/* ==========================================================================
   Интеграция дочерних компаний — корпоративный портал
   style.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
    --color-bg: #ffffff;
    --color-bg-soft: #f7f8fa;
    --color-bg-muted: #f1f4f8;

    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #64748b;

    --color-border: #e5e7eb;
    --color-border-strong: #d1d5db;

    --color-accent: #e30613;
    --color-accent-hover: #c2050f;
    --color-accent-soft: #fde8ea;

    --color-success: #0f9d58;
    --color-warn: #f59e0b;
    --color-info: #2563eb;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 999px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.06);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);

    --container-max: 1200px;
    --container-pad: 24px;

    --header-h: 68px;

    --transition: 180ms ease;
}

/* --------------------------------------------------------------------------
   2. Reset / base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
                 "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
    margin: 0;
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--color-text);
}

p { margin: 0; }

a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--color-accent); }

img, svg { display: block; max-width: 100%; }

button { font: inherit; cursor: pointer; }

ul { list-style: none; margin: 0; padding: 0; }

/* --------------------------------------------------------------------------
   3. Layout helpers
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

.section { padding: 96px 0; }

.section:nth-of-type(even) { background-color: var(--color-bg-soft); }

.section__header {
    margin-bottom: 48px;
    max-width: 680px;
}
.section__title {
    font-size: clamp(28px, 3vw, 36px);
    margin-bottom: 12px;
}
.section__subtitle {
    font-size: 16px;
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    border: 1px solid transparent;
    transition: background-color var(--transition),
                color var(--transition),
                border-color var(--transition),
                transform var(--transition);
}

.btn--primary {
    background-color: var(--color-accent);
    color: #fff;
}
.btn--primary:hover {
    background-color: var(--color-accent-hover);
    color: #fff;
}

.btn--ghost {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border-strong);
}
.btn--ghost:hover {
    background-color: var(--color-bg-muted);
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   5. Header
   -------------------------------------------------------------------------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-h);
    background-color: rgba(255, 255, 255, 0.92);
    backdrop-filter: saturate(160%) blur(8px);
    border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--color-text);
}
.site-header__logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--color-accent);
    color: #fff;
    font-weight: 700;
    font-size: 16px;
}
.site-header__logo-text { font-size: 15px; }

.site-nav__list {
    display: flex;
    gap: 28px;
}
.site-nav__list a {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 500;
}
.site-nav__list a:hover { color: var(--color-accent); }

.site-header__burger {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-sm);
    padding: 0;
    flex-direction: column;
    gap: 4px;
    align-items: center;
    justify-content: center;
}
.site-header__burger span {
    display: block;
    width: 18px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* --------------------------------------------------------------------------
   6. Hero
   -------------------------------------------------------------------------- */
.hero {
    padding: 120px 0 112px;
    background:
        radial-gradient(circle at 85% 15%, rgba(227, 6, 19, 0.08), transparent 45%),
        linear-gradient(180deg, #ffffff 0%, #f7f8fa 100%);
}
.hero__inner { max-width: 760px; }

.hero__eyebrow {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 24px;
    border-radius: var(--radius-pill);
    background-color: var(--color-accent-soft);
    color: var(--color-accent);
    font-size: 13px;
    font-weight: 500;
}

.hero__title {
    font-size: clamp(36px, 5vw, 56px);
    margin-bottom: 20px;
}
.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero__actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero__stats {
    margin: 56px 0 0;
    padding: 24px 0 0;
    border-top: 1px solid var(--color-border);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 24px;
    max-width: 640px;
}
.hero__stat { margin: 0; }
.hero__stat-label {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}
.hero__stat-value {
    margin: 0;
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

/* --------------------------------------------------------------------------
   7. News
   -------------------------------------------------------------------------- */
.news__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.news-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition),
                border-color var(--transition);
}
.news-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

.news-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 13px;
}
.news-card__date { color: var(--color-text-muted); }
.news-card__tag {
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    background-color: var(--color-bg-muted);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.news-card__title {
    font-size: 18px;
    margin-bottom: 10px;
}
.news-card__text {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 18px;
    flex-grow: 1;
}
.news-card__link {
    color: var(--color-accent);
    font-weight: 500;
    font-size: 14px;
}
.news-card__link:hover { color: var(--color-accent-hover); }

/* --------------------------------------------------------------------------
   8. Filters (active projects)
   -------------------------------------------------------------------------- */
.filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}
.filters__btn {
    padding: 8px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border-strong);
    background-color: transparent;
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 500;
    transition: background-color var(--transition), color var(--transition),
                border-color var(--transition);
}
.filters__btn:hover {
    color: var(--color-text);
    background-color: var(--color-bg-muted);
}
.filters__btn.is-active {
    background-color: var(--color-text);
    color: #fff;
    border-color: var(--color-text);
}

/* --------------------------------------------------------------------------
   9. Active projects
   -------------------------------------------------------------------------- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.project-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: transform var(--transition), box-shadow var(--transition),
                border-color var(--transition);
}
.project-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-strong);
}

.project-card__header {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 12px;
}
.project-card__title { font-size: 18px; }

.project-card__text {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.project-card__progress {
    height: 6px;
    background-color: var(--color-bg-muted);
    border-radius: var(--radius-pill);
    overflow: hidden;
}
.project-card__progress-bar {
    width: var(--progress, 0%);
    height: 100%;
    background-color: var(--color-accent);
    border-radius: inherit;
    transition: width 600ms ease;
}

.project-card__footer {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
    color: var(--color-text-muted);
}

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
}
.status-badge--in-progress {
    background-color: #e8f0fe;
    color: var(--color-info);
}
.status-badge--testing {
    background-color: #fef3c7;
    color: #92400e;
}
.status-badge--review {
    background-color: #ede9fe;
    color: #6d28d9;
}

/* Filter / collapse visibility */
.is-hidden { display: none !important; }

/* --------------------------------------------------------------------------
   10. Other projects
   -------------------------------------------------------------------------- */
.other-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.other-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px 20px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: border-color var(--transition), transform var(--transition);
}
.other-card:hover {
    border-color: var(--color-border-strong);
    transform: translateY(-2px);
}
.other-card__year {
    color: var(--color-text-muted);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}
.other-card__name {
    flex: 1;
    color: var(--color-text);
    font-weight: 500;
}
.other-card__tag {
    font-size: 12px;
    color: var(--color-text-secondary);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    background-color: var(--color-bg-muted);
}

.other-projects__more {
    margin-top: 28px;
    display: flex;
    justify-content: center;
}

/* --------------------------------------------------------------------------
   11. Info resources
   -------------------------------------------------------------------------- */
.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.info-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 28px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition), transform var(--transition),
                box-shadow var(--transition);
}
.info-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
}
.info-card__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin-bottom: 12px;
    border-radius: var(--radius-sm);
    background-color: var(--color-accent-soft);
    color: var(--color-accent);
    font-weight: 700;
    font-size: 18px;
}
.info-card__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}
.info-card__text {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   12. Team
   -------------------------------------------------------------------------- */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.member-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    text-align: left;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition), box-shadow var(--transition);
}
.member-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.member-card__avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1e293b, #334155);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 18px;
    margin-bottom: 16px;
    letter-spacing: 0.02em;
}
.member-card__name {
    font-size: 17px;
    margin-bottom: 4px;
}
.member-card__role {
    font-size: 13px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 12px;
}
.member-card__bio {
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    flex-grow: 1;
}
.member-card__contact {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    align-self: flex-start;
    border-bottom: 1px solid currentColor;
    padding-bottom: 1px;
}
.member-card__contact:hover { color: var(--color-accent); }

/* --------------------------------------------------------------------------
   13. Experts
   -------------------------------------------------------------------------- */
.experts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.expert-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 32px;
    background: linear-gradient(180deg, #ffffff 0%, #fafafb 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
}
.expert-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.expert-card__avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent), #8a0410);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    font-weight: 600;
}

.expert-card__name {
    font-size: 20px;
    margin-bottom: 4px;
}
.expert-card__role {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}
.expert-card__quote {
    margin: 0 0 16px;
    padding: 14px 16px;
    border-left: 3px solid var(--color-accent);
    background-color: var(--color-bg-soft);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    font-style: italic;
}
.expert-card__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-accent);
}
.expert-card__link:hover { color: var(--color-accent-hover); }

/* --------------------------------------------------------------------------
   13.5. Companies banner (CTA на каталог дочерних компаний)
   -------------------------------------------------------------------------- */
.companies-banner {
    padding: 56px 0;
    background:
        radial-gradient(circle at 90% 50%, rgba(227, 6, 19, 0.18), transparent 55%),
        linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
}
.companies-banner .banner-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.companies-banner .banner-text {
    max-width: 680px;
    flex: 1 1 320px;
}
.companies-banner .banner-eyebrow {
    display: inline-block;
    padding: 6px 12px;
    margin-bottom: 16px;
    border-radius: var(--radius-pill);
    background-color: rgba(227, 6, 19, 0.18);
    color: #ff8a91;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.01em;
}
.companies-banner .banner-title {
    font-size: clamp(24px, 2.8vw, 32px);
    margin: 0 0 12px;
    color: #fff;
    letter-spacing: -0.01em;
}
.companies-banner .banner-desc {
    margin: 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: 15px;
    line-height: 1.55;
    max-width: 580px;
}
.companies-banner .banner-cta {
    display: inline-flex;
    align-items: center;
    padding: 14px 24px;
    background-color: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 500;
    flex-shrink: 0;
    transition: background-color var(--transition), transform var(--transition),
                box-shadow var(--transition);
}
.companies-banner .banner-cta:hover {
    background-color: var(--color-accent-hover);
    color: #fff;
    transform: translateX(4px);
    box-shadow: 0 8px 24px rgba(227, 6, 19, 0.25);
}
@media (max-width: 720px) {
    .companies-banner { padding: 40px 0; }
    .companies-banner .banner-content {
        flex-direction: column;
        align-items: stretch;
        gap: 24px;
    }
    .companies-banner .banner-cta {
        justify-content: center;
        width: 100%;
    }
}

/* --------------------------------------------------------------------------
   14. Footer
   -------------------------------------------------------------------------- */
.site-footer {
    padding: 32px 0;
    background-color: #0f172a;
    color: #cbd5e1;
}
.site-footer__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.site-footer__text {
    font-size: 13px;
    color: #cbd5e1;
}
.site-footer__text--muted { color: #64748b; }

/* --------------------------------------------------------------------------
   15. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 860px) {
    .section { padding: 72px 0; }
    .hero { padding: 88px 0 80px; }
    .section__header { margin-bottom: 32px; }

    .site-header__burger {
        display: inline-flex;
    }

    .site-nav {
        position: absolute;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: #fff;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        padding: 16px var(--container-pad);
        display: none;
    }
    .site-nav.is-open { display: block; }
    .site-nav__list {
        flex-direction: column;
        gap: 6px;
    }
    .site-nav__list a {
        display: block;
        padding: 10px 4px;
        font-size: 15px;
    }
}

@media (max-width: 520px) {
    :root { --container-pad: 16px; }

    .hero__title { font-size: 32px; }
    .hero__subtitle { font-size: 16px; }

    .hero__actions { flex-direction: column; align-items: stretch; }
    .btn { width: 100%; }

    .site-header__logo-text { display: none; }

    .expert-card { padding: 24px; }
}