body {
    margin: 0;
    background: #f2f3f5;
    font-family: Arial, sans-serif;
}

/* Toolbar */
.pdf-toolbar {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border-radius: 40px;
    padding: 10px 18px;
    display: flex;
    gap: 20px;
    align-items: center;
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
    z-index: 9999;
}

/* Page control box */
.page-box {
    background: #f8f9fa;
    padding: 6px 12px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Zoom control box */
.zoom-box {
    background: #f8f9fa;
    padding: 6px 12px;
    border-radius: 30px;
    display: flex;
    gap: 8px;
}

.round-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
    cursor: pointer;
    font-size: 18px;
}

#pdfContainer {
    padding-top: 100px;
    display: flex;
    justify-content: center;
}

canvas {
    background: white;
    box-shadow: 0 0 30px rgba(0,0,0,0.3);
}