/* ==========================================================================
   OSN — Apple design system
   كل القيم هنا مأخوذة من DESIGN.md اللي اتبعت — الألوان والمسافات والخطوط
   وقواعد الاستخدام (أزرق واحد للفعل، بدون ظلال على الكروت، حواف 980px للأزرار)
   ========================================================================== */

:root {
  /* ── الألوان ── */
  --color-apple-blue:  #0071e3;
  --color-link-blue:   #0066cc;
  --color-signal-blue: #2997ff;
  --color-carbon:      #1d1d1f;
  --color-frost:       #f5f5f7;
  --color-ice:         #f4f8fb;
  --color-smoke:       #333333;
  --color-graphite:    #474747;
  --color-ash:         #707070;
  --color-mist:        #858585;
  --color-onyx:        #000000;
  --color-pebble:      #e2e2e5;
  --color-hairline:    #d2d2d7;
  --color-white:       #ffffff;

  /* ── الخطوط ── */
  --font-display: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-text:    "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-arab:    "IBM Plex Sans Arabic", "Segoe UI", ui-sans-serif, sans-serif;

  /* ── المقاييس ── */
  --text-caption:     12px;
  --text-body-sm:     14px;
  --text-body:        17px;
  --text-subheading:  21px;
  --text-heading-sm:  28px;
  --text-heading:     40px;
  --text-heading-lg:  44px;
  --text-display:     56px;

  /* ── المسافات ── */
  --spacing-4: 4px;   --spacing-8: 8px;   --spacing-12: 12px;
  --spacing-16: 16px; --spacing-20: 20px; --spacing-24: 24px;
  --spacing-40: 40px; --spacing-48: 48px; --spacing-56: 56px;

  /* ── الحواف ── */
  --radius-cards:  8px;
  --radius-full:   980px;

  --shadow-xl: rgba(0, 0, 0, 0.22) 3px 5px 30px 0px;

  --page-max-width: 1440px;
  --text-max-width: 980px;
  --section-gap: 64px;

  --ease: cubic-bezier(0.28, 0.11, 0.32, 1);
}

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

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

body {
  margin: 0;
  background: var(--color-frost);
  color: var(--color-carbon);
  font-family: var(--font-text);
  font-size: var(--text-body);
  line-height: 1.47;
  letter-spacing: -0.016em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.lang-ar {
  font-family: var(--font-arab);
  letter-spacing: 0;
  line-height: 1.75;
}

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

h1, h2, h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
}
body.lang-ar h1,
body.lang-ar h2,
body.lang-ar h3 { font-family: var(--font-arab); font-weight: 700; }

p { margin: 0 0 1em; }

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

::selection { background: var(--color-signal-blue); color: var(--color-white); }

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

.shell {
  width: 100%;
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 56px);
}

.prose {
  max-width: var(--text-max-width);
  margin-inline: auto;
}

.skip {
  position: absolute;
  inset-block-start: -100px;
  inset-inline-start: 12px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--color-carbon);
  color: var(--color-white);
  border-radius: 4px;
}
.skip:focus { inset-block-start: 12px; }

/* ── الهيدر: Global Nav Bar ───────────────────────────────────────────── */

.site-head {
  position: sticky;
  inset-block-start: 0;
  z-index: 60;
  background: var(--color-carbon);
  border-block-end: 1px solid var(--color-smoke);
}

.head-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 52px;
  padding-block: var(--spacing-8);
}

.logo { display: flex; align-items: center; gap: 9px; margin-inline-end: auto; }
.logo-mark { width: 22px; flex: none; }
.logo-text { display: grid; line-height: 1.15; }
.logo-text strong {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-frost);
}
body.lang-ar .logo-text strong { font-family: var(--font-arab); }
.logo-text small { font-size: 10.5px; color: var(--color-mist); }

.head-nav { display: flex; gap: 26px; }
.head-nav a {
  font-size: var(--text-caption);
  color: var(--color-frost);
  opacity: 0.82;
  transition: opacity 0.2s var(--ease);
}
.head-nav a:hover { opacity: 1; }

.head-side { display: flex; align-items: center; gap: 14px; }

.lang-btn {
  padding: 5px 13px;
  font-size: var(--text-caption);
  border: 1px solid var(--color-graphite);
  border-radius: var(--radius-full);
  color: var(--color-frost);
  transition: border-color 0.2s var(--ease);
}
.lang-btn:hover { border-color: var(--color-mist); }
.lang-btn.is-latin { font-family: var(--font-display); }

.burger {
  display: none;
  width: 36px; height: 32px;
  padding: 9px 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.burger span {
  display: block;
  height: 1.5px;
  background: var(--color-frost);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.burger span + span { margin-block-start: 5px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── الهيرو: Typographic hero على Frost ───────────────────────────────── */

.hero {
  background: var(--color-frost);
  text-align: center;
  padding-block: clamp(64px, 10vw, 112px) clamp(48px, 7vw, 80px);
}

.hero-inner { max-width: 760px; margin-inline: auto; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 var(--spacing-24);
  padding: 6px 15px;
  font-size: var(--text-caption);
  color: var(--color-graphite);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-full);
  background: var(--color-white);
}
.hero-badge .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-apple-blue);
}

.hero-title {
  margin: 0 0 var(--spacing-16);
  font-size: clamp(2.1rem, 5.2vw, var(--text-display));
  line-height: 1.07;
  letter-spacing: 0.01em;
  color: var(--color-carbon);
  text-wrap: balance;
}
body.lang-ar .hero-title { letter-spacing: 0; line-height: 1.25; }

.hero-sub {
  max-width: 58ch;
  margin-inline: auto;
  margin-block-end: var(--spacing-40);
  font-size: var(--text-subheading);
  font-weight: 300;
  line-height: 1.4;
  color: var(--color-graphite);
  text-wrap: pretty;
}
body.lang-ar .hero-sub { font-weight: 400; line-height: 1.7; }

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-16);
  justify-content: center;
  margin-block-end: var(--spacing-48);
}

.hero-feats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 28px;
  margin: 0;
  padding: var(--spacing-24) 0 0;
  list-style: none;
  font-size: var(--text-body-sm);
  color: var(--color-ash);
  border-block-start: 1px solid var(--color-hairline);
}
.hero-feats li { display: flex; align-items: center; gap: 8px; }
.hero-feats li::before {
  content: "";
  width: 5px; height: 5px;
  flex: none;
  border-radius: 50%;
  background: var(--color-signal-blue);
}

/* ── الأزرار ────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 15px;
  min-width: 132px;
  border-radius: var(--radius-full);
  font: inherit;
  font-family: var(--font-text);
  font-size: var(--text-body);
  font-weight: 400;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease),
              color 0.2s var(--ease), opacity 0.2s var(--ease);
}
body.lang-ar .btn { font-family: var(--font-arab); }

.btn-solid {
  background: var(--color-apple-blue);
  color: var(--color-white);
}
.btn-solid:hover { opacity: 0.88; }
.btn-solid[disabled] { opacity: 0.5; cursor: progress; }

.btn-outline {
  background: transparent;
  border-color: var(--color-link-blue);
  color: var(--color-link-blue);
}
.btn-outline:hover { background: rgba(0, 102, 204, 0.06); }

.btn-sm { padding: 8px 15px; font-size: var(--text-body-sm); min-width: 0; }

.ghost-link {
  color: var(--color-link-blue);
  font-size: var(--text-body);
}
.ghost-link:hover { text-decoration: underline; }

/* ── الأرقام ────────────────────────────────────────────────────────────── */

.stats { background: var(--color-white); border-block: 1px solid var(--color-hairline); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.stat {
  padding: var(--spacing-40) var(--spacing-24);
  text-align: center;
  border-inline-start: 1px solid var(--color-hairline);
}
.stat:first-child { border-inline-start: 0; }
.stat-value {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-heading);
  font-weight: 600;
  color: var(--color-carbon);
  letter-spacing: 0.011em;
}
body.lang-ar .stat-value { font-family: var(--font-arab); }
.stat-label { display: block; margin-block-start: 6px; font-size: var(--text-body-sm); color: var(--color-ash); }

/* ── الأقسام ────────────────────────────────────────────────────────────── */

.band { padding-block: var(--section-gap); background: var(--color-frost); }
.band-wash { background: var(--color-ice); }

.band-head { max-width: var(--text-max-width); margin-block-end: var(--spacing-48); }
.band-head.is-center { margin-inline: auto; text-align: center; }

.kicker {
  margin: 0 0 var(--spacing-12);
  font-size: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-apple-blue);
}

.band h2 {
  font-size: clamp(1.6rem, 3.4vw, var(--text-heading));
  letter-spacing: 0.011em;
  color: var(--color-carbon);
  text-wrap: balance;
}
body.lang-ar .band h2 { letter-spacing: 0; }
.band-head .lede {
  margin-block-start: var(--spacing-16);
  font-size: var(--text-subheading);
  font-weight: 300;
  color: var(--color-graphite);
}
body.lang-ar .band-head .lede { font-weight: 400; }

/* الخدمات: صفوف أفقية بحد فاصل شعرة — بدون كروت، الكانفاس نفسه هو السطح */
.svc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-block-start: 1px solid var(--color-hairline);
}
.svc {
  display: grid;
  grid-template-columns: 1fr 1.55fr;
  gap: var(--spacing-40);
  padding-block: var(--spacing-40);
  border-block-end: 1px solid var(--color-hairline);
}
.svc h3 {
  font-size: var(--text-heading-sm);
  font-weight: 600;
  color: var(--color-carbon);
}
.svc-body p { color: var(--color-graphite); font-size: var(--text-body); margin-block-end: var(--spacing-16); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chips li {
  padding: 5px 13px;
  font-size: var(--text-caption);
  color: var(--color-graphite);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-full);
  background: var(--color-white);
}

/* طريقة الشغل: أربعة أعمدة بخط علوي رفيع */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}
.step {
  padding: var(--spacing-24) var(--spacing-24) 0 0;
  padding-inline: 0 var(--spacing-24);
  border-block-start: 2px solid var(--color-carbon);
}
.step-num {
  display: block;
  margin-block-end: var(--spacing-16);
  font-family: var(--font-display);
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-mist);
}
body.lang-ar .step-num { font-family: var(--font-arab); }
.step h3 { font-size: var(--text-subheading); font-weight: 600; margin-block-end: var(--spacing-8); }
.step p { color: var(--color-graphite); font-size: var(--text-body-sm); }

/* عن الشركة */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}
.about-text p { color: var(--color-graphite); font-size: var(--text-body); }
.about-text h2 { margin-block-end: var(--spacing-20); }

.about-points {
  margin: 0;
  padding: var(--spacing-24) 0 0;
  list-style: none;
  border-block-start: 1px solid var(--color-hairline);
}
.about-points li {
  position: relative;
  padding-block: var(--spacing-16);
  padding-inline-start: 24px;
  font-size: var(--text-body-sm);
  color: var(--color-carbon);
  border-block-end: 1px solid var(--color-hairline);
}
.about-points li::before {
  content: "";
  position: absolute;
  inset-block-start: 21px;
  inset-inline-start: 0;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-apple-blue);
}

/* ── التواصل ────────────────────────────────────────────────────────────── */

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(32px, 6vw, 64px);
  align-items: start;
}

.contact-info { margin: var(--spacing-24) 0 var(--spacing-24); display: grid; gap: 2px; }
.contact-info > div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  padding-block: var(--spacing-12);
  border-block-end: 1px solid var(--color-hairline);
}
.contact-info dt { color: var(--color-ash); font-size: var(--text-body-sm); }
.contact-info dd { margin: 0; font-size: var(--text-body); color: var(--color-carbon); }
.contact-info a:hover { color: var(--color-link-blue); }

.contact-form {
  padding: clamp(20px, 4vw, 32px);
  background: var(--color-white);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-cards);
}

.hp { position: absolute; inset-inline-start: -9999px; width: 1px; height: 1px; overflow: hidden; }

.field { margin-block-end: var(--spacing-16); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-16); }

.field label {
  display: block;
  margin-block-end: 6px;
  font-size: var(--text-body-sm);
  color: var(--color-graphite);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 11px 14px;
  font: inherit;
  font-size: var(--text-body);
  color: var(--color-carbon);
  background: var(--color-frost);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-cards);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.field textarea { resize: vertical; min-height: 116px; }
.field select { appearance: none; cursor: pointer; }

.field input::placeholder,
.field textarea::placeholder { color: var(--color-mist); }

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-apple-blue);
  box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.18);
}

.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-color: #d70015; }
.field-error { display: block; margin-block-start: 6px; font-size: var(--text-caption); color: #d70015; }

.form-note {
  margin: 0 0 var(--spacing-16);
  padding: 12px 15px;
  font-size: var(--text-body-sm);
  border-radius: var(--radius-cards);
  border: 1px solid var(--color-hairline);
}
.form-note.is-ok  { color: #0a6b3e; border-color: #b6e4cd; background: #eefbf3; }
.form-note.is-bad { color: #a2170a; border-color: #f3c2bb; background: #fdf1ef; }

.form-foot { display: flex; flex-wrap: wrap; align-items: center; gap: var(--spacing-16); margin-block-start: 4px; }
.form-foot small { color: var(--color-ash); font-size: var(--text-caption); }

/* ── الفوتر ─────────────────────────────────────────────────────────────── */

.site-foot { background: var(--color-frost); border-block-start: 1px solid var(--color-hairline); }
.foot-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: var(--spacing-40);
  padding-block: var(--spacing-56) var(--spacing-40);
}
.foot-grid h2 {
  font-size: var(--text-caption);
  font-weight: 600;
  color: var(--color-carbon);
  margin-block-end: var(--spacing-12);
}
.foot-grid nav a, .foot-grid div > a, .foot-grid div > span {
  display: block;
  font-size: var(--text-caption);
  color: var(--color-ash);
  padding-block: 5px;
}
.foot-grid nav a:hover, .foot-grid div > a:hover { color: var(--color-carbon); }
.foot-brand { font-family: var(--font-display); font-size: var(--text-body); font-weight: 600; margin-block-end: 8px; color: var(--color-carbon); }
body.lang-ar .foot-brand { font-family: var(--font-arab); }
.foot-brand span { font-weight: 400; font-size: var(--text-caption); color: var(--color-ash); }
.foot-blurb { color: var(--color-ash); font-size: var(--text-caption); max-width: 34ch; }

.foot-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--spacing-12);
  padding-block: var(--spacing-16);
  border-block-start: 1px solid var(--color-hairline);
  color: var(--color-ash);
  font-size: var(--text-caption);
}
.foot-bar a:hover { color: var(--color-link-blue); }

/* ── الشاشات الصغيرة ────────────────────────────────────────────────────── */

@media (max-width: 980px) {
  .svc { grid-template-columns: 1fr; gap: var(--spacing-16); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-24) var(--spacing-24); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-inline-start: 0; }
  .stat:nth-child(n+3) { border-block-start: 1px solid var(--color-hairline); }
  .about-grid, .contact-grid, .foot-grid { grid-template-columns: 1fr; }
  .foot-grid { gap: var(--spacing-24); }
}

@media (max-width: 760px) {
  .head-nav {
    position: fixed;
    inset-block-start: 53px;
    inset-inline: 0;
    flex-direction: column;
    gap: 0;
    padding: 8px clamp(20px, 5vw, 56px) 20px;
    background: var(--color-carbon);
    border-block-end: 1px solid var(--color-smoke);
    clip-path: inset(0 0 100% 0);
    transition: clip-path 0.3s var(--ease);
  }
  .head-nav.is-open { clip-path: inset(0 0 0 0); }
  .head-nav a { padding-block: 13px; font-size: var(--text-body); border-block-end: 1px solid var(--color-smoke); }

  .burger { display: block; }

  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .hero-inner { text-align: start; }
  .hero-badge { margin-inline: 0; }
  .hero-feats { justify-content: flex-start; }

  .steps { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .field-row { grid-template-columns: 1fr; gap: 0; }
  .contact-info > div { grid-template-columns: 1fr; gap: 2px; }
}

/* ── احترام تفضيل تقليل الحركة ──────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}