:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e6e8eb;
  --text: #1f2329;
  --muted: #8a919c;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #dc2626;
  --green: #16a34a;
  --radius: 10px;
}

* { 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);
  font-size: 14px;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--danger); min-height: 1.2em; }
.spacer { flex: 1; }

/* 令牌门 */
.gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.gate-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px 36px;
  width: 340px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0,0,0,.06);
}
.gate-card h1 { margin: 0 0 6px; font-size: 22px; }
.gate-card input {
  width: 100%;
  padding: 10px 12px;
  margin: 18px 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

/* 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; font-size: 16px; }
.account-tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.account-tab {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  background: #fff;
}
.account-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.account-tab .plat { font-size: 11px; opacity: .75; margin-left: 4px; }
.topbar-right { margin-left: auto; }

/* 布局 */
.layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px 20px;
  max-width: 1200px;
  margin: 0 auto;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

.col { display: flex; flex-direction: column; gap: 16px; }

/* 卡片 */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.card-title {
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.badge {
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 12px;
}

/* 按钮 */
.btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
}
.btn:hover { background: #f3f4f6; }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-hover); }
.btn.danger { background: #fff; color: var(--danger); border-color: var(--danger); }
.btn.danger:hover { background: #fee2e2; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.small { padding: 4px 10px; font-size: 12px; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* 状态 */
.status-box { line-height: 1.8; }
.status-box .ok { color: var(--green); }
.status-box .warn { color: var(--danger); }

/* 远程桌面 iframe */
.vnc-frame {
  width: 100%;
  height: 460px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #000;
}
#login-box .btn { margin-top: 8px; }

/* 表单 */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; }
.form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.form-grid label.full { grid-column: 1 / -1; }
.form-grid input, .form-grid textarea {
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
}
.form-grid label.checkbox { flex-direction: row; align-items: center; gap: 8px; }

/* 好友列表 */
.friend-list { display: flex; flex-direction: column; gap: 6px; max-height: 420px; overflow-y: auto; }
.friend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.friend-item .name { flex: 1; }
.friend-item .spark { color: #f59e0b; font-weight: 600; }
.friend-item .lighting { color: var(--muted); font-size: 12px; }

/* 日志 */
.logs {
  background: #0f172a;
  color: #cbd5e1;
  border-radius: 8px;
  padding: 12px;
  font-size: 12px;
  line-height: 1.6;
  max-height: 420px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}