/* SDE v1.1 — GitHub Pages site */
@import url("https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;700&family=IBM+Plex+Mono:wght@400;500&family=Source+Serif+4:opsz,wght@8..60,400;600&display=swap");

:root {
  --forest: #0B3D2E;
  --canopy: #1F7A5C;
  --moss: #3D8B6E;
  --paper: #F4F1EA;
  --card: #FFFcf7;
  --ink: #14241c;
  --muted: #5a7368;
  --line: #c5d5cc;
  --warn: #8B4513;
  --ok: #1F7A5C;
  --fail: #8B2020;
  --shadow: 0 12px 40px rgba(11, 61, 46, 0.08);
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  background:
    radial-gradient(1200px 600px at 10% -10%, #dce8e1 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #e8dfd0 0%, transparent 50%),
    var(--paper);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--forest); }
a:hover { color: var(--canopy); }

.site-header {
  padding: 1.25rem 1.5rem 0.5rem;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 241, 234, 0.85);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  max-width: 1100px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}
.brand img { height: 42px; width: auto; }
.brand-text strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}
.brand-text span { font-size: 0.8rem; color: var(--muted); }

nav.primary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  font-size: 0.92rem;
}
nav.primary a {
  text-decoration: none;
  color: var(--muted);
  padding: 0.2rem 0;
  border-bottom: 2px solid transparent;
}
nav.primary a:hover,
nav.primary a[aria-current="page"] {
  color: var(--forest);
  border-bottom-color: var(--canopy);
}

.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.75rem 1.5rem 1.5rem;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  max-width: 16ch;
}
.hero .lede {
  font-size: 1.15rem;
  max-width: 42rem;
  color: var(--muted);
  margin: 0 0 1.25rem;
}
.badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.25rem; }
.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
}
.chip.ok { border-color: var(--canopy); color: var(--ok); }
.chip.warn { border-color: #c4a574; color: var(--warn); }

.cta-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 1rem;
  padding: 0.65rem 1.15rem;
  border-radius: 6px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}
.btn-primary { background: var(--forest); color: #fff; }
.btn-primary:hover { background: var(--canopy); color: #fff; }
.btn-ghost { background: transparent; color: var(--forest); border: 1px solid var(--line); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow);
}
.card h2, .card h3 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
}
.card p { margin: 0 0 0.75rem; color: var(--muted); }

.pipeline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 1rem 0;
}
.phase {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.45rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #eef4f0;
  color: var(--muted);
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.phase.active {
  background: var(--forest);
  color: #fff;
  border-color: var(--forest);
  transform: translateY(-2px);
}
.phase.done {
  background: #d5e8de;
  color: var(--ok);
  border-color: var(--canopy);
}
.phase.fail {
  background: #f3d9d9;
  color: var(--fail);
  border-color: var(--fail);
}

.sim-panel {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.25rem;
}
@media (max-width: 800px) {
  .sim-panel { grid-template-columns: 1fr; }
}

.metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.metric {
  background: #eef4f0;
  border-radius: 8px;
  padding: 0.75rem;
}
.metric .label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.metric .value { font-family: var(--font-mono); font-size: 1.25rem; color: var(--forest); }

#log, .log {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: #12201a;
  color: #c8e6d5;
  padding: 1rem;
  border-radius: 8px;
  min-height: 220px;
  max-height: 360px;
  overflow: auto;
  white-space: pre-wrap;
  margin: 0;
}

.arch-explorer {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}
.arch-node {
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 1rem 0.75rem;
  text-align: center;
  cursor: pointer;
  background: var(--card);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.arch-node:hover, .arch-node.selected {
  border-color: var(--canopy);
  border-style: solid;
  box-shadow: var(--shadow);
}
.arch-node strong { display: block; font-family: var(--font-display); font-size: 0.95rem; }
.arch-node span { font-size: 0.8rem; color: var(--muted); }
#arch-detail {
  margin-top: 1rem;
  padding: 1rem;
  background: #eef4f0;
  border-radius: 8px;
  min-height: 4.5rem;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.data th, table.data td {
  text-align: left;
  padding: 0.55rem 0.4rem;
  border-bottom: 1px solid var(--line);
}
table.data th { font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted); }

.notice {
  border-left: 3px solid var(--canopy);
  padding: 0.75rem 1rem;
  background: #e8f0eb;
  margin: 1rem 0;
  font-size: 0.95rem;
}
.notice.warn { border-left-color: var(--warn); background: #f5efe4; }

footer.site-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}
code, pre code { font-family: var(--font-mono); }
code { background: #e6eee9; padding: 0.1rem 0.3rem; border-radius: 3px; }

/* Proof / demo media polish */
figure {
  margin: 0;
  background: #12201a;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
figure img {
  display: block;
  width: 100%;
  height: auto;
  vertical-align: middle;
}
figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: #a8c4b6;
  padding: 0.55rem 0.85rem 0.7rem;
  background: #0e1a15;
  border-top: 1px solid #1e3329;
}
.media-frame {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #12201a;
  box-shadow: var(--shadow);
}
.media-frame img {
  display: block;
  width: 100%;
  height: auto;
}
.chip.frozen {
  border-color: var(--forest);
  background: #e8f0eb;
  color: var(--forest);
  font-weight: 500;
}
.hero h1 { letter-spacing: -0.02em; }
.btn { transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.15s; }
.btn-primary:hover { transform: translateY(-1px); }
.card img { border-radius: 8px; }