@keyframes pdfSpin {
    to { transform: rotate(360deg); }
}

.pdf-scroll-container {
    overflow: auto;
    background-color: #f0f0f0;
    padding: 16px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pdf-page-wrapper {
    margin: 0 0 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    background-color: #fff;
    line-height: 0;
    flex-shrink: 0;
}

.pdf-spinner-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
    background-color: #f0f0f0;
}

.pdf-spinner-circle {
    width: 48px;
    height: 48px;
    border: 5px solid #e0e0e0;
    border-top: 5px solid #1abc9c;
    border-radius: 50%;
    animation: pdfSpin 0.8s linear infinite;
}

.pdf-toolbar {
    display: flex;
    align-items: center;
    background-color: #fff;
    border-bottom: 1px solid #e0e0e0;
    padding: 4px 8px;
    flex-shrink: 0;
    position: relative;
    min-height: 36px;
}

.pdf-toolbar-left {
    display: flex;
    align-items: center;
    gap: 2px;
}

.pdf-toolbar-center {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2px;
}

.pdf-toolbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
}

.pdf-toolbar-page-input {
    width: 36px;
    text-align: center;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 2px 4px;
    font-size: 13px;
}

.pdf-toolbar-page-total {
    font-size: 13px;
    color: #555;
    white-space: nowrap;
}

.pdf-toolbar-zoom-label {
    font-size: 13px;
    color: #555;
    min-width: 42px;
    text-align: center;
}

.pdf-icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: #555;
    padding: 4px 6px;
    border-radius: 4px;
    display: flex;
    align-items: center;
}

.pdf-icon-btn:disabled {
    opacity: 0.4;
    cursor: default;
}