/* Oversight — site styles (recreates the original Hostinger Builder look: white, Prata, dark-grey text) */
:root {
  --text: #1a1a1a;
  --text-soft: #353535;
  --muted: #5f5f5f;
  --line: #dcdcdc;
  --bg: #ffffff;
  --bg-soft: #f4f4f4;
  --btn: #353535;
  --btn-hover: #565656;
  --link: #1d1e20;
  --accent: #0f4c81;
  --max: 1224px;
  --font-head: 'Prata', Georgia, 'Times New Roman', serif;
  --font-body: 'Prata', Georgia, 'Times New Roman', serif;
  --font-ui: 'Roboto', Arial, Helvetica, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 90px; }
body { margin: 0; background: var(--bg); color: var(--text-soft); font: 400 16px/1.6 var(--font-body); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; overflow-wrap: anywhere; }
a:hover { color: #000; text-decoration-thickness: 2px; }
h1, h2, h3, h4, h5, h6 { font-family: var(--font-head); font-weight: 400; color: var(--text); line-height: 1.3; margin: 0 0 .6em; }
h1 { font-size: clamp(2rem, 4.2vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.8rem); }
h4 { font-size: 1.4rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
ul { padding-left: 1.3em; }
li { margin-bottom: .4em; }
.skip-link { position: absolute; left: -9999px; top: 0; background: #000; color: #fff; padding: .6em 1em; z-index: 100; }
.skip-link:focus { left: 8px; top: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Header / navigation ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(255,255,255,.97); border-bottom: 1px solid transparent; }
.site-header.is-scrolled { border-bottom-color: var(--line); box-shadow: 0 2px 10px rgba(0,0,0,.04); }
.site-header__inner { max-width: 1240px; margin: 0 auto; padding: 28px 16px; display: flex; align-items: center; gap: 24px; }
.site-header__brand { display: none; font-family: var(--font-head); font-size: 1.2rem; color: var(--text); text-decoration: none; }
.nav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; align-items: center; column-gap: 40px; row-gap: 8px; }
.nav__item { position: relative; margin: 0; display: flex; align-items: center; }
.nav__link { font: 400 16px/1.5 var(--font-body); color: var(--text-soft); text-decoration: none; padding: 4px 0; }
.nav__link:hover, .nav__item.is-active > .nav__link { color: #000; }
.nav__link[aria-current="page"] { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.nav__link--folder { cursor: default; }
.nav__toggle { background: none; border: 0; padding: 4px 0 4px 8px; cursor: pointer; color: var(--text-soft); font-size: 14px; line-height: 1; }
.nav__sub { list-style: none; margin: 0; padding: 10px 0; position: absolute; top: 100%; left: -16px; min-width: 210px; background: #fff; border: 1px solid var(--line); box-shadow: 0 8px 24px rgba(0,0,0,.08); display: none; z-index: 60; }
.nav__sub li { margin: 0; }
.nav__sub .nav__link { display: block; padding: 8px 16px; }
.nav__sub .nav__link:hover { background: var(--bg-soft); }
.nav__item--parent:hover > .nav__sub, .nav__item--parent:focus-within > .nav__sub, .nav__item--parent.is-open > .nav__sub { display: block; }
.nav-burger { display: none; margin-left: auto; width: 44px; height: 44px; background: none; border: 0; cursor: pointer; padding: 10px; }
.nav-burger span { display: block; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s, opacity .2s; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 960px) {
  .site-header__inner { padding: 14px 16px; flex-wrap: wrap; }
  .site-header__brand { display: block; }
  .nav-burger { display: block; }
  .nav { display: none; width: 100%; }
  .nav.is-open { display: block; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; padding: 8px 0 12px; }
  .nav__item { flex-wrap: wrap; border-top: 1px solid var(--line); }
  .nav__item > .nav__link { flex: 1; padding: 12px 0; }
  .nav__toggle { padding: 12px 8px; }
  .nav__sub { position: static; display: block; width: 100%; border: 0; box-shadow: none; padding: 0 0 8px 16px; min-width: 0; }
  .nav__item--parent:hover > .nav__sub { display: block; }
  .nav__toggle { display: none; }
}

/* ---------- Layout ---------- */
.page { min-height: 60vh; }
.container { max-width: var(--max); margin: 0 auto; padding: 16px 16px 48px; }
.container--narrow { max-width: 860px; }
.page-title { text-align: center; margin: 24px 0 40px; }
.page-title--left { text-align: left; }
.lead { font-size: 1.1rem; }
.section { margin: 0 0 48px; }
.section > h2, .section > h3 { margin-bottom: .5em; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 24px; align-items: start; }
@media (max-width: 760px) { .grid-2 { grid-template-columns: 1fr; } }
.col-heading { text-align: center; font-size: 1.1rem; font-weight: 700; margin-bottom: 1em; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }

/* ---------- Charts ---------- */
.chart { margin: 0; }
.chart__zoom { display: block; }
.chart img { width: 100%; border: 1px solid #eee; }
.chart figcaption { margin-top: .8em; font-size: .95rem; color: var(--text-soft); }
.chart figcaption a { word-break: break-all; }

/* ---------- Link lists & cards ---------- */
.link-list { list-style: none; padding: 0; }
.link-list li { margin-bottom: .8em; }
.year-links { display: flex; gap: 16px; flex-wrap: wrap; list-style: none; padding: 0; }
.year-links a { display: inline-block; padding: 14px 40px; background: var(--btn); color: #fff; text-decoration: none; font: 400 14px/1.35 var(--font-body); text-transform: uppercase; letter-spacing: .04em; }
.year-links a:hover { background: var(--btn-hover); color: #fff; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.card { border: 1px solid var(--line); padding: 20px 22px; background: #fff; }
.card h3 { font-size: 1.2rem; }
.definitions dt { font-weight: 700; color: var(--text); margin-top: .8em; }
.definitions dd { margin: .2em 0 0; }
.parties li { margin-bottom: 1.2em; }
.parties strong { color: var(--text); }
.mission { font-size: 1.1rem; }
.mission li { margin-bottom: .6em; }
.callout { background: var(--bg-soft); padding: 28px; text-align: center; }
.callout h2 { margin-bottom: .2em; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--line); margin: 0 0 32px; background: #fff; }
.data-table { border-collapse: collapse; width: 100%; min-width: 900px; font: 400 14px/1.5 var(--font-ui); color: #222; }
.data-table caption { caption-side: top; text-align: left; padding: 16px; font: 400 1.2rem/1.4 var(--font-head); color: var(--text); }
.data-table caption .note { display: block; font: 400 .85rem/1.4 var(--font-ui); color: var(--muted); margin-top: 6px; }
.data-table th, .data-table td { border: 1px solid var(--line); padding: 10px 12px; vertical-align: top; text-align: left; }
.data-table thead th { background: #2f2f2f; color: #fff; font-weight: 700; position: sticky; top: 0; }
.data-table tbody tr:nth-child(even) td { background: #fafafa; }
.data-table td.nowrap { white-space: nowrap; }
.data-table--compact { min-width: 600px; }
.table-hint { display: none; font: 400 13px/1.4 var(--font-ui); color: var(--muted); margin: -24px 0 24px; }
@media (max-width: 960px) { .table-hint { display: block; } }

/* ---------- British inventors ---------- */
.inventors-hero { background: linear-gradient(135deg, #0f4c81, #1f6aa5); color: #fff; text-align: center; padding: 48px 16px 40px; margin-bottom: 32px; }
.inventors-hero h1 { color: #fff; font-family: var(--font-ui); font-weight: 700; letter-spacing: .02em; margin-bottom: .3em; }
.inventors-hero p { max-width: 760px; margin: 0 auto; font: 400 1.1rem/1.5 var(--font-ui); }
.inventor-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 22px; }
.inventor-card { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 14px rgba(0,0,0,.06); display: flex; flex-direction: column; }
.inventor-card picture { display: block; aspect-ratio: 9 / 10; background: #e5e7eb; overflow: hidden; }
.inventor-card img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.inventor-card .content { padding: 16px 18px 20px; font-family: var(--font-ui); }
.inventor-card h2 { font: 700 1.1rem/1.3 var(--font-ui); color: var(--accent); margin: 0 0 .5em; }
.inventor-card .lifetime { display: block; font-weight: 400; color: #4b5563; font-size: .95rem; margin-top: 2px; }
.inventor-card p { margin: 0; color: #4b5563; font-size: .93rem; line-height: 1.5; }
.credits { margin-top: 40px; font: 400 13px/1.5 var(--font-ui); color: var(--muted); }
.credits summary { cursor: pointer; font-size: 14px; color: var(--text-soft); }
.credits ul { columns: 2 320px; padding-left: 1.2em; }

/* ---------- Blog ---------- */
.post-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 32px; }
.post-card a.post-card__link { text-decoration: none; color: inherit; display: block; }
.post-card picture { display: block; aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-soft); margin-bottom: 14px; }
.post-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.post-card a:hover img { transform: scale(1.03); }
.post-card h2 { font-size: 1.4rem; margin-bottom: .3em; }
.post-meta { font: 400 14px/1.4 var(--font-ui); color: var(--muted); margin-bottom: 1em; }
.post-cover { margin: 0 0 32px; }
.post-cover img { width: 100%; max-height: 520px; object-fit: cover; }
.post-body { font-size: 1.1rem; }

/* ---------- Contact form ---------- */
.form-wrap { max-width: 520px; margin: 0 auto; background: var(--bg-soft); border: 1px solid #1d1e20; padding: 32px 28px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; margin-bottom: 6px; color: #1a1a1a; }
.form-row .req { color: #b00020; }
.form-row input, .form-row textarea { width: 100%; padding: 12px 14px; font: 400 16px/1.4 var(--font-ui); color: #222; background: #fff; border: 1px solid #000; border-radius: 0; }
.form-row textarea { min-height: 150px; resize: vertical; }
.form-row input:focus, .form-row textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; }
.form-error { color: #b00020; font: 400 14px/1.4 var(--font-ui); margin-top: 4px; }
.form-alert { padding: 14px 16px; margin-bottom: 20px; font-family: var(--font-ui); }
.form-alert--error { background: #fdecee; border: 1px solid #f5c2c7; color: #842029; }
.form-success { text-align: center; padding: 48px 16px; }
.form-success h2 { font-size: 2.2rem; }
.hp-field { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.btn { display: inline-block; padding: 16px 48px; background: var(--btn); color: #fff; border: 0; cursor: pointer; font: 400 14px/1.35 var(--font-body); text-transform: uppercase; letter-spacing: .04em; text-decoration: none; }
.btn:hover { background: var(--btn-hover); color: #fff; }

/* ---------- 404 ---------- */
.notfound { text-align: center; padding: 64px 16px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: #fafafa; margin-top: 32px; }
.site-footer__inner { max-width: 1240px; margin: 0 auto; padding: 32px 16px; display: grid; gap: 10px; text-align: center; }
.site-footer__name { margin: 0; color: var(--text); }
.site-footer__name a { text-decoration: none; color: inherit; }
.site-footer__links { list-style: none; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 28px; padding: 0; margin: 0; }
.site-footer__links li { margin: 0; }
.site-footer__copy { margin: 0; font: 400 13px/1.5 var(--font-ui); color: var(--muted); }

@media print { .site-header, .site-footer { display: none; } .table-wrap { overflow: visible; } }
.h6 { font-size: 1.1rem; font-weight: 700; }
.h4 { font-size: 1.4rem; }
.h3 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.data-table { table-layout: fixed; }
.data-table td { overflow-wrap: anywhere; }
.data-table td.nowrap { overflow-wrap: normal; }