/* ============================================================
   MODS DESIGN STUDIO — mods.css
   Design system: "Quarry" palette · "Settle" motion language
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Archivo:wght@300;400;500;600;800&display=swap');

:root {
  /* Colour — Quarry */
  --warm-white: #FAF8F4;
  --ivory:      #F3EFE7;
  --stone:      #E5DFD3;
  --travertine: #C9BFAC;
  --umber:      #6B6257;
  --charcoal:   #2A2724;
  --ink:        #161412;
  --bronze:     #8A6F4D;

  /* Type */
  --serif: 'Instrument Serif', 'Canela', Georgia, serif;
  --sans:  'Archivo', 'Söhne', 'Helvetica Neue', Arial, sans-serif;
  --t-hero: clamp(3rem, 8.5vw, 8.75rem);
  --t-h2:   clamp(2rem, 4.5vw, 4rem);
  --t-h3:   clamp(1.375rem, 2.2vw, 2rem);
  --t-lead: clamp(1.125rem, 1.5vw, 1.375rem);
  --t-body: 1.0625rem;
  --t-meta: 0.8125rem;

  /* Space */
  --margin: clamp(20px, 5vw, 80px);
  --space-xl: clamp(96px, 14vh, 176px);
  --space-lg: clamp(64px, 9vh, 112px);
  --space-md: clamp(32px, 5vh, 56px);
  --space-sm: 16px;
  --maxw: 1440px;

  /* Motion — Settle */
  --ease-quiet: cubic-bezier(0.23, 1, 0.32, 1);
  --ease-drift: cubic-bezier(0.77, 0, 0.175, 1);
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  font-weight: 400;
  font-size: var(--t-body);
  line-height: 1.65;
  color: var(--charcoal);
  background: var(--warm-white);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; background: none; border: none; cursor: pointer; color: inherit; }

::selection { background: var(--bronze); color: var(--warm-white); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--warm-white); padding: 12px 20px;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--bronze); outline-offset: 3px; }

/* ---------- Type helpers ---------- */
.serif { font-family: var(--serif); font-weight: 400; }
.meta {
  font-family: var(--sans);
  font-size: var(--t-meta);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--umber);
}
h1, h2, h3 { font-family: var(--serif); font-weight: 400; color: var(--charcoal); }
h1 { font-size: var(--t-hero); line-height: 0.95; letter-spacing: -0.01em; }
h2 { font-size: var(--t-h2); line-height: 1.05; }
h3 { font-size: var(--t-h3); line-height: 1.15; }
h1 em, h2 em { font-style: italic; }
.lead { font-size: var(--t-lead); line-height: 1.5; font-weight: 300; max-width: 68ch; }
p { max-width: 68ch; }
.text-muted { color: var(--umber); }

/* ---------- Layout ---------- */
.container { max-width: var(--maxw); margin: 0 auto; padding-left: var(--margin); padding-right: var(--margin); }
.section { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.section--tight { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.section--ivory { background: var(--ivory); }
.grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.rule { border: 0; border-top: 1px solid var(--travertine); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  transition: transform 300ms var(--ease-quiet), background 300ms ease, box-shadow 300ms ease;
  background: transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--warm-white) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(42, 39, 36, 0.07);
}
.nav.is-hidden { transform: translateY(-100%); }
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 20px var(--margin);
  display: flex; align-items: center; justify-content: space-between;
}
/* Wordmark — matches the 2026 bold MODS logo: heavy grotesque, tight set */
.wordmark {
  font-family: var(--sans); font-weight: 800;
  letter-spacing: -0.035em; font-size: 1.5rem; color: var(--charcoal);
  line-height: 1; text-transform: uppercase;
}
.nav__links { display: flex; gap: clamp(20px, 3vw, 44px); align-items: center; }
.nav__links a {
  font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--charcoal);
  position: relative; padding: 12px 2px; /* 44px+ target with line-height */
}
.nav__links a::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 6px;
  border-bottom: 1px solid var(--bronze);
  transition: right 250ms var(--ease-quiet);
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { right: 0; }
.nav__links a[aria-current="page"] { color: var(--bronze); }

/* Mobile menu */
.nav__toggle { display: none; }
@media (max-width: 900px) {
  .nav__links {
    position: fixed; inset: 0; z-index: 90;
    background: var(--ivory);
    flex-direction: column; justify-content: center; align-items: center; gap: 8px;
    opacity: 0; pointer-events: none;
    transition: opacity 300ms var(--ease-quiet);
  }
  .nav__links.is-open { opacity: 1; pointer-events: auto; }
  /* while the menu is open, drop the bar's transform + backdrop-filter so the
     fixed full-screen overlay is positioned against the viewport, not the bar */
  .nav.is-menu-open { transform: none !important; background: transparent;
    box-shadow: none; backdrop-filter: none; -webkit-backdrop-filter: none; }
  /* keep menu items dark on the ivory overlay even when the page has a dark hero */
  body.ed .nav:not(.is-scrolled) .nav__links.is-open a,
  .nav__links a { color: var(--charcoal); text-shadow: none; }
  .nav__links a { font-family: var(--serif); font-size: 2rem; text-transform: none; letter-spacing: 0; padding: 10px 4px; }
  .nav__links a::after { display: none; }
  .nav__toggle {
    display: block; z-index: 100; position: relative;
    width: 44px; height: 44px; min-height: 44px;
    font-size: var(--t-meta); letter-spacing: 0.08em; text-transform: uppercase; font-weight: 500;
  }
}

/* ---------- Hero ---------- */
.hero { min-height: 92svh; display: flex; flex-direction: column; justify-content: flex-end; position: relative; }
.hero--home { padding-bottom: var(--space-md); }
.hero__kicker { margin-bottom: 20px; }
.hero h1 { max-width: 12ch; }
.hero__intro { margin-top: 28px; display: flex; gap: 40px; align-items: flex-end; flex-wrap: wrap; }

/* ---------- Images ---------- */
.frame {
  position: relative; overflow: hidden; background: var(--stone);
}
.frame img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 700ms var(--ease-quiet);
}
a:hover .frame img, .frame a:hover img { transform: scale(1.03); }
.frame--16x10 { aspect-ratio: 16 / 10; }
.frame--4x3   { aspect-ratio: 4 / 3; }
.frame--3x4   { aspect-ratio: 3 / 4; }
.frame--21x9  { aspect-ratio: 21 / 9; }
.frame--1x1   { aspect-ratio: 1 / 1; }
.frame.img-missing::after {
  content: attr(data-alt);
  position: absolute; inset: 0; display: flex; align-items: flex-end;
  padding: 20px; font-size: var(--t-meta); letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--umber);
  background: linear-gradient(160deg, var(--stone), var(--travertine));
}
.caption { margin-top: 10px; font-size: var(--t-meta); letter-spacing: 0.06em; color: var(--umber); }

/* Full bleed */
.bleed { width: 100vw; margin-left: calc(50% - 50vw); }

/* ---------- Reveal animations (scoped to html.js — page degrades gracefully without JS) ---------- */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 600ms var(--ease-quiet), transform 600ms var(--ease-quiet); }
.js .reveal.in-view { opacity: 1; transform: none; }
.js .reveal-img { clip-path: inset(0 0 100% 0); transition: clip-path 900ms var(--ease-drift); }
.js .reveal-img.in-view { clip-path: inset(0 0 0% 0); }
.reveal-line { display: block; overflow: hidden; }
.js .reveal-line > span { display: block; transform: translateY(110%); transition: transform 700ms var(--ease-quiet); }
.js .in-view .reveal-line > span { transform: none; }
.js .reveal-line:nth-child(2) > span { transition-delay: 70ms; }
.js .reveal-line:nth-child(3) > span { transition-delay: 140ms; }
.js [data-stagger] > * { opacity: 0; transform: translateY(18px); transition: opacity 550ms var(--ease-quiet), transform 550ms var(--ease-quiet); }
.js [data-stagger].in-view > * { opacity: 1; transform: none; }
.js [data-stagger].in-view > *:nth-child(2) { transition-delay: 60ms; }
.js [data-stagger].in-view > *:nth-child(3) { transition-delay: 120ms; }
.js [data-stagger].in-view > *:nth-child(4) { transition-delay: 180ms; }
.js [data-stagger].in-view > *:nth-child(5) { transition-delay: 240ms; }
.js [data-stagger].in-view > *:nth-child(6) { transition-delay: 300ms; }

/* ---------- Links & buttons ---------- */
.link {
  position: relative; display: inline-block; padding-bottom: 2px;
  font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--charcoal); cursor: pointer;
}
.link::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 0;
  border-bottom: 1px solid var(--bronze);
  transition: right 250ms var(--ease-quiet);
}
.link:hover::after { right: 0; }
.link .arrow { display: inline-block; transition: transform 250ms var(--ease-quiet); margin-left: 6px; }
.link:hover .arrow { transform: translateX(4px); }

.btn {
  display: inline-block; padding: 14px 32px; min-height: 44px;
  border: 1px solid var(--charcoal); border-radius: 999px;
  font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--charcoal); cursor: pointer;
  transition: background 250ms ease, color 250ms ease, transform 160ms var(--ease-quiet);
}
.btn:hover { background: var(--charcoal); color: var(--warm-white); }
.btn:active { transform: scale(0.97); }
.btn--light { border-color: var(--warm-white); color: var(--warm-white); }
.btn--light:hover { background: var(--warm-white); color: var(--ink); }

/* ---------- Project cards ---------- */
.cards { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; row-gap: var(--space-lg); }
.card { grid-column: span 6; cursor: pointer; }
.card--third { grid-column: span 4; }
.card--offset { margin-top: var(--space-lg); }
.card .meta { margin-top: 14px; display: flex; gap: 14px; }
.card h3 { margin-top: 6px; transition: color 250ms ease; }
.card:hover h3 { color: var(--bronze); }
@media (max-width: 820px) {
  .card, .card--third { grid-column: span 12; }
  .card--offset { margin-top: 0; }
}

/* Filters */
.filters { display: flex; gap: 24px; flex-wrap: wrap; }
.filters button {
  font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--umber); padding: 10px 2px; position: relative; cursor: pointer;
  transition: color 250ms ease;
}
.filters button::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: 4px;
  border-bottom: 1px solid var(--bronze); transition: right 250ms var(--ease-quiet);
}
.filters button:hover { color: var(--charcoal); }
.filters button[aria-pressed="true"] { color: var(--bronze); }
.filters button[aria-pressed="true"]::after { right: 0; }
.card.is-filtered-out { display: none; }

/* ---------- Data block (project pages) ---------- */
.data { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 0 32px; border-top: 1px solid var(--travertine); }
.data > div { padding: 20px 0; border-bottom: 1px solid var(--travertine); }
.data dt { font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--umber); margin-bottom: 6px; }
.data dd { font-size: 1rem; }

/* ---------- Process strip ---------- */
.steps { counter-reset: step; }
.steps li { display: grid; grid-template-columns: 80px 1fr 2fr; gap: 24px; padding: 28px 0; border-top: 1px solid var(--travertine); }
.steps li::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--serif); font-size: 1.5rem; color: var(--travertine);
}
.steps h3 { font-size: 1.375rem; }
@media (max-width: 820px) { .steps li { grid-template-columns: 48px 1fr; } .steps li p { grid-column: 2; } }
@media (max-width: 820px) { .grid > figure { grid-column: 1 / -1 !important; } .grid > p.meta { grid-column: 1 / -1 !important; } }

/* ---------- Quote ---------- */
.quote { font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2.5rem); line-height: 1.3; max-width: 24ch; }
.quote footer { margin-top: 24px; }

/* ---------- Forms ---------- */
.form { display: grid; gap: 36px; max-width: 640px; }
.field { position: relative; }
.field input, .field textarea, .field select {
  width: 100%; background: transparent; border: 0; border-bottom: 1px solid var(--travertine);
  padding: 10px 0; font: inherit; color: var(--charcoal); border-radius: 0;
  transition: border-color 250ms ease;
}
.field textarea { min-height: 120px; resize: vertical; }
.field label { display: block; font-size: var(--t-meta); font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--umber); margin-bottom: 4px; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-bottom: 2px solid var(--bronze); }

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: var(--warm-white); position: relative; overflow: hidden; }
.footer__cta { padding: var(--space-xl) 0 var(--space-lg); }
.footer__cta h2 { color: var(--warm-white); max-width: 14ch; }
.footer__grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  padding-bottom: var(--space-lg); font-size: 0.9375rem;
}
.footer__grid .meta { color: var(--travertine); margin-bottom: 14px; }
.footer a { transition: color 250ms ease; }
.footer a:hover { color: var(--bronze); }
.footer__base {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 24px 0 40px; border-top: 1px solid rgba(250, 248, 244, 0.14);
  font-size: var(--t-meta); letter-spacing: 0.06em; color: var(--travertine);
}
.footer__watermark {
  position: absolute; bottom: -0.18em; left: 50%; transform: translateX(-50%);
  font-family: var(--sans); font-weight: 800; letter-spacing: -0.035em;
  font-size: clamp(6rem, 22vw, 20rem); line-height: 1; color: rgba(250, 248, 244, 0.05);
  pointer-events: none; user-select: none; white-space: nowrap;
}
@media (max-width: 820px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .footer__grid { grid-template-columns: 1fr; gap: 26px; } }

/* ---------- Editorial split ---------- */
.split { display: grid; grid-template-columns: 5fr 6fr; gap: clamp(32px, 6vw, 96px); align-items: start; }
.split--rev { grid-template-columns: 6fr 5fr; }
.sticky { position: sticky; top: 120px; }
@media (max-width: 820px) { .split, .split--rev { grid-template-columns: 1fr; } .sticky { position: static; } }

/* ---------- Next project ---------- */
.next-project { display: block; }
.next-project .frame { max-height: 60vh; }

/* ---------- Marquee locations ---------- */
.strip { display: flex; gap: 16px; flex-wrap: wrap; align-items: baseline; }
.strip .dot { color: var(--bronze); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, [data-stagger] > * { transform: none; transition: opacity 200ms ease; }
  .reveal-img { clip-path: none; transition: opacity 200ms ease; opacity: 0; }
  .reveal-img.in-view { opacity: 1; }
  .reveal-line > span { transform: none; transition: none; }
  .frame img { transition: none; }
  [data-parallax] { transform: none !important; }
}

/* ---------- Touch: no hover zoom ---------- */
@media (hover: none) {
  a:hover .frame img, .frame a:hover img { transform: none; }
}