:root {
  --bg: #0f1419;
  --panel: #1a2230;
  --panel-2: #222c3d;
  --border: #2c3a4f;
  --text: #e6edf3;
  --muted: #8b98a9;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --green: #22c55e;
  --red: #ef4444;
  --amber: #f59e0b;
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error { color: var(--red); min-height: 1.2em; }
.row { display: flex; align-items: center; }
.gap { gap: 10px; }
.spread { justify-content: space-between; }

/* ---------- 登录 ---------- */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 36px; width: 360px; box-shadow: 0 8px 40px rgba(0,0,0,.4);
}
.login-card h1 { margin: 0 0 4px; font-size: 22px; }
.divider { text-align: center; color: var(--muted); margin: 18px 0 12px; font-size: 12px; }
.block { width: 100%; }

/* ---------- 侧边栏布局 ---------- */
.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 216px; flex-shrink: 0; background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.brand {
  font-weight: 600; font-size: 16px; white-space: nowrap;
  padding: 18px 18px 14px; border-bottom: 1px solid var(--border);
}
.sidenav { flex: 1; overflow-y: auto; padding: 12px 10px; }
.nav-group {
  font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); padding: 14px 10px 6px; font-weight: 600;
}
.nav-group:first-child { padding-top: 4px; }
.nav-item {
  display: block; width: 100%; text-align: left;
  padding: 9px 12px; border-radius: 8px; cursor: pointer; color: var(--muted);
  border: none; background: none; font-size: 14px; margin: 1px 0; font-family: inherit;
}
.nav-item:hover { background: var(--panel-2); color: var(--text); }
.nav-item.active { background: var(--primary); color: #fff; }
.sidebar-foot { padding: 14px; border-top: 1px solid var(--border); }
.user-name { font-size: 13px; margin-bottom: 8px; color: var(--text); }

/* ---------- 内容 ---------- */
.content { flex: 1; padding: 24px 28px; max-width: 1200px; overflow-x: hidden; }
@media (max-width: 760px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .sidenav { display: flex; flex-wrap: wrap; }
  .nav-group { width: 100%; padding: 6px 10px 2px; }
}
h2 { font-size: 18px; margin: 0 0 14px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; margin-bottom: 18px;
}
.card h3 { margin: 0 0 12px; font-size: 15px; }

/* ---------- 表单 ---------- */
.input, select, textarea {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 9px 11px; font-size: 14px; width: 100%; margin: 6px 0;
  font-family: inherit;
}
.input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); }
label { font-size: 12px; color: var(--muted); display: block; margin-top: 8px; }
.btn {
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 8px; padding: 8px 14px; cursor: pointer; font-size: 14px; font-family: inherit;
}
.btn:hover { background: var(--border); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn.danger { color: var(--red); border-color: var(--red); }
.btn.danger:hover { background: var(--red); color: #fff; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------- 表格 ---------- */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; white-space: nowrap; }
tr:hover td { background: rgba(255,255,255,.02); }

/* ---------- 短信卡片 ---------- */
.sms-item {
  border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
  margin-bottom: 10px; background: var(--panel);
}
.sms-head { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.sms-sender { font-weight: 600; color: var(--text); }
.sms-body { white-space: pre-wrap; word-break: break-word; }
.sms-code { color: var(--green); font-weight: 700; }

/* ---------- 杂项 ---------- */
.badge { display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 12px; white-space: nowrap; }
.badge.green { background: rgba(34,197,94,.15); color: var(--green); }
.badge.red { background: rgba(239,68,68,.15); color: var(--red); }
.badge.amber { background: rgba(245,158,11,.15); color: var(--amber); }
.badge.gray { background: var(--panel-2); color: var(--muted); }
.grid { display: grid; gap: 14px; }
.grid.cols-2 { grid-template-columns: 1fr 1fr; }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) { .grid.cols-2, .grid.cols-4 { grid-template-columns: 1fr; } }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 16px; }
.stat .num { font-size: 26px; font-weight: 700; }
.stat .lbl { color: var(--muted); font-size: 12px; margin-top: 4px; }
.empty { text-align: center; color: var(--muted); padding: 40px; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.toolbar .input, .toolbar select { width: auto; margin: 0; min-width: 160px; }
.token-box {
  background: #0b2818; border: 1px solid var(--green); border-radius: 8px;
  padding: 12px; font-family: monospace; word-break: break-all; margin: 10px 0;
}
.checkbox-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.checkbox-list label {
  display: flex; align-items: center; gap: 6px; margin: 0; color: var(--text);
  background: var(--panel-2); padding: 6px 10px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border);
}
.checkbox-list input { width: auto; margin: 0; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border); color: var(--text);
  padding: 11px 18px; border-radius: 10px; z-index: 100; box-shadow: 0 6px 24px rgba(0,0,0,.4);
}
.toast.ok { border-color: var(--green); }
.toast.err { border-color: var(--red); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); display: inline-block; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
code.inline { background: var(--panel-2); padding: 2px 6px; border-radius: 5px; font-size: 12px; }

/* ---------- 使用说明 ---------- */
.guide { max-width: 860px; line-height: 1.75; }
.guide h1 { font-size: 24px; margin: 4px 0 16px; }
.guide h2 { font-size: 19px; margin: 26px 0 10px; padding-top: 14px; border-top: 1px solid var(--border); }
.guide h3 { font-size: 16px; margin: 18px 0 8px; }
.guide h4 { font-size: 14px; margin: 14px 0 6px; color: var(--muted); }
.guide p { margin: 10px 0; }
.guide ul { margin: 8px 0; padding-left: 22px; }
.guide li { margin: 5px 0; }
.guide blockquote {
  margin: 12px 0; padding: 10px 14px; border-left: 3px solid var(--primary);
  background: var(--panel-2); border-radius: 0 8px 8px 0; color: var(--muted);
}
.guide pre {
  background: #0b1018; border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; overflow-x: auto; margin: 12px 0;
}
.guide pre code { background: none; padding: 0; font-size: 13px; color: var(--text); }
.guide strong { color: var(--text); }
.guide a { color: var(--primary); }

/* ---------- 可复制弹窗 ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal-box {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  width: 580px; max-width: 100%; max-height: 85vh; overflow-y: auto;
  box-shadow: 0 12px 48px rgba(0,0,0,.5);
}
.modal-head {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--panel);
}
.modal-head b { font-size: 15px; }
.modal-body { padding: 16px 18px; }
.modal-body textarea { width: 100%; }