:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --border: #2a2d3a;
  --text: #e0e0e0;
  --text-dim: #8b8fa3;
  --accent: #4f8cff;
  --green: #34d399;
  --red: #f87171;
  --yellow: #fbbf24;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 20px 0;
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 16px;
  font-weight: 700;
  padding: 0 20px 20px;
  border-bottom: 1px solid var(--border);
  color: var(--accent);
}

.sidebar-nav {
  list-style: none;
  padding: 10px 0;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  color: var(--text-dim);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.15s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: var(--text);
  background: rgba(79, 140, 255, 0.1);
  border-right: 2px solid var(--accent);
}

.sidebar-nav .icon {
  width: 18px;
  text-align: center;
}

.main {
  flex: 1;
  padding: 24px 32px;
  overflow-y: auto;
}

.page-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.status-dot.running { background: var(--green); box-shadow: 0 0 6px var(--green); }
.status-dot.stopped { background: var(--red); }
.status-dot.unknown { background: var(--yellow); }

.card-body .stat-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}

.card-body .stat-row:last-child { border-bottom: none; }
.stat-label { color: var(--text-dim); }
.stat-value { font-weight: 500; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}

.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { opacity: 0.9; color: #fff; }
.btn-danger { border-color: var(--red); color: var(--red); }
.btn-danger:hover { background: var(--red); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.actions { display: flex; gap: 8px; margin-top: 12px; }

/* Forms */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Alerts */
.alert {
  padding: 10px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 13px;
}

.alert-success { background: rgba(52, 211, 153, 0.15); border: 1px solid var(--green); color: var(--green); }
.alert-error { background: rgba(248, 113, 113, 0.15); border: 1px solid var(--red); color: var(--red); }

/* Logs */
.log-container {
  background: #000;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.6;
  max-height: 600px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: #b0b0b0;
}

.log-controls {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

/* ZeroTier table */
.zt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.zt-table th {
  text-align: left;
  padding: 10px 12px;
  color: var(--text-dim);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}

.zt-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.zt-table tr:last-child td {
  border-bottom: none;
}

.zt-table code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* ZeroTier config grid */
.zt-config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 20px;
}

@media (max-width: 768px) {
  .zt-config-grid { grid-template-columns: 1fr; }
}

/* Info bar */
.info-bar {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px 20px;
  margin-bottom: 16px;
  font-size: 13px;
}

.info-bar .info-item {
  display: flex;
  gap: 8px;
}

.info-bar .info-label { color: var(--text-dim); }
.info-bar .info-value { font-weight: 500; color: var(--accent); }

/* SS URI */
.ss-uri {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  font-family: monospace;
  font-size: 12px;
  word-break: break-all;
  margin-top: 8px;
  cursor: pointer;
}

/* 入网向导 */
.zt-ond-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: flex-end;
}
.zt-ond-field { display: inline-flex; flex-direction: column; gap: 4px; }
.zt-ond-field > label { font-size: 12px; color: var(--text-dim); }
.zt-ond-field select {
  padding: 6px 8px;
  font-size: 13px;
  min-width: 280px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  color: var(--text);
}
.zt-ond-modes { display: inline-flex; gap: 6px; }
.zt-ond-qr {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-top: 16px;
  padding: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.zt-ond-qr-box {
  flex: none;
  width: 180px;
  height: 180px;
  background: #fff;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.zt-ond-qr-box img { display: block; }
.zt-ond-qr p { margin: 0 0 8px; }
.zt-ond-tip { color: var(--text-dim); font-size: 12px; }

/* ZT 成员列表增强（分组/搜索/在线状态/时序） */
.zt-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.zt-toolbar input[type=text],
.zt-toolbar select {
  padding: 6px 10px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
}

.zt-toolbar input[type=text] { width: 220px; }
.zt-toolbar label { font-size: 12px; color: var(--text-dim); display: flex; align-items: center; gap: 4px; cursor: pointer; }
.zt-m-count { margin-left: auto; font-size: 12px; color: var(--text-dim); }

.zt-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.zt-dot.on { background: var(--green); box-shadow: 0 0 6px var(--green); }
.zt-dot.off { background: var(--text-dim); opacity: 0.5; }

.zt-sub { font-size: 11px; color: var(--text-dim); margin-top: 2px; }

.zt-chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  background: rgba(79, 140, 255, 0.15);
  color: var(--accent);
  white-space: nowrap;
}

.zt-group-row td {
  padding: 10px 4px 6px;
  font-size: 12px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}

.zt-group-row b { color: var(--text); font-size: 13px; margin-right: 6px; }

.zt-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  padding: 12px;
  background: var(--bg);
  border-radius: 6px;
  margin: 6px 0;
}

.zt-meta-grid label { display: block; font-size: 11px; color: var(--text-dim); margin-bottom: 4px; }

.zt-meta-grid input {
  width: 100%;
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  color: var(--text);
  box-sizing: border-box;
}

.zt-meta-grid input:focus { outline: none; border-color: var(--accent); }
.zt-meta-actions { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 11px; color: var(--text-dim); }

.zt-history {
  padding: 12px;
  background: var(--bg);
  border-radius: 6px;
  margin: 6px 0;
  font-size: 12px;
  color: var(--text-dim);
}

.zt-history-bars { display: flex; align-items: stretch; gap: 2px; height: 36px; margin: 10px 0 4px; }
.zt-history-bars div { flex: 1; border-radius: 2px; min-width: 2px; }
.zt-hb-on { background: var(--green); }
.zt-hb-partial { background: var(--yellow); }
.zt-hb-off { background: rgba(255, 255, 255, 0.08); }
.zt-hb-none { background: transparent; border: 1px dashed var(--border); }
.zt-history-legend { display: flex; justify-content: space-between; font-size: 11px; }

/* 僵尸成员标记与固定 IP 标记 */
.zt-zombie {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  margin-left: 6px;
  background: rgba(248, 113, 113, 0.15);
  color: var(--red);
  cursor: help;
  white-space: nowrap;
}
.zt-chip-fixed {
  background: rgba(251, 191, 36, 0.15);
  color: var(--yellow);
  margin-left: 4px;
}

/* 有效期徽标 */
.zt-expiry {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  margin-left: 6px;
  background: rgba(251, 191, 36, 0.15);
  color: var(--yellow);
  white-space: nowrap;
}
.zt-expired {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  margin-left: 6px;
  background: rgba(248, 113, 113, 0.15);
  color: var(--red);
  cursor: help;
  white-space: nowrap;
}

/* 批量操作条 */
.zt-batch-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  margin: 8px 0;
  font-size: 13px;
  background: rgba(79, 140, 255, 0.1);
  border: 1px solid rgba(79, 140, 255, 0.3);
  border-radius: 6px;
}
.zt-batch-bar b { color: var(--accent); }

.zt-exp-row { display: flex; align-items: center; gap: 8px; }
.zt-exp-row input[type=datetime-local] {
  padding: 6px 8px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  color: var(--text);
}
.zt-exp-row input[type=datetime-local]:disabled { opacity: 0.4; }
.zt-table td input[type=checkbox], .zt-table th input[type=checkbox] { cursor: pointer; }

/* IP 地址簿 */
.zt-ip-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.zt-ip-legend span { display: flex; align-items: center; gap: 5px; }
.zt-ip-dot { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.zt-ip-dot.used { background: var(--green); }
.zt-ip-dot.reserved { background: var(--yellow); }
.zt-ip-dot.free { background: transparent; border: 1px dashed var(--border); }

.zt-ipgrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 6px;
}

.zt-ipcell {
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 11px;
  line-height: 1.4;
  overflow: hidden;
}
.zt-ipcell b { display: block; font-size: 12px; }
.zt-ip-name {
  display: block;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}
.zt-ipcell.used { background: rgba(52, 211, 153, 0.12); color: var(--green); }
.zt-ipcell.used .zt-ip-name { color: var(--text); }
.zt-ipcell.reserved { background: rgba(251, 191, 36, 0.12); color: var(--yellow); cursor: pointer; }
.zt-ipcell.reserved .zt-ip-name { color: var(--text); }
.zt-ipcell.free {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--text-dim);
  cursor: pointer;
}
.zt-ipcell.free:hover { border-color: var(--accent); color: var(--accent); }
.zt-ipcell.reserved:hover { outline: 1px solid var(--red); }

.zt-ip-summary { margin-top: 12px; font-size: 12px; color: var(--text-dim); }

/* Login */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 360px;
}

.login-box h1 {
  font-size: 20px;
  margin-bottom: 24px;
  text-align: center;
  color: var(--accent);
}

.login-box .btn-primary {
  width: 100%;
  justify-content: center;
  padding: 10px;
  font-size: 14px;
}

/* Route config */
.rt-input {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  width: 100%;
}

.rt-input:focus {
  outline: none;
  border-color: var(--accent);
}

.rt-select {
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  min-width: 180px;
}

.rt-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Responsive */
@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
  .sidebar-nav { display: flex; overflow-x: auto; }
  .sidebar-nav a { white-space: nowrap; border-right: none !important; }
  .main { padding: 16px; }
  .cards { grid-template-columns: 1fr; }
}

/* 仪表盘业务指标 */
.m-section-title {
  font-size: 15px;
  margin: 20px 0 12px;
  color: var(--text);
}
.m-big { font-size: 13px; color: var(--text-dim); white-space: nowrap; }
.m-num { font-size: 18px; font-weight: 700; color: var(--green); }
.m-rows { margin-bottom: 10px; }
.m-spark-wrap { margin: 8px 0 6px; overflow-x: auto; }
.m-spark { display: block; min-width: 200px; }
.m-spark-empty { fill: var(--text-dim); font-size: 11px; text-anchor: middle; }
.m-subrow {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-dim);
  padding: 3px 0;
  border-top: 1px dashed var(--border);
}
.m-nw-link { color: var(--accent); text-decoration: none; }
.m-nw-link:hover { text-decoration: underline; }
.m-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 4px;
}
.m-dot.on { background: var(--green); }
.m-dot.off { background: #555a6e; }
.m-note { font-size: 11px; color: var(--text-dim); margin: 4px 0 0; }
.m-good { color: var(--green); font-weight: 600; }
.m-warn { color: var(--yellow); font-weight: 600; }
.m-bad { color: var(--red); font-weight: 600; }