:root {
  --bg: #0e1116;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #7d8590;
  --accent: #2f81f7;
  --green: #2ea043;
  --red: #f85149;
  --amber: #d29922;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
}

.brand {
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}

nav a, .back {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}

nav a:hover, .back:hover { color: var(--accent); }

main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

h1 { font-size: 22px; margin: 0 0 16px; font-weight: 600; }
h2 { font-size: 16px; margin: 32px 0 12px; font-weight: 600; }

.desc {
  color: var(--muted);
  font-size: 12px;
  margin-top: 4px;
}

.meta {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 24px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

th, td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

th {
  background: rgba(255, 255, 255, 0.02);
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.04em;
}

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

td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.status {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}
.status.success { background: rgba(46, 160, 67, 0.15); color: var(--green); }
.status.failed  { background: rgba(248, 81, 73, 0.15); color: var(--red); }
.status.skipped { background: rgba(125, 133, 144, 0.15); color: var(--muted); }
.status.none    { background: rgba(125, 133, 144, 0.15); color: var(--muted); }

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
  margin: 16px 0 24px;
}
.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 16px;
}
.metric .label {
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.metric .value {
  font-size: 20px;
  font-variant-numeric: tabular-nums;
  margin-top: 4px;
}

.new-open { background: rgba(46, 160, 67, 0.06); }

.empty {
  color: var(--muted);
  padding: 24px;
  background: var(--panel);
  border: 1px dashed var(--border);
  border-radius: 6px;
}

/* Login */
.login-card {
  max-width: 320px;
  margin: 80px auto 0;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}
.login-card form { display: flex; flex-direction: column; gap: 12px; }
.login-card input {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card button {
  background: var(--accent);
  color: white;
  border: 0;
  padding: 10px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
}
.login-card button:hover { filter: brightness(1.1); }
.login-card .error {
  color: var(--red);
  margin: 0;
  font-size: 12px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: rgba(255,255,255,0.05);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 12px;
}

/* Date navigation header on strategy page */
.date-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 24px 0 12px 0;
  gap: 12px;
}
.date-nav .nav-btn {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  text-decoration: none;
  white-space: nowrap;
}
.date-nav .nav-btn:hover { background: rgba(255,255,255,0.1); }
.date-nav .nav-btn.disabled {
  opacity: 0.4;
  cursor: default;
}
.date-nav .snap-date {
  margin: 0;
  flex: 1;
  text-align: center;
  font-size: 18px;
}
.date-nav .snap-date small {
  font-weight: 400;
  opacity: 0.7;
  font-size: 13px;
  margin-left: 6px;
}

/* Rank-change / score-delta indicators */
.rank-up   { color: #22c55e; }   /* green */
.rank-down { color: #ef4444; }   /* red */
.muted     { opacity: 0.4; }

table.positions th, table.positions td { padding: 4px 8px; }
table.positions th.num, table.positions td.num { text-align: right; }

.ext-link {
  font-size: 11px;
  margin-left: 4px;
  opacity: 0.5;
  text-decoration: none;
}
.ext-link:hover { opacity: 1; }