/* =========================================================================
   Caelum Jets — design system
   Concept: "the stratosphere at dusk." Light, airy content anchored by
   deep twilight-navy bands. Signature: the flight-path route type.
   Display: Marcellus (Roman inscriptional serif) · Body: Inter
   ========================================================================= */

:root {
  /* palette */
  --ink:      #0c1a2b;   /* stratosphere navy — dark bg + heading ink on light */
  --ink-2:    #16283d;   /* raised dark surface */
  --gold:     #c9a95f;   /* champagne brass accent */
  --gold-soft:#e6d3a3;
  --paper:    #f6f2ea;   /* warm off-white — light bg */
  --paper-2:  #fffdf9;   /* card surface */
  --muted:    #5c6672;   /* secondary text on light */
  --muted-d:  #9fb0c2;   /* secondary text on dark */
  --line:     #e5ddcf;   /* hairline on light */
  --line-d:   rgba(201,169,95,.30); /* gold hairline on dark */

  /* type */
  --serif: "Marcellus", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* fluid scale */
  --fs-eyebrow: .75rem;
  --fs-body:    1.0625rem;
  --fs-lead:    clamp(1.15rem, 1.8vw, 1.4rem);
  --fs-h3:      1.3rem;
  --fs-h2:      clamp(1.9rem, 3.6vw, 2.9rem);
  --fs-h1:      clamp(2.4rem, 6vw, 4.6rem);

  /* layout */
  --maxw: 1160px;
  --radius: 3px;
  --ease: cubic-bezier(.2,.6,.2,1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, textarea, select, button { font: inherit; color: inherit; }

body {
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 { font-family: var(--serif); font-weight: 400; line-height: 1.08; color: var(--ink); letter-spacing: .01em; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-family: var(--sans); font-weight: 600; letter-spacing: 0; }
p  { max-width: 65ch; }

/* ---------- layout primitives ---------- */
.container { max-width: var(--maxw); margin-inline: auto; padding-inline: clamp(1.15rem, 4vw, 2rem); }
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.narrow { max-width: 760px; }

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 1.1rem;
}
.lead { font-size: var(--fs-lead); color: var(--muted); line-height: 1.6; }

/* horizon hairline — recurring signature divider */
.horizon { height: 1px; background: linear-gradient(90deg, transparent, var(--line), transparent); border: 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .85rem 1.6rem;
  font-size: .93rem; font-weight: 600; letter-spacing: .02em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}
.btn--gold { background: var(--gold); color: var(--ink); }
.btn--gold:hover { background: var(--gold-soft); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--gold); color: var(--ink); }
.btn--ghost-d { background: transparent; color: #fff; border-color: var(--line-d); }
.btn--ghost-d:hover { border-color: var(--gold); color: var(--gold-soft); }
.btn--wa { background: #25d366; color: #0b3d24; border-color: #25d366; }
.btn--wa:hover { background: #1fbb59; color: #0b3d24; }
.btn--wa svg { width: 1.2em; height: 1.2em; fill: currentColor; }

/* floating WhatsApp button (all pages) */
.wa-float {
  position: fixed; z-index: 80;
  inset-block-end: clamp(1rem, 3vw, 1.6rem); inset-inline-end: clamp(1rem, 3vw, 1.6rem);
  width: 56px; height: 56px; border-radius: 50%;
  background: #25d366; color: #fff; display: grid; place-items: center;
  box-shadow: 0 12px 30px -8px rgba(0,0,0,.45);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.wa-float:hover { transform: translateY(-3px) scale(1.05); color: #fff; box-shadow: 0 16px 36px -8px rgba(0,0,0,.5); }
.wa-float svg { width: 32px; height: 32px; fill: currentColor; }
.wa-float__label { position: absolute; }
.btn:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, .nav-toggle:focus-visible {
  outline: 2px solid var(--gold); outline-offset: 3px;
}

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246,242,234,.86);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; min-height: 74px; }
.wordmark { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--serif); font-size: 1.5rem; letter-spacing: .04em; color: var(--ink); }
.wordmark__mark { width: 1.55em; height: 1.55em; flex: none; }
.wordmark span { color: var(--gold); }
.nav { display: flex; align-items: center; gap: 1.9rem; }
.nav a { font-size: .95rem; color: var(--ink); transition: color .2s var(--ease); }
.nav a:not(.btn):hover { color: var(--gold); }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.5rem; color: var(--ink); line-height: 1; padding: .3rem .4rem; }

/* ---------- hero ---------- */
.hero {
  position: relative; color: #fff; overflow: hidden;
  background: radial-gradient(120% 90% at 78% 8%, #1f3a57 0%, #12263c 42%, var(--ink) 100%);
}
.hero--image { background-size: cover; background-position: center; }
.hero::after { /* dusk horizon glow */
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(70% 55% at 50% 118%, rgba(201,169,95,.20), transparent 70%),
    linear-gradient(180deg, rgba(8,18,30,.30), rgba(8,18,30,.66));
}
.hero__inner { position: relative; z-index: 1; padding-block: clamp(4.5rem, 13vw, 8.5rem); max-width: 820px; }
.hero .eyebrow { color: var(--gold-soft); }
.hero h1 { color: #fff; }
.hero__sub { color: #dbe4ee; font-size: var(--fs-lead); margin-top: 1.4rem; max-width: 46ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2.2rem; }

/* ---------- flight-path signature ---------- */
.route-path { display: flex; align-items: center; gap: 1rem; }
.route-path__code { font-family: var(--serif); font-size: clamp(1.5rem, 3vw, 2.1rem); letter-spacing: .06em; color: var(--ink); white-space: nowrap; }
.route-path__line { position: relative; flex: 1 1 auto; height: 1px; background: linear-gradient(90deg, var(--gold), var(--gold)); min-width: 46px; }
.route-path__line::before { content: ""; position: absolute; left: 0; top: 50%; width: 5px; height: 5px; border-radius: 50%; background: var(--gold); transform: translateY(-50%); }
.route-path__line::after { content: "\2708"; position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); font-size: .95rem; color: var(--gold); background: var(--paper-2); padding: 0 .35rem; }
/* hero variant on dark */
.route-strip { margin-top: clamp(2.5rem, 6vw, 3.6rem); padding-top: 1.8rem; border-top: 1px solid var(--line-d); display: flex; flex-wrap: wrap; align-items: center; gap: 1.4rem 2.2rem; }
.route-strip__label { font-size: var(--fs-eyebrow); letter-spacing: .24em; text-transform: uppercase; color: var(--muted-d); }
.route-strip .route-path__code { color: #fff; }
.route-strip .route-path__line::after { background: transparent; color: var(--gold-soft); }
.route-strip .route-path { flex: 1 1 240px; }

/* ---------- pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.5rem, 4vw, 3rem); }
.pillar { border-top: 2px solid var(--gold); padding-top: 1.4rem; }
.pillar h3 { font-family: var(--serif); font-weight: 400; font-size: 1.55rem; letter-spacing: .02em; }
.pillar p { color: var(--muted); margin-top: .6rem; font-size: 1rem; }

/* ---------- generic content ---------- */
.section-head { max-width: 640px; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head p { color: var(--muted); margin-top: .8rem; }
.prose > * + * { margin-top: 1.15rem; }
.prose h2 { margin-top: 2.6rem; }
.prose h3 { margin-top: 2rem; }
.prose ul { padding-left: 1.2rem; color: var(--muted); }
.prose li + li { margin-top: .4rem; }
.prose a { color: var(--ink); border-bottom: 1px solid var(--gold); }
.prose a:hover { color: var(--gold); }

/* ---------- route cards grid ---------- */
.route-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.2rem; }
.route-card {
  display: block; background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.6rem 1.6rem 1.4rem;
  transition: border-color .25s var(--ease), transform .25s var(--ease), box-shadow .25s var(--ease);
}
.route-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: 0 14px 34px -22px rgba(12,26,43,.5); }
.route-card__img { width: calc(100% + 3.2rem); margin: -1.6rem -1.6rem 1.2rem; max-width: none; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius) var(--radius) 0 0; background: var(--ink); }
.route-card__meta { margin-top: 1.1rem; font-size: .85rem; letter-spacing: .04em; color: var(--muted); text-transform: uppercase; }
.route-card__hook { margin-top: .7rem; color: var(--muted); font-size: .97rem; }

/* ---------- facts row ---------- */
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1.4rem; border-block: 1px solid var(--line); padding-block: 1.8rem; }
.fact__k { font-size: var(--fs-eyebrow); letter-spacing: .2em; text-transform: uppercase; color: var(--gold); }
.fact__v { font-family: var(--serif); font-size: 1.5rem; margin-top: .35rem; }

/* ---------- dark band ---------- */
.band { background: var(--ink); color: #fff; }
.band h2 { color: #fff; }
.band .lead, .band p { color: var(--muted-d); }
.band .eyebrow { color: var(--gold-soft); }

/* ---------- cta band ---------- */
.cta-band { background: var(--ink-2); color: #fff; text-align: center; }
.cta-band::after { content: ""; display: block; }
.cta-band h2 { color: #fff; }
.cta-band p { color: var(--muted-d); margin: 1rem auto 0; }
.cta-band .btn { margin-top: 2rem; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.4rem, 3vw, 2.4rem); counter-reset: step; }
.step { }
.step__n { font-family: var(--serif); font-size: 2.4rem; color: var(--gold); line-height: 1; }
.step h3 { margin-top: .7rem; }
.step p { color: var(--muted); margin-top: .5rem; font-size: 1rem; }

/* ---------- faq ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 1.2rem 0; }
.faq summary { font-family: var(--serif); font-size: 1.25rem; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--gold); font-family: var(--sans); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { margin-top: .9rem; color: var(--muted); }

/* ---------- form ---------- */
.form { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: flex; flex-direction: column; gap: .4rem; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.field input, .field textarea {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius);
  padding: .8rem .9rem; transition: border-color .2s var(--ease);
}
.field input:focus, .field textarea:focus { border-color: var(--gold); outline: none; }
.form .btn { grid-column: 1 / -1; justify-self: start; }
#form-note { grid-column: 1 / -1; color: var(--muted); font-size: .92rem; }

.contact-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin-top: 1.6rem; }
.contact-card { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; }
.contact-card .fact__k { color: var(--gold); }
.contact-card a { display: inline-block; margin-top: .3rem; border-bottom: 1px solid var(--gold); }

/* ---------- footer ---------- */
.site-footer { background: #08131f; color: var(--muted-d); }
.site-footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 2rem; padding-block: clamp(3rem, 6vw, 4.5rem); }
.site-footer h4 { font-family: var(--sans); font-size: .78rem; letter-spacing: .18em; text-transform: uppercase; color: var(--gold); font-weight: 600; margin-bottom: 1rem; }
.site-footer a { display: block; padding: .18rem 0; color: var(--muted-d); transition: color .2s var(--ease); }
.site-footer a:hover { color: var(--gold-soft); }
.site-footer .wordmark { color: #fff; }
.site-footer__brand p { color: var(--muted-d); margin-top: .9rem; font-size: .95rem; max-width: 34ch; }
.site-footer__bar { border-top: 1px solid rgba(255,255,255,.08); padding-block: 1.3rem; display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; justify-content: space-between; font-size: .82rem; color: var(--muted-d); }

/* ---------- comparison table ---------- */
.compare-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.compare { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--paper-2); }
.compare caption { text-align: left; padding: 1rem 1.1rem; color: var(--muted); font-size: .9rem; caption-side: bottom; }
.compare th, .compare td { padding: .95rem 1.1rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare thead th { font-family: var(--serif); font-weight: 400; font-size: 1.15rem; color: var(--ink); letter-spacing: .01em; }
.compare thead th.is-feature { color: var(--gold); }
.compare tbody th { font-weight: 600; color: var(--ink); font-size: .95rem; }
.compare td { color: var(--muted); font-size: .95rem; }
.compare col.col-feature, .compare .is-feature { background: rgba(201,169,95,.07); }
.compare tbody tr:last-child th, .compare tbody tr:last-child td { border-bottom: 0; }

/* ---------- utilities ---------- */
.stack-lg > * + * { margin-top: 1.5rem; }
.mt-cta { margin-top: 2.2rem; }
.center { text-align: center; }
.maxw-content { max-width: 720px; margin-inline: auto; }

/* ---------- language switcher ---------- */
.langsel { position: relative; }
.langsel > summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: .3rem; font-size: .9rem; color: var(--ink); padding: .3rem .2rem; }
.langsel > summary::-webkit-details-marker { display: none; }
.langsel > summary::after { content: "▾"; font-size: .7em; color: var(--gold); }
.langsel[open] > summary { color: var(--gold); }
.langsel__menu { position: absolute; top: calc(100% + .5rem); inset-inline-end: 0; background: var(--paper-2); border: 1px solid var(--line); border-radius: var(--radius); padding: .35rem; min-width: 8.5rem; box-shadow: 0 14px 34px -22px rgba(12,26,43,.5); z-index: 60; }
.langsel__menu a { display: block; padding: .5rem .7rem; font-size: .9rem; border-radius: 2px; color: var(--ink); font-family: var(--sans); }
.langsel__menu a:hover { background: rgba(201,169,95,.12); color: var(--ink); }
.langsel__menu a[aria-current="true"] { color: var(--gold); font-weight: 600; }

/* ---------- Arabic / RTL ---------- */
html[lang="ar"] {
  --serif: "Amiri", "Times New Roman", serif;
  --sans: "Noto Sans Arabic", system-ui, "Segoe UI", Tahoma, sans-serif;
  direction: rtl;
}
html[lang="ar"] .route-path, html[lang="ar"] .route-strip { direction: ltr; }
html[lang="ar"] .eyebrow { letter-spacing: .12em; }
html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] h3, html[lang="ar"] .wordmark { letter-spacing: 0; }
html[lang="ar"] .fact__k, html[lang="ar"] .field label, html[lang="ar"] .route-card__meta { letter-spacing: .04em; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav {
    position: fixed; inset: 74px 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); border-bottom: 1px solid var(--line);
    padding: .5rem 1.15rem 1.15rem;
    transform: translateY(-140%); transition: transform .3s var(--ease);
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { padding: .85rem .2rem; border-bottom: 1px solid var(--line); }
  .nav a.btn { margin-top: .8rem; justify-content: center; }
  .nav-toggle { display: inline-block; }
  .langsel { border-top: 1px solid var(--line); padding: .5rem 0; }
  .langsel__menu { position: static; box-shadow: none; border: 0; padding: .2rem 0 0; min-width: 0; background: transparent; }
  .langsel__menu a { padding: .55rem .2rem; }
  .pillars, .steps { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .site-footer__grid { grid-template-columns: 1fr; }
}

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