* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    color: white;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.certifications-grid {
    display: grid;
    gap: 30px;
    padding: 40px;
}

.certification-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border-left: 5px solid #4facfe;
}

.certification-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.cert-header {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    margin-bottom: 20px;
}

.cert-image {
    flex-shrink: 0;
}

.cert-image img {
    width: 150px;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.cert-info {
    flex: 1;
}

.cert-title {
    font-size: 1.4em;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 10px;
}

.cert-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cert-organization {
    color: #666;
    font-weight: 500;
}

.cert-date {
    color: #4facfe;
    font-weight: 600;
    font-size: 1.1em;
}

.back-link {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
}

.back-link a {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.back-link a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
    }
    
    .header h1 {
        font-size: 2em;
    }
    
    .certifications-grid {
        padding: 20px;
        gap: 20px;
    }
    
    .certification-card {
        padding: 20px;
    }
    
    .cert-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 20px;
    }
    
    .cert-image img {
        width: 120px;
    }
}