/* ============================================================
   JackCAD — "drawing sheet" design system
   Display: Space Grotesk · Body: IBM Plex Sans · Data: IBM Plex Mono
   Palette derived from the CAD/survey world:
   graphite ink canvas · drafting hairlines · survey orange · CAD cyan
   ============================================================ */

:root {
  --ink:        #0e1a24;   /* CAD model-space / dark canvas */
  --ink-2:      #15263314;
  --ink-solid2: #16283500;
  --paper:      #ffffff;   /* drawing sheet */
  --paper-2:    #f4f7f9;
  --paper-3:    #eef2f5;
  --line:       #d5dee4;   /* drafting hairline */
  --line-2:     #bccad3;
  --text:       #17242e;
  --graphite:   #56666f;   /* muted */
  --survey:     #ff5a1f;   /* surveyor orange — the signature accent */
  --survey-dk:  #e14a12;
  --cad:        #12aec6;   /* CAD linework cyan */
  --cad-soft:   #7fd6e4;
  --wa:         #1eaa5c;
  --wa-dk:      #178a4a;
  --wrap: 1180px;
  --f-disp: "Space Grotesk", "IBM Plex Sans", sans-serif;
  --f-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--f-body);
  color: var(--text);
  background: var(--paper);
  line-height: 1.6;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  /* faint engineering grid across the whole page */
  background-image:
    linear-gradient(var(--paper-3) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-3) 1px, transparent 1px);
  background-size: 28px 28px;
}
img { max-width: 100%; display: block; }
a { color: var(--survey-dk); text-decoration: none; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* ---- data label (mono eyebrow) : encodes sheet/station info ---- */
.tag {
  font-family: var(--f-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--survey-dk);
  display: inline-flex;
  align-items: center;
  gap: .6em;
}
.tag::before {
  content: "";
  width: 22px; height: 2px; background: var(--survey);
}
.tag.on-dark { color: var(--survey); }

/* ---- headings ---- */
h1, h2, h3 { font-family: var(--f-disp); color: var(--ink); font-weight: 600; line-height: 1.08; margin: 0 0 .4em; letter-spacing: -.015em; }
h1 { font-size: clamp(2.3rem, 5.2vw, 4rem); font-weight: 700; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.6rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.lead { font-size: 1.18rem; color: var(--graphite); max-width: 56ch; }
.mono { font-family: var(--f-mono); }

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  font-family: var(--f-mono); font-weight: 500; font-size: .92rem;
  letter-spacing: .02em; padding: 14px 24px; cursor: pointer;
  border: 1.5px solid var(--ink); background: var(--ink); color: #fff;
  border-radius: 2px; transition: .15s ease;
}
.btn:hover { background: #000; border-color: #000; }
.btn svg { width: 18px; height: 18px; }
.btn-survey { background: var(--survey); border-color: var(--survey); color: #fff; }
.btn-survey:hover { background: var(--survey-dk); border-color: var(--survey-dk); }
.btn-wa { background: var(--wa); border-color: var(--wa); color: #fff; }
.btn-wa:hover { background: var(--wa-dk); border-color: var(--wa-dk); }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: #fff; }
.btn-line.on-dark { color: #fff; border-color: rgba(255,255,255,.4); }
.btn-line.on-dark:hover { background: #fff; color: var(--ink); border-color:#fff; }
.btn-lg { padding: 16px 30px; font-size: 1rem; }

/* ============================================================
   HEADER
   ============================================================ */
.site-head {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand img { height: 22px; width: auto; }
.brand .bmark {
  font-family: var(--f-disp); font-weight: 700; font-size: 1.3rem; color: var(--ink);
  letter-spacing: -.02em;
}
.brand .bmark b { color: var(--survey); }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 30px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  font-family: var(--f-mono); font-size: .82rem; letter-spacing: .04em;
  color: var(--text); text-transform: uppercase;
}
.nav-links a:hover, .nav-links a.active { color: var(--survey-dk); }
.nav-links a.active { position: relative; }
.nav-cta { display: flex; align-items: center; gap: 14px; }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ============================================================
   HERO — dark model space + drawn signature
   ============================================================ */
.hero { background: var(--ink); color: #dfe8ee; position: relative; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 32px 32px;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center; padding: 88px 0 96px; }
.hero h1 { color: #fff; }
.hero h1 em { font-style: normal; color: var(--survey); }
.hero p { color: #a9bcc7; font-size: 1.18rem; max-width: 46ch; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-specs { display: flex; flex-wrap: wrap; gap: 26px; margin-top: 40px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.12); }
.hero-specs .spec .n { font-family: var(--f-disp); font-size: 1.5rem; color: #fff; font-weight: 600; }
.hero-specs .spec .l { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: #7d93a0; }

/* the drawing signature */
.drawing { position: relative; }
.drawing svg { width: 100%; height: auto; display: block; }
.draw-path { stroke-dasharray: 1400; stroke-dashoffset: 1400; animation: draw 2.4s ease forwards; }
.draw-path.d2 { animation-delay: .5s; }
.draw-path.d3 { animation-delay: .9s; }
.draw-path.d4 { animation-delay: 1.2s; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .draw-path { animation: none; stroke-dashoffset: 0; }
}

/* ============================================================
   SECTIONS
   ============================================================ */
.block { padding: 92px 0; }
.block.tint { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec-head { max-width: 60ch; margin-bottom: 44px; }
.sec-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* about split */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.spec-list { list-style: none; margin: 20px 0 0; padding: 0; }
.spec-list li { display: flex; gap: 14px; padding: 14px 0; border-top: 1px solid var(--line); font-family: var(--f-mono); font-size: .9rem; }
.spec-list li b { color: var(--survey-dk); font-weight: 500; min-width: 62px; }
.spec-list li span { color: var(--text); }

/* module "sheets" */
.sheets { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border: 1px solid var(--line-2); background: var(--paper); }
.sheet { padding: 30px 28px 34px; border-right: 1px solid var(--line-2); position: relative; }
.sheet:last-child { border-right: 0; }
.sheet .sheet-no { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .14em; color: var(--graphite); text-transform: uppercase; }
.sheet .draw-mini { margin: 18px 0 22px; height: 120px; display: flex; align-items: center; justify-content: center; background: var(--ink); border-radius: 2px; }
.sheet .draw-mini svg { width: 92%; height: 100px; }
.sheet h3 { margin-bottom: .3em; }
.sheet p { color: var(--graphite); font-size: .96rem; margin: 0; }

/* process — real drawing stations */
.stations { display: grid; grid-template-columns: repeat(3,1fr); gap: 30px; margin-top: 44px; }
.station { position: relative; padding-top: 26px; border-top: 2px solid var(--ink); }
.station .sta { font-family: var(--f-mono); font-size: .78rem; color: var(--survey-dk); letter-spacing: .08em; }
.station h3 { margin: 10px 0 .3em; }
.station p { color: var(--graphite); margin: 0; font-size: .96rem; }

/* clients / trust strip */
.clients { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.clients .cell { background: var(--paper); display: flex; align-items: center; justify-content: center; padding: 30px 24px; min-height: 118px; }
.clients .cell img { max-height: 52px; max-width: 150px; width: auto; object-fit: contain; filter: grayscale(1); opacity: .72; transition: .2s; }
.clients .cell:hover img { filter: grayscale(0); opacity: 1; }

/* CTA band */
.cta {
  background: var(--ink); color: #fff; padding: 64px 56px; position: relative; overflow: hidden;
}
.cta::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 30px 30px;
}
.cta > * { position: relative; }
.cta h2 { color: #fff; }
.cta p { color: #a9bcc7; max-width: 48ch; }
.cta .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

/* ============================================================
   DOWNLOAD
   ============================================================ */
.dl-row {
  display: flex; align-items: center; gap: 24px; padding: 28px;
  border: 1px solid var(--line-2); background: var(--paper); margin-bottom: 18px;
}
.dl-row .dl-ico { width: 60px; height: 60px; flex: none; background: var(--ink); display: grid; place-items: center; border-radius: 2px; }
.dl-row .dl-ico svg { width: 30px; height: 30px; stroke: var(--cad); }
.dl-row .dl-meta { flex: 1; }
.dl-row .dl-meta h3 { margin: 0 0 .2em; }
.dl-row .dl-meta p { margin: 0; color: var(--graphite); font-size: .95rem; }
.docs { list-style: none; margin: 0; padding: 0; }
.docs li { display: flex; align-items: center; gap: 16px; padding: 18px 20px; border: 1px solid var(--line); border-top: 0; background: var(--paper); }
.docs li:first-child { border-top: 1px solid var(--line); }
.docs .fmt { margin-left: auto; font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; color: var(--survey-dk); border: 1px solid var(--line-2); padding: 4px 10px; }
.docs svg { width: 22px; height: 22px; stroke: var(--graphite); }

/* ============================================================
   SUBSCRIBE
   ============================================================ */
.order {
  max-width: 620px; margin: 0 auto; border: 1px solid var(--line-2); background: var(--paper);
}
.order-head { background: var(--ink); color: #fff; padding: 30px 34px; display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.order-head .price { font-family: var(--f-disp); font-size: 2.4rem; font-weight: 700; }
.order-head .per { font-family: var(--f-mono); color: var(--cad-soft); font-size: .85rem; letter-spacing: .05em; }
.order-head .code { font-family: var(--f-mono); font-size: .72rem; color: #7d93a0; letter-spacing: .12em; }
.order-body { padding: 34px; }
.fld { margin-bottom: 24px; }
.fld label { display: block; font-family: var(--f-mono); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--graphite); margin-bottom: 9px; }
.fld select {
  width: 100%; padding: 15px 16px; font-size: 1rem; font-family: var(--f-body);
  border: 1.5px solid var(--line-2); border-radius: 2px; background: var(--paper); color: var(--text);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2356666f' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
}
.fld select:focus { outline: none; border-color: var(--survey); }
.order-total { display: flex; align-items: baseline; justify-content: space-between; padding: 22px 0; border-top: 1px dashed var(--line-2); border-bottom: 1px dashed var(--line-2); margin-bottom: 26px; }
.order-total .lbl { font-family: var(--f-mono); font-size: .8rem; letter-spacing: .08em; text-transform: uppercase; color: var(--graphite); }
.order-total .amt { font-family: var(--f-disp); font-size: 1.9rem; font-weight: 700; color: var(--ink); }
.order-body .btn-wa { width: 100%; justify-content: center; }
.fineprint { font-family: var(--f-mono); font-size: .76rem; color: var(--graphite); text-align: center; margin-top: 16px; line-height: 1.7; }

/* ============================================================
   CONTACT
   ============================================================ */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.cinfo { list-style: none; margin: 0; padding: 0; }
.cinfo li { display: flex; gap: 16px; padding: 20px 0; border-top: 1px solid var(--line); }
.cinfo li:first-child { border-top: 0; }
.cinfo .ci-ico { width: 44px; height: 44px; flex: none; background: var(--paper-2); border: 1px solid var(--line); display: grid; place-items: center; }
.cinfo .ci-ico svg { width: 20px; height: 20px; stroke: var(--survey-dk); }
.cinfo .k { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--graphite); }
.cinfo .v { color: var(--ink); font-weight: 500; }
.cform { border: 1px solid var(--line-2); padding: 30px; background: var(--paper); }
.cform .fld input {
  width: 100%; padding: 14px 15px; font-size: 1rem; font-family: var(--f-body);
  border: 1.5px solid var(--line-2); border-radius: 2px; background: var(--paper); color: var(--text);
}
.cform .fld input:focus { outline: none; border-color: var(--survey); }
.cform .btn { width: 100%; justify-content: center; }

/* ============================================================
   FOOTER — title block
   ============================================================ */
.site-foot { background: var(--ink); color: #91a6b2; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding: 60px 0 34px; }
.site-foot h4 { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: #6f8794; margin: 0 0 16px; }
.site-foot .brand .bmark { color: #fff; }
.site-foot p { color: #91a6b2; font-size: .95rem; }
.site-foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.site-foot ul a { font-family: var(--f-mono); font-size: .84rem; color: #91a6b2; letter-spacing: .02em; }
.site-foot ul a:hover { color: #fff; }
/* title-block style bottom bar */
.titleblock { border-top: 1px solid rgba(255,255,255,.14); display: grid; grid-template-columns: repeat(4, 1fr); }
.titleblock .tb { padding: 16px 0; border-right: 1px solid rgba(255,255,255,.14); font-family: var(--f-mono); font-size: .72rem; }
.titleblock .tb:last-child { border-right: 0; text-align: right; }
.titleblock .tb .k { color: #63798a; letter-spacing: .1em; display: block; margin-bottom: 3px; }
.titleblock .tb .v { color: #cdd9e0; }

/* floating WA */
.wa-float { position: fixed; right: 20px; bottom: 20px; z-index: 60; width: 54px; height: 54px; border-radius: 50%; background: var(--wa); color: #fff; display: grid; place-items: center; box-shadow: 0 8px 24px rgba(30,170,92,.4); }
.wa-float:hover { background: var(--wa-dk); }
.wa-float svg { width: 28px; height: 28px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner, .split, .contact { grid-template-columns: 1fr; }
  .hero-inner { padding: 60px 0 70px; gap: 44px; }
  .drawing { order: -1; }
  .sheets, .stations, .clients { grid-template-columns: 1fr; }
  .sheet { border-right: 0; border-bottom: 1px solid var(--line-2); }
  .clients .cell { border-bottom: 1px solid var(--line); }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .titleblock { grid-template-columns: 1fr 1fr; }
  .titleblock .tb:nth-child(2) { border-right: 0; }
  .cta { padding: 44px 26px; }
}
@media (max-width: 620px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line); padding: 6px 0; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 13px 24px; }
  .nav-cta .btn { display: none; }
  .block { padding: 60px 0; }
  .clients { grid-template-columns: 1fr 1fr; }
  .foot-grid { grid-template-columns: 1fr; gap: 30px; }
}