/* ==========================================================================
   MMD RUSSIA STEEL – SUSTAINABILITY PAGE STYLES (css/sustainability.css)
   Clean eco-steel styling inspired by reference sustainability layout
   ========================================================================== */

/* ─── SUSTAINABILITY HERO & HEADER ───────────────────────────────── */
.sustainability-hero {
    position: relative;
    background: linear-gradient(135deg, #070d18 0%, #0f1c33 60%, #172a4a 100%);
    padding: 75px 0 65px;
    color: #ffffff;
    overflow: hidden;
}

.sustainability-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 20%, rgba(16, 185, 129, 0.15) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(0, 91, 181, 0.18) 0%, transparent 45%);
    pointer-events: none;
}

.sustainability-hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.sustainability-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #38bdf8;
    margin-bottom: 16px;
}

.sustainability-breadcrumb a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s ease;
}

.sustainability-breadcrumb a:hover {
    color: #ffffff;
}

.sustainability-title-box {
    margin-bottom: 12px;
}

.sustainability-main-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2.8rem, 5vw, 4.2rem);
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #ffffff;
    line-height: 1.05;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.sustainability-sub-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #d97706;
    margin-bottom: 20px;
}

.sustainability-hero-desc {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #cbd5e1;
}


/* ─── CORPORATE SUSTAINABILITY NARRATIVE ────────────────────────── */
.sustainability-intro-section {
    padding: 70px 0 50px;
    background-color: #ffffff;
}

.sustainability-narrative-box {
    max-width: 1050px;
    margin: 0 auto;
}

.sustainability-narrative-paragraph {
    font-size: 1.05rem;
    line-height: 1.85;
    color: #334155;
    margin-bottom: 22px;
}

.sustainability-narrative-paragraph strong {
    color: #0f172a;
}


/* ─── COMMUNITY INITIATIVES SHOWCASE (Direct Reference Match) ───── */
.initiatives-section {
    padding: 60px 0 90px;
    background-color: #ffffff;
}

.initiatives-grid {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 50px;
    align-items: start;
}

/* Left Column: Stack of Thumbnails */
.initiatives-sidebar {
    display: flex;
    flex-direction: column;
}

.initiatives-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.initiative-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.3s ease;
}

.initiative-item:hover {
    background: #ffffff;
    border-color: #005bb5;
    box-shadow: 0 4px 16px rgba(0, 91, 181, 0.08);
}

.initiative-item.active {
    background: #ffffff;
    border-color: #005bb5;
    box-shadow: 0 4px 18px rgba(0, 91, 181, 0.15);
    position: relative;
}

.initiative-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: #005bb5;
    border-radius: 10px 0 0 10px;
}

.initiative-thumb {
    width: 100px;
    height: 70px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
}

.initiative-meta {
    display: flex;
    flex-direction: column;
}

.initiative-title {
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #475569;
    line-height: 1.35;
    margin-bottom: 6px;
    transition: color 0.2s ease;
}

.initiative-item.active .initiative-title,
.initiative-item:hover .initiative-title {
    color: #005bb5;
}

.initiative-date {
    font-size: 0.78rem;
    font-weight: 600;
    color: #005bb5;
}

/* Sidebar Pagination Controls (Matching Reference Screenshot `< 1 2 >`) */
.initiatives-pagination {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
}

.csr-page-btn {
    width: 34px;
    height: 34px;
    border-radius: 4px;
    border: 1px solid #cbd5e1;
    background: #e2e8f0;
    color: #64748b;
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.csr-page-btn:hover {
    background: #ffffff;
    border-color: #005bb5;
    color: #005bb5;
}

.csr-page-btn.active {
    background: #005bb5;
    border-color: #005bb5;
    color: #ffffff;
}

/* Right Column: Featured Initiative Main View */
.featured-initiative-display {
    display: flex;
    flex-direction: column;
}

.featured-initiative-image-box {
    position: relative;
    margin-bottom: 35px;
}

.sustainability-image-frame-box {
    display: none;
}

.featured-initiative-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 14px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
    position: relative;
    z-index: 2;
    display: block;
}

.featured-initiative-body {
    position: relative;
    z-index: 2;
}

.featured-initiative-paragraph {
    font-size: 1.02rem;
    line-height: 1.85;
    color: #334155;
    margin-bottom: 20px;
}

.featured-initiative-paragraph:last-child {
    margin-bottom: 0;
}


/* ─── GREEN STEEL PILLARS SECTION ───────────────────────────────── */
.green-steel-pillars {
    padding: 85px 0;
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
}

.green-pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 45px;
}

.green-pillar-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 35px 28px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    text-align: center;
}

.green-pillar-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 36px rgba(16, 185, 129, 0.12);
    border-color: #10b981;
}

.green-card-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #ecfdf5;
    color: #10b981;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 20px;
}

.green-pillar-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 12px;
}

.green-pillar-card p {
    font-size: 0.94rem;
    line-height: 1.75;
    color: #475569;
}


/* ─── RESPONSIVE BREAKPOINTS ────────────────────────────────────── */
@media (max-width: 1024px) {
    .initiatives-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .initiatives-sidebar {
        max-width: 600px;
    }

    .green-pillars-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sustainability-hero {
        padding: 50px 0;
    }

    .sustainability-main-title {
        font-size: 2.5rem;
    }

    .featured-initiative-img {
        height: 280px;
    }

    .sustainability-image-frame-box {
        width: 80px;
        height: 80px;
    }
}