:root {
  --bg: #070b12;
  --surface: #111827;
  --surface-alt: #0b111e;
  --border: #1f2937;
  --text: #f9fafb;
  --muted: #9ca3af;
  --accent: #38bdf8;
  --green: #10b981;
  --amber: #f59e0b;
  --red: #f43f5e;
  --purple: #a855f7;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  padding: 1.75rem 1.25rem 4rem;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
}

header.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.25rem;
}

.brand-logo {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 0.4rem 0.75rem;
  border-radius: 8px;
  border: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
}

.pill {
  display: inline-block;
  background: rgba(56, 189, 248, 0.14);
  color: var(--accent);
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 0.9rem;
}

.pill-green {
  background: rgba(16, 185, 129, 0.14);
  color: var(--green);
  border-color: rgba(16, 185, 129, 0.35);
}

.pill-red {
  background: rgba(244, 63, 94, 0.14);
  color: #fda4af;
  border-color: rgba(244, 63, 94, 0.35);
}

.hero {
  text-align: center;
  margin-bottom: 2.75rem;
}

.hero h1 {
  font-size: clamp(1.95rem, 4.2vw, 3.1rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
  max-width: 860px;
  margin: 0 auto 0.9rem;
}

.hero p {
  color: var(--muted);
  max-width: 680px;
  margin: 0 auto 1.5rem;
  font-size: 1.05rem;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 2.25rem;
}

.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem;
}

.kpi-label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.kpi-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  margin-top: 0.25rem;
}

.kpi-value.green {
  color: var(--green);
}

.kpi-value.red {
  color: var(--red);
}

.kpi-sub {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card h2,
.card h3 {
  margin-bottom: 0.5rem;
}

.muted {
  color: var(--muted);
  font-size: 0.9rem;
}

.math-box {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.9rem;
  font-size: 0.86rem;
  margin: 0.9rem 0;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
  width: 100%;
  background: var(--surface-alt);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.7rem;
  font-family: inherit;
  font-size: 0.9rem;
  margin-bottom: 0.9rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  margin-bottom: 0.9rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.35rem;
  border-radius: 9px;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  text-align: center;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #38bdf8);
  color: #04101c;
}

.btn-green {
  background: var(--green);
  color: #04130d;
}

.btn-outline {
  background: #1e293b;
  color: var(--text);
  border: 1px solid #334155;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.tag {
  font-size: 0.75rem;
  background: rgba(168, 85, 247, 0.15);
  color: #d8b4fe;
  padding: 0.18rem 0.6rem;
  border-radius: 99px;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

table.data-table th,
table.data-table td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

table.data-table th {
  color: var(--muted);
  font-weight: 600;
}

footer.site-footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

/* ScopePilot installation and first-use guide. */
.setup-section { scroll-margin-top: 1.5rem; }
.setup-heading { max-width: 780px; margin: 0 auto 1.5rem; text-align: center; }
.setup-heading h2 { font-size: clamp(1.5rem, 3vw, 2rem); line-height: 1.2; margin-bottom: 0.65rem; }
.setup-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.setup-grid .card { justify-content: flex-start; gap: 0.75rem; min-width: 0; }
.setup-grid a:not(.btn) { color: var(--accent); }
.setup-steps { padding-left: 1.35rem; }
.setup-steps li { padding-left: 0.2rem; margin: 0.7rem 0; }
.setup-grid code { color: #bae6fd; overflow-wrap: anywhere; }
.setup-help { border-top: 1px solid var(--border); padding-top: 0.9rem; }
.setup-help summary { cursor: pointer; color: var(--accent); font-weight: 600; }
.setup-help p { margin-top: 0.75rem; }
@media (max-width: 700px) { .setup-grid { grid-template-columns: minmax(0, 1fr); } }