/* ==========================================================================
   United Three for Contracting — design system
   B&W editorial / architecture-agency. One accent: United-3 electric blue.
   Signature: the numbers — SAR values & metrics set in oversized mono.
   ========================================================================== */

:root {
  --ink:      #101010;
  --paper:    #ffffff;
  --concrete: #6b6b6b;   /* secondary text */
  --line:     #e4e4e1;   /* hairlines */
  --wash:     #f5f5f2;   /* section tint */
  --blue:     #0040ff;   /* United-3 accent — used with restraint */

  --f-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --f-body:    "Inter", "Helvetica Neue", Arial, sans-serif;
  --f-mono:    "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;

  --gutter: clamp(1.25rem, 5vw, 6rem);
  --maxw: 1440px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--f-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ---------- type ---------- */
h1, h2, h3, h4 { font-family: var(--f-display); font-weight: 700; line-height: 1.02; letter-spacing: -0.02em; }

.display {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.6rem, 8vw, 7rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
}

.eyebrow {
  font-family: var(--f-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--concrete);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 2px;
  background: var(--blue);
  display: inline-block;
}

.mono { font-family: var(--f-mono); }

/* ---------- layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }
.section { padding-block: clamp(4.5rem, 10vw, 9rem); }
.section--wash { background: var(--wash); }
.section--ink { background: var(--ink); color: var(--paper); }

.section-head { display: flex; flex-direction: column; gap: 1.4rem; margin-bottom: clamp(2.5rem, 5vw, 4rem); max-width: 46ch; }
.section-head h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
.section-head p { color: var(--concrete); font-size: 1.05rem; }
.section--ink .section-head p { color: #b8b8b8; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 1.05rem 1.7rem; border: 1.5px solid var(--ink); background: var(--ink); color: var(--paper);
  transition: background .25s, color .25s, border-color .25s, transform .25s;
  cursor: pointer;
}
.btn:hover { background: var(--blue); border-color: var(--blue); }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.section--ink .btn { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.section--ink .btn:hover { background: var(--blue); color: var(--paper); border-color: var(--blue); }
.btn .arw { transition: transform .25s; }
.btn:hover .arw { transform: translateX(4px); }
[dir=rtl] .btn:hover .arw { transform: translateX(-4px); }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.9); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 78px; }
.brand { display: flex; align-items: center; gap: 0.7rem; }
.brand img { height: 34px; width: auto; }
.brand .btext { display: flex; flex-direction: column; line-height: 1; }
.brand .bname { font-family: var(--f-display); font-weight: 800; font-size: 1.15rem; letter-spacing: 0.02em; }
.brand .bsub { font-family: var(--f-mono); font-size: 0.55rem; letter-spacing: 0.28em; color: var(--concrete); margin-top: 3px; }

.nav { display: flex; align-items: center; gap: clamp(1.2rem, 2.4vw, 2.6rem); }
.nav a { font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink); position: relative; padding-block: 0.3rem; }
.nav a::after { content: ""; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--blue); transition: width .25s; }
.nav a:hover::after, .nav a[aria-current="page"]::after { width: 100%; }
.nav a[aria-current="page"] { color: var(--blue); }

.lang { font-family: var(--f-mono); font-size: 0.78rem; letter-spacing: 0.06em; border: 1px solid var(--line); padding: 0.45rem 0.8rem; transition: border-color .25s, color .25s; }
.lang:hover { border-color: var(--ink); }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 5px; padding: 6px; }
.nav-toggle span { width: 26px; height: 2px; background: var(--ink); transition: .25s; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero { border-bottom: 1px solid var(--line); }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; min-height: calc(100vh - 78px); padding-block: clamp(3rem, 6vw, 5rem); }
.hero-copy .eyebrow { margin-bottom: 1.8rem; }
.hero-copy h1 { font-size: clamp(2.7rem, 6.4vw, 6rem); font-weight: 800; letter-spacing: -0.035em; }
.hero-copy h1 em { font-style: normal; color: var(--blue); }
.hero-copy p { color: var(--concrete); font-size: clamp(1.05rem, 1.6vw, 1.3rem); max-width: 42ch; margin: 1.8rem 0 2.4rem; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-media { position: relative; }
.hero-media img { width: 100%; height: clamp(360px, 62vh, 660px); object-fit: cover; filter: grayscale(1) contrast(1.05); }
.hero-media .tag { position: absolute; bottom: 0; left: 0; background: var(--ink); color: var(--paper); font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; padding: 0.7rem 1rem; }
[dir=rtl] .hero-media .tag { left: auto; right: 0; }

/* metrics ledger — the signature */
.ledger { border-top: 1px solid var(--line); background: var(--paper); }
.ledger .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.metric { padding: clamp(1.6rem,3vw,2.6rem) 0; border-inline-start: 1px solid var(--line); padding-inline-start: clamp(1rem,2vw,2rem); }
.metric:first-child { border-inline-start: 0; padding-inline-start: 0; }
.metric .num { font-family: var(--f-mono); font-weight: 500; font-size: clamp(1.9rem, 4vw, 3.2rem); letter-spacing: -0.03em; line-height: 1; }
.metric .num b { color: var(--blue); font-weight: 500; }
.metric .lab { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--concrete); margin-top: 0.8rem; }

/* ==========================================================================
   Intro thesis
   ========================================================================== */
.thesis p { font-family: var(--f-display); font-weight: 600; font-size: clamp(1.6rem, 3.6vw, 3rem); line-height: 1.18; letter-spacing: -0.02em; max-width: 22ch; }
.thesis p span { color: var(--concrete); }

/* ==========================================================================
   Services grid
   ========================================================================== */
.svc-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-inline-start: 1px solid var(--line); }
.svc { border-inline-end: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: clamp(1.8rem, 3vw, 3rem); min-height: 260px; display: flex; flex-direction: column; gap: 1rem; transition: background .25s; }
.svc:hover { background: var(--wash); }
.svc .idx { font-family: var(--f-mono); font-size: 0.75rem; color: var(--blue); letter-spacing: 0.1em; }
.svc h3 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); margin-top: auto; }
.svc p { color: var(--concrete); font-size: 0.98rem; }

/* ==========================================================================
   Projects
   ========================================================================== */
.feat { display: grid; gap: clamp(1.2rem, 2vw, 1.6rem); grid-template-columns: repeat(12, 1fr); }
.pcard { position: relative; overflow: hidden; background: var(--ink); display: block; }
.pcard img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1) contrast(1.04); transition: filter .5s, transform .7s; }
.pcard:hover img { filter: grayscale(0); transform: scale(1.04); }
.pcard .meta { position: absolute; inset-inline: 0; bottom: 0; padding: clamp(1.1rem,2vw,1.7rem); background: linear-gradient(to top, rgba(0,0,0,.82), rgba(0,0,0,0)); color: #fff; }
.pcard .val { font-family: var(--f-mono); font-weight: 500; font-size: clamp(1.5rem, 2.6vw, 2.3rem); letter-spacing: -0.02em; line-height: 1; }
.pcard .val span { color: #9db4ff; }
.pcard .pname { font-family: var(--f-body); font-weight: 600; margin-top: 0.5rem; font-size: 1.02rem; }
.pcard .pscope { font-family: var(--f-mono); font-size: 0.68rem; letter-spacing: 0.12em; text-transform: uppercase; color: #c9c9c9; margin-top: 0.25rem; }
.feat .pcard:nth-child(1) { grid-column: span 7; aspect-ratio: 16/10; }
.feat .pcard:nth-child(2) { grid-column: span 5; aspect-ratio: 4/5; }
.feat .pcard:nth-child(3) { grid-column: span 5; aspect-ratio: 4/5; }
.feat .pcard:nth-child(4) { grid-column: span 7; aspect-ratio: 16/10; }

/* project index (Projects page) — spec-sheet ledger */
.pindex { border-top: 1px solid var(--line); }
.prow { display: grid; grid-template-columns: 0.5fr 2.4fr 1.3fr 1fr; gap: 1rem; align-items: center; padding: clamp(1.3rem,2.4vw,2rem) 0; border-bottom: 1px solid var(--line); transition: background .25s, padding-inline .25s; }
.prow:hover { background: var(--wash); }
.prow .pno { font-family: var(--f-mono); color: var(--concrete); font-size: 0.85rem; }
.prow .pttl { font-family: var(--f-display); font-weight: 700; font-size: clamp(1.15rem, 2vw, 1.7rem); }
.prow .pcli { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--concrete); margin-top: 0.3rem; }
.prow .psco { font-family: var(--f-mono); font-size: 0.78rem; color: var(--concrete); }
.prow .pval { font-family: var(--f-mono); font-weight: 500; font-size: clamp(1.1rem, 1.8vw, 1.6rem); text-align: end; }
.prow .pval span { color: var(--blue); }
.pgallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px,1fr)); gap: clamp(1rem,1.6vw,1.4rem); }
.gcard { position: relative; overflow: hidden; aspect-ratio: 4/3; background: var(--ink); }
.gcard img { width:100%; height:100%; object-fit: cover; filter: grayscale(1) contrast(1.04); transition: filter .5s, transform .7s; }
.gcard:hover img { filter: grayscale(0); transform: scale(1.04); }
.gcard .cap { position:absolute; inset-inline:0; bottom:0; padding: 1rem; background: linear-gradient(to top, rgba(0,0,0,.8), transparent); color:#fff; font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; }

/* ==========================================================================
   About / leadership / vision
   ========================================================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,5rem); align-items: center; }
.split img { filter: grayscale(1) contrast(1.03); width: 100%; height: 100%; object-fit: cover; }
.prose p { color: var(--concrete); font-size: 1.08rem; margin-bottom: 1.2rem; max-width: 60ch; }
.prose p strong { color: var(--ink); font-weight: 600; }

.pillars { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.pillar { background: var(--paper); padding: clamp(1.5rem,2.6vw,2.4rem); }
.pillar .idx { font-family: var(--f-mono); color: var(--blue); font-size: 0.8rem; }
.pillar h4 { font-size: 1.2rem; margin: 0.7rem 0 0.6rem; }
.pillar p { color: var(--concrete); font-size: 0.95rem; }

.team { display: grid; grid-template-columns: repeat(4,1fr); gap: clamp(1.2rem,2vw,1.8rem); }
.member img { aspect-ratio: 1/1; object-fit: cover; filter: grayscale(1) contrast(1.03); width: 100%; }
.member .mn { font-family: var(--f-display); font-weight: 700; font-size: 1.15rem; margin-top: 1rem; }
.member .mr { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--blue); margin-top: 0.3rem; }
.member .mb { color: var(--concrete); font-size: 0.9rem; margin-top: 0.6rem; }

.sectors { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.sectors span { font-family: var(--f-mono); font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; border: 1px solid var(--line); padding: 0.7rem 1.1rem; }
.section--ink .sectors span { border-color: #333; }

.clients-strip { display: flex; flex-wrap: wrap; gap: clamp(1.5rem,4vw,3.5rem); align-items: center; }
.clients-strip span { font-family: var(--f-display); font-weight: 700; font-size: clamp(1.1rem,2vw,1.7rem); color: var(--concrete); transition: color .25s; }
.clients-strip span:hover { color: var(--ink); }

/* ==========================================================================
   CTA band + Contact
   ========================================================================== */
.cta-band { text-align: start; }
.cta-band h2 { font-size: clamp(2.2rem, 5.5vw, 4.6rem); max-width: 18ch; }
.cta-band .row { display: flex; justify-content: space-between; align-items: flex-end; gap: 2rem; flex-wrap: wrap; margin-top: 2.5rem; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,5rem); }
.cinfo dl { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1.4rem; margin-top: 1rem; }
.cinfo dt { font-family: var(--f-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--concrete); padding-top: 0.35rem; }
.cinfo dd { font-size: 1.05rem; }
.cinfo dd a:hover { color: var(--blue); }
.form-field { margin-bottom: 1.2rem; }
.form-field label { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--concrete); display: block; margin-bottom: 0.5rem; }
.form-field input, .form-field textarea { width: 100%; border: 1px solid var(--line); background: var(--paper); padding: 0.9rem 1rem; font-family: var(--f-body); font-size: 1rem; color: var(--ink); transition: border-color .25s; }
.form-field input:focus, .form-field textarea:focus { outline: none; border-color: var(--blue); }
.form-field textarea { resize: vertical; min-height: 130px; }
.hp { position: absolute; left: -9999px; }
.map-embed { border: 1px solid var(--line); width: 100%; height: 340px; filter: grayscale(1); margin-top: 2rem; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--ink); color: #cfcfcf; padding-block: clamp(3rem,6vw,5rem); }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: clamp(2rem,4vw,4rem); }
.site-footer img.flogo { height: 40px; margin-bottom: 1.4rem; }
.site-footer h5 { font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: #7f7f7f; margin-bottom: 1.1rem; }
.site-footer a { display: block; color: #cfcfcf; padding: 0.3rem 0; font-size: 0.95rem; }
.site-footer a:hover { color: #fff; }
.site-footer .fbar { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; border-top: 1px solid #262626; margin-top: clamp(2.5rem,4vw,3.5rem); padding-top: 1.6rem; font-family: var(--f-mono); font-size: 0.72rem; letter-spacing: 0.06em; color: #7f7f7f; }

/* ==========================================================================
   Reveal on scroll
   ========================================================================== */
/* Content is visible by default; only the .js class (added by main.js) arms the
   fade-up, so nothing ever depends on JS/observer firing to be seen. */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ==========================================================================
   RTL
   ========================================================================== */
[dir=rtl] body { font-family: "IBM Plex Sans Arabic", var(--f-body); }
[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] h3,[dir=rtl] h4,[dir=rtl] .display,[dir=rtl] .brand .bname { font-family: "IBM Plex Sans Arabic", var(--f-display); letter-spacing: 0; }
[dir=rtl] .eyebrow::before { }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; min-height: auto; }
  .hero-media { order: -1; }
  .hero-media img { height: 46vh; }
  .ledger .wrap { grid-template-columns: repeat(2,1fr); }
  .metric:nth-child(3) { border-inline-start: 0; padding-inline-start: 0; }
  .split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .site-footer .cols { grid-template-columns: 1fr 1fr; }
  .team { grid-template-columns: repeat(2,1fr); }
  .feat .pcard { grid-column: 1 / -1 !important; aspect-ratio: 16/10 !important; }
  .prow { grid-template-columns: 0.4fr 2fr 1fr; }
  .prow .psco { display: none; }
}
@media (max-width: 640px) {
  .nav { position: fixed; inset: 78px 0 auto 0; background: var(--paper); border-bottom: 1px solid var(--line); flex-direction: column; align-items: flex-start; gap: 0; padding: 1rem var(--gutter) 1.5rem; transform: translateY(-120%); transition: transform .3s; }
  .nav.open { transform: none; }
  .nav a { padding: 0.7rem 0; width: 100%; }
  .nav-toggle { display: flex; }
  .svc-grid { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .team { grid-template-columns: 1fr 1fr; }
  .thesis p { font-size: 1.5rem; }
  .cta-band .row { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
  .reveal { opacity: 1 !important; transform: none !important; transition: none; }
  .pcard:hover img, .gcard:hover img { transform: none; }
}

:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }