/* ============================================================
   AIVerID — "Sovereign Trust" Design System
   The visual language of the root of trust for the Ver* ecosystem.
   Document-grade (passport / banknote / certificate) × dev-infra.
   Shared across all pages. Page-specific layout stays inline.
   ============================================================ */

:root{
  /* —— Paper (document base) —— */
  --paper:#F4F1E9;     /* aged document */
  --paper-2:#FBFAF4;   /* raised card */
  --paper-3:#EBE5D6;   /* sunken field / strip */
  /* —— Ink —— */
  --ink:#13202E;       /* deep ink-navy (passport ink) */
  --ink-2:#1A2C3E;     /* ink surface variant */
  --ink-3:#24394D;
  --ink-soft:#4E5E70;  /* secondary text on paper */
  --ink-faint:#838E9B; /* muted / mono labels */
  --line:rgba(19,32,46,.14);
  --line-2:rgba(19,32,46,.07);
  /* —— Gold (the seal) —— */
  --gold:#B08D57;
  --gold-deep:#8A6420;
  --gold-bright:#E6CB8E;
  --gold-grad:linear-gradient(135deg,#E6CB8E 0%,#C9A35E 45%,#9A7634 100%);
  --gold-soft:rgba(176,141,87,.16);
  /* —— Trust green (verified) —— */
  --verify:#2E6E4E;
  --verify-bright:#46A074;
  /* —— On-ink (cream) —— */
  --cream:#F0EADC;
  --cream-soft:rgba(240,234,220,.64);
  --cream-faint:rgba(240,234,220,.40);
  --line-ink:rgba(240,234,220,.14);
  --line-ink-2:rgba(240,234,220,.07);
  /* —— Type —— */
  --display:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Archivo','Helvetica Neue',Arial,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,'SFMono-Regular',Menlo,monospace;
  /* —— Geometry (sharp, document-like — not the soft 16px AI look) —— */
  --r-xs:2px; --r-sm:4px; --r:7px; --r-lg:11px;
  --maxw:1180px;
  --pad:clamp(20px,5vw,40px);
  --ease:cubic-bezier(.2,.72,.2,1);
  --shadow-doc:0 1px 0 rgba(255,255,255,.6) inset,0 18px 50px -28px rgba(19,32,46,.45);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.62;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  position:relative;
}
/* paper grain — subtle, kills the flat-gradient AI look */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  mix-blend-mode:multiply;opacity:.05;
}
body>*{position:relative;z-index:1}

::selection{background:var(--gold);color:var(--ink)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ——————————————————————————————————————— Layout atoms */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--pad);width:100%}
.section{padding-block:clamp(64px,9vw,120px)}
.ink-section{background:var(--ink);color:var(--cream)}
.ink-section h1,.ink-section h2,.ink-section h3{color:var(--cream)}

/* hairline rules */
.rule{height:1px;background:var(--line);border:0}
.ink-section .rule{background:var(--line-ink)}

/* ——————————————————————————————————————— Mono eyebrow / labels */
.eyebrow{
  font-family:var(--mono);font-size:11.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft);
  display:inline-flex;align-items:center;gap:.6em;
}
.eyebrow .idx{color:var(--gold-deep)}
.ink-section .eyebrow{color:var(--cream-soft)}
.mono{font-family:var(--mono)}

/* ——————————————————————————————————————— Headings */
.display{font-family:var(--display);font-optical-sizing:auto;line-height:1.02;letter-spacing:-.018em;font-weight:600}
h1.display{font-size:clamp(40px,6.6vw,82px);font-weight:600}
h2.display{font-size:clamp(30px,4.4vw,54px)}
h3.display{font-size:clamp(22px,2.6vw,30px)}
.serif{font-family:var(--display)}
.italic{font-style:italic}
.gold-ink{color:var(--gold-deep)}
.ink-section .gold-ink{color:var(--gold-bright)}

.lead{font-size:clamp(16px,1.5vw,19px);color:var(--ink-soft);max-width:54ch;line-height:1.66}
.ink-section .lead{color:var(--cream-soft)}

/* ——————————————————————————————————————— Buttons */
.btn{
  --bg:var(--ink);--fg:var(--cream);
  position:relative;display:inline-flex;align-items:center;gap:.6em;
  font-family:var(--sans);font-weight:600;font-size:14.5px;letter-spacing:.005em;
  padding:13px 22px;border:1px solid var(--bg);border-radius:var(--r-sm);
  background:var(--bg);color:var(--fg);cursor:pointer;overflow:hidden;
  transition:color .35s var(--ease),border-color .35s var(--ease),background .35s var(--ease),transform .25s var(--ease);
  white-space:nowrap;
}
.btn .arw{transition:transform .35s var(--ease)}
.btn:hover .arw{transform:translateX(4px)}
.btn::after{content:"";position:absolute;inset:0;z-index:0;background:var(--gold-grad);
  transform:translateX(-101%);transition:transform .42s var(--ease)}
.btn>*{position:relative;z-index:1}
.btn:hover{color:var(--ink)}
.btn:hover::after{transform:translateX(0)}
.btn:active{transform:translateY(1px)}

.btn-ghost{--bg:transparent;--fg:var(--ink);border-color:var(--line)}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink)}
.btn-ghost::after{background:var(--gold-soft)}
.ink-section .btn-ghost{--fg:var(--cream);border-color:var(--line-ink)}
.ink-section .btn-ghost:hover{color:var(--cream);border-color:var(--cream)}
.ink-section .btn-ghost::after{background:rgba(240,234,220,.08)}

.btn-gold{--bg:transparent;--fg:var(--gold-deep);border-color:var(--gold)}
.ink-section .btn-gold{--fg:var(--gold-bright)}
.btn-gold:hover{color:var(--ink)}

.btn-lg{padding:16px 30px;font-size:15.5px}
.link-arw{font-family:var(--mono);font-size:13px;font-weight:500;letter-spacing:.04em;
  color:var(--gold-deep);display:inline-flex;align-items:center;gap:.45em;border-bottom:1px solid transparent;transition:border-color .3s,gap .3s var(--ease)}
.link-arw:hover{border-color:var(--gold);gap:.7em}
.ink-section .link-arw{color:var(--gold-bright)}

/* ——————————————————————————————————————— Status chips / dots */
.chip{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.13em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:.55em;padding:5px 11px;border:1px solid var(--line);border-radius:100px;color:var(--ink-soft)}
.ink-section .chip{border-color:var(--line-ink);color:var(--cream-soft)}
.dot{width:7px;height:7px;border-radius:50%;flex:none;position:relative}
.dot.live{background:var(--verify-bright);box-shadow:0 0 0 0 rgba(70,160,116,.55);animation:beacon 2.4s infinite}
.dot.oauth{background:var(--gold)}
.dot.build{background:transparent;border:1.5px solid var(--ink-faint)}
@keyframes beacon{0%{box-shadow:0 0 0 0 rgba(70,160,116,.5)}70%{box-shadow:0 0 0 7px rgba(70,160,116,0)}100%{box-shadow:0 0 0 0 rgba(70,160,116,0)}}

/* ——————————————————————————————————————— Navigation */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(244,241,233,.72);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);
  border-bottom:1px solid transparent;transition:border-color .4s,background .4s,box-shadow .4s}
.nav.scrolled{border-bottom-color:var(--line);background:rgba(244,241,233,.9);box-shadow:0 8px 30px -24px rgba(19,32,46,.5)}
.nav-in{max-width:var(--maxw);margin:0 auto;padding:13px var(--pad);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px}
.brand img{width:34px;height:34px}
.brand-name{font-family:var(--display);font-weight:600;font-size:19px;letter-spacing:.005em}
.brand-name sup{font-size:.5em;color:var(--gold-deep);font-family:var(--mono);top:-1.1em}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-family:var(--mono);font-size:12.5px;letter-spacing:.07em;color:var(--ink-soft);text-transform:uppercase;transition:color .25s;position:relative}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-5px;width:0;height:1px;background:var(--gold);transition:width .3s var(--ease)}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-signin{font-family:var(--sans);font-weight:600;font-size:14px;color:var(--ink);transition:color .25s}
.nav-signin:hover{color:var(--gold-deep)}
.nav-burger{display:none;background:none;border:1px solid var(--line);border-radius:var(--r-sm);width:40px;height:38px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:4px}
.nav-burger span{width:17px;height:1.6px;background:var(--ink);display:block;transition:.3s}
.only-mobile{display:none}

/* ——————————————————————————————————————— Corner registration ticks (document marks) */
.ticked{position:relative}
.ticked .tick{position:absolute;width:14px;height:14px;pointer-events:none;opacity:.6}
.ticked .tick::before,.ticked .tick::after{content:"";position:absolute;background:var(--gold)}
.ticked .tick::before{width:100%;height:1px}.ticked .tick::after{height:100%;width:1px}
.tick.tl{top:8px;left:8px}.tick.tr{top:8px;right:8px}.tick.tl::after,.tick.tr::after{right:auto}
.tick.tr::before,.tick.tr::after{right:0}.tick.tr::after{left:auto}
.tick.bl{bottom:8px;left:8px}.tick.br{bottom:8px;right:8px}
.tick.bl::before,.tick.br::before{bottom:0;top:auto}.tick.bl::after,.tick.br::after{bottom:0;top:auto}
.tick.tr::before{left:auto}.tick.br::before,.tick.br::after{right:0;left:auto}

/* ——————————————————————————————————————— Seal stamp */
.seal{display:block}
.seal.spin{animation:sealspin 70s linear infinite}
@keyframes sealspin{to{transform:rotate(360deg)}}

/* ——————————————————————————————————————— Textures */
.rosette-bg{position:absolute;pointer-events:none;background-repeat:no-repeat;background-size:contain;background-position:center;opacity:.5}
.rosette-ink{background-image:url("/images/guilloche-rosette-ink.svg")}
.rosette-gold{background-image:url("/images/guilloche-rosette-gold.svg")}
.band{height:48px;background-repeat:repeat-x;background-position:center;background-size:auto 100%;opacity:.5}
.band-ink{background-image:url("/images/guilloche-band-ink.svg")}
.band-gold{background-image:url("/images/guilloche-band-gold.svg");opacity:.6}

/* microprint divider — repeated tiny text, like banknote microtext */
.microprint{font-family:var(--mono);font-size:7px;letter-spacing:.32em;color:var(--ink-faint);
  white-space:nowrap;overflow:hidden;text-transform:uppercase;opacity:.5;user-select:none;line-height:1}
.ink-section .microprint{color:var(--cream-faint)}

/* ——————————————————————————————————————— Generic document card */
.card{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow-doc)}

/* ——————————————————————————————————————— Form fields (for auth cascade) */
.field{display:flex;flex-direction:column;gap:7px;margin-bottom:16px}
.field label{font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-soft)}
.field input,.field select{
  font-family:var(--sans);font-size:15px;color:var(--ink);background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r-sm);padding:13px 14px;transition:border-color .25s,box-shadow .25s}
.field input::placeholder{color:var(--ink-faint)}
.field input:focus,.field select:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft)}

/* ——————————————————————————————————————— Reveal-on-scroll */
[data-reveal]{opacity:0;transform:translateY(22px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:var(--d,0ms)}
[data-reveal].is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  [data-reveal]{opacity:1;transform:none;transition:none}
  .seal.spin,.dot.live{animation:none}
}

/* ——————————————————————————————————————— Footer */
.foot{background:var(--ink);color:var(--cream);padding-top:clamp(56px,8vw,86px)}
.foot a{color:var(--cream-soft);font-size:14px;transition:color .25s}
.foot a:hover{color:var(--gold-bright)}
.foot h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cream-faint);margin-bottom:16px;font-weight:500}
.mrz{font-family:var(--mono);font-size:clamp(10px,1.5vw,14px);letter-spacing:.18em;color:var(--cream-faint);
  white-space:nowrap;overflow:hidden;border-top:1px solid var(--line-ink);padding:16px 0;margin-top:40px;user-select:none}

/* ——————————————————————————————————————— Responsive */
@media (max-width:860px){
  .nav-links{display:none}
  .nav-signin,.nav-create{display:none}
  .nav-burger{display:flex}
  .nav-links.open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;gap:0;
    background:rgba(244,241,233,.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--line);padding:6px var(--pad) 18px}
  .nav-links.open a{padding:14px 0;border-bottom:1px solid var(--line-2);width:100%}
  .nav-links.open .only-mobile{display:block}
  .nav-menu-cta{color:var(--gold-deep);font-weight:700;border-bottom:none!important;margin-top:4px}
}