* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}
.container {
    max-width: 1400px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
}
.header {
    text-align: center;
    margin-bottom: 40px;
}
.header h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(45deg, #3498db, #9b59b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.header p {
    color: #7f8c8d;
    font-size: 1.1rem;
}
.market-share {
    display: flex;
    justify-content: space-around;
    margin: 30px 0;
    padding: 20px;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 15px;
}
.market-item {
    text-align: center;
    transition: transform 0.3s ease;
}
.market-item:hover {
    transform: scale(1.05);
}
.market-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
}
.aws-color { background: linear-gradient(135deg, #FF9900, #FF6600); }
.azure-color { background: linear-gradient(135deg, #0078D4, #106EBE); }
.gcp-color { background: linear-gradient(135deg, #4285F4, #0F9D58); }
.tabs {
    display: flex;
    justify-content: center;
    margin: 30px 0;
    background: #f8f9fa;
    border-radius: 15px;
    padding: 5px;
    flex-wrap: wrap;
}
.tab {
    padding: 15px 25px;
    border: none;
    background: transparent;
    color: #6c757d;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
    margin: 5px;
}
.tab.active {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}
.tab:hover {
    color: #495057;
}
.content-section {
    display: none;
    animation: fadeIn 0.5s ease-in;
}
.content-section.active {
    display: block;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 25px;
    margin-top: 30px;
}
.provider-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    border: 3px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.provider-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    transition: height 0.3s ease;
}
.provider-card.aws::before { background: linear-gradient(90deg, #FF9900, #FF6600); }
.provider-card.azure::before { background: linear-gradient(90deg, #0078D4, #106EBE); }
.provider-card.gcp::before { background: linear-gradient(90deg, #4285F4, #0F9D58); }
.provider-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}
.provider-card:hover::before {
    height: 8px;
}
.provider-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}
.provider-logo {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    margin-right: 15px;
}
.provider-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
}
.feature-list {
    list-style: none;
    padding: 0;
}
.feature-list li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #f1f3f4;
}
.feature-list li:last-child {
    border-bottom: none;
}
.feature-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #28a745;
    margin-right: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
}
.pricing-table {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin: 20px 0;
}
.pricing-header {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 20px;
    text-align: center;
}
.pricing-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    border-bottom: 1px solid #e9ecef;
}
.pricing-cell {
    padding: 15px;
    text-align: center;
    border-right: 1px solid #e9ecef;
}
.pricing-cell:last-child {
    border-right: none;
}
.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}
.pros, .cons {
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.pros {
    border-left: 4px solid #28a745;
}
.cons {
    border-left: 4px solid #dc3545;
}
.pros h4 {
    color: #28a745;
    margin-bottom: 15px;
}
.cons h4 {
    color: #dc3545;
    margin-bottom: 15px;
}
.recommendation-box {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    padding: 30px;
    border-radius: 20px;
    margin: 30px 0;
    text-align: center;
}
.recommendation-title {
    font-size: 1.8rem;
    margin-bottom: 20px;
}
.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.recommendation-item {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}
.vietnam-stats {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 25px;
    border-radius: 15px;
    margin: 20px 0;
}
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.stat-item {
    text-align: center;
    background: rgba(255,255,255,0.1);
    padding: 15px;
    border-radius: 10px;
}
.stat-number {
    font-size: 2rem;
    font-weight: bold;
    display: block;
}
@media (max-width: 768px) {
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    .tabs {
        flex-direction: column;
    }
    .tab {
        width: 100%;
        text-align: center;
    }
    .pricing-row {
        grid-template-columns: 1fr;
    }
    .pros-cons {
        grid-template-columns: 1fr;
    }
    .header h1 {
        font-size: 2rem;
    }
}
.interactive-chart {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    margin: 20px 0;
}
.chart-bars {
    display: flex;
    justify-content: space-around;
    align-items: end;
    height: 200px;
    margin: 20px 0;
}
.bar {
    width: 60px;
    background: linear-gradient(180deg, #667eea, #764ba2);
    border-radius: 5px 5px 0 0;
    display: flex;
    align-items: end;
    justify-content: center;
    color: white;
    font-weight: bold;
    transition: all 0.3s ease;
    cursor: pointer;
}
.bar:hover {
    transform: scale(1.1);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}
.bar-label {
    text-align: center;
    margin-top: 10px;
    font-weight: 600;
    color: #2c3e50;
}