/* 主题选择器样式 */
    .theme-selector {
        position: fixed;
        top: 20px;
        right: 20px;
        z-index: 1000;
        background: white;
        border-radius: 12px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.15);
        padding: 15px;
        min-width: 200px;
        transition: all 0.3s ease;
    }

    .theme-selector.collapsed {
        min-width: auto;
        padding: 10px;
    }

    .theme-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        font-size: 14px;
        font-weight: 500;
    }

    .theme-toggle:hover {
        color: #666;
    }

    .theme-options {
        margin-top: 12px;
        display: none;
    }

    .theme-selector:not(.collapsed) .theme-options {
        display: block;
    }

    .theme-option {
        display: flex;
        align-items: center;
        padding: 8px 12px;
        margin: 4px 0;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.2s ease;
    }

    .theme-option:hover {
        background: #f5f5f5;
    }

    .theme-option.active {
        background: #e3f2fd;
        font-weight: 500;
    }

    .theme-preview {
        width: 20px;
        height: 20px;
        border-radius: 4px;
        margin-right: 10px;
        border: 1px solid #ddd;
    }

    .theme-name {
        flex: 1;
    }

    .theme-designer {
        font-size: 11px;
        opacity: 0.7;
        margin-left: 5px;
    }

    /* 通用按钮样式 - 修复经典MDUI主题下解析按钮样式问题 */
    .mdui-btn.mdui-color-theme-accent {
        background: #ff4081 !important;
        color: #ffffff !important;
        border: none;
        border-radius: 4px;
        text-transform: none;
        font-weight: 500;
        transition: all 0.3s ease;
    }

    .mdui-btn.mdui-color-theme-accent:hover {
        background: #f50057 !important;
        box-shadow: 0 4px 8px rgba(255, 64, 129, 0.3);
    }

    .mdui-btn.mdui-color-red {
        background: #f44336 !important;
        color: #ffffff !important;
        border: none;
        border-radius: 4px;
        text-transform: none;
        font-weight: 500;
        transition: all 0.3s ease;
    }

    .mdui-btn.mdui-color-red:hover {
        background: #d32f2f !important;
        box-shadow: 0 4px 8px rgba(244, 67, 54, 0.3);
    }

    /* 基础样式重置 */
    body {
        transition: all 0.5s ease;
    }

    body::before {
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        opacity: 0.3;
        z-index: -1;
        content: "";
        position: fixed;
    }

    .mdui-textfield-input {
        float: left;
        width: 75%;
        text-transform: none;
        transition: all 0.3s ease;
    }

    .mdui-btn {
        width: 12.5%;
        transition: all 0.3s ease;
    }

    .mdui-container {
        max-width: 900px;
        margin-top: 6em;
        margin-bottom: 4em;
        transition: all 0.3s ease;
    }

    .mdui-btn, .mdui-fab {
        min-width: 0px;
    }

    .mdui-card {
        padding: 2em;
        transition: all 0.5s ease;
    }

    .down .mdui-btn {
        width: auto;
        margin-left: 1.5em;
        margin-bottom: 0.5em;
    }

    p {
        opacity: 0.8;
    }

    .mdui-card-content {
        padding: 16px 0 0 0;
    }

    .mdui-textfield.mdui-textfield-floating-label {
        display: flex;
        align-items: center;
    }

    .mdui-textfield-input, .mdui-btn {
        margin-right: 8px;
    }

    /* 移动端适配 */
    @media (max-width: 600px) {
        .theme-selector {
            top: 10px;
            right: 10px;
            min-width: 160px;
            padding: 10px;
        }

        .mdui-container {
            margin-top: 4em;
            margin-bottom: 2em;
        }

        .mdui-card {
            padding: 1em;
        }

        .mdui-textfield-input {
            width: 100%;
            float: none;
        }

        .mdui-btn {
            width: 100%;
            margin-top: 0.5em;
        }

        .down .mdui-btn {
            width: 100%;
            margin-left: 0;
        }

        .mdui-textfield.mdui-textfield-floating-label {
            flex-direction: column;
        }

        .mdui-textfield-input, .mdui-btn {
            margin-right: 0;
        }
    }

    @media (max-width: 400px) {
        .theme-selector {
            position: relative;
            top: auto;
            right: auto;
            margin-bottom: 20px;
        }
    }

    /* 主题切换动画 */
    body {
        transition: background 0.8s ease, color 0.8s ease;
    }

    .mdui-card, .mdui-btn, .mdui-textfield-input {
        transition: all 0.5s ease;
    }