/* ===================================
   RESPONSIVE TRANG GIỚI THIỆU
   Thiết kế chuẩn UX/UI
   Không thay đổi desktop
   =================================== */

/* ===================================
   TABLET (≤ 992px)
   =================================== */
@media (max-width: 992px) {
    /* Company Info Section */
    .company-info-section {
        padding: 60px 30px !important;
    }
    
    .company-info-title {
        font-size: 26px !important;
        margin-bottom: 35px !important;
    }
    
    .company-info-grid {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }
    
    .company-card {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .company-card-header h3 {
        font-size: 15px !important;
    }
    
    /* Business Areas Section */
    .business-areas-section {
        padding: 60px 30px !important;
    }
    
    .business-areas-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 25px !important;
    }
    
    .business-area-card {
        padding: 30px 20px !important;
    }
    
    /* Core Values Section */
    .core-values-section {
        padding: 60px 30px !important;
    }
    
    .core-values-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 20px !important;
    }
    
    .value-card {
        margin: 0 !important;
        border-right: none !important;
    }
}

/* ===================================
   MOBILE LỚN (≤ 768px)
   =================================== */
@media (max-width: 768px) {
    /* Company Info Section */
    .company-info-section {
        padding: 50px 20px !important;
    }
    
    .company-info-title {
        font-size: 22px !important;
        margin-bottom: 30px !important;
        padding-bottom: 15px !important;
    }
    
    .company-info-title::after {
        width: 60px !important;
        height: 3px !important;
    }
    
    .company-card {
        border-radius: 12px !important;
    }
    
    .company-card-header {
        padding: 20px 20px !important;
    }
    
    .company-card-header h3 {
        font-size: 14px !important;
        line-height: 1.5 !important;
    }
    
    .company-card-body {
        padding: 25px 20px !important;
    }
    
    .info-item {
        margin-bottom: 15px !important;
        padding-bottom: 15px !important;
    }
    
    .info-item strong {
        font-size: 11px !important;
        margin-bottom: 5px !important;
    }
    
    .info-item p {
        font-size: 13px !important;
        line-height: 1.7 !important;
    }
    
    /* Business Areas Section */
    .business-areas-section {
        padding: 50px 20px !important;
    }
    
    .section-title {
        font-size: 22px !important;
        margin-bottom: 20px !important;
    }
    
    .section-subtitle {
        font-size: 13px !important;
        margin-top: 0 !important;
        margin-bottom: 30px !important;
    }
    
    .business-areas-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }
    
    .business-area-card {
        padding: 25px 20px !important;
        border-radius: 12px !important;
    }
    
    .business-icon {
        width: 55px !important;
        height: 55px !important;
        margin-bottom: 20px !important;
    }
    
    .business-icon i {
        font-size: 28px !important;
    }
    
    .business-title {
        font-size: 16px !important;
        margin-bottom: 12px !important;
    }
    
    .business-description {
        font-size: 13px !important;
        line-height: 1.6 !important;
    }
    
    /* Core Values Section */
    .core-values-section {
        padding: 50px 20px !important;
    }
    
    .core-values-section .section-title {
        font-size: 20px !important;
        margin-bottom: 30px !important;
        line-height: 1.5 !important;
    }
    
    .core-values-grid {
        grid-template-columns: 1fr !important;
        gap: 15px !important;
        margin-bottom: 30px !important;
    }
    
    .value-card {
        padding: 25px 20px !important;
        border-radius: 12px !important;
    }
    
    .value-title {
        font-size: 17px !important;
        margin-bottom: 15px !important;
        padding-bottom: 10px !important;
    }
    
    .value-title::after {
        width: 100% !important;
        max-width: 150px !important;
    }
    
    .value-description {
        font-size: 13px !important;
        line-height: 1.6 !important;
    }
}

/* ===================================
   MOBILE NHỎ (≤ 480px)
   =================================== */
@media (max-width: 480px) {
    /* Company Info Section */
    .company-info-section {
        padding: 40px 15px !important;
    }
    
    .company-info-title {
        font-size: 19px !important;
        margin-bottom: 25px !important;
    }
    
    .company-info-grid {
        gap: 20px !important;
    }
    
    .company-card {
        border-radius: 10px !important;
    }
    
    .company-card-header {
        padding: 18px 15px !important;
    }
    
    .company-card-header h3 {
        font-size: 13px !important;
    }
    
    .company-card-body {
        padding: 20px 15px !important;
    }
    
    .info-item {
        margin-bottom: 12px !important;
        padding-bottom: 12px !important;
    }
    
    .info-item strong {
        font-size: 10px !important;
    }
    
    .info-item p {
        font-size: 12px !important;
    }
    
    /* Business Areas Section */
    .business-areas-section {
        padding: 40px 15px !important;
    }
    
    .section-title {
        font-size: 19px !important;
        margin-bottom: 18px !important;
    }
    
    .section-subtitle {
        font-size: 12px !important;
        margin-top: 0 !important;
        margin-bottom: 25px !important;
    }
    
    .business-areas-grid {
        gap: 15px !important;
    }
    
    .business-area-card {
        padding: 20px 15px !important;
        border-radius: 10px !important;
    }
    
    .business-icon {
        width: 50px !important;
        height: 50px !important;
        margin-bottom: 15px !important;
    }
    
    .business-icon i {
        font-size: 24px !important;
    }
    
    .business-title {
        font-size: 15px !important;
        margin-bottom: 10px !important;
    }
    
    .business-description {
        font-size: 12px !important;
    }
    
    /* Core Values Section */
    .core-values-section {
        padding: 40px 15px !important;
    }
    
    .core-values-section .section-title {
        font-size: 18px !important;
        margin-bottom: 25px !important;
    }
    
    .core-values-grid {
        gap: 12px !important;
        margin-bottom: 25px !important;
    }
    
    .value-card {
        padding: 20px 15px !important;
        border-radius: 10px !important;
    }
    
    .value-title {
        font-size: 16px !important;
        margin-bottom: 12px !important;
        padding-bottom: 8px !important;
    }
    
    .value-title::after {
        max-width: 120px !important;
    }
    
    .value-description {
        font-size: 12px !important;
    }
}

/* ===================================
   UX/UI IMPROVEMENTS
   =================================== */

/* Smooth transitions */
.company-card,
.business-area-card,
.value-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

/* Touch-friendly tap targets (minimum 44x44px) */
@media (max-width: 768px) {
    .info-item a {
        display: inline-block;
        padding: 8px 0;
        min-height: 44px;
        line-height: 28px;
    }
}

/* Improved readability */
@media (max-width: 768px) {
    .company-card-body,
    .business-area-card,
    .value-card {
        line-height: 1.6 !important;
    }
}

/* Better spacing for mobile */
@media (max-width: 480px) {
    .company-info-section,
    .business-areas-section,
    .core-values-section {
        margin-bottom: 0 !important;
    }
}

/* Accessibility: Focus states */
.company-card:focus-within,
.business-area-card:focus-within,
.value-card:focus-within {
    outline: 2px solid #159611;
    outline-offset: 2px;
}

/* Loading optimization */
@media (max-width: 768px) {
    .business-icon,
    .value-card {
        will-change: transform;
    }
}

/* Prevent text overflow */
@media (max-width: 480px) {
    .company-card-header h3,
    .business-title,
    .value-title {
        word-wrap: break-word;
        overflow-wrap: break-word;
        hyphens: auto;
    }
    
    /* Fix title overlap */
    .section-title {
        line-height: 1.4 !important;
        padding-bottom: 10px !important;
    }
    
    .section-subtitle {
        line-height: 1.6 !important;
        padding-top: 5px !important;
    }
}

/* Additional spacing fix for all screen sizes */
.business-areas-section .section-title {
    position: relative;
    z-index: 1;
}

.business-areas-section .section-subtitle {
    position: relative;
    z-index: 1;
    clear: both;
}