/* ============================================================
   Falcon marchitecture diagram — shared component
   Used on product.html (full) and index.html (compact)
   ============================================================ */

/* ---------- Diagram frame ---------- */
.march-stage {
  background: #fff;
  border: 1px solid var(--site-rule-strong);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

/* Top bar — file-style header */
.march-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--site-rule);
  background: var(--site-bg-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--site-ink-3);
}
.march-bar .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--site-ink-3);
  opacity: 0.5;
}
.march-bar .dot.live { background: var(--brand-orange); opacity: 1; }
.march-bar .spacer { flex: 1; }

/* ---------- Diagram grid: upstream | platform | downstream ---------- */
.march-grid {
  display: grid;
  grid-template-columns: 200px 1fr 200px;
  align-items: stretch;
  background: var(--site-bg);
}

/* Generic side rails */
.rail {
  padding: 28px 20px;
  background: var(--site-bg-2);
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.rail .rail-head {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--site-ink-3);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--site-rule);
}
.rail-group .group-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--site-ink-3);
  margin-bottom: 10px;
}
.rail-group .group-items {
  display: grid;
  gap: 4px;
}
.rail-item {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  background: #fff;
  border: 1px solid var(--site-rule);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--site-ink-2);
  transition: border-color var(--dur-micro), color var(--dur-micro);
}
.rail-item:hover {
  border-color: var(--site-ink);
  color: var(--site-ink);
}
.rail-item .glyph {
  width: 22px; height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--site-rule-strong);
  border-radius: 3px;
  color: var(--site-ink);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0;
}

/* Right rail — items right-aligned */
.rail.rail-right .rail-item {
  grid-template-columns: 1fr 24px;
  text-align: right;
}
.rail.rail-right .rail-item .glyph { order: 2; }
.rail.rail-right .rail-item .label { order: 1; }

/* ---------- The platform column ---------- */
.platform {
  background: var(--ink-900);
  color: var(--fg-on-ink);
  padding: 28px;
  position: relative;
}
.platform::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at top right, rgba(247, 91, 4, 0.10), transparent 50%),
    radial-gradient(ellipse at bottom left, rgba(121, 34, 240, 0.10), transparent 50%);
  pointer-events: none;
}

.platform-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 20px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--ink-700);
  position: relative;
}
.platform-head .mark {
  width: 28px; height: 28px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.platform-head .mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.platform-head .title {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-on-ink);
  font-weight: 400;
}
.platform-head .title em {
  font-style: normal;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.platform-head .meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--fg-on-ink-3);
}

/* Platform layers */
.layers {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
}

.layer {
  position: relative;
  border: 1px solid var(--ink-700);
  border-radius: 6px;
  background: var(--ink-800);
  padding: 18px 18px 20px;
}
.layer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.layer-head .l-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-on-ink-2);
}
.layer-head .l-label-emp {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-orange);
  margin-bottom: 10px;
}
.layer-head .l-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--fg-on-ink-3);
}

.l-cells {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.cell {
  padding: 12px 14px;
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--fg-on-ink);
  transition: background var(--dur-micro), border-color var(--dur-micro);
  cursor: default;
}
.cell:hover {
  background: var(--ink-600);
  border-color: var(--brand-orange);
}

/* Control plane — top, light surface */
.layer.control {
  background: rgba(245, 241, 251, 0.06);
  border-color: rgba(181, 169, 201, 0.25);
}
.layer.control .cell {
  background: rgba(245, 241, 251, 0.08);
  border-color: rgba(181, 169, 201, 0.20);
}
.layer.control .cell:hover {
  background: rgba(245, 241, 251, 0.14);
  border-color: var(--fg-on-ink-2);
}

/* Job Execution */
.layer.orchestration {
  background: rgba(247, 91, 4, 0.05);
  border-color: rgba(247, 91, 4, 0.20);
}
.layer.orchestration .l-label {
  color: var(--brand-orange);
}
.layer.orchestration .cell:hover {
  background: rgba(245, 241, 251, 0.14);
  border-color: var(--fg-on-ink-2);
}

/* Hyper-Optimized Engine — gradient-stroked emphasis */
.layer.exec {
  background: transparent;
  border: 1px dashed transparent;
  background-image:
    linear-gradient(var(--ink-900), var(--ink-900)),
    var(--brand-gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  padding: 22px 18px 20px;
}
.layer.exec::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 14px;
  width: 192px;
  height: 1px;
  background: var(--ink-900);
}
.layer.exec::after {
  content: "Hyper-Optimized Engine";
  position: absolute;
  top: -8px;
  left: 16px;
  padding: 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: var(--ink-900);
  background-image: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}
.layer.exec .cell {
  background: rgba(247, 91, 4, 0.06);
  border-color: rgba(247, 91, 4, 0.22);
}
.layer.exec .cell:hover {
  background: rgba(247, 91, 4, 0.12);
  border-color: var(--brand-orange);
}

/* Sub-layer wrapper inside engine */
.sub {
  margin-top: 10px;
}
.sub:first-child { margin-top: 0; }
.sub .sub-head {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brand-orange);
  margin-bottom: 10px;
}


/* ---------- Bottom infrastructure shelves ---------- */
.march-base {
  border-top: 1px solid var(--site-rule);
  background: var(--site-bg-2);
  padding: 28px 28px 32px;
}
.base-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
.base-block {
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--site-rule);
}
.base-block:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}
.base-block .b-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--site-ink-3);
  margin-bottom: 14px;
}
.base-grid {
  display: grid;
  gap: 8px;
}
.base-grid.cols-9 { grid-template-columns: repeat(9, 1fr); }
.base-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }

.infra-tile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 12px;
  background: #fff;
  border: 1px solid var(--site-rule);
  border-radius: 4px;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--site-ink);
  transition: border-color var(--dur-micro);
  min-width: 0;
}
.infra-tile:hover { border-color: var(--site-ink); }
.infra-tile .icon {
  width: 18px; height: 18px;
  border: 1px solid var(--site-rule-strong);
  border-radius: 2px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 8px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--site-ink);
  background: var(--site-bg-2);
}
.infra-tile .name {
  min-width: 0;
  line-height: 1.2;
}

.infra-cols-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
}

/* ---------- Legend / footer of diagram ---------- */
.march-foot {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-top: 1px solid var(--site-rule);
  background: var(--site-bg);
}
.march-foot > div {
  padding: 16px 20px;
  border-left: 1px solid var(--site-rule);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--site-ink-3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.march-foot > div:first-child { border-left: 0; }
.march-foot strong {
  font-weight: 600;
  color: var(--site-ink);
}
.march-foot .swatch {
  width: 10px; height: 10px; border-radius: 2px;
  background: var(--brand-gradient);
  flex-shrink: 0;
}
.march-foot .swatch.ink { background: var(--ink-900); }
.march-foot .swatch.cream {
  background: var(--site-bg-2);
  border: 1px solid var(--site-rule-strong);
}

/* ---------- Caption block under diagram ---------- */
.march-captions {
  margin-top: 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--site-rule-strong);
  border-bottom: 1px solid var(--site-rule-strong);
}
.march-captions > div {
  padding: 24px 20px;
  border-left: 1px solid var(--site-rule);
}
.march-captions > div:first-child { border-left: 0; }
.march-captions .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--site-ink-3);
  margin-bottom: 12px;
}
.march-captions h4 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
}
.march-captions p {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--site-ink-2);
}

/* ---------- Compact variant for home-page teaser ---------- */
.march-stage.compact .march-bar { padding: 12px 16px; }
.march-stage.compact .march-grid {
  grid-template-columns: 180px 1fr 180px;
}
.march-stage.compact .rail { padding: 20px 14px; gap: 20px; }
.march-stage.compact .rail-item {
  font-size: 10px;
  letter-spacing: 0.04em;
  padding: 8px 9px;
}
.march-stage.compact .rail-item .glyph { width: 20px; height: 20px; font-size: 9px; }
.march-stage.compact .rail-item { grid-template-columns: 20px 1fr; }
.march-stage.compact .rail.rail-right .rail-item { grid-template-columns: 1fr 20px; }
.march-stage.compact .platform { padding: 20px; }
.march-stage.compact .layers { gap: 14px; }
.march-stage.compact .layer { padding: 14px; }
.march-stage.compact .l-cells { gap: 8px; }
.march-stage.compact .cell { padding: 9px 11px; font-size: 12px; }
.march-stage.compact .march-base { padding: 20px 20px 24px; }
.march-stage.compact .infra-tile { padding: 10px 10px; font-size: 11px; gap: 8px; }
.march-stage.compact .infra-tile .icon { width: 16px; height: 16px; font-size: 7px; }
.march-stage.compact .march-foot > div { padding: 12px 16px; font-size: 9px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .march-grid {
    grid-template-columns: 1fr;
  }
  .rail {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 24px;
  }
  .rail-group { flex: 1 1 200px; }
  .rail.rail-right .rail-item {
    grid-template-columns: 24px 1fr;
    text-align: left;
  }
  .rail.rail-right .rail-item .glyph { order: 1; }
  .rail.rail-right .rail-item .label { order: 2; }
  .base-grid.cols-9 { grid-template-columns: repeat(3, 1fr); }
  .infra-cols-3 { grid-template-columns: 1fr; gap: 24px; }
  .march-captions { grid-template-columns: 1fr 1fr; }
  .march-captions > div:nth-child(3) { border-left: 0; border-top: 1px solid var(--site-rule); }
  .march-captions > div:nth-child(4) { border-top: 1px solid var(--site-rule); }
}
@media (max-width: 720px) {
  .l-cells { grid-template-columns: 1fr 1fr; }
  .march-foot { grid-template-columns: 1fr; }
  .march-foot > div { border-left: 0; border-top: 1px solid var(--site-rule); }
  .march-foot > div:first-child { border-top: 0; }
  .march-captions { grid-template-columns: 1fr; }
  .march-captions > div { border-left: 0; border-top: 1px solid var(--site-rule); }
  .march-captions > div:first-child { border-top: 0; }
}