/* ========== 用户侧通用样式（提取自 base.html） ========== */

/* 导航品牌 */
.navbar-brand {
    font-weight: bold;
    color: var(--skin-navbar-brand, #0d6efd) !important;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 4px;
}

.navbar-brand svg {
    width: 48px;
    height: 48px;
}

/* 题目卡片 */
.question-card {
    transition: transform 0.2s;
    border: 1px solid var(--skin-card-border, #e0e0e0);
}

.question-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--skin-card-shadow, 0 4px 12px rgba(0,0,0,0.1));
}

/* 徽章 */
.difficulty-badge {
    font-size: 0.75em;
}

.tag-badge {
    color: #6c757d;
    font-size: 0.875em;
}

.vip-badge {
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #856404;
}

.points-badge {
    background-color: #e3f2fd;
    color: #1976d2;
}

/* Markdown 内容 */
.markdown-content {
    line-height: 1.6;
}

.markdown-content img {
    max-width: 100%;
    height: auto;
    margin: 10px 0;
}

.markdown-content pre {
    background-color: var(--skin-code-bg, #f8f9fa);
    color: var(--skin-code-text, #212529);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}

.markdown-content code {
    background-color: var(--skin-code-bg, #e9ecef);
    color: var(--skin-code-text, #212529);
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}

/* 答案区域 */
.answer-section {
    background-color: var(--skin-card-bg, #f8f9fa);
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

/* 附件 */
.attachments {
    margin-top: 10px;
}

.attachment-item {
    padding: 8px 12px;
    background-color: var(--skin-alert-info-bg, #e3f2fd);
    border-radius: 5px;
    margin-bottom: 5px;
}

.attachment-item a {
    color: var(--skin-link-color, #1976d2);
    text-decoration: none;
}

.attachment-item a:hover {
    text-decoration: underline;
}

/* Toast 提示容器 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1050;
}

/* 题目统计与操作 */
.question-stats {
    font-size: 0.9em;
    color: #6c757d;
}

.question-actions {
    margin-top: 15px;
}

/* 加载和空状态 */
.loading-spinner {
    display: none;
    text-align: center;
    padding: 20px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--skin-muted, #6c757d);
}

.empty-state i {
    font-size: 3em;
    margin-bottom: 15px;
    opacity: 0.5;
}

/* 标签选择器 */
.tag-selector {
    border: 1px solid var(--skin-input-border, #ced4da);
    border-radius: 0.25rem;
    padding: 0.375rem 0.75rem;
    background-color: var(--skin-input-bg, #fff);
    cursor: pointer;
}

.tag-selector:hover {
    border-color: var(--skin-input-focus-border, #80bdff);
    outline: 0;
    box-shadow: var(--skin-input-focus-shadow, 0 0 0 0.2rem rgba(0,123,255,.25));
}

.selected-tags {
    margin-top: 10px;
}

.selected-tag {
    display: inline-block;
    background-color: var(--skin-primary, #007bff);
    color: white;
    padding: 3px 8px;
    border-radius: 3px;
    margin: 2px;
    font-size: 0.85em;
}

.selected-tag .remove-tag {
    margin-left: 5px;
    cursor: pointer;
}

/* AI 反馈框 */
.ai-feedback {
    background-color: var(--skin-alert-warning-bg, #fff3cd);
    border: 1px solid var(--skin-alert-warning-border, #ffeaa7);
    border-radius: 5px;
    padding: 15px;
    margin-top: 15px;
}

.ai-feedback .feedback-header {
    font-weight: bold;
    color: var(--skin-alert-warning-text, #856404);
    margin-bottom: 10px;
}

.ai-suggestions {
    background-color: var(--skin-alert-info-bg, #d1ecf1);
    border: 1px solid var(--skin-alert-info-border, #bee5eb);
    border-radius: 5px;
    padding: 15px;
    margin-top: 10px;
}

.ai-suggestions .suggestions-header {
    font-weight: bold;
    color: var(--skin-alert-info-text, #0c5460);
    margin-bottom: 10px;
}

.ai-highlights {
    background-color: var(--skin-alert-success-bg, #d4edda);
    border: 1px solid var(--skin-alert-success-border, #c3e6cb);
    border-radius: 5px;
    padding: 15px;
    margin-top: 10px;
}

.ai-highlights .highlights-header {
    font-weight: bold;
    color: var(--skin-alert-success-text, #155724);
    margin-bottom: 10px;
}

/* 分数颜色 */
.score-badge {
    font-size: 1.2em;
    font-weight: bold;
}

.score-excellent { color: #28a745; }
.score-good { color: #17a2b8; }
.score-average { color: #ffc107; }
.score-poor { color: #dc3545; }

/* 难度和题目类型颜色 */
.difficulty-easy { color: #28a745; }
.difficulty-medium { color: #ffc107; }
.difficulty-hard { color: #dc3545; }

.question-type-choice { color: #007bff; }
.question-type-qa { color: #6f42c1; }

/* 练习统计 */
.practice-stats {
    background-color: var(--skin-card-bg, #f8f9fa);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.practice-stats h5 {
    color: var(--skin-body-color, #495057);
    margin-bottom: 15px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--skin-card-border, #e9ecef);
}

.stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: #6c757d;
}

.stat-value {
    font-weight: bold;
    color: #495057;
}

/* 证书卡片 */
.certificate-card {
    border: 2px solid #28a745;
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    background: var(--skin-card-bg, linear-gradient(135deg, #fff 0%, #f8f9fa 100%));
    position: relative;
    overflow: hidden;
}

.certificate-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(40, 167, 69, 0.1) 10px,
        rgba(40, 167, 69, 0.1) 20px
    );
    animation: certificate-shine 20s linear infinite;
}

@keyframes certificate-shine {
    0% { transform: translateX(-100%) translateY(-100%); }
    100% { transform: translateX(100%) translateY(100%); }
}

.certificate-icon {
    font-size: 3em;
    color: #28a745;
    margin-bottom: 15px;
}

.certificate-title {
    font-size: 1.5em;
    font-weight: bold;
    color: #155724;
    margin-bottom: 10px;
}

.certificate-date {
    color: #6c757d;
    font-size: 0.9em;
}

/* 过滤器 */
.filter-section {
    background-color: var(--skin-card-bg, #f8f9fa);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.filter-title {
    font-weight: bold;
    color: #495057;
    margin-bottom: 15px;
}

/* 题目列表项 */
.question-list-item {
    border-left: 4px solid #007bff;
    padding-left: 15px;
    margin-bottom: 15px;
}

.question-list-item.answered {
    border-left-color: #28a745;
}

.question-list-item.unanswered {
    border-left-color: #6c757d;
}

.question-list-item.correct {
    border-left-color: #28a745;
}

.question-list-item.incorrect {
    border-left-color: #dc3545;
}

.question-list-title {
    font-weight: bold;
    color: #495057;
    margin-bottom: 5px;
}

.question-list-meta {
    font-size: 0.85em;
    color: #6c757d;
}

.question-list-actions {
    margin-top: 10px;
}

/* 分页 */
.pagination-info {
    text-align: center;
    color: #6c757d;
    margin: 20px 0;
}

/* 按钮与表单组件覆盖 */
.btn-group-sm > .btn, .btn-sm {
    font-size: 0.8rem;
}

.card-header .btn-group {
    margin-left: auto;
}

.table-responsive {
    border-radius: 0.25rem;
}

.badge {
    font-weight: normal;
}

.form-control:focus, .form-select:focus {
    border-color: var(--skin-input-focus-border, #80bdff);
    box-shadow: var(--skin-input-focus-shadow, 0 0 0 0.2rem rgba(0,123,255,.25));
}

.btn-primary {
    background-color: var(--skin-btn-primary-bg, #007bff);
    border-color: var(--skin-btn-primary-bg, #007bff);
}

.btn-primary:hover {
    background-color: var(--skin-btn-primary-hover, #0056b3);
    border-color: var(--skin-btn-primary-hover, #0056b3);
}

.btn-outline-primary {
    color: var(--skin-btn-outline-text, #007bff);
    border-color: var(--skin-btn-outline-border, #007bff);
}

.btn-outline-primary:hover {
    background-color: var(--skin-btn-outline-hover, #007bff);
    border-color: var(--skin-btn-outline-hover, #007bff);
    color: #fff;
}

.text-primary {
    color: var(--skin-primary, #007bff) !important;
}

.bg-primary {
    background-color: var(--skin-primary, #007bff) !important;
}

.border-primary {
    border-color: var(--skin-primary, #007bff) !important;
}

/* 固定导航栏 - 毛玻璃效果 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--skin-navbar-bg, rgba(248, 249, 250, 0.75)) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--skin-navbar-shadow, 0 2px 8px rgba(0,0,0,0.08));
    border-bottom: 1px solid var(--skin-navbar-border, rgba(255,255,255,0.3));
}

/* 页面顶部横幅 —— 透明底，与皮肤背景融合 */
.page-header {
    background: transparent;
    color: var(--skin-hero-text, #212529);
    padding: 50px 0 40px;
    margin-bottom: 20px;
}
.page-header h1 {
    font-weight: 700;
    margin: 0;
}
.page-header p {
    color: var(--skin-hero-sub, #6c757d);
    margin: 8px 0 0;
}

/* 右侧反馈按钮 */
.feedback-btn {
    position: fixed;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    padding: 12px 10px;
    border-radius: 8px 0 0 8px;
    transition: transform 0.3s;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    box-shadow: -2px 2px 8px rgba(0,0,0,0.15);
}

.feedback-btn:hover {
    transform: translateY(-50%) translateX(-5px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .question-card {
        margin-bottom: 15px;
    }

    .answer-section {
        padding: 15px;
    }

    .practice-stats {
        padding: 15px;
    }

    .certificate-card {
        padding: 15px;
    }

    .filter-section {
        padding: 15px;
    }

    .toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
    }
}

/* 打印样式 */
@media print {
    .navbar, .btn, .question-actions, .answer-section {
        display: none !important;
    }

    .question-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }

    .certificate-card::before {
        display: none;
    }
}

/* 导航图标颜色 */
.nav-icon-home { color: #007bff; }
.nav-icon-history { color: #6f42c1; }
.nav-icon-exams { color: #28a745; }
.nav-icon-articles { color: #fd7e14; }
.nav-icon-recruitments { color: #17a2b8; }
.nav-icon-admin { color: #6c757d; }
.nav-icon-video { color: #dc3545; }
.nav-icon-courses { color: #6f42c1; }
.nav-icon-user { color: #343a40; }

/* ========== Footer 固定在底部（内容不足一页时） ========== */

/* 让 body 成为 flex 容器，最小高度为视口高度 */
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* main 占据剩余空间，推动 footer 到底部 */
main {
    flex: 1 0 auto;
}

/* Toast 皮肤适配 */
.toast {
    background-color: var(--skin-card-bg, #fff);
    border: 1px solid var(--skin-card-border, rgba(0,0,0,.125));
    color: var(--skin-body-color, #212529);
    box-shadow: var(--skin-card-shadow, 0 0.5rem 1rem rgba(0,0,0,.15));
}

.toast-header {
    background-color: var(--skin-card-header-bg, rgba(255,255,255,.85));
    color: var(--skin-card-header-text, #6c757d);
    border-bottom: 1px solid var(--skin-card-border, rgba(0,0,0,.05));
}

.toast-header .btn-close {
    filter: var(--skin-toast-close-filter, none);
}

.toast-body {
    color: var(--skin-body-color, #212529);
}