:root {
  --bg: #0f1420;
  --bg2: #161c2b;
  --panel: #1b2233;
  --panel2: #202a3d;
  --border: #2a3448;
  --text: #e6ebf2;
  --muted: #8a94a8;
  --accent: #4f8cff;
  --green: #2ecc71;
  --red: #ff5d5d;
  --amber: #f5a623;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang HK", "Microsoft JhengHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.green { color: var(--green); }
.red { color: var(--red); }
.amber { color: var(--amber); }
.small { font-size: 12px; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px;
}
.login-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 32px; width: 100%; max-width: 420px;
}
.brand { display: flex; gap: 14px; align-items: center; margin-bottom: 24px; }
.brand-logo {
  width: 48px; height: 48px; border-radius: 12px; background: var(--accent);
  display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 18px; color: #fff;
}
.brand h1 { font-size: 20px; }
.brand .sub { color: var(--muted); font-size: 12px; }
form label { display: block; margin: 12px 0 4px; color: var(--muted); font-size: 12px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
.error-text { color: var(--red); margin-top: 10px; min-height: 18px; }
.disclaimer { margin-top: 20px; padding: 12px; background: var(--bg2); border-radius: 8px; color: var(--muted); font-size: 12px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 16px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--panel2); color: var(--text); cursor: pointer; font-size: 13px;
}
.btn:hover { filter: brightness(1.1); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { background: transparent; }
.btn.danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn.full { width: 100%; margin-top: 16px; }
.btn.small { padding: 5px 10px; font-size: 12px; }

/* ---------- Layout ---------- */
.topbar {
  display: flex; align-items: center; gap: 14px; padding: 12px 20px;
  background: var(--panel); border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.topbar-brand { font-weight: 700; font-size: 16px; }
.topbar-status { display: flex; gap: 8px; margin-left: auto; flex-wrap: wrap; }
.topbar-user { display: flex; align-items: center; gap: 8px; }
.nav-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; }

.layout { display: flex; min-height: calc(100vh - 57px); }
.sidebar {
  width: 230px; background: var(--panel); border-right: 1px solid var(--border);
  padding: 12px; flex-shrink: 0;
}
.nav-item {
  display: block; padding: 11px 14px; border-radius: 8px; color: var(--muted);
  cursor: pointer; margin-bottom: 2px; text-decoration: none; font-size: 14px;
}
.nav-item:hover { background: var(--panel2); color: var(--text); }
.nav-item.active { background: var(--accent); color: #fff; }

.content { flex: 1; padding: 20px; max-width: 1200px; margin: 0 auto; width: 100%; }
.page-title { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.page-title .sub { font-size: 13px; font-weight: 400; color: var(--muted); }

/* ---------- Pills / badges ---------- */
.pill {
  display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px;
  background: var(--panel2); border: 1px solid var(--border);
}
.pill.role { background: var(--accent); color: #fff; border: none; }
.pill.ok { background: rgba(46,204,113,.15); color: var(--green); }
.pill.warn { background: rgba(245,166,35,.15); color: var(--amber); }
.pill.bad { background: rgba(255,93,93,.15); color: var(--red); }
.pill.neutral { background: var(--panel2); color: var(--muted); }

/* ---------- Cards / KPIs ---------- */
.kpi-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; margin-bottom: 20px;
}
.kpi {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px;
}
.kpi .label { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.kpi .value { font-size: 22px; font-weight: 700; }
.kpi .delta { font-size: 12px; margin-top: 4px; }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; margin-bottom: 18px;
}
.card h3 { font-size: 15px; margin-bottom: 12px; }
.chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 18px; }
.chart-box { position: relative; height: 260px; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 600; background: var(--panel2); cursor: pointer; position: sticky; top: 0; }
tr:hover td { background: rgba(79,140,255,.06); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select { width: auto; }

/* ---------- Research ---------- */
.signal-row { cursor: pointer; }
.score-bar { height: 6px; background: var(--bg2); border-radius: 3px; overflow: hidden; margin-top: 4px; }
.score-bar > span { display: block; height: 100%; background: var(--accent); }
.score-pill { font-weight: 700; }
.detail-panel { padding: 16px; background: var(--bg2); border-radius: 8px; margin-top: 8px; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 6px; background: var(--panel2); font-size: 11px; margin: 2px; }

/* ---------- Alert banner ---------- */
.banner { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-weight: 600; }
.banner.warning { background: rgba(245,166,35,.12); color: var(--amber); border: 1px solid rgba(245,166,35,.3); }
.banner.freeze { background: rgba(255,93,93,.12); color: var(--red); border: 1px solid rgba(255,93,93,.3); }
.banner.info { background: rgba(79,140,255,.12); color: var(--accent); border: 1px solid rgba(79,140,255,.3); }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.field label { display: block; color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.field textarea { min-height: 70px; resize: vertical; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.6); display: flex; align-items: center;
  justify-content: center; z-index: 100; padding: 20px;
}
.modal {
  background: var(--panel); border: 1px solid var(--border); border-radius: 16px;
  padding: 24px; max-width: 720px; width: 100%; max-height: 90vh; overflow-y: auto;
}
.modal h3 { margin-bottom: 16px; }

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .nav-toggle { display: block; }
  .sidebar { position: fixed; left: -240px; top: 57px; bottom: 0; z-index: 50; transition: left .2s; }
  .sidebar.open { left: 0; }
  .topbar-user { margin-left: auto; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}