/* ============================================================
   ARCHITECTURE PAGE
   ============================================================ */

.arch-header { margin-bottom: 40px; }
.arch-header p {
  color: var(--text-dim);
  max-width: 580px;
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.7;
}

/* ── Demo note ────────────────────────────────────────────── */
.arch-demo-note {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 32px;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 4px;
}
.arch-demo-note a { color: var(--amber); text-decoration: none; }
.arch-demo-note a:hover { text-decoration: underline; }

/* ── Pipeline flow ────────────────────────────────────────── */
.arch-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  position: relative;
}

.arch-connector {
  width: 2px;
  height: 28px;
  background: var(--border2);
  position: relative;
  overflow: hidden;
}
.arch-connector::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--green);
  transition: top 0.4s ease;
}
.arch-connector--lit::after { top: 0; }

/* Parallel row (Technical + Fundamental side by side) */
.arch-parallel {
  display: grid;
  grid-template-columns: 1fr 64px 1fr;
  align-items: start;
  width: 100%;
  max-width: 700px;
}
.arch-parallel-connectors {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 0;
}
.arch-parallel-join {
  width: 2px;
  height: 28px;
  background: var(--border2);
  position: relative;
  overflow: hidden;
}
.arch-parallel-join::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0; right: 0; bottom: 0;
  background: var(--green);
  transition: top 0.4s ease;
}
.arch-parallel-join--lit::after { top: 0; }

/* Horizontal bridge connecting parallel columns to center */
.arch-bridge {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 0;
  width: 100%;
}
.arch-bridge-line {
  height: 2px;
  flex: 1;
  background: var(--border2);
  margin-top: 52px; /* align with node mid-top */
  position: relative;
  overflow: hidden;
}
.arch-bridge-line::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.arch-bridge-line--right::after { transform-origin: right; }
.arch-bridge-line--lit::after { transform: scaleX(1); }

/* ── Agent node ───────────────────────────────────────────── */
.arch-node {
  width: 100%;
  max-width: 460px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 6px;
  padding: 16px 20px;
  transition: border-color .3s, background .3s, box-shadow .3s;
  position: relative;
}
.arch-parallel .arch-node { max-width: none; }

.arch-node--running {
  border-color: var(--amber);
  background: rgba(240, 165, 0, 0.04);
  box-shadow: 0 0 20px rgba(240, 165, 0, 0.08);
  animation: arch-pulse 1.6s ease-in-out infinite;
}
.arch-node--done {
  border-color: var(--green-dim);
  background: rgba(0, 200, 150, 0.04);
  box-shadow: 0 0 16px rgba(0, 200, 150, 0.06);
  animation: none;
}

@keyframes arch-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(240,165,0,0); }
  50%       { box-shadow: 0 0 24px rgba(240,165,0,0.14); }
}

.arch-node-phase {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.arch-node-name {
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.arch-node--running .arch-node-name { color: var(--amber); }
.arch-node--done    .arch-node-name { color: var(--green); }

.arch-node-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 10px;
}
.arch-node-tool {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-dim);
  background: var(--border);
  border-radius: 3px;
  padding: 2px 7px;
}
.arch-node-model {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--amber-dim);
  background: var(--amber-glow);
  border-radius: 3px;
  padding: 2px 7px;
}

.arch-node-status {
  position: absolute;
  top: 14px;
  right: 16px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .06em;
}
.arch-node--running .arch-node-status { color: var(--amber); }
.arch-node--done    .arch-node-status { color: var(--green); }


/* ── Tech stack section ───────────────────────────────────── */
.arch-stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 48px;
}
.arch-stack-card {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 6px;
  padding: 14px 16px;
}
.arch-stack-layer {
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}
.arch-stack-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}
.arch-stack-desc {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
  line-height: 1.5;
}

@media (max-width: 600px) {
  .arch-parallel { grid-template-columns: 1fr; gap: 0; }
  .arch-parallel-connectors { display: none; }
  .arch-bridge { display: none; }
}