body {
    background-color: #000 !important;
    color: #fff !important;
    margin: 0;
    padding: 0;
}

/* Container styling */
.apv-container {
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* PDF wrapper */
.pdf-wrapper {
    display: inline-block;
    position: relative;
    width: 80%;
    max-width: 900px;
}

/* Canvas */
#pdf-canvas {
    width: 100%;
    border: none;
    background: #000;
    display: block;
    position: relative;
    z-index: 1;
}

/* Black fade overlay */
.fade-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    opacity: 0;
    transition: opacity 1s ease-in-out;
    z-index: 2;
}

.fade-overlay.active {
    opacity: 1;
}

/* Controls */
.controls {
    margin-top: 20px;
}

.controls button {
    padding: 10px 15px;
    margin: 5px;
    font-size: 16px;
    cursor: pointer;
    background: #222;
    color: #fff;
    border: 1px solid #444;
    border-radius: 4px;
}

.controls input[type="number"] {
    width: 60px;
    padding: 5px;
    background: #222;
    color: #fff;
    border: 1px solid #444;
    border-radius: 4px;
}