/* I4I – Inspire for Innovation
   Layout: one narrow reading column, a burgundy masthead band, and ISO 81346-style
   reference designations (=function, -product, +location) as section labels.
   No external fonts, scripts or trackers: everything is served from this host. */

:root {
  --burgundy: #8a1c2b;
  --burgundy-deep: #5e111c;
  --wheat: #f3e3cf;
  --brass: #e3a038;
  --ink: #1d1517;
  --muted: #6b5a5d;
  --bg: #fbf8f6;
  --surface: #ffffff;
  --line: #e6dbd6;
  --on-band: #fbf1e6;
  --ph-bg: #fff2b8;
  --ph-fg: #5a4300;

  --font-display: "Segoe UI Variable Display", "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-body: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --step-0: 1rem;
  --step-1: 1.25rem;
  --step-2: 1.6rem;
  --step-3: clamp(2.1rem, 6vw, 3.4rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --burgundy: #e0707e;
    --burgundy-deep: #3a0c13;
    --wheat: #3b2a26;
    --brass: #f0b558;
    --ink: #f1e8e5;
    --muted: #b9a7a9;
    --bg: #171112;
    --surface: #211a1b;
    --line: #3a2e30;
    --on-band: #fbe9dc;
    --ph-bg: #4a3c00;
    --ph-fg: #ffe58a;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --burgundy: #e0707e;
  --burgundy-deep: #3a0c13;
  --wheat: #3b2a26;
  --brass: #f0b558;
  --ink: #f1e8e5;
  --muted: #b9a7a9;
  --bg: #171112;
  --surface: #211a1b;
  --line: #3a2e30;
  --on-band: #fbe9dc;
  --ph-bg: #4a3c00;
  --ph-fg: #ffe58a;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 var(--step-0)/1.6 var(--font-body);
}
img { max-width: 100%; }
a { color: var(--burgundy); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--brass); outline-offset: 3px; border-radius: 2px; }

.wrap {
  max-width: 62rem;
  margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.prose { max-width: 42rem; }

/* Masthead */
.band { background: var(--burgundy-deep); color: var(--on-band); }
.topbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-block: 18px; }
.mark {
  display: inline-flex; align-items: center; gap: 12px;
  color: var(--on-band); text-decoration: none; font-weight: 600; letter-spacing: .02em;
}
.mark-box {
  display: inline-grid; place-items: center;
  min-width: 3.4rem; height: 2.1rem; padding: 0 .5rem;
  background: var(--wheat); color: #8a1c2b;
  border: 2px solid #8a1c2b; border-radius: 6px;
  font: 800 1.15rem/1 var(--font-display); letter-spacing: .06em;
}
:root[data-theme="dark"] .mark-box { color: #5e111c; background: #f3e3cf; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .mark-box { color: #5e111c; background: #f3e3cf; } }
.topnav { display: flex; flex-wrap: wrap; gap: 6px 20px; font-size: .95rem; }
.topnav a { color: var(--on-band); text-decoration: none; opacity: .85; }
.topnav a:hover { opacity: 1; text-decoration: underline; }

.hero { padding-block: 44px 56px; display: grid; gap: 22px; }
.eyebrow {
  font: 600 .8rem/1.2 var(--font-mono); text-transform: uppercase; letter-spacing: .14em; color: var(--brass);
}
.hero h1 {
  margin: 0; font: 800 var(--step-3)/1.05 var(--font-display); letter-spacing: -.02em; text-wrap: balance;
}
.hero h1 em { font-style: normal; color: var(--brass); }
.hero .lede { margin: 0; max-width: 38rem; font-size: var(--step-1); line-height: 1.5; opacity: .92; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 0; padding: 0; list-style: none; }
.hero-facts li {
  border: 1px solid color-mix(in srgb, var(--on-band) 35%, transparent);
  border-radius: 999px; padding: 4px 14px; font-size: .9rem;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 6px; font-weight: 600; text-decoration: none;
  background: var(--brass); color: #2a1a05; border: 2px solid var(--brass);
}
.btn.ghost { background: transparent; color: var(--on-band); border-color: color-mix(in srgb, var(--on-band) 55%, transparent); }

/* Sections */
main { padding-block: 8px 40px; }
section.block { padding-block: 44px 8px; border-bottom: 1px solid var(--line); }
section.block:last-child { border-bottom: 0; }
.refdes {
  display: inline-block; font: 600 .78rem/1 var(--font-mono); letter-spacing: .06em;
  color: var(--burgundy); background: var(--wheat); padding: 5px 8px; border-radius: 4px;
}
h2 { margin: 12px 0 14px; font: 700 var(--step-2)/1.2 var(--font-display); letter-spacing: -.01em; text-wrap: balance; }
h3 { margin: 0 0 6px; font: 700 var(--step-1)/1.3 var(--font-display); }
p { margin: 0 0 14px; }
.muted { color: var(--muted); }

.principles { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 0; margin: 18px 0 30px; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.principles li { padding: 16px 18px 16px 0; border-bottom: 1px solid var(--line); min-width: 0; }
.principles b { display: block; font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 2px; }
.principles span { color: var(--muted); font-size: .95rem; }

.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); gap: 28px; margin-bottom: 30px; }
.split > div { min-width: 0; }

.roles { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 16px; margin: 18px 0 32px; }
.role { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px 20px; min-width: 0; }
.role .k { font: 600 .75rem/1 var(--font-mono); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); }
.role h3 { margin-top: 8px; }

.contacts { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 16px; margin: 18px 0 32px; }
.contact { border-left: 4px solid var(--burgundy); padding: 4px 0 4px 16px; min-width: 0; }
.contact .region { font: 600 .78rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.contact a { font-size: 1.15rem; font-weight: 600; overflow-wrap: anywhere; }

/* Placeholders the site owner must fill */
.ph {
  background: var(--ph-bg); color: var(--ph-fg); padding: 0 .3em; border-radius: 3px;
  font-family: var(--font-mono); font-size: .9em;
}
.ph-note { background: var(--ph-bg); color: var(--ph-fg); padding: 12px 16px; border-radius: 6px; margin: 18px 0; font-size: .95rem; }

/* Legal pages */
.legal h1 { font: 800 var(--step-3)/1.1 var(--font-display); margin: 36px 0 8px; letter-spacing: -.02em; }
.legal h2 { margin-top: 34px; }
.legal address { font-style: normal; }
.legal ul { padding-left: 1.2em; }
.legal li { margin-bottom: 6px; }
.updated { font-family: var(--font-mono); font-size: .85rem; color: var(--muted); }

/* Footer */
footer.site { border-top: 1px solid var(--line); padding-block: 28px 40px; color: var(--muted); font-size: .9rem; }
footer.site .row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
footer.site a { color: var(--muted); }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }