/* amirwarsanah.com: shared foundation for every page (home, legal pages, 404).
   Redesign 2026-10-15; restyle 2026-10-31 (no pure white or black: the page alternates warm night and light gold
   parchment, each with a soft vignette like the Forgetful Sage video; Koiinon-style edgeless nav; drawn wordmark).
   Brand: black, white and Purdue-inspired gold, color only (Central Plexus Projects/Social-Media.md 1a), here softened
   to warm night #11100D and parchment #E7DCC1 so neither end is pure.
   Gold means stress: it marks the syllable you hit and the place you act. It is never decoration.
   Fonts are self-hosted (CSP font-src 'self'), all SIL Open Font License:
   Gloock (display), Atkinson Hyperlegible Next (text), Charis SIL subset (IPA only). The wordmark is drawn, not set. */

@font-face{font-family:"Gloock";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/gloock-latin-400.woff2) format("woff2")}
@font-face{font-family:"Atkinson Next";font-style:normal;font-weight:200 800;font-display:swap;src:url(/fonts/atkinson-next-latin-wght.woff2) format("woff2")}
@font-face{font-family:"Charis IPA";font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/charis-ipa.woff2) format("woff2")}

:root{
  --night:#11100D; --night-2:#1A1813; --night-3:#24211A;
  --parch:#E7DCC1; --parch-hi:#F2EAD7; --parch-lo:#D2C29E;
  --cream:#EFE7D6; --cream-2:#C3B9A4; --cream-3:#948A75;
  --umber:#1E1A13; --umber-2:#4A4233; --umber-3:#6C634F;
  --gold:#CFB991; --gold-aged:#8E6F3E; --gold-dust:#EBD99F;
  /* Foil: the gold rendered like hot-foil stamping, all stops inside the brand golds. */
  --foil:linear-gradient(104deg,#B39463 0%,#CFB991 18%,#EBDCB4 34%,#F7EFD6 41%,#D9C49A 52%,#CFB991 66%,#BFA270 84%,#D6C297 100%);
  --bg-parch:radial-gradient(ellipse 120% 90% at 50% 38%,#F1E9D5 0%,#E7DCC1 46%,#D3C3A0 100%);
  --bg-night:radial-gradient(ellipse 110% 80% at 50% 0%,#221F18 0%,#14130F 48%,#0D0C0A 100%);
  --display:"Gloock","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --text:"Atkinson Next",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ipa:"Charis IPA","Charis SIL","Doulos SIL","Gentium Plus","Lucida Sans Unicode",serif;
  --gutter:clamp(20px,4.6vw,76px);
  --max:1360px;
  --ease-out:cubic-bezier(.2,.7,.2,1);
}

/* Tones. Every section is one or the other; text colors come from these variables, never fixed. */
body,.tone-parch{--bg:var(--parch);--fg:var(--umber);--fg-2:var(--umber-2);--fg-3:var(--umber-3);--rule:rgba(30,26,19,.16);--field:#F4EDDD;--stroke:rgba(30,26,19,.55);color-scheme:light}
.tone-night,.on-dark{--bg:var(--night);--fg:var(--cream);--fg-2:var(--cream-2);--fg-3:var(--cream-3);--rule:rgba(239,231,214,.16);--field:rgba(239,231,214,.05);--stroke:rgba(239,231,214,.5);color-scheme:dark}
.tone-parch{background:var(--bg-parch);color:var(--fg)}
.tone-night,.on-dark{background:var(--bg-night);color:var(--fg)}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px;background:var(--night)}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg-parch) var(--parch);background-attachment:fixed;color:var(--fg);font:400 1.0625rem/1.6 var(--text);font-kerning:normal;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
@media (min-width:760px){body{font-size:1.125rem}}
img,video,svg{display:block;max-width:100%;height:auto}
::selection{background:var(--gold-dust);color:var(--umber)}
p{margin:0}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--display);font-weight:400;line-height:1.02;letter-spacing:-.012em;margin:0;text-wrap:balance}
.ipa{font-family:var(--ipa);font-weight:400;letter-spacing:0;font-variant-ligatures:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
a,button,label,input,summary{-webkit-tap-highlight-color:transparent}

/* Links (2026-10-31, Amir: no underlines). Links inside text are gold and bold; on hover a soft block lights up
   behind them, the same highlight the nav uses. Block links (cards, buttons, menus) style themselves. */
body,.tone-parch{--link:#77572A;--hl:rgba(142,111,62,.16)}
.tone-night,.on-dark{--link:#DCC79E;--hl:rgba(239,231,214,.1)}
a{color:inherit;text-decoration:none}
:where(p,li,figcaption,td) a:not(.btn){color:var(--link);font-weight:600;border-radius:6px;padding:.06em .2em;margin:0 -.2em;-webkit-box-decoration-break:clone;box-decoration-break:clone;transition:background-color .2s,color .2s}
@media (hover:hover){:where(p,li,figcaption,td) a:not(.btn):hover{background:var(--hl)}}
:focus-visible{outline:3px solid var(--fg);outline-offset:3px;border-radius:2px}
.tone-night :focus-visible,.on-dark :focus-visible{outline-color:var(--gold)}

.skip{position:absolute;left:12px;top:-60px;z-index:60;background:var(--umber);color:var(--cream);padding:10px 16px;border-radius:999px;font-weight:700;text-decoration:none}
.skip:focus{top:12px}

/* Buttons. Primary is foil (the place you act). The glint passes once, on hover or focus. */
.btn{position:relative;isolation:isolate;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;gap:.6em;min-height:52px;padding:0 1.5em;border:0;border-radius:999px;font:700 1.0625rem/1 var(--text);letter-spacing:.005em;text-decoration:none;cursor:pointer;white-space:nowrap;transition:transform .2s var(--ease-out),background .3s,box-shadow .3s,border-color .3s}
.btn:hover{text-decoration:none}
.btn:active{transform:scale(.97);transition-duration:.08s}
.btn-foil{color:var(--umber);background:var(--foil);background-size:180% 100%;background-position:0 0;box-shadow:inset 0 1px 0 rgba(255,255,255,.55),inset 0 -1px 0 rgba(90,66,26,.35);transition:background-position .9s var(--ease-out),transform .2s var(--ease-out)}
.btn-foil::after{content:"";position:absolute;inset:-20% auto -20% -60%;width:42%;z-index:-1;background:linear-gradient(100deg,transparent,rgba(255,255,255,.75),transparent);transform:skewX(-18deg) translateX(0);opacity:0}
@media (hover:hover){.btn-foil:hover{background-position:100% 0}}
.btn-foil:focus-visible{background-position:100% 0}
/* Solid: the tone's own text color as a fill (umber on parchment, cream on night). */
.btn-ink{color:var(--bg);background:var(--fg)}
@media (hover:hover){.btn-ink:hover{background:var(--fg-2)}}
/* Glass (the koiinon.com button): clear, a lit top edge, blur behind. Tinted to the tone under it. */
.btn-glass{color:var(--fg);background:linear-gradient(180deg,var(--glass-hi),var(--glass-lo));border:1px solid var(--glass-edge);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:inset 0 1px 0 var(--glass-top),0 6px 24px rgba(0,0,0,.14)}
body,.tone-parch{--glass-hi:rgba(255,252,243,.55);--glass-lo:rgba(255,252,243,.22);--glass-edge:rgba(30,26,19,.2);--glass-top:rgba(255,255,255,.7)}
.tone-night,.on-dark{--glass-hi:rgba(255,255,255,.13);--glass-lo:rgba(255,255,255,.06);--glass-edge:rgba(255,255,255,.2);--glass-top:rgba(255,255,255,.22)}
@media (hover:hover){.btn-glass:hover{transform:translateY(-1px);border-color:var(--gold);box-shadow:inset 0 1px 0 var(--glass-top),0 8px 30px rgba(0,0,0,.2),0 0 22px rgba(207,185,145,.28)}}
.btn:disabled{opacity:.55;cursor:wait}
@media (prefers-reduced-motion:no-preference){
  .btn-foil:hover::after,.btn-foil:focus-visible::after{animation:glint .9s var(--ease-out) both}
}
@keyframes glint{0%{opacity:0;transform:skewX(-18deg) translateX(0)}20%{opacity:1}100%{opacity:0;transform:skewX(-18deg) translateX(420%)}}

/* Masthead (2026-10-31, after koiinon.com): full width, sticky, no edge at all. The tint and the blur live on
   ::before, reach 28px below the bar and are masked to fade to nothing, so the page slides under it.
   nav.js sets data-tone from whatever section is under the bar, and the bar's colors follow it. */
.masthead{position:sticky;top:0;z-index:50;isolation:isolate;--bar:239,231,214}
.masthead[data-tone=night]{--bg:var(--night);--fg:var(--cream);--fg-2:var(--cream-2);--fg-3:var(--cream-3);--bar:17,16,13;--glass-hi:rgba(255,255,255,.13);--glass-lo:rgba(255,255,255,.06);--glass-edge:rgba(255,255,255,.2);--glass-top:rgba(255,255,255,.22);--rule:rgba(239,231,214,.16)}
.masthead[data-tone=parch]{--bg:var(--parch);--fg:var(--umber);--fg-2:var(--umber-2);--fg-3:var(--umber-3);--bar:236,227,204}
.masthead::before{content:"";position:absolute;inset:0 0 -28px;z-index:-1;pointer-events:none;background:linear-gradient(180deg,rgba(var(--bar),.9) 0%,rgba(var(--bar),.62) 62%,rgba(var(--bar),0) 100%);-webkit-backdrop-filter:blur(12px) saturate(1.15);backdrop-filter:blur(12px) saturate(1.15);-webkit-mask-image:linear-gradient(180deg,#000 55%,transparent);mask-image:linear-gradient(180deg,#000 55%,transparent);transition:background .4s}
.mast-in{position:relative;display:flex;align-items:center;gap:clamp(12px,2.4vw,32px);max-width:calc(var(--max) + 2*var(--gutter));margin:0 auto;padding:14px var(--gutter);color:var(--fg);transition:color .4s}
.brand{display:inline-flex;align-items:center;text-decoration:none;color:inherit;margin-right:auto;padding:4px 0}
.brand:hover{text-decoration:none}
/* Nav links: no underline. A soft rounded block sits behind the link under the pointer and slides from link to
   link (nav.js moves .nav-hl; without JS each link lights its own block). Like tesla.com's nav. */
/* The ul must stay static: the mega panel inside it is positioned against .mast-in (the full bar), and .nav-hl
   uses the links' offsets, which are also measured from .mast-in. */
.masthead nav ul{display:flex;align-items:center;gap:clamp(2px,.6vw,10px);list-style:none;margin:0;padding:0}
.masthead nav a,.mega-trigger{position:relative;z-index:1;text-decoration:none;font:500 1rem/1.6 var(--text);color:inherit;padding:6px 12px;border-radius:8px;display:inline-block;transition:background-color .2s}
.masthead nav .lang{margin-left:clamp(4px,1vw,14px)}
@media (hover:hover){.masthead nav ul:not(.has-hl) a:hover,.masthead nav ul:not(.has-hl) .mega-trigger:hover{background:var(--hl)}}
.masthead nav ul:not(.has-hl) .mega-trigger[aria-expanded="true"]{background:var(--hl)}
.masthead[data-tone=night]{--hl:rgba(239,231,214,.1)}
.masthead[data-tone=parch]{--hl:rgba(30,26,19,.075)}
.nav-hl{position:absolute;z-index:0;top:0;left:0;height:0;border-radius:8px;background:var(--hl);opacity:0;pointer-events:none;transition:transform .28s var(--ease-out),width .28s var(--ease-out),height .28s var(--ease-out),opacity .2s}
.nav-hl.on{opacity:1}
.nav-hl.jump{transition:opacity .2s}
.masthead .btn{min-height:42px;padding:0 1.15em;font-size:.9375rem;font-weight:600}
@media (max-width:820px){.masthead nav{display:none}.masthead nav:has(.lang){display:block}.masthead nav:has(.lang) li:not(.lang){display:none}}
.masthead nav .lang a{display:inline-block;padding:6px 11px;border:1px solid var(--fg-3);border-radius:999px;font-size:.8125rem;font-weight:700;line-height:1;letter-spacing:.04em}
@media (hover:hover){.masthead nav .lang a:hover{border-color:var(--gold);background:var(--hl)}}
@media (max-width:480px){.mast-in{gap:8px;padding:10px 14px}.masthead .btn{min-height:38px;padding:0 .85em;font-size:.875rem}.masthead nav .lang a{padding:6px 9px}}

/* The wordmark: AMIR WARSANAH drawn as thin, wide capitals with open A's (Λ), which is the A of the <A> mark.
   Scrolling folds every letter into the first A, then the box, the brackets and the gold bar arrive (nav.js). */
.wm{height:34px;width:auto;overflow:visible;fill:none;stroke-linecap:square;stroke-linejoin:miter}
.wm-l path{stroke:currentColor;stroke-width:1.5}
.wm-a0 path{transition:stroke .35s}
.wm.is-mark .wm-a0 path{stroke:var(--mark-gold)}
/* The mark is <A/> (2026-10-31): the slash is as tall as the A, so it also reads as an I: "AI". Same geometry as
   favicon.svg. While folding, the first A becomes the mark's A and the I of AMIR tilts into the slash. */
/* 2026-10-31 (Amir, matching the video outro): no box; the brackets take the bar's text colour (ink on parchment,
   cream at night) and the A and slash the gold that reads on that ground; the mark is exactly as tall as the letters. */
.wm{--mark-gold:var(--gold-aged)}
.masthead[data-tone=night] .wm,.foot .wm{--mark-gold:var(--gold)}
.wm-chev{stroke:currentColor;stroke-width:3.4;stroke-linecap:square;stroke-dasharray:1;stroke-dashoffset:1}
.wm-mA,.wm-slash{stroke:var(--mark-gold);stroke-width:5.6;stroke-miterlimit:6;stroke-linecap:butt;transition:stroke .4s}
.wm-mA{opacity:0}
.wm-slash{stroke-dasharray:1;stroke-dashoffset:1}
.wm-bar{fill:var(--mark-gold);stroke:none;transition:fill .4s}
.wm-mark{opacity:1}
.wm-bar{opacity:0}
@media (max-width:480px){.wm{height:26px}.wm-l path{stroke-width:1.9}}
@media (max-width:360px){.wm{height:23px}}

/* Mega menu under "Apps" (nav.js builds it; without JS "Apps" stays a plain link). A card under the bar,
   three columns of links, and a fourth that pictures whichever link is highlighted. */
.mega-trigger{background:none;border:0;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.mega-trigger svg{width:10px;height:10px;transition:transform .2s var(--ease-out)}
.mega-trigger[aria-expanded="true"] svg{transform:rotate(180deg)}
.mega{position:absolute;left:var(--gutter);right:var(--gutter);top:calc(100% - 4px);max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(0,1.25fr);gap:24px;padding:22px;border-radius:26px;color:var(--fg);background:rgba(var(--bar),.86);-webkit-backdrop-filter:blur(22px) saturate(1.4);backdrop-filter:blur(22px) saturate(1.4);box-shadow:0 0 0 1px var(--rule),0 24px 60px -22px rgba(0,0,0,.45);overflow:clip;overflow-clip-margin:14px;opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .16s,transform .16s,visibility 0s .16s}
.masthead:not([data-tone]) .mega,.masthead[data-tone=parch] .mega{--rule:rgba(30,26,19,.14)}
.mega::before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.masthead.mega-open .mega{opacity:1;visibility:visible;transform:none;transition:opacity .2s,transform .28s var(--ease-out),height .3s var(--ease-out)}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){.mega{background:rgba(var(--bar),.98)}}
@media (max-width:820px){.mega{display:none}}
.mega-h{font:700 .875rem/1.2 var(--text);color:var(--fg-3);margin:6px 12px 10px}
.mega .mega-col ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}
.mega .mega-col a{display:block;padding:10px 12px;border-radius:14px;text-decoration:none;transition:background-color .15s}
.mega .mega-col a:hover,.mega .mega-col a.is-on{background:rgba(207,185,145,.26);text-decoration:none}
.mega-name{display:block;font-weight:700;font-size:1rem;line-height:1.3}
.mega-desc{display:block;color:var(--fg-2);font-size:.875rem;line-height:1.4;margin-top:2px}
.mega-visual{margin:0;display:grid;gap:10px;align-content:start}
/* The picture: the whole screenshot, never cropped, standing on a soft blurred copy of itself. */
.mega-pic{position:relative;aspect-ratio:16/11;border-radius:18px;overflow:hidden;background:var(--night-2);isolation:isolate}
.mega-pic .mp-bg{position:absolute;inset:-12%;width:124%;height:124%;max-width:none;object-fit:cover;filter:blur(22px) saturate(1.1) brightness(.8);transform:scale(1.05);transition:opacity .25s}
.mega-pic .mp-fg{position:absolute;inset:8% 0;margin:auto;height:84%;width:auto;max-width:90%;object-fit:contain;border-radius:10px;box-shadow:0 14px 34px -12px rgba(0,0,0,.6),0 0 0 1px rgba(255,255,255,.1);transition:opacity .25s}
.mega-pic.is-wide .mp-fg{inset:0;margin:auto;height:auto;width:88%;max-height:84%}
.mega-pic .mega-card{position:absolute;inset:0;display:grid;place-items:center;padding:22px;color:var(--umber);background:var(--bg-parch);font:400 1.75rem/1.08 var(--display);text-align:center;transition:opacity .25s}
.mega-pic .mega-card svg{position:absolute;right:14px;bottom:10px;width:56px;opacity:.55}
.mega-visual figcaption{font-size:.875rem;line-height:1.4;color:var(--fg-2);padding:0 4px}
.mega-visual figcaption b{color:var(--fg)}
@media (prefers-reduced-motion:reduce){.mega,.masthead.mega-open .mega,.mega-pic img,.mega-pic .mega-card,.wm *{transition:none}}

/* Footer: the deepest night. */
.foot{background:#0B0A08;color:var(--cream-2);margin-top:0;--fg:var(--cream);--fg-2:var(--cream-2);--fg-3:var(--cream-3)}
.foot-in{max-width:calc(var(--max) + 2*var(--gutter));margin:0 auto;padding:clamp(48px,7vw,88px) var(--gutter) 40px;display:grid;gap:28px;font-size:.9375rem;line-height:1.55}
.foot-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px}
.foot .wordmark{color:var(--cream);text-decoration:none;display:inline-block}
.foot .wordmark .wm{height:clamp(30px,3.4vw,44px)}
.foot .wordmark:hover{text-decoration:none}
.foot ul{display:flex;flex-wrap:wrap;gap:8px 28px;list-style:none;margin:0;padding:0}
.foot a{color:var(--cream)}
.foot p{max-width:76ch}
.foot .copy{color:var(--cream-3)}

/* Forms (contact and signup). Same field language everywhere; the field follows the tone. */
.form{display:grid;gap:8px;max-width:520px}
.form label{font-weight:600;font-size:.9375rem;margin-top:10px}
.form input[type=email],.form textarea{width:100%;font:400 1.0625rem/1.45 var(--text);color:var(--fg);background:var(--field);border:1.5px solid var(--stroke);border-radius:12px;padding:12px 14px;min-height:52px;transition:border-color .2s}
.form input[type=email]:focus,.form textarea:focus{border-color:var(--fg)}
.form textarea{resize:vertical;min-height:140px}
.form input:focus-visible,.form textarea:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.form [aria-invalid="true"]{border-color:#B3261E}
.tone-night .form [aria-invalid="true"]{border-color:#F08B7E}
.form .btn{justify-self:start;margin-top:14px}
.form .cf-hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.cf-ts{margin:6px 0 0;min-height:65px}
.cf-status{min-height:1.5em;font-size:1rem;font-weight:600}
.cf-status.err{color:#B3261E}
.tone-night .cf-status.err{color:#F08B7E}
.cf-note{font-size:.9375rem;color:var(--fg-2)}

/* Press feedback on glass buttons (nav.js adds .rip and .flash): gold sheen from the tap, firmer press, ring burst. */
.btn-glass .rip{display:block;position:absolute;border-radius:50%;pointer-events:none;z-index:-1;background:radial-gradient(circle,rgba(207,185,145,.75),rgba(207,185,145,.32) 40%,rgba(207,185,145,0) 70%);transform:scale(.1);opacity:1;animation:rip .75s cubic-bezier(.15,.7,.3,1) forwards}
@keyframes rip{60%{opacity:.7}to{transform:scale(1);opacity:0}}
.btn-glass:active{transform:scale(.93);background:linear-gradient(180deg,rgba(207,185,145,.4),rgba(207,185,145,.24))}
.btn-glass.flash{animation:flash .6s cubic-bezier(.2,.8,.3,1)}
@keyframes flash{0%{transform:scale(.93);border-color:var(--gold);box-shadow:0 0 0 0 rgba(207,185,145,.8),0 0 30px rgba(207,185,145,.6)}40%{transform:scale(1.03)}100%{transform:none;box-shadow:0 0 0 16px rgba(207,185,145,0),0 0 0 rgba(207,185,145,0)}}