/* Hofstetter History Software — site stylesheet
   Base: black, white and two greys. Colour appears only inside images. */

:root {
  --ink: #111111;
  --paper: #ffffff;
  --grey: #666666;
  --grey-2: #333333;
  --rule: #dddddd;
  --max: 1280px;
  --gutter: 56px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mark: "Montserrat", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--grey); }
h1, h2, h3, h4 { margin: 0; font-family: var(--serif); font-weight: 300; letter-spacing: -0.02em; line-height: 1.05; }
h1 { font-size: clamp(44px, 6.5vw, 84px); }
h2 { font-size: clamp(32px, 3.6vw, 48px); }
h3 { font-size: clamp(24px, 2.4vw, 30px); font-weight: 400; line-height: 1.15; letter-spacing: -0.01em; }
p { margin: 0; }
p + p { margin-top: 1em; }
.lede { font-size: clamp(18px, 1.6vw, 21px); line-height: 1.5; color: var(--grey-2); max-width: 620px; }
.muted { color: var(--grey); }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.eyebrow { font-size: 12px; font-weight: 500; letter-spacing: 0.22em; text-transform: uppercase; color: var(--grey); }
.label { font-size: 13px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; }
.rule { height: 1px; background: var(--ink); }
.rule-light { height: 1px; background: var(--rule); }
.grid-12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: 32px; row-gap: 32px; }
.col-3 { grid-column: span 3; } .col-4 { grid-column: span 4; } .col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; } .col-7 { grid-column: span 7; } .col-8 { grid-column: span 8; } .col-9 { grid-column: span 9; } .col-12 { grid-column: span 12; }
.min0 { min-width: 0; }
.stack { display: flex; flex-direction: column; gap: 24px; }
.stack-s { display: flex; flex-direction: column; gap: 12px; }
.section { padding: 88px 0; }
.section-s { padding: 56px 0; }
.frame { border: 1px solid var(--ink); }
.frame img { width: 100%; height: 100%; object-fit: cover; }

/* ----- Buttons: default white with black border; hover / focus / active -> black with white text ----- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px;
  border: 1px solid var(--ink); border-radius: 0;
  background: var(--paper); color: var(--ink);
  font-family: var(--sans); font-size: 13px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase;
  cursor: pointer; transition: background .15s ease, color .15s ease, border-color .15s ease;
  text-decoration: none;
}
.btn:hover, .btn:focus-visible, .btn:active { background: var(--ink); color: var(--paper); border-color: var(--ink); outline: none; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover, .btn-primary:focus-visible, .btn-primary:active { background: var(--paper); color: var(--ink); border-color: var(--ink); }
.btn-link { display: inline-flex; align-items: center; min-height: 44px; padding: 0 2px; border-bottom: 1px solid var(--ink); }
.btn-link:hover, .btn-link:focus-visible, .btn-link:active { background: var(--ink); color: var(--paper); padding: 0 8px; }
.on-dark .btn { background: transparent; color: var(--paper); border-color: var(--paper); }
.on-dark .btn-primary { background: var(--paper); color: var(--ink); }
.on-dark .btn:hover, .on-dark .btn:focus-visible, .on-dark .btn:active { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.on-dark .btn-primary:hover, .on-dark .btn-primary:focus-visible, .on-dark .btn-primary:active { background: var(--ink); color: var(--paper); border-color: var(--paper); }
.on-dark .btn-link { border-bottom-color: var(--paper); color: var(--paper); }
.on-dark .btn-link:hover, .on-dark .btn-link:focus-visible { background: var(--paper); color: var(--ink); }

/* ----- Header ----- */
.site-header { border-bottom: 1px solid var(--ink); background: var(--paper); position: sticky; top: 0; z-index: 20; }
.site-header .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 24px; padding-top: 18px; padding-bottom: 18px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand img { height: 48px; width: auto; }
.brand .wordmark { display: flex; flex-direction: column; gap: 2px; font-family: var(--mark); line-height: 1; }
.brand .wordmark b { font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand .wordmark span { font-weight: 500; font-size: 10.5px; letter-spacing: 0.08em; }
.brand:hover { color: var(--ink); }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.nav a { display: inline-flex; align-items: center; min-height: 40px; padding: 0 12px; font-size: 13px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; border: 1px solid transparent; }
.nav a:hover, .nav a:focus-visible, .nav a:active { background: var(--ink); color: var(--paper); outline: none; }
.nav a[aria-current="page"] { border-bottom-color: var(--ink); }
.nav a[aria-current="page"]:hover { border-color: var(--ink); }
.site-header.dark { background: var(--ink); color: var(--paper); border-bottom-color: var(--ink); }
.site-header.dark .nav a:hover, .site-header.dark .nav a:focus-visible { background: var(--paper); color: var(--ink); }
.site-header.dark .nav a[aria-current="page"] { border-bottom-color: var(--paper); }
.site-header.dark .brand:hover { color: var(--paper); }

/* ----- Home hero A (white, typographic) ----- */
.hero-a { padding: 96px 0 88px; }
.hero-a .grid-12 { align-items: end; }
.hero-a .mark { width: 100%; max-width: 300px; margin-left: auto; }

/* ----- Home hero B (black, full-bleed map) ----- */
.hero-b { position: relative; background: var(--ink); color: var(--paper); min-height: 760px; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; }
.hero-b .bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .92; }
.hero-b .shade { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(17,17,17,0.15) 0%, rgba(17,17,17,0.35) 45%, rgba(17,17,17,0.88) 100%); }
.hero-b .wrap { position: relative; padding-top: 120px; padding-bottom: 72px; }
.hero-b .lede { color: #d6d6d6; }

/* ----- Band image ----- */
.band { border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.band img { width: 100%; height: 520px; object-fit: cover; }
.caption { padding: 12px 0 0; font-size: 13px; color: var(--grey); }

/* ----- Project rows (from the Projects proposal) ----- */
.project-row { position: relative; display: block; border-top: 1px solid var(--ink); color: inherit; }
.project-row:last-of-type { border-bottom: 1px solid var(--ink); }
.project-row .row-link { color: inherit; }
.project-row .row-link::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.project-row .ext, .project-row .badge { position: relative; z-index: 2; }
.project-row:hover .btn, .project-row:focus-within .btn { background: var(--ink); color: var(--paper); }
.project-row .wrap { padding-top: 72px; padding-bottom: 72px; }
.project-row .grid-12 { align-items: center; }
.project-row .media { border: 1px solid var(--ink); overflow: hidden; background: var(--paper); }
.project-row .media img { width: 100%; height: 400px; object-fit: cover; transition: transform .6s ease; }
.project-row:hover .media img { transform: scale(1.02); }
.project-row .title { font-family: var(--serif); font-weight: 400; font-size: clamp(34px, 3.8vw, 48px); line-height: 1.05; letter-spacing: -0.02em; }
.project-row:hover .title, .project-row:focus-within .title { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 8px; }
.project-row .actions { display: flex; flex-wrap: wrap; gap: 16px 24px; align-items: center; padding-top: 8px; }
.ext { font-family: var(--sans); font-size: 13px; letter-spacing: 0.04em; color: var(--grey); word-break: break-all; }
.ext:hover { color: var(--ink); text-decoration: underline; }
.badge { display: inline-flex; align-items: center; min-height: 28px; padding: 0 10px; border: 1px solid var(--ink); font-size: 11px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; }
.code { padding: 32px; background: var(--ink); color: var(--paper); font-family: "SF Mono", Menlo, Consolas, monospace; font-size: 14px; line-height: 1.7; white-space: pre-wrap; overflow-x: auto; margin: 0; }

/* ----- Dark statement band ----- */
.dark { background: var(--ink); color: var(--paper); }
.dark .eyebrow { color: #999999; }
.dark .muted { color: #aaaaaa; }
.dark .rule-light { background: #444444; }
.dark .btn { background: transparent; color: var(--paper); border-color: var(--paper); }
.dark .btn:hover, .dark .btn:focus-visible, .dark .btn:active { background: var(--paper); color: var(--ink); }
.values { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px; padding-top: 16px; border-top: 1px solid #444444; font-size: 13px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: #cccccc; }

/* ----- Page header ----- */
.page-head { padding: 88px 0 56px; }
.page-head .grid-12 { align-items: end; }

/* ----- Prose & tables ----- */
.prose { max-width: 720px; }
.prose h2 { font-size: clamp(28px, 3vw, 36px); margin: 56px 0 20px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 22px; margin: 36px 0 12px; }
.prose ul { margin: 16px 0; padding-left: 20px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--grey); }
.table { width: 100%; border-collapse: collapse; font-size: 15px; }
.table th { text-align: left; font-weight: 500; font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--grey); padding: 12px 16px 12px 0; border-bottom: 1px solid var(--ink); }
.table td { padding: 14px 16px 14px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
.table-wrap { overflow-x: auto; }
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.fact { padding-top: 16px; border-top: 1px solid var(--ink); }
.fact b { display: block; font-family: var(--serif); font-weight: 300; font-size: 44px; line-height: 1; letter-spacing: -0.02em; margin-bottom: 8px; }
.fact span { font-size: 14px; color: var(--grey); }
.gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.gallery figure { margin: 0; }
.gallery img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border: 1px solid var(--ink); }
.gallery figcaption { padding-top: 10px; font-size: 13px; color: var(--grey); }
.styles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 24px; }
.styles figure { margin: 0; }
.styles img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; border: 1px solid var(--ink); }
.styles figcaption { padding-top: 12px; font-size: 14px; color: var(--grey-2); line-height: 1.5; }
.styles figcaption b { display: block; font-family: var(--serif); font-weight: 400; font-size: 22px; letter-spacing: -0.01em; margin-bottom: 6px; color: var(--ink); }
.partner { display: flex; flex-wrap: wrap; align-items: center; gap: 24px 40px; padding: 32px; border: 1px solid var(--ink); }
.partner img { height: 64px; width: auto; }
.people { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
.person { padding-top: 16px; border-top: 1px solid var(--ink); }
.person b { display: block; font-family: var(--serif); font-weight: 400; font-size: 26px; letter-spacing: -0.01em; }
.person span { font-size: 13px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--grey); }
.aside { padding-top: 16px; border-top: 1px solid var(--ink); font-size: 15px; }
.aside dt { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--grey); margin-top: 16px; }
.aside dd { margin: 4px 0 0; }

/* ----- Forms ----- */
.form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field.full { grid-column: 1 / -1; }
.field label { font-size: 12px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--grey); }
.field label .req { color: var(--ink); }
.field input, .field textarea {
  width: 100%; padding: 14px 0; border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; background: transparent;
  font-family: var(--sans); font-size: 17px; color: var(--ink); outline: none;
}
.field textarea { min-height: 160px; resize: vertical; }
.field input:focus, .field textarea:focus { border-bottom-width: 2px; }
.field input:invalid:not(:placeholder-shown) { border-bottom-color: var(--grey); }
.form-note { font-size: 13px; color: var(--grey); }
.form-status { padding: 16px 0; font-size: 15px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ----- Footer ----- */
.site-footer { border-top: 1px solid var(--ink); background: var(--ink); color: var(--paper); }
.site-footer .wrap { padding-top: 56px; padding-bottom: 40px; }
.site-footer a:hover { color: #ffffff; text-decoration: underline; }
.site-footer .brand .wordmark b { font-size: 22px; }
.site-footer .brand .wordmark span { font-size: 12px; }
.site-footer .brand img { height: 56px; }
.site-footer .info { font-size: 15px; color: #cfcfcf; line-height: 1.7; }
.site-footer .info a { color: #ffffff; }
.site-footer .links { display: flex; flex-wrap: wrap; gap: 8px 28px; font-size: 13px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; }
.site-footer .legal { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid #444444; font-size: 13px; color: #aaaaaa; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }

/* ----- Responsive ----- */
@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .grid-12 { column-gap: 24px; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }
  .values { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts { grid-template-columns: 1fr; }
  .gallery, .people, .form { grid-template-columns: 1fr; }
  .styles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .band img { height: 320px; }
  .project-row .media img { height: 260px; }
  .project-row .wrap { padding-top: 48px; padding-bottom: 48px; }
  .hero-a { padding: 56px 0; }
  .hero-a .mark { margin: 0; max-width: 200px; }
  .hero-b { min-height: 560px; }
  .hero-b .wrap { padding-top: 72px; padding-bottom: 48px; }
  .section { padding: 56px 0; }
  .page-head { padding: 56px 0 32px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; }
  .site-header .wrap { padding-top: 12px; padding-bottom: 12px; }
  .brand img { height: 40px; }
  .nav a { padding: 0 8px; font-size: 12px; }
}