/* Domain Manager — 左右布局 + 全中文 + 深色主题 */

:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2537;
  --sidebar-bg: #0f141c;
  --sidebar-hover: #1a2538;
  --border: #2d3552;
  --text: #e1e7f0;
  --muted: #7c90b5;
  --accent: #58a6ff;
  --accent-2: #1f6feb;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
  --sidebar-width: 220px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
               "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, .mono {
  font-family: "SFMono-Regular", "JetBrains Mono", "Fira Code", Consolas, monospace;
  font-size: 0.88em;
}

.muted { color: var(--muted); }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.err { color: var(--err); }
.small { font-size: 0.85em; }

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

/* ======== 侧边栏 ======== */
.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-brand {
  padding: 20px 18px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-text {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.sidebar-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 8px 16px;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px 8px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 400;
  transition: all 0.12s ease;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: var(--text);
  text-decoration: none;
}

.nav-item.active {
  background: var(--accent-2);
  color: #fff;
}

.nav-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

.nav-label {
  font-weight: 500;
}

.sidebar-footer {
  padding: 8px;
}

.user-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
}

.logout-link {
  color: var(--muted);
  font-size: 13px;
}
.logout-link:hover { color: var(--err); text-decoration: none; }

/* ======== 主内容区 ======== */
.main-content {
  flex: 1;
  padding: 28px 32px 64px;
  max-width: 100%;
  overflow-x: auto;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

/* ======== 卡片 ======== */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-num { font-size: 30px; font-weight: 600; color: var(--accent); }
.stat-num.ok { color: var(--ok); }
.stat-num.err { color: var(--err); }
.stat-label { color: var(--muted); font-size: 13px; }
.stat-link { color: var(--accent); font-size: 13px; margin-top: 8px; }

/* ======== 标题 ======== */
h1 { font-size: 20px; margin: 0; font-weight: 600; }
h2 { font-size: 16px; margin: 0 0 12px; color: var(--text); font-weight: 500; }
h3 { font-size: 14px; margin: 0; }

/* ======== 表单 ======== */
.form, form { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input, select, textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border 0.15s;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(88, 166, 255, 0.15);
}
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.checks { display: flex; flex-wrap: wrap; gap: 12px; }
.check { flex-direction: row; align-items: center; gap: 6px; color: var(--text); }

input[type="checkbox"] {
  accent-color: var(--accent-2);
  width: 16px; height: 16px;
}

/* ======== 按钮 ======== */
button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.12s;
}
button:hover, .btn:hover { background: var(--border); }
.btn-primary {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #fff;
}
.btn-primary:hover { background: var(--accent); }
.btn-danger { color: var(--err); border-color: var(--err); background: transparent; }
.btn-danger:hover { background: var(--err); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* ======== 表格 ======== */
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.table th {
  color: var(--muted);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(255,255,255,0.02); }
.table .empty { text-align: center; color: var(--muted); padding: 40px; font-style: italic; }

/* ======== 徽标 ======== */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 500;
  background: var(--panel-2);
  color: var(--muted);
}
.badge-active { background: rgba(63, 185, 80, 0.15); color: var(--ok); }
.badge-disabled { background: rgba(248, 81, 73, 0.15); color: var(--err); }

.tag {
  display: inline-block;
  padding: 1px 7px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11px;
  margin-right: 4px;
  color: var(--accent);
}

/* ======== 提示 ======== */
.alert {
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  border: 1px solid;
  font-size: 13px;
}
.alert-warn { background: rgba(210, 153, 34, 0.08); border-color: var(--warn); color: var(--warn); }

/* ======== Flash 消息 ======== */
.flashes { margin-bottom: 16px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 8px; font-size: 13px; }
.flash-error { background: rgba(248, 81, 73, 0.1); color: var(--err); border: 1px solid var(--err); }
.flash-success { background: rgba(63, 185, 80, 0.1); color: var(--ok); border: 1px solid var(--ok); }

/* ======== 弹窗 ======== */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
}
.modal.hidden { display: none; }
.modal-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  width: 500px;
  max-width: 90vw;
  max-height: 85vh;
  overflow-y: auto;
}
.modal-card h2 { margin-bottom: 16px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

/* ======== 开关 ======== */
.switch { position: relative; display: inline-block; width: 36px; height: 20px; flex-direction: row; align-items: center; gap: 8px; cursor: pointer; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute; cursor: pointer; inset: 0;
  background: var(--border);
  border-radius: 20px;
  transition: 0.2s;
}
.slider::before {
  position: absolute; content: "";
  height: 14px; width: 14px; left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: 0.2s;
}
input:checked + .slider { background: var(--accent-2); }
input:checked + .slider::before { transform: translateX(16px); }

/* ======== 登录页（非常规） ======== */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 44px;
  width: 380px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.login-header { text-align: center; margin-bottom: 28px; }
.login-header h1 { font-size: 20px; margin: 10px 0 4px; }
.login-header .logo { font-size: 44px; display: block; }

/* ======== 隧道卡片 ======== */
.tunnel-list { display: flex; flex-direction: column; gap: 12px; }
.tunnel-card .tunnel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.tunnel-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.tunnel-routes { margin-top: 12px; }
.tunnel-routes summary { cursor: pointer; padding: 8px 0; color: var(--muted); font-size: 13px; }
.route-form { display: flex; gap: 8px; margin-top: 12px; }
.route-form input { flex: 1; }

/* ======== 步骤 ======== */
.steps { padding-left: 20px; line-height: 2.2; color: var(--muted); }
.steps strong { color: var(--text); }

/* ======== 代码块 ======== */
pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
  font-size: 12px;
  font-family: inherit;
}

/* ======== 响应式（窄屏） ======== */
@media (max-width: 768px) {
  .sidebar { width: 56px; }
  .sidebar .brand-text, .sidebar .nav-label, .sidebar .user-info span,
  .sidebar .logout-link { display: none; }
  .sidebar-brand { justify-content: center; padding: 16px 0 8px; }
  .nav-item { justify-content: center; padding: 10px 0; }
  .nav-icon { font-size: 22px; margin: 0; }
  .sidebar-footer .user-info { flex-direction: column; align-items: center; padding: 8px 0; }
  .main-content { padding: 20px 16px 64px; }
}