/* 题库管理页面“题目”按钮（info色）保持黑色，选中为青色 */
.btn-outline-info {
    color: #000 !important;
    border-color: #000 !important;
    background-color: #fff !important;
}

.btn-outline-info:hover,
.btn-outline-info:focus {
    color: #fff !important;
    background-color: #000 !important;
    border-color: #000 !important;
}

.btn-outline-info.active,
.btn-outline-info:active,
.btn-outline-info:focus-visible,
.btn-outline-info.show,
.btn-outline-info:checked {
    color: #fff !important;
    background-color: #17a2b8 !important;
    border-color: #17a2b8 !important;
}

/* 基础样式 */
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    color: #000000;
}

/* 卡片样式 */
.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    margin-bottom: 1rem;
}

/* 代码块样式 */
pre {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 0.25rem;
    font-size: 0.9rem;
}

/* 警告框样式修改为黑白 */
.alert-success {
    background-color: #f8f9fa !important;
    color: #000000 !important;
    border: 1px solid #dee2e6 !important;
}

/* 调大单选框和复选框的大小 */
.form-check-input {
    transform: scale(1.2);
    margin-right: 0.5rem;
}

/* 调大选项文字的大小 */
.form-check-label {
    font-size: 1.1rem;
    line-height: 1.5;
}

/* 调大按钮的大小 */
.btn {
    font-size: 1rem;
    padding: 0.5rem 1rem;
}

/* 按钮颜色修改为黑白 */
.btn-primary {
    background-color: #000000 !important;
    border-color: #000000 !important;
}

.btn-outline-primary {
    color: #000000 !important;
    border-color: #000000 !important;
    background-color: #fff !important;
}

/* 题库管理页面“题目”按钮（info色）保持黑色 */
.btn-outline-info {
    color: #000 !important;
    border-color: #000 !important;
    background-color: #fff !important;
}

.btn-outline-info:hover,
.btn-outline-info:focus {
    color: #fff !important;
    background-color: #000 !important;
    border-color: #000 !important;
}

/* 题库管理页面“题目”按钮保持黑色 */
a.btn-outline-primary,
button.btn-outline-primary {
    color: #000 !important;
    border-color: #000 !important;
    background-color: #fff !important;
}

a.btn-outline-primary:hover,
button.btn-outline-primary:hover {
    color: #fff !important;
    background-color: #000 !important;
    border-color: #000 !important;
}

.btn-outline-success {
    color: #000000 !important;
    border-color: #000000 !important;
}

.btn-outline-warning {
    color: #000000 !important;
    border-color: #000000 !important;
}

.btn-outline-danger {
    color: #000000 !important;
    border-color: #000000 !important;
}

.btn-outline-secondary {
    color: #000000 !important;
    border-color: #000000 !important;
}

/* 刷题背题按钮样式 */
.btn-dark {
    color: #fff !important;
    background-color: #212529 !important;
    border-color: #212529 !important;
}

/* 模态框关闭按钮 */
.btn-close {
    box-sizing: content-box;
    width: 1em;
    height: 1em;
    padding: 0.25em 0.25em;
    color: #000;
    background: transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='M.293.293a1 1 0 011.414 0L8 6.586 14.293.293a1 1 0 111.414 1.414L9.414 8l6.293 6.293a1 1 0 01-1.414 1.414L8 9.414l-6.293 6.293a1 1 0 01-1.414-1.414L6.586 8 .293 1.707a1 1 0 010-1.414z'/%3e%3c/svg%3e") center/1em auto no-repeat;
    border: 0;
    border-radius: 0.25rem;
    cursor: pointer;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1055;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: 1.75rem auto;
    max-width: 800px;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 0.3rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1rem;
    border-bottom: 1px solid #dee2e6;
    border-top-left-radius: calc(0.3rem - 1px);
    border-top-right-radius: calc(0.3rem - 1px);
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: 1rem;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 1rem;
    border-top: 1px solid #dee2e6;
    border-bottom-right-radius: calc(0.3rem - 1px);
    border-bottom-left-radius: calc(0.3rem - 1px);
}

/* 响应式设计 */
@media (max-width: 576px) {
    .modal-dialog {
        margin: 0.5rem;
    }

    /* 确保按钮文字居中 */
    .btn {
        text-align: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* 调整按钮组在手机端的显示 */
    .btn-group {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .btn-group .btn {
        flex: 1 1 auto;
        min-width: 80px;
    }

    /* 调整卡片头部的布局 */
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    /* 调整导航栏在手机端的显示 */
    .navbar-nav {
        margin-top: 0.5rem;
    }

    /* 调整表单元素在手机端的显示 */
    .form-control {
        width: 100%;
    }
}

/* 确保页面内容不被模态框遮挡 */
main {
    position: relative;
    z-index: 1;
}

/* E-Ink模式样式 */
body.ink-mode {
    background-color: #ffffff !important;
    color: #000000 !important;
}

body.ink-mode .navbar {
    background-color: #ffffff !important;
}

body.ink-mode .navbar .navbar-brand,
body.ink-mode .navbar .nav-link {
    color: #000000 !important;
}

body.ink-mode .navbar-toggler {
    border-color: #000000 !important;
}

body.ink-mode .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23000000' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

body.ink-mode .card,
body.ink-mode .card * {
    background-color: #ffffff !important;
    border-color: #000000 !important;
    box-shadow: none !important;
    border-radius: 2px !important;
}

body.ink-mode .btn,
body.ink-mode .btn:hover,
body.ink-mode .btn:focus {
    background-color: #ffffff !important;
    color: #000000 !important;
    border-color: #000000 !important;
    box-shadow: none !important;
    transition: none !important;
    border-radius: 2px !important;
}

body.ink-mode .btn:hover {
    background-color: #e0e0e0 !important;
    color: #000000 !important;
}

body.ink-mode .btn.active {
    background-color: #000000 !important;
    color: #ffffff !important;
}

body.ink-mode .alert {
    background-color: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #000000 !important;
}

body.ink-mode .badge {
    background-color: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #000000 !important;
}

body.ink-mode .form-control {
    background-color: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #000000 !important;
}

body.ink-mode .modal-content {
    background-color: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #000000 !important;
}

body.ink-mode .modal-header {
    border-bottom: 1px solid #000000 !important;
}

body.ink-mode .modal-footer {
    border-top: 1px solid #000000 !important;
}

body.ink-mode footer {
    background-color: #ffffff !important;
}

/* 全面覆盖所有可能有背景色的元素 */
body.ink-mode .card-header,
body.ink-mode .card-body,
body.ink-mode .list-group-item,
body.ink-mode .bg-light,
body.ink-mode .bg-primary,
body.ink-mode .bg-success,
body.ink-mode .bg-danger,
body.ink-mode .bg-warning,
body.ink-mode .bg-info,
body.ink-mode .bg-secondary,
body.ink-mode .bg-dark,
body.ink-mode .text-bg-primary,
body.ink-mode .text-bg-success,
body.ink-mode .text-bg-danger,
body.ink-mode .text-bg-warning,
body.ink-mode .text-bg-info,
body.ink-mode .text-bg-secondary,
body.ink-mode .text-bg-dark,
body.ink-mode .alert-primary,
body.ink-mode .alert-success,
body.ink-mode .alert-danger,
body.ink-mode .alert-warning,
body.ink-mode .alert-info,
body.ink-mode .alert-secondary,
body.ink-mode .btn-primary,
body.ink-mode .btn-success,
body.ink-mode .btn-danger,
body.ink-mode .btn-warning,
body.ink-mode .btn-info,
body.ink-mode .btn-secondary,
body.ink-mode .btn-dark,
body.ink-mode .badge-primary,
body.ink-mode .badge-success,
body.ink-mode .badge-danger,
body.ink-mode .badge-warning,
body.ink-mode .badge-info,
body.ink-mode .badge-secondary,
body.ink-mode .badge-dark {
    background-color: #ffffff !important;
    color: #000000 !important;
    border-color: #000000 !important;
}

/* 去除所有动效 */
body.ink-mode * {
    animation: none !important;
    transition: none !important;
    transform: none !important;
}

/* 响应式设计 - E-Ink模式 */
@media (max-width: 768px) {
    body.ink-mode {
        font-size: 16px !important;
    }

    body.ink-mode .container {
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    body.ink-mode .card {
        margin-bottom: 10px !important;
    }

    body.ink-mode .btn {
        padding: 8px 16px !important;
        font-size: 16px !important;
    }

    body.ink-mode .form-control {
        padding: 8px !important;
        font-size: 16px !important;
    }
}

/* 答题卡响应式设计 */
@media (max-width: 576px) {
    .modal-body .btn-sm {
        font-size: 10px !important;
        min-height: 25px !important;
    }

    /* 调整手机端按钮宽度，确保文字完整显示 */
    .card-body .btn {
        padding: 0.5rem 0.75rem !important;
        white-space: nowrap !important;
        min-width: 60px !important;
    }
}

/* E-Ink模式下禁用单选框和复选框的动画 */
body.ink-mode .form-check-input {
    transition: none !important;
    animation: none !important;
}

body.ink-mode .form-check-input:checked {
    transition: none !important;
    animation: none !important;
}

body.ink-mode .form-check-input:focus {
    box-shadow: none !important;
}

body.ink-mode .form-check-input::before,
body.ink-mode .form-check-input::after {
    transition: none !important;
    animation: none !important;
}

body.ink-mode .form-check-input:checked::before,
body.ink-mode .form-check-input:checked::after {
    transition: none !important;
    animation: none !important;
}

body.ink-mode .form-check-input[type="checkbox"]:checked,
body.ink-mode .form-check-input[type="radio"]:checked {
    background-image: none !important;
}

/* E-Ink模式下禁用按钮的所有动画和加载效果 */
body.ink-mode .btn:active,
body.ink-mode .btn:focus,
body.ink-mode .btn:hover {
    transition: none !important;
    animation: none !important;
    transform: none !important;
}

body.ink-mode .btn:focus-visible {
    outline: none !important;
    box-shadow: none !important;
}

/* 禁用Bootstrap的按钮加载动画 */
body.ink-mode .btn:disabled,
body.ink-mode .btn.disabled {
    opacity: 1 !important;
    cursor: not-allowed !important;
}

/* 禁用按钮的所有过渡和动画效果 */
body.ink-mode a,
body.ink-mode button,
body.ink-mode .btn {
    -webkit-transition: none !important;
    -moz-transition: none !important;
    -ms-transition: none !important;
    -o-transition: none !important;
    transition: none !important;
    -webkit-animation: none !important;
    -moz-animation: none !important;
    -ms-animation: none !important;
    -o-animation: none !important;
    animation: none !important;
}

/* 禁用点击后的视觉反馈 */
body.ink-mode .btn::after,
body.ink-mode .btn::before {
    display: none !important;
}