/* ==========================================================================
   EDIFICE — Design System
   The interface itself is drawn like a construction document: thin rules,
   coordinate marks, technical labels, restrained motion.
   ========================================================================== */

:root {
  /* Palette */
  --ivory: #f4f1ea;
  --ivory-dim: #ece7db;
  --near-black: #17140f;
  --charcoal: #2a2620;
  --graphite: #4a453c;
  --concrete: #8c877c;
  --stone: #c9c3b5;
  --stone-line: #d8d3c5;
  --terracotta: #b0522f;
  --terracotta-dim: #8a3f24;
  --white: #fffdf8;

  /* Type */
  --font-display: "Fraunces", ui-serif, Georgia, serif;
  --font-body: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --font-nav: "IBM Plex Sans Condensed", var(--font-body);

  /* Scale */
  --display-xl: clamp(3.2rem, 8vw, 8rem);
  --display-l: clamp(2.4rem, 5.5vw, 5rem);
  --display-m: clamp(1.8rem, 3.4vw, 3rem);
  --section-heading: clamp(1.1rem, 1.6vw, 1.4rem);
  --body-l: 1.2rem;
  --body: 1rem;
  --caption: 0.82rem;
  --metadata: 0.72rem;

  /* Rhythm */
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --rule: 1px;
  --radius: 2px;
  --max-w: 1400px;

  --ease-draw: cubic-bezier(0.65, 0, 0.15, 1);
  --dur-fast: 220ms;
  --dur-med: 480ms;
  --dur-slow: 900ms;

  color-scheme: light;
}

@media (prefers-reduced-motion: reduce) {
  :root { --dur-fast: 1ms; --dur-med: 1ms; --dur-slow: 1ms; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--near-black);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Global architectural grid backdrop -------------------------------------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(90deg, rgba(42,38,32,0.045) 1px, transparent 1px),
    linear-gradient(rgba(42,38,32,0.045) 1px, transparent 1px);
  background-size: 8.333% 100%, 100% 64px;
  opacity: 0.6;
}
body.drawing-mode::before { opacity: 1; }

main, header, footer { position: relative; z-index: 1; }

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 1000;
  background: var(--near-black); color: var(--ivory); padding: 0.75rem 1.25rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

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

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 400; margin: 0; line-height: 1.05; letter-spacing: -0.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: clamp(3rem, 8vw, 7rem) 0; }
.section-tight { padding: clamp(2rem, 5vw, 3.5rem) 0; }
.rule { border: none; border-top: var(--rule) solid var(--stone-line); margin: 0; }
.rule-strong { border-top: var(--rule) solid var(--graphite); }

/* Typography utility classes ---------------------------------------------- */
.display-xl { font-size: var(--display-xl); font-family: var(--font-display); line-height: 0.98; }
.display-l { font-size: var(--display-l); font-family: var(--font-display); }
.display-m { font-size: var(--display-m); font-family: var(--font-display); }
.section-heading { font-family: var(--font-nav); font-size: var(--section-heading); letter-spacing: 0.08em; text-transform: uppercase; color: var(--graphite); font-weight: 600; }
.body-l { font-size: var(--body-l); }
.caption { font-size: var(--caption); color: var(--graphite); }
.metadata, .svg-label, .svg-label-sm { font-family: var(--font-mono); font-size: var(--metadata); letter-spacing: 0.03em; color: var(--graphite); text-transform: uppercase; }
.eyebrow { font-family: var(--font-nav); font-size: var(--metadata); letter-spacing: 0.14em; text-transform: uppercase; color: var(--terracotta); font-weight: 600; }
.italic-serif { font-family: var(--font-display); font-style: italic; }

/* Meta line ----------------------------------------------------------------*/
.meta-line { display: flex; flex-wrap: wrap; gap: clamp(1rem, 3vw, 2.5rem); }
.meta-item { display: flex; flex-direction: column; gap: 0.25rem; }
.meta-key { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); text-transform: uppercase; letter-spacing: 0.06em; }
.meta-value { font-family: var(--font-mono); font-size: 0.92rem; color: var(--near-black); }

/* Breadcrumb ---------------------------------------------------------------*/
.breadcrumb ol { display: flex; gap: 0.5rem; flex-wrap: wrap; font-family: var(--font-mono); font-size: var(--metadata); text-transform: uppercase; color: var(--concrete); }
.breadcrumb a:hover { color: var(--terracotta); }
.crumb-sep { color: var(--stone); }

/* Buttons ------------------------------------------------------------------*/
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-nav); font-weight: 600; font-size: 0.82rem;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.9rem 1.6rem; border: 1px solid var(--near-black);
  background: transparent; color: var(--near-black);
  transition: background var(--dur-fast) var(--ease-draw), color var(--dur-fast) var(--ease-draw), border-color var(--dur-fast) var(--ease-draw), transform var(--dur-fast) var(--ease-draw);
  border-radius: var(--radius);
}
.btn:hover { background: var(--near-black); color: var(--ivory); transform: translateY(-1px); }
.btn-primary { background: var(--near-black); color: var(--ivory); }
.btn-primary:hover { background: var(--terracotta); border-color: var(--terracotta); color: var(--white); }
.btn-outline { border-color: var(--graphite); }
.btn-small { padding: 0.6rem 1.1rem; font-size: 0.72rem; }
.btn-large { padding: 1.15rem 2.2rem; font-size: 0.86rem; }
.btn-text { border: none; padding: 0.2rem 0; border-bottom: 1px solid var(--near-black); border-radius: 0; }
.btn-text:hover { background: none; color: var(--terracotta); border-color: var(--terracotta); transform: none; }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; }
.btn[disabled]:hover { background: transparent; color: var(--near-black); transform: none; }

/* Header ---------------------------------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-fast) var(--ease-draw), border-color var(--dur-fast) var(--ease-draw), backdrop-filter var(--dur-fast) var(--ease-draw);
}
.site-header[data-scrolled="true"] {
  background: rgba(244,241,234,0.92);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--stone-line);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 1.1rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}
.wordmark { font-family: var(--font-display); font-size: 1.3rem; letter-spacing: 0.02em; display: flex; }
.wordmark-mark { display: none; }
.primary-nav ul { display: flex; gap: clamp(1rem, 2vw, 2rem); }
.primary-nav a {
  font-family: var(--font-nav); font-size: 0.78rem; letter-spacing: 0.08em; font-weight: 600;
  position: relative; padding: 0.3rem 0;
}
.primary-nav a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1px; background: var(--terracotta);
  transition: right var(--dur-fast) var(--ease-draw);
}
.primary-nav a:hover::after, .primary-nav a.is-active::after { right: 0; }
.primary-nav a.is-active { color: var(--terracotta); }
.header-actions { display: flex; align-items: center; gap: 0.8rem; }
.icon-btn { background: none; border: none; padding: 0.4rem; color: var(--near-black); display: flex; }
.header-cta { display: inline-flex; }
.menu-trigger { display: none; }
.menu-trigger-lines { display: block; width: 20px; height: 14px; position: relative; }
.menu-trigger-lines span { position: absolute; left: 0; right: 0; height: 1px; background: currentColor; transition: transform var(--dur-fast) var(--ease-draw), opacity var(--dur-fast); }
.menu-trigger-lines span:first-child { top: 0; }
.menu-trigger-lines span:last-child { bottom: 0; }
.menu-trigger[aria-expanded="true"] .menu-trigger-lines span:first-child { transform: translateY(6.5px) rotate(45deg); }
.menu-trigger[aria-expanded="true"] .menu-trigger-lines span:last-child { transform: translateY(-6.5px) rotate(-45deg); }

@media (max-width: 900px) {
  .primary-nav, .header-cta, #search-trigger { display: none; }
  .menu-trigger { display: flex; }
  .wordmark-mark { display: inline; }
  .wordmark-full { display: none; }
}

/* Mobile menu ------------------------------------------------------------ */
.mobile-menu {
  position: fixed; inset: 0; z-index: 200; background: var(--near-black); color: var(--ivory);
  transform: translateY(-100%); transition: transform var(--dur-med) var(--ease-draw);
  display: flex; align-items: center;
}
.mobile-menu.is-open { transform: translateY(0); }
.mobile-menu-inner { padding: 6rem var(--gutter) 3rem; width: 100%; }
.mobile-menu nav li { opacity: 0; transform: translateY(14px); transition: opacity var(--dur-med) var(--ease-draw), transform var(--dur-med) var(--ease-draw); transition-delay: calc(var(--i) * 45ms); }
.mobile-menu.is-open nav li { opacity: 1; transform: translateY(0); }
.mobile-menu nav a { font-family: var(--font-display); font-size: clamp(2rem, 8vw, 3rem); display: inline-block; padding: 0.3rem 0; }
.mobile-menu nav a:hover { color: var(--terracotta); }
.mobile-menu .btn { margin-top: 2rem; border-color: var(--ivory); color: var(--ivory); }
.mobile-menu .btn:hover { background: var(--terracotta); border-color: var(--terracotta); }
.mobile-menu-meta { margin-top: 3rem; display: flex; gap: 2rem; font-family: var(--font-mono); font-size: var(--metadata); color: var(--stone); text-transform: uppercase; }

/* Search overlay ----------------------------------------------------------*/
.search-overlay {
  position: fixed; inset: 0; z-index: 300; background: rgba(23,20,15,0.96);
  opacity: 0; visibility: hidden; transition: opacity var(--dur-fast) var(--ease-draw);
  display: flex; align-items: flex-start; justify-content: center;
}
.search-overlay.is-open { opacity: 1; visibility: visible; }
.search-overlay-inner { width: min(720px, 90vw); margin-top: min(14vh, 140px); }
.search-field { display: flex; align-items: center; gap: 0.75rem; border-bottom: 1px solid var(--stone); padding-bottom: 1rem; color: var(--ivory); }
.search-field input { background: none; border: none; color: var(--ivory); font-size: 1.4rem; font-family: var(--font-display); flex: 1; outline: none; }
.search-field input::placeholder { color: var(--concrete); }
#search-close { background: none; border: 1px solid var(--concrete); color: var(--stone); font-family: var(--font-mono); font-size: 0.7rem; padding: 0.3rem 0.5rem; }
.search-results { margin-top: 1.5rem; max-height: 55vh; overflow-y: auto; }
.search-result { display: flex; justify-content: space-between; gap: 1rem; padding: 0.9rem 0; border-bottom: 1px solid rgba(255,255,255,0.08); color: var(--ivory); }
.search-result:hover { color: var(--terracotta); }
.search-result-type { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); text-transform: uppercase; white-space: nowrap; }
.search-empty { color: var(--concrete); font-family: var(--font-mono); font-size: 0.85rem; padding: 1rem 0; }

/* Page transition ----------------------------------------------------------*/
.page-transition {
  position: fixed; inset: 0; z-index: 400; background: var(--near-black); color: var(--ivory);
  display: flex; align-items: center; justify-content: center; flex-direction: column; gap: 0.75rem;
  transform: translateY(100%); pointer-events: none;
}
.page-transition.is-active { transform: translateY(0); transition: transform var(--dur-med) var(--ease-draw); pointer-events: all; }
.page-transition.is-leaving { transform: translateY(-100%); transition: transform var(--dur-med) var(--ease-draw); }
.page-transition-word { font-family: var(--font-display); font-size: clamp(1.8rem, 5vw, 3rem); letter-spacing: 0.05em; }
.page-transition-code { font-family: var(--font-mono); font-size: var(--metadata); letter-spacing: 0.1em; color: var(--terracotta); }
.page-transition-lines { width: 200px; height: 4px; }
.page-transition-lines line { stroke: var(--stone); stroke-width: 1; stroke-dasharray: 400; stroke-dashoffset: 400; }
.page-transition.is-active .page-transition-lines line { stroke-dashoffset: 0; transition: stroke-dashoffset var(--dur-slow) var(--ease-draw); }

/* Architectural drawing base ------------------------------------------------*/
.architectural-drawing { width: 100%; height: auto; overflow: visible; }
.architectural-drawing .svg-label { fill: var(--graphite); font-size: 9px; }
.architectural-drawing .svg-label-sm { fill: var(--concrete); font-size: 7.5px; }
.plan-grid-line { stroke: var(--stone-line); stroke-width: 1; }
.plan-outline { fill: none; stroke: var(--near-black); stroke-width: 1.4; }
.plan-outline rect { fill: none; stroke: var(--near-black); stroke-width: 1.4; }
.plan-room { fill: rgba(176,82,47,0.05); stroke: var(--graphite); stroke-width: 1; transition: fill var(--dur-fast) var(--ease-draw), stroke var(--dur-fast); cursor: pointer; }
.plan-room:hover, .plan-room.is-active { fill: rgba(176,82,47,0.18); stroke: var(--terracotta); }
.plan-room-label, .plan-room-area { pointer-events: none; }
.plan-circulation { stroke: var(--terracotta); stroke-width: 1.4; stroke-dasharray: 4 3; opacity: 0.8; }
.plan-light { fill: rgba(232,201,120,0.18); stroke: none; }
.plan-column { fill: var(--near-black); }
.dim-string line { stroke: var(--graphite); stroke-width: 0.8; }
.dim-string circle { fill: var(--graphite); }
.grid-bubble circle { fill: var(--ivory); stroke: var(--graphite); stroke-width: 1; }
.north-arrow line, .north-arrow polygon { stroke: var(--near-black); fill: var(--near-black); }
.level-marker line, .level-marker polygon { stroke: var(--graphite); fill: var(--graphite); }
.scale-indicator line { stroke: var(--graphite); stroke-width: 1; }
.section-mass { fill: var(--stone); stroke: var(--near-black); stroke-width: 1.2; }
.section-floor-line { stroke: var(--graphite); stroke-width: 0.8; stroke-dasharray: 3 2; }
.section-ground { stroke: var(--near-black); stroke-width: 1.6; }
.section-hatch { stroke: var(--graphite); stroke-width: 0.8; }
.elevation-outline { fill: none; stroke: var(--near-black); stroke-width: 1.4; }
.elevation-opening { fill: var(--ivory); stroke: var(--graphite); stroke-width: 1; }
.axo-face { stroke: var(--near-black); stroke-width: 0.8; transition: opacity var(--dur-fast); }
.axo-face-top { fill: var(--stone); }
.axo-face-left { fill: var(--concrete); opacity: 0.85; }
.axo-face-right { fill: var(--graphite); opacity: 0.7; }
.axo-volume { transition: transform var(--dur-med) var(--ease-draw); }
.thumb-shape { fill: var(--stone); stroke: var(--graphite); stroke-width: 1; opacity: 0; animation: drawIn var(--dur-med) var(--ease-draw) forwards; }
.thumb-ground { stroke: var(--stone-line); }
.topic-circle { fill: none; stroke: var(--terracotta); stroke-width: 1.2; }
.topic-line { stroke: var(--graphite); stroke-width: 0.8; opacity: 0; stroke-dasharray: 400; stroke-dashoffset: 400; animation: drawLine var(--dur-slow) var(--ease-draw) forwards; }
.waveform-bar { fill: var(--concrete); opacity: 0; animation: drawIn var(--dur-fast) var(--ease-draw) forwards; }
.coord-point circle { fill: var(--terracotta); }
.coord-leader { stroke: var(--graphite); stroke-width: 0.8; }
.hero-axis { stroke: var(--terracotta); stroke-width: 0.6; opacity: 0.5; }

@keyframes drawIn { from { opacity: 0; transform: scaleY(0.6); } to { opacity: 1; transform: scaleY(1); } }
@keyframes drawLine { to { opacity: 0.7; stroke-dashoffset: 0; } }

/* Hero ---------------------------------------------------------------------*/
.hero {
  min-height: calc(100vh - 70px);
  display: flex; flex-direction: column; justify-content: center;
  padding: 4rem var(--gutter) 3rem;
  max-width: var(--max-w); margin: 0 auto;
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.hero-headline { font-family: var(--font-display); font-size: var(--display-xl); line-height: 0.95; }
.hero-headline .accent { color: var(--terracotta); font-style: italic; }
.hero-statement { max-width: 34ch; margin-top: 1.5rem; font-size: var(--body-l); color: var(--graphite); }
.hero-meta { margin-top: 2.5rem; }
.hero-ctas { margin-top: 2.5rem; display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-plan { animation: none; }
.hero-reveal-axes, .hero-reveal-lines, .hero-reveal-labels { opacity: 0; transition: opacity var(--dur-slow) var(--ease-draw); }
.hero-reveal-axes.is-visible { opacity: 1; }
.hero-reveal-lines.is-visible { opacity: 1; transition-delay: 250ms; }
.hero-reveal-labels.is-visible { opacity: 1; transition-delay: 550ms; }
.scroll-cue {
  display: flex; align-items: center; gap: 0.6rem; margin-top: 3rem;
  font-family: var(--font-mono); font-size: var(--metadata); letter-spacing: 0.1em; color: var(--concrete);
}
.scroll-cue-arrow { animation: bob 2.2s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(5px); } }
@media (prefers-reduced-motion: reduce) { .scroll-cue-arrow { animation: none; } }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
}

/* Intro statement ------------------------------------------------------- */
.intro-statement { text-align: left; }
.intro-statement p { font-family: var(--font-display); font-size: clamp(1.6rem, 4vw, 3rem); max-width: 20ch; line-height: 1.15; }

/* Two column editorial ---------------------------------------------------*/
.editorial-split { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(2rem, 5vw, 5rem); }
@media (max-width: 860px) { .editorial-split { grid-template-columns: 1fr; } }

/* Stats --------------------------------------------------------------------*/
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.stat-item { border-left: 1px solid var(--stone-line); padding-left: 1.2rem; }
.stat-value { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3.6rem); }
.stat-label { font-family: var(--font-nav); font-size: var(--metadata); letter-spacing: 0.08em; text-transform: uppercase; color: var(--graphite); margin-top: 0.25rem; }
@media (max-width: 700px) { .stats-grid { grid-template-columns: repeat(2, 1fr); row-gap: 2rem; } }

/* Principles ---------------------------------------------------------------*/
.principles { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.principles-list { border-top: 1px solid var(--stone-line); }
.principle-item { display: flex; justify-content: space-between; align-items: baseline; padding: 1.1rem 0; border-bottom: 1px solid var(--stone-line); cursor: pointer; background: none; border-left: none; border-right: none; border-top: none; width: 100%; text-align: left; }
.principle-item span.principle-name { font-family: var(--font-display); font-size: clamp(1.3rem, 2.6vw, 1.9rem); }
.principle-item span.principle-note { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); }
.principle-item.is-active span.principle-name { color: var(--terracotta); }
.principle-detail { padding: 1.5rem; border: 1px solid var(--stone-line); min-height: 260px; display: flex; flex-direction: column; gap: 1rem; }
.principle-detail-diagram { max-width: 200px; margin: 0 auto; }
@media (max-width: 860px) { .principles { grid-template-columns: 1fr; } }

/* Cards & rows ---------------------------------------------------------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 3vw, 2.5rem); }
@media (max-width: 980px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }

.entry-card { display: flex; flex-direction: column; gap: 1rem; }
.entry-card-visual { border: 1px solid var(--stone-line); padding: 1rem; background: var(--ivory-dim); }
.entry-card-title { font-family: var(--font-display); font-size: 1.3rem; }
.entry-card:hover .entry-card-title { color: var(--terracotta); }
.entry-card-meta { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.index-row {
  display: grid; grid-template-columns: 90px 1fr auto auto; align-items: center; gap: 1.5rem;
  padding: 1.6rem 0; border-bottom: 1px solid var(--stone-line);
  transition: background var(--dur-fast);
  position: relative;
}
.index-row:hover { background: rgba(176,82,47,0.03); }
.index-row-code { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); }
.index-row-title { font-family: var(--font-display); font-size: clamp(1.3rem, 3vw, 2rem); }
.index-row:hover .index-row-title { color: var(--terracotta); }
.index-row-meta { font-family: var(--font-mono); font-size: var(--metadata); text-transform: uppercase; color: var(--graphite); text-align: right; }
.index-row-drawing { grid-column: 1 / -1; max-height: 0; overflow: hidden; transition: max-height var(--dur-med) var(--ease-draw); }
.index-row:hover .index-row-drawing, .index-row:focus-within .index-row-drawing { max-height: 260px; margin-top: 1rem; }
.index-row-drawing-inner { width: 280px; max-width: 100%; }
@media (max-width: 760px) {
  .index-row { grid-template-columns: 1fr; gap: 0.5rem; }
  .index-row-meta { text-align: left; }
}

/* Filters ------------------------------------------------------------------*/
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.6rem 0.5rem; align-items: center; }
.filter-group { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.filter-chip {
  font-family: var(--font-nav); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 0.5rem 0.9rem; border: 1px solid var(--stone-line); background: transparent; color: var(--graphite);
  border-radius: 999px; transition: all var(--dur-fast);
}
.filter-chip:hover { border-color: var(--near-black); }
.filter-chip.is-active { background: var(--near-black); border-color: var(--near-black); color: var(--ivory); }
.filter-count { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); margin-left: auto; }
.filter-select { font-family: var(--font-mono); font-size: 0.78rem; padding: 0.45rem 0.7rem; border: 1px solid var(--stone-line); background: var(--ivory); color: var(--near-black); }

/* Forms ----------------------------------------------------------------- */
.form-field { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.4rem; }
.form-field label { font-family: var(--font-nav); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--graphite); }
.form-field input, .form-field textarea, .form-field select {
  border: 1px solid var(--stone-line); background: var(--white); padding: 0.85rem 1rem; color: var(--near-black);
  border-radius: var(--radius); transition: border-color var(--dur-fast);
}
.form-field input:focus, .form-field textarea:focus, .form-field select:focus { border-color: var(--terracotta); outline: none; }
.form-field.has-error input, .form-field.has-error textarea, .form-field.has-error select { border-color: var(--terracotta-dim); background: #fbf0ec; }
.form-error { font-family: var(--font-mono); font-size: 0.72rem; color: var(--terracotta-dim); }
.form-field.is-valid input { border-color: #5c7a5e; }
.newsletter-form { display: flex; gap: 0.5rem; }
.newsletter-form input { flex: 1; border: 1px solid var(--stone); background: transparent; color: var(--near-black); padding: 0.6rem 0.8rem; }
.form-message { font-family: var(--font-mono); font-size: var(--metadata); min-height: 1.2em; }
.form-message.is-success { color: #5c7a5e; }
.form-message.is-error { color: var(--terracotta-dim); }
.btn.is-loading { position: relative; color: transparent !important; }
.btn.is-loading::after {
  content: ""; position: absolute; width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid currentColor; border-top-color: transparent; color: var(--ivory);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Wizard -------------------------------------------------------------------*/
.wizard-progress { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 3rem; flex-wrap: wrap; }
.wizard-step-dot {
  font-family: var(--font-mono); font-size: 0.75rem; width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--stone-line); display: flex; align-items: center; justify-content: center; color: var(--concrete);
  transition: all var(--dur-fast);
}
.wizard-step-dot.is-active { border-color: var(--terracotta); color: var(--terracotta); }
.wizard-step-dot.is-done { background: var(--near-black); border-color: var(--near-black); color: var(--ivory); }
.wizard-step-line { flex: 1; min-width: 16px; height: 1px; background: var(--stone-line); }
.wizard-step-line.is-done { background: var(--near-black); }
.wizard-panel { display: none; }
.wizard-panel.is-active { display: block; animation: fadeUp var(--dur-fast) var(--ease-draw); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.option-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 0.8rem; }
.option-card {
  border: 1px solid var(--stone-line); padding: 1.2rem; text-align: left; background: var(--white);
  transition: all var(--dur-fast); display: flex; flex-direction: column; gap: 0.3rem;
}
.option-card:hover { border-color: var(--graphite); }
.option-card.is-selected { border-color: var(--terracotta); background: rgba(176,82,47,0.06); }
.option-card-title { font-family: var(--font-display); font-size: 1.1rem; }
.wizard-nav { display: flex; justify-content: space-between; margin-top: 2.5rem; }
.wizard-summary-row { display: flex; justify-content: space-between; padding: 0.9rem 0; border-bottom: 1px solid var(--stone-line); }
.wizard-summary-row dt { font-family: var(--font-mono); font-size: var(--metadata); text-transform: uppercase; color: var(--concrete); }
.wizard-summary-row dd { font-family: var(--font-body); margin: 0; text-align: right; }

/* Drawing viewer ------------------------------------------------------- */
.drawing-viewer { border: 1px solid var(--stone-line); background: var(--white); }
.viewer-tabs { display: flex; border-bottom: 1px solid var(--stone-line); overflow-x: auto; }
.viewer-tab { padding: 0.9rem 1.3rem; font-family: var(--font-nav); font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; background: none; border: none; border-bottom: 2px solid transparent; color: var(--graphite); white-space: nowrap; }
.viewer-tab.is-active { color: var(--terracotta); border-bottom-color: var(--terracotta); }
.viewer-body { padding: clamp(1rem, 3vw, 2.5rem); }
.viewer-stage { position: relative; }
.viewer-stage-panel { display: none; }
.viewer-stage-panel.is-active { display: block; }
.viewer-controls { display: flex; flex-wrap: wrap; gap: 1.2rem; margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--stone-line); align-items: center; }
.layer-toggle { display: flex; align-items: center; gap: 0.4rem; font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; color: var(--graphite); }
.layer-toggle input { accent-color: var(--terracotta); }
.scale-buttons { display: flex; gap: 0.4rem; margin-left: auto; }
.scale-buttons button { font-family: var(--font-mono); font-size: 0.72rem; padding: 0.35rem 0.6rem; border: 1px solid var(--stone-line); background: none; }
.scale-buttons button.is-active { background: var(--near-black); color: var(--ivory); border-color: var(--near-black); }
.room-detail { margin-top: 1.2rem; padding: 1rem; border: 1px dashed var(--stone); font-family: var(--font-mono); font-size: 0.8rem; display: none; }
.room-detail.is-visible { display: block; }
.exploded-controls { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.axo-drawing.is-exploded .axo-volume { transform: translateY(var(--explode-offset, 0px)); }

/* Timeline ------------------------------------------------------------- */
.timeline-row { display: flex; overflow-x: auto; gap: 0; border-top: 1px solid var(--stone-line); border-bottom: 1px solid var(--stone-line); }
.timeline-stage { flex: 1; min-width: 130px; padding: 1.2rem 1rem; border-right: 1px solid var(--stone-line); }
.timeline-stage:last-child { border-right: none; }
.timeline-stage-label { font-family: var(--font-nav); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--terracotta); }
.timeline-stage-note { font-size: 0.85rem; color: var(--graphite); margin-top: 0.5rem; }

/* Team cards ----------------------------------------------------------- */
.team-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
@media (max-width: 760px) { .team-grid { grid-template-columns: repeat(2, 1fr); } }
.team-card { border: 1px solid var(--stone-line); padding: 1.6rem; aspect-ratio: 1; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.team-card-initials { font-family: var(--font-display); font-size: 2.6rem; transition: transform var(--dur-med) var(--ease-draw); }
.team-card-info { opacity: 0; transform: translateY(8px); transition: all var(--dur-fast) var(--ease-draw); }
.team-card:hover .team-card-info, .team-card:focus-within .team-card-info { opacity: 1; transform: translateY(0); }
.team-card:hover .team-card-initials { transform: translateY(-6px); color: var(--terracotta); }
.team-card-info p { font-family: var(--font-mono); font-size: var(--metadata); text-transform: uppercase; color: var(--graphite); margin-bottom: 0.2rem; }

/* Studio process --------------------------------------------------------*/
.process-row { display: grid; grid-template-columns: repeat(6, 1fr); border-top: 1px solid var(--near-black); border-bottom: 1px solid var(--near-black); }
.process-step { padding: 1.4rem 1rem; border-right: 1px solid var(--stone-line); }
.process-step:last-child { border-right: none; }
.process-step-num { font-family: var(--font-mono); font-size: var(--metadata); color: var(--terracotta); }
.process-step-name { font-family: var(--font-display); font-size: 1.3rem; margin-top: 0.4rem; }
@media (max-width: 900px) { .process-row { grid-template-columns: repeat(3, 1fr); } .process-step:nth-child(3) { border-right: none; } }
@media (max-width: 560px) { .process-row { grid-template-columns: repeat(2, 1fr); } .process-step:nth-child(3) { border-right: 1px solid var(--stone-line); } .process-step:nth-child(even) { border-right: none; } }

/* Publications -----------------------------------------------------------*/
.book-jacket { aspect-ratio: 3/4.4; border: 1px solid var(--near-black); padding: 1.5rem; display: flex; }
.book-jacket-inner { display: flex; flex-direction: column; height: 100%; width: 100%; }
.book-jacket-eyebrow { font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.08em; color: var(--concrete); }
.book-jacket-title { font-family: var(--font-display); font-size: clamp(1.3rem, 3vw, 1.9rem); margin-top: auto; }
.book-jacket-year { font-family: var(--font-mono); font-size: 0.75rem; margin-top: 0.5rem; color: var(--terracotta); }
.book-jacket-rule { border-top: 1px solid var(--stone-line); margin: 1rem 0 0.6rem; }
.book-jacket-pages { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); }
.book-jacket:nth-child(4n+1) { background: var(--near-black); color: var(--ivory); }
.book-jacket:nth-child(4n+1) .book-jacket-eyebrow, .book-jacket:nth-child(4n+1) .book-jacket-pages { color: var(--stone); }
.book-jacket:nth-child(4n+2) { background: var(--terracotta); color: var(--white); border-color: var(--terracotta); }
.book-jacket:nth-child(4n+2) .book-jacket-eyebrow, .book-jacket:nth-child(4n+2) .book-jacket-pages { color: rgba(255,255,255,0.7); }
.book-jacket:nth-child(4n+3) { background: var(--stone); }

/* Reading progress ---------------------------------------------------------*/
.reading-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--terracotta); z-index: 150; width: 0%; }
.article-body { max-width: 68ch; margin: 0 auto; }
.article-body p { margin-bottom: 1.3rem; font-size: 1.08rem; }
.article-body .pull-quote { font-family: var(--font-display); font-style: italic; font-size: clamp(1.4rem, 3vw, 2rem); border-left: 2px solid var(--terracotta); padding-left: 1.5rem; margin: 2.5rem 0; }
.article-nav { display: flex; justify-content: space-between; padding-top: 2rem; border-top: 1px solid var(--stone-line); gap: 1rem; }
.article-nav a { display: flex; flex-direction: column; gap: 0.3rem; max-width: 45%; }
.article-nav .direction { font-family: var(--font-mono); font-size: var(--metadata); color: var(--concrete); }
.article-nav .article-nav-title { font-family: var(--font-display); font-size: 1.2rem; }
.article-nav a:hover .article-nav-title { color: var(--terracotta); }

/* Media / player ----------------------------------------------------------*/
.media-player { border: 1px solid var(--stone-line); padding: 1.5rem; }
.player-controls { display: flex; align-items: center; gap: 1rem; }
.player-play { width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--near-black); display: flex; align-items: center; justify-content: center; background: none; }
.player-play:hover { background: var(--near-black); color: var(--ivory); }
.player-timeline { flex: 1; height: 2px; background: var(--stone-line); position: relative; cursor: pointer; }
.player-timeline-fill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--terracotta); width: 0%; }
.player-time { font-family: var(--font-mono); font-size: var(--metadata); }
.chapters-list { margin-top: 1.2rem; display: flex; flex-direction: column; gap: 0.4rem; }
.chapter-item { display: flex; justify-content: space-between; font-family: var(--font-mono); font-size: 0.78rem; padding: 0.4rem 0; border-bottom: 1px solid var(--stone-line); }
.transcript-toggle { margin-top: 1rem; }
.transcript-panel { max-height: 0; overflow: hidden; transition: max-height var(--dur-med) var(--ease-draw); }
.transcript-panel.is-open { max-height: 400px; }

/* Coord map / locations ------------------------------------------------- */
.locations-list { display: flex; flex-direction: column; }
.location-row { display: flex; justify-content: space-between; padding: 0.9rem 0; border-bottom: 1px solid var(--stone-line); font-family: var(--font-mono); font-size: 0.85rem; }

/* Timeline (studio) ------------------------------------------------------ */
.studio-timeline { display: flex; overflow-x: auto; gap: 0; }
.studio-timeline-year { flex: 1; min-width: 140px; padding: 1.5rem 1rem 0; border-top: 3px solid var(--stone-line); position: relative; }
.studio-timeline-year.is-milestone { border-top-color: var(--terracotta); }
.studio-timeline-year .year { font-family: var(--font-mono); font-size: 0.85rem; color: var(--terracotta); }
.studio-timeline-year p { margin-top: 0.5rem; font-size: 0.85rem; }

/* Values grid --------------------------------------------------------------*/
.values-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--stone-line); border: 1px solid var(--stone-line); }
.value-item { background: var(--ivory); padding: 1.5rem 1.2rem; }
.value-item-name { font-family: var(--font-display); font-size: 1.3rem; }
@media (max-width: 900px) { .values-grid { grid-template-columns: repeat(2, 1fr); } }

/* Research / event cards -----------------------------------------------*/
.research-item, .event-item { border-bottom: 1px solid var(--stone-line); padding: 1.8rem 0; display: grid; grid-template-columns: 1fr auto; gap: 1.5rem; align-items: start; }
.research-item-code { font-family: var(--font-mono); font-size: var(--metadata); color: var(--terracotta); }
.research-item-title { font-family: var(--font-display); font-size: 1.5rem; margin-top: 0.4rem; }

/* 404 / error --------------------------------------------------------------*/
.error-page { text-align: center; padding: 8rem var(--gutter); }
.error-code { font-family: var(--font-mono); color: var(--terracotta); letter-spacing: 0.1em; }

/* Utility -------------------------------------------------------------- */
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.75rem; } .mt-4 { margin-top: 3rem; }
.text-center { text-align: center; }
.max-prose { max-width: 62ch; }
.stagger-fade > * { opacity: 0; transform: translateY(14px); transition: opacity var(--dur-med) var(--ease-draw), transform var(--dur-med) var(--ease-draw); }
.stagger-fade.is-visible > * { opacity: 1; transform: translateY(0); }
.stagger-fade.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.stagger-fade.is-visible > *:nth-child(2) { transition-delay: 80ms; }
.stagger-fade.is-visible > *:nth-child(3) { transition-delay: 160ms; }
.stagger-fade.is-visible > *:nth-child(4) { transition-delay: 240ms; }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }