:root {
  --bg: #f1f8f0;
  --card-bg: #ffffff;
  --primary: #2e8b57;
  --primary-dark: #226b43;
  --primary-light: #e6f4ea;
  --accent: #4caf7d;
  --text: #234032;
  --text-muted: #6b8a78;
  --border: #d7ead9;
  --danger: #d9534f;
  --danger-bg: #fdecea;
  --ok: #2e8b57;
  --ok-bg: #e6f4ea;
  --shadow: 0 2px 10px rgba(46, 139, 87, 0.08);
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ---------------- 登录页 ---------------- */

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #eaf6ec 0%, #d9efe0 100%);
}

.login-box {
  background: var(--card-bg);
  padding: 40px 36px;
  border-radius: var(--radius);
  box-shadow: 0 8px 30px rgba(46, 139, 87, 0.15);
  text-align: center;
  width: 320px;
}

.login-logo { font-size: 42px; margin-bottom: 8px; }

.login-box h1 { font-size: 20px; margin: 0 0 4px; color: var(--primary-dark); }

.login-box .sub { color: var(--text-muted); margin: 0 0 20px; font-size: 14px; }

.login-box form { display: flex; flex-direction: column; gap: 12px; }

.login-box input[type="password"] {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  outline: none;
  transition: border-color .15s;
}
.login-box input[type="password"]:focus { border-color: var(--primary); }

.login-box button {
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
  transition: background .15s;
}
.login-box button:hover { background: var(--primary-dark); }
.login-box button:disabled { background: #b7c9bd; cursor: not-allowed; }

/* ---------------- 通用组件 ---------------- */

.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 14px;
  text-align: left;
}
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-ok { background: var(--ok-bg); color: var(--ok); }

.wrap { max-width: 960px; margin: 0 auto; padding: 20px 16px 60px; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px 20px;
}
.brand { font-size: 20px; font-weight: 600; color: var(--primary-dark); }
.logout {
  color: var(--primary-dark);
  text-decoration: none;
  font-size: 14px;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 20px;
  background: #fff;
  transition: background .15s;
}
.logout:hover { background: var(--primary-light); }

.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 22px;
  margin-bottom: 18px;
  border: 1px solid var(--border);
}
.card h2 { margin: 0 0 12px; font-size: 16px; color: var(--primary-dark); }

.card-head-row { display: flex; align-items: center; justify-content: space-between; }
.card-head-row h2 { margin: 0; }

.hint { font-size: 13px; color: var(--text-muted); margin: 6px 0; }
.hint.muted { font-size: 12px; }

.code-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  background: var(--primary-light);
  border: 1px dashed var(--accent);
  border-radius: 8px;
  padding: 10px 12px;
  overflow-x: auto;
}
.code-box code { font-size: 13px; color: var(--primary-dark); white-space: nowrap; }

.form-grid { display: flex; flex-direction: column; gap: 14px; }
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-muted); }

input[type="text"], textarea {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  font-family: inherit;
  resize: vertical;
  transition: border-color .15s;
}
input[type="text"]:focus, textarea:focus { border-color: var(--primary); }

.form-actions { display: flex; gap: 10px; margin-top: 4px; }

/* ---------------- 添加服务器（集中输入框） ---------------- */

.card-add { max-width: 720px; margin-left: auto; margin-right: auto; }

.textarea-box {
  border: 1.5px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  transition: border-color .15s;
  background: #fbfefc;
}
.textarea-box:focus-within { border-color: var(--primary); }

.ip-textarea {
  width: 100%;
  border: none;
  border-radius: 0;
  padding: 14px 16px;
  font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  background: transparent;
  resize: vertical;
  min-height: 160px;
}
.ip-textarea:focus { outline: none; border: none; }

.textarea-footer {
  padding: 8px 14px;
  background: var(--primary-light);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}
.line-counter { transition: color .15s; }

button { font-family: inherit; }

.btn-primary, .btn-secondary, .btn-danger, .btn-mini {
  border: none;
  border-radius: 8px;
  padding: 9px 18px;
  font-size: 14px;
  cursor: pointer;
  transition: opacity .15s, background .15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--primary-light); color: var(--primary-dark); border: 1px solid var(--accent); }
.btn-secondary:hover { background: #d9efe0; }
.btn-danger { background: var(--danger-bg); color: var(--danger); padding: 6px 12px; font-size: 13px; }
.btn-danger:hover { background: #fbdedb; }
.btn-mini { background: var(--primary); color: #fff; padding: 6px 12px; font-size: 12px; flex-shrink: 0; }

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; }
thead th {
  text-align: left;
  padding: 10px 12px;
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 2px solid var(--border);
  white-space: nowrap;
}
tbody td { padding: 12px; border-bottom: 1px solid var(--border); white-space: nowrap; }
tbody tr:hover { background: var(--primary-light); }
.ip-cell { font-family: "SFMono-Regular", Consolas, monospace; color: var(--primary-dark); }
.empty { text-align: center; color: var(--text-muted); padding: 30px 0 !important; }

.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.dot-online { background: #2e8b57; box-shadow: 0 0 0 3px rgba(46,139,87,0.18); }
.dot-offline { background: #d9534f; box-shadow: 0 0 0 3px rgba(217,83,79,0.18); }
.dot-unknown { background: #b7c9bd; }

.footer { text-align: center; color: var(--text-muted); font-size: 12px; margin-top: 24px; }

@media (max-width: 600px) {
  .form-actions { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; }
}