/* ============================================
   nslabs — Origin Story
   Split-fault diagnostic layout
   ============================================ */

:root {
  --bg-deep: #07090f;
  --bg-panel: #0d1324;
  --bg-elevated: #121a30;
  --accent: #4f7df5;
  --accent-2: #8b5cf6;
  --danger: #f87171;
  --success: #4ade80;
  --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;
  --shadow-glow: 0 0 0 1px rgba(79, 125, 245, 0.35), 0 8px 28px rgba(79, 125, 245, 0.25);
}

* { 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-origin {
  position: relative;
  padding: 140px 24px 140px;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(900px 500px at 20% 10%, rgba(248, 113, 113, 0.08), transparent 60%),
    radial-gradient(900px 500px at 80% 90%, rgba(79, 125, 245, 0.10), transparent 60%),
    linear-gradient(180deg, #0a0e1a 0%, #07090f 100%);
}

.ns-origin::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% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
}

.ns-container {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

/* ============================================
   HEADER
   ============================================ */
.ns-origin-header {
  text-align: center;
  margin-bottom: 90px;
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
}

.ns-origin-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(--danger);
  padding: 8px 16px;
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: 100px;
  background: rgba(248, 113, 113, 0.08);
  backdrop-filter: blur(10px);
  margin-bottom: 28px;
}

.ns-origin-label::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 12px var(--danger);
  animation: orgPulse 1.4s ease-in-out infinite;
}

@keyframes orgPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.7); }
}

.ns-origin-title {
  font-size: clamp(2rem, 4.8vw, 3.4rem);
  line-height: 1.18;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--text-primary);
}

.ns-origin-title br + * { display: inline; }

/* ============================================
   BODY — Split fault layout
   ============================================ */
.ns-origin-body {
  display: grid;
  grid-template-columns: 1fr 80px 1fr;
  gap: 0;
  align-items: stretch;
  margin-bottom: 100px;
  position: relative;
}

/* Center seam connector */
.ns-origin-body::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 5%;
  bottom: 5%;
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--accent), var(--accent-2), transparent);
  transform: translateX(-50%);
  opacity: 0.5;
  animation: orgSeam 4s ease-in-out infinite;
}

@keyframes orgSeam {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.9; }
}

/* ============================================
   PROBLEM SIDE (Left - "Broken")
   ============================================ */
.ns-origin-problem {
  position: relative;
  padding: 36px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(18, 26, 48, 0.5), rgba(13, 19, 36, 0.3));
  backdrop-filter: blur(20px);
  overflow: hidden;
}

.ns-origin-problem::before {
  content: "BEFORE.STATE";
  position: absolute;
  top: -10px; left: 24px;
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--text-dim);
  background: var(--bg-deep);
  padding: 2px 10px;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 28px;
}

.problem-item {
  position: relative;
  padding: 18px 16px;
  background: rgba(7, 9, 15, 0.7);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-family: "SF Mono", monospace;
  letter-spacing: 0.04em;
  cursor: default;
  transition: all 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
  overflow: hidden;
}

.problem-item::before {
  content: "× ";
  color: var(--danger);
  font-weight: 700;
  margin-right: 6px;
}

.problem-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(248, 113, 113, 0.08), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.problem-item:hover {
  border-color: rgba(248, 113, 113, 0.4);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.problem-item:hover::after { transform: translateX(100%); }

.problem-item:nth-child(5) { grid-column: 1 / -1; }

.problem-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(248, 113, 113, 0.08);
  border: 1px dashed rgba(248, 113, 113, 0.3);
  border-radius: var(--radius-md);
  font-family: "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.problem-connector .accent { color: var(--danger); font-weight: 600; }

/* ============================================
   CENTER FAULT (vertical "FIX" indicator)
   ============================================ */
.ns-origin-fault {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  position: relative;
}

.fault-arrow {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 0 30px var(--accent);
  animation: faultBob 2.6s ease-in-out infinite;
}

@keyframes faultBob {
  0%, 100% { transform: translateY(0); box-shadow: 0 0 30px rgba(79,125,245,0.5); }
  50% { transform: translateY(-6px); box-shadow: 0 0 50px rgba(139,92,246,0.7); }
}

.fault-label {
  font-family: "SF Mono", monospace;
  font-size: 10px;
  letter-spacing: 0.3em;
  color: var(--accent);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  text-transform: uppercase;
}

/* ============================================
   NARRATIVE SIDE (Right - "Fix")
   ============================================ */
.ns-origin-narrative {
  position: relative;
  padding: 36px;
  border: 1px solid rgba(79, 125, 245, 0.25);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(79, 125, 245, 0.08), rgba(139, 92, 246, 0.04));
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  gap: 24px;
  overflow: hidden;
}

.ns-origin-narrative::before {
  content: "AFTER.STATE";
  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;
}

.ns-origin-text {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.ns-origin-insight {
  position: relative;
  padding: 24px 28px;
  background: rgba(7, 9, 15, 0.6);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  font-size: 1.15rem;
  line-height: 1.5;
  color: var(--text-primary);
  font-weight: 500;
  font-style: italic;
  letter-spacing: -0.01em;
  overflow: hidden;
}

.ns-origin-insight::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(400px circle at var(--mx,50%) var(--my,50%), rgba(79,125,245,0.15), transparent 50%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.ns-origin-insight:hover::before { opacity: 1; }

.highlight {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: normal;
  font-weight: 700;
}

/* ============================================
   CLOSING
   ============================================ */
.ns-origin-closing {
  text-align: center;
  padding: 44px 32px;
  background: linear-gradient(135deg, rgba(79, 125, 245, 0.10), rgba(139, 92, 246, 0.06));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  font-size: 1.3rem;
  line-height: 1.55;
  color: var(--text-secondary);
  position: relative;
  overflow: hidden;
}

.ns-origin-closing::before,
.ns-origin-closing::after {
  content: "";
  position: absolute;
  width: 200px; height: 200px;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.ns-origin-closing::before {
  background: rgba(79, 125, 245, 0.25);
  top: -80px; left: -50px;
}
.ns-origin-closing::after {
  background: rgba(139, 92, 246, 0.2);
  bottom: -80px; right: -50px;
}

.ns-origin-closing strong {
  display: block;
  margin-top: 10px;
  font-size: 1.45rem;
  font-weight: 600;
  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;
  position: relative;
  z-index: 1;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 980px) {
  .ns-origin { padding: 100px 20px; }
  .ns-origin-body {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .ns-origin-body::before { display: none; }
  .ns-origin-fault {
    flex-direction: row;
    padding: 8px 0;
  }
  .fault-label {
    writing-mode: horizontal-tb;
    transform: none;
  }
}

@media (max-width: 640px) {
  .ns-origin { padding: 80px 18px; }
  .ns-origin-header { margin-bottom: 56px; }
  .problem-grid { grid-template-columns: 1fr; }
  .problem-item:nth-child(5) { grid-column: auto; }
  .ns-origin-problem,
  .ns-origin-narrative { padding: 28px 22px; }
  .ns-origin-insight { padding: 20px 22px; font-size: 1.05rem; }
  .ns-origin-closing { padding: 32px 22px; font-size: 1.1rem; }
  .ns-origin-closing strong { font-size: 1.2rem; }
}