/* ============================================================
   成都农村产权交易所 · 密码安全管理系统
   UI Design v2.0 — 政务安全风格
   ============================================================ */

/* ---- 设计令牌 ---- */
:root {
    /* 主色系 */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;

    /* 语义色 */
    --success: #16a34a;
    --success-light: #dcfce7;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --info: #0891b2;
    --info-light: #cffafe;

    /* 中性色 */
    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;

    /* 布局 */
    --sidebar-width: 260px;
    --sidebar-collapsed: 72px;
    --topbar-height: 60px;
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    /* 阴影 */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-md: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.06);
    --shadow-xl: 0 25px 50px -12px rgba(0,0,0,0.25);

    /* 过渡 */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- 基础重置 ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: "Inter", -apple-system, "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
    background: var(--slate-100);
    color: var(--slate-700);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

/* 滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--slate-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--slate-400); }

/* ============================================================
   登录页
   ============================================================ */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    background: var(--slate-900);
    overflow: hidden;
}

/* 左侧品牌区 */
.login-brand {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 60px;
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 40%, #1e3a5f 100%);
    overflow: hidden;
}
.login-brand::before {
    content: '';
    position: absolute;
    top: -50%; left: -20%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.login-brand::after {
    content: '';
    position: absolute;
    bottom: -30%; right: -10%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(8,145,178,0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.login-brand-content { position: relative; z-index: 1; max-width: 480px; }
.login-brand .brand-shield {
    width: 64px; height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
    border-radius: var(--radius-lg);
    display: flex; align-items: center; justify-content: center;
    font-size: 32px; margin-bottom: 32px;
    box-shadow: 0 8px 32px rgba(37,99,235,0.3);
}
.login-brand h1 {
    font-size: 28px; font-weight: 700; color: #fff;
    margin-bottom: 12px; letter-spacing: -0.5px;
}
.login-brand .brand-subtitle {
    font-size: 15px; color: var(--slate-400); margin-bottom: 40px;
    line-height: 1.7;
}
.login-brand .feature-list { list-style: none; }
.login-brand .feature-list li {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 0; color: var(--slate-300); font-size: 14px;
}
.login-brand .feature-list li .feat-icon {
    width: 32px; height: 32px; border-radius: var(--radius-sm);
    background: rgba(37,99,235,0.15); display: flex;
    align-items: center; justify-content: center; font-size: 16px;
    flex-shrink: 0;
}
.login-brand .brand-footer {
    position: absolute; bottom: 40px; left: 60px;
    color: var(--slate-500); font-size: 12px; z-index: 1;
}

/* 右侧表单区 */
.login-form-side {
    width: 520px;
    display: flex; align-items: center; justify-content: center;
    background: #fff;
    padding: 60px;
}
.login-card { width: 100%; max-width: 380px; }
.login-card .form-title {
    font-size: 24px; font-weight: 700; color: var(--slate-900);
    margin-bottom: 8px;
}
.login-card .form-subtitle {
    color: var(--slate-500); font-size: 14px; margin-bottom: 32px;
}
.login-card .form-group { margin-bottom: 22px; }
.login-card label {
    font-weight: 600; color: var(--slate-700);
    margin-bottom: 8px; display: block; font-size: 13px;
}
.login-card .input-wrap { position: relative; }
.login-card .input-wrap .input-icon {
    position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
    font-size: 16px; color: var(--slate-400); pointer-events: none;
}
.login-card input {
    width: 100%; padding: 12px 14px 12px 42px;
    border: 2px solid var(--slate-200); border-radius: var(--radius);
    font-size: 14px; transition: var(--transition); background: var(--slate-50);
}
.login-card input:focus {
    outline: none; border-color: var(--primary); background: #fff;
    box-shadow: 0 0 0 4px rgba(37,99,235,0.1);
}
.login-card .btn-login {
    width: 100%; padding: 13px; border: none; border-radius: var(--radius);
    font-size: 15px; font-weight: 600; cursor: pointer;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff; transition: var(--transition);
    box-shadow: 0 4px 14px rgba(37,99,235,0.3);
}
.login-card .btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37,99,235,0.4);
}
.login-card .btn-login:active { transform: translateY(0); }
.login-card .demo-accounts {
    margin-top: 28px; padding: 16px;
    background: var(--slate-50); border-radius: var(--radius);
    border: 1px solid var(--slate-200);
}
.login-card .demo-accounts .demo-title {
    font-size: 12px; font-weight: 600; color: var(--slate-600);
    margin-bottom: 8px; display: flex; align-items: center; gap: 6px;
}
.login-card .demo-accounts .demo-item {
    display: flex; align-items: center; gap: 8px;
    padding: 4px 0; font-size: 12px; color: var(--slate-500);
}
.login-card .demo-accounts .demo-item .demo-badge {
    padding: 2px 8px; border-radius: 4px; font-size: 11px; font-weight: 600;
}
.login-card .demo-accounts .demo-item .demo-badge.admin { background: var(--primary-100); color: var(--primary-dark); }
.login-card .demo-accounts .demo-item .demo-badge.operator { background: var(--success-light); color: var(--success); }
.login-card .demo-accounts .demo-item .demo-badge.auditor { background: var(--warning-light); color: #92400e; }

/* 算法标签 */
.algo-tags { display: flex; gap: 8px; margin-top: 24px; flex-wrap: wrap; }
.algo-tag {
    padding: 4px 12px; border-radius: 20px; font-size: 11px; font-weight: 600;
    background: var(--slate-100); color: var(--slate-600);
    border: 1px solid var(--slate-200);
}

/* ============================================================
   主布局
   ============================================================ */
.app-layout { display: flex; min-height: 100vh; }

/* ---- 侧边栏 ---- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--slate-900);
    color: #fff;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 1000;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
}
.sidebar::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 200px;
    background: linear-gradient(180deg, rgba(37,99,235,0.08) 0%, transparent 100%);
    pointer-events: none;
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    display: flex; align-items: center; gap: 12px;
    position: relative; z-index: 1;
    flex-shrink: 0;
}
.sidebar-header .sidebar-logo {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
    border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}
.sidebar-header .sidebar-text { overflow: hidden; }
.sidebar-header h2 {
    font-size: 15px; font-weight: 700; white-space: nowrap;
    letter-spacing: -0.3px;
}
.sidebar-header p {
    font-size: 11px; color: var(--slate-400); margin-top: 2px;
    white-space: nowrap;
}

/* 导航 */
.sidebar-nav { padding: 8px 12px; flex: 1; position: relative; z-index: 1; }
.sidebar-nav .nav-section-title {
    padding: 16px 12px 6px;
    font-size: 10px; text-transform: uppercase;
    color: var(--slate-500); letter-spacing: 1.5px; font-weight: 700;
}
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 12px; color: var(--slate-400);
    text-decoration: none; font-size: 13px; font-weight: 500;
    transition: var(--transition);
    border-radius: var(--radius-sm);
    margin-bottom: 2px; position: relative;
}
.sidebar-nav a:hover {
    background: rgba(255,255,255,0.05);
    color: #fff;
}
.sidebar-nav a.active {
    background: linear-gradient(135deg, rgba(37,99,235,0.2) 0%, rgba(37,99,235,0.1) 100%);
    color: #fff;
}
.sidebar-nav a.active::before {
    content: '';
    position: absolute; left: 0; top: 50%; transform: translateY(-50%);
    width: 3px; height: 20px;
    background: var(--primary-light);
    border-radius: 0 3px 3px 0;
}
.sidebar-nav a .nav-icon {
    width: 20px; text-align: center; font-size: 15px; flex-shrink: 0;
}
.sidebar-nav a .badge-count {
    margin-left: auto;
    background: var(--danger); color: #fff;
    border-radius: 10px; padding: 1px 8px;
    font-size: 11px; font-weight: 600;
    box-shadow: 0 2px 8px rgba(220,38,38,0.3);
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0; position: relative; z-index: 1;
}
.sidebar-footer .sys-info {
    font-size: 11px; color: var(--slate-500); line-height: 1.6;
}
.sidebar-footer .sys-info .sys-version {
    display: inline-block; padding: 2px 8px;
    background: rgba(255,255,255,0.08); border-radius: 4px;
    color: var(--slate-300); font-weight: 600;
}

/* ---- 主内容 ---- */
.main-content {
    flex: 1; margin-left: var(--sidebar-width);
    display: flex; flex-direction: column;
    min-height: 100vh;
    transition: var(--transition-slow);
}

/* ---- 顶部栏 ---- */
.topbar {
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0 28px; height: var(--topbar-height);
    display: flex; align-items: center; justify-content: space-between;
    border-bottom: 1px solid var(--slate-200);
    position: sticky; top: 0; z-index: 100;
}
.topbar-left { display: flex; align-items: center; gap: 16px; }
.topbar-left .mobile-menu-btn {
    display: none; background: none; border: none;
    font-size: 20px; cursor: pointer; color: var(--slate-700);
    padding: 4px;
}
.topbar-left h3 {
    font-size: 18px; font-weight: 700; color: var(--slate-900);
    letter-spacing: -0.3px;
}
.topbar-left .breadcrumb {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--slate-400); margin-top: 2px;
}
.topbar-right { display: flex; align-items: center; gap: 20px; }

/* 通知 */
.topbar-right .notification-bell {
    position: relative; cursor: pointer; font-size: 18px;
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}
.topbar-right .notification-bell:hover { background: var(--slate-100); }
.topbar-right .notification-bell .badge {
    position: absolute; top: 4px; right: 4px;
    background: var(--danger); color: #fff;
    border-radius: 10px; padding: 0 5px; font-size: 10px;
    min-width: 16px; height: 16px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; border: 2px solid #fff;
}

/* 用户信息 */
.topbar-right .user-info {
    display: flex; align-items: center; gap: 10px;
    padding: 4px 12px 4px 4px; border-radius: var(--radius);
    transition: var(--transition); cursor: pointer;
}
.topbar-right .user-info:hover { background: var(--slate-100); }
.topbar-right .user-info .avatar {
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--primary) 0%, var(--info) 100%);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 700;
    box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}
.topbar-right .user-info .user-name { font-size: 13px; font-weight: 600; color: var(--slate-800); }
.topbar-right .user-info .user-role { font-size: 11px; color: var(--slate-500); }

/* ---- 内容容器 ---- */
.content-area { padding: 28px; flex: 1; }

/* ============================================================
   卡片
   ============================================================ */
.card {
    background: #fff; border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    overflow: hidden;
    transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-header {
    padding: 16px 24px; border-bottom: 1px solid var(--slate-200);
    display: flex; align-items: center; justify-content: space-between;
    background: var(--slate-50);
}
.card-header h4 { font-size: 15px; font-weight: 700; color: var(--slate-800); display: flex; align-items: center; gap: 8px; }
.card-body { padding: 24px; }

/* ============================================================
   统计卡片
   ============================================================ */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px; margin-bottom: 28px;
}
.stat-card {
    background: #fff; border-radius: var(--radius-lg);
    padding: 24px; box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    display: flex; align-items: center; gap: 18px;
    transition: var(--transition);
    position: relative; overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--slate-300);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-card .stat-icon {
    width: 52px; height: 52px; border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; flex-shrink: 0;
}
.stat-card .stat-icon.blue { background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%); color: #2563eb; }
.stat-card .stat-icon.blue::before { background: linear-gradient(90deg, #2563eb, #3b82f6); }
.stat-card .stat-icon.green { background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%); color: #16a34a; }
.stat-card .stat-icon.green::before { background: linear-gradient(90deg, #16a34a, #22c55e); }
.stat-card .stat-icon.orange { background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%); color: #d97706; }
.stat-card .stat-icon.orange::before { background: linear-gradient(90deg, #d97706, #f59e0b); }
.stat-card .stat-icon.red { background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%); color: #dc2626; }
.stat-card .stat-icon.red::before { background: linear-gradient(90deg, #dc2626, #ef4444); }
.stat-card .stat-icon.purple { background: linear-gradient(135deg, #f3e8ff 0%, #e9d5ff 100%); color: #9333ea; }
.stat-card .stat-icon.purple::before { background: linear-gradient(90deg, #9333ea, #a855f7); }
.stat-card .stat-info .stat-value {
    font-size: 32px; font-weight: 800; line-height: 1;
    color: var(--slate-900); letter-spacing: -1px;
}
.stat-card .stat-info .stat-label {
    font-size: 12px; color: var(--slate-500); margin-top: 6px;
    font-weight: 500;
}

/* ============================================================
   表格
   ============================================================ */
.table { width: 100%; border-collapse: collapse; }
.table th {
    text-align: left; padding: 12px 16px;
    font-size: 11px; font-weight: 700;
    color: var(--slate-500); text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--slate-200);
    background: var(--slate-50);
    white-space: nowrap;
}
.table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--slate-100);
    font-size: 13px; color: var(--slate-700);
}
.table tbody tr { transition: var(--transition); }
.table tbody tr:hover { background: var(--slate-50); }
.table .text-center { text-align: center; }
.table .text-right { text-align: right; }
.table .text-mono { font-family: "SF Mono", "Fira Code", monospace; font-size: 12px; }

/* ============================================================
   徽章/标签
   ============================================================ */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 20px;
    font-size: 11px; font-weight: 600; line-height: 1.5;
    white-space: nowrap;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: #92400e; }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-info { background: var(--info-light); color: var(--info); }
.badge-secondary { background: var(--slate-100); color: var(--slate-600); }
.badge-primary { background: var(--primary-100); color: var(--primary-dark); }

/* ============================================================
   按钮
   ============================================================ */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 9px 18px; border: none; border-radius: var(--radius);
    font-size: 13px; font-weight: 600; cursor: pointer;
    text-decoration: none; transition: var(--transition);
    white-space: nowrap; line-height: 1.4;
}
.btn-primary {
    background: var(--primary); color: #fff;
    box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}
.btn-primary:hover {
    background: var(--primary-dark); color: #fff;
    box-shadow: 0 4px 12px rgba(37,99,235,0.3);
    transform: translateY(-1px);
}
.btn-success {
    background: var(--success); color: #fff;
    box-shadow: 0 2px 8px rgba(22,163,74,0.2);
}
.btn-success:hover { background: #15803d; color: #fff; transform: translateY(-1px); }
.btn-warning { background: var(--warning); color: #fff; box-shadow: 0 2px 8px rgba(245,158,11,0.2); }
.btn-warning:hover { background: #d97706; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; box-shadow: 0 2px 8px rgba(220,38,38,0.2); }
.btn-danger:hover { background: #b91c1c; color: #fff; transform: translateY(-1px); }
.btn-secondary { background: var(--slate-100); color: var(--slate-600); border: 1px solid var(--slate-200); }
.btn-secondary:hover { background: var(--slate-200); color: var(--slate-700); }
.btn-outline { background: transparent; border: 1.5px solid var(--slate-200); color: var(--slate-600); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-50); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-lg { padding: 13px 28px; font-size: 15px; }

/* ============================================================
   表单
   ============================================================ */
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block; font-weight: 600; color: var(--slate-700);
    margin-bottom: 8px; font-size: 13px;
}
.form-group label .required { color: var(--danger); }
.form-control {
    width: 100%; padding: 10px 14px;
    border: 2px solid var(--slate-200); border-radius: var(--radius);
    font-size: 14px; transition: var(--transition);
    background: var(--slate-50); color: var(--slate-800);
    font-family: inherit;
}
.form-control:focus {
    outline: none; border-color: var(--primary); background: #fff;
    box-shadow: 0 0 0 4px rgba(37,99,235,0.08);
}
.form-control:disabled { background: var(--slate-100); color: var(--slate-400); cursor: not-allowed; }
select.form-control { cursor: pointer; }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-text {
    font-size: 12px; color: var(--slate-400); margin-top: 6px;
    display: flex; align-items: center; gap: 4px;
}
.form-check { display: flex; align-items: center; gap: 8px; }
.form-check input { width: 16px; height: 16px; cursor: pointer; }
textarea.form-control { min-height: 100px; resize: vertical; }

/* ============================================================
   警告提示
   ============================================================ */
.alert {
    padding: 14px 18px; border-radius: var(--radius);
    margin-bottom: 16px; font-size: 13px;
    display: flex; align-items: center; gap: 10px;
    border: 1px solid transparent;
}
.alert-success { background: var(--success-light); color: #15803d; border-color: #bbf7d0; }
.alert-warning { background: var(--warning-light); color: #92400e; border-color: #fde68a; }
.alert-danger { background: var(--danger-light); color: #b91c1c; border-color: #fecaca; }
.alert-info { background: var(--primary-50); color: var(--primary-dark); border-color: var(--primary-100); }

/* ============================================================
   分页
   ============================================================ */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 24px; }
.pagination a, .pagination span {
    padding: 8px 14px; border: 1px solid var(--slate-200);
    border-radius: var(--radius-sm); text-decoration: none;
    font-size: 13px; color: var(--slate-600); font-weight: 500;
    transition: var(--transition);
}
.pagination a:hover { background: var(--slate-50); border-color: var(--slate-300); }
.pagination .current {
    background: var(--primary); color: #fff;
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}

/* ============================================================
   详情页
   ============================================================ */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
.detail-item {
    padding: 14px 0; border-bottom: 1px solid var(--slate-100);
    display: flex; flex-direction: column; gap: 4px;
}
.detail-item .detail-label {
    font-size: 11px; color: var(--slate-400);
    text-transform: uppercase; letter-spacing: 0.5px; font-weight: 600;
}
.detail-item .detail-value { font-size: 14px; font-weight: 600; color: var(--slate-800); }

/* ============================================================
   时间线
   ============================================================ */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
    content: ''; position: absolute; left: 8px; top: 4px; bottom: 4px;
    width: 2px; background: var(--slate-200); border-radius: 1px;
}
.timeline-item { position: relative; padding-bottom: 24px; }
.timeline-item::before {
    content: ''; position: absolute; left: -24px; top: 4px;
    width: 12px; height: 12px; border-radius: 50%;
    background: var(--primary); border: 2px solid #fff;
    box-shadow: 0 0 0 2px var(--primary-100);
}
.timeline-item .timeline-time { font-size: 12px; color: var(--slate-400); font-weight: 500; }
.timeline-item .timeline-content { font-size: 13px; margin-top: 6px; color: var(--slate-700); }

/* ============================================================
   通知下拉
   ============================================================ */
.notification-dropdown {
    position: absolute; right: 0; top: calc(100% + 8px);
    width: 360px; background: #fff;
    border: 1px solid var(--slate-200); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl); z-index: 1000;
    max-height: 440px; overflow-y: auto;
}
.notification-dropdown .notif-item {
    padding: 14px 18px; border-bottom: 1px solid var(--slate-100);
    cursor: pointer; transition: var(--transition);
}
.notification-dropdown .notif-item:hover { background: var(--slate-50); }
.notification-dropdown .notif-item .notif-title { font-size: 13px; font-weight: 600; color: var(--slate-800); }
.notification-dropdown .notif-item .notif-content { font-size: 12px; color: var(--slate-500); margin-top: 4px; }
.notification-dropdown .notif-item .notif-time { font-size: 11px; color: var(--slate-400); margin-top: 6px; }

/* ============================================================
   空状态
   ============================================================ */
.empty-state { text-align: center; padding: 48px 20px; color: var(--slate-400); }
.empty-state .empty-icon { font-size: 56px; margin-bottom: 16px; opacity: 0.6; }
.empty-state .empty-text { font-size: 14px; font-weight: 500; }

/* ============================================================
   工具类
   ============================================================ */
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--slate-400); }
.font-mono { font-family: "SF Mono", "Fira Code", monospace; }

/* 过滤栏 */
.filter-bar {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 20px; gap: 12px; flex-wrap: wrap;
}
.filter-bar .filter-tabs { display: flex; gap: 4px; }
.filter-bar .filter-tabs a {
    padding: 7px 16px; border-radius: var(--radius);
    font-size: 13px; font-weight: 600; transition: var(--transition);
    border: 1px solid var(--slate-200); color: var(--slate-600);
    background: #fff;
}
.filter-bar .filter-tabs a:hover { border-color: var(--slate-300); color: var(--slate-800); }
.filter-bar .filter-tabs a.active {
    background: var(--primary); color: #fff; border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(37,99,235,0.2);
}

/* 页面标题区 */
.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px;
}
.page-header .page-title-area h2 {
    font-size: 22px; font-weight: 800; color: var(--slate-900);
    letter-spacing: -0.5px;
}
.page-header .page-title-area .page-desc {
    font-size: 13px; color: var(--slate-500); margin-top: 4px;
}

/* 制度条款提示 */
.compliance-hint {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: 4px;
    background: var(--primary-50); color: var(--primary-dark);
    font-size: 11px; font-weight: 600;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1024px) {
    .login-brand { display: none; }
    .login-form-side { width: 100%; }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: var(--shadow-xl);
    }
    .sidebar.show { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .topbar-left .mobile-menu-btn { display: flex; }
    .topbar-left h3 { font-size: 16px; }
    .detail-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
    .content-area { padding: 16px; }
    .stat-grid { grid-template-columns: 1fr; }
    .topbar-right .user-info .user-name,
    .topbar-right .user-info .user-role { display: none; }
    .filter-bar { flex-direction: column; align-items: stretch; }
}

/* 遮罩层 */
.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.4); z-index: 999;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.show { display: block; }

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.content-area > * { animation: fadeIn 0.3s ease-out; }