/* =========================================================================
   METISINE — immersive wellness frontend
   Design system: dark cinematic teal, glowing aqua, editorial serif
   ========================================================================= */

:root {
  /* ---- color ---- */
  --bg-abyss:   #05080d;   /* deepest */
  --bg-base:    #070f17;   /* page base */
  --bg-deep:    #0a1622;   /* sections */
  --bg-surface: #0e1d2b;   /* cards */
  --bg-raised:  #13283a;   /* raised cards / hover */
  --line:       rgba(120,180,200,0.14);
  --line-soft:  rgba(120,180,200,0.08);

  --cyan:       #21c3e6;
  --cyan-bright:#5ef0d8;
  --aqua:       #7df5e2;
  --teal-deep:  #0e7c86;
  --amber:      #e7b07a;   /* warm human / B2B accent, used sparingly */

  --text:       #eaf4f6;
  --text-dim:   #9fb8c2;
  --text-faint: #5f7785;

  --glow-cyan:  0 0 0 1px rgba(94,240,216,0.25), 0 0 40px -8px rgba(33,195,230,0.55);

  /* ---- hero shapes (dark) ---- */
  --warm-a: rgba(231,176,122,0.55);
  --warm-b: rgba(232,138,90,0.45);
  --cool-a: rgba(33,195,230,0.45);
  --cool-b: rgba(14,124,134,0.55);
  --blob-op: 0.55;
  --blob-blend: screen;
  --hero-grid-line: rgba(120,180,200,0.07);
  --ring-color: rgba(120,200,215,0.5);
  --ring-op: 0.32;
  --ring-sweep: rgba(94,240,216,0.5);
  --streak-op: 0.5;
  --nav-bg: rgba(5,8,13,0.72);
  --nav-menu-bg: rgba(5,8,13,0.96);
  --card-lift: 0 28px 64px -28px rgba(0,0,0,0.75);
  --card-glare: rgba(94,240,216,0.13);

  /* ---- type ---- */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Hanken Grotesk', system-ui, -apple-system, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, 'SFMono-Regular', monospace;

  /* ---- layout ---- */
  --maxw: 1280px;
  --gutter: clamp(20px, 5vw, 80px);
  --radius: 18px;
  --radius-lg: 28px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* =========================================================================
   LIGHT THEME
   ========================================================================= */
[data-theme="light"] {
  --bg-abyss:   #e6edee;
  --bg-base:    #f5f8f8;
  --bg-deep:    #ecf2f2;
  --bg-surface: #ffffff;
  --bg-raised:  #ffffff;
  --line:       rgba(18,58,72,0.16);
  --line-soft:  rgba(18,58,72,0.09);

  --cyan:       #109fc0;
  --cyan-bright:#0c8b96;   /* readable teal on light */
  --aqua:       #0e7c86;
  --teal-deep:  #0b6670;
  --amber:      #c47a3e;

  --text:       #0c1a22;
  --text-dim:   #41606b;
  --text-faint: #7793a0;

  --glow-cyan:  0 0 0 1px rgba(12,139,150,0.22), 0 0 36px -10px rgba(16,159,192,0.45);

  /* hero shapes (light) — softer, multiply for tint on pale bg */
  --warm-a: rgba(231,150,90,0.40);
  --warm-b: rgba(225,120,70,0.32);
  --cool-a: rgba(16,159,192,0.34);
  --cool-b: rgba(14,124,134,0.34);
  --blob-op: 0.55;
  --blob-blend: multiply;
  --hero-grid-line: rgba(18,58,72,0.06);
  --ring-color: rgba(14,110,124,0.55);
  --ring-op: 0.28;
  --ring-sweep: rgba(16,159,192,0.45);
  --streak-op: 0.4;
  --nav-bg: rgba(245,248,248,0.82);
  --nav-menu-bg: rgba(245,248,248,0.97);
  --card-lift: 0 24px 52px -26px rgba(20,60,75,0.38);
  --card-glare: rgba(16,159,192,0.12);
}

/* glow text reads as a soft halo in dark, near-off in light */
[data-theme="light"] .glow-text { text-shadow: none; }
[data-theme="light"] .grain { opacity: 0.02; mix-blend-mode: multiply; }
[data-theme="light"] .btn-primary { color: #f5fbfb; }
[data-theme="light"] input, [data-theme="light"] textarea { background: rgba(18,58,72,0.03) !important; }

html, body { transition: background-color 0.5s var(--ease-out); }
.nav, .card, .chip, input, textarea, .footer { transition: background-color .45s var(--ease-out), border-color .45s var(--ease-out); }

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
  line-height: 1.5;
}

/* prevent scroll during transition */
body.is-transitioning { overflow: hidden; }

::selection { background: rgba(94,240,216,0.3); color: #fff; }

/* scrollbar */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-abyss); }
::-webkit-scrollbar-thumb { background: #15303f; border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: #1d4055; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
img { display: block; max-width: 100%; }

/* =========================================================================
   TYPOGRAPHY
   ========================================================================= */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--cyan-bright);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: linear-gradient(90deg, var(--cyan-bright), transparent);
}
.eyebrow.center::before { display: none; }

h1, h2, h3 { font-weight: 600; line-height: 1.02; letter-spacing: -0.01em; }

.display {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.015em;
}
.display em { font-style: italic; font-weight: 500; color: var(--cyan-bright); }
.h-hero em, .h-1 em, .mh-1 em { font-style: italic; font-weight: 500; color: var(--cyan-bright); }

.h-hero  { font-family: var(--font-display); font-weight: 500; font-size: clamp(48px, 9vw, 140px); line-height: 0.95; letter-spacing: -0.02em; }
.h-1, .mh-1  { font-family: var(--font-display); font-weight: 500; font-size: clamp(40px, 6vw, 86px); line-height: 1.04; letter-spacing: -0.02em; }
.h-2, .mh-2  { font-family: var(--font-display); font-weight: 500; font-size: clamp(30px, 4vw, 52px); line-height: 1.06; }
.h-3, .mh-3  { font-size: clamp(20px, 2vw, 26px); font-weight: 600; letter-spacing: -0.01em; }
.lead    { font-size: clamp(17px, 1.5vw, 21px); line-height: 1.6; color: var(--text-dim); font-weight: 400; }
.body    { font-size: 16px; line-height: 1.65; color: var(--text-dim); }
.small   { font-size: 13px; color: var(--text-faint); }

.serif-italic { font-family: var(--font-display); font-style: italic; }

/* =========================================================================
   LAYOUT
   ========================================================================= */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); width: 100%; }
.section { padding-block: clamp(80px, 12vh, 160px); position: relative; }
.section.tight { padding-block: clamp(56px, 8vh, 100px); }

.grid { display: grid; gap: clamp(20px, 3vw, 40px); }
.flex { display: flex; }
.between { justify-content: space-between; }
.center { align-items: center; }

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 16px 26px; border-radius: 100px;
  position: relative; overflow: hidden;
  transition: transform .4s var(--ease-out), box-shadow .4s var(--ease-out), border-color .3s var(--ease-out);
  white-space: nowrap;
}
.btn .arrow { transition: transform .4s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--cyan-bright));
  color: #042027;
  font-weight: 700;
  box-shadow: 0 8px 30px -6px rgba(33,195,230,0.5), 0 6px 26px -8px rgba(231,176,122,0.42);
}
.btn-primary:hover { box-shadow: 0 14px 44px -6px rgba(94,240,216,0.6), 0 10px 36px -8px rgba(231,176,122,0.5); transform: translateY(-2px); }

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255,255,255,0.02);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { border-color: var(--cyan-bright); color: var(--cyan-bright); transform: translateY(-2px); }

.btn-text {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--text); display: inline-flex; align-items: center; gap: 8px;
  padding-bottom: 4px; border-bottom: 1px solid var(--line);
  transition: color .3s, border-color .3s;
}
.btn-text:hover { color: var(--cyan-bright); border-color: var(--cyan-bright); }

/* =========================================================================
   CARDS / SURFACES
   ========================================================================= */
.card {
  background: linear-gradient(180deg, var(--bg-surface), var(--bg-deep));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
  transform-style: preserve-3d;
  will-change: transform;
  transition: border-color .5s var(--ease-out), transform .3s var(--ease-out), box-shadow .35s var(--ease-out);
}
.card::before {
  content:""; position:absolute; inset:0; border-radius: inherit;
  background: radial-gradient(360px circle at var(--gx, 50%) var(--gy, 0%), var(--card-glare), transparent 60%);
  opacity: 0; transition: opacity .5s; pointer-events:none;
}
.card:hover { border-color: rgba(94,240,216,0.32); }
.card:hover::before { opacity: 1; }

.chip {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 6px 12px; border-radius: 100px; border: 1px solid var(--line);
  color: var(--text-dim); display: inline-flex; align-items:center; gap:7px;
}
.chip.on { background: rgba(94,240,216,0.12); border-color: rgba(94,240,216,0.4); color: var(--aqua); }
.chip-b2c { color: var(--cyan-bright); border-color: rgba(94,240,216,0.3); }
.chip-b2b { color: var(--amber); border-color: rgba(231,176,122,0.35); }

/* =========================================================================
   IMAGE PLACEHOLDERS
   ========================================================================= */
.ph {
  position: relative; overflow: hidden;
  background:
    repeating-linear-gradient(135deg, rgba(120,180,200,0.05) 0 2px, transparent 2px 11px),
    linear-gradient(160deg, var(--bg-raised), var(--bg-deep));
  border: 1px solid var(--line-soft);
  display: grid; place-items: center;
  color: var(--text-faint);
}
.ph .ph-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 7px 14px; border: 1px dashed rgba(120,180,200,0.3); border-radius: 100px;
  background: rgba(5,8,13,0.4); backdrop-filter: blur(4px);
}

/* =========================================================================
   DECORATIVE: glow orbs, grain, grid
   ========================================================================= */
.orb {
  position: absolute; border-radius: 50%; filter: blur(70px); opacity: 0.5;
  pointer-events: none; z-index: 0;
}
.orb-cyan { background: radial-gradient(circle, rgba(33,195,230,0.6), transparent 70%); }
.orb-aqua { background: radial-gradient(circle, rgba(94,240,216,0.5), transparent 70%); }
.orb-teal { background: radial-gradient(circle, rgba(14,124,134,0.6), transparent 70%); }
.orb-amber { background: radial-gradient(circle, rgba(231,176,122,0.5), transparent 70%); }

.grain {
  position: fixed; inset: 0; z-index: 9998; pointer-events: none; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

.hairline-grid {
  position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: 0.5;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 80px 80px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000, transparent 75%);
}

/* =========================================================================
   SCROLL REVEAL  (animation is driven by JS inline-style tweens — no CSS
   transition here, so a frozen CSS timeline can never hold content hidden)
   ========================================================================= */
.reveal { opacity: 0; transform: translateY(30px); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* =========================================================================
   NAV
   ========================================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--gutter);
  transition: background .5s, padding .5s, border-color .5s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: var(--nav-bg); backdrop-filter: blur(18px) saturate(1.2);
  border-bottom: 1px solid var(--line-soft); padding-block: 14px;
}
.logo { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-size: 26px; font-weight: 600; letter-spacing: 0.02em; }
.logo .mark { width: 30px; height: 30px; position: relative; }
.nav-links { display: flex; gap: 4px; align-items: center; }
.nav-link {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 9px 14px; border-radius: 100px; color: var(--text-dim);
  transition: background .3s; position: relative;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--cyan-bright); }
.nav-cta { margin-left: 8px; }

.nav-links { margin-left: auto; }
.nav-right { display: flex; align-items: center; gap: 10px; margin-left: 16px; }
.theme-toggle {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0;
  border: 1px solid var(--line); color: var(--text-dim);
  display: grid; place-items: center; background: rgba(127,170,190,0.06);
  transition: color .3s, border-color .3s, transform .3s, background .3s;
}
.theme-toggle:hover { color: var(--cyan-bright); border-color: var(--cyan-bright); transform: rotate(18deg); }

.nav-burger { display: none; flex-direction: column; gap: 5px; padding: 10px; }
.nav-burger span { width: 24px; height: 2px; background: var(--text); transition: .3s; }

/* Grouped nav dropdowns (Shop / Learn / Clinics & Distributors / About) */
.nav-group { position: relative; display: inline-flex; }
.nav-trigger {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: none; cursor: pointer; font-weight: inherit; line-height: inherit;
}
.nav-trigger .caret {
  width: 7px; height: 7px; display: inline-block;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg); margin-top: -3px; opacity: 0.6; transition: transform .3s, opacity .3s;
}
.nav-group:hover .nav-trigger .caret,
.nav-group:focus-within .nav-trigger .caret,
.nav-trigger[aria-expanded="true"] .caret { transform: rotate(225deg); margin-top: 2px; opacity: 0.9; }
.nav-dropdown {
  position: absolute; top: 100%; left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px; padding: 8px; z-index: 1001;
  display: flex; flex-direction: column; gap: 2px;
  background: var(--nav-menu-bg, var(--nav-bg)); backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid var(--line-soft); border-radius: 16px;
  box-shadow: 0 20px 44px rgba(0,0,0,0.28);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .22s, transform .22s, visibility .22s;
}
.nav-group:hover .nav-dropdown,
.nav-group:focus-within .nav-dropdown,
.nav-dropdown.open {
  opacity: 1; visibility: visible; pointer-events: auto;
  transform: translateX(-50%) translateY(2px);
}
/* After a leaf is clicked, force the dropdown closed even while the pointer is
   still hovering the group; cleared on mouse-leave / refocus so it reopens. */
.nav-dropdown.suppress { opacity: 0 !important; visibility: hidden !important; pointer-events: none !important; }
.nav-sub {
  display: block; width: 100%; text-align: left; white-space: nowrap;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 9px 12px; border-radius: 10px; color: var(--text-dim);
  background: none; border: none; cursor: pointer; transition: background .25s, color .25s;
}
.nav-sub:hover { color: var(--text); background: rgba(127,170,190,0.10); }
.nav-sub.active { color: var(--cyan-bright); }

@media (max-width: 940px) {
  .nav-links { display: none; }
  .nav-burger { display: flex; }
  .nav-links.open {
    display: flex; flex-direction: column; position: fixed; inset: 0; z-index: 999;
    background: var(--nav-menu-bg); backdrop-filter: blur(20px);
    justify-content: flex-start; align-items: center; gap: 12px;
    padding: 96px 24px 48px; overflow-y: auto;
  }
  .nav-links.open .nav-link { font-size: 18px; }
  .nav-group { display: flex; flex-direction: column; align-items: center; }
  /* Accordion on mobile: dropdowns are hidden until the group is tapped open. */
  .nav-dropdown {
    position: static; transform: none; min-width: 0; z-index: auto;
    background: none; border: none; box-shadow: none; backdrop-filter: none;
    padding: 4px 0 8px; gap: 8px; align-items: center;
    display: none; opacity: 1; visibility: visible; pointer-events: auto;
  }
  .nav-dropdown.open { display: flex; }
  .nav-trigger .caret { width: 6px; height: 6px; }
  .nav-sub { text-align: center; font-size: 14px; }
}

/* =========================================================================
   FOOTER
   ========================================================================= */
.footer { background: var(--bg-abyss); border-top: 1px solid var(--line-soft); position: relative; overflow: hidden; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer-col h4 { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 18px; }
.footer-col a { display: block; padding: 6px 0; color: var(--text-dim); font-size: 14px; transition: color .3s; }
.footer-col a:hover { color: var(--cyan-bright); }
.disclaimer { font-size: 12px; color: var(--text-faint); line-height: 1.7; border-top: 1px solid var(--line-soft); padding-top: 28px; margin-top: 48px; }
.powered-by {
  margin-top: 18px; text-align: center; font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-faint);
}
.powered-link { color: var(--cyan-bright); transition: opacity .25s; }
.powered-link:hover { text-decoration: underline; opacity: 0.8; }
a.social-btn {
  width: 42px; height: 42px; border-radius: 50%; flex-shrink: 0; padding: 0;
  border: 1px solid var(--line); color: var(--text-dim);
  display: inline-flex; align-items: center; justify-content: center; line-height: 0;
  background: rgba(127,170,190,0.05);
  transition: color .3s, border-color .3s, transform .3s, background .3s;
}
a.social-btn svg { display: block; }
a.social-btn:hover { color: var(--cyan-bright); border-color: var(--cyan-bright); transform: translateY(-3px); background: rgba(94,240,216,0.08); }

@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

/* =========================================================================
   PAGE TRANSITION ENGINE
   ========================================================================= */
#transition-layer {
  position: fixed; inset: 0; z-index: 9000; pointer-events: none;
}
.tl-panel { position: absolute; inset: 0; transform: scaleY(0); transform-origin: bottom; }

/* portal */
.tl-portal {
  position: absolute; left: 50%; top: 50%; width: 10px; height: 10px;
  border-radius: 50%; transform: translate(-50%,-50%) scale(0);
  background: radial-gradient(circle, var(--cyan-bright), var(--cyan) 40%, var(--bg-abyss) 72%);
  box-shadow: 0 0 120px 30px rgba(94,240,216,0.5);
}

/* liquid wave */
.tl-liquid { position:absolute; inset:0; transform: translateY(101%); }

/* depth */
.tl-block { position:absolute; inset:0; background: var(--bg-abyss); transform: translateY(100%); }

/* page wrapper for enter/exit anim */
#page { position: relative; z-index: 1; will-change: transform, opacity, filter; }

/* Skip-to-content link: off-screen until keyboard-focused, then slides in as
   the first focusable element so keyboard/screen-reader users can jump past the
   nav straight to the #main-content landmark. Kept focusable (not display:none)
   so it stays in the tab order. */
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 11px 20px;
  border-radius: 12px;
  background: var(--cyan-bright);
  color: #04221d;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 10px 30px -6px rgba(0, 0, 0, 0.45);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-160%);
  transition: transform 0.18s ease, opacity 0.18s ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  outline: 2px solid var(--text);
  outline-offset: 2px;
}
#main-content:focus { outline: none; }

/* loader */
#loader {
  position: fixed; inset: 0; z-index: 99999; background: var(--bg-abyss);
  display: grid; place-items: center; transition: opacity .8s, visibility .8s;
}
#loader.done { opacity: 0; visibility: hidden; }
.loader-ring { width: 80px; height: 80px; position: relative; }
.loader-ring::before, .loader-ring::after {
  content:""; position:absolute; inset:0; border-radius:50%;
  border: 1px solid transparent; border-top-color: var(--cyan-bright);
  animation: spin 1.1s linear infinite;
}
.loader-ring::after { inset: 12px; border-top-color: var(--cyan); animation-duration: 1.6s; animation-direction: reverse; }
@keyframes spin { to { transform: rotate(360deg); } }
.loader-pct { position: absolute; inset: 0; display:grid; place-items:center; font-family: var(--font-mono); font-size: 13px; color: var(--text-dim); }

/* =========================================================================
   HERO BACKGROUND — warm + cool tech light shapes (theme-aware)
   ========================================================================= */
.hero-section {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  overflow: hidden; background: var(--bg-base);
}
.hero-bg { position: absolute; inset: 0; z-index: 1; overflow: hidden; pointer-events: none; }

/* faint tech grid */
.hero-grid2 {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 65% 45%, #000, transparent 78%);
          mask-image: radial-gradient(ellipse 90% 80% at 65% 45%, #000, transparent 78%);
}

/* glowing light blobs */
.hblob {
  position: absolute; border-radius: 50%; filter: blur(72px);
  opacity: var(--blob-op); mix-blend-mode: var(--blob-blend);
  will-change: transform;
}
.hb-warm1 { width: 44vw; height: 44vw; right: 2%;  top: 4%;  background: radial-gradient(circle, var(--warm-a), transparent 66%); animation: floatA 19s ease-in-out infinite; }
.hb-warm2 { width: 30vw; height: 30vw; right: 26%; bottom: 2%; background: radial-gradient(circle, var(--warm-b), transparent 66%); animation: floatB 23s ease-in-out infinite; }
.hb-cool1 { width: 40vw; height: 40vw; right: 14%; top: 26%; background: radial-gradient(circle, var(--cool-a), transparent 66%); animation: floatB 17s ease-in-out infinite; }
.hb-cool2 { width: 26vw; height: 26vw; left: -6%;  bottom: -8%; background: radial-gradient(circle, var(--cool-b), transparent 68%); animation: floatA 21s ease-in-out infinite; }
@keyframes floatA { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(-4%, 5%) scale(1.08); } }
@keyframes floatB { 0%,100% { transform: translate(0,0) scale(1); } 50% { transform: translate(5%, -4%) scale(0.93); } }

/* concentric tech rings (right side, where chamber was) */
.hero-rings {
  position: absolute; right: -6%; top: 50%; width: 58vw; max-width: 820px; aspect-ratio: 1;
  transform: translateY(-50%); color: var(--ring-color); opacity: var(--ring-op);
}
.hero-rings svg { width: 100%; height: 100%; animation: spinSlow 70s linear infinite; }
@keyframes spinSlow { to { transform: rotate(360deg); } }
.hero-ring-sweep {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg, var(--ring-sweep) 30deg, transparent 70deg);
  -webkit-mask: radial-gradient(circle, transparent 30%, #000 31%, #000 49%, transparent 50%);
          mask: radial-gradient(circle, transparent 30%, #000 31%, #000 49%, transparent 50%);
  animation: spinSlow 9s linear infinite; opacity: 0.8;
}

/* diagonal light streaks */
.hero-streak {
  position: absolute; height: 1px; width: 60%; opacity: var(--streak-op);
  background: linear-gradient(90deg, transparent, var(--cyan-bright), transparent);
  filter: blur(0.5px);
}
.hero-streak.s1 { top: 34%; right: 0; transform: rotate(-18deg); transform-origin: right; animation: streak 7s ease-in-out infinite; }
.hero-streak.s2 { top: 64%; right: 8%; width: 42%; transform: rotate(-18deg); transform-origin: right; animation: streak 9s ease-in-out infinite 1.5s; }
@keyframes streak { 0%,100% { opacity: 0; transform: translateX(-30px) rotate(-18deg); } 50% { opacity: var(--streak-op); transform: translateX(0) rotate(-18deg); } }

/* twinkling particles */
.hero-dots { position: absolute; inset: 0; }
.hero-dots span {
  position: absolute; border-radius: 50%; background: var(--cyan-bright);
  box-shadow: 0 0 6px var(--cyan-bright); animation: twinkle ease-in-out infinite;
}
@keyframes twinkle { 0%,100% { opacity: 0.15; } 50% { opacity: 0.9; } }

@media (prefers-reduced-motion: reduce) {
  .hblob, .hero-rings svg, .hero-ring-sweep, .hero-streak, .hero-dots span { animation: none !important; }
}

/* floating bubbles (CSS depth field) */
.bubble-field { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.bubble {
  position: absolute; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,0.5), rgba(94,240,216,0.18) 40%, rgba(33,195,230,0.05) 70%);
  border: 1px solid rgba(255,255,255,0.08);
  animation: rise linear infinite;
}
@keyframes rise {
  0%   { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
  10%  { opacity: 0.8; }
  90%  { opacity: 0.6; }
  100% { transform: translateY(-110vh) translateX(var(--drift, 20px)) scale(0.6); opacity: 0; }
}

/* tilt cards */
.tilt { transform-style: preserve-3d; transition: transform .2s var(--ease-out); will-change: transform; }
.tilt-inner { transform: translateZ(40px); }

/* marquee */
.marquee { overflow: hidden; white-space: nowrap; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee-track { display: inline-flex; gap: 60px; animation: scroll-x 40s linear infinite; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* stat counter */
.stat-num { font-family: var(--font-display); font-size: clamp(44px, 6vw, 84px); line-height: 1; color: var(--text); }

/* utility */
.glow-text { text-shadow: 0 0 30px rgba(94,240,216,0.5); }
.divider { height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); }
.relative { position: relative; }
.z1 { position: relative; z-index: 1; }

/* animations used by JS components */
@keyframes fadeSlide { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes ping { 0% { transform: scale(0.8); opacity: 0.6; } 80%, 100% { transform: scale(2.4); opacity: 0; } }

/* form focus */
input:focus, textarea:focus { border-color: var(--cyan-bright) !important; box-shadow: 0 0 0 3px rgba(94,240,216,0.1); }
input::placeholder, textarea::placeholder { color: var(--text-faint); }

/* responsive: collapse multi-column grids on small screens */
@media (max-width: 900px) {
  .grid[style*="repeat(3"], .grid[style*="repeat(4"] { grid-template-columns: 1fr 1fr !important; }
}

/* hero 3D model carousel: hide on narrow screens, stack text full-width */
@media (max-width: 768px) {
  .hero-model { display: none !important; }
}
@media (max-width: 620px) {
  .grid[style*="repeat(3"], .grid[style*="repeat(4"], .grid[style*="1.05fr"], .grid[style*="1.1fr"], .grid[style*="1.6fr"] { grid-template-columns: 1fr !important; }
}

/* ============================================================
   Aether recommender modal — entrance + step transitions
   ============================================================ */
@keyframes recOverlayIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes recPanelIn {
  from { opacity: 0; transform: translateY(18px) scale(0.965); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes recStepIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
.rec-overlay { animation: recOverlayIn .28s ease both; }
.rec-panel   { animation: recPanelIn .46s cubic-bezier(.16,.84,.44,1) both; }
.rec-step    { animation: recStepIn .36s cubic-bezier(.16,.84,.44,1) both; }
/* Option cards lift on hover/focus for a more tactile feel. Only transform +
   shadow are animated here so the inline border/background states still win. */
.rec-option {
  transition: transform .18s ease, box-shadow .18s ease;
  will-change: transform;
}
.rec-option:hover,
.rec-option:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(0,0,0,0.22);
}
.rec-option:active { transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .rec-overlay, .rec-panel, .rec-step { animation: none; }
  .rec-option { transition: none; }
  .rec-option:hover, .rec-option:focus-visible { transform: none; }
}