/* Smooth flowing section transitions — no hard breaks */

.flow-page {
  --flow-violet: #7c3aed;
  --flow-fuchsia: #d946ef;
  --flow-sky: #0ea5e9;
  --flow-deep: #0f0a1e;
}

.flow-section {
  position: relative;
  isolation: isolate;
}

/* Gradient bleed: each section fades into the next */
.flow-section::before,
.flow-section::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: clamp(80px, 12vw, 160px);
  pointer-events: none;
  z-index: 2;
}

.flow-section::before {
  top: 0;
  background: linear-gradient(to bottom, var(--fade-from, transparent), transparent);
}

.flow-section::after {
  bottom: 0;
  background: linear-gradient(to top, var(--fade-to, transparent), transparent);
}

.flow-mesh {
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(124, 58, 237, 0.35), transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(14, 165, 233, 0.25), transparent 55%),
    radial-gradient(ellipse 50% 60% at 60% 80%, rgba(217, 70, 239, 0.2), transparent 50%),
    linear-gradient(165deg, #0f0a1e 0%, #1a1033 35%, #0c1929 70%, #0a1628 100%);
}

.flow-mesh-light {
  background:
    radial-gradient(ellipse 70% 50% at 10% 30%, rgba(167, 139, 250, 0.15), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 60%, rgba(56, 189, 248, 0.12), transparent 50%),
    linear-gradient(180deg, #faf5ff 0%, #f0f9ff 50%, #fdf4ff 100%);
}

/* 3D illustration stack */
.scene-3d {
  perspective: 1200px;
  perspective-origin: 50% 40%;
}
.scene-3d-inner {
  position: relative;
  transform-style: preserve-3d;
  min-height: 320px;
}
.layer-3d {
  position: absolute;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  filter: drop-shadow(0 24px 40px rgba(0, 0, 0, 0.25));
}
.layer-3d.back  { transform: translateZ(-80px) translateX(-20px) scale(0.85); opacity: 0.7; }
.layer-3d.mid   { transform: translateZ(20px) translateY(10px); z-index: 2; }
.layer-3d.front { transform: translateZ(100px) translateX(30px) translateY(-20px) scale(0.55); z-index: 3; }

.scene-3d:hover .layer-3d.back  { transform: translateZ(-60px) translateX(-10px) scale(0.88) rotateY(4deg); }
.scene-3d:hover .layer-3d.mid   { transform: translateZ(40px) translateY(0) rotateY(-3deg); }
.scene-3d:hover .layer-3d.front { transform: translateZ(120px) translateX(20px) translateY(-30px) scale(0.58) rotateY(6deg); }

/* Floating 3D card tiles */
.tile-3d {
  transform-style: preserve-3d;
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.45s ease;
}
.tile-3d:hover {
  transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
  box-shadow: 0 32px 64px -16px rgba(124, 58, 237, 0.35);
}

/* Section nav dots */
.flow-nav {
  position: fixed;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.flow-nav a {
  width: 10px;
  height: 10px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.4);
  transition: all 0.3s ease;
}
.flow-nav a.active,
.flow-nav a:hover {
  background: #fff;
  transform: scale(1.35);
  box-shadow: 0 0 16px rgba(167, 139, 250, 0.8);
}

/* Prism diagonal bridge */
.prism-bridge {
  height: clamp(60px, 8vw, 120px);
  background: linear-gradient(135deg, var(--bridge-from) 49.5%, var(--bridge-to) 50.5%);
}

/* Glass panel */
.glass-panel {
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 1024px) {
  .flow-nav { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .layer-3d, .tile-3d { transition: none; }
}