/* MERRICK & QUOIN — concept project 02
   Architectural restraint: limestone, charcoal, copper. */

@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@300;400;500;600&family=Inter+Tight:wght@300;400;500&display=swap');

:root {
  --bg: #f8f6f1;
  --warm: #f8f6f1;
  --limestone: #ded7cc;
  --charcoal: #191919;
  --copper: #a87959;
  --concrete: #85827c;
  --ink: #1c1c1a;
  --muted: #6f6b65;
  --line: rgba(25, 25, 25, .16);
  --line-soft: rgba(25, 25, 25, .08);
  --accent: #a87959;
  --focus: #a87959;
  --font-body: "Inter Tight", system-ui, sans-serif;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --shell: 1400px;
  --gutter: 46px;
}

body { background: var(--bg); color: var(--ink); }

/* ---------- header ---------- */
.masthead {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 46px;
  color: #f8f6f1;
  mix-blend-mode: normal;
  transition: background .4s ease, color .4s ease, padding .4s ease, border-color .4s ease;
  border-bottom: 1px solid transparent;
}
.masthead.is-stuck {
  background: rgba(248, 246, 241, .94);
  color: var(--ink);
  backdrop-filter: blur(14px);
  padding-block: 14px;
  border-bottom-color: var(--line-soft);
}
.wordmark {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .26em;
  text-transform: uppercase;
  line-height: 1.2;
}
.wordmark small { display: block; font-size: 8px; letter-spacing: .34em; color: currentColor; opacity: .62; margin-top: 4px; }
.masthead.is-stuck .wordmark small { opacity: .7; }

.mnav { display: flex; gap: 28px; font-size: 11px; letter-spacing: .2em; text-transform: uppercase; }
.mnav a { opacity: .78; transition: opacity .25s ease; }
.mnav a:hover, .mnav a[aria-current="page"] { opacity: 1; }
.mnav a[aria-current="page"] { border-bottom: 1px solid currentColor; padding-bottom: 3px; }
.tel {
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  border: 1px solid currentColor;
  padding: 11px 16px;
  transition: background .3s ease, color .3s ease;
}
.tel:hover { background: currentColor; }
.masthead.is-stuck .tel:hover { color: var(--bg); }
.burger-m { display: none; width: 42px; height: 42px; border: 1px solid currentColor; place-items: center; }
.burger-m span { width: 15px; height: 1px; background: currentColor; box-shadow: 0 -5px 0 currentColor, 0 5px 0 currentColor; }

.drawer {
  position: fixed;
  inset: 0;
  z-index: 65;
  background: var(--charcoal);
  color: var(--warm);
  padding: 100px 26px 40px;
  display: grid;
  align-content: start;
  gap: 2px;
  transform: translateY(-101%);
  transition: transform .5s cubic-bezier(.65, 0, .35, 1);
}
.drawer.is-open { transform: none; }
.drawer a { font-family: var(--font-display); font-size: 30px; padding: 14px 0; border-bottom: 1px solid rgba(248,246,241,.14); }

/* ---------- hero ---------- */
.mhero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-content: end;
  padding: 0 0 clamp(26px, 4vw, 52px);
  overflow: hidden;
  color: var(--warm);
  background: var(--charcoal);
}
.mhero-media { position: absolute; inset: 0; }
.mhero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(.72) contrast(1.06) brightness(.82);
  transform: scale(1.04);
  will-change: transform;
}
.mhero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15, 15, 15, .55), transparent 32%, rgba(15, 15, 15, .72) 92%),
    linear-gradient(90deg, rgba(15, 15, 15, .5), transparent 60%);
}
.mhero-inner { position: relative; z-index: 2; }
.mhero-kicker {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 10px;
  letter-spacing: .28em;
  text-transform: uppercase;
  opacity: .78;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(248, 246, 241, .28);
}
.mhero h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(44px, 9.4vw, 152px);
  line-height: .88;
  letter-spacing: -.045em;
  text-transform: uppercase;
  margin: clamp(20px, 3vw, 34px) 0 0;
  max-width: 17ch;
}
.mhero h1 span { display: block; }
.mhero-foot {
  margin-top: clamp(26px, 4vw, 48px);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: end;
  gap: 22px;
}
.mhero-foot p { max-width: 42ch; font-size: 15px; line-height: 1.7; color: rgba(248, 246, 241, .82); }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  padding-bottom: 7px;
  border-bottom: 1px solid currentColor;
  transition: gap .3s ease;
}
.link-arrow:hover { gap: 18px; }

/* ---------- sections ---------- */
.band { padding: clamp(64px, 9vw, 132px) 0; }
.band--dark { background: var(--charcoal); color: var(--warm); }
.band--limestone { background: var(--limestone); }
.band-head { display: grid; grid-template-columns: .5fr 1fr; gap: clamp(20px, 4vw, 64px); margin-bottom: clamp(32px, 4vw, 62px); }
.band-head .index { font-family: var(--font-display); font-size: 11px; letter-spacing: .24em; text-transform: uppercase; color: var(--copper); padding-top: 8px; }
.band-head h2 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(30px, 4.6vw, 66px);
  line-height: .98;
  letter-spacing: -.035em;
  text-transform: uppercase;
}
.band-head p { margin-top: 20px; font-size: 15.5px; line-height: 1.78; color: var(--muted); max-width: 56ch; }
.band--dark .band-head p { color: rgba(248, 246, 241, .68); }

.duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(20px, 4vw, 60px); align-items: start; }
.lede-lg { font-size: clamp(18px, 1.5vw, 23px); line-height: 1.6; letter-spacing: -.01em; }
.muted { color: var(--muted); }
.band--dark .muted { color: rgba(248, 246, 241, .66); }

/* ---------- project index ---------- */
.index-list { border-top: 1px solid var(--line); }
.index-row {
  position: relative;
  display: grid;
  grid-template-columns: 46px 1.4fr .9fr .6fr 40px;
  gap: clamp(12px, 2.4vw, 36px);
  align-items: center;
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .45s cubic-bezier(.22,.61,.36,1), background .4s ease;
}
.index-row:hover { padding-left: 14px; background: rgba(168, 121, 89, .05); }
.index-num { font-size: 11px; letter-spacing: .2em; color: var(--copper); }
.index-name { font-family: var(--font-display); font-weight: 400; font-size: clamp(19px, 2.4vw, 32px); letter-spacing: -.02em; }
.index-name a::after { content: ""; position: absolute; inset: 0; }
.index-meta { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.index-year { font-size: 12px; color: var(--concrete); }
.index-go { justify-self: end; color: var(--copper); transition: transform .35s ease; }
.index-row:hover .index-go { transform: translate(3px, -3px); }

/* floating hover preview */
.preview {
  position: fixed;
  z-index: 40;
  width: 320px;
  aspect-ratio: 4 / 3;
  pointer-events: none;
  overflow: hidden;
  opacity: 0;
  transform: translate(-50%, -50%) scale(.94);
  transition: opacity .3s ease, transform .4s cubic-bezier(.22,.61,.36,1);
  box-shadow: 0 24px 60px rgba(20, 20, 20, .28);
}
.preview.is-on { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.preview img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- before / after ---------- */
.compare-wrap { position: relative; }
.compare {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #d9d2c6;
  cursor: ew-resize;
  touch-action: none;
  user-select: none;
}
.compare img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.compare .after-img { filter: saturate(1.05) contrast(1.04) brightness(1.03) sepia(.06); }
.compare .before-img { filter: grayscale(1) contrast(.82) brightness(1.08) sepia(.12); clip-path: inset(0 50% 0 0); }
.compare-handle {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  width: 1px;
  background: rgba(248, 246, 241, .9);
  pointer-events: none;
}
.compare-handle::after {
  content: "⇄";
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 46px; height: 46px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--warm);
  color: var(--charcoal);
  font-size: 15px;
  letter-spacing: 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
}
.compare input[type="range"] {
  position: absolute;
  inset: auto 0 -1px 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
  margin: 0;
}
.compare-labels {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--warm);
  background: linear-gradient(transparent, rgba(15, 15, 15, .6));
  pointer-events: none;
}

/* ---------- project cards ---------- */
.project-grid { display: grid; gap: clamp(28px, 4vw, 64px); }
.project {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: clamp(20px, 3.4vw, 54px);
  align-items: end;
  padding-bottom: clamp(24px, 3vw, 40px);
  border-bottom: 1px solid var(--line);
}
.project:nth-child(even) .project-media { order: 2; }
.project-media { position: relative; overflow: hidden; aspect-ratio: 4 / 3; background: var(--limestone); }
.project-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s cubic-bezier(.22,.61,.36,1); filter: saturate(.9) contrast(1.04); }
.project:hover .project-media img { transform: scale(1.045); }
.project h3 { font-family: var(--font-display); font-weight: 400; font-size: clamp(24px, 3vw, 44px); letter-spacing: -.03em; line-height: 1; }
.project .place { font-size: 11px; letter-spacing: .2em; text-transform: uppercase; color: var(--copper); margin-bottom: 12px; display: block; }
.project p { margin-top: 14px; font-size: 15px; line-height: 1.75; color: var(--muted); }
.spec { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 20px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--concrete); }
.spec b { display: block; font-family: var(--font-display); font-size: 15px; letter-spacing: 0; text-transform: none; color: var(--ink); margin-top: 4px; font-weight: 400; }

/* ---------- expertise / rows ---------- */
.exp { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.exp > div { background: var(--bg); padding: clamp(20px, 2.4vw, 34px); }
.band--limestone .exp > div { background: var(--limestone); }
.exp h3 { font-family: var(--font-display); font-weight: 400; font-size: 19px; letter-spacing: -.01em; }
.exp p { margin-top: 10px; font-size: 13.5px; line-height: 1.7; color: var(--muted); }
.exp .n { font-size: 10px; letter-spacing: .2em; color: var(--copper); display: block; margin-bottom: 14px; }

/* ---------- forms ---------- */
.enquiry { display: grid; gap: 16px; }
.field-m { display: grid; gap: 7px; }
.field-m label { font-size: 10px; letter-spacing: .22em; text-transform: uppercase; color: var(--muted); }
.field-m input, .field-m select, .field-m textarea {
  width: 100%;
  padding: 14px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink);
  border-radius: 0;
  transition: border-color .25s ease;
}
.field-m textarea { min-height: 110px; resize: vertical; }
.field-m input:focus, .field-m select:focus, .field-m textarea:focus { outline: none; border-bottom-color: var(--copper); }
.field-m select { appearance: none; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.submit-m {
  justify-self: start;
  margin-top: 8px;
  padding: 16px 30px;
  background: var(--charcoal);
  color: var(--warm);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  transition: background .3s ease;
}
.submit-m:hover { background: var(--copper); }
.form-out {
  display: none;
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--copper);
  font-size: 14px;
  line-height: 1.7;
}
.form-out.on { display: block; }
.form-note { font-size: 12px; color: var(--muted); line-height: 1.7; }

/* ---------- footer ---------- */
.foot { background: var(--charcoal); color: var(--warm); padding: clamp(44px, 6vw, 78px) 0 28px; }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 34px; }
.foot h4 { font-size: 10px; letter-spacing: .24em; text-transform: uppercase; color: var(--copper); font-weight: 500; }
.foot ul { display: grid; gap: 9px; margin-top: 16px; font-size: 14px; color: rgba(248, 246, 241, .78); }
.foot a:hover { color: #fff; }
.foot-bottom {
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid rgba(248, 246, 241, .15);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  color: rgba(248, 246, 241, .55);
}

/* interior page hero */
.phero { padding: clamp(120px, 15vw, 190px) 0 clamp(36px, 4vw, 60px); }
.phero h1 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(38px, 7.6vw, 112px);
  line-height: .92;
  letter-spacing: -.04em;
  text-transform: uppercase;
  margin-top: 18px;
}
.phero p { margin-top: 22px; max-width: 58ch; font-size: 16px; line-height: 1.78; color: var(--muted); }
.crumb { font-size: 10px; letter-spacing: .24em; text-transform: uppercase; color: var(--copper); }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  /* Collapse the horizontal navigation before it can collide with the wordmark. */
  .masthead { padding: 18px 28px; gap: 18px; }
  .mnav, .tel.desktop { display: none; }
  .burger-m { display: grid; }
  .band-head { grid-template-columns: 1fr; }
  .duo, .project { grid-template-columns: 1fr; }
  .project:nth-child(even) .project-media { order: 0; }
  .exp { grid-template-columns: 1fr 1fr; }
  .index-row { grid-template-columns: 34px 1fr auto; }
  .index-meta, .index-year { display: none; }
  .preview { display: none; }
}

@media (max-width: 820px) {
  .masthead { padding: 16px 20px; }
  .mnav, .tel.desktop { display: none; }
  .burger-m { display: grid; }
  .mhero-kicker { font-size: 9px; letter-spacing: .18em; }
  .exp { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .band { padding: 56px 0; }
}