.pdf-viewer {
    width: 100%;
    margin: 20px 0;
    background: #f3f4f6;
    border: 1px solid #ddd;
    overflow: hidden;
    box-sizing: border-box;
}

.pdf-toolbar {
    min-height: 50px;
    padding: 8px 15px;

    display: flex;
    align-items: center;
    justify-content: center;

    gap: 10px;

    background: #323639;
    color: #fff;

    box-sizing: border-box;
}

.pdf-toolbar button {
    height: 32px;
    padding: 0 12px;

    border: 0;
    border-radius: 4px;

    background: #4a4d50;
    color: #fff;

    cursor: pointer;
}

.pdf-toolbar button:hover {
    background: #626568;
}

.pdf-toolbar button:disabled {
    opacity: .4;
    cursor: default;
}

.pdf-page-info {
    display: flex;
    align-items: center;
    gap: 5px;
}

.pdf-page-input {
    width: 48px;
    height: 30px;

    padding: 0;

    border: 0;
    border-radius: 3px;

    text-align: center;
}

.pdf-divider {
    width: 1px;
    height: 24px;
    margin: 0 4px;

    background:
        rgba(255,255,255,.3);
}

.pdf-stage {
    width: 100%;
    height: 80vh;

    padding: 20px;

    overflow: auto;

    display: flex;
    justify-content: center;
    align-items: flex-start;

    box-sizing: border-box;
}

.pdf-page-wrap {
    background: #fff;
    line-height: 0;

    box-shadow:
        0 2px 10px
        rgba(0,0,0,.18);
}

.pdf-page-canvas {
    display: block;
    max-width: none !important;
}

.pdf-error {
    padding: 40px 20px;
    text-align: center;
    color: #999;
    background: #f8f8f8;
}

@media (max-width: 768px) {

    .pdf-toolbar {
        padding: 8px 5px;
        gap: 5px;
    }

    .pdf-toolbar button {
        padding: 0 7px;
    }

    .pdf-stage {
        height: 70vh;
        padding: 8px;
    }

    .pdf-page-input {
        width: 40px;
    }
}