/* ==========================================================================
   CƠ KHÍ ĐẠI THẮNG - ABOUT PAGE STYLESHEET (about.css)
   Chuẩn hóa giao diện 2026: Plus Jakarta Sans & Xanh Dương Sáng Hiện Đại
   ========================================================================== */

/* ==========================================================================
   0. PAGE-SPECIFIC GLOBAL OVERRIDES (ABOUT PAGE)
   ========================================================================== */
/* Hide homepage slider on about page */
.flexslider {
    display: none !important;
}

/* Active navigation tab for About page */
.dt-nav-item .dt-nav-link.active_tag {
    background: transparent !important;
    color: #FFFFFF !important;
}
.dt-nav-item .dt-nav-link.active_tag::after {
    width: 0 !important;
}
.dt-nav-item .dt-nav-link[href="/gioi-thieu"] {
    background: rgba(255, 255, 255, 0.18) !important;
    color: #FFFFFF !important;
    font-weight: 700 !important;
}
.dt-nav-item .dt-nav-link[href="/gioi-thieu"]::after {
    width: 100% !important;
}

/* ==========================================================================
   1. HERO PAGE BANNER & BREADCRUMB
   ========================================================================== */
.about-hero {
    position: relative;
    background: linear-gradient(135deg, #075985 0%, #0284C7 60%, #0099E5 100%);
    padding: 60px 0 50px 0;
    color: #FFFFFF;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 10% 80%, rgba(2, 132, 199, 0.3) 0%, transparent 50%);
    pointer-events: none;
}

.about-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    font-weight: 500;
    color: #BAE6FD;
    margin-bottom: 16px;
    list-style: none;
    padding: 0;
}

.about-breadcrumb a {
    color: #E0F2FE;
    text-decoration: none;
    transition: color 0.2s ease;
}

.about-breadcrumb a:hover {
    color: #FFFFFF;
    text-decoration: underline;
}

.about-breadcrumb .separator {
    color: #7DD3FC;
    font-size: 11px;
}

.about-breadcrumb .current {
    color: #FFFFFF;
    font-weight: 700;
}

.about-hero-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.02em;
    margin: 0 0 12px 0;
    color: #FFFFFF;
    text-transform: uppercase;
}

.about-hero-subtitle {
    font-size: 16px;
    line-height: 1.6;
    color: #E0F2FE;
    max-width: 780px;
    margin: 0;
    font-weight: 400;
}

/* ==========================================================================
   2. TỔNG QUAN DOANH NGHIỆP (OVERVIEW)
   ========================================================================== */
.about-overview-section {
    padding: 70px 0;
    background: #FFFFFF;
}

.about-overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-media-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 45px rgba(2, 132, 199, 0.14);
    border: 2px solid #E0F2FE;
}

.about-media-card img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.about-media-card:hover img {
    transform: scale(1.04);
}

.about-badge-exp {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(135deg, #FF6500 0%, #FF8A00 100%);
    color: #FFFFFF;
    padding: 14px 22px;
    border-radius: 14px;
    box-shadow: 0 10px 24px rgba(255, 101, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-badge-exp .badge-num {
    font-size: 32px;
    font-weight: 800;
    line-height: 1;
}

.about-badge-exp .badge-text {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1.3;
}

.about-subheading {
    color: #0284C7;
    font-size: 13.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: inline-block;
    margin-bottom: 8px;
}

.about-section-heading {
    font-size: 28px;
    font-weight: 800;
    color: #0F172A;
    line-height: 1.3;
    margin-bottom: 18px;
    letter-spacing: -0.01em;
}

.about-section-heading span {
    color: #0284C7;
}

.about-desc-text {
    font-size: 15.5px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 24px;
}

.about-checklist {
    list-style: none;
    padding: 0;
    margin: 0 0 30px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.about-check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 15px;
    color: #334155;
    font-weight: 500;
    line-height: 1.5;
}

.about-check-item i {
    color: #0284C7;
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}

/* ==========================================================================
   3. TẦM NHÌN - SỨ MỆNH - GIÁ TRỊ CỐT LÕI (3 PILLARS)
   ========================================================================== */
.about-pillars-section {
    padding: 70px 0;
    background: linear-gradient(180deg, #F8FAFC 0%, #F0F9FF 100%);
    position: relative;
}

.pillars-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 50px auto;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.pillar-card {
    background: #FFFFFF;
    border-radius: 18px;
    padding: 36px 30px;
    border: 1.5px solid #BAE6FD;
    box-shadow: 0 10px 30px rgba(2, 132, 199, 0.07);
    transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.pillar-card:hover {
    transform: translateY(-8px);
    border-color: #0284C7;
    box-shadow: 0 20px 45px rgba(2, 132, 199, 0.18);
}

.pillar-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #0284C7, #0099E5);
}

.pillar-icon-wrap {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: #E0F2FE;
    color: #0284C7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 22px;
    box-shadow: 0 6px 18px rgba(2, 132, 199, 0.15);
    transition: all 0.3s ease;
}

.pillar-card:hover .pillar-icon-wrap {
    background: #0284C7;
    color: #FFFFFF;
    transform: rotate(8deg) scale(1.05);
}

.pillar-title {
    font-size: 20px;
    font-weight: 800;
    color: #0F172A;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.2px;
}

.pillar-desc {
    font-size: 14.5px;
    line-height: 1.65;
    color: #475569;
    margin: 0;
}

/* ==========================================================================
   4. QUY TRÌNH 4 BƯỚC CHUYÊN NGHIỆP (ENGINEERING PROCESS)
   ========================================================================== */
.about-process-section {
    padding: 75px 0;
    background: #FFFFFF;
}

.process-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 50px auto;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.process-card {
    background: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: 16px;
    padding: 30px 24px;
    position: relative;
    transition: all 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.process-card:hover {
    transform: translateY(-6px);
    background: #FFFFFF;
    border-color: #7DD3FC;
    box-shadow: 0 16px 36px rgba(2, 132, 199, 0.14);
}

.process-step-num {
    font-size: 40px;
    font-weight: 900;
    color: #BAE6FD;
    line-height: 1;
    margin-bottom: 16px;
    font-family: var(--dt-font, 'Plus Jakarta Sans', sans-serif);
    transition: color 0.3s ease;
}

.process-card:hover .process-step-num {
    color: #0284C7;
}

.process-title {
    font-size: 17px;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 10px;
    line-height: 1.4;
}

.process-desc {
    font-size: 13.5px;
    line-height: 1.6;
    color: #64748B;
    margin: 0;
}

/* ==========================================================================
   5. HAI DỊCH VỤ TRỌNG TÂM (CORE SERVICES SHOWCASE)
   ========================================================================== */
.about-services-section {
    padding: 75px 0;
    background: #F0F9FF;
}

.services-block-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-bottom: 60px;
    background: #FFFFFF;
    padding: 40px;
    border-radius: 20px;
    border: 1.5px solid #BAE6FD;
    box-shadow: 0 12px 36px rgba(2, 132, 199, 0.08);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.services-block-row:last-child {
    margin-bottom: 0;
}

.services-block-row:hover {
    box-shadow: 0 18px 45px rgba(2, 132, 199, 0.14);
}

.service-block-media {
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.service-block-media img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.services-block-row:hover .service-block-media img {
    transform: scale(1.03);
}

.service-tag {
    display: inline-block;
    background: #E0F2FE;
    color: #0284C7;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.service-block-title {
    font-size: 24px;
    font-weight: 800;
    color: #0F172A;
    margin-bottom: 14px;
    line-height: 1.3;
}

.service-block-desc {
    font-size: 15px;
    line-height: 1.7;
    color: #475569;
    margin-bottom: 20px;
}

.service-points {
    list-style: none;
    padding: 0;
    margin: 0 0 24px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-point-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14.5px;
    color: #334155;
    font-weight: 600;
}

.service-point-item i {
    color: #FF6500;
    font-size: 14px;
}

.btn-service-action {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #0284C7 0%, #0099E5 100%);
    color: #FFFFFF !important;
    padding: 12px 26px;
    border-radius: 50px;
    font-size: 13.5px;
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none !important;
    letter-spacing: 0.4px;
    box-shadow: 0 6px 18px rgba(2, 132, 199, 0.3);
    transition: all 0.25s ease;
}

.btn-service-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(2, 132, 199, 0.45);
}

/* ==========================================================================
   6. CTA BANNER (CALL TO ACTION)
   ========================================================================== */
.about-cta-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #075985 0%, #0284C7 100%);
    color: #FFFFFF;
    position: relative;
    overflow: hidden;
}

.about-cta-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 25px;
}

.cta-text-wrap {
    max-width: 650px;
}

.cta-main-title {
    font-size: 28px;
    font-weight: 800;
    color: #FFFFFF;
    margin-bottom: 8px;
    line-height: 1.3;
}

.cta-sub-text {
    font-size: 15px;
    color: #BAE6FD;
    margin: 0;
    line-height: 1.6;
}

.cta-action-wrap {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.btn-cta-hotline {
    background: #FF6500;
    color: #FFFFFF !important;
    padding: 14px 26px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 800;
    text-decoration: none !important;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 6px 20px rgba(255, 101, 0, 0.4);
    transition: all 0.25s ease;
}

.btn-cta-hotline:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 26px rgba(255, 101, 0, 0.55);
}

.btn-cta-quote {
    background: #FFFFFF;
    color: #0284C7 !important;
    padding: 14px 26px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none !important;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.25s ease;
}

.btn-cta-quote:hover {
    background: #F0F9FF;
    transform: translateY(-3px);
}

/* ==========================================================================
   7. RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 991px) {
    .about-overview-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .pillars-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .services-block-row {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 24px;
    }
    
    .services-block-row.reverse-order .service-block-media {
        order: -1;
    }
    
    .about-hero-title {
        font-size: 26px;
    }
    
    .about-cta-card {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-action-wrap {
        justify-content: center;
    }
}

@media (max-width: 575px) {
    .process-grid {
        grid-template-columns: 1fr;
    }
    
    .about-hero {
        padding: 40px 0 35px 0;
    }
    
    .about-hero-title {
        font-size: 22px;
    }
    
    .about-section-heading {
        font-size: 22px;
    }
    
    .cta-main-title {
        font-size: 22px;
    }
}