/* ═══════════════════════════════════════════════════════
   AURA ONE — theme tokens
   ═══════════════════════════════════════════════════════ */
:root{
  --accent:#7db4ff;
  --accent-soft:rgba(125,180,255,.16);
  --ease:cubic-bezier(.22,1,.36,1);
  --maxw:1240px;
  --pad:clamp(20px,5vw,64px);
}

html[data-theme="dark"]{
  --bg:#08090c;
  --bg-2:#0e1016;
  --fg:#f2f3f6;
  --fg-dim:rgba(242,243,246,.62);
  --fg-faint:rgba(242,243,246,.34);
  --line:rgba(255,255,255,.10);
  --line-strong:rgba(255,255,255,.20);
  --glass:rgba(18,20,26,.55);
  --glass-hi:rgba(255,255,255,.06);
  --btn-fg:#08090c;
  --shadow:0 20px 60px -20px rgba(0,0,0,.9);
  --vignette:radial-gradient(ellipse 90% 70% at 50% 45%,transparent 30%,rgba(0,0,0,.75) 100%);
  color-scheme:dark;
}

html[data-theme="light"]{
  --bg:#f4f4f2;
  --bg-2:#ececea;
  --fg:#0d0e11;
  --fg-dim:rgba(13,14,17,.64);
  --fg-faint:rgba(13,14,17,.38);
  --line:rgba(0,0,0,.10);
  --line-strong:rgba(0,0,0,.22);
  --glass:rgba(255,255,255,.62);
  --glass-hi:rgba(255,255,255,.75);
  --btn-fg:#f7f7f7;
  --shadow:0 18px 50px -22px rgba(0,0,0,.35);
  --vignette:radial-gradient(ellipse 90% 70% at 50% 45%,transparent 35%,rgba(190,190,186,.55) 100%);
  color-scheme:light;
}

/* ── reset ─────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:var(--bg);
  color:var(--fg);
  font-weight:400;
  line-height:1.6;
  letter-spacing:-.011em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .7s var(--ease),color .7s var(--ease);
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--btn-fg)}

/* scrollbar */
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line-strong);border-radius:9px}

/* ═══════════════ Loader ═══════════════ */
.loader{
  position:fixed;inset:0;z-index:200;
  display:grid;place-items:center;
  background:var(--bg);
  transition:opacity .9s var(--ease),visibility .9s;
}
.loader.done{opacity:0;visibility:hidden}
.loader__inner{display:flex;flex-direction:column;align-items:center;gap:18px}
.loader__mark{
  font-size:13px;letter-spacing:.55em;text-indent:.55em;
  font-weight:500;color:var(--fg-dim);
}
.loader__bar{width:170px;height:1px;background:var(--line);overflow:hidden}
.loader__bar span{display:block;height:100%;width:0;background:var(--fg);transition:width .35s var(--ease)}
.loader__pct{font-size:11px;color:var(--fg-faint);font-variant-numeric:tabular-nums}

/* ═══════════════ Stage ═══════════════ */
.stage{position:fixed;inset:0;z-index:0}
#webgl{width:100%;height:100%;display:block}
.stage__vignette{
  position:absolute;inset:0;pointer-events:none;
  background:var(--vignette);
  transition:background .7s var(--ease);
}

/* ═══════════════ Nav ═══════════════ */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px var(--pad);
  transition:background .5s var(--ease),border-color .5s var(--ease),backdrop-filter .5s,padding .5s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:var(--glass);
  backdrop-filter:blur(22px) saturate(160%);
  -webkit-backdrop-filter:blur(22px) saturate(160%);
  border-bottom-color:var(--line);
  padding-top:12px;padding-bottom:12px;
}
.nav__brand{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:600;letter-spacing:.16em;
}
.nav__thin{font-weight:300;color:var(--fg-dim);margin-left:.16em}
.nav__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 14px var(--accent);
  transition:background .6s var(--ease),box-shadow .6s var(--ease);
}
.nav__links{display:flex;gap:34px}
.nav__links a{
  font-size:13px;color:var(--fg-dim);position:relative;padding:4px 0;
  transition:color .3s var(--ease);
}
.nav__links a::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--fg);transition:width .45s var(--ease);
}
.nav__links a:hover{color:var(--fg)}
.nav__links a:hover::after{width:100%}
.nav__actions{display:flex;align-items:center;gap:12px}

.theme-toggle{
  position:relative;
  width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;
  background:var(--glass-hi);border:1px solid var(--line);
  color:var(--fg);
  transition:transform .5s var(--ease),background .3s,border-color .3s;
}
.theme-toggle:hover{transform:rotate(38deg) scale(1.06);border-color:var(--line-strong)}
.theme-toggle svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.5;position:absolute;transition:opacity .35s var(--ease),transform .5s var(--ease)}
html[data-theme="dark"] .icon-sun{opacity:1;transform:scale(1)}
html[data-theme="dark"] .icon-moon{opacity:0;transform:scale(.4) rotate(-90deg)}
html[data-theme="light"] .icon-sun{opacity:0;transform:scale(.4) rotate(90deg)}
html[data-theme="light"] .icon-moon{opacity:1;transform:scale(1)}

/* ═══════════════ Buttons ═══════════════ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:15px 30px;border-radius:100px;
  font-size:14px;font-weight:500;letter-spacing:-.01em;
  background:var(--fg);color:var(--btn-fg);
  border:1px solid transparent;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),background .5s var(--ease),color .5s var(--ease);
  will-change:transform;
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn--sm{padding:9px 20px;font-size:13px}
.btn--ghost{
  background:transparent;color:var(--fg);
  border-color:var(--line-strong);
  backdrop-filter:blur(10px);
}
.btn--ghost:hover{border-color:var(--fg);background:var(--glass-hi)}

/* ═══════════════ Layout ═══════════════ */
main{position:relative;z-index:10}
.panel{
  position:relative;
  min-height:100vh;min-height:100svh;
  display:flex;align-items:center;
  padding:120px var(--pad);
}
.panel--hero{flex-direction:column;justify-content:center;text-align:center}
.copy{max-width:var(--maxw);width:100%;margin:0 auto}
.copy--left  >*{max-width:520px}
.copy--right {display:flex;justify-content:flex-end}
.copy--right >*{max-width:520px}
.copy--center{text-align:center;display:flex;flex-direction:column;align-items:center;gap:0}
.copy--center>*{max-width:640px}

/* ═══════════════ Type ═══════════════ */
.eyebrow{
  font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--fg-faint);margin-bottom:22px;font-weight:500;
}
h1,h2{font-weight:500;letter-spacing:-.035em;line-height:1.02}
.hero__title{font-size:clamp(46px,9vw,116px);margin-bottom:26px}
.hero__title em{
  font-family:'Instrument Serif',Georgia,serif;
  font-style:italic;font-weight:400;letter-spacing:-.02em;
  color:var(--accent);
  transition:color .6s var(--ease);
}
h2{font-size:clamp(32px,5vw,58px);margin-bottom:22px}
h2.huge{font-size:clamp(54px,12vw,150px);letter-spacing:-.05em}
p{color:var(--fg-dim);font-size:clamp(15px,1.35vw,17.5px);font-weight:300}
.hero__sub{max-width:480px;margin:0 auto 40px}
.hero__cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:34px}

/* ═══════════════ Stats / lists ═══════════════ */
.stat-row{list-style:none;display:flex;gap:44px;margin-top:44px;flex-wrap:wrap}
.stat-row b{
  display:block;font-size:38px;font-weight:400;letter-spacing:-.04em;
  line-height:1;color:var(--fg);
}
.stat-row b span{font-size:16px;color:var(--fg-faint);margin-left:2px}
.stat-row small{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--fg-faint);margin-top:9px;display:block}

.feature-list{list-style:none;margin-top:38px;border-top:1px solid var(--line)}
.feature-list li{
  padding:20px 0;border-bottom:1px solid var(--line);
  font-size:14.5px;color:var(--fg-dim);font-weight:300;
  display:flex;flex-direction:column;gap:5px;
  transition:padding-left .45s var(--ease),border-color .45s;
}
.feature-list li:hover{padding-left:14px;border-bottom-color:var(--accent)}
.feature-list b{color:var(--fg);font-weight:500;font-size:15px;letter-spacing:-.01em}

/* ═══════════════ Swatches ═══════════════ */
.swatches{display:flex;gap:16px;justify-content:center;margin-top:44px;flex-wrap:wrap}
.swatch{
  position:relative;width:46px;height:46px;border-radius:50%;
  cursor:pointer;border:1px solid var(--line-strong);
  transition:transform .45s var(--ease),box-shadow .45s var(--ease);
  box-shadow:inset 0 -6px 14px rgba(0,0,0,.45),inset 0 5px 10px rgba(255,255,255,.22);
}
.swatch:hover{transform:scale(1.12)}
.swatch::after{
  content:'';position:absolute;inset:-7px;border-radius:50%;
  border:1px solid var(--fg);
  opacity:0;transform:scale(.82);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.swatch[aria-checked="true"]::after{opacity:1;transform:scale(1)}
.swatch-name{
  margin-top:26px;font-size:12px;letter-spacing:.26em;text-transform:uppercase;
  color:var(--fg-faint);min-height:1.4em;
}

/* ═══════════════ Specs ═══════════════ */
.specs{margin-top:40px;border-top:1px solid var(--line);max-width:560px}
.specs>div{
  display:flex;justify-content:space-between;gap:24px;
  padding:15px 0;border-bottom:1px solid var(--line);
}
.specs dt{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--fg-faint);white-space:nowrap}
.specs dd{font-size:14.5px;color:var(--fg);font-weight:300;text-align:right}

/* ═══════════════ Misc ═══════════════ */
.scroll-hint{
  position:absolute;bottom:38px;left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;gap:12px;
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--fg-faint);
}
.scroll-hint__line{width:1px;height:52px;background:var(--line);overflow:hidden;position:relative}
.scroll-hint__line i{
  position:absolute;top:-52px;left:0;width:1px;height:52px;background:var(--fg);
  animation:trickle 2.4s var(--ease) infinite;
}
@keyframes trickle{0%{top:-52px}60%,100%{top:52px}}

.footer{
  position:relative;z-index:10;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:34px var(--pad);
  border-top:1px solid var(--line);
  font-size:12px;color:var(--fg-faint);
  background:var(--bg);
}
.panel--order{background:linear-gradient(to bottom,transparent,var(--bg) 78%)}

/* ═══════════════ Reveal ═══════════════ */
.reveal{
  opacity:0;transform:translateY(28px);
  transition:opacity 1s var(--ease),transform 1s var(--ease);
}
.reveal.in{opacity:1;transform:none}
.reveal:nth-child(2){transition-delay:.08s}
.reveal:nth-child(3){transition-delay:.16s}
.reveal:nth-child(4){transition-delay:.24s}
.reveal:nth-child(5){transition-delay:.32s}

/* ═══════════════ Responsive ═══════════════ */
@media (max-width:860px){
  .nav__links{display:none}
  .copy--right{justify-content:flex-start}
  .copy--left>*,.copy--right>*{max-width:100%}
  .panel{padding:110px var(--pad) 90px}
  .stat-row{gap:28px}
  .stat-row b{font-size:30px}
  .specs>div{flex-direction:column;gap:4px}
  .specs dd{text-align:left}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}