/* ============================================================
   Halstead Lane — core stylesheet
   ============================================================ */

:root{
  --paper:      #F7F5F0;
  --paper-2:    #F0ECE4;
  --paper-3:    #E5E0D6;
  --ink:        #22201C;
  --ink-2:      #4C4840;
  --ink-3:      #7E786D;
  --stone:      #A89E8E;
  --line:       rgba(34,32,28,.13);
  --line-2:     rgba(34,32,28,.28);
  --paper-line: rgba(247,245,240,.28);

  --sans: "Jost", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --serif: "Cormorant Garamond", "Times New Roman", Times, serif;

  --gut: clamp(1.5rem, 5vw, 5.5rem);
  --max: 1440px;
}

*,*::before,*::after{ box-sizing:border-box; }

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-weight:300;
  font-size:15px;
  line-height:1.85;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img{ max-width:100%; display:block; }

/* ---------- type primitives ---------- */

h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:300;
  margin:0;
  line-height:1.08;
  letter-spacing:.005em;
}

p{ margin:0 0 1.35em; }
p:last-child{ margin-bottom:0; }

a{ color:inherit; }

.eyebrow{
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.34em;
  color:var(--ink-3);
  margin:0 0 2.2rem;
  font-weight:400;
}

.display{ font-size:clamp(2.9rem, 8.5vw, 7.2rem); }
.h2{ font-size:clamp(2rem, 4.4vw, 3.5rem); }
.h3{ font-size:clamp(1.5rem, 2.2vw, 2rem); }

.lede{
  font-size:clamp(1.05rem, 1.5vw, 1.35rem);
  line-height:1.75;
  color:var(--ink-2);
  font-weight:300;
}

.muted{ color:var(--ink-3); }

/* ---------- layout ---------- */

.wrap{
  max-width:var(--max);
  margin:0 auto;
  padding-left:var(--gut);
  padding-right:var(--gut);
}

.narrow{ max-width:680px; }
.mid{ max-width:900px; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }

section{ position:relative; }

.band{ padding:clamp(5rem, 11vw, 10.5rem) 0; }
.band--tight{ padding:clamp(3.5rem, 7vw, 6.5rem) 0; }
.band--alt{ background:var(--paper-2); }
.band--deep{ background:var(--ink); color:var(--paper); }
.band--deep .muted{ color:rgba(247,245,240,.55); }
.band--deep .eyebrow{ color:rgba(247,245,240,.5); }

.rule{ height:1px; background:var(--line); border:0; margin:0; }

/* ---------- header ---------- */

.hdr{
  position:fixed;
  inset:0 0 auto 0;
  z-index:80;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
  padding:1.45rem var(--gut);
  transition:background .5s ease, border-color .5s ease, padding .5s ease;
  border-bottom:1px solid transparent;
}
.hdr.is-stuck{
  background:rgba(247,245,240,.93);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
  backdrop-filter:saturate(140%) blur(14px);
  border-bottom-color:var(--line);
  padding-top:1.05rem;
  padding-bottom:1.05rem;
}

.mark{
  font-family:var(--serif);
  font-size:clamp(.95rem, 1.35vw, 1.15rem);
  text-transform:uppercase;
  letter-spacing:.42em;
  text-decoration:none;
  white-space:nowrap;
  line-height:1;
}

.nav{ display:flex; align-items:center; gap:clamp(1.5rem,3vw,3rem); }

.nav a{
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:.26em;
  text-decoration:none;
  color:var(--ink-2);
  position:relative;
  padding-bottom:3px;
  transition:color .3s ease;
}
.nav a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:0;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .4s cubic-bezier(.2,.7,.2,1);
}
.nav a:hover{ color:var(--ink); }
.nav a:hover::after,
.nav a[aria-current="page"]::after{ transform:scaleX(1); }
.nav a[aria-current="page"]{ color:var(--ink); }

/* ---------- hero ---------- */

.hero{
  position:relative;
  min-height:100svh;
  display:flex;
  align-items:center;
  overflow:hidden;
  background:var(--paper-2);
}
.hero__tex{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
}
.hero__inner{
  position:relative;
  z-index:2;
  width:100%;
  padding-top:6rem;
  padding-bottom:4rem;
}
.hero__title{
  max-width:16ch;
  margin-bottom:2.2rem;
}
.hero__sub{
  max-width:44ch;
  font-size:clamp(1rem,1.35vw,1.2rem);
  line-height:1.8;
  color:var(--ink-2);
}

.scrollcue{
  position:absolute;
  left:var(--gut);
  bottom:2.4rem;
  z-index:2;
  font-size:9.5px;
  text-transform:uppercase;
  letter-spacing:.3em;
  color:var(--ink-3);
  display:flex;
  align-items:center;
  gap:.9rem;
}
.scrollcue::after{
  content:"";
  width:54px;
  height:1px;
  background:var(--line-2);
  transform-origin:left;
  animation:cue 2.8s ease-in-out infinite;
}
@keyframes cue{
  0%,100%{ transform:scaleX(.35); opacity:.45; }
  50%    { transform:scaleX(1);   opacity:1;   }
}

/* ---------- link affordances ---------- */

.link{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:.26em;
  text-decoration:none;
  color:var(--ink);
  padding-bottom:5px;
  border-bottom:1px solid var(--line-2);
  transition:border-color .35s ease, gap .35s ease;
}
.link:hover{ border-bottom-color:var(--ink); gap:1.05rem; }
.link span{ transition:transform .35s ease; }
.link:hover span{ transform:translateX(3px); }

.band--deep .link{ color:var(--paper); border-bottom-color:var(--paper-line); }
.band--deep .link:hover{ border-bottom-color:var(--paper); }

.btn{
  display:inline-block;
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:.26em;
  text-decoration:none;
  color:var(--ink);
  background:transparent;
  border:1px solid var(--line-2);
  padding:1.15rem 2.6rem;
  cursor:pointer;
  font-family:var(--sans);
  font-weight:300;
  transition:background .4s ease, color .4s ease, border-color .4s ease;
}
.btn:hover{ background:var(--ink); border-color:var(--ink); color:var(--paper); }
.btn:disabled{ opacity:.45; cursor:default; }
.btn:disabled:hover{ background:transparent; color:var(--ink); border-color:var(--line-2); }

/* ---------- editorial two-column ---------- */

.split{
  display:grid;
  grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);
  gap:clamp(2.5rem,7vw,7rem);
  align-items:start;
}
.split--even{ grid-template-columns:1fr 1fr; }

/* ---------- services ---------- */

.tri{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:clamp(2rem,4.5vw,4.5rem);
}
.svc__tex{ height:230px; width:100%; margin-bottom:1.9rem; }
.svc__n{
  font-size:10px;
  letter-spacing:.3em;
  color:var(--ink-3);
  display:block;
  margin-bottom:1rem;
}
.svc h3{ margin-bottom:1rem; }
.svc p{ color:var(--ink-2); }

/* ---------- materials ---------- */

.mats{
  display:grid;
  grid-template-columns:repeat(6,1fr);
  gap:clamp(.9rem,1.8vw,1.8rem);
}
.mat__tex{ aspect-ratio:3/4; width:100%; margin-bottom:1rem; }
.mat__name{
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.24em;
  color:var(--ink-2);
  display:block;
}
.mat__note{ font-size:11.5px; color:var(--ink-3); letter-spacing:.02em; }

/* ---------- process ---------- */

.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:clamp(1.5rem,3.5vw,3.5rem);
  border-top:1px solid var(--paper-line);
  padding-top:3rem;
}
.step__n{
  font-family:var(--serif);
  font-size:2.6rem;
  line-height:1;
  color:rgba(247,245,240,.4);
  display:block;
  margin-bottom:1.4rem;
}
.step h3{ font-size:1.35rem; margin-bottom:.85rem; }
.step p{ font-size:13.5px; color:rgba(247,245,240,.62); line-height:1.8; }

/* ---------- quote ---------- */

.quote{
  font-family:var(--serif);
  font-size:clamp(1.65rem,3.6vw,3rem);
  line-height:1.3;
  font-style:italic;
  max-width:19ch;
}

/* ---------- list / detail rows ---------- */

.rows{ border-top:1px solid var(--line); }
.row{
  display:grid;
  grid-template-columns:clamp(3rem,7vw,7rem) minmax(0,1fr) minmax(0,1.4fr);
  gap:clamp(1.5rem,4vw,4rem);
  padding:clamp(2rem,4vw,3.4rem) 0;
  border-bottom:1px solid var(--line);
  align-items:baseline;
}
.row__n{ font-size:10px; letter-spacing:.28em; color:var(--ink-3); }
.row h3{ font-size:clamp(1.35rem,2vw,1.8rem); }
.row p{ color:var(--ink-2); font-size:14.5px; }
.row ul{
  margin:1.1rem 0 0;
  padding:0;
  list-style:none;
  columns:2;
  column-gap:2rem;
}
.row li{
  font-size:12.5px;
  color:var(--ink-3);
  padding:.32rem 0;
  break-inside:avoid;
}

/* ---------- form ---------- */

.form{ display:grid; gap:2.4rem; }
.field{ display:grid; gap:.75rem; }
.field label{
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.26em;
  color:var(--ink-3);
}
.field input,
.field select,
.field textarea{
  font-family:var(--sans);
  font-weight:300;
  font-size:15px;
  color:var(--ink);
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line-2);
  padding:.65rem 0;
  border-radius:0;
  transition:border-color .35s ease;
  -webkit-appearance:none;
  appearance:none;
}
.field select{
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='10' height='7'><path d='M1 1l4 4 4-4' fill='none' stroke='%237E786D' stroke-width='1'/></svg>");
  background-repeat:no-repeat;
  background-position:right .2rem center;
}
.field textarea{ resize:vertical; min-height:120px; line-height:1.8; }
.field input:focus,
.field select:focus,
.field textarea:focus{ outline:none; border-bottom-color:var(--ink); }
.field input::placeholder,
.field textarea::placeholder{ color:var(--ink-3); opacity:.55; }

.form__row{ display:grid; grid-template-columns:1fr 1fr; gap:2.4rem; }
.form__foot{ display:flex; align-items:center; gap:1.8rem; flex-wrap:wrap; }

.formnote{ font-size:11.5px; color:var(--ink-3); line-height:1.7; }

.formmsg{
  font-size:13px;
  line-height:1.7;
  padding:1.1rem 1.3rem;
  border:1px solid var(--line);
  background:var(--paper-2);
}
.formmsg[data-tone="err"]{ border-color:#9d6b5a; color:#7d4f40; background:rgba(157,107,90,.07); }

/* honeypot */
.hp{ position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }

/* ---------- footer ---------- */

.ftr{ background:var(--ink); color:var(--paper); padding:clamp(4rem,8vw,7rem) 0 2.5rem; }
.ftr__top{
  display:grid;
  grid-template-columns:minmax(0,1.3fr) repeat(2,minmax(0,.7fr));
  gap:clamp(2rem,5vw,5rem);
  padding-bottom:clamp(3rem,6vw,5rem);
  border-bottom:1px solid var(--paper-line);
}
.ftr .mark{ color:var(--paper); display:inline-block; margin-bottom:1.5rem; }
.ftr p{ color:rgba(247,245,240,.58); font-size:13.5px; max-width:34ch; }
.ftr h4{
  font-family:var(--sans);
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.26em;
  color:rgba(247,245,240,.45);
  margin:0 0 1.5rem;
  font-weight:400;
}
.ftr ul{ list-style:none; margin:0; padding:0; }
.ftr li{ margin-bottom:.85rem; }
.ftr li a{
  font-size:13.5px;
  text-decoration:none;
  color:rgba(247,245,240,.8);
  transition:color .3s ease;
}
.ftr li a:hover{ color:var(--paper); }

.ftr__btm{
  display:flex;
  justify-content:space-between;
  gap:1.5rem;
  flex-wrap:wrap;
  padding-top:2.5rem;
  font-size:10.5px;
  text-transform:uppercase;
  letter-spacing:.2em;
  color:rgba(247,245,240,.42);
}

/* ---------- page head ---------- */

.phead{ padding:clamp(9rem,15vw,13rem) 0 clamp(3rem,6vw,5rem); }
.phead h1{ max-width:15ch; margin-bottom:1.8rem; }
.phead .lede{ max-width:52ch; }

/* ---------- reveal ---------- */

.rv{ opacity:0; transform:translateY(22px); }
.is-ready .rv{ transition:opacity 1.1s cubic-bezier(.2,.7,.2,1), transform 1.1s cubic-bezier(.2,.7,.2,1); }
.rv.in{ opacity:1; transform:none; }

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

/* ---------- responsive ---------- */

@media (max-width:1000px){
  .mats{ grid-template-columns:repeat(3,1fr); row-gap:2.4rem; }
  .steps{ grid-template-columns:repeat(2,1fr); row-gap:3rem; }
  .ftr__top{ grid-template-columns:1fr 1fr; }
}

@media (max-width:820px){
  body{ font-size:14.5px; }
  .tri{ grid-template-columns:1fr; row-gap:3.5rem; }
  .split,.split--even{ grid-template-columns:1fr; }
  .row{ grid-template-columns:1fr; gap:1rem; }
  .row ul{ columns:1; }
  .form__row{ grid-template-columns:1fr; }
  .nav{ gap:1.25rem; }
  .nav a{ font-size:9.5px; letter-spacing:.2em; }
  .mark{ letter-spacing:.3em; }
  .svc__tex{ height:200px; }
}

@media (max-width:560px){
  .mats{ grid-template-columns:repeat(2,1fr); }
  .steps{ grid-template-columns:1fr; }
  .ftr__top{ grid-template-columns:1fr; }
  .hdr{ padding:1.1rem var(--gut); }
  .mark{ font-size:.82rem; letter-spacing:.24em; }
}