/* ============================================================
   ESSIVE — Brand Guidelines stylesheet
   Monochrome system: Ink / Graphite / Bone / White
   Type: Cormorant (display antiqua) + Jost (geometric sans)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&family=Jost:wght@300;400;500&display=swap');

:root{
  --ink:#171614;        /* primary near-black */
  --black:#0C0B0A;      /* deepest, for full-bleed dark */
  --graphite:#6E6A63;   /* secondary text / lines */
  --grey:#A7A29A;       /* muted captions */
  --hairline:#E2DDD4;   /* hairline rules on paper */
  --hairline-dk:#312E2A;/* hairline rules on dark */
  --paper:#F3F0EA;      /* warm bone background */
  --paper-2:#EAE5DC;    /* deeper bone, cards */
  --white:#FFFFFF;

  --serif:'Cormorant', Georgia, serif;
  --sans:'Jost', system-ui, sans-serif;

  --maxw:1280px;
  --gut:clamp(20px,5vw,80px);

  /* fluid type */
  --t-mega:clamp(64px,13vw,220px);
  --t-display:clamp(44px,7vw,104px);
  --t-h1:clamp(34px,4.6vw,68px);
  --t-h2:clamp(26px,3vw,40px);
  --t-h3:clamp(20px,1.6vw,26px);
  --t-body:clamp(16px,1.15vw,19px);
  --t-small:13.5px;
  --t-micro:11.5px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{overflow-x:hidden}
body{
  font-family:var(--sans);
  font-weight:300;
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.6;
}
img{display:block;max-width:100%}

/* ---------- label / eyebrow ---------- */
.label{
  font-family:var(--sans);
  font-weight:400;
  font-size:var(--t-micro);
  letter-spacing:.42em;
  text-transform:uppercase;
  color:var(--graphite);
}
.label--ink{color:var(--ink)}
.label--paper{color:var(--paper)}
.num{
  font-family:var(--sans);
  font-weight:300;
  font-size:var(--t-micro);
  letter-spacing:.3em;
  color:var(--grey);
}

/* ---------- display type ---------- */
.serif{font-family:var(--serif);font-weight:300;line-height:1.02;letter-spacing:-.01em}
.serif-it{font-family:var(--serif);font-style:italic;font-weight:300}
.display{font-family:var(--serif);font-weight:300;font-size:var(--t-display);line-height:1.0;letter-spacing:-.015em}
.h1{font-family:var(--serif);font-weight:300;font-size:var(--t-h1);line-height:1.05;letter-spacing:-.01em}
.h2{font-family:var(--serif);font-weight:300;font-size:var(--t-h2);line-height:1.1}
.h3{font-family:var(--sans);font-weight:400;font-size:var(--t-h3);letter-spacing:.02em}
.lede{font-size:clamp(18px,1.6vw,24px);font-weight:300;line-height:1.55;color:var(--ink)}
p{font-size:var(--t-body);color:var(--graphite);max-width:62ch;text-wrap:pretty}
.muted{color:var(--grey)}
em,.it{font-family:var(--serif);font-style:italic}

/* ---------- layout ---------- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-left:var(--gut);padding-right:var(--gut)}
.section{padding-block:clamp(80px,11vh,160px)}
.section--tight{padding-block:clamp(56px,7vh,96px)}
.dark{background:var(--ink);color:var(--paper)}
.dark p{color:#B9B4AB}
.dark .label{color:var(--grey)}
.black{background:var(--black);color:var(--paper)}
.rule{height:1px;background:var(--hairline);border:0}
.dark .rule{background:var(--hairline-dk)}

.grid{display:grid;gap:clamp(24px,3vw,48px)}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
@media(max-width:860px){.g2,.g3,.g4{grid-template-columns:1fr}.g4{grid-template-columns:repeat(2,1fr)}}

/* section header block */
.shead{display:flex;align-items:baseline;gap:24px;margin-bottom:clamp(36px,5vh,64px)}
.shead .num{flex:none;padding-top:.4em}
.shead .label{flex:none}

/* ---------- section index nav (top) ---------- */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gut);
  background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--hairline);
}
.topbar img{height:22px;width:auto;flex:none}
.topbar > .label{flex:none}
.topnav{display:flex;gap:28px;min-width:0}
@media(max-width:1180px){.topbar > .label{display:none}}
.topnav a{font-size:var(--t-micro);letter-spacing:.28em;text-transform:uppercase;color:var(--graphite);text-decoration:none;transition:color .25s}
.topnav a:hover{color:var(--ink)}
@media(max-width:1080px){.topnav{display:none}}

/* ---------- swatches ---------- */
.swatch{display:flex;flex-direction:column;border:1px solid var(--hairline)}
.swatch .chip{aspect-ratio:4/3}
.swatch .meta{padding:18px 20px;display:flex;flex-direction:column;gap:3px}
.swatch .meta .name{font-size:14px;letter-spacing:.04em;color:var(--ink)}
.swatch .meta .val{font-size:var(--t-micro);letter-spacing:.12em;color:var(--grey);text-transform:uppercase}

/* ---------- logo display cards ---------- */
.logocard{display:flex;align-items:center;justify-content:center;min-height:300px;border:1px solid var(--hairline);position:relative}
.logocard .tag{position:absolute;left:18px;bottom:14px;font-size:var(--t-micro);letter-spacing:.28em;text-transform:uppercase;color:var(--grey)}
.logocard.on-dark{background:var(--ink);border-color:var(--hairline-dk)}
.logocard.on-dark .tag{color:var(--grey)}
.logocard.on-paper2{background:var(--paper-2)}

/* do / dont */
.dd{border:1px solid var(--hairline)}
.dd .frame{aspect-ratio:5/4;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;background:var(--white)}
.dd .cap{padding:14px 18px;display:flex;align-items:center;gap:10px;font-size:var(--t-small);letter-spacing:.04em;border-top:1px solid var(--hairline)}
.dd .mk{width:18px;height:18px;flex:none;border-radius:50%;display:grid;place-items:center;font-size:12px}
.mk.no{background:var(--ink);color:var(--paper)}
.mk.yes{background:var(--ink);color:var(--paper)}

/* clear-space diagram helpers */
.cs-box{position:relative;background:var(--paper-2);padding:clamp(28px,5vw,64px);display:flex;align-items:center;justify-content:center}

/* image slot baseline */
image-slot{display:block;width:100%}

/* tone columns */
.tone{display:flex;flex-direction:column;gap:10px;padding:28px 0;border-top:1px solid var(--hairline)}
.tone .k{font-family:var(--serif);font-size:clamp(22px,2vw,30px);font-style:italic}

/* business card / stationery mock */
.card-mock{aspect-ratio:1.75/1;border:1px solid var(--hairline);display:flex;flex-direction:column;justify-content:space-between;padding:26px}
.bleed-dark{background:var(--ink);color:var(--paper)}

/* footer */
.foot{padding-block:clamp(60px,8vh,110px)}

/* fade-in on scroll */
.reveal{opacity:0;transform:translateY(26px);transition:opacity 1s cubic-bezier(.2,.7,.2,1),transform 1s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* utility */
.stack-sm{display:flex;flex-direction:column;gap:14px}
.stack-md{display:flex;flex-direction:column;gap:24px}
.row{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.center{text-align:center}
.maxch{max-width:60ch}

/* ---------- B2B segment list ---------- */
.seglist{border-top:1px solid var(--hairline)}
.seg{display:flex;align-items:baseline;gap:20px;padding:18px 0;border-bottom:1px solid var(--hairline);transition:padding-left .35s cubic-bezier(.2,.7,.2,1)}
.seg:hover{padding-left:14px}
.seg .si{font-family:var(--sans);font-weight:300;font-size:var(--t-micro);letter-spacing:.25em;color:var(--grey);flex:none;width:2.4em}
.seg .sr{font-family:var(--serif);font-weight:300;font-size:clamp(24px,3vw,42px);line-height:1.05;color:var(--ink)}
.seg .se{margin-left:auto;font-size:var(--t-micro);letter-spacing:.28em;text-transform:uppercase;color:var(--grey);flex:none;align-self:center}
@media(max-width:640px){.seg .se{display:none}}

/* ---------- project case studies ---------- */
.case{padding-block:clamp(60px,9vh,120px);border-top:1px solid var(--hairline)}
.case:first-of-type{border-top:0}
.case-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(28px,4vh,44px)}
.case-name{font-family:var(--serif);font-weight:300;font-size:clamp(48px,8vw,120px);line-height:.92;letter-spacing:-.02em}
.case-name .it{font-style:italic}
.case-tags{display:flex;flex-direction:column;gap:8px;text-align:right}
@media(max-width:640px){.case-tags{text-align:left}}
.case-hero{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.case-body{display:grid;grid-template-columns:1fr 1.1fr;gap:clamp(24px,4vw,56px);margin-top:clamp(20px,3vh,32px);align-items:start}
@media(max-width:860px){.case-body{grid-template-columns:1fr}}
.case-strip{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.case-strip img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block}