body, html {
    margin: 0;
    padding: 0;
    height: 100vh;
    font-family: ArtifaktElement;
}

#header, #preview, #overlay {
    position: absolute;
    width: 100%;
}

#header {
    height: 3em;
    display: flex;
    flex-flow: row nowrap;
    justify-content: space-between;
    align-items: center;
}

#preview {
    top: 3em;
    bottom: 0;
}

#overlay {
    top: 3em;
    bottom: 0;
}

#overlay {
    z-index: 1;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 1em;
    display: none;
}

#overlay > .notification {
    margin: auto;
    padding: 1em;
    max-width: 50%;
    background: white;
}

#header > * {
    height: 2em;
    margin: 0 0.5em;
    font-size: 1em;
    font-family: ArtifaktElement;
}

#header .title {
    flex: 1 0 auto;
    height: auto;
}

#models {
    flex: 0 1 auto;
    min-width: 2em;
}

#model-title-container {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    pointer-events: none;
    display: none; /* 默认隐藏 */
}

#model-title-container:not(:empty) {
    display: block; /* 有内容时显示 */
}

#model-title {
    margin: 0;
    color: #333;
    font-size: 18px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.9);
    padding: 8px 16px;
    border-radius: 4px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
    white-space: nowrap;
    pointer-events: auto;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

#model-title:empty {
    display: none;
}