/* Business Yard Tower — landing page
   Extends ../06_System/heyazah.css. No colour, font or radius is invented here;
   everything resolves to a system token. */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: clip; }
body { margin: 0; overflow-x: clip; }
img { max-width: 100%; display: block; }
::selection { background: var(--color-brand); color: var(--color-on-brand); }

.wrap { max-width: 1240px; margin-inline: auto; padding-inline: var(--space-6); }
.wrap--narrow { max-width: 780px; }

section { padding-block: var(--space-32); }
@media (max-width: 760px) { section { padding-block: var(--space-16); } }

.eyebrow {
  font-family: var(--font-text);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-none);
  text-transform: uppercase;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-4);
}
.display {
  font-family: var(--font-display-ar);
  font-weight: var(--weight-extralight);
  line-height: 1.05;
  letter-spacing: var(--tracking-none);
  margin: 0;
  font-size: clamp(2.4rem, 6vw, 5rem);
}
.display--sm { font-size: clamp(1.9rem, 4vw, 3.2rem); }
.lede {
  font-size: var(--text-lg);
  font-weight: var(--weight-light);
  color: var(--color-ink-muted);
  max-width: 54ch;
  margin: var(--space-6) 0 0;
}

/* ---------- header ---------------------------------------------------- */

.site-header {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--color-bg) 86%, transparent);
  backdrop-filter: blur(14px) saturate(1.1);
  border-block-end: 1px solid var(--color-border);
}
.site-header .bar {
  display: flex; align-items: center; gap: var(--space-6);
  min-height: 74px;
}
.brandline { display: flex; align-items: center; gap: var(--space-4); margin-inline-end: auto; }
.brandline .hz-logo { height: 34px; color: var(--color-ink); }
.brandline .divider { width: 1px; height: 26px; background: var(--color-border); }
.brandline .project {
  font-family: var(--font-text);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-none);
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.site-nav { display: flex; gap: var(--space-6); }
.site-nav a {
  font-size: var(--text-sm); text-decoration: none; color: var(--color-ink);
  /* Teal on sand is 5.65:1 at full strength — there is almost no headroom to
     spend on de-emphasis. At .62 these links read 2.77:1, well under AA. .9 is
     the most fade the pair can carry and still clear it (4.71:1); the rest of
     the hierarchy is already doing its work through size and the hover rule. */
  opacity: .9; padding-block: var(--space-2); position: relative;
}
.site-nav a::after {
  content: ""; position: absolute; inset-inline: 0; bottom: 0; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: inline-start;
  transition: transform .3s ease;
}
.site-nav a:hover { opacity: 1; }
.site-nav a:hover::after { transform: scaleX(1); }
@media (max-width: 900px) {
  .site-header .bar { flex-wrap: wrap; padding-block: var(--space-3); gap: var(--space-3); }
  .brandline { margin-inline-end: auto; }
  .site-nav {
    order: 3; width: 100%; overflow-x: auto; gap: var(--space-4);
    padding-block-start: var(--space-2); scrollbar-width: none;
  }
  .site-nav::-webkit-scrollbar { display: none; }
  /* .8 here for the same reason .62 failed above — teal on sand has no room */
  .site-nav a { white-space: nowrap; opacity: .9; }
}

.ghost {
  font: inherit; font-size: var(--text-sm);
  background: none; color: var(--color-ink); cursor: pointer;
  border: 1px solid var(--color-border); border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4); line-height: 1;
  transition: background .2s, color .2s, border-color .2s;
}
.ghost:hover { background: var(--color-ink); color: var(--color-bg); border-color: var(--color-ink); }

/* ---------- hero ------------------------------------------------------ */

.hero {
  position: relative; isolation: isolate;
  min-height: clamp(560px, 82vh, 860px);
  display: flex; align-items: flex-end;
  padding-block: var(--space-24) var(--space-16);
  background: var(--hz-dark);
  color: var(--hz-sand);
  overflow: hidden;
}
.hero__media { position: absolute; inset: 0; z-index: -2; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 42%; }
.hero__scrim {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to top, var(--hz-dark) 2%, rgb(8 43 42 / .72) 38%, rgb(8 43 42 / .30) 100%);
}
/* Pattern P1 — the radial rays from p.18 of the manual, as a faint overlay. */
.hero::before {
  content: ""; position: absolute; inset: -40% 0 auto 0; height: 140%; z-index: -1;
  background: repeating-conic-gradient(from 200deg at 50% 120%,
    rgb(209 204 189 / .07) 0deg .18deg, transparent .18deg 1.5deg);
  pointer-events: none;
}
/* The hero is a flex container, so its .wrap child shrank to its own content
   (610px inside 1425) and margin-inline:auto then centred that box. The copy
   read as centred even though every text-align was already `start`. Giving the
   child the full row puts the block back on the reading edge. */
.hero > .wrap { flex: 1 1 100%; width: 100%; }
.hero .eyebrow { color: color-mix(in srgb, var(--hz-sand) 70%, transparent); }
.hero .display { color: var(--hz-sand); max-width: 14ch; }
.hero__sub {
  font-weight: var(--weight-light);
  font-size: clamp(1rem, 1.6vw, var(--text-lg));
  color: color-mix(in srgb, var(--hz-sand) 78%, transparent);
  max-width: 46ch; margin: var(--space-6) 0 0;
}
.hero__foot {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: var(--space-6); margin-top: var(--space-12);
}

.cta {
  display: inline-flex; align-items: center; gap: var(--space-3);
  font-weight: var(--weight-medium); text-decoration: none;
  background: var(--hz-sand); color: var(--hz-dark);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  transition: transform .25s ease, background .25s ease;
}
.cta:hover { transform: translateY(-2px); background: var(--hz-white); }
.cta svg { width: 15px; height: 15px; }
.cta--quiet { background: none; color: var(--hz-sand); border: 1px solid color-mix(in srgb, var(--hz-sand) 40%, transparent); }
.cta--quiet:hover { background: color-mix(in srgb, var(--hz-sand) 12%, transparent); }

/* ---------- stats ----------------------------------------------------- */

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-8); }
@media (max-width: 900px) { .stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-8) var(--space-6); } }
.stat { border-block-start: 1px solid var(--color-border); padding-block-start: var(--space-4); }
.stat b {
  display: block;
  font-family: var(--font-text);
  font-weight: var(--weight-extralight);
  font-variant-numeric: lining-nums tabular-nums;
  font-size: clamp(2rem, 4.4vw, 3.4rem);
  line-height: 1; color: var(--color-ink);
}
.stat span { display: block; font-size: var(--text-sm); color: var(--color-ink-muted); margin-top: var(--space-3); }

/* ---------- overview: arch + editorial -------------------------------- */

.split {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: clamp(var(--space-8), 6vw, var(--space-24)); align-items: center;
}
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.arch-frame {
  border-radius: var(--radius-arch);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--color-surface-muted);
  position: relative;
}
.arch-frame img { width: 100%; height: 100%; object-fit: cover; }
.arch-frame::after {
  content: ""; position: absolute; inset: 0;
  border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--hz-sand) 45%, transparent);
  pointer-events: none;
}

.marks { list-style: none; margin: var(--space-12) 0 0; padding: 0; }
.marks li {
  display: grid; grid-template-columns: auto 1fr; gap: var(--space-6);
  padding-block: var(--space-4);
  border-block-start: 1px solid var(--color-border);
  align-items: baseline;
}
.marks dt, .marks .k {
  font-family: var(--font-text); font-size: var(--text-xs);
  letter-spacing: var(--tracking-none); text-transform: uppercase;
  color: var(--color-ink-muted); min-width: 8ch;
}
.marks .v { font-weight: var(--weight-light); }

/* ---------- floor stack ----------------------------------------------- */

.stack-layout {
  display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
  gap: clamp(var(--space-6), 4vw, var(--space-16)); align-items: start;
  margin-top: var(--space-12);
}
@media (max-width: 900px) {
  /* Plan first, then the level list — otherwise the viewer sits below 19 rows. */
  .stack-layout { grid-template-columns: 1fr; }
  .viewer { position: static; order: -1; }
}

.stack { display: flex; flex-direction: column; gap: 2px; }
.lvl {
  display: grid; grid-template-columns: 4.5ch 1fr auto;
  align-items: center; gap: var(--space-4);
  font: inherit; text-align: start; cursor: pointer;
  background: var(--color-surface); color: var(--color-ink);
  border: 0; border-inline-start: 3px solid transparent;
  padding: var(--space-3) var(--space-4);
  transition: background .18s ease, border-color .18s ease, padding .18s ease;
}
.lvl:hover { background: var(--color-surface-muted); }
.lvl[aria-selected="true"] {
  background: var(--color-ink); color: var(--color-bg);
  border-inline-start-color: var(--hz-gold-flat);
}
.lvl .tag {
  font-family: var(--font-text); font-variant-numeric: lining-nums tabular-nums;
  font-size: var(--text-sm); font-weight: var(--weight-medium); opacity: .85;
}
.lvl .nm { font-size: var(--text-sm); font-weight: var(--weight-light); }
.lvl .sz {
  font-family: var(--font-text); font-variant-numeric: lining-nums tabular-nums;
  /* .6 put the floor areas at 2.99:1 on the neutral row and 3.02:1 on the
     selected one. .8 is the floor that clears AA on both (4.71:1 / 4.6:1). */
  font-size: var(--text-xs); opacity: .9;
}
.lvl--roof { background: var(--color-surface-muted); }
.stack__rule {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-xs); letter-spacing: var(--tracking-none);
  text-transform: uppercase; color: var(--color-ink-muted);
  padding-block: var(--space-3);
}
.stack__rule::after { content: ""; flex: 1; height: 1px; background: var(--color-border); }

.viewer { position: sticky; top: 100px; }
.viewer__plate {
  border: 1px solid var(--color-border);
  background: var(--hz-white);
  aspect-ratio: 16 / 10; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.viewer__plate img { width: 100%; height: 100%; object-fit: contain; }
.viewer__meta {
  display: flex; flex-wrap: wrap; gap: var(--space-6);
  margin-top: var(--space-4);
}
.viewer__meta div { min-width: 9ch; }
.viewer__meta dt {
  font-size: var(--text-xs); letter-spacing: var(--tracking-none);
  text-transform: uppercase; color: var(--color-ink-muted);
}
.viewer__meta dd {
  margin: var(--space-1) 0 0;
  font-family: var(--font-text); font-variant-numeric: lining-nums tabular-nums;
  font-size: var(--text-xl); font-weight: var(--weight-extralight);
}
.viewer__zoom { margin-top: var(--space-4); }

/* ---------- tour ------------------------------------------------------ */

.band-dark { background: var(--hz-dark); color: var(--hz-sand); }
/* 62% sand on the dark band lands at 4.51:1 — AA by a rounding error, and it
   fails outright the moment the band colour is touched. 72% gives real margin. */
.band-dark .eyebrow { color: color-mix(in srgb, var(--hz-sand) 72%, transparent); }
.band-dark .display { color: var(--hz-sand); }
.band-dark .lede { color: color-mix(in srgb, var(--hz-sand) 74%, transparent); }

/* --radius-arch is a true semicircle — right on a portrait or square box, but on a
   16:9 frame it clamps to half the width and swallows the content. Wide surfaces get
   a proportional arched top instead. */
.tour-arch {
  margin-top: var(--space-12);
  border-radius: clamp(56px, 9vw, 150px) clamp(56px, 9vw, 150px) 0 0;
  overflow: hidden; position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid color-mix(in srgb, var(--hz-sand) 26%, transparent);
  background: #0a2c2a;
}
.tour-arch iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
@media (max-width: 700px) { .tour-arch { aspect-ratio: 3 / 4; } }

/* Click-to-load poster. Keeps the page light, and means a blocked or offline
   embed shows the building rather than a framework error string. */
.tour-arch .poster { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tour-arch .play {
  position: absolute; inset: 0; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-4); cursor: pointer;
  background: linear-gradient(to top, rgb(8 43 42 / .78), rgb(8 43 42 / .30));
  border: 0; color: var(--hz-sand); font: inherit;
  transition: background .3s ease;
}
.tour-arch .play:hover { background: linear-gradient(to top, rgb(8 43 42 / .66), rgb(8 43 42 / .18)); }
.tour-arch .play .disc {
  width: 74px; height: 74px; border-radius: var(--radius-full);
  border: 1px solid color-mix(in srgb, var(--hz-sand) 55%, transparent);
  display: grid; place-items: center; font-size: var(--text-lg);
  transition: transform .3s ease, background .3s ease;
}
.tour-arch .play:hover .disc { transform: scale(1.06); background: color-mix(in srgb, var(--hz-sand) 14%, transparent); }
.tour-arch .play .label { font-size: var(--text-sm); letter-spacing: var(--tracking-none); text-transform: uppercase; }

/* ---------- areas table ----------------------------------------------- */

.tablewrap { overflow-x: auto; margin-top: var(--space-12); }
table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); min-width: 560px; }
caption { text-align: start; color: var(--color-ink-muted); font-size: var(--text-sm); padding-block-end: var(--space-4); }
th, td { padding: var(--space-3) var(--space-4); text-align: start; border-block-end: 1px solid var(--color-border); }
thead th {
  font-size: var(--text-xs); letter-spacing: var(--tracking-none); text-transform: uppercase;
  font-weight: var(--weight-medium); color: var(--color-ink-muted);
  border-block-end-color: var(--color-ink);
}
.num { font-variant-numeric: lining-nums tabular-nums; }
tbody .grp td {
  font-size: var(--text-xs); letter-spacing: var(--tracking-none); text-transform: uppercase;
  color: var(--color-ink-muted); padding-block-start: var(--space-8);
  border-block-end-color: var(--color-ink);
}
tfoot td { font-weight: var(--weight-medium); border-block-end: 0; border-block-start: 1px solid var(--color-ink); }

/* ---------- location -------------------------------------------------- */

.loc { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-12); margin-top: var(--space-12); align-items: start; }
@media (max-width: 860px) { .loc { grid-template-columns: 1fr; } }
.loc .mapbox {
  position: relative; aspect-ratio: 4 / 3;
  border: 1px solid var(--color-border); background: var(--color-surface);
  display: grid; place-items: center; overflow: hidden;
}
.loc .mapbox a { position: absolute; inset: 0; display: block; }
.loc .mapbox img { width: 100%; height: 100%; object-fit: cover; display: block; }
.loc .mapbox .mapcredit {
  position: absolute; inset-block-end: 6px; inset-inline-end: 8px; z-index: 2;
  font-size: 10px; padding: 2px 6px; border-radius: 3px;
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
  color: var(--color-ink-muted);
}
.loc .mapbox .fallback {
  font-size: var(--text-sm); color: var(--color-ink-muted); text-align: center;
  padding: var(--space-6); max-width: 34ch;
}
.loc a { color: var(--color-ink); }

/* ---------- footer ---------------------------------------------------- */

.site-footer { background: var(--hz-dark); color: color-mix(in srgb, var(--hz-sand) 70%, transparent); padding-block: var(--space-16); }
.site-footer .hz-logo { height: 42px; color: var(--hz-sand); }
.site-footer a { color: var(--hz-sand); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.foot {
  display: flex; flex-wrap: wrap; gap: var(--space-8);
  justify-content: space-between; align-items: flex-end;
}
.foot .contact { display: flex; flex-direction: column; gap: var(--space-2); font-size: var(--text-sm); }

/* ---------- lightbox -------------------------------------------------- */

.lb {
  position: fixed; inset: 0; z-index: 100; display: none;
  align-items: center; justify-content: center; padding: var(--space-6);
  background: rgb(8 43 42 / .95);
}
.lb[open], .lb.on { display: flex; }
.lb img { max-width: 100%; max-height: 92vh; object-fit: contain; }
.lb button {
  position: absolute; top: var(--space-4); inset-inline-end: var(--space-6);
  background: none; border: 0; color: var(--hz-sand);
  font-size: 2rem; line-height: 1; cursor: pointer;
}

/* ---------- motion ---------------------------------------------------- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
  .cta:hover { transform: none; }
}


/* Latin-only runs keep their tracking; everything else is Arabic and must not. */
.site-footer .contact a, .loc .num, .stat b, .viewer__meta dd { letter-spacing: var(--tracking-caps); }

/* ---------- credit -----------------------------------------------------
   Heyazah's footer is the client's and stays untouched above this. The line
   sits under a hairline, at the size of small print, because a producer's
   credit that shouts is a second logo — and this page belongs to them.     */
.site-footer .byline {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--space-4); flex-wrap: wrap;
  margin-block-start: var(--space-8); padding-block-start: var(--space-4);
  border-block-start: 1px solid color-mix(in srgb, var(--hz-sand) 20%, transparent);
  font-size: 12px;
}
.site-footer .byline p { margin: 0; }
.site-footer .byline a { text-decoration: underline; text-underline-offset: 3px; }