/* =========================================================
   Star Investment & Development — Awwwards-level styles
   Vanilla CSS · Navy + Gold · Bilingual (LTR/RTL)
   ========================================================= */

:root {
  --navy-dark: #050A15;
  --navy: #0A1B3F;
  --navy-soft: #0e2350;
  --gold: #D4AF37;
  --gold-light: #E8C872;
  --bone: #F4F4F0;
  --slate: #8A99AF;
  --line: rgba(255, 255, 255, 0.10);

  --bg: var(--navy-dark);
  --text: var(--bone);

  --font-display: "Clash Display", "Cairo", sans-serif;
  --font-body: "IBM Plex Sans", "IBM Plex Sans Arabic", sans-serif;

  --container: 1440px;
  --pad-x: 6vw;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* Arabic typography swap */
html[lang="ar"] {
  --font-display: "Cairo", "Clash Display", sans-serif;
  --font-body: "IBM Plex Sans Arabic", "IBM Plex Sans", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--gold); color: var(--navy-dark); }

/* ---------- Grain ---------- */
.grain {
  position: fixed; inset: 0; z-index: 9999; pointer-events: none;
  opacity: 0.045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Loader ---------- */
.loader {
  position: fixed; inset: 0; z-index: 10000;
  background: var(--navy-dark);
  display: grid; place-items: center;
  transition: opacity 0.6s var(--ease), visibility 0.6s;
  animation: loaderAuto 0.6s var(--ease) 3s forwards; /* CSS safety: hides even if JS fails */
}
.loader.is-done { opacity: 0; visibility: hidden; animation: none; }
@keyframes loaderAuto { to { opacity: 0; visibility: hidden; } }
.loader__inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.loader__mark {
  font-family: var(--font-display); font-size: 4rem; font-weight: 600;
  color: var(--gold); letter-spacing: 0.1em;
}
.loader__bar { width: 160px; height: 2px; background: var(--line); overflow: hidden; }
.loader__fill { display: block; height: 100%; width: 0%; background: var(--gold); }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: transparent;
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; padding: 16px 34px; border-radius: 999px;
  font-family: var(--font-body); font-weight: 500; font-size: 0.95rem;
  letter-spacing: 0.02em; cursor: pointer; overflow: hidden;
  border: 1px solid var(--gold); color: var(--gold); background: transparent;
  transition: color 0.5s var(--ease), border-color 0.5s var(--ease);
}
.btn > span { position: relative; z-index: 2; }
.btn::after {
  content: ""; position: absolute; inset: 0; background: var(--gold);
  transform: scaleX(0); transform-origin: inline-start;
  transition: transform 0.5s var(--ease); z-index: 1;
}
.btn:hover { color: var(--navy-dark); }
.btn:hover::after { transform: scaleX(1); }
.btn--gold { background: var(--gold); color: var(--navy-dark); border-color: var(--gold); }
.btn--gold::after { background: var(--gold-light); }
.btn--gold:hover { color: var(--navy-dark); }
.btn--ghost { color: var(--bone); border-color: var(--line); }
.btn--ghost::after { background: var(--bone); }
.btn--ghost:hover { color: var(--navy-dark); border-color: var(--bone); }
.btn--full { width: 100%; margin-block-start: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; inset-block-start: 0; inset-inline: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px var(--pad-x);
  transition: background 0.4s var(--ease), padding 0.4s var(--ease), backdrop-filter 0.4s;
}
.site-header::before {
  content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; height: 140px; z-index: -1;
  background: linear-gradient(to bottom, rgba(5,10,21,0.6), rgba(5,10,21,0));
  pointer-events: none; transition: opacity 0.4s var(--ease);
}
.site-header.is-scrolled::before { opacity: 0; }
.site-header.is-scrolled {
  background: rgba(5, 10, 21, 0.7); backdrop-filter: blur(16px);
  padding-block: 14px; border-block-end: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { color: var(--gold); font-size: 1.3rem; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: 0.02em; }
.nav { display: flex; gap: 38px; }
.nav__link {
  position: relative; font-size: 0.9rem; letter-spacing: 0.04em; color: rgba(244,244,240,0.85);
  transition: color 0.35s var(--ease); text-shadow: 0 1px 12px rgba(0,0,0,0.4);
}
.nav__link::after {
  content: ""; position: absolute; inset-block-end: -6px; inset-inline-start: 0;
  width: 100%; height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: inline-start; transition: transform 0.4s var(--ease);
}
.nav__link:hover { color: var(--bone); }
.nav__link:hover::after { transform: scaleX(1); }
.lang-toggle {
  display: flex; align-items: center; gap: 4px; padding: 9px 16px;
  background: transparent; border: 1px solid var(--line); border-radius: 999px;
  color: var(--bone); font-family: var(--font-body); font-size: 0.85rem; cursor: pointer;
  transition: border-color 0.35s var(--ease), color 0.35s var(--ease);
}
.lang-toggle:hover { border-color: var(--gold); color: var(--gold); }
.lang-toggle__sep { color: var(--slate); }
body.lang-en .lang-toggle__en { color: var(--gold); }
body.lang-ar .lang-toggle__ar { color: var(--gold); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100svh; display: flex; align-items: flex-end; overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__bg img { width: 100%; height: 115%; object-fit: cover; will-change: transform; }
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(to top, var(--navy-dark) 6%, rgba(5,10,21,0.55) 45%, rgba(5,10,21,0.35) 100%);
}
.hero__content { position: relative; z-index: 2; width: 100%; max-width: var(--container); margin-inline: auto; padding: 0 var(--pad-x) 12vh; }
.reveal-line { overflow: hidden; }
.reveal-line > span, .reveal-line .overline { display: inline-block; }
.overline {
  font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.28em; color: var(--gold);
  font-weight: 500;
}
html[lang="ar"] .overline { letter-spacing: 0.1em; }
.hero__title {
  font-family: var(--font-display); font-weight: 600; line-height: 0.98;
  font-size: clamp(3rem, 8.5vw, 7rem); letter-spacing: -0.02em;
  margin-block: 22px 26px;
}
.hero__title .accent { color: var(--gold); }
.hero__sub-wrap { max-width: 620px; }
.hero__sub { color: rgba(244,244,240,0.82); font-size: clamp(1rem, 1.6vw, 1.25rem); }
.hero__cta { display: flex; gap: 16px; margin-block-start: 34px; flex-wrap: wrap; }
.hero__scroll {
  position: absolute; inset-block-end: 30px; inset-inline-end: var(--pad-x); z-index: 2;
  display: flex; align-items: center; gap: 12px; font-size: 0.75rem; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--slate);
}
.hero__scroll-line { width: 60px; height: 1px; background: var(--slate); position: relative; overflow: hidden; }
.hero__scroll-line::after { content:""; position:absolute; inset:0; background: var(--gold); transform: translateX(-100%); animation: scrollpulse 2.2s var(--ease) infinite; }
@keyframes scrollpulse { 0%{transform:translateX(-100%);}50%{transform:translateX(0);}100%{transform:translateX(100%);} }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; padding-block: 40px; border-block: 1px solid var(--line); background: var(--navy-dark); }
.marquee__track { display: flex; white-space: nowrap; will-change: transform; }
.marquee__track span {
  font-family: var(--font-display); font-weight: 600; font-size: clamp(2.5rem, 8vw, 7rem);
  color: transparent; -webkit-text-stroke: 1px var(--gold); text-stroke: 1px var(--gold);
  padding-inline-end: 0.3em; letter-spacing: 0.01em;
}

/* ---------- Sections ---------- */
section { position: relative; }
.section-head { max-width: var(--container); margin-inline: auto; padding: clamp(5rem,12vh,9rem) var(--pad-x) 0; }
.section-head--center { text-align: center; }
.section-head--center .section-title { margin-inline: auto; }
.section-title {
  font-family: var(--font-display); font-weight: 500; letter-spacing: -0.015em;
  font-size: clamp(2rem, 5vw, 4rem); line-height: 1.05; max-width: 18ch; margin-block-start: 20px;
}
.section-lead { max-width: 60ch; margin-block-start: 26px; color: rgba(244,244,240,0.72); font-size: 1.1rem; }

/* About / chapters */
.about { max-width: var(--container); margin-inline: auto; padding-inline: var(--pad-x); padding-block-end: 2rem; }
.chapters { margin-block-start: clamp(4rem, 8vh, 7rem); display: grid; gap: clamp(3rem, 6vh, 5rem); }
.chapter {
  display: grid; grid-template-columns: 2fr 8fr; gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start; padding-block-end: clamp(3rem,6vh,5rem); border-block-end: 1px solid var(--line);
}
.chapter:last-child { border-block-end: none; }
.chapter__num { font-family: var(--font-display); font-size: clamp(2.5rem,6vw,5rem); color: var(--gold); font-weight: 500; line-height: 1; }
.chapter__title { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.5rem,3vw,2.4rem); margin-block-end: 16px; }
.chapter__text { color: rgba(244,244,240,0.72); max-width: 62ch; font-size: 1.08rem; }

/* Stats */
.stats {
  max-width: var(--container); margin: clamp(4rem,10vh,7rem) auto 0; padding: 0 var(--pad-x);
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line);
}
.stat { background: var(--navy-dark); padding: clamp(2rem,4vw,3.5rem) 1.5rem; text-align: center; }
.stat__num { display: block; font-family: var(--font-display); font-weight: 600; font-size: clamp(2rem,4vw,3.4rem); color: var(--gold); }
.stat__label { display: block; margin-block-start: 10px; color: var(--slate); font-size: 0.85rem; letter-spacing: 0.14em; text-transform: uppercase; }

/* ---------- Services ---------- */
.services { margin-block-start: clamp(3rem,6vh,5rem); }
.service { position: relative; min-height: 100svh; display: flex; align-items: center; overflow: hidden; }
.service__bg { position: absolute; inset: 0; z-index: 0; }
.service__bg img { width: 100%; height: 118%; object-fit: cover; will-change: transform; }
.service__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(to left, rgba(5,10,21,0.18) 0%, rgba(5,10,21,0.52) 100%);
}
html[dir="rtl"] .service__scrim { background: linear-gradient(to right, rgba(5,10,21,0.18) 0%, rgba(5,10,21,0.52) 100%); }
.service__content {
  position: relative; z-index: 2;
  max-inline-size: 560px;
  margin-inline-start: var(--pad-x);
  margin-inline-end: auto;
  background: linear-gradient(120deg, rgba(5,10,21,0.94), rgba(10,27,63,0.78));
  border-inline-start: 2px solid var(--gold);
  padding: clamp(32px, 4vw, 52px);
  border-radius: 3px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}
.service__index { font-family: var(--font-display); font-size: 1rem; color: var(--gold); letter-spacing: 0.2em; }
.service__title { font-family: var(--font-display); font-weight: 500; font-size: clamp(2rem,5vw,3.6rem); line-height: 1.05; margin-block: 18px 22px; }
.service__desc { color: rgba(244,244,240,0.92); font-size: 1.12rem; max-width: 52ch; }

/* ---------- Forms ---------- */
.forms { max-width: var(--container); margin-inline: auto; padding: clamp(5rem,12vh,9rem) var(--pad-x); }
.forms__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(3rem,6vw,6rem); }
.form-block__title { font-family: var(--font-display); font-weight: 500; font-size: clamp(2rem,4vw,3rem); margin-block: 16px 14px; }
.form-block__lead { color: rgba(244,244,240,0.7); max-width: 46ch; margin-block-end: 40px; }
.form { display: grid; gap: 30px; }
.field { position: relative; }
.field input, .field textarea {
  width: 100%; background: transparent; border: none; border-block-end: 1px solid var(--line);
  color: var(--bone); font-family: var(--font-body); font-size: 1rem; padding: 14px 2px; resize: vertical;
  transition: border-color 0.4s var(--ease);
}
.field textarea { min-height: 90px; }
.field input:focus, .field textarea:focus { outline: none; border-block-end-color: var(--gold); }
.field label {
  position: absolute; inset-block-start: 14px; inset-inline-start: 2px; color: var(--slate);
  pointer-events: none; transition: all 0.3s var(--ease); font-size: 1rem;
}
.field input:focus + label, .field input:not(:placeholder-shown) + label,
.field textarea:focus + label, .field textarea:not(:placeholder-shown) + label {
  inset-block-start: -14px; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--gold);
}
/* File field */
.field--file input[type="file"] { position: absolute; opacity: 0; width: 100%; height: 100%; cursor: pointer; }
.file-label {
  display: flex; align-items: center; gap: 14px; padding: 18px 20px; cursor: pointer;
  border: 1px dashed var(--line); border-radius: 10px; color: var(--slate);
  transition: border-color 0.4s var(--ease), color 0.4s var(--ease);
}
.file-label:hover, .field--file:focus-within .file-label { border-color: var(--gold); color: var(--gold); }
.file-label__icon { color: var(--gold); font-size: 1.1rem; }
.file-label.has-file { color: var(--bone); border-color: var(--gold); border-style: solid; }
.form__status { font-size: 0.9rem; min-height: 1.2em; }
.form__status.is-ok { color: var(--gold-light); }
.form__status.is-err { color: #ff8a8a; }
.form__status.is-loading { color: var(--slate); }

/* ---------- Footer ---------- */
.site-footer { border-block-start: 1px solid var(--line); padding: clamp(3rem,6vh,5rem) var(--pad-x) 2rem; }
.footer__top { max-width: var(--container); margin-inline: auto; display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer__name { font-family: var(--font-display); font-weight: 600; display: block; margin-block: 12px 8px; }
.footer__tag { color: var(--slate); font-size: 0.85rem; letter-spacing: 0.1em; }
.footer__label { color: var(--gold); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.2em; display: block; margin-block-end: 16px; }
.footer__col p, .footer__col a { color: rgba(244,244,240,0.72); display: block; margin-block-end: 8px; transition: color 0.3s var(--ease); }
.footer__col a:hover { color: var(--gold); }
.footer__bottom { max-width: var(--container); margin: 3rem auto 0; padding-block-start: 1.5rem; border-block-start: 1px solid var(--line); color: var(--slate); font-size: 0.82rem; }

/* ---------- Reveal states ---------- */
.reveal, .reveal-line > span, .reveal-line .overline { will-change: transform, opacity; }
.no-motion .reveal, .no-motion .reveal-line > span, .no-motion .reveal-line .overline { opacity: 1 !important; transform: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav { display: none; }
  .chapter { grid-template-columns: 1fr; gap: 12px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .forms__grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  :root { --pad-x: 6vw; }
  .stats { grid-template-columns: 1fr 1fr; }
  .hero__cta { width: 100%; }
  .hero__cta .btn { flex: 1; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .hero__scroll-line::after, .marquee__track { animation: none !important; }
  html { scroll-behavior: auto; }
}