/* PDF全屏预览样式 */
.pdf-viewer {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    z-index: 9999;
    overflow: hidden;
}

/* 全屏时的样式 */
.pdf-viewer:fullscreen,
.pdf-viewer:-webkit-full-screen,
.pdf-viewer:-moz-full-screen,
.pdf-viewer:-ms-fullscreen {
    width: 100%;
    height: 100%;
}

.pdf-controls {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50px;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 10;
}

.page-info {
    font-size: 16px;
}

.exit-fullscreen {
    cursor: pointer;
    padding: 5px 15px;
    background-color: rgba(255,255,255,.1);
    border-radius: 4px;
}

#pdf-canvas {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
    max-width: 100%;
    max-height: 100%;
}

/* 提示信息 */
.pdf-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 14px;
    z-index: 10;
}