/* kvfw - style.css 管理界面样式（浅色主题） */
:root {
  --bg: #f5f7fa;
  --card: #ffffff;
  --border: #e4e7ed;
  --text: #303133;
  --text-secondary: #909399;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 14px rgba(0, 0, 0, 0.04);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.6;
}

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #eef2ff 0%, #f5f7fa 100%);
}
.login-card {
  width: 360px; background: var(--card); border-radius: 14px; padding: 36px 32px;
  box-shadow: var(--shadow);
}
.login-card h1 { font-size: 20px; text-align: center; margin-bottom: 4px; }
.login-card .sub { text-align: center; color: var(--text-secondary); font-size: 12px; margin-bottom: 24px; }
.login-card .field { margin-bottom: 16px; }
.login-card label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.login-card input {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; transition: border-color .15s;
}
.login-card input:focus { border-color: var(--primary); }
.login-card button {
  width: 100%; padding: 11px; background: var(--primary); color: #fff; border: 0;
  border-radius: 8px; font-size: 15px; cursor: pointer; margin-top: 6px;
}
.login-card button:hover { background: var(--primary-dark); }
.login-card button:disabled { opacity: .6; cursor: not-allowed; }
.login-err { color: var(--danger); font-size: 13px; text-align: center; min-height: 20px; margin-top: 10px; }

/* ---------- 管理页布局 ---------- */
.topbar {
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 0 24px; height: 56px; display: flex; align-items: center; gap: 16px;
  position: sticky; top: 0; z-index: 10;
}
.topbar .brand { font-size: 16px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.topbar .brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--success); display: inline-block; }
.topbar .spacer { flex: 1; }
.topbar .tool-badge {
  font-size: 12px; padding: 3px 10px; border-radius: 999px; background: #eef2ff; color: var(--primary);
}
.topbar .logout-btn {
  background: none; border: 1px solid var(--border); padding: 6px 14px; border-radius: 8px;
  cursor: pointer; font-size: 13px; color: var(--text);
}
.topbar .logout-btn:hover { border-color: var(--danger); color: var(--danger); }

.layout { display: flex; min-height: calc(100vh - 56px); }
.sidebar {
  width: 200px; background: var(--card); border-right: 1px solid var(--border); padding: 16px 10px;
  flex-shrink: 0;
}
.sidebar .nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 8px;
  cursor: pointer; color: var(--text-secondary); margin-bottom: 4px; font-size: 14px;
  user-select: none;
}
.sidebar .nav-item:hover { background: #f1f5f9; color: var(--text); }
.sidebar .nav-item.active { background: #eef2ff; color: var(--primary); font-weight: 500; }

.main { flex: 1; padding: 24px; min-width: 0; }
.page { display: none; }
.page.active { display: block; }
.page h2 { font-size: 18px; margin-bottom: 4px; }
.page .desc { color: var(--text-secondary); font-size: 13px; margin-bottom: 20px; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; margin-bottom: 20px; box-shadow: var(--shadow);
}
.card h3 { font-size: 15px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }

/* ---------- 表单 ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.field label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.field input, .field select {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; outline: none; background: #fff;
}
.field input:focus, .field select:focus { border-color: var(--primary); }
.field .hint { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px;
  border: 1px solid var(--border); border-radius: 8px; background: #fff;
  font-size: 13px; cursor: pointer; transition: all .15s; color: var(--text);
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 表格 ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--text-secondary); font-weight: 500; background: #fafbfc; white-space: nowrap; }
tr:hover td { background: #f8fafc; }
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px;
}
.tag-ip { background: #eef2ff; color: var(--primary); }
.tag-cidr { background: #fef3c7; color: var(--warning); }
.tag-knock { background: #dcfce7; color: var(--success); }
.tag-manual { background: #f3f4f6; color: var(--text-secondary); }
.tag-expired { background: #fee2e2; color: var(--danger); }
code {
  background: #f1f5f9; padding: 2px 6px; border-radius: 5px; font-size: 12px;
  font-family: "SF Mono", Consolas, monospace;
}
.mono { font-family: "SF Mono", Consolas, monospace; }

/* ---------- 开关 ---------- */
.switch { position: relative; display: inline-block; width: 40px; height: 22px; vertical-align: middle; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
  position: absolute; inset: 0; background: #d1d5db; border-radius: 999px; transition: .2s; cursor: pointer;
}
.switch .slider::before {
  content: ""; position: absolute; width: 16px; height: 16px; border-radius: 50%;
  background: #fff; left: 3px; top: 3px; transition: .2s; box-shadow: 0 1px 2px rgba(0,0,0,.2);
}
.switch input:checked + .slider { background: var(--success); }
.switch input:checked + .slider::before { transform: translateX(18px); }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); display: none;
  align-items: center; justify-content: center; z-index: 100;
}
.modal-mask.show { display: flex; }
.modal {
  background: var(--card); border-radius: 14px; width: 480px; max-width: 92vw;
  max-height: 88vh; overflow: auto; padding: 24px; box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
.modal h3 { font-size: 16px; margin-bottom: 18px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ---------- 统计卡 ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; text-align: center; box-shadow: var(--shadow);
}
.stat-card .num { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ---------- 提示条 ---------- */
.toast {
  position: fixed; top: 68px; left: 50%; transform: translateX(-50%); z-index: 200;
  background: #111827; color: #fff; padding: 10px 20px; border-radius: 10px;
  font-size: 13px; box-shadow: 0 6px 20px rgba(0,0,0,.25); opacity: 0; transition: opacity .2s;
  pointer-events: none; max-width: 80vw;
}
.toast.show { opacity: 1; }
.toast.success { background: #166534; }
.toast.error { background: #7f1d1d; }

/* ---------- 日志 ---------- */
.log-list { max-height: 420px; overflow: auto; }
.log-row {
  display: flex; gap: 12px; padding: 8px 10px; border-bottom: 1px solid var(--border);
  font-size: 13px; align-items: baseline;
}
.log-row .time { color: var(--text-secondary); white-space: nowrap; font-family: Consolas, monospace; font-size: 12px; }
.log-row .ok { color: var(--success); font-weight: 500; }
.log-row .fail { color: var(--danger); font-weight: 500; }

.empty { text-align: center; color: var(--text-secondary); padding: 32px 0; font-size: 13px; }

@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: 0; border-bottom: 1px solid var(--border); display: flex; overflow-x: auto; }
  .sidebar .nav-item { white-space: nowrap; margin-bottom: 0; }
}