/* Corporate Internet (국내전용회선) Specific Styles */

/* Floating Contact */
.floating-contact {
    position: fixed;
    right: 20px;
    top: 150px;
    background: #e6007e;
    color: #fff;
    padding: 15px;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 4px 10px rgba(230,0,126,0.3);
    z-index: 1000;
}

.floating-contact a {
    color: #fff;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.floating-contact span {
    font-size: 12px;
}

.floating-contact strong {
    font-size: 14px;
}

/* Banner */
.corporate-banner {
    background: url('https://images.unsplash.com/photo-1544197150-b99a580bb7a8?auto=format&fit=crop&w=1600&q=80') center right/cover no-repeat;
    position: relative;
    height: 320px;
    display: flex;
    align-items: center;
}

.corporate-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to right, rgba(224, 242, 254, 0.95) 45%, rgba(224, 242, 254, 0.45) 100%);
}

.banner-content {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 0 20px;
}

.banner-content h1 {
    font-size: 42px;
    color: #0f172a;
    margin-bottom: 15px;
    font-weight: 800;
}

.banner-content p {
    font-size: 18px;
    color: #334155;
    font-weight: 500;
    max-width: 600px;
    line-height: 1.5;
}

/* Section styling */
.corporate-section {
    padding: 80px 0;
}

.bg-white {
    background-color: #ffffff;
}

.bg-light {
    background-color: #f8fafc;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Intro text */
.intro-lead-text {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* Features (특장점) */
.features-container {
    display: flex;
    gap: 40px;
    margin-top: 50px;
}

.features-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 10px;
}

.features-side h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.features-side p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

.features-grid.grid-col-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 20px;
}

.feature-box {
    background-color: #eaf4f8; /* Soft blue-gray */
    padding: 30px;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.05);
}

.feature-box h3 {
    font-size: 18px;
    color: #0f172a;
    margin-bottom: 15px;
    font-weight: 700;
}

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

.feature-box li {
    font-size: 14px;
    color: #475569;
    line-height: 1.7;
    position: relative;
    padding-left: 12px;
    margin-bottom: 6px;
}

.feature-box li::before {
    content: '·';
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Benefits (기대효과) */
.benefits-container {
    display: flex;
    gap: 40px;
    margin-top: 50px;
}

.benefits-side {
    flex: 1;
}

.benefits-side h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.benefits-side p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

.benefits-grid {
    flex: 2.5;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px 30px;
}

.benefit-item {
    display: flex;
    gap: 20px;
}

.benefit-icon {
    font-size: 32px;
    color: #0f172a;
    width: 50px;
    height: 50px;
    background: #f1f5f9;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.benefit-text h3 {
    font-size: 18px;
    color: #e6007e; /* Pink highlight */
    margin-bottom: 10px;
    font-weight: 700;
}

.benefit-text p {
    font-size: 14px;
    color: #475569;
    line-height: 1.7;
    position: relative;
    padding-left: 12px;
}

.benefit-text p::before {
    content: '·';
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* Recommendations (추천고객) */
.recommend-section {
    padding: 80px 0;
}

.recommend-section h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.recommend-section .section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.recommend-section .section-header-row p {
    font-size: 15px;
    color: #64748b;
    margin: 0;
}

.recommend-circle-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.recommend-circle-card {
    text-align: center;
    background: #fff;
    padding: 30px 20px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
    transition: transform 0.3s ease;
}

.recommend-circle-card:hover {
    transform: translateY(-5px);
}

.recommend-circle-image {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.recommend-circle-card h3 {
    font-size: 18px;
    color: #0f172a;
    margin-bottom: 12px;
    font-weight: 700;
}

.recommend-circle-card p {
    font-size: 14px;
    color: #475569;
    line-height: 1.6;
}

/* Key Clients (대표고객) */
.clients-section {
    padding: 60px 0 80px 0;
    border-top: 1px solid #f1f5f9;
}

.clients-wrapper {
    display: flex;
    align-items: center;
    gap: 40px;
}

.clients-side {
    flex: 1;
}

.clients-side h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 10px;
    font-weight: 800;
}

.clients-side p {
    font-size: 15px;
    color: #64748b;
    margin: 0;
}

.clients-logos-box {
    flex: 2.5;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.client-logo-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 20px;
    color: #334155;
}

.client-logo-item.lg-cns {
    color: #bf0a30; /* red */
}

.client-logo-item.woori {
    color: #0064a3; /* blue */
}

.client-logo-item.naver {
    color: #03cf5d; /* green */
}

/* Functions (주요기능) */
.functions-section {
    padding: 80px 0;
}

.functions-section h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.functions-section .section-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 40px;
}

.functions-section .section-header-row p {
    font-size: 15px;
    color: #64748b;
    margin: 0;
}

.functions-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.function-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.function-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.function-icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #fdf2f8; /* Soft pink bg */
    border: 1px solid #fbcfe8;
    color: #db2777; /* Deep pink icon */
    font-size: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
}

.function-card p {
    font-size: 15px;
    color: #0f172a;
    line-height: 1.6;
    font-weight: 600;
    margin: 0;
}

/* Service Diagram (서비스 구성도) */
.diagram-wrapper {
    display: flex;
    gap: 40px;
    margin-top: 50px;
}

.diagram-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 10px;
}

.diagram-side h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.diagram-side p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

.diagram-content-box {
    flex: 2.5;
    min-width: 0; /* Prevents flex items from overflowing */
}

.diagram-scroll-container {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 15px;
    border-radius: 12px;
}

.diagram-board {
    min-width: 740px;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 30px 15px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

/* Symmetrical site columns */
.site-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.devices-row {
    display: flex;
    gap: 8px;
}

.device-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #f1f5f9;
    border: 1px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #475569;
}

.network-node {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.network-node i {
    font-size: 18px;
    color: #334155;
    margin-bottom: 3px;
}

.network-node-label {
    font-size: 10px;
    font-weight: 700;
    color: #64748b;
    text-align: center;
    white-space: nowrap;
}

/* Transmitting node outside */
.tx-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.tx-box {
    width: 50px;
    height: 65px;
    border-radius: 6px;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.tx-box i {
    font-size: 20px;
    color: #475569;
}

.tx-label {
    font-size: 10px;
    font-weight: 700;
    color: #64748b;
    text-align: center;
    white-space: nowrap;
}

/* Backbone Core */
.backbone-container {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    padding: 20px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
    margin: 0 8px;
    padding-top: 35px;
}

.backbone-uplus-badge {
    position: absolute;
    top: -22px;
    left: calc(50% - 22px);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #e6007e;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 14px;
    box-shadow: 0 4px 10px rgba(230,0,126,0.3);
}

.backbone-cloud {
    width: 110px;
    height: 90px;
    border-radius: 50%;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.backbone-cloud i {
    font-size: 30px;
    color: #334155;
    margin-bottom: 4px;
}

.backbone-cloud-label {
    font-size: 11px;
    font-weight: 800;
    color: #0f172a;
    text-align: center;
}

/* Connection Lines */
.horizontal-line {
    height: 2px;
    flex: 1;
    min-width: 15px;
    background-image: linear-gradient(to right, #e6007e 50%, transparent 50%);
    background-size: 6px 2px;
    background-repeat: repeat-x;
    animation: flow-left-to-right 1s linear infinite;
}

.vertical-line {
    width: 2px;
    height: 15px;
    background-image: linear-gradient(to bottom, #e6007e 50%, transparent 50%);
    background-size: 2px 6px;
    background-repeat: repeat-y;
    animation: flow-top-to-bottom 1s linear infinite;
}

@keyframes flow-left-to-right {
    from { background-position: 0 0; }
    to { background-position: 6px 0; }
}

@keyframes flow-top-to-bottom {
    from { background-position: 0 0; }
    to { background-position: 0 6px; }
}

/* Pricing (이용요금) */
.pricing-wrapper {
    display: flex;
    gap: 40px;
    margin-top: 50px;
}

.pricing-side {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 10px;
}

.pricing-side h2 {
    font-size: 28px;
    color: #0f172a;
    text-align: left;
    margin-bottom: 15px;
    font-weight: 800;
}

.pricing-side p {
    font-size: 15px;
    color: #64748b;
    line-height: 1.6;
}

.pricing-content-box {
    flex: 2.5;
    background: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    padding: 30px;
    display: flex;
    align-items: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
}

.pricing-info-text {
    font-size: 16px;
    color: #334155;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
}

.pricing-info-text::before {
    content: "·";
    font-weight: bold;
    font-size: 28px;
    color: #e6007e;
    margin-right: 8px;
    line-height: 1;
}

/* Responsive Overrides */
@media (max-width: 992px) {
    .features-container, .benefits-container, .clients-wrapper, .diagram-wrapper, .pricing-wrapper {
        flex-direction: column;
        gap: 35px;
    }
    
    .features-side, .benefits-side, .clients-side, .diagram-side, .pricing-side {
        text-align: center;
    }
    
    .features-side h2, .benefits-side h2, .clients-side h2, .diagram-side h2, .pricing-side h2 {
        text-align: center;
    }
    
    .recommend-circle-grid, .functions-grid-3 {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .recommend-section .section-header-row, .functions-section .section-header-row {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 15px;
    }
    
    .clients-logos-box {
        flex-direction: column;
        gap: 20px;
    }

    .features-grid.grid-col-4 {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 600px) {
    .features-grid-2x2, .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .banner-content h1 {
        font-size: 32px;
    }
    
    .banner-content p {
        font-size: 15px;
    }
}