/* ─────────────────────────────────────────────────────────────────────────────
   Crypto Background Canvas
───────────────────────────────────────────────────────────────────────────── */
#crypto-bg {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
}

/* CSS fallback when WebGL2 is unavailable */
body.no-webgl::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 40% at 15% 60%, rgba(30, 60, 130, 0.22) 0%, transparent 70%),
    radial-gradient(ellipse 50% 35% at 85% 25%, rgba(0, 110, 120, 0.18) 0%, transparent 65%),
    radial-gradient(ellipse 40% 30% at 55% 85%, rgba(20, 90, 80, 0.14) 0%, transparent 60%);
}

/* Ensure page content sits above canvas (non-matrix pages) */
body > header,
body > .page-shell,
body > .matrix-hero,
body > .card,
body > .site-top-nav,
body > .enigma-promo,
body > .signal-lab,
body > .about-portal,
body > .ad-container,
body > .privacy-note,
body > nav,
body > p.footer-contact {
  position: relative;
  z-index: 1;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Signal Lab Section
───────────────────────────────────────────────────────────────────────────── */
.signal-lab,
.visual-crypto-lab,
#visual-crypto-lab {
  width: 100%;
  max-width: 800px;
  margin-top: 64px;
  margin-bottom: 1.75rem;
}

@media (max-width: 768px) {
  .signal-lab,
  .visual-crypto-lab,
  #visual-crypto-lab {
    margin-top: 40px;
  }
}

.signal-lab-header {
  margin-bottom: 1rem;
}

.signal-lab-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
  background: linear-gradient(135deg, #4f8ef7 0%, #3ecf8e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.signal-lab-header p {
  color: var(--text-dim);
  font-size: 0.875rem;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Pipeline Wrapper Card
───────────────────────────────────────────────────────────────────────────── */
.signal-pipeline-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Pipeline Row
───────────────────────────────────────────────────────────────────────────── */
.signal-pipeline {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  padding: 16px 0;
  margin: -16px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.signal-pipeline::-webkit-scrollbar {
  height: 4px;
}

.signal-pipeline::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Signal Node
───────────────────────────────────────────────────────────────────────────── */
.signal-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 0.7rem 0.85rem;
  min-width: 86px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  text-align: center;
  flex-shrink: 0;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

.signal-node-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  white-space: nowrap;
  transition: color 0.3s ease;
}

.signal-node-mapping {
  font-family: var(--font-mono, monospace);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: 0.04em;
  min-height: 1.3em;
  transition: color 0.3s ease;
}

.signal-node-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* Active node */
.signal-node.active {
  border-color: var(--accent);
  background: rgba(79, 142, 247, 0.09);
  box-shadow: 0 0 0 1px rgba(79, 142, 247, 0.2), 0 0 18px rgba(79, 142, 247, 0.22);
}

.signal-node.active .signal-node-label {
  color: var(--accent);
}

.signal-node.active .signal-node-dot {
  background: var(--accent);
  box-shadow: 0 0 6px rgba(79, 142, 247, 0.8);
}

/* Completed node */
.signal-node.complete {
  border-color: rgba(79, 142, 247, 0.35);
  background: rgba(79, 142, 247, 0.04);
}

.signal-node.complete .signal-node-dot {
  background: rgba(79, 142, 247, 0.55);
}

/* Output (final) node */
.signal-node.output {
  border-color: var(--green);
  background: rgba(62, 207, 142, 0.09);
  box-shadow: 0 0 0 1px rgba(62, 207, 142, 0.2), 0 0 20px rgba(62, 207, 142, 0.2);
}

.signal-node.output .signal-node-label {
  color: var(--green);
}

.signal-node.output .signal-node-mapping {
  color: var(--green);
}

.signal-node.output .signal-node-dot {
  background: var(--green);
  box-shadow: 0 0 7px rgba(62, 207, 142, 0.8);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Connector
───────────────────────────────────────────────────────────────────────────── */
.signal-connector {
  width: 40px;
  height: 2px;
  background: var(--border);
  flex-shrink: 0;
  position: relative;
  transition: background 0.35s ease;
  overflow: visible;
}

/* Arrowhead */
.signal-connector::after {
  content: '';
  position: absolute;
  right: -5px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid var(--border);
  border-top: 3px solid transparent;
  border-bottom: 3px solid transparent;
  transition: border-left-color 0.35s ease;
}

.signal-connector.active {
  background: var(--accent);
}

.signal-connector.active::after {
  border-left-color: var(--accent);
}

.signal-connector.complete {
  background: rgba(79, 142, 247, 0.45);
}

.signal-connector.complete::after {
  border-left-color: rgba(79, 142, 247, 0.45);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Pulse Dot
───────────────────────────────────────────────────────────────────────────── */
.signal-pulse {
  position: absolute;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(79, 142, 247, 0.9), 0 0 18px rgba(79, 142, 247, 0.5);
  pointer-events: none;
  display: none;
  z-index: 2;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Demo Controls
───────────────────────────────────────────────────────────────────────────── */
.signal-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.signal-input-letter {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.signal-input-letter label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.signal-letter-display {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: var(--font-mono, monospace);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Educational caption
───────────────────────────────────────────────────────────────────────────── */
.signal-edu-text {
  color: var(--text-dim);
  font-size: 0.85rem;
  line-height: 1.65;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Responsive
───────────────────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .signal-node {
    min-width: 72px;
    padding: 0.6rem 0.65rem;
  }

  .signal-node-label {
    font-size: 0.6rem;
  }

  .signal-node-mapping {
    font-size: 0.82rem;
  }

  .signal-connector {
    width: 26px;
  }

  .signal-pipeline-wrap {
    padding: 1.1rem;
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Reduced motion overrides
───────────────────────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  #crypto-bg {
    display: none;
  }

  .signal-node,
  .signal-connector {
    transition: none;
  }

  .signal-pulse {
    display: none !important;
  }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Visual Cryptography Lab — Unified Two-Column Layout
───────────────────────────────────────────────────────────────────────────── */

/* Outer card wrapper — block, no height constraint */
.viz-pipeline-wrap {
  display: block;
}

/* Hidden panels must truly vanish — author display:grid overrides UA [hidden]{display:none} */
.viz-panel {
  display: none;
}

/* Every active (visible) panel is a 2-column grid: sidebar controls | animation canvas */
.viz-panel:not([hidden]) {
  display: grid;
  width: 100%;
  grid-template-columns: minmax(220px, 280px) 1fr;
  gap: 28px;
  align-items: stretch;
}

/* Left sidebar: controls + educational text stacked vertically */
.viz-aside {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-width: 0;
}

/* ── Shared control block (lives inside .viz-aside) ── */
.viz-controls {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--border);
}

.viz-ctrl-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}

.viz-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.viz-mono {
  font-family: var(--font-mono, monospace);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.viz-formula {
  font-size: 0.82rem;
  color: var(--text-dim);
  font-family: var(--font-mono, monospace);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}

.viz-formula em  { color: var(--accent); font-style: normal; }
.viz-formula strong { color: var(--amber); }
.viz-formula .viz-formula-out { color: var(--green); }

/* ── Buttons ── */
.viz-btn {
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  border: none;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: #fff;
  transition: opacity 0.15s, transform 0.1s;
  white-space: nowrap;
}

.viz-btn:active { transform: scale(0.96); }
.viz-btn:hover  { opacity: 0.88; }

.viz-btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
}

.viz-btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.viz-btn-sm {
  width: 26px;
  height: 26px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: border-color 0.15s;
}

.viz-btn-sm:hover { border-color: var(--accent); color: var(--accent); }

/* Shift/number display */
.viz-stepper {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.viz-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 26px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-family: var(--font-mono, monospace);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0;
}

/* ── Right column: animation canvas ── */
.viz-canvas-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  min-width: 0;
  overflow: hidden;
  background: rgba(11, 13, 21, 0.5);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.viz-canvas-wrap svg,
.viz-canvas-wrap canvas {
  width: 100%;
  height: auto;
  display: block;
  max-width: 100%;
}

/* Keep legacy aliases so any stray references don't break */
.viz-svg-wrap  { display: flex; align-items: center; justify-content: center; }
.viz-svg-center { justify-content: center; }

/* ── Educational text ── */
.viz-edu {
  font-size: 0.83rem;
  color: var(--text-dim);
  line-height: 1.65;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
}

.viz-edu strong { color: var(--text); }
.vc-blue   { color: var(--accent); }
.vc-green  { color: var(--green); }
.vc-amber  { color: var(--amber); }
.vc-red    { color: var(--red); }

/* ── Neon glow keyframes ── */
@keyframes viz-pulse-blue {
  0%, 100% { opacity: 0.6; }
  50%       { opacity: 1.0; }
}

@keyframes viz-pulse-green {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 1.0; }
}

@keyframes viz-pulse-amber {
  0%, 100% { opacity: 0.5; }
  50%       { opacity: 0.95; }
}

@keyframes viz-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

@keyframes viz-node-appear {
  from { opacity: 0; transform: scale(0.4); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes viz-flash {
  0%   { opacity: 1; }
  50%  { opacity: 0.3; }
  100% { opacity: 1; }
}

/* ── Vigenère state display (inside aside) ── */
.viz-vg-state {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.vg-p-letter, .vg-k-letter, .vg-out-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  font-family: var(--font-mono, monospace);
  font-size: 1.5rem;
  font-weight: 700;
  border: 2px solid;
}

.vg-p-letter  { color: var(--accent); border-color: rgba(79,142,247,0.4); background: rgba(79,142,247,0.08); }
.vg-k-letter  { color: var(--amber);  border-color: rgba(247,184,79,0.4); background: rgba(247,184,79,0.08); }
.vg-out-letter { color: var(--green); border-color: rgba(62,207,142,0.4); background: rgba(62,207,142,0.08);
  box-shadow: 0 0 14px rgba(62,207,142,0.3); }

.vg-op { color: var(--text-dim); font-size: 1.1rem; font-weight: 600; }
.vg-formula-small { font-family: var(--font-mono, monospace); font-size: 0.72rem; color: var(--text-dim); white-space: nowrap; }

/* ── Rail Fence — legend ── */
.rf-legend {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.rf-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.rf-legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono, monospace);
}

/* ── Substitution — result word ── */
.subst-result {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.subst-pair {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.subst-pair-in {
  font-family: var(--font-mono, monospace);
  font-size: 0.9rem;
  color: var(--text-dim);
}

.subst-pair-out {
  font-family: var(--font-mono, monospace);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--green);
}

.subst-pair.active .subst-pair-in  { color: var(--accent); }
.subst-pair.active .subst-pair-out {
  color: var(--green);
  text-shadow: 0 0 8px rgba(62,207,142,0.7);
}

/* ── Responsive ── */
@media (max-width: 820px) {
  .viz-panel {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .viz-canvas-wrap {
    min-height: 240px;
    order: -1; /* canvas above controls on mobile */
  }
}

@media (max-width: 480px) {
  .viz-formula { display: none; }
  .vg-p-letter, .vg-k-letter, .vg-out-letter { width: 34px; height: 34px; font-size: 1.1rem; }
}

/* ── Reduced motion overrides for viz ── */
@media (prefers-reduced-motion: reduce) {
  .viz-panel, .viz-canvas-wrap { transition: none !important; }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Homepage top navigation
───────────────────────────────────────────────────────────────────────────── */
.site-top-nav {
  width: 100%;
  max-width: 800px;
  margin: 0 auto 1.25rem;
  position: relative;
  z-index: 2;
}

.site-nav-toggle {
  display: none;
  width: 100%;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(22, 27, 37, 0.92);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.site-nav-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.65rem;
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(17, 24, 39, 0.88);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-nav-panel a {
  color: #9aa4b2;
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.35rem 0.55rem;
  border-radius: 6px;
  transition: color 0.15s, background 0.15s;
}

.site-nav-panel a:hover {
  color: #fff;
  background: rgba(79, 142, 247, 0.12);
}

.site-nav-panel a.site-nav-enigma {
  color: #e8d48a;
  border: 1px solid rgba(201, 162, 39, 0.45);
  background: rgba(201, 162, 39, 0.1);
  box-shadow: 0 0 18px rgba(201, 162, 39, 0.12);
}

.site-nav-panel a.site-nav-enigma:hover {
  color: #fff8e7;
  background: rgba(201, 162, 39, 0.22);
  box-shadow: 0 0 22px rgba(94, 234, 212, 0.15);
}

@media (max-width: 768px) {
  .site-nav-toggle {
    display: block;
  }

  .site-nav-panel {
    display: none;
    flex-direction: column;
    align-items: stretch;
    margin-top: 0.5rem;
    padding: 0.65rem;
  }

  .site-top-nav.is-open .site-nav-panel {
    display: flex;
  }

  .site-nav-panel a {
    text-align: center;
    padding: 0.55rem 0.75rem;
  }
}

.signal-lab-related {
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--text-dim);
}

.signal-lab-related a {
  color: #c9a227;
  text-decoration: none;
}

.signal-lab-related a:hover {
  text-decoration: underline;
  color: #5eead4;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Enigma promo — homepage flagship CTA
───────────────────────────────────────────────────────────────────────────── */
.enigma-promo {
  --enigma-brass: #c9a227;
  --enigma-cyan: #5eead4;
  width: 100%;
  max-width: 800px;
  margin: 2rem auto 0;
  padding: 0;
  position: relative;
  z-index: 1;
}

.enigma-promo-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  align-items: center;
  padding: 1.65rem 1.5rem;
  border-radius: 12px;
  border: 1px solid rgba(61, 74, 95, 0.9);
  background:
    radial-gradient(ellipse 80% 60% at 12% 20%, rgba(201, 162, 39, 0.12), transparent 55%),
    radial-gradient(ellipse 70% 50% at 88% 75%, rgba(94, 234, 212, 0.08), transparent 50%),
    rgba(17, 24, 39, 0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow:
    0 0 0 1px rgba(201, 162, 39, 0.06) inset,
    0 12px 40px rgba(0, 0, 0, 0.35);
  overflow: hidden;
}

.enigma-promo-copy h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.55rem;
  background: linear-gradient(135deg, #e8d48a 0%, var(--enigma-cyan) 55%, #4f8ef7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.enigma-promo-copy p {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1.1rem;
}

.enigma-promo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.enigma-promo-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.15s, box-shadow 0.2s, transform 0.1s;
}

.enigma-promo-actions a:active {
  transform: scale(0.98);
}

.enigma-promo-actions .btn-enigma-primary {
  color: #0d0f14;
  background: linear-gradient(135deg, #e8d48a, var(--enigma-brass));
  border: 1px solid rgba(201, 162, 39, 0.6);
  box-shadow: 0 0 20px rgba(201, 162, 39, 0.25);
}

.enigma-promo-actions .btn-enigma-primary:hover {
  opacity: 0.92;
  box-shadow: 0 0 28px rgba(94, 234, 212, 0.2);
}

.enigma-promo-actions .btn-enigma-secondary {
  color: var(--enigma-cyan);
  background: rgba(94, 234, 212, 0.08);
  border: 1px solid rgba(94, 234, 212, 0.35);
}

.enigma-promo-actions .btn-enigma-secondary:hover {
  background: rgba(94, 234, 212, 0.14);
  color: #fff;
}

.enigma-promo-preview {
  position: relative;
  min-height: 200px;
  border-radius: 10px;
  border: 1px solid rgba(61, 74, 95, 0.65);
  background: rgba(10, 12, 16, 0.65);
  overflow: hidden;
}

.promo-wire-bg {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      118deg,
      transparent,
      transparent 18px,
      rgba(94, 234, 212, 0.04) 18px,
      rgba(94, 234, 212, 0.04) 19px
    );
  opacity: 0.85;
  animation: promo-wire-drift 14s linear infinite;
}

@keyframes promo-wire-drift {
  from { transform: translateX(0); }
  to { transform: translateX(24px); }
}

.promo-rotors {
  position: absolute;
  top: 28%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 14px;
  z-index: 2;
}

.promo-rotor {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid rgba(201, 162, 39, 0.55);
  background: radial-gradient(circle at 35% 30%, #2a3344, #141820);
  box-shadow:
    0 0 16px rgba(201, 162, 39, 0.2),
    inset 0 0 12px rgba(0, 0, 0, 0.5);
  animation: promo-rotor-step 4s ease-in-out infinite;
}

.promo-rotor:nth-child(2) { animation-delay: 0.35s; }
.promo-rotor:nth-child(3) { animation-delay: 0.7s; }

@keyframes promo-rotor-step {
  0%, 88%, 100% { transform: rotate(0deg); }
  92% { transform: rotate(18deg); }
}

.promo-signal-line {
  position: absolute;
  left: 12%;
  right: 12%;
  top: 52%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--enigma-cyan), #e8d48a, transparent);
  opacity: 0.75;
  z-index: 1;
}

.promo-signal-line::after {
  content: '';
  position: absolute;
  top: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--enigma-cyan);
  box-shadow: 0 0 12px var(--enigma-cyan), 0 0 24px rgba(94, 234, 212, 0.5);
  animation: promo-signal-pulse 2.4s ease-in-out infinite;
}

@keyframes promo-signal-pulse {
  0% { left: 0%; opacity: 0.4; }
  50% { opacity: 1; }
  100% { left: calc(100% - 8px); opacity: 0.4; }
}

.promo-lamps {
  position: absolute;
  bottom: 14%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 2;
}

.promo-lamp {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2a3344;
  border: 1px solid rgba(61, 74, 95, 0.9);
}

.promo-lamp.lit {
  background: #f7e6a8;
  border-color: rgba(201, 162, 39, 0.8);
  box-shadow: 0 0 10px rgba(247, 230, 168, 0.85), 0 0 20px rgba(201, 162, 39, 0.45);
  animation: promo-lamp-glow 2.4s ease-in-out infinite;
}

.promo-lamp.lit:nth-child(3) { animation-delay: 0.4s; }
.promo-lamp.lit:nth-child(5) { animation-delay: 0.8s; }
.promo-lamp.lit:nth-child(7) { animation-delay: 1.2s; }

@keyframes promo-lamp-glow {
  0%, 70%, 100% { opacity: 0.35; transform: scale(0.92); }
  78%, 88% { opacity: 1; transform: scale(1.05); }
}

@media (max-width: 768px) {
  .enigma-promo-inner {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 1.35rem 1.15rem;
  }

  .enigma-promo-preview {
    min-height: 170px;
    order: -1;
  }

  .enigma-promo-actions {
    flex-direction: column;
  }

  .enigma-promo-actions a {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .promo-wire-bg,
  .promo-rotor,
  .promo-signal-line::after,
  .promo-lamp.lit {
    animation: none !important;
  }

  .promo-lamp.lit {
    opacity: 1;
  }
}