/* SynapFuse Landing — Dark Matter Theme */

/* -----------------------------------------------------------------------
   Viewport & Z-axis scroll preparation
   perspective on the viewport enables translateZ layering;
   future scroll sections can push/pull layers along the Z axis.
   ----------------------------------------------------------------------- */

.landing-viewport {
  position: sticky;
  top: 0;
  width: 100%;
  height: 100vh;
  background: var(--sf-bg);
  perspective: 1400px;
  perspective-origin: 50% 50%;
  transform-style: preserve-3d;
  overflow: hidden;
}

/* -----------------------------------------------------------------------
   Graph layer — sits behind text on a deeper Z plane
   ----------------------------------------------------------------------- */

.landing-graph-layer {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  transform: translateZ(-80px) scale(1.07);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}

/* -----------------------------------------------------------------------
   Content layer — text floats above the graph
   ----------------------------------------------------------------------- */

.landing-content-layer {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  transform: translateZ(0);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1;
  pointer-events: none;
}

/* -----------------------------------------------------------------------
   Hero text block
   ----------------------------------------------------------------------- */

.landing-hero {
  text-align: center;
  max-width: 720px;
  padding: var(--sf-space-lg);
}

.landing-headline {
  font-family: var(--sf-font-primary);
  font-weight: 300;
  font-size: 48px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--sf-text);
  margin: 0 0 var(--sf-space-lg);
  animation: landing-fade-up 1s var(--sf-ease-out) both;
}

.landing-subtext {
  font-family: var(--sf-font-primary);
  font-weight: 400;
  font-size: var(--sf-text-lg);
  line-height: 1.6;
  color: var(--sf-text-muted);
  margin: 0 0 var(--sf-space-xl);
  animation: landing-fade-up 1s var(--sf-ease-out) 0.15s both;
}

/* -----------------------------------------------------------------------
   CTA — glassmorphic button
   ----------------------------------------------------------------------- */

.landing-cta {
  display: inline-block;
  pointer-events: auto;
  font-family: var(--sf-font-mono);
  font-size: var(--sf-text-sm);
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--sf-alignment);
  padding: 14px 36px;
  border: 1px solid rgba(79, 227, 193, 0.25);
  border-radius: var(--sf-radius-md);
  background: var(--sf-glass-bg);
  backdrop-filter: var(--sf-glass-blur);
  -webkit-backdrop-filter: var(--sf-glass-blur);
  box-shadow: var(--sf-glow-alignment), inset 0 0 30px rgba(79, 227, 193, 0.04);
  transition: box-shadow var(--sf-duration) var(--sf-ease),
              border-color var(--sf-duration) var(--sf-ease),
              background var(--sf-duration) var(--sf-ease);
  animation: landing-fade-up 1s var(--sf-ease-out) 0.3s both;
  cursor: pointer;
}

.landing-cta:hover {
  border-color: rgba(79, 227, 193, 0.5);
  box-shadow: 0 0 32px rgba(79, 227, 193, 0.4), inset 0 0 40px rgba(79, 227, 193, 0.06);
  background: rgba(79, 227, 193, 0.06);
}

/* -----------------------------------------------------------------------
   Hero graph — React Flow overrides
   ----------------------------------------------------------------------- */

.hero-graph-container {
  width: 100%;
  height: 100%;
}

.hero-graph-container .react-flow__renderer {
  cursor: default;
}

/* Remove default React Flow chrome */
.hero-graph-container .react-flow__attribution {
  display: none;
}

.hero-graph-container .react-flow__controls,
.hero-graph-container .react-flow__minimap {
  display: none;
}

/* Node base — override React Flow default rectangle */
.hero-node.react-flow__node-default {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 4px 8px;
  width: auto;
  min-width: 0;
  box-shadow: none;
  font-family: var(--sf-font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

/* Glowing dot above label */
.hero-node.react-flow__node-default::before {
  content: "";
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

/* Hide handles */
.hero-node .react-flow__handle {
  opacity: 0;
  width: 1px;
  height: 1px;
  min-width: 0;
  min-height: 0;
  border: none;
  pointer-events: none;
}

/* Node type colors */
.hero-node--belief.react-flow__node-default { color: var(--sf-node-belief); }
.hero-node--belief.react-flow__node-default::before {
  background: var(--sf-node-belief);
  box-shadow: 0 0 10px var(--sf-node-belief), 0 0 24px rgba(0, 194, 255, 0.25);
}

.hero-node--decision.react-flow__node-default { color: var(--sf-node-decision); }
.hero-node--decision.react-flow__node-default::before {
  background: var(--sf-node-decision);
  box-shadow: 0 0 10px var(--sf-node-decision), 0 0 24px rgba(245, 165, 36, 0.25);
}

.hero-node--target.react-flow__node-default { color: var(--sf-node-target); }
.hero-node--target.react-flow__node-default::before {
  background: var(--sf-node-target);
  box-shadow: 0 0 10px var(--sf-node-target), 0 0 24px rgba(45, 156, 255, 0.25);
}

.hero-node--pattern.react-flow__node-default { color: var(--sf-node-pattern); }
.hero-node--pattern.react-flow__node-default::before {
  background: var(--sf-node-pattern);
  box-shadow: 0 0 10px var(--sf-node-pattern), 0 0 24px rgba(155, 92, 255, 0.25);
}

.hero-node--trajectory.react-flow__node-default { color: var(--sf-node-trajectory); }
.hero-node--trajectory.react-flow__node-default::before {
  background: var(--sf-node-trajectory);
  box-shadow: 0 0 10px var(--sf-node-trajectory), 0 0 24px rgba(34, 227, 164, 0.25);
}

/* Edge glow */
.hero-edge .react-flow__edge-path {
  stroke: rgba(255, 255, 255, 0.06);
  stroke-width: 1.2;
  filter: drop-shadow(0 0 3px rgba(79, 227, 193, 0.15));
}

/* -----------------------------------------------------------------------
   Floating animations — desynchronized per node
   ----------------------------------------------------------------------- */

.hero-float-1 { animation: hero-float-a 6s ease-in-out infinite; }
.hero-float-2 { animation: hero-float-b 7s ease-in-out 1s infinite; }
.hero-float-3 { animation: hero-float-c 8s ease-in-out 2s infinite; }
.hero-float-4 { animation: hero-float-d 9s ease-in-out 0.5s infinite; }
.hero-float-5 { animation: hero-float-e 10s ease-in-out 1.5s infinite; }

@keyframes hero-float-a {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes hero-float-b {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

@keyframes hero-float-c {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

@keyframes hero-float-d {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(7px); }
}

@keyframes hero-float-e {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-9px); }
}

/* -----------------------------------------------------------------------
   Entrance animation
   ----------------------------------------------------------------------- */

@keyframes landing-fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* -----------------------------------------------------------------------
   Glassmorphism panel utility (reusable for future sections)
   ----------------------------------------------------------------------- */

.landing-glass-panel {
  position: relative;
  background: var(--sf-glass-bg);
  border: 1px solid var(--sf-glass-border);
  border-radius: var(--sf-radius-lg);
  backdrop-filter: var(--sf-glass-blur);
  -webkit-backdrop-filter: var(--sf-glass-blur);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

/* Chromatic aberration refraction overlay */
.landing-glass-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(79, 227, 193, 0.02) 0%,
    transparent 40%,
    rgba(106, 140, 255, 0.02) 60%,
    transparent 100%
  );
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.6;
}

/* -----------------------------------------------------------------------
   Z-axis scroll traversal — depth emergence classes
   ----------------------------------------------------------------------- */

.sf-depth-section {
  transform-style: preserve-3d;
  will-change: transform, opacity;
}

.sf-depth-emerge-200 {
  transform: perspective(1400px) translateZ(-200px) scale(0.92);
  opacity: 0;
  transition: transform 0.8s var(--sf-ease-out),
              opacity 0.6s var(--sf-ease-out);
}

.sf-depth-emerge-150 {
  transform: perspective(1400px) translateZ(-150px) scale(0.95);
  opacity: 0;
  transition: transform 0.8s var(--sf-ease-out),
              opacity 0.6s var(--sf-ease-out);
}

.sf-depth-visible {
  transform: perspective(1400px) translateZ(0) scale(1);
  opacity: 1;
}

/* -----------------------------------------------------------------------
   Responsive
   ----------------------------------------------------------------------- */

@media (max-width: 640px) {
  .landing-headline {
    font-size: 32px;
  }
  .landing-subtext {
    font-size: var(--sf-text-md);
  }
  .landing-cta {
    padding: 12px 28px;
    font-size: var(--sf-text-xs);
  }
}