/* ============================================================
   Yazeed Bin Thnayan — portfolio
   Editorial, bilingual (EN/AR), bidirectional.
   All direction-sensitive rules use logical properties so the
   same stylesheet serves LTR and RTL without a second sheet.
   ============================================================ */

/* ── Tokens ────────────────────────────────────────────────── */

:root {
  --font-en: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --font-ar: "SF Arabic", "Segoe UI", "Noto Naskh Arabic", "Dubai", "Tahoma", sans-serif;
  --font: var(--font-en);
  --font-num: "Helvetica Neue", -apple-system, "Segoe UI", Arial, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   clamp(1.25rem, 1.05rem + 0.9vw, 1.625rem);
  --text-xl:   clamp(1.75rem, 1.3rem + 2.1vw, 2.75rem);
  --text-2xl:  clamp(2.5rem, 1.4rem + 5vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem;  --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.5rem;  --space-6: 2rem;
  --space-8: 3rem;    --space-10: 4rem;   --space-12: 5.5rem;

  --section-y: clamp(4.5rem, 9vw, 8rem);
  --wrap: 1080px;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --header-h: 62px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 320ms;
  --dur-slow: 620ms;

  /* Near-monochrome. Navy is the HIH7 identity colour, used sparingly. */
  --bg: #fbfbfb;
  --bg-2: #f4f4f3;
  --text: #16171a;
  --text-2: #5c5f66;
  --text-3: #8b8e96;
  --rule: #e2e2e0;
  --rule-strong: #c9c9c6;
  --accent: #1B3A5C;
  --accent-ink: #ffffff;
  --live: #1d6b45;

  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0b0b0c;
  --bg-2: #121214;
  --text: #f2f2f0;
  --text-2: #9b9ea6;
  --text-3: #6f727a;
  --rule: #232326;
  --rule-strong: #4a4a50;
  --accent: #8fb4d6;
  --accent-ink: #0b1c2c;
  --live: #5cc48d;

  color-scheme: dark;
}

[data-lang="ar"] { --font: var(--font-ar); }

/* ── Reset ─────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--text-base);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.is-locked { overflow: hidden; }

h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.12; letter-spacing: -0.02em; }
[data-lang="ar"] h1, [data-lang="ar"] h2,
[data-lang="ar"] h3, [data-lang="ar"] h4 { letter-spacing: 0; line-height: 1.3; }

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
dl, dd { margin: 0; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }

a { color: inherit; text-decoration: none; }

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

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ── Language switching ────────────────────────────────────────
   Both languages ship in the HTML — crawlable, and readable with
   JS disabled. Only the inactive one is hidden. */

[data-lang="en"] [lang="ar"] { display: none; }
[data-lang="ar"] [lang="en"] { display: none; }

/* data-show opts an element out of the lang rules above, so a control can
   display the *other* language's word while keeping a correct lang attribute. */
[data-lang="en"] [data-show="en"],
[data-lang="ar"] [data-show="ar"] { display: inline; }
[data-lang="en"] [data-show="ar"],
[data-lang="ar"] [data-show="en"] { display: none; }

::selection { background: var(--accent); color: var(--accent-ink); }

.skip-link {
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  transform: translateY(-120%);
  z-index: 100;
  padding: var(--space-3) var(--space-5);
  background: var(--text);
  color: var(--bg);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus-visible { transform: none; }

/* ── Layout ────────────────────────────────────────────────── */

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

.section { padding-block: var(--section-y); }
.section--rule { border-block-start: 1px solid var(--rule); }

section[id] { scroll-margin-top: calc(var(--header-h) + var(--space-4)); }

.section__head { margin-block-end: var(--space-10); }

.section__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}
[data-lang="ar"] .section__label { letter-spacing: 0; text-transform: none; }

.section__title {
  margin-block-start: var(--space-4);
  font-size: var(--text-xl);
  max-width: 22ch;
  text-wrap: balance;
}

.subhead {
  margin-block: var(--space-12) var(--space-5);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}
[data-lang="ar"] .subhead { letter-spacing: 0; text-transform: none; }

/* ── Header ────────────────────────────────────────────────── */

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  backdrop-filter: saturate(160%) blur(14px);
  border-block-end: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.site-header.is-scrolled { border-block-end-color: var(--rule); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  height: var(--header-h);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.mark__glyph {
  display: grid;
  place-items: center;
  width: 26px; height: 26px;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 6px;
  font-size: 15px;
  line-height: 1;
  padding-block-end: 2px;
}

.nav ul { display: flex; gap: var(--space-6); }

.nav__link {
  position: relative;
  font-size: var(--text-sm);
  color: var(--text-2);
  padding-block: var(--space-2);
  transition: color var(--dur) var(--ease);
}
.nav__link:hover { color: var(--text); }
.nav__link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transition: transform var(--dur) var(--ease);
}
.nav__link.is-active { color: var(--text); }
.nav__link.is-active::after { transform: scaleX(1); }

.header__actions { display: flex; align-items: center; gap: var(--space-2); }

.lang-toggle {
  padding: 0.3em 0.7em;
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
  color: var(--text-2);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.lang-toggle:hover { color: var(--text); border-color: var(--text-3); }

.icon-button {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 999px;
  color: var(--text-2);
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.icon-button:hover { color: var(--text); }

.icon {
  grid-area: 1 / 1;
  width: 17px; height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.icon--moon { opacity: 0; transform: scale(0.7); }
[data-theme="dark"] .icon--sun { opacity: 0; transform: scale(0.7); }
[data-theme="dark"] .icon--moon { opacity: 1; transform: none; }

.menu-toggle { display: none; flex-direction: column; gap: 5px; }
.menu-toggle__bar {
  width: 16px; height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease);
}
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:first-child { transform: translateY(3.25px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__bar:last-child { transform: translateY(-3.25px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 40;
  display: flex;
  align-items: center;
  padding: var(--gutter);
  background: var(--bg);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu.is-open { opacity: 1; }
.mobile-menu ul { display: grid; gap: var(--space-5); }
.mobile-menu a { font-size: var(--text-xl); font-weight: 600; }

/* ── Buttons & links ───────────────────────────────────────── */

.button {
  display: inline-flex;
  align-items: center;
  padding: 0.72em 1.5em;
  background: var(--text);
  color: var(--bg);
  border: 1px solid var(--text);
  border-radius: 999px;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: opacity var(--dur) var(--ease), background-color var(--dur) var(--ease),
              color var(--dur) var(--ease);
}
.button:hover { opacity: 0.84; }

.button--quiet {
  background: transparent;
  color: var(--text);
  border-color: var(--rule-strong);
}
.button--quiet:hover { opacity: 1; border-color: var(--text); }

.link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  border-block-end: 1px solid var(--rule-strong);
  padding-block-end: 1px;
  transition: border-color var(--dur) var(--ease);
}
.link:hover { border-block-end-color: var(--text); }

/* ── Hero ──────────────────────────────────────────────────── */

.hero {
  display: flex;
  align-items: flex-end;
  min-height: min(84vh, 760px);
  padding-block: var(--space-12) var(--space-10);
}

.hero__title {
  margin-block-start: var(--space-5);
  font-size: var(--text-2xl);
  letter-spacing: -0.035em;
  text-wrap: balance;
}
[data-lang="ar"] .hero__title { letter-spacing: 0; }
.hero__title em { font-style: normal; color: var(--text-3); }

.hero__lede {
  margin-block-start: var(--space-6);
  max-width: 52ch;
  font-size: var(--text-md);
  color: var(--text-2);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-block-start: var(--space-8);
}

.eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}
[data-lang="ar"] .eyebrow { letter-spacing: 0; text-transform: none; }

/* ── Work ──────────────────────────────────────────────────── */

.work { border-block-start: 1px solid var(--rule); }

.work__item {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-8);
  border-block-end: 1px solid var(--rule);
  transition: border-color var(--dur) var(--ease);
}
.work__item:hover { border-block-end-color: var(--rule-strong); }

.work__index {
  font-family: var(--font-num);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  color: var(--text-3);
  padding-block-start: 0.35em;
  transition: color var(--dur) var(--ease);
}
.work__item:hover .work__index { color: var(--accent); }

.work__title { font-size: var(--text-lg); }

.work__desc {
  margin-block-start: var(--space-4);
  max-width: 58ch;
  color: var(--text-2);
}

.work__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-block-start: var(--space-5);
  font-size: var(--text-xs);
  color: var(--text-3);
}
.work__meta > span { display: inline-flex; align-items: center; gap: 0.4em; }

.tag-live { color: var(--live); }
.tag-live::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.work__links { margin-block-start: var(--space-5); }

/* ── Figures ───────────────────────────────────────────────── */

.figures {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr));
}

.figure dt {
  font-family: var(--font-num);
  font-size: clamp(2.25rem, 1.6rem + 2.6vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
[data-lang="ar"] .figure dt { letter-spacing: -0.02em; }

.figure dd {
  margin-block-start: var(--space-4);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid var(--rule);
  font-size: var(--text-sm);
  color: var(--text-2);
}

/* ── Roles ─────────────────────────────────────────────────── */

.roles { border-block-start: 1px solid var(--rule); }

.role {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-block-end: 1px solid var(--rule);
}

.role__period {
  font-size: var(--text-xs);
  color: var(--text-3);
  padding-block-start: 0.3em;
  font-variant-numeric: tabular-nums;
}

.role__title { font-size: var(--text-md); }
.role__org { margin-block-start: var(--space-1); font-size: var(--text-sm); color: var(--text-2); }
.role__note {
  margin-block-start: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-2);
  max-width: 60ch;
}

.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chips li {
  padding: 0.42em 0.9em;
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-size: var(--text-xs);
  color: var(--text-2);
}

/* ── Credentials ───────────────────────────────────────────── */

.creds {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
}
.creds li {
  padding-block-start: var(--space-5);
  border-block-start: 1px solid var(--rule-strong);
}
.creds h3 { font-size: var(--text-md); }
.creds p { margin-block-start: var(--space-2); font-size: var(--text-sm); color: var(--text-3); }

/* ── About ─────────────────────────────────────────────────── */

/* Portrait sits beside the bio: the one piece of colour on the page, held to a
   narrow column so it reads as a detail rather than a hero image. */
.about__grid {
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
  gap: var(--space-10);
  align-items: start;
}

.about__portrait { margin: 0; }
.about__portrait img {
  width: 100%;
  /* height:auto is required — the width/height attributes act as presentational
     hints and would otherwise beat aspect-ratio, rendering the image full height. */
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--rule);
}

.prose { max-width: 62ch; }
.prose p { color: var(--text-2); font-size: var(--text-md); text-wrap: pretty; }
.prose p + p { margin-block-start: var(--space-5); }
[data-lang="ar"] .prose p + p,
[data-lang="en"] .prose p + p { margin-block-start: var(--space-5); }

.capabilities {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  margin-block-start: var(--space-12);
  padding-block-start: var(--space-8);
  border-block-start: 1px solid var(--rule);
}
.capabilities h3 {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-block-end: var(--space-4);
}
[data-lang="ar"] .capabilities h3 { letter-spacing: 0; text-transform: none; }
.capabilities ul { display: grid; gap: var(--space-2); }
.capabilities li { font-size: var(--text-sm); color: var(--text-2); }

/* ── Contact ───────────────────────────────────────────────── */

.contact__title {
  margin-block-start: var(--space-4);
  font-size: var(--text-xl);
  max-width: 20ch;
  text-wrap: balance;
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-block-start: var(--space-8);
}
.contact__primary {
  font-size: var(--text-md);
  font-weight: 500;
  border-block-end: 1px solid var(--rule-strong);
  padding-block-end: 2px;
  transition: border-color var(--dur) var(--ease);
}
.contact__primary:hover { border-block-end-color: var(--text); }

/* ── Footer ────────────────────────────────────────────────── */

.site-footer {
  padding-block: var(--space-6);
  border-block-start: 1px solid var(--rule);
  font-size: var(--text-xs);
  color: var(--text-3);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

/* ── Motion ────────────────────────────────────────────────── */

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity var(--dur-slow) var(--ease) var(--reveal-delay, 0ms),
              transform var(--dur-slow) var(--ease) var(--reveal-delay, 0ms);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

/* ── Responsive ────────────────────────────────────────────── */

@media (max-width: 900px) {
  .role { grid-template-columns: 1fr; gap: var(--space-2); }
  .role__period { padding-block-start: 0; }
  .about__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .about__portrait { max-width: 240px; }
}

@media (max-width: 720px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
  .hero { min-height: auto; padding-block: var(--space-10) var(--space-8); }
  .work__item { grid-template-columns: 1fr; gap: var(--space-2); }
  .work__index { padding-block-start: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}

/* ── Print ─────────────────────────────────────────────────── */

/* Ctrl+P should produce a clean CV, not a screenshot of a website.
   Only the active language prints, so it stays to a couple of pages. */
@media print {
  .site-header, .mobile-menu, .icon-button, .lang-toggle,
  .hero__actions, .site-footer .link, .skip-link { display: none !important; }

  html, body { background: #fff !important; color: #000 !important; }

  [data-reveal] { opacity: 1 !important; transform: none !important; }

  .hero { min-height: 0; padding-block: 0 1.5rem; page-break-after: avoid; }
  .hero__title { font-size: 1.9rem; }
  .hero__lede { font-size: 1rem; }

  .section { padding-block: 1.25rem; border-block-start: 1px solid #ccc; }
  .section__title { font-size: 1.35rem; }

  .work__item, .role, .figure, .creds li { page-break-inside: avoid; }
  .section__head { margin-block-end: 1rem; page-break-after: avoid; }

  .work__desc, .role__note, .prose p { color: #222 !important; }
  .chips li, .creds li { border-color: #ccc !important; }

  /* Print the destination of real links only — anchors would be noise. */
  a[href^="http"]::after,
  a[href^="mailto"]::after {
    content: " (" attr(href) ")";
    font-size: 0.78em;
    color: #555;
    word-break: break-all;
  }

  @page { margin: 16mm; }
}