/* Circuit 42 — Orchestration Engine */
/* Tone: highly technical, infrastructure-heavy, developer/investor oriented */

/* ── Token overrides — C42 core Circuit identity ── */
:root {
  --accent:        #C10F1D;
  --accent-dark:   #9e0c18;
  --accent-subtle: rgba(193, 15, 29, 0.10);
  --bg: #0c0a08;
  --surface: #121009;
  --surface-2: #181510;
  --surface-3: #1e1b15;
  --border: #252018;
  --border-strong: #302b22;
  --text: #ede9e3;
  --text-muted: #8a8784;
  --text-dim: #524f4d;
}

body {
  background: var(--bg);
  color: var(--text);
}

/* Override header for dark */
.site-header {
  background: rgba(8, 7, 10, 0.96);
  border-bottom-color: var(--border);
}

/* ── Hero ── */

.c42-hero {
  padding: 140px 0 100px;
  position: relative;
  overflow: hidden;
  background: var(--bg);
}

.c42-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 80% at 80% 30%, rgba(193, 15, 29, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 10% 70%, rgba(195, 28, 19, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* Grid overlay */
.c42-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  pointer-events: none;
}

.c42-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.c42-hero .product-badge {
  background: var(--accent-subtle);
  border-color: rgba(193, 15, 29, 0.25);
  color: var(--accent);
}

.c42-hero h1 {
  margin-top: 20px;
  font-size: clamp(2.5rem, 5.5vw, 4.5rem);
  color: var(--text);
}

.c42-hero .hero-sub {
  color: var(--text-muted);
  font-size: var(--text-lg);
  margin-top: 20px;
}

.c42-counter-row {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.c42-counter {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.c42-counter-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
}

.c42-counter-label {
  font-size: var(--text-xs);
  color: var(--text-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Architecture section ── */

.c42-arch {
  padding: 96px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.c42-arch-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 72px;
  align-items: start;
}

.c42-arch-left h2 {
  margin-top: 16px;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}

.c42-arch-left p {
  color: var(--text-muted);
  margin-top: 20px;
  font-size: var(--text-base);
  line-height: 1.7;
}

.c42-feature-list {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.c42-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

.c42-feature-item::before {
  content: '';
  flex-shrink: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 7px;
}

/* Flow diagram */
.c42-flow {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.c42-flow-node {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  transition: border-color 0.15s;
  margin-bottom: 8px;
}

.c42-flow-node:last-child { margin-bottom: 0; }
.c42-flow-node:hover { border-color: var(--border-strong); }

.c42-flow-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.c42-flow-icon--c41 { background: rgba(195,28,19,0.15); color: var(--accent); }
.c42-flow-icon--c42 { background: var(--accent-subtle); color: var(--accent); }
.c42-flow-icon--c43 { background: rgba(50,180,120,0.12); color: #38b880; }
.c42-flow-icon--c44 { background: rgba(220,160,40,0.12); color: #d4a030; }

.c42-flow-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text);
}

.c42-flow-desc {
  font-size: var(--text-xs);
  color: var(--text-dim);
  margin-top: 2px;
}

.c42-flow-connector {
  width: 1px;
  height: 16px;
  background: var(--border);
  margin-left: 36px;
  margin-bottom: 8px;
}

/* ── Technical specs ── */

.c42-specs {
  padding: 96px 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.c42-specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 48px;
}

.c42-spec {
  background: var(--surface);
  padding: 32px 28px;
  transition: background 0.15s;
}

.c42-spec:hover { background: var(--surface-2); }

.c42-spec-label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.c42-spec h4 {
  font-size: var(--text-xl);
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.c42-spec p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Code/API highlight ── */

.c42-code-section {
  padding: 96px 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.c42-code-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 64px;
  align-items: center;
}

.c42-code-content h2 { margin-top: 16px; }

.c42-code-content p {
  color: var(--text-muted);
  margin-top: 16px;
  font-size: var(--text-base);
  line-height: 1.7;
}

.c42-code-block {
  background: #060508;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.c42-code-block-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.c42-code-dots {
  display: flex;
  gap: 5px;
}

.c42-code-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dark-border-strong);
}

.c42-code-block pre {
  padding: 20px 20px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.75;
  color: var(--text-inv-muted);
  overflow-x: auto;
}

.c42-code-block pre .k { color: var(--accent); }
.c42-code-block pre .s { color: #7ec8a0; }
.c42-code-block pre .n { color: var(--text-inv); }
.c42-code-block pre .c { color: var(--text-dim); }
.c42-code-block pre .p { color: #e8c56d; }

/* ── Responsive ── */

@media (max-width: 900px) {
  .c42-arch-grid,
  .c42-code-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .c42-specs-grid { grid-template-columns: 1fr 1fr; }
  .c42-counter-row { gap: 28px; }
}

@media (max-width: 640px) {
  .c42-specs-grid { grid-template-columns: 1fr; }
  .c42-hero { padding: 96px 0 72px; }
}