/* ============================================================
   Holtwood Machine — "Built to print"
   The site is styled like an engineering drawing package:
   blueprint grid, dimension lines, mono spec labels, a
   title-block footer. One file, no preprocessor, no build.
   Accent: logo cyan #1A9CBE.
   ============================================================ */

:root {
  --cyan: #1A9CBE;
  --cyan-deep: #127893;
  --cyan-ghost: rgba(26, 156, 190, .12);
  --ink: #10151c;            /* near-black, blue cast */
  --ink-2: #39434f;
  --muted: #5f6b78;
  --paper: #f7f9fa;          /* drawing paper */
  --white: #ffffff;
  --line: #d8e0e6;           /* light rules */
  --line-2: #aebac4;         /* darker rules (dimension lines) */
  --grid: rgba(26, 156, 190, .07);
  --dark: #0d1319;           /* dark sections */
  --dark-2: #121a23;
  --dark-line: #24303c;
  --dark-grid: rgba(94, 189, 214, .07);
  --danger: #c03221;
  --ok: #1e8a46;
  --max: 1160px;
  --sans: "Archivo", -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--sans); font-size: 17px; line-height: 1.6;
  color: var(--ink); background: var(--paper);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cyan-deep); }
a:hover { color: var(--cyan); }
h1, h2, h3, h4 { line-height: 1.08; margin: 0 0 .5em; font-weight: 800; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.6rem); text-transform: uppercase; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); text-transform: uppercase; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.3em; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.lead { font-size: 1.18rem; line-height: 1.55; color: var(--ink-2); max-width: 40em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 22px; }
.mono { font-family: var(--mono); }

/* mono spec label, used everywhere: "OP 10 / TURNING" */
.spec-label {
  font-family: var(--mono); font-size: .78rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--cyan-deep); margin: 0 0 .9em;
  display: flex; align-items: center; gap: 10px;
}
.spec-label::before { content: ""; width: 26px; height: 2px; background: var(--cyan); flex: none; }
.on-dark .spec-label { color: var(--cyan); }

.skip { position: absolute; left: -999px; top: 8px; background: var(--cyan); color: #fff; padding: 8px 12px; z-index: 100; font-family: var(--mono); }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }
::selection { background: var(--cyan); color: #fff; }

/* ---------- blueprint grid backgrounds ---------- */
.grid-bg {
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
}
.on-dark.grid-bg, .hero.grid-bg, .cta.grid-bg {
  background-image:
    linear-gradient(var(--dark-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--dark-grid) 1px, transparent 1px);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 13px 26px; font-weight: 700; font-size: 1rem;
  font-family: var(--mono); letter-spacing: .04em; text-transform: uppercase;
  text-decoration: none; cursor: pointer; line-height: 1.2;
  color: #fff; background: var(--cyan); border: 2px solid var(--cyan);
  border-radius: 2px;
}
.btn:hover { background: var(--cyan-deep); border-color: var(--cyan-deep); color: #fff; }
.btn.ghost { background: transparent; color: var(--cyan-deep); }
.btn.ghost:hover { background: var(--cyan-ghost); color: var(--cyan-deep); }
.on-dark .btn.ghost, .hero .btn.ghost, .cta .btn.ghost { color: #fff; border-color: #fff; }
.on-dark .btn.ghost:hover, .hero .btn.ghost:hover, .cta .btn.ghost:hover { background: rgba(255,255,255,.1); color: #fff; }
.btn.big { padding: 16px 32px; font-size: 1.05rem; }
.btn[disabled] { opacity: .55; cursor: default; }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }

/* ---------- header ---------- */
.site-header {
  background: var(--white); border-bottom: 2px solid var(--ink);
  position: sticky; top: 0; z-index: 50;
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 74px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand img { height: 54px; width: auto; }
.nav-toggle { display: none; background: none; border: 2px solid var(--ink); border-radius: 2px; padding: 8px 12px; cursor: pointer; font: 700 .85rem var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--ink); }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 2px; }
.nav a {
  display: block; padding: 10px 13px; text-decoration: none; color: var(--ink);
  font-family: var(--mono); font-size: .84rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
}
.nav a:hover { color: var(--cyan-deep); }
.nav a[aria-current="page"]:not(.btn) { color: var(--cyan-deep); box-shadow: inset 0 -3px 0 var(--cyan); }
.nav .btn { margin-left: 10px; padding: 11px 18px; font-size: .84rem; color: #fff; }
.nav .btn:hover { color: #fff; }
@media (max-width: 940px) {
  .nav-toggle { display: inline-block; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--white); border-bottom: 2px solid var(--ink); box-shadow: 0 12px 28px rgba(13,19,25,.12); }
  .nav.open { display: block; }
  .nav ul { flex-direction: column; align-items: stretch; padding: 10px 22px 18px; }
  .nav a { padding: 13px 8px; font-size: .95rem; }
  .nav .btn { margin: 10px 0 0; text-align: center; }
}

/* drawing-number strip under the header, one per page */
.dwg-strip { background: var(--ink); color: #8fa3b3; font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.dwg-strip .wrap { display: flex; justify-content: space-between; gap: 16px; padding-top: 6px; padding-bottom: 6px; }
.dwg-strip span b { color: #fff; font-weight: 600; }
@media (max-width: 640px) { .dwg-strip .cell-hide { display: none; } }

/* ---------- sections ---------- */
.section { padding: 72px 0; }
.section.tight { padding: 48px 0; }
.section.on-dark { background: var(--dark); color: #c9d4dd; }
.on-dark h1, .on-dark h2, .on-dark h3 { color: #fff; }
.on-dark .lead { color: #a7b4bf; }
.on-dark a:not(.btn) { color: #7fd0e6; }
.rule-top { border-top: 1px solid var(--line-2); }

/* ---------- hero ---------- */
.hero { background: var(--dark); color: #c9d4dd; padding: 84px 0 72px; position: relative; overflow: hidden; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; position: relative; }
.hero h1 { color: #fff; margin-bottom: .35em; }
.hero h1 em { font-style: normal; color: var(--cyan); }
.hero .lead { margin-bottom: 1.5em; }
.hero-fig svg { width: 100%; height: auto; display: block; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 26px; margin-top: 2em; padding-top: 1.2em; border-top: 1px solid var(--dark-line); font-family: var(--mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: #7d8b98; }
.hero-meta b { color: #fff; font-weight: 600; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .hero { padding: 56px 0; } }

/* ---------- dimension-line heading decoration ---------- */
.dim-h { display: flex; align-items: center; gap: 18px; margin-bottom: 1.2em; }
.dim-h h2 { margin: 0; flex: 0 1 auto; min-width: 0; }
.dim-h::after { content: ""; height: 1px; background: var(--line-2); flex: 1; }
.on-dark .dim-h::after { background: var(--dark-line); }

/* ---------- op cards (process) ---------- */
.ops { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border: 1px solid var(--line-2); background: var(--white); }
.op { padding: 26px 22px 28px; border-left: 1px solid var(--line-2); }
.op:first-child { border-left: 0; }
.op .num { font-family: var(--mono); font-size: .75rem; letter-spacing: .12em; color: var(--cyan-deep); display: block; margin-bottom: 12px; }
.op h3 { font-size: 1.02rem; text-transform: uppercase; letter-spacing: .02em; margin-bottom: .4em; }
.op p { font-size: .92rem; color: var(--muted); margin: 0; }
@media (max-width: 980px) { .ops { grid-template-columns: 1fr 1fr; } .op { border-top: 1px solid var(--line-2); } .op:nth-child(-n+2) { border-top: 0; } .op:nth-child(odd) { border-left: 0; } .op:nth-child(even) { border-left: 1px solid var(--line-2); } }
@media (max-width: 560px) { .ops { grid-template-columns: 1fr; } .op { border-left: 0 !important; border-top: 1px solid var(--line-2); } .op:first-child { border-top: 0; } }

/* ---------- generic grids & cards ---------- */
.grid { display: grid; gap: 26px; }
.grid.c2 { grid-template-columns: repeat(2, 1fr); }
.grid.c3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid.c3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .grid.c2, .grid.c3 { grid-template-columns: 1fr; } }

.card { background: var(--white); border: 1px solid var(--line-2); padding: 26px 26px 28px; position: relative; }
.card h3 { text-transform: uppercase; letter-spacing: .02em; }
.card p:last-child { margin-bottom: 0; }
/* corner tick marks, like drawing zone marks */
.card::before, .card::after { content: ""; position: absolute; width: 12px; height: 12px; pointer-events: none; }
.card::before { top: -1px; left: -1px; border-top: 2px solid var(--cyan); border-left: 2px solid var(--cyan); }
.card::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--cyan); border-right: 2px solid var(--cyan); }

/* ---------- big stat callouts (dark) ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.stat .big { font-family: var(--mono); font-weight: 700; font-size: clamp(1.5rem, 3.2vw, 2.2rem); color: #fff; letter-spacing: -.02em; line-height: 1.1; }
.stat .big small { font-size: .55em; color: var(--cyan); }
.stat p { font-size: .9rem; color: #8b99a6; margin: 8px 0 0; }
@media (max-width: 800px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- capability feature rows ---------- */
.cap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; padding: 52px 0; border-top: 1px solid var(--line-2); }
.cap:first-of-type { border-top: 0; }
.cap.flip > .cap-fig { order: 2; }
@media (max-width: 820px) { .cap { grid-template-columns: 1fr; gap: 24px; padding: 36px 0; } .cap.flip > .cap-fig { order: 0; } }
.cap-fig { border: 1px solid var(--line-2); background: var(--white); position: relative; }
.cap-fig img, .cap-fig video { display: block; width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.fig-tag {
  position: absolute; left: 0; bottom: 0; background: var(--ink); color: #fff;
  font-family: var(--mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 6px 12px; z-index: 1;
}

/* photo placeholder, drawn like a voided area on a print */
.ph {
  aspect-ratio: 4/3; width: 100%; position: relative; overflow: hidden;
  background:
    linear-gradient(to top right, transparent calc(50% - 1px), var(--line) calc(50% - 1px), var(--line) calc(50% + 1px), transparent calc(50% + 1px)),
    linear-gradient(to bottom right, transparent calc(50% - 1px), var(--line) calc(50% - 1px), var(--line) calc(50% + 1px), transparent calc(50% + 1px)),
    var(--white);
  display: flex; align-items: center; justify-content: center;
}
.cap-fig .ph { border: 0; }
.ph span { background: var(--white); border: 1px solid var(--line-2); color: var(--muted); font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; padding: 7px 14px; text-align: center; line-height: 1.5; }

/* ---------- stock list (materials) ---------- */
.stock { border: 1px solid var(--line-2); background: var(--white); }
.stock-row { display: grid; grid-template-columns: 220px 1fr; border-top: 1px solid var(--line); }
.stock-row:first-child { border-top: 0; }
.stock-row dt { font-family: var(--mono); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--cyan-deep); padding: 16px 20px; border-right: 1px solid var(--line); background: var(--paper); }
.stock-row dd { margin: 0; padding: 16px 20px; }
@media (max-width: 640px) { .stock-row { grid-template-columns: 1fr; } .stock-row dt { border-right: 0; padding-bottom: 6px; } .stock-row dd { padding-top: 0; } }

/* ---------- spec table ---------- */
table.spec { border-collapse: collapse; width: 100%; font-size: .97rem; background: var(--white); border: 1px solid var(--line-2); }
table.spec th, table.spec td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.spec tr:last-child th, table.spec tr:last-child td { border-bottom: 0; }
table.spec th { width: 30%; font-family: var(--mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--cyan-deep); font-weight: 600; border-right: 1px solid var(--line); background: var(--paper); }
.table-scroll { overflow-x: auto; }

/* ---------- equipment data plates ---------- */
.plates { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
@media (max-width: 860px) { .plates { grid-template-columns: 1fr; } }
.plate { background: var(--white); border: 1px solid var(--line-2); }
.plate .plate-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 16px 20px 12px; border-bottom: 2px solid var(--ink); }
.plate .plate-head h3 { margin: 0; font-size: 1.05rem; text-transform: uppercase; }
.plate .tag { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; color: var(--cyan-deep); white-space: nowrap; }
.plate .ph { aspect-ratio: 4/3; border-bottom: 1px solid var(--line); }
.plate img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-bottom: 1px solid var(--line); }
.plate dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; margin: 0; padding: 16px 20px 20px; font-size: .93rem; }
.plate dt { font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); padding-top: 3px; }
.plate dd { margin: 0; }

/* ---------- parts for sale ---------- */
.parts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 900px) { .parts { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px) { .parts { grid-template-columns: 1fr; } }
.part { background: var(--white); border: 1px solid var(--line-2); display: flex; flex-direction: column; position: relative; }
.part img { aspect-ratio: 4/3; object-fit: contain; padding: 14px; background: #fff; }
.part .pn {
  position: absolute; top: 0; left: 0; background: var(--ink); color: #fff;
  font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; padding: 6px 12px;
}
.part .body { border-top: 1px solid var(--line); padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.part h3 { margin: 0; font-size: 1.05rem; text-transform: uppercase; }
.part .btn { margin-top: auto; align-self: flex-start; padding: 10px 16px; font-size: .82rem; }

/* ---------- CTA band ---------- */
.cta { background: var(--dark); color: #c9d4dd; padding: 72px 0; border-top: 4px solid var(--cyan); }
.cta h2 { color: #fff; }
.cta p { color: #a7b4bf; max-width: 40em; }

/* ---------- forms ---------- */
.form { max-width: 780px; }
.form fieldset { border: 0; padding: 0; margin: 0 0 10px; min-width: 0; }
.form legend {
  font-family: var(--mono); font-size: .8rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--cyan-deep); margin-bottom: 16px; padding: 0;
}
.field { margin-bottom: 20px; }
.field label { display: block; font-weight: 700; margin-bottom: 7px; font-size: .95rem; }
.field .hint { font-size: .87rem; color: var(--muted); margin-top: 6px; }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field input[type="date"],
.field textarea, .field select {
  width: 100%; font: inherit; padding: 12px 13px; border: 1px solid var(--line-2); border-radius: 2px;
  background: var(--white); color: var(--ink);
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--cyan); outline: 3px solid rgba(26,156,190,.22); outline-offset: 0; }
.field.invalid input, .field.invalid textarea { border-color: var(--danger); }
.field .err { color: var(--danger); font-size: .9rem; margin-top: 6px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 20px; }
@media (max-width: 580px) { .row2 { grid-template-columns: 1fr; } }
.req { color: var(--danger); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* file dropzone */
.drop {
  border: 2px dashed var(--line-2); padding: 32px 20px; text-align: center;
  background: var(--white); cursor: pointer; border-radius: 2px;
}
.drop:hover, .drop.over { border-color: var(--cyan); background: var(--cyan-ghost); }
.drop input { position: absolute; left: -9999px; }
.drop strong { color: var(--cyan-deep); }
.files { list-style: none; padding: 0; margin: 14px 0 0; }
.files li { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; padding: 11px 14px; border: 1px solid var(--line-2); margin-bottom: 8px; background: var(--white); font-size: .95rem; }
.files .name { font-weight: 700; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files .meta { color: var(--muted); font-size: .82rem; font-family: var(--mono); grid-column: 1 / -1; }
.files .bar { grid-column: 1 / -1; height: 5px; background: var(--line); overflow: hidden; }
.files .bar > span { display: block; height: 100%; width: 0; background: var(--cyan); transition: width .15s; }
.files li.done .bar > span { background: var(--ok); }
.files li.error { border-color: var(--danger); }
.files li.error .bar > span { background: var(--danger); }
.files .rm { background: none; border: 0; color: var(--muted); cursor: pointer; font-size: 1.15rem; line-height: 1; padding: 2px 6px; }
.files .rm:hover { color: var(--danger); }

.notice { padding: 16px 18px; margin: 0 0 20px; border: 1px solid; border-radius: 2px; }
.notice.ok { background: #eaf6ee; color: #14532d; border-color: #9fd4ae; }
.notice.bad { background: #fdeeec; color: #7f1d1d; border-color: #f0b6af; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 52px; }
@media (max-width: 820px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-grid address { font-style: normal; line-height: 1.7; }
.map { width: 100%; aspect-ratio: 4/3; border: 1px solid var(--line-2); }

/* ---------- title-block footer ---------- */
.site-footer { background: var(--dark); color: #8b99a6; font-size: .93rem; border-top: 4px solid var(--cyan); }
.tb { border-left: 1px solid var(--dark-line); border-right: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; }
.tb-cell { padding: 22px 24px 24px; border-left: 1px solid var(--dark-line); }
.tb-cell:first-child { border-left: 0; }
.tb-cell h4 { font-family: var(--mono); font-size: .7rem; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--cyan); margin: 0 0 12px; }
.tb-cell ul { list-style: none; margin: 0; padding: 0; }
.tb-cell li { margin-bottom: 7px; }
.tb-cell a { color: #cfd9e1; text-decoration: none; }
.tb-cell a:hover { color: #fff; text-decoration: underline; }
.tb-cell address { font-style: normal; color: #cfd9e1; }
.site-footer .legal { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; padding: 16px 0; font-family: var(--mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; }
.site-footer .legal a { color: #8b99a6; }
@media (max-width: 880px) { .tb { grid-template-columns: 1fr 1fr; } .tb-cell:nth-child(odd) { border-left: 0; } .tb-cell:nth-child(n+3) { border-top: 1px solid var(--dark-line); } }
@media (max-width: 520px) { .tb { grid-template-columns: 1fr; } .tb-cell { border-left: 0 !important; border-top: 1px solid var(--dark-line); } .tb-cell:first-child { border-top: 0; } }

/* ---------- misc ---------- */
.crosslist { list-style: none; padding: 0; }
.crosslist li { padding-left: 26px; position: relative; margin-bottom: .55em; }
.crosslist li::before { content: "+"; position: absolute; left: 2px; top: 0; color: var(--cyan); font-family: var(--mono); font-weight: 700; }

@media print { .site-header, .site-footer, .cta, .nav-toggle, .dwg-strip { display: none; } body { font-size: 12pt; background: #fff; } }