/* whitelabel-experiments — minimal site styles.
   matches the brand book in whitelabel-web-app/docs/BRAND.md:
   - Inter sans + JetBrains Mono
   - 4-token neutral palette
   - lowercase voice
   - no marketing fluff. */

:root {
  --bg:        #ffffff;
  --ink:       #0a0a0a;
  --ink-soft:  #2b2b2b;
  --line:      #1a1a1a;
  --line-soft: #e6e6e6;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--ink); color: var(--bg); }

a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: border-color 120ms ease;
}
a:hover { border-bottom-color: var(--ink); }

main {
  max-width: 56rem;
  margin: 0 auto;
  padding: 3rem 1.6rem 4rem;
}

/* ── nav ───────────────────────────────────────────────── */

.nav {
  max-width: 56rem;
  margin: 0 auto;
  padding: 1.3rem 1.6rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav .brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  border-bottom: 0;
}

.logo {
  display: inline-block;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--ink);
  position: relative;
  flex-shrink: 0;
}
.logo::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1.5px solid var(--ink);
}

.nav-links {
  margin-left: auto;
  display: flex;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}
.nav-links a {
  color: rgba(0, 0, 0, 0.6);
  border-bottom: 0;
}
.nav-links a:hover { color: var(--ink); }

.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.6);
  transition: color 120ms ease;
}
.nav-dropdown-toggle:hover { color: var(--ink); }

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  list-style: none;
  margin: 0;
  padding: 0.4rem 0;
  background: var(--bg);
  border: 1px solid var(--line-soft);
  border-radius: 0.3rem;
  min-width: 9rem;
  z-index: 10;
}
.nav-dropdown-menu li a {
  display: block;
  padding: 0.4rem 0.9rem;
  color: rgba(0, 0, 0, 0.6);
  border-bottom: 0;
  white-space: nowrap;
}
.nav-dropdown-menu li a:hover { color: var(--ink); background: rgba(0,0,0,0.03); }
.nav-dropdown.open .nav-dropdown-menu { display: block; }

/* ── hero ──────────────────────────────────────────────── */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: rgba(0, 0, 0, 0.55);
  margin: 0 0 0.5rem 0;
}

h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 400;
  letter-spacing: -0.015em;
  margin: 0 0 0.7rem 0;
  line-height: 1.15;
}

h2 {
  font-size: 1.1rem;
  font-weight: 500;
  margin: 2.5rem 0 0.8rem 0;
  letter-spacing: -0.005em;
}

h2 .num {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: rgba(0, 0, 0, 0.4);
  margin-right: 0.5rem;
  letter-spacing: 0.06em;
}

.summary {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0 0 2.5rem 0;
  line-height: 1.7;
  max-width: 42rem;
}

.summary strong { color: var(--ink); font-weight: 500; }

p { color: var(--ink-soft); margin: 0 0 1rem 0; }

ul { padding-left: 1.2rem; }
li { color: var(--ink-soft); margin-bottom: 0.4rem; }

code, .mono {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--ink);
}
code {
  background: rgba(0, 0, 0, 0.04);
  padding: 0.1rem 0.35rem;
  border-radius: 0.2rem;
}

/* ── experiment list ───────────────────────────────────── */

.experiment-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.experiment {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--line-soft);
  border-radius: 0.35rem;
  background: var(--bg);
}

.experiment .dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  flex-shrink: 0;
}
.experiment .dot.active     { background: #d97706; }
.experiment .dot.graduated  { background: #16a34a; }
.experiment .dot.archived   { background: #6b7280; }
.experiment .dot.killed     { background: #b91c1c; }

.experiment .info { flex: 1; min-width: 0; }
.experiment .title { font-size: 0.95rem; color: var(--ink); }
.experiment .meta {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.5);
  margin-top: 0.2rem;
}

.empty {
  padding: 1.6rem 1rem;
  border: 1px dashed var(--line-soft);
  border-radius: 0.35rem;
  text-align: center;
  color: rgba(0, 0, 0, 0.5);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  background: rgba(0, 0, 0, 0.015);
}

/* ── footer ────────────────────────────────────────────── */

.footer {
  max-width: 56rem;
  margin: 0 auto;
  padding: 2rem 1.6rem 3rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--line-soft);
}
.footer a {
  color: rgba(0, 0, 0, 0.7);
  border-bottom: 0;
}
.footer a:hover { color: var(--ink); }
.footer .dot-sep { color: rgba(0, 0, 0, 0.3); }

@media (max-width: 600px) {
  .nav-links { gap: 1rem; }
  main { padding: 2rem 1.2rem 3rem; }
  .footer { padding: 1.5rem 1.2rem 2rem; }
}