/* SpatialOpts design system: Swiss Architectural Editorial. See DESIGN.md and the Brand Book. */
:root {
  --neutral-100: #F4F4F4; --neutral-700: #484845;
  --taupe-300: #D8D1C3; --taupe-400: #BCB4A4;
  --charcoal-500: #535251; --charcoal-700: #1A1A19; --charcoal-800: #090908;
  --blue-400: #4FA8C0; --blue-500: #077EA1; --blue-600: #066B89;
  --teal-500: #4EA4A2; --teal-600: #438C8A; --teal-700: #377472;

  --bg: var(--neutral-100);
  --bg-alt: var(--taupe-300);
  --fg: var(--charcoal-800);
  --fg-soft: var(--neutral-700);
  --rule: rgba(9, 9, 8, 0.28);
  --num: var(--blue-600);
  --focus: var(--blue-500);

  --dark-bg: var(--charcoal-800);
  --dark-fg: var(--neutral-100);
  --dark-soft: rgba(244, 244, 244, 0.72);
  --dark-rule: rgba(244, 244, 244, 0.28);

  --font-display: "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --font-body: "Poppins", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --hairline: 0.5px;
  --gutter: clamp(16px, 5vw, 64px);
  --max: 1200px;
  --section-y: clamp(64px, 9vw, 128px);
  --gap: clamp(12px, 2vw, 24px);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: var(--charcoal-800); --bg-alt: var(--charcoal-700); --fg: var(--neutral-100); --fg-soft: var(--taupe-400);
    --rule: rgba(244, 244, 244, 0.28); --num: var(--blue-400); --focus: var(--blue-400);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-weight: 300; font-size: 1rem; line-height: 1.65;
}
a { color: inherit; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
.hero :focus-visible, .book :focus-visible, .site-head :focus-visible, footer :focus-visible { outline-color: var(--blue-400); }
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }

h1, h2, h3 { font-family: var(--font-display); margin: 0; text-wrap: balance; }
h1, h2, h3 { font-weight: 600; line-height: 1.02; letter-spacing: -0.01em; }
h2 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h3 { font-size: clamp(1.7rem, 3vw, 2.3rem); line-height: 1.1; }

/* Small labels and editorial numbering */
.eyebrow, .meta, .num {
  font-family: var(--font-body); font-size: 11px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; line-height: 1.4;
}
.eyebrow { margin: 0 0 20px; color: var(--fg-soft); }
.num { color: var(--num); }
.hero .eyebrow, .book .eyebrow { color: var(--dark-soft); }
.hero .num, .book .num { color: var(--blue-400); }
.meta { color: var(--fg-soft); }

.em { color: var(--blue-400); }

/* Buttons: rectangular, olive fill, charcoal label */
.btn {
  display: inline-flex; align-items: center; gap: 12px; padding: 16px 26px; border: 0; border-radius: 0;
  font-family: var(--font-body); font-size: 12px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; line-height: 1;
  text-decoration: none; transition: background 0.2s ease;
}
.btn-action { background: var(--teal-500); color: var(--charcoal-800); }
.btn-action:hover, .btn-action:active { background: var(--teal-600); }
.btn-line { box-shadow: inset 0 0 0 1px var(--dark-rule); color: var(--dark-fg); }
.btn-line:hover { box-shadow: inset 0 0 0 1px var(--dark-fg); }
.arrow { display: inline-block; transition: transform 0.2s ease; }
a:hover > .arrow, .btn:hover .arrow { transform: translateX(4px); }

/* Crop marks: four corner ticks that suggest construction and precision */
.crop { position: relative; }
.crop::after {
  content: ""; position: absolute; inset: clamp(14px, 2vw, 28px); pointer-events: none; --m: rgba(244, 244, 244, 0.4);
  background:
    linear-gradient(var(--m), var(--m)) top left / 18px 1px no-repeat, linear-gradient(var(--m), var(--m)) top left / 1px 18px no-repeat,
    linear-gradient(var(--m), var(--m)) top right / 18px 1px no-repeat, linear-gradient(var(--m), var(--m)) top right / 1px 18px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom left / 18px 1px no-repeat, linear-gradient(var(--m), var(--m)) bottom left / 1px 18px no-repeat,
    linear-gradient(var(--m), var(--m)) bottom right / 18px 1px no-repeat, linear-gradient(var(--m), var(--m)) bottom right / 1px 18px no-repeat;
}

/* Brand */
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { display: block; height: 56px; width: auto; }
.nav { display: flex; gap: 28px; flex-wrap: wrap; }
.nav a {
  font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; text-decoration: none; color: var(--dark-soft);
  padding-block: 12px; border-bottom: var(--hairline) solid transparent;
}
.nav a:hover { color: var(--dark-fg); border-bottom-color: var(--dark-fg); }

/* Hero */
.hero { position: relative; background: var(--dark-bg); color: var(--dark-fg); overflow: hidden; }
.hero canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.hero-inner { position: relative; padding-block: clamp(24px, 4vw, 40px) clamp(72px, 12vw, 148px); }
.brand-row { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; margin-bottom: clamp(72px, 13vw, 168px); }
.hero h1 { font-size: clamp(2.1rem, 4.8vw, 3.9rem); max-width: 24ch; }
.hero .lede { max-width: 30rem; margin: 28px 0 40px; color: var(--dark-soft); }
.entry { display: flex; gap: 14px; flex-wrap: wrap; }

/* Section head: body left, headline sculpted to the right */
.section-head { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); row-gap: 24px; align-items: end; margin-bottom: clamp(40px, 6vw, 72px); }
.section-head .sh-body { grid-column: 1 / span 4; margin: 0; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.5; }
.section-head .sh-title { grid-column: 5 / -1; text-align: right; }
.section-head .sh-title .eyebrow { margin-bottom: 16px; }
.section-head h2 { margin-left: auto; max-width: 20ch; }

/* Work: hero tile, rows of three, closing pair */
.work { padding-block: var(--section-y); }
.grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: clamp(24px, 3vw, 40px) var(--gap); }
.tile { grid-column: span 2; margin: 0; min-width: 0; }
.tile--wide { grid-column: 1 / -1; }
.tile--half { grid-column: span 3; }
.tile img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 0; background: var(--bg-alt); }
.tile--wide img { aspect-ratio: 21 / 9; object-position: center 62%; }
.tile figcaption {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-top: 12px; padding-top: 12px;
  border-top: var(--hairline) solid var(--rule); font-size: 13px;
}
.tile figcaption .meta { font-size: 11px; letter-spacing: 0.16em; }
.tile figcaption .cap { display: flex; gap: 14px; align-items: baseline; }

/* Specialties */
.specialties { background: var(--bg-alt); padding-block: var(--section-y); }
.stages { margin: 0; padding: 0; list-style: none; }
.stage {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); row-gap: 16px;
  padding-block: 32px; border-top: var(--hairline) solid var(--rule);
}
.stage:last-child { border-bottom: var(--hairline) solid var(--rule); }
.stage > .eyebrow { grid-column: 1 / span 3; margin: 6px 0 0; }
.stage-title { grid-column: 4 / span 4; }
.stage-title .meta { margin: 12px 0 0; }
.stage-body { grid-column: 9 / -1; }
.stage-body p { margin: 0 0 16px; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.6; letter-spacing: 0.01em; }
.stage-body a {
  display: inline-block; padding-block: 12px 4px; font-size: 11px; font-weight: 500; letter-spacing: 0.2em; text-transform: uppercase; text-decoration: none;
  border-bottom: var(--hairline) solid var(--fg);
}
.stage-body a:hover { border-bottom-color: var(--teal-700); color: var(--teal-700); }

.make { padding-block: var(--section-y); }
/* Book */
.book { background: var(--dark-bg); color: var(--dark-fg); padding-block: clamp(80px, 12vw, 160px); }
.book .wrap { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); row-gap: 28px; }
.book .eyebrow, .book .btn, .book .mail { grid-column: 1 / -1; }
.book h2 { grid-column: 4 / -1; text-align: right; margin-left: auto; max-width: 14ch; }
.book .btn { justify-self: end; }
.book .mail { justify-self: end; margin: 0; font-size: 0.875rem; font-weight: 300; color: var(--dark-soft); }

footer { background: var(--dark-bg); color: var(--dark-soft); border-top: var(--hairline) solid var(--dark-rule); }
footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-block: 24px; }
footer .brand img { height: 40px; }
footer p { margin: 0; font-size: 0.875rem; font-weight: 300; }

/* Inner pages */
.site-head { background: var(--dark-bg); color: var(--dark-fg); }
.site-head .wrap { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; padding-block: 24px; }
.page-intro { padding-block: clamp(56px, 9vw, 112px) clamp(32px, 5vw, 56px); }
.page-intro .wrap { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); row-gap: 24px; align-items: end; }
.page-intro .pi-body { grid-column: 1 / span 4; }
.page-intro .pi-body .eyebrow { margin-bottom: 16px; }
.page-intro .lede { margin: 0; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.5; }
.page-intro h1 { font-size: clamp(2.8rem, 7vw, 5.2rem); grid-column: 5 / -1; text-align: right; margin-left: auto; max-width: 14ch; }
.gallery { padding-bottom: var(--section-y); }
.hint { margin: 40px 0 0; max-width: 34rem; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; }

/* Approach */
.approach { padding-block: var(--section-y); }
.approach .wrap { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gap); row-gap: 40px; align-items: end; }
.approach h2 { grid-column: 1 / span 7; max-width: 18ch; font-size: clamp(2rem, 4.5vw, 3.4rem); }
.approach-body { grid-column: 9 / -1; }
.approach-body p:not(.eyebrow) { margin: 0 0 16px; font-size: 0.875rem; font-weight: 300; line-height: 1.6; letter-spacing: 0.01em; }
.tile .note { margin: 8px 0 0; max-width: 42ch; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.5; letter-spacing: 0.01em; }
.book .book-body { grid-column: 8 / -1; margin: 0; color: var(--dark-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.6; }
@media (max-width: 820px) {
  .approach h2, .approach-body, .book .book-body { grid-column: 1 / -1; }
}
@media (max-width: 820px) {
  .section-head .sh-body, .section-head .sh-title, .page-intro .pi-body, .page-intro h1 { grid-column: 1 / -1; }
  .section-head .sh-title, .page-intro h1 { text-align: left; margin-left: 0; order: -1; }
  .section-head h2 { margin-left: 0; }
  .book h2 { grid-column: 1 / -1; text-align: left; margin-left: 0; }
  .book .btn, .book .mail { justify-self: start; }
  .tile { grid-column: span 3; }
  .tile--wide { grid-column: 1 / -1; }
  .stage > .eyebrow, .stage-title, .stage-body { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
  .tile, .tile--half { grid-column: 1 / -1; }
  .tile--wide img { aspect-ratio: 4 / 3; }
  .nav { gap: 18px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .arrow, .btn { transition: none; }
}

/* Approach pillars: craft, precision, scale */
.pillars { grid-column: 1 / -1; margin: 0; padding: 0; list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.pillars li { border-top: var(--hairline) solid var(--rule); padding-top: 20px; }
.pillars h3 { margin: 12px 0 8px; }
.pillars p { margin: 0; color: var(--fg-soft); font-size: 0.875rem; font-weight: 300; line-height: 1.5; letter-spacing: 0.01em; max-width: 30ch; }

/* Scroll reveal: short fade and rise, no bounce */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (max-width: 820px) { .pillars { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; transition: none; } }
/* Hybrid model: AI workflows, creative direction (the bridge), custom 3D */
.pillars .bridge { border-top-color: var(--blue-500); }
.makegroups { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--gap); }
.makegroup ul { margin: 0; padding: 0; list-style: none; }
.makegroup .eyebrow { margin-bottom: 12px; }
.makegroup li { padding-block: 14px; border-top: var(--hairline) solid var(--rule); font-family: var(--font-display); font-size: clamp(1.3rem, 2vw, 1.6rem); font-weight: 600; line-height: 1.15; }
@media (max-width: 820px) { .makegroups { grid-template-columns: 1fr; gap: 32px; } }