/* ============================================================
   Warwick Tunnelling · warwicktunnelling.com
   Brand: cream #F5F1E8 · ink #161616 · forest green #1D6B3A
   Type:  Barlow Condensed (display) · Inter Tight (body)
          IBM Plex Mono (technical accents)
   ============================================================ */

:root {
  --cream: #F5F1E8;
  --cream-dim: #EAE4D6;
  --ink: #161616;
  --ink-soft: #222220;
  --green: #1D6B3A;
  --green-deep: #14522C;
  --green-dark: #0E3D20;
  --green-bright: #2E8B4F;
  --display: "Barlow Condensed", sans-serif;
  --body: "Inter Tight", sans-serif;
  --mono: "IBM Plex Mono", monospace;
  --halo: var(--ink); /* background halo behind cutterhead spokes */
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--body);
  background: var(--cream);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; }

::selection { background: var(--green); color: var(--cream); }

/* ---------- Typography ---------- */
h1, h2, h3 {
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: 0.01em;
}
.kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-bottom: 1.1rem;
}
.kicker::before {
  content: "";
  width: 2.2em; height: 2px;
  background: currentColor;
}
.section-title { font-size: clamp(2.6rem, 6vw, 4.6rem); margin-bottom: 1.4rem; }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.25rem); max-width: 38em; }

/* ---------- Layout ---------- */
.wrap { width: min(1120px, 92vw); margin: 0 auto; }
section { position: relative; padding: clamp(4rem, 9vw, 7.5rem) 0; }

/* Theme blocks */
.block-ink   { background: var(--ink);   color: var(--cream); --halo: var(--ink); }
.block-green { background: var(--green-deep); color: var(--cream); --halo: var(--green-deep); }
.block-cream { background: var(--cream); color: var(--ink); --halo: var(--cream); }

/* Strata divider: jagged soil-layer edge between blocks.
   --top = colour of the section above, --bottom = section below. */
.strata {
  height: 42px;
  margin-top: -1px;
  position: relative;
  background: var(--bottom, var(--cream));
}
.strata::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--top, var(--ink));
  clip-path: polygon(0 0, 4% 55%, 9% 20%, 15% 70%, 22% 35%, 28% 80%,
    35% 30%, 42% 65%, 50% 25%, 57% 75%, 64% 40%, 71% 85%, 78% 35%,
    85% 70%, 92% 30%, 100% 60%, 100% 0);
}
.s-ink-green   { --top: var(--ink);        --bottom: var(--green-deep); }
.s-ink-cream   { --top: var(--ink);        --bottom: var(--cream); }
.s-cream-green { --top: var(--cream);      --bottom: var(--green-deep); }
.s-green-ink   { --top: var(--green-deep); --bottom: var(--ink); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.7rem clamp(1rem, 4vw, 2.5rem);
  background: color-mix(in srgb, var(--ink) 88%, transparent);
  backdrop-filter: blur(10px);
  color: var(--cream);
  border-bottom: 1px solid rgba(245, 241, 232, 0.12);
}
.nav-brand {
  display: flex; align-items: center; gap: 0.7rem;
  text-decoration: none;
}
.nav-brand svg { width: 40px; height: 40px; }
.nav-brand span {
  font-family: var(--display); font-weight: 700; font-size: 1.35rem;
  text-transform: uppercase; letter-spacing: 0.04em;
}
.nav-links { display: flex; gap: clamp(1rem, 2.5vw, 2.2rem); list-style: none; }
.nav-links a {
  font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.14em;
  text-transform: uppercase; text-decoration: none;
  padding: 0.4em 0; position: relative; opacity: 0.85;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--green-bright);
  transition: width 0.25s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--green-bright); opacity: 1; }
.nav-toggle {
  display: none; background: none; border: none; color: var(--cream);
  font-size: 1.6rem; cursor: pointer; line-height: 1;
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--ink);
    border-bottom: 2px solid var(--green);
    max-height: 0; overflow: hidden; transition: max-height 0.3s ease;
  }
  .nav-links.open { max-height: 320px; }
  .nav-links li { border-top: 1px solid rgba(245,241,232,0.08); }
  .nav-links a { display: block; padding: 0.9rem clamp(1rem, 4vw, 2.5rem); }
}

/* ---------- Depth gauge ---------- */
.depth-gauge {
  position: fixed; right: 0.8rem; top: 50%; transform: translateY(-50%);
  width: 6.6rem; /* fixed width so the track never shifts sideways */
  z-index: 90; display: flex; flex-direction: column; align-items: center;
  gap: 0.6rem; pointer-events: none;
  font-family: var(--mono);
}
.depth-track {
  width: 4px; height: 56vh; background: rgba(128,128,128,0.35);
  border-radius: 2px; position: relative;
}
.depth-fill {
  position: absolute; top: 0; left: 0; width: 100%; height: 0%;
  background: var(--green-bright); border-radius: 2px;
}
.depth-marker {
  position: absolute; left: 50%; transform: translate(-50%, -50%);
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--green-bright); border: 3px solid var(--cream);
  box-shadow: 0 0 0 2px var(--green-dark);
}
.depth-readout {
  font-size: 0.72rem; letter-spacing: 0.08em; text-align: center;
  color: var(--ink); font-weight: 500;
  background: var(--cream);
  border: 2px solid var(--green);
  padding: 0.25em 0.55em; border-radius: 3px; white-space: nowrap;
}
.depth-label {
  font-size: 0.6rem; letter-spacing: 0.2em;
  writing-mode: vertical-rl; color: var(--cream);
  background: rgba(22, 22, 22, 0.55);
  padding: 0.5em 0.25em; border-radius: 3px;
}
@media (max-width: 900px) { .depth-gauge { display: none; } }

/* ---------- Hero ---------- */
.hero {
  min-height: 100svh;
  display: flex; align-items: center;
  padding-top: 5rem;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(29,107,58,0.22), transparent 65%),
    var(--ink);
  color: var(--cream);
  --halo: var(--ink);
}
.hero-grid {
  display: grid; grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(2rem, 5vw, 4rem); align-items: center;
}
.hero h1 {
  font-size: clamp(3.6rem, 9.5vw, 8rem);
  font-weight: 700;
}
.hero h1 .accent { color: var(--green-bright); }
.hero-sub {
  font-family: var(--mono); font-size: clamp(0.85rem, 1.4vw, 1rem);
  color: var(--green-bright); letter-spacing: 0.12em;
  margin: 1.4rem 0 1rem;
}
.hero p.lede { opacity: 0.85; }
.hero-ctas { display: flex; gap: 1rem; margin-top: 2.2rem; flex-wrap: wrap; }

.cutterhead-stage { position: relative; display: grid; place-items: center; }
.cutterhead-stage svg { width: min(420px, 80vw); height: auto; }
.spin {
  animation: spin 26s linear infinite;
  animation-play-state: var(--spin-state, running);
  transform-box: view-box;
  transform-origin: 100px 100px;
}
:root { --logo-green: #1D6B3A; }
.nav, footer, .hero, .page-hero, .block-ink, .block-green { --logo-green: #2E8B4F; }
.nav, footer { --spin-state: paused; --halo: var(--ink); }
.page-hero { --halo: var(--ink); }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .spin { animation: none; }
  html { scroll-behavior: auto; }
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .cutterhead-stage { order: -1; margin-top: 1rem; }
  .cutterhead-stage svg { width: min(260px, 62vw); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; text-decoration: none;
  font-family: var(--display); font-weight: 600; text-transform: uppercase;
  font-size: 1.15rem; letter-spacing: 0.05em;
  padding: 0.7em 1.6em; border: 2px solid var(--green-bright);
  transition: all 0.2s ease;
}
.btn-solid { background: var(--green); border-color: var(--green); color: var(--cream); }
.btn-solid:hover { background: var(--green-bright); border-color: var(--green-bright); transform: translateY(-2px); }
.btn-ghost { color: var(--cream); background: transparent; }
.btn-ghost:hover { background: var(--green-bright); color: var(--ink); transform: translateY(-2px); }
.block-cream .btn-ghost { color: var(--ink); border-color: var(--green); }
.block-cream .btn-ghost:hover { background: var(--green); color: var(--cream); }

/* ---------- Stats ---------- */
.stat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px; background: rgba(245,241,232,0.18);
  border: 1px solid rgba(245,241,232,0.18);
}
.block-cream .stat-grid { background: rgba(22,22,22,0.15); border-color: rgba(22,22,22,0.15); }
.stat {
  background: inherit; padding: 2rem 1.5rem; text-align: center;
}
.block-green .stat { background: var(--green-deep); }
.block-ink .stat { background: var(--ink); }
.block-cream .stat { background: var(--cream); }
.stat-num {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(3rem, 5.5vw, 4.4rem); line-height: 1;
  color: var(--green-bright);
}
.block-cream .stat-num { color: var(--green); }
.stat-unit { font-size: 0.5em; vertical-align: 0.5em; margin-left: 0.08em; }
.stat-label {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; margin-top: 0.7rem; opacity: 0.75;
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem; margin-top: 2.6rem;
}
.card {
  border: 2px solid var(--ink);
  padding: 1.8rem 1.6rem;
  background: var(--cream);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--green); }
.block-ink .card, .block-green .card {
  border-color: rgba(245,241,232,0.25); background: transparent;
}
.block-ink .card:hover, .block-green .card:hover { box-shadow: 6px 6px 0 var(--green-bright); }
.card h3 { font-size: 1.7rem; margin-bottom: 0.6rem; }
.card .tag {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--green);
  display: block; margin-bottom: 0.8rem;
}
.block-ink .tag, .block-green .tag { color: var(--green-bright); }
.card p { font-size: 0.95rem; opacity: 0.85; }

/* ---------- Team ---------- */
.avatar {
  width: 64px; height: 64px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--green); color: var(--cream);
  font-family: var(--display); font-weight: 700; font-size: 1.5rem;
  margin-bottom: 1.1rem; letter-spacing: 0.02em;
}
.card .role {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--green); display: block; margin-bottom: 0.7rem;
}
.block-ink .card .role, .block-green .card .role { color: var(--green-bright); }

/* ---------- Big contact link ---------- */
.contact-big {
  font-family: var(--display); font-weight: 700; text-transform: uppercase;
  font-size: clamp(1.8rem, 5.5vw, 4rem); line-height: 1.1;
  text-decoration: none; border-bottom: 4px solid var(--green-bright);
  word-break: break-all;
  transition: color 0.2s ease;
}
.contact-big:hover { color: var(--green-bright); }

/* ---------- Two-column feature ---------- */
.feature {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem); align-items: center;
}
@media (max-width: 820px) { .feature { grid-template-columns: 1fr; } }

/* ---------- Spec table ---------- */
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; margin-top: 1.6rem; }
.spec-table th, .spec-table td { padding: 0.85em 1em; text-align: left; border-bottom: 1px solid rgba(22,22,22,0.18); }
.block-ink .spec-table th, .block-ink .spec-table td,
.block-green .spec-table th, .block-green .spec-table td { border-color: rgba(245,241,232,0.18); }
.spec-table th { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; opacity: 0.65; }
.spec-table td:last-child { font-family: var(--mono); font-size: 0.88rem; }

/* ---------- Timeline ---------- */
.timeline { list-style: none; margin-top: 2.4rem; position: relative; padding-left: 2rem; }
.timeline::before {
  content: ""; position: absolute; left: 6px; top: 6px; bottom: 6px;
  width: 3px; background: var(--green); border-radius: 2px;
}
.timeline li { position: relative; padding: 0 0 2rem 1.4rem; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li::before {
  content: ""; position: absolute; left: -2rem; top: 6px;
  width: 15px; height: 15px; border-radius: 50%;
  background: var(--cream); border: 3px solid var(--green);
}
.timeline .when { font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--green); display: block; }
.block-ink .timeline .when, .block-green .timeline .when { color: var(--green-bright); }
.timeline h3 { font-size: 1.5rem; margin: 0.2rem 0 0.3rem; }
.timeline p { font-size: 0.95rem; opacity: 0.85; max-width: 34em; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Marquee ---------- */
.dig-marquee {
  overflow: hidden; white-space: nowrap;
  background: var(--green-dark); color: var(--cream);
  padding: 0.55rem 0; border-top: 2px solid var(--green); border-bottom: 2px solid var(--green);
}
.marquee-track {
  display: inline-flex; white-space: nowrap; will-change: transform;
  animation: marquee 22s linear infinite;
}
.dig-marquee span {
  display: inline-block; font-family: var(--display); font-weight: 700;
  font-size: 1.3rem; letter-spacing: 0.28em; text-transform: uppercase;
}
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) { .marquee-track { animation: none; } }

/* ---------- Page hero (subpages) ---------- */
.page-hero {
  padding: 9.5rem 0 4.5rem;
  background:
    radial-gradient(ellipse 70% 80% at 80% 20%, rgba(29,107,58,0.25), transparent 60%),
    var(--ink);
  color: var(--cream);
}
.page-hero h1 { font-size: clamp(3rem, 8vw, 6.5rem); }
.page-hero .lede { margin-top: 1.2rem; opacity: 0.85; }

/* ---------- Footer ---------- */
footer {
  background: var(--ink); color: var(--cream);
  padding: 4rem 0 2rem; --halo: var(--ink);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem; margin-bottom: 3rem;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-brand { display: flex; align-items: flex-start; gap: 1rem; }
.footer-brand svg { width: 56px; height: 56px; flex-shrink: 0; }
.footer-brand strong { font-family: var(--display); font-size: 1.5rem; text-transform: uppercase; display: block; line-height: 1.1; }
.footer-brand p { font-size: 0.85rem; opacity: 0.65; margin-top: 0.4rem; max-width: 26em; }
footer h4 {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--green-bright); margin-bottom: 1rem;
}
footer ul { list-style: none; }
footer ul li { margin-bottom: 0.55rem; }
footer ul a { text-decoration: none; font-size: 0.92rem; opacity: 0.8; }
footer ul a:hover { opacity: 1; color: var(--green-bright); }
.footer-base {
  border-top: 1px solid rgba(245,241,232,0.14); padding-top: 1.4rem;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.8rem;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.1em; opacity: 0.55;
}