/* =============================================================================
   Melta Labs — Trust-First Corporate design system
   Single shared stylesheet for EN (LTR) and AR (RTL).
   Direction is driven entirely by the document `dir` attribute + CSS logical
   properties, so this one file renders correctly in both languages.
   ============================================================================= */

/* ----------------------------------------------------------------- Tokens -- */
:root {
  /* Brand navy */
  --color-navy-900: #0A1F3C;
  --color-navy-800: #0E2A4E;
  --color-navy-700: #143A66;

  /* Corporate-blue accent */
  --color-accent-600: #1E63D8;
  --color-accent-700: #1750B3;
  --color-accent-50:  #EAF1FD;

  /* Ink (text on light) */
  --color-ink-900: #0F1B2D;
  --color-ink-600: #46556B;
  --color-ink-400: #54637A;

  /* Surfaces */
  --color-surface-0:   #FFFFFF;
  --color-surface-50:  #F6F8FC;
  --color-surface-100: #EEF2F8;

  /* Lines */
  --color-border:        #DCE3ED;
  --color-border-strong: #C3CEDD;

  --color-success-600: #1A8F5C;
  --color-focus-ring:  #1E63D8;

  /* Navy-tinted elevation */
  --color-shadow-rgb: 14, 42, 78;
  --shadow-xs: 0 1px 2px rgba(var(--color-shadow-rgb), .06);
  --shadow-sm: 0 2px 8px rgba(var(--color-shadow-rgb), .06), 0 1px 2px rgba(var(--color-shadow-rgb), .04);
  --shadow-md: 0 8px 24px rgba(var(--color-shadow-rgb), .08), 0 2px 6px rgba(var(--color-shadow-rgb), .05);
  --shadow-lg: 0 16px 48px rgba(var(--color-shadow-rgb), .10);

  /* Footer (on navy) */
  --color-footer-text:    rgba(255, 255, 255, .72);
  --color-footer-strong:  #FFFFFF;
  --color-footer-divider: rgba(255, 255, 255, .12);

  /* Type families */
  --font-heading: "Plus Jakarta Sans", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body:    "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-arabic:  "IBM Plex Sans Arabic", "Noto Sans Arabic", "Segoe UI", Tahoma, sans-serif;

  /* Type scale — 1.250 Major Third on 16px */
  --fs-xs:   0.75rem;     /* 12 */
  --fs-sm:   0.875rem;    /* 14 */
  --fs-base: 1rem;        /* 16 */
  --fs-md:   1.125rem;    /* 18 */
  --fs-lg:   1.25rem;     /* 20 */
  --fs-xl:   1.5625rem;   /* 25 */
  --fs-2xl:  1.9375rem;   /* 31 */
  --fs-3xl:  2.4375rem;   /* 39 */
  --fs-hero: clamp(2.5rem, 1.6rem + 3.4vw, 3.75rem);

  --lh-tight: 1.12;
  --lh-snug:  1.3;
  --lh-base:  1.65;

  /* Spacing (8px grid) */
  --space-1: 4px;  --space-2: 8px;  --space-3: 12px; --space-4: 16px;
  --space-5: 24px; --space-6: 32px; --space-7: 48px; --space-8: 64px;
  --space-9: 96px; --space-10: 128px;
  --section-pad: clamp(64px, 8vw, 112px);
  --container-max: 1140px;
  --container-pad: clamp(20px, 5vw, 32px);

  /* Radius */
  --radius-sm: 8px;  --radius-md: 12px; --radius-lg: 16px;
  --radius-xl: 24px; --radius-pill: 999px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur-fast: 120ms; --dur-base: 180ms; --dur-slow: 320ms;
}

/* --------------------------------------------------------------- Reset ----- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-ink-600);
  background: var(--color-surface-0);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-ink-900); line-height: var(--lh-snug); letter-spacing: -0.02em; font-weight: 700; }
h1 { line-height: var(--lh-tight); }

a { color: var(--color-accent-600); text-decoration: none; }
a:hover { color: var(--color-accent-700); }

img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

/* ---------------------------------------------------- Arabic / RTL rules --- */
[lang="ar"] body,
[dir="rtl"] body,
[lang="ar"] h1, [lang="ar"] h2, [lang="ar"] h3, [lang="ar"] h4,
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] h4 {
  font-family: var(--font-arabic);
}
/* Arabic must never be tracked or uppercased; give it diacritic headroom. */
[dir="rtl"] body { line-height: 1.75; }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3, [dir="rtl"] h4 { letter-spacing: 0; line-height: 1.22; }
[dir="rtl"] .eyebrow,
[dir="rtl"] .contact-card__label,
[dir="rtl"] .stat__label,
[dir="rtl"] .facts__label { letter-spacing: 0; text-transform: none; }
/* Directional glyphs (e.g. the privacy back-arrow) mirror; brand icons never do. */
[dir="rtl"] .icon-directional { transform: scaleX(-1); }

/* ------------------------------------------------------------- Utilities --- */
.container { max-width: var(--container-max); margin-inline: auto; padding-inline: var(--container-pad); }

.bdi, bdi { unicode-bidi: isolate; }

.skip-link {
  position: absolute; inset-block-start: -100px; inset-inline-start: var(--space-4);
  z-index: 1000; background: var(--color-navy-800); color: #fff;
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm);
  font-size: var(--fs-sm); font-weight: 600;
}
.skip-link:focus { inset-block-start: var(--space-3); color: #fff; }

:focus-visible {
  outline: 3px solid var(--color-focus-ring);
  outline-offset: 2px;
  border-radius: 2px;
}
/* Skip-link moves focus into <main>; don't draw a ring around the whole region. */
main[tabindex="-1"]:focus { outline: none; }

.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-family: var(--font-body); font-size: var(--fs-sm); font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--color-accent-600);
}
.eyebrow::before {
  content: ""; inline-size: 24px; block-size: 2px;
  background: var(--color-accent-600); border-radius: 2px;
}

/* -------------------------------------------------------------- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-body); font-size: var(--fs-base); font-weight: 600;
  padding-block: 13px; padding-inline: 26px;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  cursor: pointer; transition: background var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.btn svg { inline-size: 18px; block-size: 18px; }

.btn--primary { background: var(--color-navy-800); color: #fff; box-shadow: var(--shadow-xs); }
.btn--primary:hover { background: var(--color-navy-700); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn--primary:active { transform: translateY(0); }

.btn--ghost { background: transparent; color: var(--color-navy-800); border-color: var(--color-border-strong); }
.btn--ghost:hover { color: var(--color-accent-700); border-color: var(--color-accent-600); background: var(--color-accent-50); }

.btn--sm { padding-block: 9px; padding-inline: 18px; font-size: var(--fs-sm); }

/* --------------------------------------------------------------- Header ---- */
.site-header {
  position: sticky; inset-block-start: 0; z-index: 100;
  background: var(--color-surface-0);
  border-block-end: 1px solid transparent;
  transition: background var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  border-block-end-color: var(--color-border);
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header.is-scrolled { background: #fff; }
}
.header-bar { display: flex; align-items: center; gap: var(--space-5); block-size: 72px; }

.brand { display: inline-flex; align-items: center; gap: var(--space-3); color: var(--color-ink-900); font-family: var(--font-heading); font-weight: 700; font-size: var(--fs-md); }
.brand:hover { color: var(--color-ink-900); }
.brand__mark { inline-size: 36px; block-size: 36px; border-radius: var(--radius-sm); background: var(--color-navy-800); display: grid; place-items: center; flex: none; }
.brand__mark svg { inline-size: 22px; block-size: 22px; }

.primary-nav { margin-inline-start: auto; }
.primary-nav ul { display: flex; align-items: center; gap: var(--space-6); }
.primary-nav a {
  position: relative; color: var(--color-ink-600); font-size: var(--fs-sm); font-weight: 500;
  padding-block: var(--space-2); transition: color var(--dur-base) var(--ease-out);
}
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--color-ink-900); }
.primary-nav a::after {
  content: ""; position: absolute; inset-block-end: 0; inset-inline-start: 0;
  inline-size: 100%; block-size: 2px; background: var(--color-accent-600);
  transform: scaleX(0); transform-origin: inline-start;
  transition: transform var(--dur-base) var(--ease-out);
}
.primary-nav a:hover::after, .primary-nav a:focus-visible::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }

/* Language toggle */
.lang-toggle { display: inline-flex; align-items: stretch; border: 1px solid var(--color-border-strong); border-radius: var(--radius-pill); overflow: hidden; font-size: var(--fs-sm); font-weight: 600; }
.lang-toggle a { padding-block: 6px; padding-inline: 14px; color: var(--color-ink-600); display: inline-flex; align-items: center; transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out); }
.lang-toggle a[aria-current="true"] { background: var(--color-navy-800); color: #fff; }
.lang-toggle a:not([aria-current="true"]):hover { background: var(--color-accent-50); color: var(--color-accent-700); }

/* Hamburger */
.nav-toggle { display: none; background: transparent; border: 1px solid var(--color-border-strong); border-radius: var(--radius-sm); inline-size: 42px; block-size: 42px; place-items: center; color: var(--color-ink-900); cursor: pointer; }
.nav-toggle svg { inline-size: 22px; block-size: 22px; }
.nav-toggle .icon-close { display: none; }
.nav-toggle[aria-expanded="true"] .icon-open { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* --------------------------------------------------------------- Hero ------ */
.hero { padding-block: var(--section-pad); background: var(--color-surface-0); border-block-start: 1px solid var(--color-border); }
.hero__grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-8); align-items: center; }
.hero h1 { font-size: var(--fs-hero); color: var(--color-navy-800); margin-block: var(--space-4); }
.hero__lead { font-size: var(--fs-md); color: var(--color-ink-600); max-inline-size: 52ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-block-start: var(--space-6); }
.trust-strip { display: flex; flex-wrap: wrap; gap: var(--space-2) 0; margin-block-start: var(--space-6); font-size: var(--fs-sm); color: var(--color-ink-400); }
.trust-strip span { display: inline-flex; align-items: center; }
.trust-strip span + span::before { content: "·"; margin-inline: var(--space-3); color: var(--color-border-strong); }

/* Capability panel */
.capability-panel { background: var(--color-surface-0); border: 1px solid var(--color-border); border-radius: var(--radius-xl); box-shadow: var(--shadow-md); padding: var(--space-6); }
.capability-panel h2 { font-size: var(--fs-sm); font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-ink-400); margin-block-end: var(--space-4); }
.capability-list li { display: flex; align-items: center; gap: var(--space-3); padding-block: var(--space-3); }
.capability-list li + li { border-block-start: 1px solid var(--color-border); }
.capability-list .mini-icon { inline-size: 32px; block-size: 32px; border-radius: var(--radius-sm); background: var(--color-accent-50); display: grid; place-items: center; flex: none; color: var(--color-accent-600); }
.capability-list .mini-icon svg { inline-size: 18px; block-size: 18px; }
.capability-list span { color: var(--color-ink-900); font-weight: 500; font-size: var(--fs-base); }

/* --------------------------------------------------------------- Section --- */
.section { padding-block: var(--section-pad); }
.section--band { background: var(--color-surface-50); border-block: 1px solid var(--color-border); }
.section-head { text-align: center; max-inline-size: 640px; margin-inline: auto; margin-block-end: var(--space-7); }
.section-head .eyebrow { margin-block-end: var(--space-3); }
.section-head h2 { font-size: var(--fs-3xl); color: var(--color-navy-800); }
.section-head p { margin-block-start: var(--space-3); color: var(--color-ink-600); font-size: var(--fs-md); }

/* --------------------------------------------------------------- Cards ------ */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
@media (max-width: 960px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .card-grid { grid-template-columns: 1fr; } }

.service-card {
  background: var(--color-surface-0); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow-xs);
  text-align: start;
  transition: border-color var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.service-card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.icon-tile { inline-size: 48px; block-size: 48px; border-radius: var(--radius-sm); background: var(--color-accent-50); display: grid; place-items: center; color: var(--color-accent-600); margin-block-end: var(--space-4); }
.icon-tile svg { inline-size: 24px; block-size: 24px; }
.service-card h3 { font-size: var(--fs-lg); color: var(--color-ink-900); margin-block-end: var(--space-2); }
.service-card p { color: var(--color-ink-600); font-size: var(--fs-base); }

/* --------------------------------------------------------------- About ----- */
.about__top { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-8); align-items: start; }
.about__narrative p { color: var(--color-ink-600); font-size: var(--fs-md); margin-block-start: var(--space-4); }
.about__narrative .eyebrow { margin-block-end: var(--space-3); }
.about__narrative h2 { font-size: var(--fs-2xl); color: var(--color-navy-800); }

.facts { background: var(--color-surface-0); border: 1px solid var(--color-border); border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); padding-inline: var(--space-6); }
.facts__row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); padding-block: var(--space-4); }
.facts__row + .facts__row { border-block-start: 1px solid var(--color-border); }
.facts__label { color: var(--color-ink-400); font-size: var(--fs-sm); }
.facts__value { color: var(--color-ink-900); font-weight: 500; font-size: var(--fs-base); text-align: end; }

.stats { margin-block-start: var(--space-7); background: var(--color-surface-100); border: 1px solid var(--color-border); border-radius: var(--radius-lg); display: grid; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }
.stat { padding: var(--space-6); text-align: center; }
.stat + .stat { border-inline-start: 1px solid var(--color-border); }
@media (max-width: 720px) { .stat + .stat { border-inline-start: 0; } .stat:nth-child(n+2) { border-block-start: 1px solid var(--color-border); } .stat:nth-child(2) { border-block-start: 0; } }
.stat__num { font-family: var(--font-heading); font-weight: 800; font-size: var(--fs-3xl); color: var(--color-navy-800); line-height: var(--lh-tight); font-variant-numeric: tabular-nums; }
.stat__label { display: block; margin-block-start: var(--space-2); color: var(--color-ink-400); font-size: var(--fs-sm); }

/* --------------------------------------------------------------- Contact --- */
.contact-card { background: var(--color-surface-0); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-6); text-align: start; box-shadow: var(--shadow-xs); transition: box-shadow var(--dur-base) var(--ease-out); font-style: normal; }
.contact-card:hover { box-shadow: var(--shadow-sm); }
.contact-card .icon-tile { inline-size: 40px; block-size: 40px; margin-block-end: var(--space-4); }
.contact-card .icon-tile svg { inline-size: 20px; block-size: 20px; }
.contact-card__label { display: block; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-ink-400); font-size: var(--fs-xs); font-weight: 600; margin-block-end: var(--space-1); }
.contact-card__value { color: var(--color-ink-900); font-size: var(--fs-base); font-weight: 500; word-break: break-word; }
.contact-card__value a { color: var(--color-ink-900); }
.contact-card__value a:hover { color: var(--color-accent-700); }
.phone { font-variant-numeric: tabular-nums; }

/* --------------------------------------------------------------- Footer ---- */
.site-footer { background: var(--color-navy-900); color: var(--color-footer-text); padding-block: var(--space-8) var(--space-6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-7); }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); } }
.footer-brand .brand { color: #fff; }
.footer-brand p { margin-block-start: var(--space-3); font-size: var(--fs-sm); max-inline-size: 36ch; }
.footer-col h2 { font-size: var(--fs-sm); color: #fff; font-family: var(--font-body); text-transform: uppercase; letter-spacing: 0.06em; margin-block-end: var(--space-4); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-3); }
.footer-col a { color: var(--color-footer-text); font-size: var(--fs-sm); }
.footer-col a:hover { color: #fff; }
.footer-legal { margin-block-start: var(--space-7); padding-block-start: var(--space-5); border-block-start: 1px solid var(--color-footer-divider); display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-3); align-items: baseline; }
.footer-legal address { font-style: normal; font-size: var(--fs-sm); color: var(--color-footer-text); }
.footer-legal address .strong { color: var(--color-footer-strong); font-weight: 600; }
.footer-legal .copyright { font-size: var(--fs-xs); color: var(--color-footer-text); }

/* --------------------------------------------------------- Legal / privacy - */
.legal-page { padding-block: var(--space-8) var(--section-pad); }
.legal-page .prose { max-inline-size: 760px; margin-inline: auto; }
.legal-page .back { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--color-ink-400); font-size: var(--fs-sm); margin-block-end: var(--space-6); }
.legal-page .back svg { inline-size: 16px; block-size: 16px; }
.legal-page h1 { font-size: var(--fs-3xl); color: var(--color-navy-800); }
.legal-page .updated { color: var(--color-ink-400); font-size: var(--fs-sm); margin-block-start: var(--space-2); margin-block-end: var(--space-6); }
.legal-page h2 { font-size: var(--fs-lg); color: var(--color-ink-900); margin-block-start: var(--space-6); margin-block-end: var(--space-2); }
.legal-page p { color: var(--color-ink-600); margin-block-end: var(--space-3); }
.legal-page .legal-foot { margin-block-start: var(--space-7); padding-block-start: var(--space-5); border-block-start: 1px solid var(--color-border); color: var(--color-ink-400); font-size: var(--fs-sm); }

/* --------------------------------------------------- Mobile nav behaviour -- */
@media (max-width: 860px) {
  .nav-toggle { display: grid; }
  .primary-nav { position: absolute; inset-inline: 0; inset-block-start: 72px; background: var(--color-surface-0); border-block-end: 1px solid var(--color-border); box-shadow: var(--shadow-md); margin-inline-start: 0; padding: var(--space-4) var(--container-pad); display: none; }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: 0; }
  .primary-nav li { border-block-end: 1px solid var(--color-border); }
  .primary-nav li:last-child { border-block-end: 0; }
  .primary-nav a { display: block; padding-block: var(--space-4); }
  .primary-nav a::after { display: none; }
  .header-actions .btn--sm { display: none; }
  .hero__grid, .about__top { grid-template-columns: 1fr; }
  .capability-panel { order: 2; }
}

/* ------------------------------------------------------- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto !important; }
}