body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    padding: 24px;
}
.container {
    max-width: 760px;
    margin: 0 auto;
}
.dropzone {
    border: 2px dashed #bbb;
    padding: 24px;
    text-align: center;
    cursor: pointer;
}
.dropzone.dragover {
    border-color: #333;
    background: #fafafa;
}
.files {
    margin-top: 16px;
}
.loading {
    margin-top: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hidden {
    display: none;
}
.spinner {
    width: 18px;
    height: 18px;
    border: 3px solid #ddd;
    border-top-color: #333;
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}
.file-item {
    padding: 8px 0;
    display:flex;
    gap:8px;
    align-items:center;
}
button {
    padding: 8px 12px;
    cursor: pointer;
}
.error {
    color: #b00020;
}
.meta {
    color:#666;
    font-size:0.9em;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}