/* ==============================================
   부가서비스 랜딩 페이지 공통 CSS
   - server-landing.css 스타일 확장
   - 10점 만점 전환율 최적화 디자인
============================================== */

/* ===== Hero Section ===== */
.addservice-hero {
    padding: 140px 0 100px;
    background: linear-gradient(180deg, #f8fafb 0%, #fff 100%);
    position: relative;
    overflow: hidden;
}

.addservice-hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 170, 0.08) 0%, transparent 70%);
    z-index: 0;
}

.addservice-hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: center;
}

.addservice-hero .hero-content {
    max-width: 640px;
}

.addservice-hero .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.12) 0%, rgba(0, 180, 216, 0.12) 100%);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.addservice-hero .hero-badge i {
    font-size: 14px;
}

.addservice-hero .hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.25;
    color: #191f28;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.addservice-hero .hero-title .gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.addservice-hero .hero-desc {
    font-size: 18px;
    line-height: 1.7;
    color: #4e5968;
    margin-bottom: 32px;
}

.addservice-hero .hero-desc strong {
    color: #191f28;
    font-weight: 600;
}

/* Hero Price Card */
.hero-price-card {
    background: #fff;
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e8eb;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-price-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, #00B4D8 100%);
}

.hero-price-card .price-label {
    font-size: 14px;
    color: #8b95a1;
    margin-bottom: 8px;
}

.hero-price-card .price-amount {
    margin-bottom: 8px;
}

.hero-price-card .price-amount .number {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary);
}

.hero-price-card .price-amount .unit {
    font-size: 18px;
    color: #4e5968;
    margin-left: 4px;
}

.hero-price-card .price-note {
    font-size: 14px;
    color: #8b95a1;
    margin-bottom: 24px;
}

.hero-price-card .price-features {
    text-align: left;
    margin-bottom: 24px;
    padding: 20px;
    background: #f8fafb;
    border-radius: 14px;
}

.hero-price-card .price-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    font-size: 14px;
    color: #4e5968;
    border-bottom: 1px solid #e5e8eb;
}

.hero-price-card .price-features li:last-child {
    border-bottom: none;
}

.hero-price-card .price-features li i {
    color: var(--primary);
    font-size: 14px;
}

.hero-price-card .price-cta {
    display: block;
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    color: #fff;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 700;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.hero-price-card .price-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 170, 0.3);
}

/* Hero Buttons */
.hero-buttons {
    display: flex;
    gap: 14px;
    margin-bottom: 32px;
}

.btn-primary-lg {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 36px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    color: #fff;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-primary-lg:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 212, 170, 0.3);
}

.btn-secondary-lg {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 36px;
    background: #fff;
    color: #191f28;
    border: 1px solid #e5e8eb;
    border-radius: 14px;
    font-size: 17px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary-lg:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Hero Trust */
.hero-trust-badges {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.hero-trust-badges .trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #6b7684;
}

.hero-trust-badges .trust-item i {
    color: var(--primary);
}

/* ===== Problems Section ===== */
.problems-section {
    padding: 100px 0;
    background: #fff;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.problem-card {
    padding: 32px;
    background: #fff;
    border: 1px solid #e5e8eb;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

.problem-card:hover {
    border-color: #ff6b6b;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.1);
}

.problem-card .problem-icon {
    width: 64px;
    height: 64px;
    background: rgba(255, 107, 107, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.problem-card .problem-icon i {
    font-size: 28px;
    color: #ff6b6b;
}

.problem-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 12px;
}

.problem-card p {
    font-size: 14px;
    color: #6b7684;
    line-height: 1.6;
}

/* ===== Solution Section ===== */
.solution-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #191f28 0%, #2d3748 100%);
}

.solution-section .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.solution-section .section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: rgba(0, 212, 170, 0.15);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
}

.solution-section .section-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
}

.solution-section .section-title strong {
    color: var(--primary);
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.solution-card {
    padding: 36px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.solution-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-8px);
}

.solution-card .solution-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.solution-card .solution-icon i {
    font-size: 26px;
    color: #fff;
}

.solution-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.solution-card p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.6;
}

/* ===== Specs Section ===== */
.specs-section {
    padding: 100px 0;
    background: #fff;
}

.specs-table-wrapper {
    max-width: 900px;
    margin: 0 auto;
    overflow-x: auto;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.specs-table th,
.specs-table td {
    padding: 20px 24px;
    text-align: left;
    border-bottom: 1px solid #e5e8eb;
}

.specs-table th {
    background: #f8fafb;
    font-size: 14px;
    font-weight: 600;
    color: #4e5968;
}

.specs-table td {
    font-size: 15px;
    color: #191f28;
}

.specs-table td.highlight {
    color: var(--primary);
    font-weight: 600;
}

.specs-table tbody tr:hover {
    background: #f8fafb;
}

/* ===== Pricing Section ===== */
.pricing-section {
    padding: 100px 0;
    background: #f8fafb;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-card {
    background: #fff;
    border-radius: 24px;
    padding: 40px;
    border: 1px solid #e5e8eb;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    border-color: var(--primary);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
    transform: translateY(-8px);
}

.pricing-card.featured {
    border: 2px solid var(--primary);
}

/* featured 카드 배지는 .plan-badge로 대체 */

.pricing-card .plan-name {
    font-size: 22px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 8px;
}

.pricing-card .plan-desc {
    font-size: 14px;
    color: #8b95a1;
    margin-bottom: 24px;
}

.pricing-card .plan-price {
    margin-bottom: 24px;
}

.pricing-card .plan-price .amount {
    font-size: 42px;
    font-weight: 800;
    color: var(--primary);
}

.pricing-card .plan-price .currency {
    display: block;
    font-size: 14px;
    color: #8b95a1;
    margin-bottom: 4px;
}

.pricing-card .plan-price .unit {
    font-size: 16px;
    color: #6b7684;
}

.pricing-card .plan-monthly {
    font-size: 15px;
    color: #6b7684;
    margin-bottom: 24px;
    padding: 12px;
    background: #f8fafb;
    border-radius: 8px;
}

.pricing-card .plan-monthly strong {
    color: var(--primary);
    font-weight: 700;
}

.pricing-card .plan-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 20px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    border-radius: 100px;
}

.pricing-card.featured .plan-badge + .plan-name {
    margin-top: 8px;
}

/* Plan features icon variants */
.pricing-card .plan-features li i.fa-info-circle {
    color: var(--text-light);
}

.pricing-card .plan-features .text-light {
    color: #8b95a1 !important;
}

.pricing-card .plan-features .text-primary {
    color: var(--primary) !important;
}

.pricing-card .plan-features i.text-primary {
    color: var(--primary) !important;
}

.pricing-card .plan-features {
    text-align: left;
    margin-bottom: 32px;
}

.pricing-card .plan-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: #4e5968;
    border-bottom: 1px solid #f0f2f5;
}

.pricing-card .plan-features li:last-child {
    border-bottom: none;
}

.pricing-card .plan-features li i {
    color: var(--primary);
    font-size: 14px;
}

.pricing-card .plan-cta {
    display: block;
    width: 100%;
    padding: 16px;
    border-radius: 14px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.pricing-card .plan-cta.primary {
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    color: #fff;
}

.pricing-card .plan-cta.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 212, 170, 0.3);
}

.pricing-card .plan-cta.secondary {
    background: #f8fafb;
    color: #191f28;
    border: 1px solid #e5e8eb;
}

.pricing-card .plan-cta.secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ===== Process Section ===== */
.process-section {
    padding: 100px 0;
    background: #fff;
}

.process-steps {
    display: flex;
    justify-content: center;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.process-step {
    flex: 1;
    text-align: center;
    position: relative;
}

.process-step::after {
    content: '';
    position: absolute;
    top: 35px;
    right: -15px;
    width: 30px;
    height: 2px;
    background: #e5e8eb;
}

.process-step:last-child::after {
    display: none;
}

.process-step .step-number {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    font-weight: 800;
    color: #fff;
}

.process-step h4 {
    font-size: 17px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 8px;
}

.process-step p {
    font-size: 14px;
    color: #6b7684;
    line-height: 1.5;
}

/* ===== Use Cases Section ===== */
.usecases-section {
    padding: 100px 0;
    background: #f8fafb;
}

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

.usecase-card {
    padding: 32px;
    background: #fff;
    border-radius: 20px;
    text-align: center;
    border: 1px solid #e5e8eb;
    transition: all 0.3s ease;
}

.usecase-card:hover {
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.usecase-card .usecase-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.1) 0%, rgba(0, 180, 216, 0.1) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.usecase-card .usecase-icon i {
    font-size: 28px;
    color: var(--primary);
}

.usecase-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 10px;
}

.usecase-card p {
    font-size: 14px;
    color: #6b7684;
    line-height: 1.5;
}

/* ===== Related Services Section ===== */
.related-section {
    padding: 80px 0;
    background: #fff;
}

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

.related-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: #f8fafb;
    border-radius: 16px;
    transition: all 0.3s ease;
}

.related-card:hover {
    background: #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.related-card .related-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.related-card .related-icon i {
    font-size: 20px;
    color: #fff;
}

.related-card .related-content h4 {
    font-size: 15px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 4px;
}

.related-card .related-content p {
    font-size: 13px;
    color: #8b95a1;
}

/* ===== Section Common ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.12) 0%, rgba(0, 180, 216, 0.12) 100%);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: #191f28;
    line-height: 1.3;
}

.section-title strong {
    color: var(--primary);
}

.section-desc {
    font-size: 17px;
    color: #6b7684;
    margin-top: 16px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Floating CTA ===== */
.floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.floating-cta.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    color: #fff;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    box-shadow: 0 8px 30px rgba(0, 212, 170, 0.4);
    transition: all 0.3s ease;
}

.floating-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 212, 170, 0.5);
}

.floating-btn.phone {
    background: #191f28;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.floating-btn.phone:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .addservice-hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .addservice-hero .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-trust-badges {
        justify-content: center;
    }

    .hero-price-card {
        max-width: 400px;
        margin: 0 auto;
    }

    .usecases-grid,
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .problems-grid,
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        flex-wrap: wrap;
    }

    .process-step {
        flex: 0 0 calc(50% - 15px);
    }

    .process-step::after {
        display: none;
    }
}

@media (max-width: 768px) {
    .addservice-hero {
        padding: 120px 0 80px;
    }

    .addservice-hero .hero-title {
        font-size: 32px;
    }

    .addservice-hero .hero-desc {
        font-size: 16px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary-lg,
    .btn-secondary-lg {
        width: 100%;
        justify-content: center;
    }

    .problems-grid,
    .solution-grid,
    .usecases-grid,
    .related-grid {
        grid-template-columns: 1fr;
    }

    .process-step {
        flex: 0 0 100%;
    }

    .section-title {
        font-size: 28px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .floating-cta {
        right: 20px;
        bottom: 20px;
    }

    .floating-btn span {
        display: none;
    }

    .floating-btn {
        padding: 16px;
        border-radius: 50%;
    }
}

@media (max-width: 480px) {
    .addservice-hero .hero-title {
        font-size: 28px;
    }

    .hero-price-card {
        padding: 30px 24px;
    }

    .hero-price-card .price-amount .number {
        font-size: 36px;
    }
}

/* ===== Software Pricing Category ===== */
.pricing-category {
    margin-bottom: 60px;
}

.pricing-category-title {
    font-size: 28px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 8px;
    text-align: center;
}

.pricing-category-desc {
    font-size: 16px;
    color: #6b7684;
    text-align: center;
    margin-bottom: 40px;
}

/* Specs Note */
.specs-note {
    max-width: 800px;
    margin: 40px auto 0;
    padding: 24px;
    background: #f8fafb;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}

.specs-note h4 {
    font-size: 16px;
    font-weight: 700;
    color: #191f28;
    margin-bottom: 12px;
}

.specs-note ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.specs-note ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    font-size: 14px;
    color: #4e5968;
    line-height: 1.6;
}

.specs-note ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

.specs-note ul li:last-child {
    margin-bottom: 0;
}

/* Utility: margin-bottom 60px */
.mb-60 {
    margin-bottom: 60px;
}

/* ==============================================
   Architecture Diagram Section
   - 전문적인 서비스 구성도 시각화
============================================== */
.architecture-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #191f28 0%, #2d3748 100%);
}

.architecture-section .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.architecture-section .section-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(0, 212, 170, 0.15);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
}

.architecture-section .section-title {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
}

.architecture-section .section-title strong {
    background: linear-gradient(135deg, var(--primary) 0%, #00B4D8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.architecture-section .section-subtitle {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

/* CDN Architecture Diagram */
.cdn-architecture {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.cdn-flow-diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.cdn-node {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    min-width: 180px;
    transition: all 0.3s ease;
}

.cdn-node:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.cdn-node.origin {
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(59, 130, 246, 0.1);
}

.cdn-node.cdn-center {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.2) 0%, rgba(0, 180, 216, 0.2) 100%);
    min-width: 220px;
    padding: 40px;
}

.cdn-node.edge {
    border-color: rgba(168, 85, 247, 0.5);
    background: rgba(168, 85, 247, 0.1);
}

.cdn-node.user {
    border-color: rgba(34, 197, 94, 0.5);
    background: rgba(34, 197, 94, 0.1);
}

.cdn-node-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cdn-node-icon i {
    font-size: 28px;
    color: #fff;
}

.cdn-node.origin .cdn-node-icon i { color: #3b82f6; }
.cdn-node.cdn-center .cdn-node-icon i { color: var(--primary); }
.cdn-node.edge .cdn-node-icon i { color: #a855f7; }
.cdn-node.user .cdn-node-icon i { color: #22c55e; }

.cdn-node h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.cdn-node p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.5;
}

.cdn-flow-arrow {
    width: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cdn-flow-arrow i {
    font-size: 24px;
    color: var(--primary);
    animation: flowPulse 2s ease-in-out infinite;
}

@keyframes flowPulse {
    0%, 100% { opacity: 0.5; transform: translateX(0); }
    50% { opacity: 1; transform: translateX(5px); }
}

/* Edge Locations Grid */
.cdn-edge-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.cdn-edge-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.cdn-edge-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.cdn-edge-item .edge-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.2) 0%, rgba(0, 180, 216, 0.2) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cdn-edge-item .edge-icon i {
    font-size: 20px;
    color: var(--primary);
}

.cdn-edge-item h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}

.cdn-edge-item p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* Load Balancing Architecture */
.lb-architecture {
    max-width: 900px;
    margin: 0 auto 60px;
}

.lb-flow-diagram {
    position: relative;
}

.lb-traffic-source {
    text-align: center;
    margin-bottom: 30px;
}

.lb-traffic-box {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    padding: 20px 40px;
}

.lb-traffic-box i {
    font-size: 28px;
    color: #3b82f6;
}

.lb-traffic-box span {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.lb-arrow-down {
    text-align: center;
    padding: 15px 0;
}

.lb-arrow-down i {
    font-size: 28px;
    color: var(--primary);
    animation: arrowBounce 1.5s ease-in-out infinite;
}

@keyframes arrowBounce {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(8px); opacity: 1; }
}

.lb-balancer {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.2) 0%, rgba(0, 180, 216, 0.2) 100%);
    border: 2px solid var(--primary);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    margin-bottom: 30px;
}

.lb-balancer-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: rgba(0, 212, 170, 0.2);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lb-balancer-icon i {
    font-size: 36px;
    color: var(--primary);
}

.lb-balancer h3 {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
}

.lb-balancer p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.lb-algorithms {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.lb-algo-tag {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.lb-servers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.lb-server-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.lb-server-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.lb-server-card.active {
    border-color: rgba(34, 197, 94, 0.5);
    background: rgba(34, 197, 94, 0.1);
}

.lb-server-card.standby {
    border-color: rgba(234, 179, 8, 0.5);
    background: rgba(234, 179, 8, 0.1);
}

.lb-server-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lb-server-icon i {
    font-size: 22px;
    color: #fff;
}

.lb-server-card.active .lb-server-icon i { color: #22c55e; }
.lb-server-card.standby .lb-server-icon i { color: #eab308; }

.lb-server-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}

.lb-server-card p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 10px;
}

.lb-server-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
}

.lb-server-status.online {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.lb-server-status.standby {
    background: rgba(234, 179, 8, 0.2);
    color: #eab308;
}

.lb-server-status i {
    font-size: 8px;
}

/* Backup Architecture */
.backup-architecture {
    max-width: 1000px;
    margin: 0 auto 60px;
}

.backup-flow {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0;
}

.backup-zone {
    flex: 1;
    max-width: 280px;
    padding: 30px;
    border-radius: 20px;
    text-align: center;
}

.backup-zone.source {
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.backup-zone.transfer {
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.15) 0%, rgba(0, 180, 216, 0.15) 100%);
    border: 2px solid var(--primary);
}

.backup-zone.storage {
    background: rgba(168, 85, 247, 0.1);
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.backup-zone-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.backup-zone-icon i {
    font-size: 32px;
}

.backup-zone.source .backup-zone-icon i { color: #3b82f6; }
.backup-zone.transfer .backup-zone-icon i { color: var(--primary); }
.backup-zone.storage .backup-zone-icon i { color: #a855f7; }

.backup-zone h4 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.backup-zone p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.backup-zone ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.backup-zone ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.backup-zone ul li i {
    font-size: 10px;
    color: var(--primary);
}

.backup-flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
}

.backup-flow-arrow i {
    font-size: 28px;
    color: var(--primary);
    animation: flowPulse 2s ease-in-out infinite;
}

/* Protection Features */
.protection-features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.protection-feature {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
}

.protection-feature:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.protection-feature .feature-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.2) 0%, rgba(0, 180, 216, 0.2) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.protection-feature .feature-icon i {
    font-size: 22px;
    color: var(--primary);
}

.protection-feature h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 6px;
}

.protection-feature p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

/* HA (High Availability) Architecture */
.ha-architecture {
    max-width: 900px;
    margin: 0 auto 60px;
}

.ha-cluster {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 40px;
}

.ha-node {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    min-width: 200px;
    position: relative;
    transition: all 0.3s ease;
}

.ha-node:hover {
    transform: translateY(-5px);
}

.ha-node.primary {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.15) 0%, rgba(0, 180, 216, 0.15) 100%);
}

.ha-node.secondary {
    border-color: rgba(168, 85, 247, 0.5);
    background: rgba(168, 85, 247, 0.1);
}

.ha-node-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.ha-node.primary .ha-node-badge {
    background: var(--primary);
    color: #fff;
}

.ha-node.secondary .ha-node-badge {
    background: #a855f7;
    color: #fff;
}

.ha-node-icon {
    width: 70px;
    height: 70px;
    margin: 16px auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ha-node-icon i {
    font-size: 32px;
}

.ha-node.primary .ha-node-icon i { color: var(--primary); }
.ha-node.secondary .ha-node-icon i { color: #a855f7; }

.ha-node h4 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.ha-node p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
}

.ha-sync-line {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.ha-sync-line i {
    font-size: 20px;
    color: var(--primary);
    animation: syncPulse 2s ease-in-out infinite;
}

.ha-sync-line span {
    font-size: 14px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.8);
}

@keyframes syncPulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* DB Architecture */
.db-architecture {
    max-width: 900px;
    margin: 0 auto 60px;
}

.db-cluster {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.db-tier {
    display: flex;
    align-items: center;
    gap: 30px;
}

.db-tier-label {
    min-width: 120px;
    text-align: right;
}

.db-tier-label span {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
}

.db-tier-nodes {
    flex: 1;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.db-node {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px;
    text-align: center;
    min-width: 160px;
    transition: all 0.3s ease;
}

.db-node:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.db-node.master {
    border-color: var(--primary);
    background: rgba(0, 212, 170, 0.1);
}

.db-node.slave {
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(59, 130, 246, 0.1);
}

.db-node-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.db-node-icon i {
    font-size: 24px;
}

.db-node.master .db-node-icon i { color: var(--primary); }
.db-node.slave .db-node-icon i { color: #3b82f6; }

.db-node h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.db-node p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.db-replication-arrow {
    text-align: center;
    padding: 10px 0;
}

.db-replication-arrow i {
    font-size: 20px;
    color: var(--primary);
}

/* Architecture Stats */
.architecture-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 60px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 20px;
}

.arch-stat-item {
    text-align: center;
}

.arch-stat-value {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.arch-stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive */
@media (max-width: 992px) {
    .cdn-flow-diagram {
        flex-direction: column;
    }

    .cdn-flow-arrow {
        transform: rotate(90deg);
        padding: 10px 0;
    }

    .cdn-edge-grid,
    .protection-features,
    .architecture-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .lb-servers {
        grid-template-columns: 1fr;
    }

    .backup-flow {
        flex-direction: column;
        align-items: center;
    }

    .backup-flow-arrow {
        transform: rotate(90deg);
        padding: 10px 0;
    }

    .ha-cluster {
        flex-direction: column;
        align-items: center;
    }

    .db-tier {
        flex-direction: column;
        text-align: center;
    }

    .db-tier-label {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .architecture-section {
        padding: 80px 0;
    }

    .architecture-section .section-title {
        font-size: 28px;
    }

    .cdn-edge-grid,
    .protection-features,
    .architecture-stats {
        grid-template-columns: 1fr;
    }

    .architecture-stats {
        padding: 24px;
    }

    .arch-stat-value {
        font-size: 28px;
    }
}

/* ==============================================
   DR (Disaster Recovery) Architecture
============================================== */
.dr-architecture {
    max-width: 1000px;
    margin: 0 auto;
}

.dr-flow {
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 0;
}

.dr-site {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    min-width: 280px;
    position: relative;
    transition: all 0.3s ease;
}

.dr-site:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.dr-site.primary {
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(59, 130, 246, 0.1);
}

.dr-site.disaster-recovery {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.15) 0%, rgba(0, 180, 216, 0.15) 100%);
}

.dr-site-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
}

.dr-site.primary .dr-site-badge {
    background: #3b82f6;
    color: #fff;
}

.dr-site.disaster-recovery .dr-site-badge {
    background: var(--primary);
    color: #fff;
}

.dr-site-icon {
    width: 70px;
    height: 70px;
    margin: 16px auto;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dr-site-icon i {
    font-size: 32px;
}

.dr-site.primary .dr-site-icon i { color: #3b82f6; }
.dr-site.disaster-recovery .dr-site-icon i { color: var(--primary); }

.dr-site h4 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.dr-site p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 16px;
}

.dr-site ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.dr-site ul li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 8px;
}

.dr-site ul li i {
    font-size: 6px;
    color: var(--primary);
}

.dr-replication {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    min-width: 120px;
}

.dr-replication-line {
    padding: 20px 0;
}

.dr-replication-line i {
    font-size: 32px;
    color: var(--primary);
    animation: flowPulse 2s ease-in-out infinite;
}

.dr-replication-tags {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dr-replication-tags span {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(0, 212, 170, 0.15);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary);
}

.dr-replication-tags span i {
    font-size: 10px;
}

/* ==============================================
   Vault Backup Architecture
============================================== */
.vault-architecture {
    max-width: 1000px;
    margin: 0 auto;
}

.vault-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 40px;
}

.vault-step {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 24px 20px;
    text-align: center;
    min-width: 140px;
    transition: all 0.3s ease;
}

.vault-step:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-3px);
}

.vault-step.source {
    border-color: rgba(59, 130, 246, 0.5);
    background: rgba(59, 130, 246, 0.1);
}

.vault-step.tape {
    border-color: rgba(168, 85, 247, 0.5);
    background: rgba(168, 85, 247, 0.1);
}

.vault-step.transport {
    border-color: rgba(245, 158, 11, 0.5);
    background: rgba(245, 158, 11, 0.1);
}

.vault-step.vault {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(0, 212, 170, 0.15) 0%, rgba(0, 180, 216, 0.15) 100%);
}

.vault-step-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 12px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vault-step-icon i {
    font-size: 24px;
}

.vault-step.source .vault-step-icon i { color: #3b82f6; }
.vault-step.tape .vault-step-icon i { color: #a855f7; }
.vault-step.transport .vault-step-icon i { color: #f59e0b; }
.vault-step.vault .vault-step-icon i { color: var(--primary); }

.vault-step h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 4px;
}

.vault-step p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.6);
}

.vault-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
}

.vault-arrow i {
    font-size: 20px;
    color: var(--primary);
    animation: flowPulse 2s ease-in-out infinite;
}

.airgap-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 12px;
}

.airgap-line {
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(239, 68, 68, 0.5), transparent);
}

.airgap-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 700;
    color: #ef4444;
}

.airgap-badge i {
    font-size: 16px;
}

/* Responsive for DR and Vault */
@media (max-width: 992px) {
    .dr-flow {
        flex-direction: column;
        align-items: center;
    }

    .dr-replication {
        padding: 10px 0;
    }

    .dr-replication-line i {
        transform: rotate(90deg);
    }

    .vault-flow {
        flex-wrap: wrap;
        gap: 10px;
    }

    .vault-arrow {
        display: none;
    }

    .vault-step {
        flex: 0 0 calc(50% - 10px);
        min-width: auto;
    }
}

@media (max-width: 768px) {
    .dr-site {
        min-width: 100%;
    }

    .vault-step {
        flex: 0 0 100%;
    }

    .airgap-indicator {
        flex-direction: column;
    }

    .airgap-line {
        width: 100%;
        height: 1px;
    }
}