html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

a, .btn-link {
    color: #006bb7;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}
/* ===== 侧边导航整体 ===== */
.sidebar {
    width: 240px;
    background-color: #FFFFFF;
    border-right: 1px solid #E2E8F0;
    padding: 16px 12px;
}

/* 导航容器 */
.dojo-nav {
    display: flex;
    flex-direction: column;
    gap: 16px;
    height: 100%;
}

/* 顶部标题区 */
.dojo-nav-header {
    padding: 4px 8px 4px 8px;
    margin-bottom: 4px;
}

.dojo-nav-title {
    font-size: 18px;
    font-weight: 800;
    color: #111827;
    letter-spacing: 0.4px;
}

.dojo-nav-subtitle {
    font-size: 12px;
    color: #9CA3AF;
    margin-top: 2px;
}

/* 分组标题 */
.dojo-nav-section-title {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #9CA3AF;
    padding: 0 8px;
    margin-bottom: 4px;
}

/* 分组容器 */
.dojo-nav-section {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* 单条导航项 */
.dojo-nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    margin: 2px 4px;
    border-radius: 10px;
    font-size: 14px;
    color: #4B5563;
    text-decoration: none;
    position: relative;
    transition: background-color 0.12s ease, color 0.12s ease, transform 0.08s ease;
}

    /* 图标 */
    .dojo-nav-item .nav-icon {
        width: 20px;
        text-align: center;
        font-size: 15px;
        opacity: 0.9;
    }

    /* hover 效果：轻微位移 + 淡蓝底 */
    .dojo-nav-item:hover {
        background-color: #eff1f3; /*灰色 重要！！！ */ 
        color: #111827; /* 蓝色主色（配你主题） */
        transform: translateX(1px);
    }

    /* 选中态：有左侧色条 + 更明显底色 + 字重一点 */
    .dojo-nav-item.active {
        background-color: #f1f5fa;
        color: #5C6BC0;
        font-weight: 500;
    }

        /* 左侧高亮条 */
        .dojo-nav-item.active::before {
            content: "";
            position: absolute;
            left: -4px;
            top: 6px;
            bottom: 6px;
            width: 3px;
            border-radius: 999px;
            background-color: #f1f5fa; /* 用你喜欢的 Secondary 蓝紫色 */
        }
/* 统一重置 sidebar 样式，干掉原来的渐变背景 */
.sidebar {
    width: 240px;
    /* 用 background 而不是 background-color，覆盖掉之前的 background-image */
    background: #E2E8F0;
    border-right: 1px solid #E2E8F0;
    padding: 16px 12px;
}
.student-cell {
    display: flex;
    align-items: center;
    gap: 8px;
}

.student-name {
    font-weight: 500;
}

.student-cell:hover .student-name {
    text-decoration: underline;
}

/* 关键：兼容 MudBlazor avatar 内部结构 */
.avatar-img,
.avatar-img img {
    width: 40px !important;
    height: 40px !important;
    object-fit: cover !important;
    border-radius: 50% !important;
}