/* ============================================
   nslabs — Architecture
   3D layered stack + live inspector
   ============================================ */

:root {
  --bg-deep: #07090f;
  --bg-panel: #0d1324;
  --bg-elevated: #121a30;
  --accent: #4f7df5;
  --accent-2: #8b5cf6;
  --text-primary: #e8ecf6;
  --text-secondary: #8a93ad;
  --text-dim: #5b6480;
  --border: rgba(140, 160, 220, 0.10);
  --border-strong: rgba(140, 160, 220, 0.18);
  --radius-md: 12px;
  --radius-lg: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   SECTION
   ============================================ */
.ns-architecture {
  position: relative;
  padding: 140px 24px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(900px 500px at 0% 0%, rgba(79, 125, 245, 0.10), transparent 60%),
    radial-gradient(900px 500px at 100% 100%, rgba(139, 92, 246, 0.10), transparent 60%),
    linear-gradient(180deg, #07090f 0%, #0a0e1a 100%);
}

.ns-architecture::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(140, 160, 220, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 160, 220, 0.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
}

.ns-container {
  max-width: 1320px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* ============================================
   HEADER (right-aligned)
   ============================================ */
.ns-architecture-header {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  margin-bottom: 90px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.ns-architecture-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "SF Mono", "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--accent);
  padding: 8px 16px;
  border: 1px solid rgba(79, 125, 245, 0.3);
  border-radius: 100px;
  background: rgba(79, 125, 245, 0.08);
  margin-bottom: 24px;
}

.ns-architecture-label::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: arPulse 1.6s ease-in-out infinite;
}

@keyframes arPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.ns-architecture-title {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 3.4rem);
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  max-width: 760px;
}

/* ============================================
   STACK + INSPECTOR LAYOUT
   ============================================ */
.architecture-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  perspective: 1600px;
}

/* ============================================
   3D ISOMETRIC STACK (left)
   ============================================ */
.architecture-stack {
  position: relative;
}

.architecture-stack::before {
  content: "STACK.MAP";
  position: absolute;
  top: -28px; left: 0;
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
}

/* The 3D viewport */
.layer-stage {
  position: relative;
  height: 520px;
  transform-style: preserve-3d;
  transform: rotateX(55deg) rotateZ(-30deg);
  transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.layer-stage:hover { transform: rotateX(48deg) rotateZ(-25deg); }

/* Each layer card = a horizontal plate */
.layer-card {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 380px;
  height: 130px;
  margin: -65px 0 0 -190px;
  padding: 22px 26px;
  background: linear-gradient(135deg, rgba(18, 26, 48, 0.95), rgba(13, 19, 36, 0.95));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  cursor: pointer;
  transform-origin: center;
  transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  backdrop-filter: blur(20px);
  box-shadow:
    0 20px 40px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(140, 160, 220, 0.08) inset;
  transform: translateZ(calc((4 - var(--order)) * 70px));
}

/* Connection beam between layers */
.layer-card::before {
  content: "";
  position: absolute;
  left: 30px;
  bottom: -70px;
  width: 1px;
  height: 70px;
  background: linear-gradient(180deg, var(--accent), transparent);
  opacity: 0.4;
}

.layer-card:nth-last-child(1)::before { display: none; }

/* Hover/active state */
.layer-card:hover,
.layer-card.is-active {
  background: linear-gradient(135deg, rgba(79, 125, 245, 0.18), rgba(139, 92, 246, 0.10));
  border-color: rgba(79, 125, 245, 0.45);
  transform: translateZ(calc((4 - var(--order)) * 70px + 30px));
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(79, 125, 245, 0.4),
    0 0 0 1px rgba(79, 125, 245, 0.5) inset;
}

.layer-card:hover::before,
.layer-card.is-active::before { opacity: 1; height: 100px; }

.layer-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 8px;
}

.layer-num {
  font-family: "SF Mono", monospace;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  padding: 3px 8px;
  background: rgba(79, 125, 245, 0.15);
  border: 1px solid rgba(79, 125, 245, 0.3);
  border-radius: 4px;
}

.layer-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.layer-desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* ============================================
   INSPECTOR PANEL (right)
   ============================================ */
.layer-inspector {
  position: relative;
  padding: 32px 32px;
  background: linear-gradient(180deg, rgba(13, 19, 36, 0.7), rgba(7, 9, 15, 0.7));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow: hidden;
}

.layer-inspector::before {
  content: "INSPECTOR.LIVE";
  position: absolute;
  top: -10px; left: 24px;
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--accent);
  background: var(--bg-deep);
  padding: 2px 10px;
}

.inspector-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.inspector-head .live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #4ade80;
}

.inspector-head .live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 10px #4ade80;
  animation: arPulse 1.4s ease-in-out infinite;
}

.inspector-title {
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: opacity 0.3s;
  margin: 0;
}

.inspector-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  transition: opacity 0.3s;
  margin: 0;
}

.inspector-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 8px;
}

.stat-cell {
  padding: 14px 14px;
  background: rgba(7, 9, 15, 0.6);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-cell .k {
  font-family: "SF Mono", monospace;
  font-size: 9px;
  letter-spacing: 0.22em;
  color: var(--text-dim);
}

.stat-cell .v {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

/* Mini pager indicator */
.inspector-pager {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--text-dim);
}

.inspector-pager .dots {
  display: flex; gap: 6px;
}

.inspector-pager .dot {
  width: 18px; height: 3px;
  background: rgba(140, 160, 220, 0.18);
  border-radius: 3px;
  transition: background 0.3s, width 0.3s;
}

.inspector-pager .dot.on {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  width: 28px;
  box-shadow: 0 0 10px rgba(79,125,245,0.4);
}

/* ============================================
   UNIFIED BLOCK
   ============================================ */
.ns-architecture-unified {
  margin-top: 100px;
}

.unified-box {
  position: relative;
  padding: 56px 48px;
  background: linear-gradient(135deg, rgba(79, 125, 245, 0.12), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(79, 125, 245, 0.3);
  border-radius: var(--radius-lg);
  text-align: center;
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.unified-box::before {
  content: "";
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,125,245,0.2), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(60px);
  pointer-events: none;
  animation: arBreath 6s ease-in-out infinite;
}

@keyframes arBreath {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.15); }
}

.unified-box h3 {
  margin: 0 0 16px;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  z-index: 1;
}

.unified-box p {
  margin: 0;
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.highlight {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 600;
}

/* ============================================
   CLOSING
   ============================================ */
.ns-architecture-closing {
  margin-top: 60px;
  padding: 32px 28px;
  text-align: center;
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.ns-architecture-closing strong {
  display: inline-block;
  margin-top: 8px;
  font-size: 1.25rem;
  font-weight: 500;
  font-style: italic;
  background: linear-gradient(120deg, var(--text-primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.01em;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1000px) {
  .ns-architecture { padding: 100px 20px; }
  .architecture-stack { grid-template-columns: 1fr; gap: 80px; }
  .layer-stage {
    transform: rotateX(40deg) rotateZ(-20deg);
    height: 460px;
  }
}

@media (max-width: 640px) {
  .ns-architecture { padding: 80px 18px; }
  .ns-architecture-header { align-items: flex-start; text-align: left; }
  .layer-stage {
    transform: none;
    height: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
  }
  .layer-card {
    position: relative;
    left: auto; top: auto; margin: 0;
    width: 100%; height: auto;
    transform: none !important;
    padding: 18px 20px;
  }
  .layer-card::before { display: none; }
  .layer-card:hover, .layer-card.is-active {
    transform: translateY(-4px) !important;
  }
  .inspector-stats { grid-template-columns: 1fr 1fr; }
  .unified-box { padding: 36px 24px; }
}