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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #E0F7FA 0%, #B0E0E6 50%, #FFFFFF 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #87CEEB 0%, #B0E0E6 50%, #FFFFFF 100%);
    color: #2C5F7C;
    padding: 40px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.subtitle {
    font-size: 1.2em;
    opacity: 0.9;
}

.documents-nav {
    padding: 40px;
}

.documents-nav h2 {
    color: #5BA3D0;
    margin-bottom: 30px;
    font-size: 1.8em;
    border-bottom: 2px solid #AED9E8;
    padding-bottom: 10px;
}

.documents-list {
    list-style: none;
}

.documents-list li {
    margin-bottom: 15px;
}

.documents-list a {
    display: block;
    padding: 15px 20px;
    background: #F0F9FF;
    border-left: 4px solid #87CEEB;
    text-decoration: none;
    color: #2C5F7C;
    border-radius: 4px;
    transition: all 0.3s ease;
    font-size: 1.1em;
}

.documents-list a:hover {
    background: #AED9E8;
    color: #1A4A6B;
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(135, 206, 235, 0.3);
}

footer {
    background: #F0F9FF;
    padding: 20px;
    text-align: center;
    color: #5BA3D0;
    border-top: 1px solid #AED9E8;
}

/* Document page styles */
.document-content {
    padding: 40px;
}

.document-content h1 {
    color: #5BA3D0;
    margin-bottom: 30px;
    font-size: 2em;
    border-bottom: 3px solid #AED9E8;
    padding-bottom: 15px;
}

.document-content h2 {
    color: #2C5F7C;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.document-content h3 {
    color: #555;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.document-content p {
    margin-bottom: 15px;
    text-align: justify;
}

.document-content ul, .document-content ol {
    margin-left: 30px;
    margin-bottom: 15px;
}

.document-content li {
    margin-bottom: 8px;
}

.back-link {
    display: inline-block;
    margin-bottom: 20px;
    padding: 10px 20px;
    background: #87CEEB;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s ease;
}

.back-link:hover {
    background: #5BA3D0;
    color: white;
}

.last-updated {
    color: #999;
    font-size: 0.9em;
    font-style: italic;
    margin-bottom: 20px;
}

.document-content a {
    color: #5BA3D0;
    text-decoration: none;
}

.document-content a:hover {
    color: #2C5F7C;
    text-decoration: underline;
}

.document-content .back-link {
    color: white !important;
}

.document-content .back-link:hover {
    color: white !important;
}

.document-content hr {
    border: none;
    border-top: 1px solid #AED9E8;
    margin: 30px 0;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }
    
    .documents-nav, .document-content {
        padding: 20px;
    }
    
    .document-content h1 {
        font-size: 1.5em;
    }
}