/* =====================================================================
   ADPP Construction — Industrial & Bold
   Design system + site styles. No dependencies, no build step.
   ===================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Brand */
  --ink:        #1A1A1A;   /* charcoal base            */
  --ink-900:    #141414;
  --ink-800:    #232323;
  --ink-700:    #2E2E2E;
  --steel:      #6B7280;   /* steel gray               */
  --steel-300:  #A6ABB3;
  --orange:     #FF6A00;   /* safety orange (accent)   */
  --orange-600: #E85D00;
  --orange-050: #FFF1E8;

  /* Surfaces */
  --bg:         #FFFFFF;
  --bg-soft:    #F5F5F4;   /* concrete white           */
  --bg-softer:  #ECECEA;
  --line:       rgba(20, 20, 20, 0.10);
  --line-strong:rgba(20, 20, 20, 0.16);

  /* Text */
  --tx:         #1A1A1A;
  --tx-soft:    #52555B;
  --tx-onink:   #F4F4F3;
  --tx-onink-soft: #B9BCC2;

  /* Type */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               Helvetica, Arial, sans-serif;
  --font-display: "Arial Narrow", "Helvetica Neue", var(--font-body);

  /* Rhythm */
  --wrap: 1180px;
  --gutter: clamp(20px, 5vw, 56px);
  --radius: 4px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.06), 0 2px 6px rgba(0,0,0,.05);
  --shadow-md: 0 8px 24px rgba(0,0,0,.10);
  --shadow-lg: 0 24px 60px rgba(0,0,0,.18);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--tx);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }

/* Skip link for accessibility */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ink); color: #fff; padding: 12px 18px;
}
.skip-link:focus { left: 12px; top: 12px; }

/* Focus ring */
:focus-visible { outline: 3px solid var(--orange); outline-offset: 2px; }

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  font-weight: 700;
  margin: 0 0 .4em;
  color: var(--ink);
}
.h-xxl { font-size: clamp(2.6rem, 7vw, 5.4rem); letter-spacing: -0.02em; }
.h-xl  { font-size: clamp(2rem, 5vw, 3.4rem); }
.h-lg  { font-size: clamp(1.5rem, 3.4vw, 2.3rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }

p { margin: 0 0 1.1rem; }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--tx-soft); line-height: 1.55; }

.eyebrow {
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: .22em;
  font-size: .78rem;
  font-weight: 700;
  color: var(--orange-600);
  margin: 0 0 1rem;
  display: inline-flex; align-items: center; gap: .6rem;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; background: var(--orange); display: inline-block;
}
.eyebrow.center { justify-content: center; }

.text-accent { color: var(--orange); }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(56px, 9vw, 120px); }
.section--tight { padding-block: clamp(40px, 6vw, 72px); }
.section--ink { background: var(--ink); color: var(--tx-onink); }
.section--ink h1, .section--ink h2, .section--ink h3 { color: #fff; }
.section--soft { background: var(--bg-soft); }

.grid { display: grid; gap: clamp(20px, 3vw, 34px); }
.center { text-align: center; }
.measure { max-width: 62ch; }
.measure-narrow { max-width: 48ch; }
.mx-auto { margin-inline: auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  font-weight: 700; letter-spacing: .02em;
  padding: .95rem 1.6rem; border-radius: var(--radius);
  border: 2px solid transparent; transition: transform .15s var(--ease), background .2s, color .2s, border-color .2s;
  text-transform: uppercase; font-size: .92rem; line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--orange); color: #fff; }
.btn--primary:hover { background: var(--orange-600); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--dark:hover { background: var(--ink-700); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--ink); }
.btn--on-ink { background: transparent; color: #fff; border-color: rgba(255,255,255,.3); }
.btn--on-ink:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn--lg { padding: 1.1rem 2rem; font-size: 1rem; }
.btn .arrow { transition: transform .2s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.nav__brand { display: flex; align-items: center; gap: .7rem; }

/* ---------- Adaptive brand lockup ----------
   Full site: badge + ADPP + full name.
   Small screens: the full name drops away, leaving badge + ADPP.
   Tiny (favicon): the badge alone. */
.brand { display: flex; align-items: center; gap: .68rem; }
.brand__badge { height: 42px; width: 42px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.02; }
.brand__acronym { font-family: var(--font-display); font-weight: 800; font-size: 1.55rem; letter-spacing: .03em; text-transform: uppercase; color: var(--ink); }
.brand__full { font-size: .66rem; font-weight: 700; letter-spacing: .34em; text-transform: uppercase; color: var(--orange-600); margin-top: .32rem; white-space: nowrap; }
/* Collapse the full name to just ADPP when space gets tight */
@media (max-width: 600px) { .brand__full { display: none; } }
/* Footer variant sits on dark */
.site-footer .brand__acronym { color: #fff; }
.site-footer .brand__badge { height: 46px; width: 46px; }
.site-footer .brand__full { color: var(--orange); }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.2rem); }
.nav__links a {
  font-weight: 600; font-size: .95rem; color: var(--ink); position: relative; padding: .4rem 0;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 2px; width: 0;
  background: var(--orange); transition: width .2s var(--ease);
}
.nav__links a:hover::after, .nav__links a[aria-current="page"]::after { width: 100%; }
.nav__cta { display: flex; align-items: center; gap: 1rem; }
.nav__phone { font-weight: 700; color: var(--ink); display: inline-flex; align-items: center; gap: .4rem; }

.nav__toggle {
  display: none; background: none; border: 0; width: 44px; height: 44px; position: relative;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: ""; position: absolute; left: 10px; width: 24px; height: 2.5px; background: var(--ink);
  transition: transform .2s var(--ease), opacity .2s;
}
.nav__toggle span { top: 21px; }
.nav__toggle span::before { top: -7px; }
.nav__toggle span::after { top: 7px; }
.nav__toggle[aria-expanded="true"] span { background: transparent; }
.nav__toggle[aria-expanded="true"] span::before { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span::after  { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 900px) {
  .nav__toggle { display: block; }
  .nav__menu {
    position: fixed; inset: 74px 0 auto 0; background: var(--ink); color: #fff;
    display: none; flex-direction: column; gap: 0; padding: 8px var(--gutter) 28px;
    border-bottom: 3px solid var(--orange);
  }
  .nav__menu.open { display: flex; }
  .nav__links { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__links a { color: #fff; padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,.12); }
  .nav__links a::after { display: none; }
  .nav__cta { flex-direction: column; align-items: stretch; margin-top: 1.2rem; gap: .8rem; }
  .nav__phone { color: #fff; justify-content: center; }
  .nav__cta .btn { width: 100%; }
}

/* ---------- Hero ---------- */
.hero { position: relative; background: var(--ink); color: var(--tx-onink); overflow: hidden; }
.hero__stripes {
  position: absolute; inset: 0; opacity: .06; pointer-events: none;
  background-image: repeating-linear-gradient(
    -45deg, var(--orange) 0 22px, transparent 22px 60px);
}
.hero__glow {
  position: absolute; width: 60vw; height: 60vw; right: -18vw; top: -22vw;
  background: radial-gradient(circle, rgba(255,106,0,.22), transparent 62%);
  pointer-events: none;
}
.hero__inner {
  position: relative; display: grid; grid-template-columns: 1.15fr .85fr;
  gap: clamp(28px, 5vw, 64px); align-items: center;
  padding-block: clamp(60px, 10vw, 128px);
}
.hero h1 { color: #fff; }
.hero h1 .stroke { color: transparent; -webkit-text-stroke: 1.5px var(--orange); }
.hero__lead { color: var(--tx-onink-soft); max-width: 46ch; font-size: clamp(1.05rem,1.6vw,1.3rem); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.hero__trust { display: flex; flex-wrap: wrap; gap: 1.4rem 2rem; margin-top: 2.6rem; }
.hero__trust li { display: flex; align-items: center; gap: .6rem; font-weight: 600; color: var(--tx-onink-soft); }
.hero__trust svg { color: var(--orange); flex: none; }

.hero__panel {
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
  border: 1px solid rgba(255,255,255,.09); border-radius: var(--radius-lg);
  padding: 2rem; box-shadow: var(--shadow-lg);
}
.hero__panel h3 { color: #fff; }
.trade-row { display: flex; align-items: center; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid rgba(255,255,255,.08); }
.trade-row:last-child { border-bottom: 0; }
.trade-row__ico {
  flex: none; width: 46px; height: 46px; border-radius: var(--radius); background: rgba(255,106,0,.12);
  display: grid; place-items: center; color: var(--orange);
}
.trade-row strong { display: block; color: #fff; font-size: 1.05rem; letter-spacing: .01em; }
.trade-row span { color: var(--tx-onink-soft); font-size: .9rem; }

@media (max-width: 860px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__panel { order: 2; }
}

/* ---------- Stat band ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; }
.stat { background: var(--bg); padding: clamp(1.4rem,3vw,2.2rem); text-align: center; }
.stat__num { font-family: var(--font-display); font-size: clamp(2.2rem,4vw,3.2rem); font-weight: 700; color: var(--ink); line-height: 1; }
.stat__num .u { color: var(--orange); }
.stat__label { text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; font-weight: 700; color: var(--tx-soft); margin-top: .5rem; }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Service cards ---------- */
.cards { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .cards { grid-template-columns: 1fr; } }
.card {
  position: relative; background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 2rem; overflow: hidden;
  transition: transform .25s var(--ease), box-shadow .25s, border-color .25s;
}
.card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 4px; width: 100%;
  background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-strong); }
.card:hover::before { transform: scaleX(1); }
.card__ico {
  width: 56px; height: 56px; border-radius: var(--radius); background: var(--orange-050);
  color: var(--orange-600); display: grid; place-items: center; margin-bottom: 1.2rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { color: var(--tx-soft); margin-bottom: 1.2rem; }
.card__list li { display: flex; gap: .55rem; align-items: flex-start; padding: .3rem 0; color: var(--tx-soft); font-size: .95rem; }
.card__list svg { color: var(--orange); flex: none; margin-top: .25rem; }
.card__more { margin-top: 1.4rem; font-weight: 700; color: var(--ink); display: inline-flex; align-items: center; gap: .4rem; text-transform: uppercase; font-size: .85rem; letter-spacing: .04em; }
.card__more:hover { color: var(--orange-600); }

/* ---------- Feature / split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.split--reverse .split__media { order: 2; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } .split--reverse .split__media { order: 0; } }

/* Intentional image placeholders (swap for real project photos) */
.ph {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  background:
    linear-gradient(135deg, var(--ink-800), var(--ink));
  border: 1px solid rgba(255,255,255,.08);
  aspect-ratio: 4 / 3; display: grid; place-items: center; color: var(--tx-onink-soft);
}
.ph::after {
  content: ""; position: absolute; inset: 0; opacity: .07;
  background-image: repeating-linear-gradient(-45deg, var(--orange) 0 14px, transparent 14px 34px);
}
.ph__label { position: relative; z-index: 1; text-align: center; text-transform: uppercase; letter-spacing: .14em; font-size: .72rem; font-weight: 700; padding: .6rem 1rem; }
.ph__corner { position: absolute; width: 26px; height: 26px; border: 3px solid var(--orange); z-index: 1; }
.ph__corner.tl { top: 14px; left: 14px; border-right: 0; border-bottom: 0; }
.ph__corner.br { bottom: 14px; right: 14px; border-left: 0; border-top: 0; }

.checklist li { display: flex; gap: .7rem; align-items: flex-start; padding: .55rem 0; }
.checklist svg { color: var(--orange); flex: none; margin-top: .3rem; }
.checklist strong { display: block; }
.checklist span { color: var(--tx-soft); font-size: .95rem; }

/* ---------- Process steps ---------- */
.steps { grid-template-columns: repeat(4, 1fr); counter-reset: step; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding-top: 1rem; }
.step__num {
  font-family: var(--font-display); font-weight: 700; font-size: 2.6rem; color: var(--orange);
  line-height: 1; margin-bottom: .6rem;
}
.step h3 { font-size: 1.1rem; }
.step p { color: var(--tx-onink-soft); font-size: .95rem; margin: 0; }
.section--ink .step p { color: var(--tx-onink-soft); }

/* ---------- Service areas ---------- */
.areas { display: flex; flex-wrap: wrap; gap: 1rem; }
.area-chip {
  display: inline-flex; align-items: center; gap: .55rem; padding: .7rem 1.1rem;
  border: 1px solid var(--line-strong); border-radius: 999px; font-weight: 700; background: var(--bg);
}
.area-chip svg { color: var(--orange); }

/* ---------- CTA band ---------- */
.cta-band { position: relative; overflow: hidden; }
.cta-band .hero__stripes { opacity: .05; }
.cta-inner { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; }

/* ---------- Testimonial ---------- */
.quote { border-left: 4px solid var(--orange); padding-left: 1.6rem; }
.quote p { font-size: clamp(1.2rem, 2.4vw, 1.7rem); font-family: var(--font-display); text-transform: none; letter-spacing: 0; line-height: 1.35; color: var(--ink); }
.quote cite { font-style: normal; font-weight: 700; color: var(--tx-soft); }

/* ---------- Forms ---------- */
.form { display: grid; gap: 1.1rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 620px) { .form__row { grid-template-columns: 1fr; } }
.field { display: grid; gap: .4rem; }
.field label { font-weight: 700; font-size: .9rem; }
.field .req { color: var(--orange-600); }
.field input, .field select, .field textarea {
  width: 100%; padding: .85rem .9rem; border: 1.5px solid var(--line-strong);
  border-radius: var(--radius); font: inherit; background: var(--bg); color: var(--tx);
  transition: border-color .15s, box-shadow .15s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--orange); box-shadow: 0 0 0 3px var(--orange-050);
}
.field .hint { font-size: .82rem; color: var(--tx-soft); }
.form__note { font-size: .85rem; color: var(--tx-soft); }
.form__status { padding: 1rem; border-radius: var(--radius); font-weight: 600; display: none; }
.form__status.show { display: block; }
.form__status.ok { background: #E7F6EC; color: #1B7A3D; border: 1px solid #B6E2C4; }
.form__status.err { background: #FDECEC; color: #B02525; border: 1px solid #F3C2C2; }

/* ---------- Contact info cards ---------- */
.contact-grid { grid-template-columns: 1.1fr .9fr; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.info-list li { display: flex; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.info-list li:last-child { border-bottom: 0; }
.info-list .ico { width: 44px; height: 44px; flex: none; border-radius: var(--radius); background: var(--orange-050); color: var(--orange-600); display: grid; place-items: center; }
.info-list strong { display: block; }
.info-list a, .info-list span { color: var(--tx-soft); }
.info-list a:hover { color: var(--orange-600); }

/* ---------- FAQ ---------- */
.faq details { border-bottom: 1px solid var(--line); padding: 1.1rem 0; }
.faq summary { font-family: var(--font-display); text-transform: uppercase; font-weight: 700; font-size: 1.05rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--orange); font-size: 1.6rem; line-height: 1; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 1rem 0 0; color: var(--tx-soft); }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink-900); color: var(--tx-onink-soft); }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: clamp(24px,4vw,48px); padding-block: clamp(48px,7vw,80px); }
@media (max-width: 860px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-top { grid-template-columns: 1fr; } }
.footer-brand .brand { margin-bottom: 1.1rem; }
.footer-brand p { max-width: 40ch; font-size: .95rem; }
.footer h4 { color: #fff; font-size: .85rem; letter-spacing: .14em; margin-bottom: 1rem; }
.footer a { color: var(--tx-onink-soft); display: inline-block; padding: .3rem 0; font-size: .95rem; }
.footer a:hover { color: var(--orange); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-block: 1.4rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; font-size: .85rem; }
.footer-bottom a:hover { color: var(--orange); }

/* ---------- Page hero (interior pages) ---------- */
.page-hero { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.page-hero .hero__stripes { opacity: .05; }
.page-hero__inner { position: relative; padding-block: clamp(52px, 8vw, 96px); }
.page-hero h1 { color: #fff; }
.page-hero p { color: var(--tx-onink-soft); max-width: 56ch; }
.breadcrumb { font-size: .82rem; color: var(--tx-onink-soft); margin-bottom: 1.2rem; letter-spacing: .04em; }
.breadcrumb a:hover { color: var(--orange); }

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Utilities ---------- */
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.6rem; } .mt-4 { margin-top: 2.4rem; }
.stack > * + * { margin-top: 1.1rem; }
.flex { display: flex; } .items-center { align-items: center; } .gap-1 { gap: 1rem; } .wrap-flex { flex-wrap: wrap; }
.hide-mobile { }
@media (max-width: 900px) { .hide-mobile { display: none !important; } }