/* ==========================================================
   Ferylox Ltd - stylesheet
   Direction: parts-counter catalogue. Blueprint paper, ink blue,
   signal yellow. Edit the colours and fonts in :root below.
   ========================================================== */

:root {
  --ink: #10263a;
  --ink-2: #1b3a54;
  --paper: #eef1f3;
  --white: #ffffff;
  --steel: #566673;
  --line: #c9d2d9;
  --yellow: #f5c400;
  --yellow-soft: #fdf1b8;
  --error: #b3261e;
  --ok: #1e6f45;

  --display: "Big Shoulders Display", "Arial Narrow", "Roboto Condensed", Impact, sans-serif;
  --body: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --wrap: 1160px;
  --gutter: clamp(1.1rem, 4vw, 2rem);
  --radius: 3px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--white);
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.on-dark :focus-visible { outline-color: var(--yellow); }

.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }

.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 100;
  background: var(--yellow); color: var(--ink); padding: .7rem 1rem; font-weight: 700;
}
.skip-link:focus { top: 1rem; }

/* ---------- type ---------- */
h1, h2, h3 {
  font-family: var(--display);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: 0;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2.9rem, 7vw, 5.2rem); }
h2 { font-size: clamp(2.1rem, 4.2vw, 3.2rem); }
h3 { font-size: 1.65rem; line-height: 1.1; }
p { margin: 0 0 1em; }
.lede { font-size: 1.2rem; max-width: 40ch; color: var(--ink-2); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font: 700 1rem/1 var(--body);
  padding: 1rem 1.5rem;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  background: var(--yellow);
  color: var(--ink);
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s, color .15s;
}
.btn:hover { background: var(--ink); color: var(--white); }
.btn--dark { background: var(--ink); color: var(--white); }
.btn--dark:hover { background: var(--yellow); color: var(--ink); }
.on-dark .btn { border-color: var(--yellow); }
.on-dark .btn:hover { background: var(--white); border-color: var(--white); color: var(--ink); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 4.5rem; }

.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.brand svg { width: 2.3rem; height: 2.3rem; color: var(--ink); }
.brand span { font: 800 2rem/1 var(--display); letter-spacing: .01em; }

.nav-toggle {
  display: none;
  background: none; border: 2px solid var(--ink); border-radius: var(--radius);
  padding: .55rem .8rem; font: 700 .95rem var(--body); color: var(--ink); cursor: pointer;
}

.site-nav ul { list-style: none; display: flex; align-items: center; gap: .3rem; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: .6rem .85rem; text-decoration: none; font-weight: 600;
  border-bottom: 3px solid transparent;
}
.site-nav a:hover { border-bottom-color: var(--line); }
.site-nav a[aria-current="page"] { border-bottom-color: var(--yellow); }
.site-nav .nav-cta a {
  margin-left: .6rem; background: var(--yellow); border: 2px solid var(--ink);
  border-radius: var(--radius); padding: .6rem 1.1rem; font-weight: 700;
}
.site-nav .nav-cta a:hover { background: var(--ink); color: var(--white); }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--white); border-bottom: 1px solid var(--line);
    display: none; padding: .5rem var(--gutter) 1.2rem;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav a { padding: .9rem 0; border-bottom: 1px solid var(--line); }
  .site-nav a[aria-current="page"] { border-bottom-color: var(--yellow); border-bottom-width: 3px; }
  .site-nav .nav-cta a { margin: 1rem 0 0; text-align: center; }
}

/* ---------- hero ---------- */
.grid-paper {
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(16,38,58,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,38,58,.07) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero { padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(2.5rem, 6vw, 4.5rem); border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr); gap: clamp(1.5rem, 4vw, 3.5rem); align-items: center; }
.hero h1 { max-width: 11ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }

.plate {
  display: inline-block; background: var(--yellow); color: var(--ink);
  font-weight: 700; font-size: .95rem; padding: .4rem 1.1rem .4rem .8rem; margin-bottom: 1.3rem;
  clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
}

.rotor { width: 100%; height: auto; color: var(--ink); overflow: visible; }
.rotor .line { fill: none; stroke: currentColor; stroke-width: 1.6; }
.rotor .thin { fill: none; stroke: var(--steel); stroke-width: 1; }
.rotor .dash { stroke-dasharray: 10 6 2 6; }
.rotor .face { fill: var(--white); fill-opacity: .55; }
.rotor text { font: 600 21px var(--body); fill: var(--ink); }
.rotor .dot { fill: var(--ink); }

/* one orchestrated moment: the disc is drawn once on load */
.rotor .draw { stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.7s cubic-bezier(.5,0,.2,1) forwards; }
.rotor .draw.d2 { animation-delay: .25s; }
.rotor .draw.d3 { animation-delay: .5s; }
.rotor .reveal { opacity: 0; animation: appear .6s ease-out 1.5s forwards; }
.rotor .reveal.late { animation-delay: 2s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes appear { to { opacity: 1; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rotor .draw { animation: none; stroke-dashoffset: 0; }
  .rotor .reveal { animation: none; opacity: 1; }
}

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero h1 { max-width: 14ch; }
}

/* ---------- part finder band ---------- */
.finder { background: var(--ink); color: var(--white); padding: 2.2rem 0; }
.finder .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 1.5rem 3rem; align-items: center; }
.finder h2 { font-size: 2.2rem; margin: 0 0 .3rem; }
.finder p { margin: 0; color: #c3d0da; }
.finder form { display: grid; grid-template-columns: 1fr 1.4fr auto; gap: .8rem; align-items: end; }
.finder label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: .35rem; }
@media (max-width: 900px) {
  .finder .wrap { grid-template-columns: 1fr; }
  .finder form { grid-template-columns: 1fr; }
}

/* ---------- form controls ---------- */
input, select, textarea {
  width: 100%; font: inherit; color: var(--ink);
  background: var(--white); border: 2px solid var(--steel); border-radius: var(--radius);
  padding: .8rem .9rem;
}
input:hover, select:hover, textarea:hover { border-color: var(--ink); }
input[aria-invalid="true"], textarea[aria-invalid="true"], select[aria-invalid="true"] { border-color: var(--error); }
textarea { min-height: 9rem; resize: vertical; }
input.plate-input { text-transform: uppercase; letter-spacing: .06em; font-weight: 700; background: var(--yellow-soft); }

/* ---------- sections ---------- */
.section { padding: clamp(3rem, 7vw, 5.5rem) 0; }
.section--paper { background: var(--paper); }
.section-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 1rem 3rem; align-items: end; margin-bottom: 2.2rem; }
.section-head h2 { margin: 0; }
.section-head p { margin: 0; color: var(--ink-2); max-width: 52ch; }
@media (max-width: 760px) { .section-head { grid-template-columns: 1fr; } }

/* catalogue rows */
.rows { border-bottom: 1px solid var(--ink); }
.row {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: .8rem 3rem;
  padding: 1.8rem 0; border-top: 1px solid var(--ink);
}
.row h3 { font-size: 2.4rem; margin: 0; }
.row p { margin: 0 0 .7rem; max-width: 56ch; }
.row a.more { font-weight: 700; }
@media (max-width: 760px) { .row { grid-template-columns: 1fr; } .row h3 { font-size: 2rem; } }

/* category index */
.index { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); column-gap: 2.5rem; }
.index li { border-top: 1px solid var(--line); }
.index a { display: flex; justify-content: space-between; gap: 1rem; padding: .95rem .2rem; text-decoration: none; font-weight: 600; }
.index a:hover { background: var(--yellow-soft); }
.index a::after { content: "Ask"; font-weight: 500; color: var(--steel); font-size: .9rem; }
.note { color: var(--steel); margin-top: 1.4rem; }
@media (max-width: 900px) { .index { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .index { grid-template-columns: 1fr; } }

/* steps (a real sequence, so numbered) */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.6rem; }
.steps li { counter-increment: step; border-top: 6px solid var(--yellow); padding-top: 1rem; }
.steps li::before { content: counter(step); display: block; font: 800 3rem/1 var(--display); margin-bottom: .3rem; }
.steps h3 { font-size: 1.5rem; margin-bottom: .3rem; }
.steps p { margin: 0; color: var(--ink-2); font-size: 1rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* call to action band */
.cta { background: var(--yellow); padding: clamp(2.5rem, 6vw, 4rem) 0; }
.cta .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; }
.cta h2 { margin: 0 0 .3rem; }
.cta p { margin: 0; max-width: 48ch; }
.cta .btn { background: var(--ink); color: var(--white); }
.cta .btn:hover { background: var(--white); color: var(--ink); }

/* ---------- inner pages ---------- */
.page-head { padding: clamp(2.5rem, 6vw, 4.2rem) 0 clamp(2rem, 4vw, 3rem); border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(2.8rem, 6vw, 4.4rem); margin-bottom: .3em; }
.page-head p { margin: 0; max-width: 56ch; font-size: 1.15rem; color: var(--ink-2); }

.two-col { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 3rem; align-items: start; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; gap: 2rem; } }
.two-col p { max-width: 62ch; }

.facts { background: var(--paper); border-left: 6px solid var(--yellow); padding: 1.5rem 1.6rem; }
.facts h2 { font-size: 1.9rem; }
.facts dl { margin: 0; }
.facts dt { font-weight: 700; margin-top: .9rem; }
.facts dt:first-of-type { margin-top: 0; }
.facts dd { margin: 0; color: var(--ink-2); }

.principles { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.4rem; }
.principles li { border-left: 3px solid var(--ink); padding-left: 1.1rem; }
.principles h3 { font-size: 1.6rem; margin-bottom: .2rem; }
.principles p { margin: 0; color: var(--ink-2); max-width: 58ch; }

.service { padding: 2.6rem 0; border-top: 1px solid var(--ink); display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 1rem 3rem; scroll-margin-top: 5.5rem; }
.service:last-of-type { border-bottom: 1px solid var(--ink); }
.service h2 { font-size: clamp(2.2rem, 4vw, 3rem); margin: 0; }
.service ul { padding-left: 1.2rem; margin: 0 0 1rem; }
.service li { margin-bottom: .3rem; }
.service p { max-width: 58ch; }
@media (max-width: 760px) { .service { grid-template-columns: 1fr; } }

details { border-top: 1px solid var(--line); padding: 1rem 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; font-size: 1.1rem; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 800 1.6rem/1 var(--display); transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { margin: .8rem 0 0; max-width: 62ch; color: var(--ink-2); }

/* contact */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem 1.2rem; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-weight: 700; margin-bottom: .35rem; }
.field .opt { font-weight: 400; color: var(--steel); }
.err { color: var(--error); font-weight: 600; font-size: .95rem; margin: .35rem 0 0; }
.check { display: flex; gap: .7rem; align-items: flex-start; }
.check input { width: 1.3rem; height: 1.3rem; margin-top: .2rem; flex: none; accent-color: var(--ink); }
.check label { font-weight: 400; margin: 0; }
.status { margin-top: 1rem; padding: 1rem 1.2rem; border-left: 6px solid var(--ok); background: #e6f3ec; font-weight: 600; }
.status.is-error { border-left-color: var(--error); background: #fbe9e7; }
@media (max-width: 620px) { .form-grid { grid-template-columns: 1fr; } }

.contact-details { background: var(--paper); border-left: 6px solid var(--yellow); padding: 1.5rem 1.6rem; }
.contact-details h2 { font-size: 1.9rem; }
.contact-details h3 { font-family: var(--body); font-size: 1rem; font-weight: 700; margin: 1.1rem 0 .1rem; }
.contact-details p { margin: 0; }

/* legal pages */
.legal { display: grid; grid-template-columns: minmax(0, 16rem) minmax(0, 1fr); gap: 3rem; align-items: start; }
.toc { position: sticky; top: 6rem; font-size: .95rem; }
.toc h2 { font-size: 1.4rem; margin-bottom: .5rem; }
.toc ol { margin: 0; padding-left: 1.2rem; }
.toc li { margin-bottom: .4rem; }
.prose { max-width: 72ch; }
.prose section { scroll-margin-top: 5.5rem; margin-bottom: 2.4rem; }
.prose h2 { font-size: 2.1rem; }
.prose h3 { font-family: var(--body); font-size: 1.1rem; font-weight: 700; margin: 1.4rem 0 .3rem; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin-bottom: .4rem; }
.updated { color: var(--steel); margin-bottom: 2rem; }
@media (max-width: 860px) { .legal { grid-template-columns: 1fr; gap: 1.5rem; } .toc { position: static; } }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: #dbe5ec; padding: 3.2rem 0 1.6rem; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.3fr; gap: 2rem; }
.site-footer h2 { font: 700 1rem var(--body); color: var(--white); margin: 0 0 .7rem; letter-spacing: 0; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: .4rem; }
.site-footer .brand { color: var(--white); margin-bottom: .8rem; }
.site-footer .brand svg { color: var(--white); }
.site-footer address { font-style: normal; }
.fine { margin-top: 2.4rem; padding-top: 1.2rem; border-top: 1px solid #2f4a63; font-size: .9rem; color: #a9bac7; }
.fine p { margin: 0 0 .3rem; }
@media (max-width: 860px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* 404 */
.lost { padding: 6rem 0; }
.lost h1 { font-size: clamp(4rem, 14vw, 9rem); margin: 0; }

/* keep anchored sections clear of the sticky header */
[id] { scroll-margin-top: 5.5rem; }

/* ---------- portfolio ---------- */
.showcase { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 3.5rem; border-bottom: 1px solid var(--ink); }
.item { display: grid; grid-template-columns: 5rem minmax(0, 1fr); gap: 1.3rem; padding: 2rem 0; border-top: 1px solid var(--ink); }
.item:nth-last-child(2):nth-child(odd), .item:last-child { border-bottom: 0; }
.icon-box { width: 5rem; height: 5rem; background: var(--yellow); border: 2px solid var(--ink); display: grid; place-items: center; }
.icon-box svg { width: 3.2rem; height: 3.2rem; color: var(--ink); }
.item h2 { font-size: 2rem; margin: 0 0 .3rem; }
.item p { margin: 0 0 .6rem; max-width: 46ch; }
.item .typical { color: var(--ink-2); font-size: 1rem; }
.item .more { font-weight: 700; }
@media (max-width: 860px) { .showcase { grid-template-columns: 1fr; } .item:nth-last-child(2):nth-child(odd) { border-bottom: 0; } }
@media (max-width: 420px) { .item { grid-template-columns: 1fr; } }

/* ---------- blog ---------- */
.posts { border-bottom: 1px solid var(--ink); }
.post { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: 1rem 3rem; padding: 2rem 0; border-top: 1px solid var(--ink); }
.post h2 { font-size: clamp(1.9rem, 3.4vw, 2.6rem); margin-bottom: .4rem; }
.post h2 a { text-decoration: none; }
.post h2 a:hover { text-decoration: underline; text-decoration-thickness: 3px; text-decoration-color: var(--yellow); }
.post p { max-width: 58ch; margin-bottom: .6rem; }
.post .more { font-weight: 700; }
.post-meta { color: var(--steel); margin: 0; }
.page-head .post-meta { margin-bottom: .8rem; font-size: 1rem; }
.article { max-width: 68ch; }
.article h2 { font-size: 2rem; margin-top: 1.8rem; }
.article > p:first-child { font-size: 1.2rem; color: var(--ink-2); }
@media (max-width: 760px) { .post { grid-template-columns: 1fr; gap: .3rem; } }