/* ==========================================================
   EBN — Shared stylesheet (Swiss modern)
   ========================================================== */

:root{
  /* Palette */
  --bone:       oklch(0.97 0.005 85);
  --bone-2:     oklch(0.945 0.006 85);
  --paper:      oklch(1 0 0);
  --ink:        oklch(0.18 0.008 60);
  --ink-2:      oklch(0.35 0.008 60);
  --ink-3:      oklch(0.55 0.008 60);
  --ink-4:      oklch(0.72 0.006 60);
  --line:       oklch(0.88 0.005 60);
  --line-2:     oklch(0.80 0.006 60);
  --accent:     oklch(0.58 0.13 42);
  --accent-2:   oklch(0.48 0.14 40);
  --dark:       oklch(0.16 0.008 60);
  --dark-2:     oklch(0.22 0.008 60);
  --on-dark:    oklch(0.94 0.005 85);
  --on-dark-2:  oklch(0.7 0.006 65);

  /* Type */
  --ff-display: "Inter Tight", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ff-body:    "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ff-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --maxw: 1440px;
  --gutter: clamp(20px, 3vw, 40px);
  --col-gap: 24px;

  /* Rhythm */
  --s1: 8px;
  --s2: 16px;
  --s3: 24px;
  --s4: 40px;
  --s5: 64px;
  --s6: 96px;
  --s7: 128px;
  --s8: 160px;
}

*{ box-sizing: border-box; }
html, body{ margin:0; padding:0; background: var(--bone); color: var(--ink); }
html{ scroll-behavior: smooth; }
body{
  font-family: var(--ff-body);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a{ color: inherit; text-decoration: none; }
button{ font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
img{ max-width: 100%; display: block; }

/* ========== Layout helpers ========== */
.wrap{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}
.grid12{
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--col-gap);
}
.rule{ height: 1px; background: var(--line); border: 0; margin: 0; }
.rule-ink{ background: var(--ink); }

/* ========== Type ========== */
.mono{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.mono-accent{ color: var(--accent); }

.eyebrow{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before{
  content:""; width: 24px; height: 1px; background: var(--ink);
  display: inline-block;
}

h1, h2, h3, h4{
  font-family: var(--ff-display);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}
.display{
  font-size: clamp(56px, 9vw, 156px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 500;
}
.h1{
  font-size: clamp(44px, 6vw, 96px);
  line-height: 0.96;
  letter-spacing: -0.035em;
}
.h2{
  font-size: clamp(32px, 4vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}
.h3{
  font-size: clamp(22px, 2vw, 28px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  font-weight: 500;
}
.h4{
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: -0.015em;
  font-weight: 500;
}
.lede{
  font-size: clamp(17px, 1.4vw, 22px);
  line-height: 1.45;
  color: var(--ink-2);
  font-weight: 400;
  letter-spacing: -0.01em;
  text-wrap: pretty;
  max-width: 54ch;
}
p{ text-wrap: pretty; }

/* ========== Buttons ========== */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  border-radius: 2px;
  transition: background .2s, color .2s, transform .2s;
  background: var(--ink);
  color: var(--bone);
  border: 1px solid var(--ink);
}
.btn:hover{ background: var(--accent); border-color: var(--accent); }
.btn .arr{ font-size: 14px; line-height: 1; translate: 0 -0.5px; }
.btn:hover .arr{ translate: 3px -0.5px; }
.btn.ghost{ background: transparent; color: var(--ink); }
.btn.ghost:hover{ background: var(--ink); color: var(--bone); }
.btn.on-dark{ background: var(--bone); color: var(--ink); border-color: var(--bone); }
.btn.on-dark:hover{ background: var(--accent); color: var(--bone); border-color: var(--accent); }
.btn.ghost.on-dark{ background: transparent; color: var(--on-dark); border-color: var(--on-dark); }
.btn.ghost.on-dark:hover{ background: var(--on-dark); color: var(--ink); }

/* ========== Header ========== */
.site-header{
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 40;
  background: color-mix(in oklch, var(--bone) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: background .25s, border-color .25s, color .25s;
}
.site-header.on-dark{
  background: color-mix(in oklch, var(--dark) 80%, transparent);
  border-bottom-color: color-mix(in oklch, var(--on-dark) 20%, transparent);
  color: var(--on-dark);
}
.site-header-inner{
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 24px;
  align-items: center;
  height: 64px;
}
.brand{
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 16px;
  letter-spacing: -0.02em;
}
.brand-mark{
  display: inline-grid;
  place-items: center;
  width: 28px; height: 28px;
  border: 1px solid currentColor;
  font-family: var(--ff-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.05em;
  translate: 0 5px;
}
.nav-inline{
  display: flex;
  justify-content: center;
  gap: 28px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.site-header.on-dark .nav-inline{ color: var(--on-dark-2); }
.nav-inline a{
  position: relative;
  padding: 4px 0;
  transition: color .2s;
}
.nav-inline a[aria-current="page"]{ color: var(--ink); }
.site-header.on-dark .nav-inline a[aria-current="page"]{ color: var(--on-dark); }
.nav-inline a:hover{ color: var(--accent); }
.nav-inline a[aria-current="page"]::before{
  content:""; position: absolute; left: -10px; top: 50%; translate: 0 -50%;
  width: 4px; height: 4px; background: var(--accent);
}
.header-cta{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 9px 14px;
  border: 1px solid currentColor;
  border-radius: 2px;
  transition: background .2s, color .2s;
}
.header-cta:hover{ background: var(--ink); color: var(--bone); border-color: var(--ink); }
.site-header.on-dark .header-cta:hover{ background: var(--on-dark); color: var(--ink); border-color: var(--on-dark); }

.burger{
  width: 32px; height: 32px;
  display: grid; place-items: center;
  gap: 5px;
  border: 1px solid transparent;
  border-radius: 2px;
}
.burger:hover{ border-color: currentColor; }
.burger span{
  display: block; width: 16px; height: 1px; background: currentColor;
}
.burger span:nth-child(2){ width: 12px; }

/* Fullscreen menu */
.menu{
  position: fixed; inset: 0;
  background: var(--dark);
  color: var(--on-dark);
  z-index: 60;
  display: grid;
  grid-template-rows: 64px 1fr auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s ease;
}
.menu[data-open="true"]{ opacity: 1; pointer-events: auto; }
.menu-header{
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 0 var(--gutter);
  border-bottom: 1px solid color-mix(in oklch, var(--on-dark) 20%, transparent);
}
.menu-close{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 8px 14px;
  border: 1px solid var(--on-dark);
  border-radius: 2px;
}
.menu-main{
  padding: var(--s5) var(--gutter);
  align-self: center;
  max-width: var(--maxw);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s5);
}
.menu-nav{
  display: flex; flex-direction: column; gap: 4px;
}
.menu-nav a{
  font-family: var(--ff-display);
  font-size: clamp(36px, 6vw, 80px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  padding: 6px 0;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 12px;
  align-items: baseline;
  color: var(--on-dark-2);
  transition: color .2s, padding .25s;
}
.menu-nav a .n{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--on-dark-2);
  opacity: 0.6;
}
.menu-nav a:hover,
.menu-nav a[aria-current="page"]{ color: var(--on-dark); padding-left: 14px; }
.menu-nav a:hover .n,
.menu-nav a[aria-current="page"] .n{ color: var(--accent); opacity: 1; }
.menu-side{ display: grid; gap: var(--s4); align-content: start; padding-top: 12px; }
.menu-side h4{ font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; color: var(--on-dark-2); margin-bottom: 10px; }
.menu-side .mbox{ color: var(--on-dark); font-size: 14px; line-height: 1.5; }
.menu-side .mbox a:hover{ color: var(--accent); }
.menu-footer{
  padding: 20px var(--gutter);
  border-top: 1px solid color-mix(in oklch, var(--on-dark) 20%, transparent);
  display: flex; justify-content: space-between;
  font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--on-dark-2);
}

body.menu-open{ overflow: hidden; }

/* ========== Page scaffolding ========== */
main{ padding-top: 64px; }
section.block{
  padding: var(--s7) 0;
  position: relative;
}
section.block.dense{ padding: var(--s6) 0; }
section.block.dark{ background: var(--dark); color: var(--on-dark); }
section.block.dark h1,
section.block.dark h2,
section.block.dark h3,
section.block.dark h4{ color: var(--on-dark); }
section.block.dark .lede{ color: var(--on-dark-2); }
section.block.dark .mono,
section.block.dark .eyebrow{ color: var(--on-dark-2); }
section.block.dark .eyebrow::before{ background: var(--on-dark-2); }
section.block.dark .rule{ background: color-mix(in oklch, var(--on-dark) 20%, transparent); }

.section-head{
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--s5);
  align-items: start;
  margin-bottom: var(--s5);
}
.section-head .num{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 10px;
  border-top: 1px solid var(--ink);
}
section.block.dark .section-head .num{ color: var(--on-dark-2); border-top-color: var(--on-dark); }

/* Page header (common to sub-pages) */
.page-head{
  padding: calc(64px + var(--s6)) 0 var(--s6);
  border-bottom: 1px solid var(--line);
}
.page-head .grid12{ align-items: end; }
.page-head .meta{ grid-column: 1 / span 3; display: grid; gap: var(--s2); align-content: end; padding-bottom: 8px; }
.page-head .meta .label{ font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.page-head .meta .idx{ font-family: var(--ff-mono); font-size: 11px; color: var(--accent); letter-spacing: 0.1em; }
.page-head .title{ grid-column: 4 / span 9; }
.page-head h1{ margin-top: 0; }
.page-head .lede{ margin-top: var(--s3); max-width: 48ch; }

/* ========== Footer ========== */
.site-footer{
  background: var(--dark);
  color: var(--on-dark);
  padding: var(--s6) 0 var(--s3);
}
.site-footer .grid12{ row-gap: var(--s5); }
.site-footer .foot-brand{ grid-column: 1 / span 5; }
.site-footer .foot-brand h3{
  font-size: clamp(40px, 5vw, 64px);
  letter-spacing: -0.03em;
  color: var(--on-dark);
  line-height: 0.95;
}
.site-footer .foot-brand p{
  margin-top: var(--s3);
  color: var(--on-dark-2);
  max-width: 38ch;
  font-size: 14px;
}
.site-footer .foot-col{ grid-column: span 2; }
.site-footer .foot-col:first-of-type{ grid-column: 7 / span 2; }
.site-footer .foot-col h4{
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--on-dark-2);
  margin-bottom: var(--s3);
}
.site-footer .foot-col a, .site-footer .foot-col span{
  display: block;
  padding: 4px 0;
  color: var(--on-dark);
  font-size: 14px;
}
.site-footer .foot-col a:hover{ color: var(--accent); }
.site-footer .foot-bar{
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--s3);
  border-top: 1px solid color-mix(in oklch, var(--on-dark) 20%, transparent);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-dark-2);
}
.site-footer .foot-bar a:hover{ color: var(--accent); }

/* ========== Utility ========== */
.kv{
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.kv .k{ font-family: var(--ff-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); }
.kv .v{ font-family: var(--ff-display); font-size: 16px; color: var(--ink); letter-spacing: -0.01em; }
section.block.dark .kv{ border-bottom-color: color-mix(in oklch, var(--on-dark) 20%, transparent); }
section.block.dark .kv .k{ color: var(--on-dark-2); }
section.block.dark .kv .v{ color: var(--on-dark); }

.num-big{
  font-family: var(--ff-display);
  font-size: clamp(64px, 8vw, 128px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.85;
}
.num-big sup{ font-size: 0.32em; color: var(--accent); vertical-align: top; top: 0.3em; position: relative; margin-left: 4px; letter-spacing: 0; }

/* Photo placeholder — architectural, no grid bg */
.ph{
  position: relative;
  overflow: hidden;
  background: var(--bone-2);
  display: grid;
  place-items: end start;
  color: var(--ink-3);
}
.ph:not(:has(img))::before{
  content:"";
  position: absolute; inset: 0;
  background:
    linear-gradient(135deg,
      oklch(0.88 0.012 78) 0%,
      oklch(0.82 0.015 75) 40%,
      oklch(0.74 0.02 70) 100%);
}
.ph > img{ position: absolute; inset: 0; z-index: 2; width: 100%; height: 100%; object-fit: cover; }
.ph:has(> img)::before{ display: none; }
.ph.warm:not(:has(img))::before{
  background:
    linear-gradient(135deg,
      oklch(0.78 0.04 60) 0%,
      oklch(0.55 0.06 50) 100%);
}
.ph.dark:not(:has(img))::before{
  background:
    linear-gradient(135deg,
      oklch(0.3 0.02 60) 0%,
      oklch(0.18 0.02 55) 100%);
}
.ph .ph-label{
  position: relative;
  z-index: 1;
  padding: 14px;
  font-family: var(--ff-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.ph.warm .ph-label, .ph.dark .ph-label{ color: oklch(0.94 0.02 80); opacity: 0.9; }

/* ========== Responsive ========== */
@media (max-width: 980px){
  .nav-inline{ display: none; }
  .page-head .meta{ grid-column: 1 / -1; }
  .page-head .title{ grid-column: 1 / -1; margin-top: var(--s3); }
  .section-head{ grid-template-columns: 1fr; gap: var(--s2); }
  .site-footer .foot-brand{ grid-column: 1 / -1; }
  .site-footer .foot-col,
  .site-footer .foot-col:first-of-type{ grid-column: span 6; }
  .menu-main{ grid-template-columns: 1fr; gap: var(--s4); }
}
@media (max-width: 560px){
  .site-header-inner{ grid-template-columns: auto 1fr auto; }
  .header-cta{ display: none; }
  .site-footer .foot-col,
  .site-footer .foot-col:first-of-type{ grid-column: span 12; }
}