/* ============================================================
   DEMO PAGE — /demo route only
   Does NOT override any global theme styles.
   ============================================================ */

/* Demo hero */
.demo-hero {
  padding: 80px 48px 56px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: relative;
}
.demo-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.demo-hero-inner { max-width: 860px; position: relative; }

.demo-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
}

.demo-headline {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.5vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  color: var(--fg);
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.demo-sub {
  font-size: 17px;
  color: var(--fg-dim);
  line-height: 1.7;
  max-width: 680px;
  margin-bottom: 28px;
}

/* Demo sections */
.demo-section { padding: 72px 48px; }
.demo-section-inner { max-width: 1100px; }

.demo-narrative       { background: var(--bg-alt); }
.demo-pipeline-section { background: var(--bg); }
.demo-code-section    { background: var(--bg-alt); }
.demo-routing-section { background: var(--bg); }

.demo-section-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.demo-section-title {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--fg);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.demo-section-sub {
  font-size: 15px;
  color: var(--fg-dim);
  line-height: 1.7;
  max-width: 620px;
  margin-bottom: 40px;
}

/* Narrative grid */
.narrative-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.narrative-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
}

.narrative-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: 16px;
  line-height: 1;
}

.narrative-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 12px;
  line-height: 1.4;
}

.narrative-body {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.7;
}

/* Pipeline */
.pipeline-wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
  max-width: 640px;
}

.pipeline-step {
  width: 100%;
  padding: 24px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-card);
  position: relative;
}

.step-classical { border-left: 3px solid rgba(0,229,255,0.4); }
.step-quantum   { border-left: 3px solid #00c896; background: rgba(0,200,150,0.04); border-color: rgba(0,200,150,0.3); }

.step-phase-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.15em;
  padding: 3px 8px;
  border-radius: 3px;
  margin-bottom: 12px;
  display: inline-block;
}

.badge-classical { background: rgba(0,229,255,0.1); color: var(--accent); }
.badge-quantum   { background: rgba(0,200,150,0.15); color: #00c896; }

.step-num {
  position: absolute;
  top: 24px;
  right: 24px;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--fg-dim);
  opacity: 0.15;
  line-height: 1;
}

.step-title {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 14px;
  color: var(--fg-dim);
  line-height: 1.65;
  margin-bottom: 12px;
}

.step-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.step-meta-item {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-dim);
  background: rgba(255,255,255,0.04);
  padding: 3px 8px;
  border-radius: 3px;
  border: 1px solid var(--border);
}

.step-meta-sep {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--accent);
}

.pipeline-arrow {
  font-family: var(--font-mono);
  font-size: 24px;
  color: var(--accent);
  opacity: 0.4;
  padding: 8px 28px;
  line-height: 1;
}

/* Result card */
.result-card {
  margin-top: 32px;
  width: 100%;
  max-width: 640px;
  background: rgba(0,229,255,0.06);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  padding: 28px;
}

.result-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--accent-green);
  margin-bottom: 20px;
}

.result-row {
  display: flex;
  gap: 0;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.result-metric {
  flex: 1;
  min-width: 100px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 16px;
}
.result-metric:first-child { padding-left: 0; }

.result-value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.accent-green { color: #00c896 !important; font-size: 22px !important; }

.result-unit {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
}

.result-name {
  font-size: 12px;
  color: var(--fg-dim);
  margin-top: 4px;
}

.result-divider {
  width: 1px;
  height: 56px;
  background: var(--border);
  flex-shrink: 0;
}

.result-note {
  font-size: 13px;
  color: var(--fg-dim);
  line-height: 1.65;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.result-sim-footer {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #f59e0b;
  letter-spacing: 0.06em;
  padding-top: 14px;
  margin-top: 12px;
  border-top: 1px solid rgba(245,158,11,0.2);
  line-height: 1.6;
}

/* Code window */
.code-window {
  background: #080810;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 820px;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: #0a0a14;
}

.code-dots { display: flex; gap: 6px; }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }

.code-filename {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
}

.code-body {
  padding: 28px 32px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: #c8c8e8;
  white-space: pre;
}

/* Syntax highlighting */
.kw  { color: #a070ff; }
.fn  { color: #00e5ff; }
.str { color: #00c896; }
.num { color: #ffb000; }
.cm  { color: #404060; }
.dec { color: #ff8c5a; }

/* Routing diagram */
.routing-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

.routing-diagram-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.routing-svg {
  width: 100%;
  height: auto;
  display: block;
}

.routing-factors {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.factor-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.factor-card-selected {
  border-color: var(--border-accent);
  background: rgba(0,229,255,0.05);
}

.factor-icon {
  font-size: 20px;
  color: var(--fg-dim);
  flex-shrink: 0;
  padding-top: 2px;
  line-height: 1;
}

.factor-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 6px;
}

.factor-desc {
  font-size: 13px;
  color: var(--fg-dim);
  line-height: 1.65;
}

.routing-caption {
  margin-top: 20px;
  font-size: 13px;
  color: var(--fg-dim);
  font-style: italic;
  border-left: 2px solid var(--border-accent);
  padding-left: 16px;
}

/* Demo CTA */
.demo-cta {
  padding: 96px 48px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}

.demo-cta-inner { max-width: 640px; }

.cta-headline {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-sub {
  font-size: 16px;
  color: var(--fg-dim);
  line-height: 1.7;
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 14px 28px;
  background: var(--accent);
  color: #000;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  padding: 14px 28px;
  border: 1px solid var(--border-accent);
  color: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.15s;
}
.btn-secondary:hover { background: var(--accent-dim); }

/* Demo responsive */
@media (max-width: 900px) {
  .narrative-grid { grid-template-columns: 1fr; }
  .routing-layout { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .demo-hero, .demo-section, .demo-cta { padding: 56px 24px; }
  .result-row { flex-direction: column; gap: 20px; }
  .result-divider { display: none; }
  .result-metric { padding: 0; }
  .code-body { font-size: 11px; padding: 20px 16px; }
  .cta-buttons { flex-direction: column; }
  .btn-primary, .btn-secondary { text-align: center; }
}