/* ============ 主机客户管理系统 后台样式 ============ */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --text: #1f2937;
    --muted: #6b7280;
    --line: #e5e7eb;
    --bg: #f3f4f6;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    color: var(--text);
    background: var(--bg);
}

code { background: #eef2ff; color: #4338ca; padding: 1px 6px; border-radius: 4px; font-size: 12px; }

/* ---------- 布局 ---------- */
.layout { min-height: 100vh; }

.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; width: 220px;
    background: #111827; color: #d1d5db;
    display: flex; flex-direction: column; z-index: 10;
}
.sidebar .logo {
    display: block; padding: 22px 20px; color: #fff; font-size: 17px; font-weight: 700;
    text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar .menu { flex: 1; padding: 12px 10px; }
.sidebar .menu a {
    display: block; padding: 11px 14px; margin-bottom: 4px; border-radius: 8px;
    color: #9ca3af; text-decoration: none; font-size: 14px; transition: all .15s;
}
.sidebar .menu a:hover { color: #fff; background: rgba(255,255,255,.06); }
.sidebar .menu a.active { color: #fff; background: var(--primary); }
.sidebar-foot {
    padding: 14px 20px; border-top: 1px solid rgba(255,255,255,.08);
    display: flex; justify-content: space-between; align-items: center; font-size: 13px;
}
.sidebar-foot a { color: #9ca3af; text-decoration: none; }
.sidebar-foot a:hover { color: #fff; }

.main { margin-left: 220px; padding: 26px 30px 40px; }
.page-head { margin-bottom: 18px; }
.page-head h1 { font-size: 21px; font-weight: 700; }

/* ---------- 统计卡片 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.stat-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }
.stat-card {
    background: #fff; border-radius: 12px; padding: 20px 22px; text-decoration: none;
    box-shadow: 0 1px 3px rgba(0,0,0,.06); border-left: 4px solid var(--primary);
    transition: transform .15s, box-shadow .15s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.08); }
.stat-card .stat-num { font-size: 28px; font-weight: 700; color: var(--text); }
.stat-card .stat-label { margin-top: 4px; color: var(--muted); font-size: 13px; }
.stat-card.stat-warn { border-left-color: #f59e0b; }
.stat-card.stat-warn .stat-num { color: #d97706; }

/* ---------- 卡片 / 表格 ---------- */
.card {
    background: #fff; border-radius: 12px; padding: 6px 18px 14px;
    box-shadow: 0 1px 3px rgba(0,0,0,.06); margin-bottom: 18px;
}
.card-title { font-size: 15px; font-weight: 700; padding: 14px 0 10px; }
.card-more { float: right; font-size: 13px; font-weight: 400; color: var(--primary); text-decoration: none; }

.table { width: 100%; border-collapse: collapse; }
.table th {
    text-align: left; padding: 10px 10px; font-size: 12px; color: var(--muted);
    border-bottom: 1px solid var(--line); white-space: nowrap;
}
.table td { padding: 11px 10px; border-bottom: 1px solid #f1f5f9; vertical-align: middle; }
.table tbody tr:hover { background: #f8fafc; }
.table .empty { text-align: center; color: var(--muted); padding: 40px 0; }
.table .ops { text-align: right; white-space: nowrap; }
.table .ops form { display: inline-block; margin: 0 0 0 4px; }
.txt-left { text-align: left !important; max-width: 340px; }

.text-muted { color: var(--muted); }

/* ---------- 服务器文档 ---------- */
.doc-view {
    white-space: pre-wrap; word-break: break-word; line-height: 1.8;
    font-size: 13.5px; padding: 4px 2px 12px;
}
.empty-doc { color: var(--muted); text-align: center; padding: 36px 0; }

/* ---------- 客户联系方式列 ---------- */
.contacts-cell div { line-height: 1.6; white-space: nowrap; }
.contacts-cell .contact-main { font-weight: 600; }

/* ---------- 徽章 ---------- */
.badge {
    display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; white-space: nowrap;
}
.badge-ok { background: #dcfce7; color: #15803d; }
.badge-info { background: #dbeafe; color: #1d4ed8; }
.badge-purple { background: #f3e8ff; color: #7e22ce; }
.badge-warn { background: #fef3c7; color: #b45309; }
.badge-danger { background: #fee2e2; color: #b91c1c; }
.badge-muted { background: #f3f4f6; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn {
    display: inline-block; padding: 8px 16px; font-size: 14px; border: 1px solid var(--line);
    background: #fff; color: var(--text); border-radius: 8px; cursor: pointer;
    text-decoration: none; line-height: 1.4; transition: all .15s;
}
.btn:hover { border-color: #cbd5e1; background: #f8fafc; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-danger { background: #fff; border-color: #fecaca; color: var(--danger); }
.btn-danger:hover { background: #fef2f2; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.btn-light { background: transparent; }
.btn-block { display: block; width: 100%; }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* ---------- 工具条 / 提示 ---------- */
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.search-form { display: flex; gap: 8px; flex-wrap: wrap; }
.tip { color: var(--muted); font-size: 13px; }

.alert { padding: 11px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; }
.alert-success { background: #dcfce7; color: #166534; }
.alert-error { background: #fee2e2; color: #991b1b; }

/* ---------- 表单 ---------- */
.form-card { max-width: 860px; padding: 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 22px; }
.form-item label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-item label em { color: var(--danger); font-style: normal; }
.form-item input, .form-item select, .form-item textarea {
    width: 100%; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
    font-size: 14px; font-family: inherit; outline: none; background: #fff; transition: border .15s;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus { border-color: var(--primary); }
.form-item .help { margin-top: 5px; font-size: 12px; color: var(--muted); }
.form-item-full { grid-column: 1 / -1; }
.form-actions { margin-top: 22px; display: flex; gap: 10px; }
textarea { resize: vertical; }

/* ---------- 分页 ---------- */
.pager { margin: 4px 0 0; }
.pagination { display: flex; gap: 6px; list-style: none; flex-wrap: wrap; }
.pagination li a, .pagination li span {
    display: inline-block; padding: 6px 12px; border: 1px solid var(--line); border-radius: 6px;
    color: var(--text); text-decoration: none; font-size: 13px; background: #fff;
}
.pagination li.active span { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination li.disabled span { color: #cbd5e1; background: #f8fafc; }

/* ---------- 登录页 ---------- */
.login-body {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 55%, #38bdf8 100%);
}
.login-box {
    width: 380px; background: #fff; border-radius: 16px; padding: 38px 36px;
    box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.login-box h1 { font-size: 20px; text-align: center; }
.login-box .sub { text-align: center; color: var(--muted); font-size: 13px; margin: 8px 0 22px; }
.login-box .form-item { margin-bottom: 16px; }
.login-box .btn-block { margin-top: 6px; padding: 11px; font-size: 15px; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
    .sidebar { width: 64px; }
    .sidebar .logo { font-size: 12px; padding: 18px 8px; text-align: center; }
    .sidebar .menu a { font-size: 12px; padding: 10px 4px; text-align: center; overflow: hidden; }
    .sidebar-foot { flex-direction: column; gap: 6px; font-size: 11px; }
    .main { margin-left: 64px; padding: 18px 14px 30px; }
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .form-grid { grid-template-columns: 1fr; }
}