/* Golander FX — logo watermark climates (designer brief). No particle fields. */

:root {
  --gl-px: 0px;
  --gl-py: 0px;
  --gl-mx: 0;
  --gl-my: 0;
  --paper: #F6F2EB;
  --ink: #141414;
  --mute: #5C5A55;
  --go: #1D4ED8;
  --chrome: #E8E2D6;
  --line: rgba(20, 20, 20, 0.10);
  --go-soft: rgba(29, 78, 216, 0.08);
}

.gl-fx {
  position: relative;
  isolation: isolate;
}

.gl-fx-layer {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  transform: translate3d(var(--gl-px, 0px), var(--gl-py, 0px), 0);
  will-change: transform;
  transition: none;
}

html[data-gl-fx-static="1"] .gl-fx-layer,
html[data-gl-fx-static="1"] .gl-fx-layer--hero {
  transform: none !important;
  will-change: auto;
}

@media (prefers-reduced-motion: reduce) {
  .gl-fx-layer,
  .gl-fx-layer--hero {
    transform: none !important;
    will-change: auto;
  }
}

/* ---------- Hero: paper + soft radial light + slow GO float ---------- */
.gl-fx[data-fx="hero"] {
  background-color: var(--paper);
}

.gl-fx-layer--hero {
  background:
    radial-gradient(ellipse 70% 55% at 50% 32%, rgba(255, 255, 255, 0.72) 0%, rgba(255, 255, 255, 0.28) 38%, transparent 72%),
    radial-gradient(ellipse 55% 40% at 48% 18%, rgba(246, 242, 235, 0.9) 0%, transparent 65%),
    var(--paper);
  /* subtler pointer shift than ambient layers */
  transform: translate3d(calc(var(--gl-px, 0px) * 0.55), calc(var(--gl-py, 0px) * 0.45), 0);
}

.gl-fx-layer--hero::after {
  content: "";
  position: absolute;
  inset-inline-end: -8%;
  top: 8%;
  width: min(720px, 92vw);
  height: min(720px, 92vw);
  background-image: var(--gl-wm-go960);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  opacity: 1;
  transform: translateY(0);
  animation: gl-hero-float 22s ease-in-out infinite alternate;
  will-change: transform;
}

.gl-fx-layer--hero::before {
  content: "";
  position: absolute;
  inset-inline-start: 10%;
  top: 12%;
  width: min(420px, 60vw);
  height: min(280px, 40vw);
  background: radial-gradient(ellipse at center, rgba(255, 255, 255, 0.55) 0%, transparent 70%);
  animation: gl-hero-light 40s ease-in-out infinite alternate;
  will-change: transform, opacity;
}

@keyframes gl-hero-float {
  from { transform: translateY(0); }
  to { transform: translateY(-12px); }
}

@keyframes gl-hero-light {
  from { transform: translate(0, 0); opacity: 0.7; }
  to { transform: translate(18px, 10px); opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .gl-fx-layer--hero::after,
  .gl-fx-layer--hero::before,
  html[data-gl-fx="fx5"] .gl-fx-layer::after,
  .gl-fx-footer-seal {
    animation: none !important;
  }
}

/* ---------- Body variants FX-1…5 (one per page via html[data-gl-fx]) ---------- */

/* Soft paper grain optional under ambient */
.gl-fx[data-fx="ambient"] .gl-fx-layer,
.gl-fx[data-fx="product"] .gl-fx-layer {
  background-color: transparent;
}

/* FX-1 Soft GO watermark field */
html[data-gl-fx="fx1"] .gl-fx[data-fx="ambient"] .gl-fx-layer::after,
html[data-gl-fx="fx1"] .gl-fx[data-fx="product"] .gl-fx-layer::after {
  content: "";
  position: absolute;
  inset-inline-end: -4%;
  bottom: -6%;
  width: min(560px, 78vw);
  height: min(560px, 78vw);
  background-image: var(--gl-wm-go640);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  opacity: 1;
}

/* FX-2 Stack lockup corner seal */
html[data-gl-fx="fx2"] .gl-fx[data-fx="ambient"] .gl-fx-layer::after,
html[data-gl-fx="fx2"] .gl-fx[data-fx="product"] .gl-fx-layer::after {
  content: "";
  position: absolute;
  inset-inline-start: 3%;
  bottom: 4%;
  width: min(220px, 42vw);
  height: min(220px, 42vw);
  background-image: var(--gl-wm-stack);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  opacity: 1;
}

html[data-gl-fx="fx2"] .gl-fx[data-fx="ambient"] .gl-fx-layer::before,
html[data-gl-fx="fx2"] .gl-fx[data-fx="product"] .gl-fx-layer::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

/* FX-3 Side lockup horizon / letterhead */
html[data-gl-fx="fx3"] .gl-fx[data-fx="ambient"] .gl-fx-layer::after,
html[data-gl-fx="fx3"] .gl-fx[data-fx="product"] .gl-fx-layer::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 42%;
  width: min(1100px, 140vw);
  height: min(160px, 28vw);
  transform: translate(-50%, -50%);
  background-image: var(--gl-wm-side);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  opacity: 1;
}

/* FX-4 Dual GO echo */
html[data-gl-fx="fx4"] .gl-fx[data-fx="ambient"] .gl-fx-layer::before,
html[data-gl-fx="fx4"] .gl-fx[data-fx="product"] .gl-fx-layer::before {
  content: "";
  position: absolute;
  inset-inline-end: -10%;
  top: 8%;
  width: min(640px, 85vw);
  height: min(640px, 85vw);
  background-image: var(--gl-wm-go640);
  background-repeat: no-repeat;
  background-size: contain;
  opacity: 0.85;
  transform: translate3d(0, calc(var(--gl-scroll, 0) * -12px), 0);
  will-change: transform;
}

html[data-gl-fx="fx4"] .gl-fx[data-fx="ambient"] .gl-fx-layer::after,
html[data-gl-fx="fx4"] .gl-fx[data-fx="product"] .gl-fx-layer::after {
  content: "";
  position: absolute;
  inset-inline-start: 4%;
  bottom: 10%;
  width: min(280px, 48vw);
  height: min(280px, 48vw);
  background-image: var(--gl-wm-go640);
  background-repeat: no-repeat;
  background-size: contain;
  opacity: 0.55;
  transform: translate3d(0, calc(var(--gl-scroll, 0) * 6px), 0);
  will-change: transform;
}

/* FX-5 Masked GO wash plate */
html[data-gl-fx="fx5"] .gl-fx[data-fx="ambient"] .gl-fx-layer::after,
html[data-gl-fx="fx5"] .gl-fx[data-fx="product"] .gl-fx-layer::after {
  content: "";
  position: absolute;
  inset-inline-end: 6%;
  top: 18%;
  width: min(420px, 70vw);
  height: min(420px, 70vw);
  background: linear-gradient(160deg, #F6F2EB 0%, #E8E2D6 100%);
  -webkit-mask-image: var(--gl-logo-go);
  mask-image: var(--gl-logo-go);
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
  opacity: 0.92;
  animation: gl-mask-pulse 12s ease-in-out infinite alternate;
}

@keyframes gl-mask-pulse {
  from { opacity: 0.85; }
  to { opacity: 1; }
}

/* Footer stack seal (quiet) */
.gl-fx-footer-seal {
  position: absolute;
  inset-inline-start: 50%;
  bottom: 8px;
  width: 120px;
  height: 120px;
  transform: translateX(-50%);
  background-image: var(--gl-wm-stack);
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
  opacity: 0.7;
  pointer-events: none;
}

/* Product page inherits body variant; keep content readable */
.gl-fx--product .gl-fx-layer {
  opacity: 0.9;
}

/* Legacy canvas hidden if present */
.gl-fx-canvas {
  display: none !important;
}

/* Mobile polish (~390px): contain FX overflow; touch-friendly rhythm */
html, body {
  overflow-x: hidden;
  max-width: 100%;
}

@media (max-width: 430px) {
  .gl-fx {
    overflow-x: hidden;
    max-width: 100%;
  }
  .gl-fx-layer {
    max-width: 100%;
  }
}