/* ============================================================
   Mohamed Roshdy — roshdy.me
   Direction: "Monumental infrastructure" — dark, teal-tinted,
   NileStack palette in OKLCH. Bilingual AR/EN, RTL-safe.
   ============================================================ */

:root {
  /* ---- canvas & neutrals (tinted toward teal hue ~185) ---- */
  --bg:        oklch(0.16 0.014 188);
  --bg-2:      oklch(0.19 0.016 188);
  --surface:   oklch(0.22 0.018 188);
  --line:      oklch(0.32 0.020 188);
  --line-soft: oklch(0.27 0.018 188);

  --ink:       oklch(0.96 0.008 188);   /* primary text */
  --ink-mut:   oklch(0.78 0.014 188);   /* secondary    */
  --ink-faint: oklch(0.60 0.016 188);   /* tertiary     */

  /* ---- brand accents (NileStack) ---- */
  --teal:      oklch(0.74 0.105 184);
  --emerald:   oklch(0.78 0.135 162);
  --indigo:    oklch(0.64 0.165 277);   /* rare spark   */

  /* ---- type ---- */
  --display: "Bricolage Grotesque", "Reem Kufi", system-ui, sans-serif;
  --body:    "Hanken Grotesk", "Tajawal", system-ui, sans-serif;

  /* ---- space (4pt scale, fluid where it matters) ---- */
  --s-xs: 0.5rem;
  --s-sm: 0.75rem;
  --s-md: 1rem;
  --s-lg: 1.5rem;
  --s-xl: 2rem;
  --s-2xl: 3rem;
  --s-3xl: clamp(4rem, 9vw, 8rem);
  --s-4xl: clamp(6rem, 14vw, 12rem);
  --s-sec: clamp(3rem, 6.5vw, 5rem);  /* section block padding */

  --gutter: clamp(1.25rem, 5vw, 6rem);
  --maxw: 78rem;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);   /* ease-out-quint-ish */
  --dur: 0.7s;
}

/* Arabic typography swap */
:root:lang(ar),
html[lang="ar"] {
  --display: "Reem Kufi", "Bricolage Grotesque", system-ui, sans-serif;
  --body:    "Tajawal", "Hanken Grotesk", system-ui, sans-serif;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
  min-height: 100svh;
}

::selection { background: var(--emerald); color: var(--bg); }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; }
:focus-visible {
  outline: 2px solid var(--emerald);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip {
  position: fixed; inset-block-start: -100%; inset-inline-start: var(--s-md);
  z-index: 100; background: var(--ink); color: var(--bg);
  padding: var(--s-sm) var(--s-md); border-radius: 6px; font-weight: 600;
}
.skip:focus { inset-block-start: var(--s-md); }

/* ============================================================
   ambient layers
   ============================================================ */
#field {
  position: fixed; inset: 0; z-index: -2;
  width: 100%; height: 100%;
  display: block;
}
.grain {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  opacity: 0.05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
/* vignette so type stays legible over the field */
body::after {
  content: ""; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, transparent 40%, var(--bg) 100%);
}

/* custom cursor: an accent ring that TRAILS the native cursor.
   The native arrow stays visible, so the pointer is never lost. No blend-mode. */
.cur-ring {
  position: fixed; inset-block-start: 0; inset-inline-start: 0;
  pointer-events: none; z-index: 9999;
  inline-size: 36px; block-size: 36px; border-radius: 50%;
  border: 2px solid var(--teal);
  translate: -50% -50%;
  opacity: 0;
  transition: inline-size 0.25s var(--ease), block-size 0.25s var(--ease),
              border-color 0.25s var(--ease), background 0.25s var(--ease),
              opacity 0.3s var(--ease);
}
body.cursor-on .cur-ring { opacity: 0.85; }
.cur-ring.is-hot {
  inline-size: 58px; block-size: 58px; border-color: var(--emerald);
  background: color-mix(in oklch, var(--emerald) 14%, transparent);
}
.cur-ring.is-press { inline-size: 26px; block-size: 26px; }
@media (hover: none), (pointer: coarse) { .cur-ring { display: none; } }

/* ============================================================
   nav
   ============================================================ */
.nav {
  position: fixed; inset-block-start: 0; inset-inline: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s-lg);
  padding: clamp(0.85rem, 1.6vw, 1.4rem) var(--gutter);
  transition: background var(--dur) var(--ease), backdrop-filter var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
  border-block-end: 1px solid transparent;
}
.nav.is-stuck {
  background: color-mix(in oklch, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-block-end-color: var(--line-soft);
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; }
.brand__mark rect { fill: var(--teal); transition: transform 0.4s var(--ease); }
.brand:hover .brand__mark rect:nth-child(1) { transform: translateX(-1.5px); }
.brand:hover .brand__mark rect:nth-child(3) { transform: translateX(1.5px); }
.brand__word {
  font-family: var(--display); font-weight: 800; letter-spacing: 0.14em;
  font-size: 0.95rem;
}
.nav__links { display: flex; gap: clamp(1rem, 2.5vw, 2.2rem); }
.nav__links a {
  font-size: 0.92rem; font-weight: 500; color: var(--ink-mut);
  position: relative; padding-block: 4px;
  transition: color 0.3s var(--ease);
}
.nav__links a::after {
  content: ""; position: absolute; inset-block-end: 0; inset-inline-start: 0;
  width: 100%; height: 1.5px; background: var(--emerald);
  transform: scaleX(0); transform-origin: inline-start;
  transition: transform 0.4s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); }
@media (max-width: 620px) { .nav__links { display: none; } }

.lang {
  display: inline-flex; align-items: center; gap: 0.45rem;
  font-family: var(--display); font-weight: 700; font-size: 0.85rem;
  letter-spacing: 0.06em; color: var(--ink-mut);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 0.4rem 0.85rem;
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease), background 0.3s var(--ease);
}
.lang:hover { color: var(--ink); border-color: var(--emerald); background: color-mix(in oklch, var(--emerald) 8%, transparent); }
.lang__cur { color: var(--ink); }
.lang__sep { color: var(--ink-faint); }
.lang__alt { color: var(--ink-faint); }

/* ============================================================
   shared section chrome
   ============================================================ */
main { display: block; }
section { padding-inline: var(--gutter); }

.sec-head {
  display: flex; align-items: center; gap: var(--s-md);
  padding-block-end: var(--s-xl);
  border-block-end: 1px solid var(--line-soft);
  margin-block-end: var(--s-2xl);
}
.sec-head::before {
  content: ""; flex: none; inline-size: 26px; block-size: 2px;
  background: var(--teal); border-radius: 2px;
}
.sec-head__label {
  font-size: 0.8rem; letter-spacing: 0.28em; text-transform: uppercase;
  color: var(--ink-faint); font-weight: 600;
}
html[lang="ar"] .sec-head__label { letter-spacing: 0.06em; }

/* ============================================================
   hero
   ============================================================ */
.hero {
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding-block: 22vh var(--s-3xl);
  max-width: var(--maxw); margin-inline: auto;
  position: relative;
}
.hero__eyebrow {
  font-size: clamp(0.8rem, 0.7rem + 0.5vw, 1rem);
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--emerald); font-weight: 600;
  margin-block-end: var(--s-lg);
}
html[lang="ar"] .hero__eyebrow { letter-spacing: 0.04em; text-transform: none; }

.hero__name {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(3.5rem, 1.5rem + 14vw, 13rem);
  line-height: 0.86; letter-spacing: -0.03em;
  color: var(--ink);
  display: flex; flex-direction: column;
  text-wrap: balance;
}
html[lang="ar"] .hero__name { letter-spacing: 0; line-height: 1.05; font-weight: 700; }
.hero__line { display: block; }
.hero__line:nth-child(2) { color: var(--teal); }

.hero__lede {
  margin-block-start: var(--s-xl);
  max-width: 46ch;
  font-size: clamp(1.05rem, 0.95rem + 0.6vw, 1.4rem);
  line-height: 1.55; color: var(--ink-mut);
  font-weight: 400;
}

.hero__cta {
  display: flex; flex-wrap: wrap; gap: var(--s-md);
  margin-block-start: var(--s-2xl);
}
.btn {
  display: inline-flex; align-items: center; gap: 0.7rem;
  padding: 0.95rem 1.6rem; border-radius: 999px;
  font-weight: 600; font-size: 1rem;
  transition: transform 0.2s var(--ease), background 0.3s var(--ease),
              color 0.3s var(--ease), border-color 0.3s var(--ease);
  will-change: transform;
}
.btn__arrow { transition: transform 0.3s var(--ease); }
.btn--solid { background: var(--ink); color: var(--bg); }
.btn--solid:hover { background: var(--emerald); }
.btn--solid:hover .btn__arrow { transform: translateY(3px); }
.btn--ghost { border: 1px solid var(--line); color: var(--ink); }
.btn--ghost:hover { border-color: var(--teal); background: color-mix(in oklch, var(--teal) 10%, transparent); }
.btn--ghost:hover .btn__arrow { transform: translateX(4px); }
html[lang="ar"] .btn--ghost .btn__arrow { display: inline-block; transform: scaleX(-1); }
html[lang="ar"] .btn--ghost:hover .btn__arrow { transform: scaleX(-1) translateX(4px); }

.hero__scroll {
  position: absolute; inset-block-end: var(--s-2xl); inset-inline-start: var(--gutter);
  display: flex; align-items: center; gap: 0.75rem;
  font-size: 0.78rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-faint);
}
.hero__scroll-line {
  width: 64px; height: 1px; background: var(--line);
  position: relative; overflow: hidden;
}
.hero__scroll-line::after {
  content: ""; position: absolute; inset: 0; width: 40%;
  background: var(--emerald);
  animation: slide 2.6s var(--ease) infinite;
}
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(260%); } }
html[lang="ar"] .hero__scroll-line::after { animation-direction: reverse; }

/* ============================================================
   about
   ============================================================ */
.about { max-width: var(--maxw); margin-inline: auto; padding-block: var(--s-sec); }
.about__grid {
  display: grid; grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(2rem, 6vw, 6rem); align-items: start;
}
@media (max-width: 880px) { .about__grid { grid-template-columns: 1fr; gap: var(--s-2xl); } }

.about__statement {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(1.7rem, 1.1rem + 2.6vw, 3.1rem);
  line-height: 1.08; letter-spacing: -0.02em;
  text-wrap: balance;
}
html[lang="ar"] .about__statement { line-height: 1.3; letter-spacing: 0; }

.ledger { list-style: none; padding: 0; counter-reset: none; }
.ledger__row {
  display: grid; grid-template-columns: auto 1fr; gap: var(--s-md);
  padding-block: var(--s-md);
  border-block-start: 1px solid var(--line-soft);
  align-items: start;
}
.ledger__row:last-child { border-block-end: 1px solid var(--line-soft); }
.ledger__n {
  font-family: var(--display); font-weight: 700; font-size: 0.8rem;
  color: var(--teal); padding-block-start: 0.25rem;
  font-variant-numeric: tabular-nums;
}
.ledger__t { color: var(--ink-mut); font-size: 1.02rem; line-height: 1.5; }

/* ============================================================
   work / cards  (asymmetric — lead card spans wide)
   ============================================================ */
.work { max-width: var(--maxw); margin-inline: auto; padding-block: var(--s-sec); }
.work__intro {
  font-family: var(--display); font-weight: 500;
  font-size: clamp(1.3rem, 1rem + 1.6vw, 2.1rem);
  line-height: 1.2; letter-spacing: -0.01em;
  max-width: 24ch; margin-block-end: var(--s-2xl); color: var(--ink);
}
html[lang="ar"] .work__intro { line-height: 1.5; }

.cards {
  list-style: none; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr);
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
}
@media (max-width: 720px) { .cards { grid-template-columns: 1fr; } }

.card {
  position: relative; isolation: isolate;
  background: color-mix(in oklch, var(--bg-2) 80%, transparent);
  border: 1px solid var(--line-soft);
  border-radius: 18px;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  display: flex; flex-direction: column; gap: var(--s-md);
  min-height: 14rem;
  overflow: hidden;
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease),
              background 0.4s var(--ease);
}
.card::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(80% 120% at 100% 0%, color-mix(in oklch, var(--teal) 12%, transparent), transparent 60%);
  opacity: 0; transition: opacity 0.5s var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: color-mix(in oklch, var(--teal) 55%, var(--line)); }
.card:hover::before { opacity: 1; }
.card--lead { grid-column: 1 / -1; min-height: 16rem; }
.card--lead .card__name { font-size: clamp(2.4rem, 1.6rem + 4vw, 5rem); }

.card__top { display: flex; align-items: center; justify-content: space-between; }
.card__idx {
  font-family: var(--display); font-weight: 700; font-size: 0.85rem;
  color: var(--ink-faint); font-variant-numeric: tabular-nums;
}
.card__tag {
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 700; color: var(--teal);
  padding: 0.3rem 0.7rem; border-radius: 999px;
  border: 1px solid color-mix(in oklch, var(--teal) 40%, transparent);
}
html[lang="ar"] .card__tag { letter-spacing: 0; }
.card__tag--live { color: var(--emerald); border-color: color-mix(in oklch, var(--emerald) 40%, transparent); }
.card__tag--wip {
  color: var(--indigo); border-color: color-mix(in oklch, var(--indigo) 45%, transparent);
}
.card__tag--wip::before {
  content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--indigo); margin-inline-end: 0.4rem; vertical-align: middle;
  animation: pulse 1.8s var(--ease) infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.25; } }

.card__name {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(1.9rem, 1.4rem + 2.4vw, 2.8rem);
  line-height: 0.95; letter-spacing: -0.02em; color: var(--ink);
  margin-block-start: auto;
}
.card__name-ar { font-family: "Reem Kufi", sans-serif; font-weight: 600; color: var(--ink-mut); font-size: 0.62em; margin-inline-start: 0.3em; }
.card__desc { color: var(--ink-mut); font-size: 1rem; line-height: 1.5; max-width: 52ch; }

.card__visit {
  display: inline-flex; align-items: center; gap: 0.45rem; align-self: start;
  margin-block-start: 0.4rem;
  font-weight: 600; font-size: 0.92rem; color: var(--teal);
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}
.card__visit:hover { color: var(--emerald); gap: 0.75rem; }
.card__visit-arrow { transition: transform 0.3s var(--ease); }
.card__visit:hover .card__visit-arrow { transform: translate(2px, -2px); }
.card__visit--soon { color: var(--ink-faint); font-weight: 500; }

/* ============================================================
   signal / stats  (typeset ledger, not the big-number template)
   ============================================================ */
.signal { max-width: var(--maxw); margin-inline: auto; padding-block: var(--s-sec); }
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat {
  padding: var(--s-lg) var(--s-md) var(--s-lg) 0;
  border-block-start: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 0.5rem;
}
.stat__v {
  font-family: var(--display); font-weight: 800;
  font-size: clamp(2.6rem, 2rem + 3vw, 4.2rem);
  line-height: 1; color: var(--ink); font-variant-numeric: tabular-nums;
}
.stat:nth-child(1) .stat__v { color: var(--teal); }
.stat:nth-child(2) .stat__v { color: var(--emerald); }
.stat__l { color: var(--ink-faint); font-size: 0.9rem; line-height: 1.4; max-width: 18ch; }

/* ============================================================
   contact
   ============================================================ */
.contact { max-width: var(--maxw); margin-inline: auto; padding-block: var(--s-sec); }
.contact__cta {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2.2rem, 1.4rem + 5vw, 5.5rem);
  line-height: 0.98; letter-spacing: -0.025em;
  text-wrap: balance; color: var(--ink);
}
html[lang="ar"] .contact__cta { line-height: 1.2; letter-spacing: 0; }
.contact__sub {
  margin-block-start: var(--s-lg); max-width: 40ch;
  color: var(--ink-mut); font-size: clamp(1.05rem, 1rem + 0.4vw, 1.25rem);
}

.links { list-style: none; padding: 0; margin-block-start: var(--s-3xl); }
.links__row { border-block-start: 1px solid var(--line-soft); }
.links__row:last-child { border-block-end: 1px solid var(--line-soft); }
.links__a {
  display: flex; align-items: baseline; gap: var(--s-lg);
  padding-block: clamp(1.1rem, 2.4vw, 1.8rem);
  transition: padding-inline-start 0.4s var(--ease), color 0.3s var(--ease);
}
.links__a:hover { padding-inline-start: var(--s-md); color: var(--emerald); }
.links__k {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(1.3rem, 1rem + 1.6vw, 2.2rem);
  min-width: 8rem; color: inherit;
}
.links__v {
  color: var(--ink-faint); font-size: clamp(0.95rem, 0.9rem + 0.4vw, 1.15rem);
  margin-inline-start: auto;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s var(--ease);
  word-break: break-all;
}
.links__a:hover .links__v { color: var(--ink-mut); }

/* ============================================================
   footer
   ============================================================ */
.foot {
  max-width: var(--maxw); margin-inline: auto;
  padding: var(--s-2xl) var(--gutter) var(--s-3xl);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--s-md);
  border-block-start: 1px solid var(--line-soft);
  margin-block-start: var(--s-2xl);
  color: var(--ink-faint); font-size: 0.85rem;
}
.foot__b { letter-spacing: 0.06em; }

/* ============================================================
   reveal animation
   ============================================================ */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .hero__scroll-line::after, .card__tag--wip::before { animation: none; }
  .cur-ring { display: none; }
}