/* ============================================================
   DECORATIVE PATTERNS
   Altitude Grid, Cockpit Noise Grain, Contrail Mesh, Green Haze, Transponder Beacon
============================================================ */

/* Altitude Grid — global base layer */
:root {
  --grid-color-light: rgba(0, 42, 58, 0.07);
  --grid-color-dark: rgba(255, 255, 255, 0.05);
  --grid-size: 40px;
  --grid-color: var(--grid-color-light);
}

.page-grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(var(--grid-color) 0.5px, transparent 0.5px),
    linear-gradient(90deg, var(--grid-color) 0.5px, transparent 0.5px);
  background-size: var(--grid-size) var(--grid-size);
  mask-image: linear-gradient(180deg, black 0%, black 30%, transparent 70%);
}

.page-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,157,100,0.06) 0.5px, transparent 0.5px),
    linear-gradient(90deg, rgba(0,157,100,0.06) 0.5px, transparent 0.5px);
  background-size: calc(var(--grid-size) * 5) calc(var(--grid-size) * 5);
}

/* Cockpit Noise Grain — global overlay */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  mix-blend-mode: soft-light;
  opacity: 0.04;
}

/* Contrail Gradient Mesh — hero background */
.contrail-mesh {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}

.contrail-blob {
  position: absolute;
  border-radius: 50%;
  will-change: transform;
}

.contrail-blob--emerald {
  width: 600px;
  height: 400px;
  background: rgba(0,157,100,0.10);
  top: -100px;
  right: -80px;
}

.contrail-blob--ocean {
  width: 500px;
  height: 500px;
  background: rgba(0,42,58,0.24);
  bottom: -120px;
  left: -100px;
}

.contrail-blob--amber {
  width: 300px;
  height: 200px;
  background: rgba(255,193,7,0.09);
  top: 20%;
  left: 40%;
}

@media (min-width: 768px) {
  .contrail-blob {
    filter: blur(100px);
  }

  .contrail-blob--emerald {
    animation: contrail-drift-a 40s ease-in-out infinite alternate;
  }

  .contrail-blob--ocean {
    animation: contrail-drift-b 50s ease-in-out infinite alternate;
  }

  .contrail-blob--amber {
    animation: contrail-drift-c 35s ease-in-out infinite alternate;
  }
}

@media (max-width: 767px) {
  .contrail-blob {
    filter: blur(60px);
    opacity: 0.6;
  }
}

@keyframes contrail-drift-a {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-30px, 20px) scale(1.1); }
}

@keyframes contrail-drift-b {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(40px, -20px) scale(1.05); }
}

@keyframes contrail-drift-c {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(-20px, 10px) scale(1.15); }
}

@media (prefers-reduced-motion: reduce) {
  .contrail-blob {
    animation: none;
  }
}

/* Green Haze — volumetric war-fog drift for hero and CTA sections */
.haze-emerald {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 1;
}

.haze-layer-1,
.haze-layer-2,
.haze-layer-3 {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
}

.haze-layer-1 {
  width: 600px;
  height: 400px;
  left: calc(50% - 300px);
  bottom: -15%;
  background: radial-gradient(ellipse at center, rgba(0, 157, 100, 0.28) 0%, transparent 70%);
  animation: haze-drift-a 14s ease-in-out infinite;
}

.haze-layer-2 {
  width: 450px;
  height: 320px;
  left: calc(50% - 180px);
  bottom: -5%;
  background: radial-gradient(ellipse at center, rgba(0, 157, 100, 0.18) 0%, transparent 70%);
  animation: haze-drift-b 18s ease-in-out infinite;
  animation-delay: -7s;
}

.haze-layer-3 {
  width: 320px;
  height: 240px;
  left: calc(50% - 200px);
  bottom: 5%;
  background: radial-gradient(ellipse at center, rgba(0, 157, 100, 0.12) 0%, transparent 70%);
  animation: haze-drift-c 12s ease-in-out infinite;
  animation-delay: -4s;
}

@keyframes haze-drift-a {
  0%   { transform: translate(0px, 0px)    scale(1.00); opacity: 0.28; }
  25%  { transform: translate(40px, -20px) scale(1.08); opacity: 0.40; }
  50%  { transform: translate(60px, 15px)  scale(1.12); opacity: 0.24; }
  75%  { transform: translate(20px, 40px)  scale(1.05); opacity: 0.36; }
  100% { transform: translate(0px, 0px)    scale(1.00); opacity: 0.28; }
}

@keyframes haze-drift-b {
  0%   { transform: translate(0px, 0px)     scale(1.00); opacity: 0.18; }
  33%  { transform: translate(-50px, 30px)  scale(1.10); opacity: 0.30; }
  66%  { transform: translate(-15px, -35px) scale(0.94); opacity: 0.12; }
  100% { transform: translate(0px, 0px)     scale(1.00); opacity: 0.18; }
}

@keyframes haze-drift-c {
  0%   { transform: translate(0px, 0px)    scale(1.00); opacity: 0.12; }
  40%  { transform: translate(-35px, -20px) scale(1.06); opacity: 0.22; }
  70%  { transform: translate(45px, 30px)  scale(0.96); opacity: 0.08; }
  100% { transform: translate(0px, 0px)    scale(1.00); opacity: 0.12; }
}

@media (prefers-reduced-motion: reduce) {
  .haze-layer-1,
  .haze-layer-2,
  .haze-layer-3 { animation: none; }
}

@media (max-width: 767px) {
  .haze-layer-1 { width: 90%; left: 5%; filter: blur(50px); }
  .haze-layer-2 { width: 70%; left: 15%; filter: blur(50px); }
  .haze-layer-3 { width: 50%; left: 25%; filter: blur(50px); }
}

/* Transponder Beacon Pulse — CTAs */
.beacon {
  position: relative;
  isolation: isolate;
}

.beacon::before,
.beacon::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(0,157,100,0.35);
  pointer-events: none;
  animation: beacon-pulse 3s ease-out infinite;
}

.beacon::after {
  animation-delay: 1.5s;
}

@keyframes beacon-pulse {
  0% {
    width: 0;
    height: 0;
    opacity: 0.7;
  }
  100% {
    width: 200px;
    height: 200px;
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .beacon::before,
  .beacon::after {
    animation: none;
  }
}

/* ============================================================
   Opaque content surfaces — prevent grid bleed-through
   ============================================================ */
main,
section,
.pricing-card,
.sdk-card,
.feature-card,
.trust-visual-card,
.resource-card,
.use-case-card,
.compare-table-wrap,
.faq-section,
.docs-layout,
.playground-container,
.code-block {
  position: relative;
  z-index: 1;
}

/* Cards and panels get fully opaque backgrounds */
.pricing-card,
.sdk-card,
.feature-card,
.trust-visual-card,
.resource-card,
.use-case-card {
  background-color: var(--color-surface) !important;
}

/* Dark-section cards stay opaque with their dark bg */
.hero + section .pricing-card,
[style*="background"] .pricing-card {
  background-color: var(--color-surface) !important;
}