body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f3f4f6;
}

.page {
    height: 100vh;
    padding: 12px;
    overflow: hidden;
}

h1 {
    margin: 0 0 12px;
    text-align: center;
    font-size: 22px;
}

#pdf-viewer {
    height: calc(100vh - 58px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    background: #d1d5db;
    border-radius: 10px;
    padding: 12px;
}

.pdf-page {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 12px;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}