:root {
  --brand: #4046b4;
  --brand-hover: #353aa0;
  --brand-soft: #eceefb;
  --accent: #00c2b5;
  --accent-soft: #e0f7f5;
  --ok: #16a34a;
  --ok-soft: #e7f6ec;
  --err: #dc2626;
  --err-soft: #fdecec;
  --warn: #d97706;
  --warn-soft: #fdf3e2;
  --bg: #f5f6fa;
  --surface: #ffffff;
  --surface-2: #f8f9fc;
  --border: #e4e6ef;
  --text: #171a2c;
  --text-2: #5b6078;
  --text-3: #9095aa;
  --side-bg: #14163a;
  --side-text: #b7bad3;
  --side-active: #262a66;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 22, 58, .05), 0 2px 8px rgba(20, 22, 58, .04);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text);
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono { font-family: var(--mono); font-size: 12.5px; }
h1, h2, h3 { margin: 0; font-weight: 600; }
h1 { font-size: 20px; }
h2 { font-size: 15px; }
h3 { font-size: 14px; }

/* ---------- layout ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 220px; flex: none; background: var(--side-bg); color: var(--side-text);
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 20px 18px 22px; color: #fff; }
.brand img { width: 34px; height: 34px; }
.brand b { font-size: 17px; letter-spacing: .2px; }
.brand small { display: block; color: var(--side-text); font-size: 11px; font-weight: 400; }
.nav { display: flex; flex-direction: column; gap: 2px; padding: 0 10px; }
.nav a {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px;
  color: var(--side-text); text-decoration: none;
}
.nav a:hover { background: rgba(255, 255, 255, .05); color: #fff; }
.nav a.active { background: var(--side-active); color: #fff; }
.nav a.active svg { color: #2ad6c9; }
.nav svg { width: 18px; height: 18px; flex: none; }
.side-foot { margin-top: auto; padding: 14px 18px; border-top: 1px solid rgba(255, 255, 255, .07); font-size: 12px; }
.side-foot .who { color: #fff; font-weight: 500; }
.side-foot button { margin-top: 6px; }

.main { flex: 1; min-width: 0; }
.topbar { display: none; }
.content { padding: 24px 28px 48px; max-width: 1320px; }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.page-head .sub { color: var(--text-2); font-size: 13px; margin-top: 2px; }
.page-head .spacer { flex: 1; }

/* ---------- components ---------- */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card-head { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.card-head .spacer { flex: 1; }
.card-body { padding: 16px; }
.stack { display: flex; flex-direction: column; gap: 16px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.muted { color: var(--text-2); }
.faint { color: var(--text-3); }
.small { font-size: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 34px; padding: 0 14px;
  border-radius: 8px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font: inherit; font-weight: 500; cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--brand); color: var(--brand); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-hover); color: #fff; }
.btn.danger:hover { border-color: var(--err); color: var(--err); }
.btn.sm { height: 28px; padding: 0 10px; font-size: 12.5px; }
.btn.ghost { border-color: transparent; background: transparent; }
.sidebar .btn.ghost { color: var(--side-text); padding: 0; height: auto; }
.sidebar .btn.ghost:hover { color: #fff; }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.seg button { border: 0; background: transparent; padding: 6px 12px; font: inherit; color: var(--text-2); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }

label.field { display: flex; flex-direction: column; gap: 5px; font-size: 12.5px; color: var(--text-2); font-weight: 500; }
label.field .hint { font-weight: 400; color: var(--text-3); }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 10px; width: 100%; min-width: 0;
}
textarea { font-family: var(--mono); font-size: 12.5px; resize: vertical; min-height: 84px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-soft); border-color: var(--brand); }
input[type="checkbox"] { width: auto; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text); cursor: pointer; }
.form-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 12px 14px; }
.span-3 { grid-column: span 3; } .span-4 { grid-column: span 4; } .span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; } .span-9 { grid-column: span 9; } .span-12 { grid-column: span 12; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; }
.kpi { padding: 14px 16px; }
.kpi .label { color: var(--text-2); font-size: 12.5px; }
.kpi .value { font-size: 24px; font-weight: 600; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi .value small { font-size: 13px; font-weight: 500; color: var(--text-2); margin-left: 2px; }
.kpi .foot { font-size: 12px; color: var(--text-3); margin-top: 2px; }

table.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
.tbl th { font-size: 12px; color: var(--text-2); font-weight: 500; background: var(--surface-2); }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tbody tr:hover td { background: var(--surface-2); }
.tbl td.num, .tbl th.num { text-align: right; font-variant-numeric: tabular-nums; }
.tbl td.wrap { white-space: normal; word-break: break-all; }
.tbl tr.click { cursor: pointer; }
.table-wrap { overflow-x: auto; }

.badge {
  display: inline-flex; align-items: center; gap: 5px; padding: 1px 8px; border-radius: 999px;
  font-size: 12px; font-weight: 500; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border);
}
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.err { background: var(--err-soft); color: var(--err); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.brand { background: var(--brand-soft); color: var(--brand); border-color: transparent; }
.badge.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-3); display: inline-block; flex: none; }
.dot.ok { background: var(--ok); } .dot.err { background: var(--err); }
.method { font-family: var(--mono); font-size: 11.5px; font-weight: 700; }
.m-GET { color: var(--ok); } .m-POST { color: var(--brand); } .m-PUT, .m-PATCH { color: var(--warn); } .m-DELETE { color: var(--err); }

pre.code {
  margin: 0; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; overflow: auto; max-height: 520px; white-space: pre-wrap; word-break: break-all;
}
.empty { padding: 40px 16px; text-align: center; color: var(--text-3); }

.chart { width: 100%; height: 240px; position: relative; }
.chart svg { width: 100%; height: 100%; display: block; overflow: visible; }
.chart .grid line { stroke: var(--border); }
.chart .axis text { fill: var(--text-3); font-size: 11px; }
.chart .bar { fill: var(--brand); opacity: .85; }
.chart .bar.err { fill: var(--err); }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; }
.chart .pt { fill: var(--accent); }
.chart .hit { fill: transparent; }
.chart .hit:hover { fill: var(--brand-soft); opacity: .5; }
.chart-tip {
  position: absolute; pointer-events: none; background: var(--text); color: var(--surface); font-size: 12px;
  padding: 6px 9px; border-radius: 6px; white-space: nowrap; transform: translate(-50%, -110%); display: none; z-index: 2;
}
.legend { display: flex; gap: 14px; font-size: 12px; color: var(--text-2); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 12px; }
.tabs button { border: 0; background: none; padding: 8px 12px; font: inherit; color: var(--text-2); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }

.modal-bg { position: fixed; inset: 0; background: rgba(10, 12, 30, .45); display: flex; align-items: flex-start; justify-content: center; padding: 6vh 16px; z-index: 50; overflow-y: auto; }
.modal { width: 100%; max-width: 760px; }
.modal .card-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 60; display: flex; flex-direction: column; gap: 8px; }
.toast div { background: var(--text); color: var(--surface); padding: 10px 14px; border-radius: 8px; box-shadow: 0 6px 20px rgba(0, 0, 0, .2); max-width: 380px; }
.toast div.err { background: var(--err); color: #fff; }

.alert { padding: 10px 14px; border-radius: 8px; background: var(--warn-soft); color: var(--warn); font-size: 13px; }
.alert code { background: rgba(0, 0, 0, .06); padding: 1px 5px; border-radius: 4px; }

/* DeepSeek results */
.results { display: flex; flex-direction: column; gap: 12px; }
.result { padding: 14px 16px; }
.result .r-head { display: flex; gap: 10px; align-items: flex-start; }
.result .r-icon { width: 20px; height: 20px; border-radius: 4px; flex: none; margin-top: 2px; background: var(--surface-2); object-fit: contain; }
.result .r-title { font-size: 15px; font-weight: 600; line-height: 1.4; }
.result .r-url { font-size: 12px; color: var(--accent); word-break: break-all; }
.result .r-snippet { margin: 8px 0 0; color: var(--text); }
.result .r-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; align-items: center; }
.result details { margin-top: 10px; }
.result summary { cursor: pointer; color: var(--brand); font-size: 12.5px; }
.result details pre { margin-top: 8px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip { border: 1px dashed var(--border); background: var(--surface-2); color: var(--text-2); border-radius: 6px; padding: 2px 8px; font-family: var(--mono); font-size: 12px; cursor: pointer; }
.chip:hover { border-color: var(--brand); color: var(--brand); }

/* login */
.login-page { min-height: 100vh; display: flex; background: var(--surface); }
.login-brand {
  flex: 0 0 44%; max-width: 620px; background: var(--side-bg); color: #fff; padding: 56px 56px 40px;
  display: flex; flex-direction: column; position: relative; overflow: hidden;
}
.login-brand::after {
  content: ""; position: absolute; right: -160px; bottom: -160px; width: 420px; height: 420px; border-radius: 50%;
  border: 64px solid rgba(64, 70, 180, .35); pointer-events: none;
}
.login-brand-mark { width: 72px; height: 72px; margin-top: 8vh; }
.login-brand h1 { font-size: 32px; margin-top: 24px; letter-spacing: .5px; }
.login-brand-sub { color: var(--side-text); font-size: 15px; margin: 8px 0 36px; }
.login-points { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; color: #dcdef0; }
.login-points li { display: flex; align-items: center; gap: 12px; }
.login-points span { width: 18px; height: 8px; background: var(--accent); border-radius: 2px; transform: skewX(-30deg); flex: none; }
.login-brand-foot { margin-top: auto; color: var(--side-text); font-size: 12px; font-family: var(--mono); }
.login-main { flex: 1; display: flex; align-items: center; justify-content: center; padding: 40px 16px; background: var(--bg); }
.login-box { width: 100%; max-width: 380px; }
.login-logo { height: 52px; display: block; margin-bottom: 28px; }
.login-box h2 { font-size: 24px; }
.login-box > p { margin: 6px 0 28px; }
.login-box form { display: flex; flex-direction: column; gap: 16px; }
.login-box input { height: 42px; }
.login-box .btn { height: 44px; font-size: 15px; margin-top: 4px; }
.login-err { color: var(--err); font-size: 13px; min-height: 18px; margin-bottom: -6px; }
.login-copy { margin-top: 40px; color: var(--text-3); font-size: 12px; }
@media (max-width: 860px) {
  .login-brand { display: none; }
  .login-main { background: var(--surface); }
}

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .form-grid > * { grid-column: span 12; }
}
@media (max-width: 760px) {
  .layout { display: block; }
  .sidebar { position: fixed; left: 0; top: 0; z-index: 40; transform: translateX(-100%); transition: transform .2s; }
  .sidebar.open { transform: none; }
  .topbar { display: flex; align-items: center; gap: 10px; padding: 10px 16px; background: var(--side-bg); color: #fff; position: sticky; top: 0; z-index: 30; }
  .topbar img { width: 26px; height: 26px; }
  .topbar button { background: none; border: 0; color: #fff; font-size: 20px; cursor: pointer; padding: 0 4px; }
  .content { padding: 16px 16px 40px; }
}