#viewer-view {
    position: relative;
    width: 100%;
    height: calc(100vh - 60px); /* Full height minus header */
    background-color: var(--dark-text); /* Dark background for contrast */
}

#viewer-content {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
}

/* For PDF.js canvas */
#viewer-content canvas {
    max-width: 100%;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

/* For other content (Excel tables, PPTX images) */
#viewer-content .content-wrapper {
    background-color: var(--pure-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    max-width: 90%;
    max-height: 90%;
    overflow: auto;
}

.viewer-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(255, 255, 255, 0.9);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    z-index: 10;
}

.viewer-controls button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--dark-text);
    font-size: 18px;
}
.viewer-controls button:hover { color: var(--primary-sky-blue); }

.viewer-controls #page-count {
    font-size: 14px;
    font-weight: 600;
    color: var(--medium-gray);
}