/* =====================================================================
   NEXUS · §4.12 Integration Layer
   ===================================================================== */
body.nx-int { background: linear-gradient(180deg, var(--nx-ink-950), var(--nx-ink-900)); color: #FFF; min-height: 100vh; margin: 0; }
.int-shell { max-width: 1440px; margin: 0 auto; padding: 20px; }

.int-hero {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.10), rgba(59, 130, 246, 0.10));
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 16px;
  padding: 28px 32px;
  margin-bottom: 18px;
}
.int-hero .kicker { font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.14em; color: var(--nx-teal-400); font-weight: 900; text-transform: uppercase; }
.int-hero h1 { font-size: 30px; font-weight: 900; letter-spacing: -0.02em; margin: 8px 0 10px; }
.int-hero .lead { font-size: 14px; color: rgba(255,255,255,0.7); max-width: 760px; line-height: 1.55; }

/* Architecture stack diagram */
.stack {
  display: flex; flex-direction: column; gap: 8px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 18px;
}
.stack .row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px;
  align-items: center;
}
.stack .row .l {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.5);
  font-weight: 900;
  text-transform: uppercase;
  text-align: right;
}
.stack .layer {
  padding: 16px 20px;
  border-radius: 12px;
  border: 1px solid;
  position: relative;
}
.stack .layer .name { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em; font-weight: 900; text-transform: uppercase; }
.stack .layer .sub  { font-size: 12px; color: rgba(255,255,255,0.65); margin-top: 6px; line-height: 1.5; }

.stack .layer.exec {
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.15), rgba(6, 182, 212, 0.05));
  border-color: rgba(6, 182, 212, 0.4);
}
.stack .layer.exec .name { color: #67E8F9; }
.stack .layer.nexus {
  background: linear-gradient(90deg, rgba(147, 51, 234, 0.15), rgba(147, 51, 234, 0.05));
  border-color: rgba(147, 51, 234, 0.4);
}
.stack .layer.nexus .name { color: #C4B5FD; }
.stack .layer.api {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.12), rgba(245, 158, 11, 0.03));
  border-color: rgba(245, 158, 11, 0.35);
}
.stack .layer.api .name { color: #FBBF24; }
.stack .layer.systems {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.12);
}
.stack .layer.systems .name { color: rgba(255,255,255,0.7); }

/* Systems grid */
.sys-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.sys {
  padding: 14px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  cursor: pointer;
  transition: all 200ms ease;
}
.sys:hover { border-color: rgba(6, 182, 212, 0.4); transform: translateY(-1px); }
.sys .head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 8px; }
.sys .name { font-size: 13px; font-weight: 900; color: #FFF; }
.sys .status {
  padding: 2px 6px; border-radius: 4px;
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.06em; font-weight: 900;
}
.sys .status.live    { background: rgba(16, 185, 129, 0.15); color: #6EE7B7; }
.sys .status.warn    { background: rgba(245, 158, 11, 0.15); color: #FBBF24; }
.sys .status.pending { background: rgba(148, 163, 184, 0.15); color: #CBD5E1; }
.sys .desc { font-size: 11px; color: rgba(255,255,255,0.6); line-height: 1.5; margin-bottom: 8px; }
.sys .meta {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  padding-top: 8px; border-top: 1px solid rgba(255,255,255,0.06);
  font-family: var(--font-mono); font-size: 10px; color: rgba(255,255,255,0.55);
}
.sys .meta strong { color: #FFF; font-weight: 700; letter-spacing: 0.06em; }

.int-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 18px; }
@media (max-width: 900px) { .int-panels { grid-template-columns: 1fr; } }

.int-card {
  padding: 20px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
}
.int-card h3 { font-size: 14px; font-weight: 900; margin: 0 0 4px; letter-spacing: -0.01em; }
.int-card .sub { font-size: 12px; color: rgba(255, 255, 255, 0.55); margin-bottom: 12px; font-family: var(--font-mono); letter-spacing: 0.06em; }

/* API endpoint list */
.ep {
  display: grid; grid-template-columns: 60px 1fr 120px 80px;
  gap: 10px; align-items: center;
  padding: 10px 12px;
  background: rgba(0,0,0,0.3);
  border-radius: 6px;
  margin-bottom: 6px;
  font-family: var(--font-mono); font-size: 11px;
}
.ep .method {
  padding: 2px 6px; border-radius: 4px;
  text-align: center; font-weight: 900; font-size: 9px; letter-spacing: 0.06em;
}
.ep .method.get  { background: rgba(59, 130, 246, 0.2); color: #93C5FD; }
.ep .method.post { background: rgba(16, 185, 129, 0.2); color: #6EE7B7; }
.ep .method.put  { background: rgba(245, 158, 11, 0.2); color: #FBBF24; }
.ep .method.del  { background: rgba(239, 68, 68, 0.2); color: #FCA5A5; }
.ep .path { color: #FFF; }
.ep .counter { color: rgba(255,255,255,0.6); text-align: right; }
.ep .lat { color: rgba(255,255,255,0.55); text-align: right; }

/* Provenance ledger */
.prov-row {
  display: grid; grid-template-columns: 120px 1fr 100px;
  gap: 10px; align-items: center;
  padding: 10px 12px; background: rgba(0,0,0,0.3);
  border-radius: 6px; margin-bottom: 4px;
  font-family: var(--font-mono); font-size: 11px;
}
.prov-row .src { color: #67E8F9; font-weight: 700; letter-spacing: 0.06em; }
.prov-row .rec { color: #FFF; }
.prov-row .conf { text-align: right; font-weight: 900; }
.prov-row .conf.high { color: #6EE7B7; }
.prov-row .conf.med  { color: #FBBF24; }
.prov-row .conf.lo   { color: #FCA5A5; }

.int-actions {
  padding: 16px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap;
}
.int-actions button {
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px; font-weight: 700; cursor: pointer;
}
.int-actions .primary { background: var(--nx-teal-500); color: #032530; border: 0; }
.int-actions .primary:hover { background: var(--nx-teal-400); }
.int-actions .ghost   { background: transparent; color: rgba(255,255,255,0.7); border: 1px solid rgba(255,255,255,0.14); }
.int-actions .ghost:hover { color: #FFF; border-color: rgba(255,255,255,0.3); }