/* Global Settings */
body { 
    margin: 0; 
    font-family: system-ui, -apple-system, sans-serif; 
    background: #f2f4f7; 
}

/* Header/Top Section */
.top { 
    background: #ffffff; 
    padding: 20px; 
    border-bottom: 1px solid #e5e7eb; 
    text-align: center; 
}

.top h1 { 
    margin: 0; 
    font-size: 24px; 
    color: #111827; 
}

.top p { 
    margin: 10px 0; 
    color: #4b5563; 
    font-size: 16px; 
}

/* Button Styling */
.download { 
    display: inline-block; 
    padding: 12px 24px; 
    background: #2563eb; 
    color: #fff; 
    text-decoration: none; 
    border-radius: 6px; 
    font-weight: 600; 
    margin-top: 10px; 
    transition: 0.3s; 
}

.download:hover { 
    background: #1d4ed8; 
}

/* PDF Viewer */
.viewer { 
    width: 100%; 
    height: 80vh; 
    background: #333; 
}

.viewer iframe { 
    width: 100%; 
    height: 100%; 
    border: none; 
}

/* Mobile Responsive */
@media(max-width:600px) { 
    .top h1 { font-size: 20px; } 
    .viewer { height: 70vh; } 
}