/* ==========================================================================
   MODUL SYSTEME — Главная страница (Fluid Architecture — Engineering Cobalt)
   ========================================================================== */

.main-homepage {
    background-color: var(--clr-bg-page);
    color: var(--clr-dark);
    padding-bottom: clamp(48px, 5vw, 80px);
}

/* -------------------------------------------------------
   1. HERO SECTION (ПЕРВЫЙ ЭКРАН)
   ------------------------------------------------------- */
.main-homepage .hero-section {
    position: relative;
    min-height: clamp(460px, 58vh, 660px);
    padding: clamp(44px, 5vw, 80px) var(--container-padding) clamp(64px, 6vw, 90px) var(--container-padding);
    border-bottom: 1px solid var(--clr-border);
    background-color: #e8ecf2;

    background-image:
        linear-gradient(90deg, rgba(244, 246, 249, 0.98) 0%, rgba(244, 246, 249, 0.85) 45%, rgba(244, 246, 249, 0.15) 78%, transparent 100%),
        url('./assets/hero-bg.png');

    background-size: cover;
    background-position: right top;
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    box-sizing: border-box;
}

.main-homepage .hero-container {
    max-width: var(--container-max-width);
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.main-homepage .hero-title {
    font-size: var(--text-hero);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.5px;
    color: var(--clr-dark);
    margin: 0 0 var(--space-sm) 0;
    text-shadow: none;
    text-transform: uppercase;
    max-width: 820px;
}

.main-homepage .hero-subtitle {
    font-size: var(--text-base);
    line-height: 1.55;
    color: #475569;
    max-width: 580px;
    margin-bottom: var(--space-lg);
    font-weight: 400;
}

.main-homepage .hero-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* Кнопки первого экрана */
.main-homepage .btn-hero-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    background-color: var(--accent-cobalt);
    color: var(--clr-white);
    border: 1px solid var(--accent-cobalt);
    border-radius: 6px;
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 6px 18px rgba(29, 78, 216, 0.22);
    white-space: nowrap;
}

.main-homepage .btn-hero-primary:hover {
    background-color: var(--accent-cobalt-hover);
    border-color: var(--accent-cobalt-hover);
    color: var(--clr-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(29, 78, 216, 0.30);
}

.main-homepage .btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    background-color: var(--clr-white);
    color: var(--clr-dark);
    border: 1px solid var(--clr-dark);
    border-radius: 6px;
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: all 0.25s ease;
    white-space: nowrap;
}

.main-homepage .btn-hero-secondary:hover {
    border-color: var(--accent-cobalt);
    color: var(--accent-cobalt);
    background-color: var(--clr-white);
    box-shadow: 0 6px 18px var(--accent-cobalt-soft);
    transform: translateY(-2px);
}

/* -------------------------------------------------------
   2. ИНЖЕНЕРНАЯ ПЛАНКА СТАНДАРТОВ (МОСТ ПОД HERO)
   ------------------------------------------------------- */
.main-homepage .standards-strip-section {
    max-width: var(--container-max-width);
    margin: -36px auto 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 10;
    box-sizing: border-box;
}

.main-homepage .standards-strip-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
    overflow: hidden;
}

.main-homepage .standard-item {
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    border-right: 1px solid var(--clr-border);
    transition: background-color 0.2s ease;
}

.main-homepage .standard-item:last-child {
    border-right: none;
}

.main-homepage .standard-item:hover {
    background-color: #F8FAFC;
}

.main-homepage .standard-badge {
    display: inline-block;
    align-self: flex-start;
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent-cobalt);
    background: #EFF6FF;
    border: 1px solid #BFDBFE;
    padding: 3px 8px;
    border-radius: 4px;
}

.main-homepage .standard-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.main-homepage .standard-text strong {
    font-size: 14px;
    font-weight: 700;
    color: var(--clr-dark);
}

.main-homepage .standard-text span {
    font-size: 12.5px;
    color: var(--clr-muted);
    line-height: 1.4;
}

/* -------------------------------------------------------
   3. ВИТРИНА КАТЕГОРИЙ (BENTO GRID НА 3 КОЛОНКИ)
   ------------------------------------------------------- */
.main-homepage .categories-section {
    max-width: var(--container-max-width);
    margin: clamp(44px, 5vw, 68px) auto 0 auto;
    padding: 0 var(--container-padding);
    box-sizing: border-box;
}

.main-homepage .section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: var(--space-lg);
}

.main-homepage .section-subtitle-tag {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-cobalt);
    display: block;
    margin-bottom: 6px;
}

.main-homepage .section-title {
    font-size: var(--text-title);
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--clr-dark);
    margin: 0;
    text-shadow: none;
}

.main-homepage .link-all-catalog {
    color: var(--clr-dark);
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: color 0.2s ease;
    white-space: nowrap;
}

.main-homepage .link-all-catalog:hover {
    color: var(--accent-cobalt);
}

.main-homepage .bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    width: 100%;
}

.main-homepage .bento-card {
    position: relative;
    background-color: var(--clr-dark);
    border: 1px solid var(--clr-border);
    border-radius: 10px;
    padding: var(--space-lg);
    min-height: clamp(260px, 20vw, 360px);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    box-sizing: border-box;
    box-shadow: var(--shadow-soft);
}

.main-homepage .bento-card.bento-hero {
    grid-column: span 2;
}

.main-homepage .bento-card-content {
    position: relative;
    z-index: 5;
    margin-top: auto;
}

.main-homepage .bento-title {
    font-size: var(--text-md);
    font-weight: 700;
    line-height: 1.15;
    color: var(--clr-white);
    margin: 0;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
}

.main-homepage .bento-hero .bento-title {
    font-size: var(--text-title);
}

.main-homepage .bento-image-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.main-homepage .bento-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

.main-homepage .bento-image-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to top,
        rgba(9, 13, 22, 0.80) 0%,
        rgba(9, 13, 22, 0.25) 50%,
        rgba(9, 13, 22, 0.05) 100%
    );
    z-index: 2;
}

.main-homepage .bento-card:hover .bento-image-wrapper img {
    transform: scale(1.05);
}

.main-homepage .bento-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
    border-color: var(--accent-cobalt);
}

/* -------------------------------------------------------
   4. ПРОЕКТНЫЙ B2B-БЛОК ПЕРЕД ПОДВАЛОМ
   ------------------------------------------------------- */
.main-homepage .home-b2b-section {
    max-width: var(--container-max-width);
    margin: clamp(44px, 5vw, 68px) auto 0 auto;
    padding: 0 var(--container-padding);
    box-sizing: border-box;
}

.main-homepage .home-b2b-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-left: 4px solid var(--accent-cobalt);
    border-radius: 12px;
    padding: clamp(28px, 3.5vw, 44px);
    box-shadow: var(--shadow-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
}

.main-homepage .home-b2b-content {
    max-width: 780px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.main-homepage .home-b2b-tag {
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent-cobalt);
}

.main-homepage .home-b2b-title {
    font-size: clamp(20px, 2vw, 28px);
    font-weight: 800;
    color: var(--clr-dark);
    letter-spacing: -0.4px;
    text-transform: uppercase;
    line-height: 1.2;
    margin: 0;
}

.main-homepage .home-b2b-desc {
    font-size: var(--text-base);
    color: #475569;
    line-height: 1.6;
    margin: 0;
}

.main-homepage .home-b2b-perks {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--clr-dark);
}

.main-homepage .home-b2b-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex-shrink: 0;
    min-width: 240px;
}

.main-homepage .btn-b2b-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 24px;
    background-color: var(--accent-cobalt);
    color: var(--clr-white);
    border: 1px solid var(--accent-cobalt);
    border-radius: 6px;
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(29, 78, 216, 0.22);
}

.main-homepage .btn-b2b-primary:hover {
    background-color: var(--accent-cobalt-hover);
    border-color: var(--accent-cobalt-hover);
    transform: translateY(-2px);
}

.main-homepage .btn-b2b-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 24px;
    background-color: var(--clr-bg-light);
    color: var(--clr-dark);
    border: 1px solid var(--clr-border);
    border-radius: 6px;
    text-decoration: none;
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s ease;
}

.main-homepage .btn-b2b-secondary:hover {
    background-color: var(--clr-white);
    border-color: var(--accent-cobalt);
    color: var(--accent-cobalt);
}

/* -------------------------------------------------------
   5. МОБИЛЬНЫЕ И ПЛАНШЕТНЫЕ УСТРОЙСТВА
   ------------------------------------------------------- */
@media (max-width: 992px) {
    .main-homepage .hero-section {
        background-position: right top;
    }

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

    .main-homepage .standard-item:nth-child(2) {
        border-right: none;
    }

    .main-homepage .standard-item:nth-child(1),
    .main-homepage .standard-item:nth-child(2) {
        border-bottom: 1px solid var(--clr-border);
    }

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

    .main-homepage .bento-card.bento-hero {
        grid-column: span 2;
    }

    .main-homepage .home-b2b-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .main-homepage .home-b2b-actions {
        width: 100%;
        flex-direction: row;
    }

    .main-homepage .btn-b2b-primary,
    .main-homepage .btn-b2b-secondary {
        flex: 1;
    }
}

@media (max-width: 768px) {
    .main-homepage .hero-section {
        padding-bottom: 36px;
        background-position: 70% top;
        background-image:
            linear-gradient(180deg, rgba(244, 246, 249, 0.96) 0%, rgba(244, 246, 249, 0.82) 60%, rgba(244, 246, 249, 0.35) 100%),
            url('./assets/hero-bg.png');
    }

    .main-homepage .standards-strip-section {
        margin-top: 16px;
    }

    .main-homepage .standards-strip-grid {
        grid-template-columns: 1fr;
    }

    .main-homepage .standard-item {
        border-right: none;
        border-bottom: 1px solid var(--clr-border);
        padding: 16px;
    }

    .main-homepage .standard-item:last-child {
        border-bottom: none;
    }

    .main-homepage .hero-actions {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
        width: 100%;
    }

    .main-homepage .btn-hero-primary,
    .main-homepage .btn-hero-secondary {
        width: auto;
        flex: 1 1 auto;
        padding: 12px 16px;
        font-size: 11px;
    }

    .main-homepage .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .main-homepage .bento-grid {
        grid-template-columns: 1fr;
    }

    .main-homepage .bento-card.bento-hero {
        grid-column: span 1;
    }

    .main-homepage .bento-card {
        min-height: 220px;
    }

    .main-homepage .home-b2b-actions {
        flex-direction: column;
    }
}