/* ============================================================
   Metric9 — stylesheet
   Palette : drafting paper, graphite ink, deep pine, amber ticks
   Type    : Archivo (display + body) · IBM Plex Sans Arabic · JetBrains Mono
   ============================================================ */

:root {
  --paper:      #EFEDE6;
  --paper-deep: #E5E2D8;
  --ink:        #17191A;
  --ink-soft:   #5F625E;
  --rule:       #CFCCC1;
  --pine:       #0F5C4A;
  --pine-lift:  #14755E;
  --amber:      #C98A16;

  --sans: "Archivo", ui-sans-serif, system-ui, sans-serif;
  --arab: "IBM Plex Sans Arabic", "Archivo", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --gutter: clamp(1.25rem, 5vw, 4.5rem);
  --rail: 4.5rem;
  --measure: 78rem;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  overflow-wrap: break-word;
}

:root[dir="rtl"] body { font-family: var(--arab); line-height: 1.85; }

/* The language flip: the page briefly settles rather than snapping. */
body.is-switching main,
body.is-switching .masthead {
  transition: opacity 0.18s var(--ease), transform 0.34s var(--ease);
  opacity: 0.32;
  transform: translateY(6px);
}

img { max-width: 100%; display: block; }

a { color: inherit; }

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

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

.skip {
  position: absolute;
  inset-block-start: -100vh;
  inset-inline-start: var(--gutter);
  background: var(--ink);
  color: var(--paper);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  font: 500 0.8125rem/1 var(--mono);
}
.skip:focus { inset-block-start: 0.75rem; }

/* ---------------- Masthead ---------------- */

.masthead {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--rule);
}

.masthead__in {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 4vw, 3rem);
  min-height: 4.25rem;
}

.wordmark {
  font-family: var(--sans);
  font-weight: 800;
  font-stretch: 112%;
  font-size: 1.1875rem;
  letter-spacing: -0.035em;
  text-decoration: none;
  white-space: nowrap;
}
.wordmark span { color: var(--pine); }

.nav {
  display: flex;
  gap: clamp(0.9rem, 2.4vw, 2rem);
  margin-inline-start: auto;
  font-size: 0.875rem;
  font-weight: 500;
}
.nav a {
  text-decoration: none;
  color: var(--ink-soft);
  padding-block: 0.25rem;
  border-block-end: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav a:hover { color: var(--ink); border-block-end-color: var(--pine); }

@media (max-width: 46rem) { .nav { display: none; } }

.langswitch {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--rule);
  border-radius: 999px;
  overflow: hidden;
  margin-inline-start: auto;
  flex: none;
}
@media (min-width: 46.0625rem) { .langswitch { margin-inline-start: 0; } }

.langswitch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font: 500 0.75rem/1 var(--mono);
  letter-spacing: 0.06em;
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}
.langswitch button[lang="ar"] { font-family: var(--arab); font-size: 0.875rem; }
.langswitch button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.langswitch button:hover[aria-pressed="false"] { color: var(--ink); }

/* ---------------- Scroll rail (the "metric") ---------------- */

.rail {
  position: fixed;
  inset-block-start: 50%;
  inset-inline-start: 1.15rem;
  transform: translateY(-50%);
  z-index: 60;
  display: grid;
  gap: 1.1rem;
}
@media (max-width: 68rem) { .rail { display: none; } }

.rail a {
  display: grid;
  grid-template-columns: 1.75rem auto;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font: 500 0.625rem/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--ink-soft) 42%, transparent);
  transition: color 0.28s var(--ease);
}
:root[dir="rtl"] .rail a { font-family: var(--arab); letter-spacing: 0; text-transform: none; }

.rail a::before {
  content: "";
  height: 1px;
  width: 0.75rem;
  background: var(--rule);
  justify-self: start;
  transition: width 0.32s var(--ease), background 0.32s var(--ease);
}
:root[dir="rtl"] .rail a::before { justify-self: end; }

.rail a:hover { color: var(--ink-soft); }
.rail a:hover::before { width: 1.5rem; background: var(--ink-soft); }

.rail a[aria-current="true"] { color: var(--ink); }
.rail a[aria-current="true"]::before { width: 1.75rem; background: var(--amber); height: 2px; }

/* ---------------- Sections ---------------- */

.band { padding-block: clamp(3.25rem, 7vw, 5.5rem); }
.band--tight { padding-block: clamp(2.5rem, 5vw, 3.75rem); }
.band + .band { border-block-start: 1px solid var(--rule); }

.eyebrow {
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0 0 clamp(1.75rem, 4vw, 3rem);
}
:root[dir="rtl"] .eyebrow { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.8125rem; }
.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---------------- Hero: the bilingual specimen ---------------- */

.hero { padding-block: clamp(2.75rem, 6vw, 4.5rem) clamp(3.25rem, 7vw, 5.5rem); }

.hero__eyebrow {
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pine);
  margin: 0 0 clamp(2rem, 5vw, 3.5rem);
}
:root[dir="rtl"] .hero__eyebrow { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.8125rem; }

/* Both scripts are always shown. That is the argument the page is making. */
.specimen { display: grid; gap: 0; }

.specimen__line {
  font-weight: 800;
  font-stretch: 118%;
  font-size: clamp(2.35rem, 8.2vw, 6rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  margin: 0;
  text-align: start;
}

.specimen__line--ar {
  font-family: var(--arab);
  font-weight: 700;
  font-stretch: normal;
  letter-spacing: 0;
  line-height: 1.42;
  direction: rtl;
  text-align: start;
  font-size: clamp(1.9rem, 6.6vw, 4.9rem);
}
:root[dir="rtl"] .specimen__line--en { direction: ltr; text-align: start; }

/* the shared baseline between the two scripts */
.specimen__rule {
  position: relative;
  height: 1px;
  background: var(--rule);
  margin-block: clamp(1.1rem, 2.6vw, 1.9rem);
}
.specimen__rule span {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 0;
  transform: translateY(-50%);
  background: var(--paper);
  padding-inline: 0.6rem;
  font: 500 0.625rem/1 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}
:root[dir="rtl"] .specimen__rule span { font-family: var(--arab); letter-spacing: 0; text-transform: none; }

.specimen__rule::before,
.specimen__rule::after {
  content: "";
  position: absolute;
  inset-block-start: -3px;
  width: 1px;
  height: 7px;
  background: var(--amber);
}
.specimen__rule::before { inset-inline-start: 0; }
.specimen__rule::after  { inset-inline-start: 3.5rem; }

.hero__sub {
  max-width: 46ch;
  margin: clamp(2rem, 5vw, 3.25rem) 0 0;
  font-size: clamp(1.0625rem, 0.98rem + 0.42vw, 1.3125rem);
  color: var(--ink-soft);
  line-height: 1.66;
}
:root[dir="rtl"] .hero__sub { line-height: 1.9; max-width: 48ch; }

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-block-start: clamp(2rem, 4vw, 2.75rem);
}

/* ---------------- Buttons ---------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  font-family: var(--sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
:root[dir="rtl"] .btn { font-family: var(--arab); }
.btn:hover { background: var(--pine); border-color: var(--pine); transform: translateY(-2px); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule); }
.btn--ghost:hover { background: transparent; border-color: var(--ink); color: var(--ink); }

.btn__arrow { transition: transform 0.24s var(--ease); }
:root[dir="rtl"] .btn__arrow { transform: scaleX(-1); }
.btn:hover .btn__arrow { transform: translateX(3px); }
:root[dir="rtl"] .btn:hover .btn__arrow { transform: scaleX(-1) translateX(3px); }

/* ---------------- Work ---------------- */

.case {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3.5rem);
  grid-template-columns: 1fr;
  padding: clamp(1.75rem, 4vw, 3rem);
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-radius: 4px;
}
@media (min-width: 56rem) { .case { grid-template-columns: 1.15fr 1fr; align-items: start; } }

.case__client {
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  letter-spacing: -0.035em;
  line-height: 1.04;
  margin: 0 0 0.5rem;
}
:root[dir="rtl"] .case__client { font-stretch: normal; letter-spacing: 0; }

.case__sector {
  font: 500 0.6875rem/1.5 var(--mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pine);
  margin: 0 0 clamp(1.25rem, 3vw, 1.75rem);
}
:root[dir="rtl"] .case__sector { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.8125rem; }

.case__desc { margin: 0 0 1.75rem; color: var(--ink-soft); }

.case__specs {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  gap: 0;
  border-block-start: 1px solid var(--rule);
}
.case__specs li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-block: 0.7rem;
  border-block-end: 1px solid var(--rule);
  font: 500 0.8125rem/1 var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink);
}
:root[dir="rtl"] .case__specs li { font-family: var(--arab); letter-spacing: 0; font-size: 0.9375rem; }
.case__specs li::before {
  content: "";
  width: 0.5rem;
  height: 1px;
  background: var(--amber);
  flex: none;
}

.case__links { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* ---------------- Grid cards ---------------- */

.grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  grid-template-columns: 1fr;
}
@media (min-width: 44rem)   { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 62rem)   { .grid--3 { grid-template-columns: repeat(3, 1fr); } }

.card { border-block-start: 2px solid var(--ink); padding-block-start: 1.4rem; }

.card__t {
  font-size: 1.1875rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.7rem;
}
:root[dir="rtl"] .card__t { letter-spacing: 0; }

.card__d { margin: 0; color: var(--ink-soft); font-size: 0.9375rem; }

/* ---------------- Pricing ---------------- */

.tier {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: clamp(1.5rem, 3vw, 2rem);
  background: var(--paper);
  position: relative;
}
.tier--lead { border-color: var(--pine); border-width: 2px; background: var(--paper-deep); }

.tier__tag {
  position: absolute;
  inset-block-start: -0.65rem;
  inset-inline-start: clamp(1.5rem, 3vw, 2rem);
  background: var(--pine);
  color: var(--paper);
  font: 500 0.625rem/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
}
:root[dir="rtl"] .tier__tag { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.75rem; }

.tier__t {
  font: 500 0.6875rem/1 var(--mono);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.9rem;
}
:root[dir="rtl"] .tier__t { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.8125rem; }

.tier__p {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  font-weight: 800;
  font-stretch: 112%;
  letter-spacing: -0.035em;
  margin: 0 0 1rem;
  line-height: 1.1;
}
:root[dir="rtl"] .tier__p { font-stretch: normal; letter-spacing: 0; }

.tier__d { margin: 0 0 1.5rem; color: var(--ink-soft); font-size: 0.9375rem; flex: 1; }

.tier__time {
  font: 500 0.75rem/1 var(--mono);
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--rule);
}
:root[dir="rtl"] .tier__time { font-family: var(--arab); letter-spacing: 0; font-size: 0.875rem; }

.pricing__note {
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

/* ---------------- Contact ---------------- */

.contact { display: grid; gap: clamp(1.75rem, 4vw, 3rem); }
@media (min-width: 56rem) { .contact { grid-template-columns: 1fr 1fr; align-items: end; } }

.contact__head {
  font-weight: 800;
  font-stretch: 115%;
  font-size: clamp(1.85rem, 5vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.04em;
  margin: 0 0 1.1rem;
}
:root[dir="rtl"] .contact__head { font-stretch: normal; letter-spacing: 0; line-height: 1.4; }

.contact__body { margin: 0; color: var(--ink-soft); max-width: 42ch; }

.mail {
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(1rem, 2.6vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--ink);
  border-block-end: 2px solid var(--amber);
  padding-block-end: 0.3rem;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
  direction: ltr;
}
.mail:hover { color: var(--pine); border-block-end-color: var(--pine); }

.contact__meta {
  margin: 1.5rem 0 0;
  font: 500 0.75rem/1.7 var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
:root[dir="rtl"] .contact__meta { font-family: var(--arab); letter-spacing: 0; font-size: 0.875rem; }

/* ---------------- Footer ---------------- */

.foot {
  border-block-start: 1px solid var(--rule);
  padding-block: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  align-items: center;
  justify-content: space-between;
  font: 500 0.75rem/1.6 var(--mono);
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
:root[dir="rtl"] .foot { font-family: var(--arab); letter-spacing: 0; font-size: 0.875rem; }

/* ---------------- Case study page ---------------- */

.cs__meta {
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-block-start: 1px solid var(--rule);
  max-width: 34rem;
}
.cs__meta div {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 0.85rem;
  border-block-end: 1px solid var(--rule);
  font: 500 0.8125rem/1.4 var(--mono);
  letter-spacing: 0.04em;
}
:root[dir="rtl"] .cs__meta div { font-family: var(--arab); letter-spacing: 0; font-size: 0.9375rem; }
.cs__meta dt { color: var(--ink-soft); margin: 0; }
.cs__meta dd { margin: 0; text-align: end; }

.prose { max-width: 62ch; }
.prose h2 {
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: clamp(2.5rem, 6vw, 3.75rem) 0 1rem;
}
:root[dir="rtl"] .prose h2 { letter-spacing: 0; }
.prose h2:first-child { margin-block-start: 0; }
.prose p { margin: 0; color: var(--ink-soft); }

.backlink {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font: 500 0.75rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  text-decoration: none;
  margin-block-end: clamp(2rem, 5vw, 3rem);
}
:root[dir="rtl"] .backlink { font-family: var(--arab); letter-spacing: 0; text-transform: none; font-size: 0.875rem; }
.backlink:hover { color: var(--pine); }
.backlink span { transition: transform 0.22s var(--ease); }
:root[dir="rtl"] .backlink span { transform: scaleX(-1); }
.backlink:hover span { transform: translateX(-3px); }
:root[dir="rtl"] .backlink:hover span { transform: scaleX(-1) translateX(-3px); }

/* ---------------- Entrance ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

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