
    line-height: var(--line-height-relaxed);
}

.section-header__link {
    font-size: var(--font-size-sm);
    color: var(--color-brand);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--space-1);
    transition: color var(--transition-fast);
    flex-shrink: 0;
    margin-bottom: var(--space-1);
}

.section-header__link:hover {
    color: var(--color-brand-dark);
}

.section--dark .section-header__title {
    color: var(--color-white);
}

.section--dark .section-header__subtitle {
    color: rgba(255, 255, 255, 0.55);
}


/* ===========================================
   СЕТКИ
   =========================================== */

.grid {
    display: grid;
    gap: var(--space-6);
}

.grid--2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}


/* ===========================================
   ИЗОБРАЖЕНИЯ
   =========================================== */

.image-frame {
    overflow: hidden;
    border-radius: var(--radius-sm);
}

.image-frame--cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-frame--soft {
    border-radius: var(--radius-lg);
}


/* ===========================================
   ХЛЕБНЫЕ КРОШКИ
   =========================================== */

.breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
}

.breadcrumbs__item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.breadcrumbs__item:not(:last-child)::after {
    content: '/';
    color: var(--color-gray-300);
}

.breadcrumbs__link {
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
    color: var(--color-brand);
}


/* ===========================================
   КНОПКА — ТЁМНЫЙ ВАРИАНТ
   =========================================== */

.button--dark {
    background-color: var(--color-bg-dark);
    color: var(--color-white);
    border-color: var(--color-bg-dark);
}

.button--dark:hover {
    background-color: var(--color-gray-700);
    border-color: var(--color-gray-700);
}


/* ===========================================
   НАВ-КАРТОЧКИ (С чего начать)
   =========================================== */

.nav-card {
    display: flex;
    flex-direction: column;
    padding: 28px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg);
    text-decoration: none;
    position: relative;
    overflow: hidden;
    min-height: 200px;
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.nav-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-brand);
}

.nav-card__body {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-width: 65%;
    flex: 1;
}

.nav-card__num {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-regular);
    letter-spacing: var(--letter-spacing-wider);
    color: var(--color-brand);
}

.nav-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    line-height: var(--line-height-snug);
}

.nav-card__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    line-height: var(--line-height-relaxed);
    flex: 1;
}

.nav-card__arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--color-white);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-top: auto;
    align-self: flex-start;
    transition: transform var(--transition-fast);
}

.nav-card:hover .nav-card__arrow {
    transform: translateX(4px);
}

.nav-card__img {
    position: absolute;
    right: 0;
    bottom: 0;
    width: auto;
    height: 80%;
    object-fit: contain;
    object-position: bottom right;
    z-index: 1;
    pointer-events: none;
}

/* Фоны карточек «С чего начать?», «База знаний — направления», «Беременность — для кого» */
.home-start .nav-card:nth-child(1),
.knowledge-directions .nav-card:nth-child(1),
.pregnancy-audience .nav-card:nth-child(1) { background-color: #cec4ba8f; }
.home-start .nav-card:nth-child(2),
.knowledge-directions .nav-card:nth-child(2),
.pregnancy-audience .nav-card:nth-child(2) { background-color: #b9bda469; }
.home-start .nav-card:nth-child(3),
.knowledge-directions .nav-card:nth-child(3),
.pregnancy-audience .nav-card:nth-child(3) { background-color: #f5f0ea; }
.home-start .nav-card:nth-child(4),
.knowledge-directions .nav-card:nth-child(4),
.pregnancy-audience .nav-card:nth-child(4) { background-color: var(--color-off-white); }

/* Индивидуальная высота фото для каждой карточки */
.home-start .nav-card:nth-child(1) .nav-card__img,
.knowledge-directions .nav-card:nth-child(1) .nav-card__img { height: 100%; right: -20px; }
.home-start .nav-card:nth-child(2) .nav-card__img,
.knowledge-directions .nav-card:nth-child(2) .nav-card__img { height: 93%; right: -20px; }
.home-start .nav-card:nth-child(3) .nav-card__img,
.knowledge-directions .nav-card:nth-child(3) .nav-card__img { height: 91%; right: -48px; bottom: -30px; }
.home-start .nav-card:nth-child(4) .nav-card__img,
.knowledge-directions .nav-card:nth-child(4) .nav-card__img { height: 75%; }

/* Одинаковое расположение фото для блока аудитории на странице беременности */
.pregnancy-audience .nav-card__img { height: 85%; right: -56px; bottom: -30px; }

.pregnancy-audience .nav-card {
    padding-top: var(--space-10);
}

/* Цифры под текстом, внизу flex-колонки */
.pregnancy-audience .nav-card__num {
    order: 3;
    margin-top: auto;
}


/* ===========================================
   ЭЛЕМЕНТЫ ДОВЕРИЯ
   =========================================== */

.trust-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0 var(--space-5);
    padding: 0 var(--space-8);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    flex: 1;
    align-items: start;
}

.trust-item:first-child {
    padding-left: 0;
    border-left: none;
}

.trust-item__num {
    font-size: 80px;
    font-weight: var(--font-weight-bold);
    color: var(--color-brand);
    line-height: 1;
    letter-spacing: var(--letter-spacing-tight);
    padding-top: 4px;
}

.trust-item__right {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.trust-item__icon {
    height: 44px;
    display: flex;
    align-items: flex-end;
    margin-bottom: var(--space-2);
    color: var(--color-brand);
}

.trust-item__icon svg {
    height: 40px;
    width: auto;
}

.trust-item__title {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
}

.trust-item__text {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.55);
    line-height: var(--line-height-relaxed);
}


/* ===========================================
   ОТЗЫВЫ
   =========================================== */

.review-item {
    padding: var(--space-8);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.review-item__text {
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    font-style: italic;
}

.review-item__author {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: var(--font-weight-medium);
}


/* ===========================================
   НОВОСТИ
   =========================================== */

.news-list {
    display: flex;
    flex-direction: column;
}

.news-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-5) 0;
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
    align-items: flex-start;
    transition: color var(--transition-fast);
}

.news-item:first-child {
    border-top: 1px solid var(--color-border);
}

.news-item__date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    white-space: nowrap;
    flex-shrink: 0;
    padding-top: 1px;
}

.news-item__title {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    line-height: var(--line-height-snug);
    transition: color var(--transition-fast);
}

.news-item:hover .news-item__title {
    color: var(--color-brand);
}


/* ===========================================
   СУММЫ ПОЖЕРТВОВАНИЙ
   =========================================== */

.donation-amount {
    padding: var(--space-3) var(--space-4);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
    text-align: center;
}

.donation-amount:hover {
    border-color: var(--color-brand);
    color: var(--color-brand);
}

.donation-amount--active {
    background-color: var(--color-brand);
    border-color: var(--color-brand);
    color: var(--color-white);
}


/* ===========================================
   FEATURED-МОДИФИКАТОР КАРТОЧКИ МАТЕРИАЛА
   =========================================== */

.material-card--featured {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.material-card--featured .material-card__image {
    position: absolute;
    inset: 0;
    aspect-ratio: unset;
    border-radius: 0;
}

.material-card--featured .material-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.material-card--featured .material-card__body {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 50%;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-4);
    padding: var(--space-8);
}

.material-card--featured .material-card__title {
    font-size: var(--font-size-xl);
    color: var(--color-text-primary);
}

.material-card--featured .material-card__excerpt {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.material-card--featured .material-card__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-top: var(--space-2);
}


/* ===========================================
   ПЛЕЙСХОЛДЕРЫ ИЗОБРАЖЕНИЙ
   =========================================== */

.expert-card__image--placeholder {
    background-color: var(--color-gray-50);
}

.material-card__placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--color-gray-50);
}


/* ===========================================
   АДАПТИВ
   =========================================== */

@media (max-width: 1023px) {
    .site-nav {
        gap: var(--space-5);
    }

    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid--3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .site-footer__inner {
        grid-template-columns: 1fr 1fr;
    }

    .site-footer__social {
        grid-column: 1 / -1;
    }

    .stat-item {
        padding: 0 var(--space-6);
    }

    .trust-item {
        padding: 0 var(--space-5);
    }
}

@media (max-width: 767px) {
    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .nav-card {
        height: auto;
        min-height: 200px;
    }

    .nav-card__body {
        max-width: 60%;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats-row {
        flex-wrap: wrap;
        gap: var(--space-6);
    }

    .stat-item {
        padding: 0;
        border-left: none;
        flex: 1 1 40%;
    }

    .site-footer__inner {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .site-footer__social {
        grid-column: auto;
    }

    .site-footer__nav-grid {
        grid-template-columns: 1fr;
    }

    .trust-item {
        padding: var(--space-4) 0;
        border-left: none;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        flex: 1 1 40%;
    }

    .trust-item:first-child {
        border-top: none;
    }
}

@media (max-width: 479px) {
    .site-nav {
        display: none;
    }

    .button {
        width: 100%;
        justify-content: center;
    }

    .stat-item {
        flex: 1 1 100%;
    }
}