/* =====================================================================
   Double Impact (UAE) — DI-STD-001 "Modern Construction — Signal Red Edition"
   All colour + type tokens defined once in :root. Swap here to re-theme.
   ===================================================================== */

:root {
  /* --- Colour tokens --- */
  --charcoal:   #1A1A1C;   /* primary / dark sections */
  --graphite:   #2C2C30;   /* secondary dark */
  --concrete:   #6E6E73;   /* muted body text */
  --aggregate:  #ECEDEF;   /* light surface */
  --paper:      #FFFFFF;   /* base */
  --signal-red: #A4161A;   /* accent — the only accent */
  --oxblood:    #7A1118;   /* hover / pressed */
  --rose-mist:  #F6E7E8;   /* sparing tint */

  /* --- Type tokens --- */
  --font-display: "Archivo", system-ui, sans-serif;      /* 800/900 uppercase */
  --font-head:    "Barlow Condensed", system-ui, sans-serif; /* 600/700 uppercase */
  --font-body:    "Barlow", system-ui, sans-serif;
  --font-mono:    "B612 Mono", ui-monospace, monospace;  /* numerals, codes, stats */

  /* --- Rhythm --- */
  --spine: 4px;
  --wrap-max: 1200px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section-y: clamp(4rem, 9vw, 8rem);
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  line-height: 1.6;
  color: var(--charcoal);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3 { margin: 0; line-height: 1.02; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.wrap { width: 100%; max-width: var(--wrap-max); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link {
  position: absolute; left: 0; top: -3rem;
  background: var(--signal-red); color: #fff; padding: .6rem 1rem;
  font-family: var(--font-head); text-transform: uppercase; letter-spacing: .05em;
  z-index: 200; transition: top .15s;
}
.skip-link:focus { top: 0; }

:focus-visible { outline: 3px solid var(--signal-red); outline-offset: 2px; }
.hero :focus-visible, .contact :focus-visible, .site-header :focus-visible,
.site-footer :focus-visible { outline-color: #fff; }

/* =====================================================================
   Buttons
   ===================================================================== */
.btn {
  --btn-pad-y: .85rem; --btn-pad-x: 1.6rem;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em; font-size: .95rem;
  text-decoration: none; cursor: pointer; border: 2px solid transparent;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  transition: background-color .18s, color .18s, border-color .18s, transform .18s;
}
.btn:active { transform: translateY(1px); }
.btn-red { background: var(--signal-red); color: #fff; }
.btn-red:hover { background: var(--oxblood); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }
.btn-block { width: 100%; }

/* =====================================================================
   Header
   ===================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--charcoal);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 84px; }
.brand-logo { height: 48px; width: auto; }
.site-header .brand-logo { height: 52px; }

.nav { display: flex; align-items: center; }
.nav-menu { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2rem); }
.nav-menu a {
  font-family: var(--font-head); text-transform: uppercase; letter-spacing: .05em;
  font-weight: 600; font-size: .9rem; color: var(--aggregate); text-decoration: none;
  padding: .4rem 0; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.nav-menu a:hover { color: #fff; border-bottom-color: var(--signal-red); }
.nav-cta a { border-bottom: none !important; padding: .6rem 1.2rem; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px; width: 40px; height: 40px;
  background: none; border: 0; cursor: pointer; padding: 8px; margin-left: auto;
}
.nav-toggle span { height: 2px; background: #fff; transition: transform .2s, opacity .2s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =====================================================================
   HERO — typography game on charcoal, red spine
   ===================================================================== */
.hero {
  position: relative; overflow: hidden;
  background: var(--charcoal); color: var(--paper);
  border-left: var(--spine) solid var(--signal-red);
  padding-block: clamp(4rem, 12vw, 9rem) clamp(3rem, 7vw, 6rem);
  /* faint construction grid */
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 64px 64px;
}
.hero-ghost {
  position: absolute; right: -2vw; bottom: -6vw; z-index: 0; pointer-events: none;
  font-family: var(--font-display); font-weight: 900; text-transform: uppercase;
  font-size: clamp(10rem, 34vw, 30rem); line-height: .8; letter-spacing: -.03em;
  color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.06);
  text-stroke: 1px rgba(255,255,255,.06);
}
.hero-inner { position: relative; z-index: 1; max-width: 62rem; }

.kicker {
  font-family: var(--font-mono); font-size: clamp(.7rem, .65rem + .3vw, .82rem);
  letter-spacing: .12em; text-transform: uppercase; margin: 0 0 1.75rem;
}
.kicker-pill {
  display: inline-block; background: var(--signal-red); color: #fff;
  padding: .5rem .9rem; letter-spacing: .1em;
}

.hero-title {
  font-family: var(--font-display); font-weight: 900; text-transform: uppercase;
  font-size: clamp(2.75rem, 9vw, 7.5rem); letter-spacing: -.02em; line-height: .92;
  margin: 0 0 1.75rem;
}
/* emphasised word — solid red fill, white text (contrast-safe on charcoal) */
.hero-title .mark {
  display: inline-block; background: var(--signal-red); color: #fff;
  padding: 0 .18em .06em; box-decoration-break: clone; -webkit-box-decoration-break: clone;
}

.hero-sub {
  font-size: clamp(1.05rem, 1rem + .4vw, 1.35rem); line-height: 1.55;
  color: var(--aggregate); max-width: 46rem; margin: 0 0 2.5rem;
}

.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 3.5rem; }

.hero-triad {
  display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.5rem);
  font-family: var(--font-display); font-weight: 800; text-transform: uppercase;
  font-size: clamp(1.1rem, 1rem + 1vw, 2rem); letter-spacing: .02em;
}
.hero-triad .sep { width: 42px; height: 3px; background: var(--signal-red); }

/* =====================================================================
   Positioning statement strip
   ===================================================================== */
.statement { background: var(--graphite); color: var(--paper); padding-block: clamp(2.5rem, 5vw, 4rem); }
.statement-text {
  font-family: var(--font-head); font-weight: 600; text-transform: uppercase;
  font-size: clamp(1.4rem, 1rem + 2.4vw, 2.8rem); line-height: 1.12; letter-spacing: .01em;
  max-width: 60rem; margin: 0;
}
/* red as a RULE under white text — never red text on dark (DI-STD-001) */
.statement-text strong { color: var(--paper); font-weight: 700; box-shadow: inset 0 -0.14em 0 var(--signal-red); }

/* =====================================================================
   Section scaffolding
   ===================================================================== */
.section { padding-block: var(--section-y); }
.what     { background: var(--paper); }
.process  { background: var(--aggregate); }
.sectors  { background: var(--paper); }
.why      { background: var(--charcoal); color: var(--paper); }
.contact  { background: var(--charcoal); color: var(--paper); }

.sec-head { max-width: 46rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.sec-num {
  display: block; font-family: var(--font-mono); font-weight: 700;
  color: var(--signal-red); font-size: clamp(.85rem, .8rem + .3vw, 1rem);
  letter-spacing: .1em; margin-bottom: .75rem;
}
.sec-title {
  font-family: var(--font-head); font-weight: 700; text-transform: uppercase;
  font-size: clamp(2rem, 1.4rem + 3vw, 4rem); letter-spacing: -.01em;
  padding-left: 1rem; border-left: var(--spine) solid var(--signal-red);
  line-height: .95;
}
.sec-lead { color: var(--concrete); font-size: 1.1rem; margin: 1.25rem 0 0; padding-left: calc(1rem + var(--spine)); }
.sec-head--light .sec-lead,
.sec-head--onDark .sec-lead { color: #b8b8bd; }

/* =====================================================================
   What We Do — cards
   ===================================================================== */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--aggregate); border: 1px solid var(--aggregate); }
.card { background: var(--paper); padding: clamp(1.75rem, 3vw, 2.75rem); }
.card-title {
  font-family: var(--font-head); font-weight: 700; text-transform: uppercase;
  font-size: clamp(1.25rem, 1rem + 1vw, 1.7rem); letter-spacing: .01em;
  padding-left: .85rem; border-left: 3px solid var(--signal-red); margin-bottom: 1rem;
}
.card p { color: var(--concrete); margin: 0; }

/* =====================================================================
   How We Work — numbered steps, oversized red numerals
   ===================================================================== */
.steps { display: grid; gap: clamp(1.5rem, 3vw, 2.5rem); }
.step { display: grid; grid-template-columns: auto 1fr; gap: clamp(1rem, 3vw, 2.5rem); align-items: start; border-top: 2px solid var(--charcoal); padding-top: 1.5rem; }
.step-num {
  font-family: var(--font-mono); font-weight: 700; color: var(--signal-red);
  font-size: clamp(2.5rem, 2rem + 4vw, 5.5rem); line-height: .8; letter-spacing: -.02em;
}
.step-title {
  font-family: var(--font-head); font-weight: 700; text-transform: uppercase;
  font-size: clamp(1.35rem, 1rem + 1.4vw, 2.1rem); margin-bottom: .5rem;
}
.step p { color: var(--concrete); margin: 0; max-width: 40rem; }

/* =====================================================================
   Sectors — chips
   ===================================================================== */
.chips { display: flex; flex-wrap: wrap; gap: .85rem; }
.chips li {
  font-family: var(--font-head); font-weight: 600; text-transform: uppercase;
  letter-spacing: .04em; font-size: clamp(1rem, .9rem + .5vw, 1.35rem);
  padding: .7rem 1.35rem; border: 2px solid var(--charcoal); background: var(--paper);
  transition: background-color .15s, color .15s, border-color .15s;
}
.chips li:hover { background: var(--signal-red); color: #fff; border-color: var(--signal-red); }

/* =====================================================================
   Why — stat strip (mono)
   ===================================================================== */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.1); }
.stat { background: var(--charcoal); padding: clamp(1.5rem, 3vw, 2.5rem); }
.stat-num {
  font-family: var(--font-mono); font-weight: 700; color: var(--signal-red);
  font-size: clamp(2.25rem, 1.5rem + 4vw, 4.5rem); line-height: 1; margin: 0;
}
.stat-num span { color: var(--paper); }
.stat-label {
  font-family: var(--font-head); text-transform: uppercase; letter-spacing: .06em;
  font-weight: 600; font-size: .85rem; color: #b8b8bd; margin-bottom: .75rem;
}

/* =====================================================================
   Contact
   ===================================================================== */
.contact { border-top: 2px solid var(--signal-red); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2.5rem, 5vw, 5rem); align-items: start; }
.contact-lead { color: var(--aggregate); font-size: 1.15rem; max-width: 30rem; margin-bottom: 2.5rem; }

.contact-details { display: grid; gap: 1.5rem; }
.contact-details li { display: grid; gap: .25rem; }
.cd-label { font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; color: var(--signal-red); }
.contact-details a { color: #fff; text-decoration: none; border-bottom: 1px solid rgba(255,255,255,.35); width: max-content; }
.contact-details a:hover { border-bottom-color: var(--signal-red); }
.contact-details address { font-style: normal; color: var(--aggregate); line-height: 1.5; }

/* Form */
.contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.field { display: grid; gap: .4rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--font-head); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; font-size: .82rem; color: var(--aggregate); }
.field input, .field select, .field textarea {
  font-family: var(--font-body); font-size: 1rem; color: #fff;
  background: var(--graphite); border: 1px solid rgba(255,255,255,.18);
  padding: .8rem .9rem; border-radius: 0; width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--signal-red); outline: none; }
.field textarea { resize: vertical; }
.form-note { font-family: var(--font-mono); font-size: .85rem; color: #b8b8bd; margin: .75rem 0 0; min-height: 1.2em; }
.form-note.ok { color: #7ec98f; }

/* =====================================================================
   Footer
   ===================================================================== */
.site-footer { background: var(--charcoal); color: var(--paper); border-top: 2px solid var(--signal-red); padding-block: clamp(2.5rem, 5vw, 4rem); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 1.5rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: clamp(1rem, 2.5vw, 2rem); }
.footer-nav a { font-family: var(--font-head); text-transform: uppercase; letter-spacing: .05em; font-weight: 600; font-size: .85rem; color: var(--aggregate); text-decoration: none; }
.footer-nav a:hover { color: var(--signal-red); }
.footer-meta { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; width: 100%; font-family: var(--font-mono); font-size: .8rem; color: var(--concrete); margin: 0; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.08); }
.footer-meta a { color: var(--aggregate); text-decoration: none; }
.footer-meta a:hover { color: var(--signal-red); }

/* =====================================================================
   WhatsApp FAB
   ===================================================================== */
.wa-fab {
  position: fixed; right: clamp(1rem, 3vw, 2rem); bottom: clamp(1rem, 3vw, 2rem); z-index: 90;
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center; color: #fff; background: var(--signal-red);
  box-shadow: 0 6px 20px rgba(0,0,0,.3); transition: background-color .18s, transform .18s;
}
.wa-fab:hover { background: var(--oxblood); transform: translateY(-2px); }

/* =====================================================================
   Scroll-reveal (progressive enhancement; JS adds .is-in)
   ===================================================================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
}

/* =====================================================================
   Responsive
   ===================================================================== */
@media (max-width: 1024px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; align-items: stretch;
    gap: 0; background: var(--charcoal); border-top: 1px solid rgba(255,255,255,.08);
    padding: .5rem var(--gutter) 1.25rem; transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .18s, transform .18s;
  }
  .nav-menu.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-menu li { padding: .35rem 0; }
  .nav-menu a { display: block; padding: .6rem 0; }
  .nav-cta a { display: inline-block; margin-top: .5rem; }

  .cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .contact-form { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .stats { grid-template-columns: 1fr; }
  .hero-triad { flex-wrap: wrap; }
}