.pdf-window-container {
    width: 100%;
    overflow: hidden;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0,0,0,0.08);
}

.pdf-window-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    user-select: none;
    min-height: 52px;
}

.pdf-window-controls {
    display: flex;
    gap: 6px;
    width: 60px;
    flex-shrink: 0;
}

.pdf-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.pdf-dot-red { background-color: #ff5f56; }
.pdf-dot-yellow { background-color: #ffbd2e; }
.pdf-dot-green { background-color: #27c93f; }

.pdf-window-title {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 50%;
    flex-grow: 1;
}

.pdf-window-action-area {
    width: 120px;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-shrink: 0;
}

.pdf-window-spacer {
    width: 60px;
}

.pdf-window-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 12px;
    font-weight: 600;
    padding: 0 16px;
    transition: all 0.25s ease;
    border: none;
    outline: none;
    cursor: pointer;
    white-space: nowrap;
}

.pdf-window-body {
    width: 100%;
    background-color: #525659;
    position: relative;
    overflow: hidden;
}

.pdf-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.pdf-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 300px;
    color: #888888;
    background-color: #fafafa;
    text-align: center;
    padding: 20px;
}

.pdf-placeholder-icon {
    font-size: 48px;
    margin-bottom: 12px;
    color: #bbb;
}

.pdf-placeholder p {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    margin: 0;
}