/* Ontokinesis Applied Systems. Site styles.
   Palette: plum, bronze, green, silver. Typeface: Amiri (self-hosted, SIL OFL). */

@font-face { font-family: "Amiri"; src: url("/assets/fonts/amiri-400.woff2") format("woff2");  font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Amiri"; src: url("/assets/fonts/amiri-400i.woff2") format("woff2"); font-weight: 400; font-style: italic; font-display: swap; }
@font-face { font-family: "Amiri"; src: url("/assets/fonts/amiri-700.woff2") format("woff2");  font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Amiri"; src: url("/assets/fonts/amiri-700i.woff2") format("woff2"); font-weight: 700; font-style: italic; font-display: swap; }

:root {
  --plum: #45173F;
  --plum-deep: #2E0F2B;
  --plum-ink: #5B2163;
  --bronze: #B5834A;
  --bronze-lt: #D4A86A;
  --bronze-tint: #EBDDC2;
  --green: #1F4A3C;
  --black: #0F0710;
  --ink: #1B1220;
  --ivory: #F7F1E5;
  --silver: #BFC1C8;
  --max: 1180px;
  --gutter: clamp(20px, 5vw, 56px);
  --header-h: 76px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: "Amiri", "Times New Roman", Times, serif;
  font-size: 1.25rem;
  line-height: 1.62;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--plum-ink); text-underline-offset: .2em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
h1, h2, h3 { font-weight: 700; line-height: 1.15; margin: 0 0 .5em; letter-spacing: .005em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 2.4vw, 1.9rem); }
p { margin: 0 0 1em; }
:focus-visible { outline: 3px solid var(--bronze-lt); outline-offset: 3px; }
[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

.wrap { max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -999px; top: 0; z-index: 100; background: var(--bronze-lt); color: #000; padding: 10px 16px; }
.skip:focus { left: 8px; top: 8px; }

/* ---------- Header: plum bar, bronze tabs ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: var(--plum); border-bottom: 2px solid var(--bronze); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: var(--header-h); gap: 20px; }
.brand { display: flex; align-items: center; gap: 16px; color: var(--bronze-lt); text-decoration: none; }
.brand img { height: 58px; width: auto; }
.brand-text { display: none; line-height: 1.1; }
.brand-name { display: block; font-size: 1.45rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.brand-sub { display: block; margin-top: 4px; font-size: .8rem; letter-spacing: .32em; text-transform: uppercase; color: var(--silver); }
@media (min-width: 760px) { .brand-text { display: block; } }

.site-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 10px 16px;
  color: var(--bronze-lt); text-decoration: none;
  text-transform: uppercase; letter-spacing: .18em; font-size: .92rem; font-weight: 700;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.site-nav a:hover { color: var(--ivory); border-bottom-color: var(--bronze-lt); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--bronze-lt); }

.nav-toggle {
  display: none; background: transparent; color: var(--bronze-lt);
  border: 1px solid var(--bronze); padding: 8px 16px; cursor: pointer;
  font: inherit; font-size: .9rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase;
}
@media (max-width: 759px) {
  .nav-toggle { display: inline-block; }
  .site-nav { position: absolute; left: 0; right: 0; top: 100%; display: none; background: var(--plum); border-bottom: 2px solid var(--bronze); }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 6px var(--gutter) 14px; }
  .site-nav a { padding: 14px 0; border-bottom: 1px solid rgba(212, 168, 106, .25); }
}

/* ---------- Landing hero: the whole picture is the doorway ---------- */
.hero {
  position: relative; display: flex; align-items: flex-end; overflow: hidden; isolation: isolate;
  min-height: clamp(560px, calc(100vh - var(--header-h)), 880px);
  background: #0d4a63; color: #fff;
}
.hero picture, .hero img { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero img { object-fit: cover; object-position: 36% 58%; transition: transform 1.8s cubic-bezier(.2, .6, .2, 1); }
.hero:hover img, .hero:has(.hero-link:focus-visible) img { transform: scale(1.03); }
.hero::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(to top, rgba(30,10,33,.95) 0, rgba(30,10,33,.78) 24%, rgba(30,10,33,.25) 48%, rgba(30,10,33,0) 66%);
}
/* the border is invisible until the visitor reaches for the picture */
.hero-frame {
  position: absolute; inset: clamp(10px, 1.8vw, 26px); z-index: 2; pointer-events: none;
  border: 1px solid transparent; transition: border-color .6s ease;
}
.hero:hover .hero-frame, .hero:has(.hero-link:focus-visible) .hero-frame { border-color: rgba(212, 168, 106, .9); }
.hero-copy { position: relative; z-index: 3; width: 100%; padding-block: clamp(40px, 7vw, 88px) clamp(52px, 6vw, 84px); }
.hero-eyebrow { margin: 0 0 14px; color: #fff; text-shadow: 0 1px 14px rgba(20,5,25,.85); font-size: .9rem; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; }
.hero h1 { text-wrap: balance; max-width: 15em; margin-bottom: .3em; color: #fff; font-size: clamp(2.5rem, 6.4vw, 4.8rem); text-shadow: 0 2px 26px rgba(20, 5, 25, .55); }
.hero-lede { max-width: 33em; margin-bottom: 28px; color: rgba(255, 255, 255, .93); font-size: clamp(1.15rem, 2vw, 1.45rem); }
.hero-cue { display: inline-flex; align-items: center; gap: 14px; color: var(--bronze-lt); font-size: .95rem; font-weight: 700; letter-spacing: .3em; text-transform: uppercase; }
.hero-cue::after { content: ""; width: 48px; height: 1px; background: currentColor; transition: width .5s ease; }
.hero:hover .hero-cue::after, .hero:has(.hero-link:focus-visible) .hero-cue::after { width: 100px; }
.hero-link { position: absolute; inset: 0; z-index: 4; }
.hero-link:focus-visible { outline: 3px solid var(--bronze-lt); outline-offset: -12px; }

/* ---------- Bands ---------- */
.band { padding-block: clamp(56px, 8vw, 104px); }
.band--tint { background: var(--bronze-tint); }
.band--black { background: var(--black); color: #E8E3DA; }
.band--bronze { background: var(--bronze); color: #120a14; }
.band--green { background: var(--green); color: var(--ivory); }
.band--black a:not(.btn), .band--green a:not(.btn) { color: var(--bronze-lt); }
.eyebrow { margin: 0 0 12px; color: var(--plum-ink); font-size: .9rem; font-weight: 700; letter-spacing: .28em; text-transform: uppercase; }
.band--black .eyebrow, .band--green .eyebrow { color: var(--bronze-lt); }
.band--bronze .eyebrow { color: #2a1a0a; }
.section-head { max-width: 42em; margin-bottom: clamp(28px, 4vw, 48px); }
.section-head p { font-size: 1.3rem; }
.rule { width: 64px; height: 2px; margin: 0 auto 28px; background: var(--bronze); border: 0; }
.statement { max-width: 31em; margin: 0 auto; text-align: center; font-size: clamp(1.5rem, 2.7vw, 2.15rem); line-height: 1.42; }

/* ---------- Buttons and chips ---------- */
.btn {
  display: inline-block; padding: 14px 28px; border: 2px solid var(--bronze);
  background: var(--bronze); color: var(--black); text-decoration: none;
  font-size: .95rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase;
  transition: background .25s, color .25s, border-color .25s;
}
.btn:hover { background: var(--black); border-color: var(--black); color: var(--bronze-lt); }
.btn--dark { background: var(--black); border-color: var(--black); color: var(--bronze-lt); }
.btn--dark:hover { background: transparent; color: var(--black); }
.btn--ghost { background: transparent; border-color: currentColor; color: inherit; }
.btn--ghost:hover { background: var(--black); border-color: var(--black); color: var(--bronze-lt); }
.band--bronze .btn--ghost { color: var(--black); }
.band--black .btn--ghost, .band--green .btn--ghost { color: var(--bronze-lt); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.chip { display: inline-block; align-self: flex-start; padding: 3px 12px; border: 1px solid currentColor; font-size: .74rem; font-weight: 700; letter-spacing: .16em; line-height: 1.4; text-transform: uppercase; }

/* ---------- Cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(16px, 2.4vw, 28px); }
@media (max-width: 779px) { .card-grid { grid-template-columns: 1fr; } }
.card { position: relative; display: flex; flex-direction: column; gap: 10px; min-height: 300px; padding: 34px 32px 30px; transition: transform .3s ease, box-shadow .3s ease; }
.card:hover { transform: translateY(-4px); box-shadow: 0 14px 30px rgba(30, 10, 33, .28); }
.card h3 { margin: 6px 0 0; }
.card h3 a { color: inherit; text-decoration: none; }
.card h3 a::after { content: ""; position: absolute; inset: 0; }
.card-kind { margin: 0; font-size: .85rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; opacity: .85; }
.card p:not(.card-kind) { margin: 0; }
.card-more { margin-top: auto; padding-top: 14px; font-size: .9rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
.card--plum { background: var(--plum); color: var(--ivory); }
.card--plum h3, .card--green h3, .card--black h3 { color: var(--bronze-lt); }
.card--bronze { background: var(--bronze); color: var(--black); }
.card--green { background: var(--green); color: var(--ivory); }
.card--black { background: var(--black); color: #E8E3DA; }
.card .btn-row { margin-top: auto; padding-top: 14px; position: relative; z-index: 2; }
.card--bronze a:not(.btn), .card--plum a:not(.btn), .card--green a:not(.btn), .card--black a:not(.btn) { color: inherit; }

/* ---------- Principles ---------- */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(28px, 4vw, 56px); }
@media (max-width: 879px) { .principles { grid-template-columns: 1fr; } }
.principle { padding-top: 22px; border-top: 2px solid var(--bronze); }
.principle .num { display: block; margin-bottom: 8px; color: var(--bronze-lt); font-size: 1rem; font-weight: 700; letter-spacing: .3em; }
.principle h3 { color: #fff; }
.principle p { margin: 0; color: var(--silver); }

/* ---------- Inner-page hero strips ---------- */
.page-hero { padding-block: clamp(48px, 7vw, 96px); }
.page-hero .wrap { display: grid; align-items: center; gap: clamp(28px, 5vw, 64px); }
.page-hero--split .wrap { grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); }
@media (max-width: 879px) { .page-hero--split .wrap { grid-template-columns: 1fr; } }
.page-hero h1 { margin-bottom: .25em; font-size: clamp(2.8rem, 7vw, 5rem); }
.page-hero .lede { max-width: 34em; margin: 0; font-size: clamp(1.25rem, 2.2vw, 1.6rem); }
.page-hero--green { background: var(--green); color: var(--ivory); }
.page-hero--green h1, .page-hero--black h1 { color: var(--bronze-lt); }
.page-hero--black { background: var(--black); color: #E8E3DA; }
.page-hero--bronze { background: var(--bronze); color: var(--black); }
.page-hero--tint { background: var(--bronze-tint); color: var(--ink); }
.page-hero--bronze .eyebrow { color: #2a1a0a; }
.page-hero--green .eyebrow, .page-hero--black .eyebrow { color: var(--bronze-lt); }
.logo-plate { width: min(100%, 400px); margin-inline: auto; }

/* ---------- Prose ---------- */
.prose { max-width: 40em; }
.prose h2 { margin-top: 1.4em; font-size: clamp(1.8rem, 3.4vw, 2.5rem); }
.prose h2:first-child { margin-top: 0; }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: clamp(24px, 5vw, 72px); }
@media (max-width: 879px) { .split { grid-template-columns: 1fr; } }
.split > .prose { max-width: none; }

/* ---------- Structure diagram ---------- */
.org { max-width: 920px; }
.org-parent { margin: 0 auto; padding: 18px 24px; max-width: 420px; background: var(--plum); color: var(--bronze-lt); text-align: center; font-size: 1.25rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.org-stem { width: 1px; height: 28px; margin: 0 auto; background: var(--bronze); }
.org-kids { position: relative; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 28px 0 0; list-style: none; }
.org-kids::before { content: ""; position: absolute; top: 0; left: 12.5%; right: 12.5%; border-top: 1px solid var(--bronze); }
.org-kids li { position: relative; margin-inline: 7px; padding: 16px 12px; background: var(--ivory); border: 1px solid var(--bronze); text-align: center; font-size: 1.05rem; line-height: 1.3; }
.org-kids li::before { content: ""; position: absolute; top: -29px; left: 50%; height: 28px; border-left: 1px solid var(--bronze); }
@media (max-width: 719px) {
  .org-stem, .org-kids::before, .org-kids li::before { display: none; }
  .org-kids { grid-template-columns: 1fr; gap: 10px; padding-top: 12px; }
  .org-kids li { margin-inline: 0; }
}

/* ---------- Projects ---------- */
.project { padding-block: clamp(44px, 6vw, 80px); }
.project:nth-of-type(even) { background: var(--bronze-tint); }
.project-side { padding-left: 22px; border-left: 6px solid var(--accent, var(--plum)); }
.project-side h2 { margin: 12px 0 0; font-size: clamp(1.8rem, 3vw, 2.4rem); }
.facts { display: grid; gap: 0; margin: 22px 0 0; }
.facts div { padding: 10px 0; border-top: 1px solid rgba(27, 18, 32, .22); }
.facts dt { font-size: .78rem; font-weight: 700; letter-spacing: .22em; text-transform: uppercase; color: var(--plum-ink); }
.facts dd { margin: 2px 0 0; font-size: 1.1rem; }
.project .prose p { font-size: 1.25rem; }
.note { margin-top: 28px; padding: 18px 22px; background: rgba(69, 23, 63, .08); border-left: 4px solid var(--plum); font-size: 1.05rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: clamp(28px, 6vw, 80px); }
@media (max-width: 879px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-address { margin: 0 0 18px; font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; }
.contact-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid rgba(27, 18, 32, .3); }
.contact-list a { display: grid; grid-template-columns: 1fr auto; gap: 4px 20px; align-items: baseline; padding: 20px 4px; border-bottom: 1px solid rgba(27, 18, 32, .3); color: var(--ink); text-decoration: none; transition: background .2s, padding .2s; }
.contact-list a:hover { background: var(--bronze-tint); padding-inline: 16px; }
.contact-list strong { font-size: 1.3rem; }
.contact-list span { grid-column: 1; font-size: 1.05rem; color: #4a3d50; }
.contact-list em { grid-row: 1 / span 2; grid-column: 2; font-size: .85rem; font-style: normal; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--plum-ink); }

/* ---------- Footer ---------- */
.site-footer { padding-block: 56px 28px; background: var(--plum-deep); border-top: 2px solid var(--bronze); color: var(--silver); }
.site-footer a { color: var(--bronze-lt); }
.footer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr); gap: 40px; }
@media (max-width: 759px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
.footer-brand img { width: auto; height: 84px; margin-bottom: 14px; }
.footer-brand p { max-width: 24em; margin: 0; }
.site-footer h2 { margin: 0 0 12px; color: var(--bronze-lt); font-size: .85rem; letter-spacing: .28em; text-transform: uppercase; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 6px; }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 40px; padding-top: 20px; border-top: 1px solid rgba(191, 193, 200, .25); font-size: .95rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}