/* Sentinel Signals — plain CSS, no framework. Dark by default. */
:root {
  --bg:       #0b0f17;
  --bg-card:  #121826;
  --border:   #1f2937;
  --text:     #e5e7eb;
  --muted:    #9ca3af;
  --accent:   #4ade80;
  --win:      #4ade80;
  --loss:     #f87171;
  --void:     #9ca3af;
  --open:     #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  margin: 0;
  padding: 0;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--border);
}
.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
}
.topbar nav a {
  margin-left: 1.5rem;
  color: var(--muted);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem;
}

.hero h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.lede { color: var(--muted); max-width: 720px; }

.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
}
.kpi {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1rem 1.25rem;
}
.kpi-label { color: var(--muted); font-size: 0.85rem; }
.kpi-value { font-size: 1.75rem; font-weight: 700; margin-top: 0.25rem; }
.kpi-value.pos { color: var(--win); }
.kpi-value.neg { color: var(--loss); }

.chart-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin: 2rem 0;
}
.chart-wrap h2 { margin-top: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  padding: 0.6rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th { color: var(--muted); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; }
td.pos { color: var(--win); }
td.neg { color: var(--loss); }

.badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.badge.win  { background: rgba(74,222,128,0.15); color: var(--win); }
.badge.loss { background: rgba(248,113,113,0.15); color: var(--loss); }
.badge.void { background: rgba(156,163,175,0.15); color: var(--void); }
.badge.open { background: rgba(251,191,36,0.15); color: var(--open); }

footer {
  max-width: 960px;
  margin: 3rem auto 2rem;
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
}
.disclaimer { max-width: 720px; }

.about h2 { margin-top: 2rem; }
.about ul { color: var(--muted); }