/* 整体背景 */
body {
    background: #1a1a1a !important;
}

/* 聊天区域背景半透明 */
#chat {
    background: rgba(20, 20, 20, 0.85) !important;
    backdrop-filter: blur(8px);
}

/* 角色消息气泡 */
.mes[is_user="false"] .mes_block {
    background: linear-gradient(135deg, #2a2a3a, #1f1f2e) !important;
    border-radius: 12px !important;
    border: 1px solid #3a3a4a !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

/* 用户消息气泡 */
.mes[is_user="true"] .mes_block {
    background: linear-gradient(135deg, #3a2a4a, #2e1f3a) !important;
    border-radius: 12px !important;
    border: 1px solid #5a3a6a !important;
}

/* 头像圆角 */
.mesAvatar {
    border-radius: 50% !important;
    border: 2px solid #666 !important;
}

/* 字体优化 */
body, .mes_text {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif !important;
    line-height: 1.6 !important;
}