/* Agent Eval Planner — distinct from sibling gem sites */
:root {
  --bg: #060807;
  --bg-elevated: #0b100e;
  --panel: #0e1512;
  --panel-2: #121c18;
  --line: rgba(61, 255, 154, 0.14);
  --line-strong: rgba(61, 255, 154, 0.28);
  --text: #e8f5ee;
  --muted: #8aa396;
  --dim: #5c7368;
  --phosphor: #3dff9a;
  --phosphor-dim: rgba(61, 255, 154, 0.12);
  --amber: #ffb020;
  --critical: #ff4d6d;
  --cool: #7dd3fc;
  --font: "Space Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --header-h: 68px;
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 4px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
code, pre { font-family: var(--mono); }

.wrap {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Atmosphere */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(61, 255, 154, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 255, 154, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 50% 20%, black 20%, transparent 75%);
}
.scanlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.04;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.5) 3px
  );
}
.vignette {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.55) 100%);
}

.site-header,
main,
.site-footer { position: relative; z-index: 2; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  height: var(--header-h);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 8, 7, 0.85);
  backdrop-filter: blur(12px);
}
.nav {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand__mark {
  width: 28px;
  height: 28px;
  border: 1px solid var(--phosphor);
  color: var(--phosphor);
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  box-shadow: 0 0 16px rgba(61, 255, 154, 0.2);
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.nav__links a:hover { color: var(--phosphor); }
.nav__cta {
  border: 1px solid var(--line-strong);
  padding: 0.4rem 0.75rem;
  color: var(--phosphor) !important;
  background: var(--phosphor-dim);
}
.nav__cta:hover { border-color: var(--phosphor); }
.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  width: 42px;
  height: 42px;
  place-items: center;
  gap: 5px;
  flex-direction: column;
  cursor: pointer;
}
.nav__toggle span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--text);
}

/* Hero */
.hero {
  padding: 4.5rem 0 3.5rem;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2.5rem;
  align-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--phosphor);
  margin-bottom: 1rem;
}
.kicker::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--phosphor);
  box-shadow: 0 0 12px var(--phosphor);
  animation: pulse 1.8s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
.hero h1 {
  font-size: clamp(2.4rem, 5.2vw, 3.8rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 600;
  margin-bottom: 1rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--phosphor);
  text-shadow: 0 0 28px rgba(61, 255, 154, 0.25);
}
.hero__lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 36rem;
  margin-bottom: 1.5rem;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: 0.2s var(--ease);
}
.btn--primary {
  background: var(--phosphor);
  color: #04110a;
}
.btn--primary:hover { filter: brightness(1.08); box-shadow: 0 0 24px rgba(61, 255, 154, 0.35); }
.btn--ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: transparent;
}
.btn--ghost:hover { border-color: var(--phosphor); color: var(--phosphor); }

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  padding: 0.35rem 0.55rem;
  color: var(--muted);
  background: var(--bg-elevated);
}
.chip--hot { color: var(--critical); border-color: rgba(255, 77, 109, 0.35); }
.chip--ok { color: var(--phosphor); border-color: var(--line-strong); }

/* Terminal panel */
.panel {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line);
  box-shadow:
    0 0 0 1px rgba(0, 0, 0, 0.4),
    0 24px 60px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(61, 255, 154, 0.08);
}
.panel__bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
}
.panel__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
}
.panel__dot:nth-child(1) { background: var(--critical); }
.panel__dot:nth-child(2) { background: var(--amber); }
.panel__dot:nth-child(3) { background: var(--phosphor); }
.panel__body {
  padding: 1rem 1rem 1.15rem;
  font-size: 0.78rem;
  line-height: 1.55;
  overflow-x: auto;
  color: var(--muted);
}
.panel__body .ok { color: var(--phosphor); }
.panel__body .warn { color: var(--amber); }
.panel__body .bad { color: var(--critical); }
.panel__body .key { color: var(--cool); }
.panel__body .muted { color: var(--dim); }

.panel__link {
  margin-left: auto;
  color: var(--phosphor);
  font-size: 0.7rem;
}
.panel__link:hover { text-decoration: underline; }

/* Evidence */
.evidence { display: grid; gap: 1rem; }
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tab {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  color: var(--muted);
  cursor: pointer;
}
.tab:hover { color: var(--text); border-color: var(--line-strong); }
.tab.is-active {
  color: #04110a;
  background: var(--phosphor);
  border-color: var(--phosphor);
}
.tab-panel[hidden] { display: none !important; }
.evidence__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-family: var(--mono);
  font-size: 0.78rem;
}
.evidence__links a { color: var(--phosphor); border-bottom: 1px solid rgba(61, 255, 154, 0.35); }
.evidence__links a:hover { border-bottom-color: var(--phosphor); }

/* Sections */
.section { padding: 4rem 0; }
.section--band {
  background: linear-gradient(180deg, rgba(14, 21, 18, 0.7), rgba(6, 8, 7, 0.2));
  border-block: 1px solid var(--line);
}
.section__head {
  margin-bottom: 2rem;
  max-width: 40rem;
}
.section__head .kicker { margin-bottom: 0.6rem; }
.section__head h2 {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.65rem;
}
.section__head p { color: var(--muted); }

.prose {
  color: var(--muted);
  max-width: 46rem;
  display: grid;
  gap: 0.9rem;
}
.prose strong { color: var(--text); font-weight: 500; }

/* Pipeline */
.pipeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.pipe {
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 1.25rem;
  min-height: 100%;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.pipe:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.pipe--focus {
  border-color: rgba(61, 255, 154, 0.4);
  background: linear-gradient(180deg, rgba(61, 255, 154, 0.08), var(--bg-elevated));
}
.pipe__id {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--phosphor);
  margin-bottom: 0.75rem;
}
.pipe h3 {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.pipe p { color: var(--muted); font-size: 0.92rem; margin-bottom: 0.9rem; }
.pipe ul {
  display: grid;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.88rem;
}
.pipe li::before {
  content: "› ";
  color: var(--phosphor);
  font-family: var(--mono);
}

/* Taxonomy matrix */
.matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
}
.cell {
  border: 1px solid var(--line);
  padding: 1rem;
  background: rgba(11, 16, 14, 0.8);
}
.cell__code {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--phosphor);
  margin-bottom: 0.4rem;
}
.cell h3 { font-size: 0.98rem; margin-bottom: 0.35rem; }
.cell p { color: var(--muted); font-size: 0.85rem; }
.sev {
  display: inline-block;
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.4rem;
  border: 1px solid currentColor;
}
.sev--p0 { color: var(--critical); }
.sev--p1 { color: var(--amber); }

/* Checklist */
.check {
  display: grid;
  gap: 0.75rem;
}
.check li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  border: 1px solid var(--line);
  padding: 1rem 1.1rem;
  background: var(--bg-elevated);
}
.check__mark {
  font-family: var(--mono);
  color: var(--phosphor);
  margin-top: 0.15rem;
}
.check strong { display: block; margin-bottom: 0.2rem; }
.check span { color: var(--muted); font-size: 0.92rem; }

/* Install */
.install {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.5rem;
  align-items: start;
}
.cmd {
  border: 1px solid var(--line);
  background: #070b09;
  margin-bottom: 0.75rem;
}
.cmd__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.55rem 0.8rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--dim);
}
.copy-btn {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  padding: 0.2rem 0.45rem;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.68rem;
}
.copy-btn:hover, .copy-btn.copied {
  color: var(--phosphor);
  border-color: var(--line-strong);
}
.cmd code {
  display: block;
  padding: 0.85rem 0.9rem;
  color: var(--text);
  font-size: 0.82rem;
  overflow-x: auto;
}

/* CTA */
.cta {
  text-align: center;
  padding: 3rem 1.25rem;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(180deg, rgba(61, 255, 154, 0.06), transparent),
    var(--bg-elevated);
}
.cta h2 { margin-bottom: 0.5rem; letter-spacing: -0.03em; }
.cta p { color: var(--muted); margin-bottom: 1.25rem; }
.cta__links { display: flex; justify-content: center; gap: 0.75rem; flex-wrap: wrap; }

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--dim);
  font-size: 0.88rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-footer a:hover { color: var(--phosphor); }

/* Reveal */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal--delay { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.18s; }

@media (max-width: 900px) {
  .hero, .install, .pipeline { grid-template-columns: 1fr; }
  .matrix { grid-template-columns: 1fr 1fr; }
  .nav__toggle { display: grid; }
  .nav__links {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    background: rgba(6, 8, 7, 0.96);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    display: none;
  }
  .nav__links.open { display: flex; }
}

@media (max-width: 560px) {
  .matrix { grid-template-columns: 1fr; }
}