/* ============================================
   学员管理 CRM 全局样式
   简约 · 高级 · 移动端适配
   ============================================ */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #eff6ff;
    --success: #059669;
    --success-bg: #ecfdf3;
    --warning: #d97706;
    --warning-bg: #fffbeb;
    --danger: #dc2626;
    --danger-bg: #fef2f2;
    --text: #1e293b;
    --text-2: #64748b;
    --text-3: #94a3b8;
    --border: #e2e8f0;
    --bg: #f5f6fa;
    --card: #ffffff;
    --sidebar-bg: #111827;
    --sidebar-text: #9ca3af;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(16, 24, 40, .06), 0 1px 2px rgba(16, 24, 40, .04);
    --shadow-lg: 0 8px 30px rgba(16, 24, 40, .12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* ---------- 布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
    width: 224px; flex-shrink: 0; background: var(--sidebar-bg);
    color: var(--sidebar-text); position: sticky; top: 0; height: 100vh;
    display: flex; flex-direction: column; z-index: 100;
}
.sidebar .brand {
    display: flex; align-items: center; gap: 10px;
    padding: 20px 20px 18px; color: #fff; font-weight: 700; font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar .brand svg { flex-shrink: 0; }
.sidebar nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar nav a {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 12px; margin-bottom: 2px; border-radius: 8px;
    color: var(--sidebar-text); font-size: 14px; transition: all .15s;
}
.sidebar nav a svg { flex-shrink: 0; opacity: .8; }
.sidebar nav a:hover { color: #fff; background: rgba(255,255,255,.06); }
.sidebar nav a.active { color: #fff; background: var(--primary); }
.sidebar nav .nav-group { font-size: 11px; text-transform: uppercase; letter-spacing: .5px; color: #6b7280; padding: 12px 12px 6px; }
.sidebar .side-user {
    padding: 14px 20px; border-top: 1px solid rgba(255,255,255,.08);
    font-size: 13px; color: #d1d5db;
}
.sidebar .side-user .role { font-size: 11px; color: #6b7280; margin-top: 2px; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
    background: var(--card); border-bottom: 1px solid var(--border);
    padding: 0 24px; height: 56px; display: flex; align-items: center;
    justify-content: space-between; position: sticky; top: 0; z-index: 90;
}
.topbar .page-title { font-size: 16px; font-weight: 700; }
.topbar .top-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.lang-switch a { padding: 5px 12px; font-size: 12px; color: var(--text-2); background: #fff; }
.lang-switch a.active { background: var(--primary); color: #fff; }
.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 6px; border-radius: 8px; color: var(--text); }
.menu-toggle:hover { background: var(--bg); }

.content { padding: 24px; flex: 1; }
.sidebar-mask { display: none; }

/* ---------- 卡片 ---------- */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-header {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.card-header h2 { font-size: 15px; font-weight: 700; }
.card-body { padding: 20px; }

/* ---------- 统计卡片 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 20px; }
.stat-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; display: flex; align-items: center; gap: 14px; }
.stat-card .icon { width: 44px; height: 44px; border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.stat-card .icon.blue { background: var(--primary-light); color: var(--primary); }
.stat-card .icon.green { background: var(--success-bg); color: var(--success); }
.stat-card .icon.amber { background: var(--warning-bg); color: var(--warning); }
.stat-card .icon.red { background: var(--danger-bg); color: var(--danger); }
.stat-card .label { font-size: 12px; color: var(--text-2); }
.stat-card .value { font-size: 22px; font-weight: 700; line-height: 1.3; }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 16px; border-radius: 8px; border: 1px solid transparent;
    font-size: 13px; font-weight: 600; cursor: pointer; transition: all .15s;
    background: var(--bg); color: var(--text); white-space: nowrap; user-select: none;
}
.btn:hover { background: #e8ebf2; color: var(--text); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; color: #fff; }
.btn-outline { background: #fff; border-color: var(--border); color: var(--text-2); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn-lg { padding: 11px 28px; font-size: 15px; }
.btn svg { flex-shrink: 0; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 20px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; }
.form-group label { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-group label .req { color: var(--danger); margin-left: 2px; }
input[type=text], input[type=password], input[type=date], input[type=datetime-local],
input[type=number], input[type=tel], select, textarea {
    width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
    font-size: 14px; font-family: inherit; color: var(--text); background: #fff;
    outline: none; transition: border .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
textarea { resize: vertical; min-height: 80px; }
input[readonly] { background: var(--bg); color: var(--text-2); }
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 16px; }
.filter-bar .form-group { min-width: 140px; }
.filter-bar label { margin-bottom: 4px; font-size: 12px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { padding: 11px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.table th { background: #f8fafc; color: var(--text-2); font-weight: 600; font-size: 12px; position: sticky; top: 0; }
.table tbody tr:hover { background: #f8fafc; }
.table td .cell-main { font-weight: 600; }
.table td .cell-sub { font-size: 12px; color: var(--text-3); }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table input[type=checkbox] { width: 16px; height: 16px; cursor: pointer; }
.empty-row td { text-align: center; color: var(--text-3); padding: 36px 0; }

/* ---------- 徽章 ---------- */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 10px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.consulting { background: var(--warning-bg); color: var(--warning); }
.badge.enrolled { background: var(--success-bg); color: var(--success); }
.badge.gray { background: #f1f5f9; color: var(--text-2); }
.badge.blue { background: var(--primary-light); color: var(--primary); }
.badge.red { background: var(--danger-bg); color: var(--danger); }

/* ---------- 头像 ---------- */
.avatar { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; background: var(--bg); border: 1px solid var(--border); }
.avatar-lg { width: 96px; height: 96px; border-radius: 12px; }
.photo-upload { display: flex; align-items: center; gap: 16px; }
.photo-upload .ph { width: 96px; height: 96px; border-radius: 12px; border: 1.5px dashed var(--border); display: flex; align-items: center; justify-content: center; color: var(--text-3); overflow: hidden; background: var(--bg); }
.photo-upload .ph img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- 分页 ---------- */
.pagination { display: flex; align-items: center; justify-content: flex-end; gap: 6px; padding: 14px 20px; flex-wrap: wrap; }
.pagination .info { margin-right: auto; font-size: 12px; color: var(--text-2); }
.pagination a, .pagination span.pg { display: inline-flex; min-width: 32px; height: 32px; align-items: center; justify-content: center; padding: 0 8px; border-radius: 8px; border: 1px solid var(--border); color: var(--text-2); font-size: 13px; background: #fff; }
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---------- 模态框 ---------- */
.modal-mask { display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, .5); z-index: 200; align-items: center; justify-content: center; padding: 20px; }
.modal-mask.show { display: flex; }
.modal { background: #fff; border-radius: 12px; width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; box-shadow: var(--shadow-lg); }
.modal-header { padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-header h3 { font-size: 15px; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--text-3); padding: 4px; border-radius: 6px; }
.modal-close:hover { background: var(--bg); color: var(--text); }
.modal-body { padding: 20px; }
.modal-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ---------- Toast ---------- */
.toast-wrap { position: fixed; top: 20px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 10px; }
.toast { padding: 12px 16px; border-radius: 10px; box-shadow: var(--shadow-lg); font-size: 13px; display: flex; align-items: center; gap: 8px; min-width: 220px; max-width: 360px; animation: toastIn .25s ease; }
.toast.ok { background: #065f46; color: #fff; }
.toast.err { background: #991b1b; color: #fff; }
.toast.info { background: #1e3a8a; color: #fff; }
@keyframes toastIn { from { transform: translateX(20px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---------- 时间线（跟进记录） ---------- */
.timeline { list-style: none; }
.timeline li { position: relative; padding: 0 0 20px 26px; border-left: 2px solid var(--border); margin-left: 8px; }
.timeline li:last-child { border-left-color: transparent; padding-bottom: 0; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: 3px; width: 12px; height: 12px; border-radius: 50%; background: var(--primary); border: 2px solid #fff; box-shadow: 0 0 0 2px var(--primary); }
.timeline li.remind::before { background: var(--warning); box-shadow: 0 0 0 2px var(--warning); }
.timeline .tl-head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 4px; }
.timeline .tl-time { font-size: 12px; color: var(--text-3); }
.timeline .tl-content { font-size: 13px; color: var(--text); white-space: pre-wrap; word-break: break-all; }

/* ---------- 详情页 ---------- */
.detail-grid { display: grid; grid-template-columns: 300px 1fr; gap: 20px; align-items: start; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 0; }
.kv > div { padding: 9px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.kv > div:nth-child(odd) { color: var(--text-2); }
.kv > div:nth-child(even) { font-weight: 500; word-break: break-all; }

/* ---------- 工具栏 ---------- */
.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.toolbar .spacer { flex: 1; }

/* ---------- 登录页 ---------- */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 100%); padding: 20px; }
.auth-card { background: #fff; border-radius: 16px; box-shadow: var(--shadow-lg); width: 100%; max-width: 400px; padding: 40px 36px; }
.auth-card .logo { display: flex; align-items: center; gap: 10px; justify-content: center; margin-bottom: 6px; font-size: 20px; font-weight: 700; color: var(--text); }
.auth-card .sub { text-align: center; color: var(--text-3); font-size: 13px; margin-bottom: 28px; }
.auth-card .form-group { margin-bottom: 16px; }
.auth-alert { background: var(--danger-bg); color: var(--danger); border: 1px solid #fecaca; padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 14px; display: none; }
.auth-lang { text-align: center; margin-top: 18px; font-size: 13px; }
.auth-lang a { margin: 0 8px; color: var(--text-3); }
.auth-lang a.active { color: var(--primary); font-weight: 700; }

/* ---------- 报表柱状图（纯 CSS） ---------- */
.bar-chart { display: flex; align-items: flex-end; gap: 18px; height: 220px; padding: 16px 8px 0; overflow-x: auto; }
.bar-group { display: flex; flex-direction: column; align-items: center; gap: 6px; flex: 1; min-width: 64px; }
.bar-pair { display: flex; align-items: flex-end; gap: 6px; height: 180px; }
.bar { width: 22px; border-radius: 5px 5px 0 0; position: relative; transition: height .4s; min-height: 2px; }
.bar.consult { background: var(--primary); }
.bar.enroll { background: var(--success); }
.bar .bar-val { position: absolute; top: -20px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--text-2); white-space: nowrap; }
.bar-label { font-size: 12px; color: var(--text-2); }
.legend { display: flex; gap: 16px; font-size: 12px; color: var(--text-2); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; }

/* ---------- 移动端 ---------- */
@media (max-width: 900px) {
    .sidebar { position: fixed; left: 0; top: 0; transform: translateX(-100%); transition: transform .25s; height: 100vh; }
    .sidebar.open { transform: none; }
    .sidebar-mask.show { display: block; position: fixed; inset: 0; background: rgba(15,23,42,.4); z-index: 99; }
    .menu-toggle { display: inline-flex; }
    .topbar { padding: 0 16px; }
    .content { padding: 16px; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .form-grid { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
    .kv { grid-template-columns: 110px 1fr; }
    .filter-bar .form-group { min-width: 120px; flex: 1; }
    .pagination { justify-content: center; }
    .pagination .info { width: 100%; text-align: center; margin: 0 0 8px; }
}
@media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .stat-card { padding: 14px; }
    .stat-card .value { font-size: 18px; }
    .topbar .page-title { font-size: 14px; }
    .auth-card { padding: 32px 24px; }
}

/* ---------- 打印样式 ---------- */
@media print {
    body { background: #fff; font-size: 12px; }
    .sidebar, .topbar, .no-print, .pagination, .filter-bar, .toolbar, .toast-wrap, .modal-mask { display: none !important; }
    .layout { display: block; }
    .main { display: block; }
    .content { padding: 0; }
    .card { box-shadow: none; border: none; border-radius: 0; }
    .card-header { border: none; padding: 0 0 10px; }
    .card-body { padding: 0; }
    .table th, .table td { padding: 6px 8px; border-bottom: 1px solid #ddd; }
    .table-compact { width: 100%; }
    .table-compact th, .table-compact td { font-size: 8px; padding: 2px 4px; white-space: normal; word-break: break-word; line-height: 1.4; }
    .table th { background: #f0f0f0 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .badge { border: 1px solid currentColor; background: #fff !important; }
    .avatar { display: none; }
    .stat-grid { grid-template-columns: repeat(4, 1fr); }
    .stat-card { border: 1px solid #ddd; box-shadow: none; }
    .print-header { display: block !important; text-align: center; margin-bottom: 14px; }
    a { color: inherit; }
    @page { size: A4 landscape; margin: 8mm; }
}
.print-header { display: none; }
/* 全字段紧凑表格（打印预览/打印）：允许换行避免打印裁切 */
.table-compact { width: 100%; }
.table-compact th, .table-compact td { font-size: 11px; padding: 5px 6px; white-space: normal; word-break: break-word; }
.table-compact td.wrap { max-width: 180px; }