/* Main container */
.spv-secure-pdf-viewer {
    margin: 2em 0;
    border: 1px solid #ccc;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    padding: 10px;
    max-width: 100%;
    background: #f9f9f9;
    box-sizing: border-box;

    /* Disable text selection */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

/* PDF header */
.spv-pdf-header {
    padding: 15px 20px;
    background: #f7f7f7;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 10px;
    font-weight: 600;
    color: #222;
}

.spv-pdf-header h3 {
    margin: 0;
    font-size: 1.1em;
    color: #333;
}

/* Viewer wrapper */
.spv-pdf-viewer-wrapper {
    background: #fafafa;
    text-align: center;
    padding: 10px;
    position: relative;
    overflow: auto;
    background: #fff;
    border: 1px solid #ddd;
}

/* Canvas styling */
.spv-pdf-viewer-wrapper canvas {
    max-width: 100%;
    box-shadow: 0 0 5px rgba(0,0,0,0.1);
    display: block;
    margin: 0 auto;
    background: white;
    user-select: none;
    -webkit-user-drag: none;
}

/* Error message */
.spv-pdf-error {
    padding: 20px;
    background: #fff8f8;
    border: 1px solid #ffdddd;
    color: #cc0000;
    text-align: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .spv-pdf-viewer-wrapper {
        padding: 10px;
    }
}