.converter {
    max-width: 480px;
    margin: 1.5rem auto;
    font-family: var(--text-sans);
}

/* Drop zone */
.nbs-dropzone {
    border: 2px dashed var(--surface-b);
    border-radius: 12px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    color: var(--subtext-a);
    font-size: 0.9rem;
}
.nbs-dropzone:hover,
.nbs-dropzone.drag-over {
    border-color: var(--blue);
    background: hsla(197, 97%, 46%, 0.06);
}
.nbs-dropzone .drop-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.nbs-dropzone .drop-hint {
    font-size: 0.75rem;
    color: var(--overlay-a);
    margin-top: 0.25rem;
}
.nbs-dropzone input[type="file"] {
    display: none;
}

/* Mode toggle */
.mode-toggle {
    display: flex;
    justify-content: center;
    gap: 2px;
    margin: 0.75rem auto;
    background: var(--crust);
    border-radius: 8px;
    padding: 3px;
    width: fit-content;
}
.mode-btn {
    padding: 0.3rem 1rem;
    border: none;
    border-radius: 6px;
    background: transparent;
    font-family: var(--text-sans);
    font-size: 0.78rem;
    color: var(--overlay-b);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.mode-btn.active {
    background: white;
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* Output card */
.output-card {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    background: var(--mantle);
    border: 1px solid var(--surface-a);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
}
.output-info {
    min-width: 0;
}
.output-filename {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.output-stats {
    font-size: 0.72rem;
    color: var(--overlay-b);
    margin-top: 0.15rem;
}
.download-btn {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--surface-b);
    text-decoration: none;
    transition: color 0.15s;
}
.download-btn:hover {
    color: var(--overlay-b);
}

/* Error */
.output-error {
    margin-top: 0.75rem;
    padding: 0.6rem 0.8rem;
    border-radius: 8px;
    background: hsla(0, 70%, 50%, 0.08);
    font-size: 0.8rem;
    color: var(--red);
}