/* ============================================================================
   AETHERION LABS — Marketing site design system
   Luxury × technical. Deep ink, champagne gold, platinum.
   ----------------------------------------------------------------------------
   Sections:  1. Tokens   2. Reset   3. Type   4. Background   5. Layout
              6. Nav      7. Buttons 8. Eyebrows/headings  9. Cards
              10. Footer  11. Reveal animations  12. Misc components
   ========================================================================== */

/* 1. TOKENS ---------------------------------------------------------------- */
:root {
  /* Ink (backgrounds, darkest → lighter) */
  --ink-0: #050507;
  --ink-1: #08080c;
  --ink-2: #0b0b11;
  --ink-3: #101017;
  --panel: #111119;
  --panel-2: #15151f;
  --panel-3: #1b1b27;

  /* Hairlines */
  --hair: rgba(255,255,255,0.065);
  --hair-2: rgba(255,255,255,0.11);
  --hair-3: rgba(255,255,255,0.18);

  /* Text */
  --t1: #f2f3f7;
  --t2: #b4b6c1;
  --t3: #7c7e8a;
  --t4: #515360;

  /* Gold */
  --gold-100: #f4ead0;
  --gold-200: #e6d09a;
  --gold-300: #cdab68;
  --gold-400: #b4904a;
  --gold-500: #8a6c34;
  --gold-grad: linear-gradient(135deg, #f6eccf 0%, #d9bb7c 38%, #c9a961 58%, #9a7833 100%);
  --gold-grad-soft: linear-gradient(135deg, #e6d09a, #b4904a);
  --gold-glow: rgba(201,169,97,0.30);

  /* Platinum / silver */
  --plat-grad: linear-gradient(180deg, #ffffff 0%, #dadce3 42%, #a7a9b4 78%, #888a96 100%);
  --plat-grad-h: linear-gradient(100deg, #ffffff, #c3c5cf 60%, #9a9ca8);

  /* Data accents */
  --pos: #62d6a2;
  --neg: #f0809a;
  --chart: #58a6ff;
  --chart-soft: rgba(88,166,255,0.08);
  /* Chart palette — blue primary line (data viz, separate from UI gold) */
  --chart-line: #58a6ff;
  --chart-line-soft: rgba(88,166,255,0.08);
  --chart-line-mid: rgba(88,166,255,0.15);
  --chart-line-hover: rgba(88,166,255,0.12);
  --chart-sma50: #f0b429;
  --chart-sma200: rgba(88,166,255,0.65);
  --chart-sma200-soft: rgba(88,166,255,0.03);
  --chart-entry: #f59e0b;
  --chart-buy: #4ade80;
  --chart-buy-border: #166534;
  --chart-sell: #f87171;
  --chart-sell-border: #991b1b;
  --chart-tick: #6b6c78;
  --chart-muted: #a8a9b4;
  --chart-legend: #ecedf2;
  --chart-grid-y: rgba(88,166,255,0.05);
  --chart-grid-x: rgba(255,255,255,0.04);
  --chart-bar: rgba(88,166,255,0.45);
  --chart-bar-sparse: rgba(88,166,255,0.18);

  /* Fonts */
  --serif: "Cormorant", Georgia, "Times New Roman", serif;
  --sans: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Rhythm */
  --container: 1240px;
  --gut: clamp(20px, 4vw, 48px);
  --radius: 16px;
  --radius-sm: 10px;

  /* Easing */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Platform compatibility aliases (legacy token names) */
  --bg-0: var(--ink-0);
  --bg-1: var(--ink-1);
  --bg-2: var(--ink-2);
  --surface-1: var(--panel);
  --surface-2: var(--panel-2);
  --surface-3: var(--panel-3);
  --border-1: var(--hair);
  --border-2: var(--hair-2);
  --border-3: var(--hair-3);
  --text-1: var(--t1);
  --text-2: var(--t2);
  --text-3: var(--t3);
  --text-4: var(--t4);
  --accent: var(--gold-200);
  --accent-dim: rgba(201,169,97,0.07);
  --accent-border: rgba(201,169,97,0.20);
  --ai: var(--gold-300);
  --ai-soft: rgba(201,169,97,0.10);
  --pos-soft: rgba(98,214,162,0.12);
  --neg-soft: rgba(240,128,154,0.12);
  --display: var(--serif);
  --body: var(--sans);
}

/* 2. RESET ----------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--ink-0);
  color: var(--t1);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(201,169,97,0.28); color: #fff; }

/* Scrollbar */
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: var(--ink-0); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.07); border-radius: 10px; border: 3px solid var(--ink-0); }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.13); }

/* 3. TYPE ------------------------------------------------------------------ */
.serif { font-family: var(--serif); }
.mono  { font-family: var(--mono); font-variant-numeric: tabular-nums; }

h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.01em; }

.display {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.015em;
  font-size: clamp(44px, 7vw, 92px);
}
.display .it { font-style: italic; font-weight: 400; }

.h2 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.01em;
  font-size: clamp(34px, 4.6vw, 60px);
}
.h2 .it { font-style: italic; font-weight: 400; }

.h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(24px, 2.6vw, 33px);
  line-height: 1.12;
}

.lead {
  font-size: clamp(17px, 1.55vw, 20px);
  line-height: 1.62;
  color: var(--t2);
  font-weight: 400;
}

/* Gradient text fills */
.gold-text {
  background: var(--gold-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.plat-text {
  background: var(--plat-grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* Eyebrow */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--gold-300);
  font-weight: 500;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px;
  background: linear-gradient(90deg, var(--gold-300), transparent);
}
.eyebrow.center::before { display: none; }
.eyebrow.muted { color: var(--t3); }
.eyebrow.muted::before { background: linear-gradient(90deg, var(--t3), transparent); }

/* 4. BACKGROUND ------------------------------------------------------------ */
.bg-field {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(1100px 720px at 82% -8%, rgba(201,169,97,0.10), transparent 58%),
    radial-gradient(900px 800px at 8% 105%, rgba(157,178,255,0.05), transparent 55%),
    linear-gradient(180deg, #08080d 0%, #060609 45%, #050507 100%);
}
.bg-grid {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(1400px 900px at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(1400px 900px at 50% 0%, #000 0%, transparent 78%);
  opacity: 0.6;
}

/* 5. LAYOUT ---------------------------------------------------------------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gut); }
.container-wide { max-width: 1400px; }
section { position: relative; }
.section-pad { padding-block: clamp(72px, 11vw, 150px); }
.section-pad-sm { padding-block: clamp(54px, 7vw, 96px); }

.grid { display: grid; gap: var(--gut); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }

/* Dotted divider */
.hr-dotted {
  height: 1px; border: 0;
  background-image: linear-gradient(90deg, var(--t4) 0 4px, transparent 4px);
  background-size: 8px 1px; opacity: 0.4;
}
/* Plus crosshair marker */
.plus { position: relative; width: 11px; height: 11px; color: var(--gold-400); flex: 0 0 auto; }
.plus::before, .plus::after { content: ""; position: absolute; background: currentColor; }
.plus::before { left: 50%; top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.plus::after { top: 50%; left: 0; right: 0; height: 1px; transform: translateY(-50%); }

/* 6. NAV ------------------------------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(7,7,11,0.72);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom-color: var(--hair);
}
.nav-inner {
  max-width: 1400px; margin-inline: auto; padding: 0 var(--gut);
  height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 34px; height: 34px; object-fit: contain; filter: drop-shadow(0 2px 8px rgba(201,169,97,0.25)); }
.brand .wm {
  font-family: var(--serif); font-size: 23px; font-weight: 600;
  letter-spacing: 0.06em; line-height: 1;
}
.brand .wm .lab { font-weight: 400; color: var(--t2); }
.nav-links,
.nav[data-layout-v4] .navtabs,
.nav[data-layout-v4] .navtabs-primary,
.nav[data-layout-v4] .nav-tools {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a,
.nav[data-layout-v4] .navtabs a,
.nav[data-layout-v4] .nav-tools a,
.nav[data-layout-v4] a.nav-help {
  position: relative;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 400;
  color: var(--t2);
  padding: 9px 15px;
  border-radius: 8px;
  letter-spacing: 0.01em;
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid transparent;
  background: transparent;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover,
.nav[data-layout-v4] .navtabs a:hover,
.nav[data-layout-v4] .nav-tools a:hover,
.nav[data-layout-v4] a.nav-help:hover {
  color: var(--t1);
  background: rgba(255,255,255,0.035);
}
.nav-links a.active,
.nav[data-layout-v4] .navtabs a.active,
.nav[data-layout-v4] .nav-tools a.active,
.nav[data-layout-v4] a.nav-help.active {
  color: var(--t1);
  background: transparent;
  border-color: transparent;
}
.nav-links a.active::after,
.nav[data-layout-v4] .navtabs a.active::after,
.nav[data-layout-v4] .nav-tools a.active::after,
.nav[data-layout-v4] a.nav-help.active::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 15px;
  bottom: 3px;
  height: 1px;
  background: var(--gold-grad);
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-burger { display: none; }

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 76px 0 0; z-index: 99;
  background: rgba(6,6,10,0.97); backdrop-filter: blur(20px);
  padding: 32px var(--gut); transform: translateY(-12px);
  opacity: 0; pointer-events: none; transition: opacity .3s, transform .3s;
}
.mobile-menu.open { opacity: 1; transform: none; pointer-events: auto; }
.mobile-menu a {
  display: block; font-family: var(--serif); font-size: 30px; font-weight: 500;
  padding: 16px 0; border-bottom: 1px solid var(--hair); color: var(--t1);
}

/* 7. BUTTONS --------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 46px; padding: 0 22px; border-radius: 10px;
  font-family: var(--sans); font-size: 14.5px; font-weight: 500; letter-spacing: 0.01em;
  border: 1px solid transparent; transition: transform .2s var(--ease), background .25s, border-color .25s, box-shadow .25s, color .2s;
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn:active { transform: translateY(1px); }
.btn-gold {
  background: var(--gold-grad); color: #1a1407; font-weight: 600;
  box-shadow: 0 1px 0 rgba(255,255,255,0.35) inset, 0 10px 30px -12px var(--gold-glow);
}
.btn-gold:hover { box-shadow: 0 1px 0 rgba(255,255,255,0.5) inset, 0 14px 38px -10px var(--gold-glow); transform: translateY(-1px); }
.btn-ghost { border-color: var(--hair-2); color: var(--t1); background: rgba(255,255,255,0.015); }
.btn-ghost:hover { border-color: var(--hair-3); background: rgba(255,255,255,0.05); }
.btn-plain { color: var(--t2); padding-inline: 6px; }
.btn-plain:hover { color: var(--t1); }
.btn-lg { height: 54px; padding: 0 28px; font-size: 15.5px; }
.btn-sm { height: 38px; padding: 0 16px; font-size: 13px; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14.5px; color: var(--gold-200); font-weight: 500;
}
.link-arrow svg { width: 15px; height: 15px; transition: transform .25s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* 8. CHIPS / PILLS --------------------------------------------------------- */
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  height: 28px; padding: 0 12px; border-radius: 100px;
  border: 1px solid var(--hair-2); background: rgba(255,255,255,0.02);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; color: var(--t2);
}
.chip.gold { border-color: rgba(201,169,97,0.32); color: var(--gold-200); background: rgba(201,169,97,0.06); }
.chip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--pos); box-shadow: 0 0 0 4px rgba(98,214,162,0.14); }

/* 9. CARDS ----------------------------------------------------------------- */
.card {
  position: relative; border: 1px solid var(--hair);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.022), rgba(255,255,255,0)) ,
    var(--panel);
  border-radius: var(--radius);
}
.card-pad { padding: clamp(22px, 2.4vw, 30px); }
.card-hover { transition: border-color .3s, transform .3s var(--ease), box-shadow .3s; }
.card-hover:hover { border-color: var(--hair-2); transform: translateY(-3px); box-shadow: 0 30px 60px -40px rgba(0,0,0,0.8); }

/* 10. FOOTER --------------------------------------------------------------- */
.footer { border-top: 1px solid var(--hair); margin-top: 40px; position: relative; }
.footer-inner { padding-block: clamp(56px, 7vw, 84px); display: grid; gap: 56px; grid-template-columns: 1.4fr 1fr 1fr 1fr; }
.footer-inner .footer-col:nth-child(2) { grid-column: 3; }
.footer-inner .footer-col:nth-child(3) { grid-column: 4; }
.footer-brand img { width: 46px; margin-bottom: 18px; }
.footer h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--t3); margin: 0 0 18px; font-weight: 500; }
.footer-col a { display: block; color: var(--t2); font-size: 14.5px; padding: 7px 0; transition: color .2s; }
.footer-col a:hover { color: var(--gold-200); }
.footer-bottom { border-top: 1px solid var(--hair); padding-block: 26px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-bottom .fine { font-family: var(--mono); font-size: 11.5px; color: var(--t3); letter-spacing: 0.04em; }

/* 11. REVEAL --------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"] { transition-delay: .08s; }
.reveal[data-d="2"] { transition-delay: .16s; }
.reveal[data-d="3"] { transition-delay: .24s; }
.reveal[data-d="4"] { transition-delay: .32s; }
.reveal[data-d="5"] { transition-delay: .40s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; }
  html { scroll-behavior: auto; }
}

/* 12. MISC ----------------------------------------------------------------- */
/* Stat number */
.stat-n { font-family: var(--serif); font-weight: 500; font-size: clamp(40px, 4.4vw, 60px); line-height: 1; letter-spacing: -0.02em; }
.stat-l { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--t3); margin-top: 12px; }

/* Glow orb decoration */
.orb { position: absolute; border-radius: 50%; filter: blur(60px); pointer-events: none; z-index: 0; }

/* Section heading block */
.sec-head { max-width: 680px; }
.sec-head.center { margin-inline: auto; }
.sec-head .h2 { margin-top: 20px; }
.sec-head .lead { margin-top: 20px; }

/* Browser frame for mockups */
.frame {
  border: 1px solid var(--hair-2); border-radius: 14px; overflow: hidden;
  background: var(--ink-2);
  box-shadow: 0 50px 120px -50px rgba(0,0,0,0.9), 0 0 0 1px rgba(255,255,255,0.02);
}
.frame-bar {
  height: 42px; display: flex; align-items: center; gap: 8px; padding: 0 16px;
  background: linear-gradient(180deg, #14141d, #0e0e15); border-bottom: 1px solid var(--hair);
}
.frame-bar .dot { width: 11px; height: 11px; border-radius: 50%; background: rgba(255,255,255,0.12); }
.frame-bar .addr {
  margin-left: 14px; flex: 1; max-width: 320px; height: 24px; border-radius: 6px;
  background: rgba(255,255,255,0.03); border: 1px solid var(--hair);
  display: flex; align-items: center; padding: 0 12px;
  font-family: var(--mono); font-size: 11px; color: var(--t3); letter-spacing: 0.04em;
}

/* Responsive */
@media (max-width: 980px) {
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px; }
  .footer-inner .footer-col:nth-child(2),
  .footer-inner .footer-col:nth-child(3) { grid-column: auto; }
}
@media (max-width: 820px) {
  .nav-inner { flex-wrap: wrap; height: auto; padding-block: 14px; gap: 12px; }
  .nav-links { flex-wrap: wrap; justify-content: center; }
  .nav-cta { margin-left: auto; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}

/* Newsletter (marketing site) */
.footer-newsletter { grid-column: 1 / -1; text-align: center; padding-bottom: 8px; border-bottom: 1px solid var(--hair); margin-bottom: 8px; }
.footer-nl-label { font-family: var(--serif); font-size: 20px; font-weight: 500; color: var(--t1); margin-bottom: 14px; }
.footer-nl-row { display: flex; gap: 10px; max-width: 440px; margin: 0 auto 10px; }
.footer-nl-input {
  flex: 1; background: rgba(255,255,255,0.03); border: 1px solid var(--hair-2); border-radius: 10px;
  padding: 11px 14px; color: var(--t1); font-family: var(--sans); font-size: 14px; outline: none;
}
.footer-nl-input::placeholder { color: var(--t4); }
.footer-nl-input:focus { border-color: rgba(201,169,97,0.5); }
.footer-nl-btn {
  padding: 11px 20px; background: var(--gold-grad); color: #1a1407; border: none; border-radius: 10px;
  font-family: var(--sans); font-size: 14px; font-weight: 600; cursor: pointer; white-space: nowrap;
}
.footer-nl-note { font-family: var(--mono); font-size: 11.5px; color: var(--t4); }