/* ==================== 全局变量 ==================== */
:root {
    --color-primary: #4F46E5;
    --color-primary-light: #6366F1;
    --color-primary-dark: #4338CA;
    --color-bg: #F8FAFC;
    --color-sidebar: #1E293B;
    --color-sidebar-hover: #334155;
    --color-sidebar-active: #4F46E5;
    --color-text: #1E293B;
    --color-text-secondary: #64748B;
    --color-text-light: #94A3B8;
    --color-border: #E2E8F0;
    --color-white: #FFFFFF;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-danger: #EF4444;
    --color-info: #3B82F6;
    --color-purple: #8B5CF6;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);

    --sidebar-width: 240px;
    --transition: all 0.2s ease;
}

/* ==================== 重置 ==================== */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    height: 100vh;                     /* 锁死视口高度，避免内容过长时整页滚动 */
    overflow: hidden;                   /* body 不滚动，由 sidebar 和 main-content 内部各自滚动 */
}

/* ==================== 布局 ==================== */
.app-container {
    display: flex;
    height: 100vh;                      /* 填满视口 */
}

/* ==================== 侧边栏 ==================== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-sidebar);
    display: flex;
    flex-direction: column;             /* header / nav / sidebar-footer / site-footer 垂直排列 */
    flex-shrink: 0;
    height: 100vh;                      /* 固定在视口左侧，内容多时 nav 内部滚动 */
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    font-size: 15px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 8px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--color-text-light);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
}

.nav-item:hover {
    background: var(--color-sidebar-hover);
    color: var(--color-white);
}

.nav-item.active {
    background: var(--color-sidebar-active);
    color: var(--color-white);
}

.nav-item svg { flex-shrink: 0; }

.nav-badge {
    margin-left: auto;
    background: var(--color-danger);
    color: var(--color-white);
    font-size: 11px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 12px 8px;
    border-top: 1px solid rgba(255,255,255,0.08);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* ==================== 主内容区 ==================== */
.main-content {
    flex: 1;
    min-height: 0;          /* 关键：允许 flex item 收缩到比内容高度小，否则会被撑开导致 body 滚动 */
    overflow-y: auto;
    padding: 32px 40px;
}

.content-section { display: none; }
.content-section.active { display: block; }

.section-header {
    margin-bottom: 24px;
}

.section-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.section-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* 搜索框 */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
    margin-top: 12px;
    max-width: 480px;
}

.search-icon {
    position: absolute;
    left: 12px;
    color: var(--color-text-secondary);
    pointer-events: none;
    flex-shrink: 0;
}

.search-input {
    width: 100%;
    padding: 8px 36px 8px 38px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 13px;
    background: var(--color-white);
    color: var(--color-text);
    transition: var(--transition);
    outline: none;
}

.search-input::placeholder { color: #94A3B8; }

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.search-clear {
    position: absolute;
    right: 8px;
    width: 20px;
    height: 20px;
    border: none;
    border-radius: 50%;
    background: #E2E8F0;
    color: #64748B;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.search-clear:hover { background: #CBD5E1; color: #1E293B; }



.section-actions {
    display: flex;
    gap: 8px;
    margin-top: 12px;
    align-items: center;
}

/* 导出格式下拉框 */
.export-select {
    padding: 6px 10px;
    border: 1px solid #CBD5E1;
    border-radius: 8px;
    background: #FFFFFF;
    color: #1E293B;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.export-select:hover { border-color: #A5B4FC; }
.export-select:focus { border-color: #6366F1; box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12); }

/* ==================== 按钮 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary-dark); }

.btn-outline {
    background: var(--color-white);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-ghost {
    background: transparent;
    color: var(--color-text-light);
    width: 100%;
    justify-content: center;
}
.btn-ghost:hover { background: var(--color-sidebar-hover); color: var(--color-white); }

.btn-sm { padding: 7px 12px; font-size: 13px; }

/* ==================== 输入区 ==================== */
.input-area {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.input-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid var(--color-border);
    background: #FAFBFC;
}

.input-meta { font-size: 13px; color: var(--color-text-secondary); }

.requirement-textarea {
    width: 100%;
    min-height: 300px;
    padding: 20px;
    border: none;
    outline: none;
    resize: vertical;
    font-size: 14px;
    line-height: 1.8;
    font-family: inherit;
    color: var(--color-text);
}

.requirement-textarea::placeholder { color: var(--color-text-light); }

.input-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    border-top: 1px solid var(--color-border);
    background: #FAFBFC;
    flex-wrap: wrap;
    gap: 12px;
}

.analysis-options {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.option-group {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.option-group-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    white-space: nowrap;
    padding-right: 8px;
    border-right: 1px solid var(--color-border);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
    cursor: pointer;
}

/* ==================== 分析概览 ==================== */
.analysis-overview {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.overview-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.overview-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.overview-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-blue { background: #EBF5FF; color: var(--color-info); }
.icon-amber { background: #FEF3C7; color: var(--color-warning); }
.icon-purple { background: #EDE9FE; color: var(--color-purple); }
.icon-green { background: #D1FAE5; color: var(--color-success); }

.overview-info { display: flex; flex-direction: column; }
.overview-label { font-size: 13px; color: var(--color-text-secondary); }
.overview-value { font-size: 28px; font-weight: 700; color: var(--color-text); }

/* ==================== 结果容器 ==================== */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==================== 卡片 ==================== */
.result-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.result-card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 10px;
    background: #FAFBFC;
}

.result-card-header h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
}

.result-card-body { padding: 16px 20px; }

/* ==================== 功能点 ==================== */
.func-point {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #F1F5F9;
}
.func-point:last-child { border-bottom: none; }

.func-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.func-content { flex: 1; }
.func-title { font-size: 14px; font-weight: 600; color: var(--color-text); margin-bottom: 4px; }
.func-desc { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }

.func-tags { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.func-tag {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}
.tag-actor { background: #EBF5FF; color: var(--color-info); }
.tag-action { background: #D1FAE5; color: var(--color-success); }
.tag-data { background: #FEF3C7; color: var(--color-warning); }
.tag-condition { background: #FCE7F3; color: #EC4899; }

/* ==================== 隐性需求 ==================== */
.hidden-req {
    display: flex;
    gap: 12px;
    padding: 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    border-left: 3px solid;
}

.hidden-req.security { background: #FEF2F2; border-color: var(--color-danger); }
.hidden-req.performance { background: #FFFBEB; border-color: var(--color-warning); }
.hidden-req.compatibility { background: #EFF6FF; border-color: var(--color-info); }
.hidden-req.exception { background: #FDF4FF; border-color: var(--color-purple); }
.hidden-req.usability { background: #F0FDF4; border-color: var(--color-success); }
.hidden-req.data { background: #FFF7ED; border-color: #F97316; }

.hidden-req-icon { flex-shrink: 0; font-size: 20px; }
.hidden-req-content { flex: 1; }
.hidden-req-title {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.hidden-req-category {
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 3px;
    font-weight: 500;
}
.hidden-req-desc { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }
.hidden-req-suggestion {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 6px;
    padding: 6px 10px;
    background: rgba(255,255,255,0.6);
    border-radius: var(--radius-sm);
}

/* ==================== 边界场景 ==================== */
.boundary-group { margin-bottom: 20px; }
.boundary-group:last-child { margin-bottom: 0; }

.boundary-group-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.boundary-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.boundary-table th {
    text-align: left;
    padding: 10px 12px;
    background: #F8FAFC;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: 12px;
    border-bottom: 1px solid var(--color-border);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.boundary-table td {
    padding: 10px 12px;
    border-bottom: 1px solid #F1F5F9;
    color: var(--color-text);
}

.boundary-table tr:last-child td { border-bottom: none; }

.boundary-value {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    font-family: 'Consolas', 'Monaco', monospace;
}
.bv-valid { background: #D1FAE5; color: #065F46; }
.bv-invalid { background: #FEE2E2; color: #991B1B; }
.bv-boundary { background: #FEF3C7; color: #92400E; }

/* ==================== 等价类 ==================== */
.equivalence-section { margin-bottom: 16px; }
.equivalence-header {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
    padding: 8px 12px;
    background: #F8FAFC;
    border-radius: var(--radius-sm);
}

.equivalence-list { display: flex; flex-direction: column; gap: 6px; padding-left: 12px; }

.equivalence-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
}

.eq-valid { background: #F0FDF4; }
.eq-invalid { background: #FEF2F2; }

.eq-badge {
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 3px;
    font-weight: 600;
    flex-shrink: 0;
}
.eq-badge.valid { background: var(--color-success); color: var(--color-white); }
.eq-badge.invalid { background: var(--color-danger); color: var(--color-white); }

/* ==================== 异常场景 ==================== */
.exception-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: #FFF7ED;
    margin-bottom: 6px;
    border: 1px solid #FED7AA;
}

.exception-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #F97316;
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.exception-content { flex: 1; }
.exception-title { font-size: 13px; font-weight: 600; color: var(--color-text); }
.exception-desc { font-size: 12px; color: var(--color-text-secondary); margin-top: 2px; }

/* ==================== 状态转换 ==================== */
.state-diagram {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 16px 0;
}

.state-node {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    border: 2px solid;
    text-align: center;
    min-width: 80px;
}

.state-initial { border-color: var(--color-info); color: var(--color-info); background: #EBF5FF; }
.state-normal { border-color: var(--color-success); color: var(--color-success); background: #F0FDF4; }
.state-warning { border-color: var(--color-warning); color: var(--color-warning); background: #FFFBEB; }
.state-error { border-color: var(--color-danger); color: var(--color-danger); background: #FEF2F2; }
.state-final { border-color: var(--color-text-secondary); color: var(--color-text-secondary); background: #F8FAFC; }

.state-arrow {
    color: var(--color-text-light);
    font-size: 18px;
}

.state-transition-label {
    font-size: 11px;
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: 4px;
}

/* ==================== 测试用例 ==================== */

/* 全选栏 */
.tc-select-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    margin-bottom: 12px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.tc-select-all-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    user-select: none;
}

.tc-select-all-label input { width: 16px; height: 16px; cursor: pointer; accent-color: var(--color-primary); }

.tc-select-count { font-size: 12px; color: var(--color-text-secondary); }

/* 单条用例勾选框 */
.tc-checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-right: 2px;
    flex-shrink: 0;
}

.tc-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

/* 勾选状态高亮 */
.testcase-card.selected {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-sm);
}

.testcase-card.selected .testcase-header {
    background: #EEF2FF;
}

/* 导出区「仅导出勾选」复选框 */
.export-selected-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    user-select: none;
    white-space: nowrap;
}

.export-selected-label input { width: 15px; height: 15px; cursor: pointer; accent-color: var(--color-primary); }

.testcase-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition);
}

.testcase-card:hover { box-shadow: var(--shadow-md); }

.testcase-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    background: #FAFBFC;
}

.testcase-id {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    font-weight: 700;
    color: var(--color-primary);
    background: #EEF2FF;
    padding: 2px 8px;
    border-radius: 4px;
}

.testcase-title { font-size: 14px; font-weight: 600; color: var(--color-text); flex: 1; }

.testcase-type {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}
.tc-positive { background: #D1FAE5; color: #065F46; }
.tc-negative { background: #FEE2E2; color: #991B1B; }
.tc-boundary { background: #FEF3C7; color: #92400E; }
.tc-exception { background: #FCE7F3; color: #9D174D; }

.testcase-priority {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
}
.prio-P0 { background: #FEE2E2; color: #991B1B; }
.prio-P1 { background: #FFFBEB; color: #92400E; }
.prio-P2 { background: #EBF5FF; color: #1E40AF; }
.prio-P3 { background: #F1F5F9; color: #475569; }

.testcase-category {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}
.cat-functional { background: #EEF2FF; color: #4338CA; }
.cat-security { background: #FEE2E2; color: #991B1B; }
.cat-performance { background: #FEF3C7; color: #92400E; }
.cat-compatibility { background: #D1FAE5; color: #065F46; }

.testcase-body { padding: 14px 16px; }

.testcase-row {
    display: flex;
    gap: 12px;
    margin-bottom: 8px;
    font-size: 13px;
}

.testcase-label {
    width: 80px;
    flex-shrink: 0;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.testcase-value { color: var(--color-text); flex: 1; }

.testcase-steps {
    background: #F8FAFC;
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-top: 6px;
}

.testcase-step {
    display: flex;
    gap: 8px;
    font-size: 13px;
    padding: 3px 0;
}

.step-num {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--color-border);
    color: var(--color-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

.testcase-expected {
    margin-top: 8px;
    padding: 8px 12px;
    background: #F0FDF4;
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-success);
    font-size: 13px;
}

.testcase-expected strong { color: var(--color-success); }

/* AI 合并用例的 Markdown 表格渲染 */
.expected-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 6px;
    font-size: 12px;
    background: #fff;
    border-radius: 4px;
    overflow: hidden;
}
.expected-table th,
.expected-table td {
    border: 1px solid #E2E8F0;
    padding: 4px 8px;
    text-align: left;
    vertical-align: top;
}
.expected-table th {
    background: #F1F5F9;
    font-weight: 600;
    color: #475569;
}
.expected-table td.tc-col-first {
    font-weight: 600;
    color: var(--color-primary);
    text-align: center;
    white-space: nowrap;
}
.expected-table tbody tr:nth-child(even) {
    background: #F8FAFC;
}

/* ==================== Toast ==================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    min-width: 280px;
    animation: slideIn 0.3s ease;
    border-left: 4px solid;
}

.toast.success { border-color: var(--color-success); }
.toast.error { border-color: var(--color-danger); }
.toast.info { border-color: var(--color-info); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ==================== 加载遮罩 ==================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.loading-content {
    background: var(--color-white);
    padding: 40px 60px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-content p { color: var(--color-text-secondary); font-size: 14px; }

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--color-text-light);
}

.empty-state svg { margin-bottom: 16px; opacity: 0.4; }
.empty-state h3 { font-size: 16px; margin-bottom: 8px; color: var(--color-text-secondary); }
.empty-state p { font-size: 14px; }

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .analysis-overview { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { width: 60px; }
    .sidebar-header .logo span,
    .nav-item span:not(.nav-badge),
    .sidebar-footer { display: none; }
    .main-content { padding: 20px 20px 56px; }
    .analysis-overview { grid-template-columns: 1fr; }
    .analysis-options { flex-direction: column; gap: 8px; }
}

/* ==================== 滚动条 ==================== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94A3B8; }

.sidebar ::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); }
.sidebar ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.3); }

/* ==================== 网站底部备案信息（侧边栏内） ==================== */
.site-footer {
    padding: 14px 14px 16px;
    margin-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.08);   /* 在深色 sidebar 上的细分隔线 */
    color: rgba(255,255,255,0.55);                   /* 浅色文字，适配 sidebar 深色背景 */
    font-size: 11px;
    line-height: 1.5;
}
.site-footer a {
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    transition: color 0.15s;
}
.site-footer a:hover {
    color: #FFFFFF;   /* 悬停变白，反馈明显 */
}
.site-footer-gov {
    margin-top: 6px;
    display: flex;
    align-items: center;
    gap: 5px;
}
.site-footer-gov-icon {
    height: 14px;
    width: 14px;
    flex-shrink: 0;
    filter: drop-shadow(0 0 2px rgba(0,0,0,0.4));   /* 加微弱阴影，在深色背景上更突出 */
    opacity: 0.7;
}
@media (max-width: 768px) {
    /* 移动端侧边栏折叠成 60px 宽，备案号随 sidebar-footer 一起隐藏 */
    .site-footer { display: none; }
}

/* ==================== 多用户：登录/改密弹窗 ==================== */
.auth-overlay {
    position: fixed; inset: 0; z-index: 2000;
    display: flex; align-items: center; justify-content: center;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(4px);
}

.auth-box {
    width: 380px; max-width: calc(100vw - 32px);
    background: var(--color-bg, #FFFFFF);
    border-radius: 14px;
    padding: 32px 28px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
}

.auth-logo { text-align: center; margin-bottom: 22px; }
.auth-logo h2 { font-size: 18px; margin-top: 10px; color: var(--color-text-primary, #1E293B); }

.auth-tabs {
    display: flex; gap: 6px;
    background: #F1F5F9; border-radius: 10px; padding: 4px;
    margin-bottom: 18px;
}
.auth-tab {
    flex: 1; padding: 8px 0; font-size: 14px; font-weight: 500;
    border: none; background: transparent; color: #64748B;
    border-radius: 8px; cursor: pointer; transition: all 0.15s;
}
.auth-tab.active { background: #FFFFFF; color: #4F46E5; box-shadow: 0 1px 3px rgba(15, 23, 42, 0.1); }

.auth-tip {
    font-size: 13px; color: var(--color-text-secondary, #64748B);
    background: #EEF2FF; border: 1px solid #E0E7FF;
    border-radius: 8px; padding: 8px 12px; margin-bottom: 16px;
}

.auth-field { margin-bottom: 16px; }
.auth-field label {
    display: block; font-size: 13px; font-weight: 500;
    color: var(--color-text-secondary, #64748B); margin-bottom: 6px;
}
.auth-field input {
    width: 100%; box-sizing: border-box;
    padding: 10px 12px; font-size: 14px;
    border: 1px solid #CBD5E1; border-radius: 8px; outline: none;
    background: var(--color-bg, #FFFFFF); color: var(--color-text-primary, #1E293B);
    transition: border-color 0.15s, box-shadow 0.15s;
}
.auth-field input:focus { border-color: #4F46E5; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12); }

.auth-error {
    background: #FEF2F2; border: 1px solid #FECACA; color: #DC2626;
    font-size: 13px; border-radius: 8px; padding: 8px 12px; margin-bottom: 14px;
}

.auth-submit { width: 100%; padding: 11px 0; font-size: 15px; justify-content: center; }
.auth-close { width: 100%; margin-top: 8px; }

/* ==================== 用例编辑弹窗 ==================== */
.edit-box {
    width: 600px;
    max-width: calc(100vw - 32px);
    max-height: calc(100vh - 40px);
    overflow-y: auto;
}

.edit-box .auth-logo { margin-bottom: 14px; }
.edit-case-id {
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-text-secondary, #64748B);
}
.edit-case-id span {
    font-family: 'Consolas', 'Monaco', monospace;
    font-weight: 700;
    color: var(--color-primary, #4F46E5);
}

.edit-row { display: flex; gap: 12px; }
.edit-col { flex: 1; min-width: 0; }

.auth-field textarea.edit-textarea {
    width: 100%;
    box-sizing: border-box;
    min-height: 64px;
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.6;
    font-family: inherit;
    border: 1px solid #CBD5E1;
    border-radius: 8px;
    outline: none;
    background: var(--color-bg, #FFFFFF);
    color: var(--color-text-primary, #1E293B);
    resize: vertical;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.auth-field textarea.edit-textarea:focus {
    border-color: #4F46E5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.edit-steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 8px;
    max-height: 240px;
    overflow-y: auto;
}

.edit-step-row {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.edit-step-num {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    margin-top: 8px;
    border-radius: 50%;
    background: #EEF2FF;
    color: var(--color-primary, #4F46E5);
    font-size: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}
.edit-step-input {
    flex: 1;
    min-height: 38px;
    padding: 8px 10px;
    font-size: 13px;
    line-height: 1.5;
    font-family: inherit;
    border: 1px solid #CBD5E1;
    border-radius: 8px;
    outline: none;
    background: var(--color-bg, #FFFFFF);
    color: var(--color-text-primary, #1E293B);
    resize: vertical;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.edit-step-input:focus {
    border-color: #4F46E5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}
.edit-step-remove {
    flex-shrink: 0;
    margin-top: 6px;
    padding: 6px 10px;
    font-size: 12px;
    color: #DC2626;
    background: #FEF2F2;
    border: 1px solid #FECACA;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
}
.edit-step-remove:hover { background: #FEE2E2; }

.edit-add-step { width: 100%; justify-content: center; }

.edit-actions {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}
.edit-save-btn { flex: 1; justify-content: center; }
.edit-cancel-btn { flex: 1; justify-content: center; }

/* 用例卡片「编辑」按钮 */
.tc-edit-btn {
    flex-shrink: 0;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--color-primary, #4F46E5);
    background: transparent;
    border: 1px solid var(--color-primary, #4F46E5);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}
.tc-edit-btn:hover {
    background: var(--color-primary, #4F46E5);
    color: #FFFFFF;
}

/* 「已修改」状态徽章 */
.testcase-modified {
    flex-shrink: 0;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 600;
    background: #FEF3C7;
    color: #92400E;
}

/* ==================== 多用户：侧边栏用户区 ==================== */
.user-chip {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 10px; margin-top: 8px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 10px;
}

.user-avatar {
    width: 28px; height: 28px; border-radius: 50%;
    background: #4F46E5; color: #FFFFFF;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700; flex-shrink: 0;
}

.user-name {
    flex: 1; font-size: 13px; color: rgba(255, 255, 255, 0.9);
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.user-logout {
    border: none; background: transparent; cursor: pointer;
    color: rgba(255, 255, 255, 0.65); font-size: 12px; padding: 4px 6px;
    border-radius: 6px; transition: all 0.15s; flex-shrink: 0;
}
.user-logout:hover { color: #FFFFFF; background: rgba(255, 255, 255, 0.12); }

/* ==================== 历史记录页 ==================== */
.history-loading {
    text-align: center; padding: 50px 20px;
    color: var(--color-text-light, #94A3B8); font-size: 14px;
}

.history-item {
    display: flex; align-items: center; gap: 16px;
    background: var(--color-bg, #FFFFFF);
    border: 1px solid #E2E8F0; border-radius: 12px;
    padding: 14px 18px; margin-bottom: 10px;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.history-item:hover {
    border-color: #C7D2FE;
    box-shadow: 0 2px 10px rgba(79, 70, 229, 0.08);
}

.history-item-main { flex: 1; min-width: 0; }

.history-item-title {
    font-size: 14px; font-weight: 600;
    color: var(--color-text-primary, #1E293B);
    margin-bottom: 6px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.history-item-meta {
    display: flex; gap: 14px; flex-wrap: wrap;
    font-size: 12px; color: var(--color-text-light, #94A3B8);
}

.history-item-actions {
    display: flex; gap: 6px; flex-shrink: 0; align-items: center;
}

.history-item-actions .hist-export { min-width: 114px; padding-right: 26px; }

.history-item-actions .act-delete:hover { color: #DC2626; border-color: #FECACA; }

/* ==================== 管理后台 ==================== */
.admin-stats {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
    margin-bottom: 20px;
}
@media (max-width: 900px) { .admin-stats { grid-template-columns: repeat(2, 1fr); } }

.admin-stat-card {
    background: var(--color-bg, #FFFFFF);
    border: 1px solid #E2E8F0; border-radius: 12px;
    padding: 18px 20px;
}
.admin-stat-value { font-size: 28px; font-weight: 700; color: #4F46E5; line-height: 1.1; }
.admin-stat-label { font-size: 13px; color: var(--color-text-light, #94A3B8); margin-top: 6px; }

.admin-tabs { display: flex; gap: 8px; border-bottom: 1px solid #E2E8F0; margin-bottom: 16px; }
.admin-tab {
    border: none; background: transparent; cursor: pointer;
    padding: 10px 18px; font-size: 14px; font-weight: 500;
    color: var(--color-text-secondary, #64748B);
    border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.admin-tab.active { color: #4F46E5; border-bottom-color: #4F46E5; }

.admin-panel { display: none; }
.admin-panel.active { display: block; }

.admin-create-user {
    display: flex; gap: 10px; flex-wrap: wrap;
    margin-bottom: 16px; align-items: center;
}
.admin-input {
    padding: 9px 12px; font-size: 14px;
    border: 1px solid #CBD5E1; border-radius: 8px; outline: none;
    background: var(--color-bg, #FFFFFF); color: var(--color-text-primary, #1E293B);
    min-width: 160px; flex: 1;
}
.admin-input:focus { border-color: #4F46E5; box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12); }

.admin-search { max-width: 420px; margin-bottom: 16px; }

.admin-table {
    width: 100%; border-collapse: collapse; font-size: 13px;
    background: var(--color-bg, #FFFFFF);
    border: 1px solid #E2E8F0; border-radius: 12px; overflow: hidden;
}
.admin-table th, .admin-table td {
    text-align: left; padding: 12px 14px; border-bottom: 1px solid #EEF2F7;
}
.admin-table th {
    background: #F8FAFC; color: var(--color-text-secondary, #64748B);
    font-weight: 600; font-size: 12px;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: #FAFBFF; }

.admin-badge {
    display: inline-block; padding: 3px 10px; border-radius: 999px;
    font-size: 12px; background: #EEF2FF; color: #4F46E5;
}
.admin-role-admin { background: #FEF3C7; color: #B45309; }
.admin-must-pwd { background: #FEE2E2; color: #DC2626; }
.admin-ok { background: #DCFCE7; color: #16A34A; }

/* ==================== AI 功能样式 ==================== */

/* AI 按钮（渐变紫） */
.btn-ai {
    background: linear-gradient(135deg, #7C3AED 0%, #6366F1 100%);
    color: #FFFFFF;
    border: none;
}
.btn-ai:hover {
    background: linear-gradient(135deg, #6D28D9 0%, #4F46E5 100%);
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}
.btn-ai:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* AI 优化下拉按钮 */
.dropdown {
    position: relative;
    display: inline-block;
}
.dropdown-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.dropdown-arrow {
    transition: transform 0.2s ease;
}
.dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 320px;
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    overflow: hidden;
}
.dropdown.open .dropdown-menu {
    display: block;
}
.dropdown-item {
    padding: 10px 14px;
    cursor: pointer;
    transition: background 0.15s ease;
    border-bottom: 1px solid #F1F5F9;
}
.dropdown-item:last-child {
    border-bottom: none;
}
.dropdown-item:hover {
    background: #F8FAFC;
}
.dropdown-item-title {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #1E293B;
    margin-bottom: 2px;
}
.dropdown-item-desc {
    display: block;
    font-size: 11px;
    color: #64748B;
    line-height: 1.4;
}

/* AI 设置弹窗中的下拉框 */
.ai-settings-select {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid #CBD5E1;
    border-radius: 8px;
    outline: none;
    background: #FFFFFF;
    color: #1E293B;
    transition: border-color 0.15s, box-shadow 0.15s;
    cursor: pointer;
}
.ai-settings-select:focus {
    border-color: #7C3AED;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
}

/* AI 流式输出弹窗 */
.ai-stream-box {
    width: 680px;
    max-width: calc(100vw - 32px);
    max-height: 80vh;
    background: #FFFFFF;
    border-radius: 14px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.ai-stream-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid #E2E8F0;
    background: linear-gradient(135deg, #F5F3FF 0%, #EEF2FF 100%);
}

.ai-stream-title {
    font-size: 15px;
    font-weight: 600;
    color: #4F46E5;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-stream-title::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #7C3AED;
    animation: ai-pulse 1.2s ease-in-out infinite;
}

@keyframes ai-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.3); }
}

.ai-stream-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    font-size: 13px;
    line-height: 1.8;
    color: #1E293B;
    white-space: pre-wrap;
    word-break: break-word;
    font-family: 'Consolas', 'Monaco', 'Microsoft YaHei', monospace;
    background: #FAFBFC;
}

/* AI 增强分析结果卡片 */
.ai-result-card {
    background: linear-gradient(135deg, #F5F3FF 0%, #FFFFFF 100%);
    border: 1px solid #DDD6FE;
    border-radius: 12px;
    margin-bottom: 16px;
    overflow: hidden;
}

.ai-result-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: linear-gradient(135deg, #7C3AED 0%, #6366F1 100%);
    color: #FFFFFF;
    font-size: 14px;
    font-weight: 600;
}

.ai-result-card-header .ai-badge {
    background: rgba(255, 255, 255, 0.25);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}

.ai-result-card-body {
    padding: 16px 18px;
}

.ai-insight-text {
    font-size: 13px;
    color: #4F46E5;
    background: #EEF2FF;
    padding: 10px 14px;
    border-radius: 8px;
    margin-bottom: 12px;
    line-height: 1.7;
}

/* AI 补充功能点 */
.ai-func-point {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid #F1F5F9;
}
.ai-func-point:last-child { border-bottom: none; }

.ai-func-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #7C3AED;
    color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    flex-shrink: 0;
}

.ai-func-content { flex: 1; }
.ai-func-title { font-size: 13px; font-weight: 600; color: #1E293B; margin-bottom: 3px; }
.ai-func-desc { font-size: 12px; color: #64748B; line-height: 1.5; }
.ai-func-reason { font-size: 11px; color: #7C3AED; margin-top: 4px; font-style: italic; }

/* AI 用例工具栏 */
.ai-cases-toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #F5F3FF 0%, #EEF2FF 100%);
    border: 1px solid #DDD6FE;
    border-radius: 10px;
}

.ai-cases-toolbar-info {
    flex: 1;
    font-size: 13px;
    color: #4F46E5;
    font-weight: 500;
}

.ai-cases-toolbar .btn { white-space: nowrap; }

/* AI 用例标记 */
.testcase-card.ai-generated {
    border-color: #DDD6FE;
}
.testcase-card.ai-generated .testcase-header {
    background: linear-gradient(135deg, #F5F3FF 0%, #EEF2FF 100%);
}
.testcase-card.ai-generated .testcase-id {
    background: #EDE9FE;
    color: #7C3AED;
}