/* ============================================================
   CONTINUUM — Website
   Design system: Ember palette · Fraunces + Inter · warm-on-warm
   Dark hero → bone body. Premium, calm, restrained.
   ============================================================ */

:root{
  /* brand */
  --bg:#FCFAF6; --bg-alt:#F5F0E8; --ink:#15110D; --ink-2:#4A4138;
  --muted:#8A7F72; --line:#EBE4DA; --line-2:#DDD3C6;
  --amber:#ED9A47; --ember:#C2452C;
  /* dark surface (hero / sections on ink) */
  --d-bg:#15110D; --d-bg-2:#1C1712; --d-line:#2A241D;
  --d-text:#EDE7DD; --d-muted:#9A8D7E; --d-faint:#6A6258;
  /* type */
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;
  /* metrics */
  --maxw:1200px; --gutter:clamp(22px,5vw,64px);
  --r:18px; --r-lg:26px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth; -webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion: reduce){ html{scroll-behavior:auto;} }
body{
  font-family:var(--sans); background:var(--bg); color:var(--ink);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  font-size:18px; line-height:1.6; overflow-x:hidden;
}
::selection{background:var(--ember); color:#fff;}
a{color:inherit; text-decoration:none;}
img,svg,canvas{display:block; max-width:100%;}

/* ---------- layout ---------- */
.container{width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:var(--gutter);}
.section{padding-block:clamp(80px,11vw,150px); position:relative;}
.section--tight{padding-block:clamp(60px,8vw,104px);}
.section--alt{background:var(--bg-alt);}
.section--ink{background:var(--d-bg); color:var(--d-text);}
.section--ink .eyebrow{color:var(--d-muted);}

/* ---------- type ---------- */
.display{font-family:var(--serif); font-weight:300; letter-spacing:-.025em; line-height:1.04; font-optical-sizing:auto;}
.it{font-style:italic;}
h1,h2,h3{font-weight:300;}
.eyebrow{font-family:var(--sans); font-weight:500; font-size:14px; letter-spacing:.18em; text-transform:uppercase; color:var(--muted);}
.lede{font-size:clamp(20px,2.4vw,26px); line-height:1.5; color:var(--ink-2); letter-spacing:-.01em;}
.section--ink .lede{color:var(--d-muted);}

.h-xl{font-size:clamp(44px,7.2vw,104px);}
.h-lg{font-size:clamp(36px,5.2vw,72px);}
.h-md{font-size:clamp(30px,3.8vw,52px);}

.section__head{max-width:62ch;}
.section__head .eyebrow{margin-bottom:22px;}
.section__head .lede{margin-top:24px;}

/* ---------- buttons ---------- */
.btn{
  --bh:#fff;
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family:var(--sans); font-size:16px; font-weight:500; letter-spacing:.01em;
  padding:15px 26px; border-radius:999px; border:1px solid transparent; cursor:pointer;
  transition:transform .35s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease), box-shadow .25s var(--ease);
  white-space:nowrap;
}
.btn:active{transform:translateY(1px);}
.btn--primary{ background:var(--ink); color:#fff; }
.btn--primary:hover{ background:#000; box-shadow:0 10px 30px -10px rgba(21,17,13,.5); }
.section--ink .btn--primary{ background:#fff; color:var(--ink); }
.section--ink .btn--primary:hover{ background:var(--bg); }
.btn--ember{ background:linear-gradient(135deg,var(--amber),var(--ember)); color:#fff; }
.btn--ember:hover{ filter:brightness(1.04); box-shadow:0 12px 34px -12px rgba(194,69,44,.6); }
.btn--ghost{ background:transparent; border-color:var(--line-2); color:var(--ink); }
.btn--ghost:hover{ border-color:var(--ink); }
.section--ink .btn--ghost{ border-color:var(--d-line); color:var(--d-text); }
.section--ink .btn--ghost:hover{ border-color:var(--d-muted); }
.hero .btn--ghost{ border-color:var(--d-line); color:var(--d-text); }
.hero .btn--ghost:hover{ border-color:var(--d-muted); }
.btn--sm{padding:11px 18px; font-size:15px;}
.btn--lg{padding:17px 32px; font-size:17px;}

/* ---------- nav ---------- */
.nav{
  position:fixed; inset:0 0 auto 0; z-index:50; padding-block:16px;
  transition:background .4s var(--ease), border-color .4s var(--ease), backdrop-filter .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav__inner{display:flex; align-items:center; justify-content:space-between; gap:24px;}
.nav.is-light{ background:color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter:saturate(140%) blur(14px); border-color:var(--line); }
.wordmark{display:flex; align-items:center; gap:11px; font-weight:600; letter-spacing:.2em; text-transform:uppercase; font-size:16px; color:var(--d-text); transition:color .4s var(--ease);}
.nav.is-light .wordmark{color:var(--ink);}
.wordmark__mark{width:26px; height:26px;}
.nav__links{display:flex; align-items:center; gap:8px;}
.nav__link{font-size:15px; font-weight:500; color:var(--d-muted); padding:10px 14px; border-radius:999px; transition:color .25s var(--ease);}
.nav.is-light .nav__link{color:var(--ink-2);}
.nav__link:hover{color:var(--ember);}
@media (max-width:640px){ .nav__link--hide-sm{display:none;} }

/* ---------- reveal (opacity stays 1 so content is never trapped hidden;
   subtle rise only, and only when motion is allowed) ---------- */
.reveal{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ transform:none; } }

/* ---------- footer ---------- */
.footer{background:var(--d-bg); color:var(--d-muted); padding-block:64px 56px;}
.footer__top{display:flex; flex-wrap:wrap; justify-content:space-between; gap:40px; align-items:flex-start;}
.footer__brand{display:flex; align-items:center; gap:12px; color:var(--d-text); font-weight:600; letter-spacing:.18em; text-transform:uppercase; font-size:15px;}
.footer__brand .wordmark__mark{width:24px; height:24px;}
.footer__nav{display:flex; gap:28px; flex-wrap:wrap;}
.footer__nav a{color:var(--d-muted); font-size:15px; transition:color .25s var(--ease);}
.footer__nav a:hover{color:var(--d-text);}
.footer__bottom{margin-top:48px; padding-top:28px; border-top:1px solid var(--d-line); display:flex; flex-wrap:wrap; justify-content:space-between; gap:14px; font-size:14px; color:var(--d-faint);}
.footer__tagline{font-family:var(--serif); font-style:italic; font-size:17px; color:var(--d-muted);}

/* ---------- v1.1: mobile nav menu ---------- */
.nav__toggle{ display:none; background:transparent; border:1px solid transparent; cursor:pointer; }
.nav__toggle .bars{ position:relative; display:block; width:20px; height:2px; border-radius:2px; background:currentColor; transition:background .2s var(--ease); }
.nav__toggle .bars::before,.nav__toggle .bars::after{ content:""; position:absolute; left:0; width:20px; height:2px; border-radius:2px; background:currentColor; transition:transform .3s var(--ease); }
.nav__toggle .bars::before{ top:-6px; } .nav__toggle .bars::after{ top:6px; }
.nav.open .nav__toggle .bars{ background:transparent; }
.nav.open .nav__toggle .bars::before{ transform:translateY(6px) rotate(45deg); }
.nav.open .nav__toggle .bars::after{ transform:translateY(-6px) rotate(-45deg); }

@media (max-width:640px){
  .nav__toggle{ display:inline-flex; align-items:center; justify-content:center; width:42px; height:42px; border-radius:999px; color:var(--d-text); }
  .nav.is-light .nav__toggle{ color:var(--ink); }
  .nav__links{
    position:absolute; top:100%; left:var(--gutter); right:var(--gutter); margin-top:12px;
    flex-direction:column; align-items:stretch; gap:4px; padding:10px; border-radius:18px;
    background:color-mix(in srgb, var(--bg) 97%, transparent);
    -webkit-backdrop-filter:saturate(140%) blur(16px); backdrop-filter:saturate(140%) blur(16px);
    border:1px solid var(--line); box-shadow:0 24px 60px -24px rgba(21,17,13,.45);
    opacity:0; visibility:hidden; transform:translateY(-8px);
    transition:opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
  }
  .nav.open .nav__links{ opacity:1; visibility:visible; transform:none; }
  .nav__link--hide-sm{ display:block; }            /* surface the links inside the menu */
  .nav__links .nav__link{ color:var(--ink-2); padding:14px 16px; border-radius:12px; }
  .nav__links .nav__link:hover{ background:var(--bg-alt); color:var(--ember); }
  .nav__links .btn--ember{ width:100%; margin-top:4px; }
}