.bim-dialog {
    position: absolute;
    background: var(--bim-dialog-bg, var(--bim-bg-elevated));
    border: 1px solid var(--bim-dialog-border-color, var(--bim-border-default));
    border-radius: var(--bim-dialog-radius, 4px);
    box-shadow: var(--bim-shadow-lg);
    display: flex;
    flex-direction: column;
    z-index: 10001;
    color: var(--bim-dialog-text-color, var(--bim-text-secondary));
    overflow: hidden;
    min-width: 200px;
    min-height: 100px;
    pointer-events: auto;
}

.bim-dialog-header {
    position: relative;
    min-height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 0 10px 0 18px;
    cursor: default;
    user-select: none;
    flex-shrink: 0;
    border-bottom: 1px solid var(--bim-border-subtle, var(--bim-dialog-border-color, var(--bim-border-default)));
    box-shadow: var(--bim-shadow-sm);
    z-index: 1;
}

.bim-dialog-header.draggable {
    cursor: move;
}

.bim-dialog-title {
    flex: 1;
    min-width: 0;
    font-size: 18px;
    font-weight: 300;
    line-height: 1.2;
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--bim-dialog-title-color, var(--bim-text-primary));
}

.bim-dialog-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    cursor: pointer;
    color: var(--bim-text-secondary);
    border-radius: 4px;
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
    margin-left: 8px;
}

.bim-dialog-close:hover {
    color: var(--bim-text-primary);
    background-color: var(--bim-component-bg-hover, rgba(15, 23, 42, 0.06));
    box-shadow: inset 0 0 0 1px var(--bim-border-subtle, var(--bim-dialog-border-color, var(--bim-border-default)));
}

.bim-dialog-close svg {
    display: block;
    width: 20px;
    height: 20px;
}

.bim-dialog-content {
    flex: 1;
    overflow: auto;
    font-size: 14px;
    color: var(--bim-dialog-text-color, var(--bim-text-secondary));
    background: var(--bim-dialog-bg, var(--bim-bg-elevated));
}

/* 缩放句柄 */
.bim-dialog-resize-handle {
    position: absolute;
    width: 28px;
    height: 28px;
    right: 2px;
    bottom: 2px;
    cursor: se-resize;
    z-index: 10;
    border-radius: 4px 0 4px 0;
    transition: background-color 0.2s ease;
}

.bim-dialog-resize-handle:hover {
    background: var(--bim-component-bg-hover, rgba(15, 23, 42, 0.04));
}

.bim-dialog-resize-handle::after {
    content: '';
    position: absolute;
    right: 7px;
    bottom: 7px;
    width: 11px;
    height: 11px;
    border-right: 2px solid var(--bim-text-tertiary);
    border-bottom: 2px solid var(--bim-text-tertiary);
}

.bim-dialog-resize-handle::before {
    content: '';
    position: absolute;
    right: 11px;
    bottom: 11px;
    width: 6px;
    height: 6px;
    border-right: 2px solid var(--bim-text-tertiary);
    border-bottom: 2px solid var(--bim-text-tertiary);
    opacity: 0.85;
}

.bim-dialog-resize-handle:hover::after,
.bim-dialog-resize-handle:hover::before {
    border-color: var(--bim-text-primary);
}