:root {
  --bg: #060914;
  --panel: rgba(255, 255, 255, .045);
  --line: rgba(255, 255, 255, .1);
  --text: #eef2ff;
  --muted: #9aa6c7;
  --cyan: #22d3ee;
  --violet: #7c5cff;
  --pink: #f472b6;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --curtain: cubic-bezier(.7, 0, .2, 1);
  --max: 1180px;
  --pad: clamp(16px, 5vw, 40px);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  font-family: "Tajawal", "Segoe UI", Tahoma, sans-serif;
  background:
    radial-gradient(900px 520px at 88% -8%, rgba(124, 92, 255, .30), transparent 60%),
    radial-gradient(720px 440px at 0% 22%, rgba(34, 211, 238, .15), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }
#space { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

/* ================= Scroll progress ================= */
.progress {
  position: fixed; top: 0; inset-inline: 0; height: 3px; z-index: 60;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--pink));
  transform: scaleX(0); transform-origin: right center;
}

/* ================= Page transition curtain ================= */
.curtain {
  position: fixed; inset: 0; z-index: 100; pointer-events: none;
  display: grid; place-items: center;
  background: linear-gradient(135deg, #0a0f2c, #1b1250 55%, #07263a);
  transform: translateY(-100%);
}
.curtain svg { width: 84px; color: var(--cyan); }
.js .curtain { animation: curtainOut .75s var(--curtain) both; }
.js.intro .curtain { animation: none; }
html.is-leaving .curtain { animation: curtainIn .46s var(--curtain) both; }
@keyframes curtainOut { from { transform: translateY(0); } to { transform: translateY(-100%); } }
@keyframes curtainIn { from { transform: translateY(100%); } to { transform: translateY(0); } }

/* ================= Opening screen (home, once per visit) ================= */
.intro-screen { display: none; }
.intro .intro-screen {
  display: grid; place-content: center; justify-items: center; gap: 18px;
  position: fixed; inset: 0; z-index: 200; background: var(--bg);
  transition: transform .8s var(--curtain);
  animation: introFailsafe 0s 5s forwards;
}
.intro-out .intro-screen { transform: translateY(-100%); }
@keyframes introFailsafe { to { visibility: hidden; } }
.intro-logo { width: 110px; color: var(--cyan); }
.intro-logo * { fill: none; stroke: currentColor; stroke-width: 2.5; stroke-dasharray: 1; stroke-dashoffset: 1; animation: draw 1.1s var(--ease) forwards; }
.intro-logo circle { animation-delay: .45s; stroke: var(--violet); }
@keyframes draw { to { stroke-dashoffset: 0; } }
.intro-word { font-size: 1.5rem; font-weight: 800; letter-spacing: 0; opacity: 0; animation: fadeUp .7s .5s var(--ease) forwards; }
.intro-bar { width: 180px; height: 3px; border-radius: 3px; background: var(--line); overflow: hidden; }
.intro-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--violet)); transform: scaleX(0); transform-origin: right; animation: bar 1.6s .2s var(--ease) forwards; }
@keyframes bar { to { transform: scaleX(1); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ================= Navigation ================= */
.nav {
  position: fixed; top: 0; inset-inline: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px clamp(16px, 5vw, 64px);
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, padding .3s;
}
.nav.scrolled { background: rgba(6, 9, 20, .78); backdrop-filter: blur(14px); border-color: var(--line); padding-block: 10px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.15rem; color: var(--cyan); }
.brand svg { width: 34px; height: 34px; }
.brand span { color: var(--text); }
.nav nav { display: flex; align-items: center; gap: 28px; }
.nav nav a { position: relative; color: var(--muted); font-weight: 500; transition: color .2s; }
.nav nav a::after {
  content: ""; position: absolute; inset-inline: 0; bottom: -6px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transform: scaleX(0); transform-origin: right; transition: transform .35s var(--ease);
}
.nav nav a:hover, .nav nav a[aria-current="page"] { color: var(--text); }
.nav nav a:hover::after, .nav nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav nav a.nav-cta { padding: 7px 20px; border-radius: 999px; border: 1px solid rgba(34, 211, 238, .45); color: var(--cyan); }
.nav nav a.nav-cta::after { display: none; }
.nav nav a.nav-cta:hover { background: rgba(34, 211, 238, .12); }
.menu-btn { display: none; background: none; border: 0; width: 44px; height: 44px; cursor: pointer; }
.menu-btn span { display: block; height: 2px; margin: 6px 9px; background: var(--text); border-radius: 2px; transition: transform .3s, opacity .3s; }
.menu-btn[aria-expanded="true"] span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-btn[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ================= Entrance animation (titles) ================= */
.line { display: block; overflow: hidden; padding-block: .14em; margin-block: -.14em; }
.line > span { display: block; }
.js .enter .line > span { transform: translateY(115%); }
.js .enter .fu { opacity: 0; transform: translateY(22px); }
.js.ready .enter .line > span { transform: none; transition: transform 1s var(--ease); transition-delay: calc(var(--i, 0) * 130ms); }
.js.ready .enter .fu { opacity: 1; transform: none; transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: calc(var(--i, 0) * 130ms); }

/* ================= Hero ================= */
.hero {
  display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 24px;
  max-width: var(--max); margin: 0 auto; min-height: 100vh; min-height: 100svh;
  padding: 110px var(--pad) 40px;
}
.badge {
  display: inline-block; padding: 4px 14px; border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, .4); color: var(--cyan);
  font-size: .9rem; margin-bottom: 18px; background: rgba(34, 211, 238, .08);
}
h1 { font-size: clamp(2.2rem, 5.8vw, 4.3rem); line-height: 1.25; font-weight: 800; margin-bottom: 18px; }
.grad { background: linear-gradient(90deg, var(--cyan), var(--violet) 60%, var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p, .page-hero p { color: var(--muted); font-size: 1.15rem; max-width: 34em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer; border: 0; font: inherit;
  padding: 12px 26px; border-radius: 14px; font-weight: 700; color: var(--text);
  transition: transform .25s var(--ease), box-shadow .25s, background .25s;
}
.btn:hover { transform: translateY(-3px); }
.btn.primary { background: linear-gradient(90deg, var(--cyan), var(--violet)); color: #050816; box-shadow: 0 10px 30px rgba(124, 92, 255, .35); }
.btn.primary:hover { box-shadow: 0 16px 40px rgba(124, 92, 255, .5); }
.btn.ghost { border: 1px solid var(--line); background: var(--panel); }
.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(-5px); }

.stage { position: relative; width: min(100%, 540px); aspect-ratio: 1; margin-inline: auto; display: grid; place-items: center; }
.stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; transition: opacity .8s; cursor: grab; touch-action: pan-y; }
.stage.grabbing canvas { cursor: grabbing; }
.stage.is-3d canvas { opacity: 1; }
.stage.is-3d .fallback { display: none; }
.fallback { width: 74%; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, .55)); animation: float 6s ease-in-out infinite; }
.ring { position: absolute; border-radius: 50%; border: 1px solid rgba(34, 211, 238, .28); pointer-events: none; }
.r1 { width: 66%; height: 66%; border-style: dashed; animation: spin 24s linear infinite; }
.r2 { width: 90%; height: 90%; border-color: rgba(124, 92, 255, .26); animation: spin 38s linear infinite reverse; }
.hint {
  position: absolute; bottom: 4%; inset-inline: 0; margin-inline: auto; width: max-content;
  padding: 4px 16px; border-radius: 999px; font-size: .88rem; color: var(--muted);
  background: rgba(6, 9, 20, .6); border: 1px solid var(--line);
  opacity: 0; transition: opacity .6s; pointer-events: none;
}
.stage.is-3d .hint { opacity: 1; }
.stage.touched .hint { opacity: 0; }
@keyframes float { 0%, 100% { translate: 0 0; } 50% { translate: 0 -16px; } }
@keyframes spin { to { rotate: 360deg; } }

.scroll-cue { grid-column: 1 / -1; justify-self: center; width: 26px; height: 42px; border: 2px solid var(--line); border-radius: 14px; position: relative; }
.scroll-cue::after { content: ""; position: absolute; top: 7px; left: 50%; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--cyan); animation: cue 1.8s infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ================= Inner page header ================= */
.page-hero { max-width: var(--max); margin: 0 auto; padding: clamp(130px, 18vw, 190px) var(--pad) 20px; }
.page-hero h1 { font-size: clamp(2.1rem, 5.2vw, 3.8rem); }
.crumb { color: var(--muted); font-size: .95rem; margin-bottom: 14px; }
.crumb a:hover { color: var(--cyan); }

/* ================= Moving text band ================= */
.marquee { overflow: hidden; white-space: nowrap; padding: clamp(28px, 6vw, 60px) 0 0; user-select: none; }
.marquee-inner {
  display: inline-block; font-size: clamp(2.6rem, 9vw, 7rem); font-weight: 800; line-height: 1.5;
  background: linear-gradient(90deg, rgba(34, 211, 238, .22), rgba(124, 92, 255, .22));
  -webkit-background-clip: text; background-clip: text; color: transparent;
  transform: translate3d(var(--x, 0px), 0, 0); will-change: transform;
}

/* ================= Sections ================= */
.block { max-width: 1100px; margin: 0 auto; padding: clamp(56px, 9vw, 104px) var(--pad) 0; }
h2 { font-size: clamp(1.6rem, 3.6vw, 2.5rem); font-weight: 800; margin-bottom: 14px; }
h2::after { content: ""; display: block; width: 64px; height: 4px; margin-top: 10px; border-radius: 4px; background: linear-gradient(90deg, var(--cyan), var(--violet)); }
.lead { color: var(--muted); font-size: 1.1rem; max-width: 46em; margin-bottom: 28px; }

.js .reveal { opacity: 0; transform: translateY(30px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.js .reveal.show { opacity: 1; transform: none; }
.js [data-stagger]:not(.show) > * { opacity: 0; }
.js [data-stagger].show:not(.done) > * { animation: rise .8s var(--ease) backwards; animation-delay: calc(var(--i, 0) * 100ms); }
@keyframes rise { from { opacity: 0; transform: translateY(34px) scale(.97); } }

.stats { max-width: 1100px; margin: 0 auto; padding: clamp(28px, 5vw, 48px) var(--pad) 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stats div { background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 24px 12px; text-align: center; }
.stats b { display: block; direction: ltr; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.2; font-weight: 800; background: linear-gradient(90deg, var(--cyan), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats span { color: var(--muted); }

.cards { display: grid; gap: 18px; margin-top: 24px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.four { grid-template-columns: repeat(4, 1fr); }
.card {
  position: relative; overflow: hidden;
  background: var(--panel); border: 1px solid var(--line); border-radius: 22px; padding: 26px 22px;
  transition: transform .35s var(--ease), border-color .3s;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: radial-gradient(280px circle at var(--mx, 50%) var(--my, 0%), rgba(34, 211, 238, .18), transparent 62%);
  opacity: 0; transition: opacity .35s;
}
.card:hover { transform: translateY(-8px); border-color: rgba(34, 211, 238, .5); }
.card:hover::before { opacity: 1; }
.card > * { position: relative; }
.ico { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; margin-bottom: 14px; color: var(--cyan); background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .25); }
.ico svg, .art svg { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.ico svg { width: 26px; height: 26px; }
.card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.card p { color: var(--muted); }

/* ================= Scroll-driven timeline ================= */
.timeline { position: relative; margin-top: 30px; padding-inline-start: 62px; display: grid; gap: 22px; }
.timeline::before, .timeline-fill { content: ""; position: absolute; inset-inline-start: 22px; top: 6px; bottom: 6px; width: 3px; border-radius: 3px; }
.timeline::before { background: var(--line); }
.timeline-fill { background: linear-gradient(180deg, var(--cyan), var(--violet), var(--pink)); transform: scaleY(var(--p, 0)); transform-origin: top; }
.t-item { position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: 20px; padding: 22px; opacity: .45; transform: translateX(-14px); transition: opacity .5s, transform .6s var(--ease), border-color .5s; }
.t-item::before {
  content: attr(data-n); position: absolute; inset-inline-start: -62px; top: 16px;
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 800; background: var(--bg); border: 2px solid var(--line); color: var(--muted);
  transition: background .5s, color .5s, border-color .5s, box-shadow .5s;
}
.t-item.on { opacity: 1; transform: none; border-color: rgba(124, 92, 255, .45); }
.t-item.on::before { background: linear-gradient(135deg, var(--cyan), var(--violet)); color: #050816; border-color: transparent; box-shadow: 0 0 24px rgba(34, 211, 238, .5); }
.t-item h3 { font-size: 1.18rem; }
.t-item p { color: var(--muted); }
.t-item small { color: var(--cyan); font-weight: 700; direction: ltr; display: inline-block; }

/* ================= Call to action ================= */
.cta {
  max-width: 1100px; margin: clamp(56px, 9vw, 104px) auto 0; width: calc(100% - 2 * var(--pad));
  padding: clamp(32px, 6vw, 60px); border-radius: 30px; text-align: center; position: relative; overflow: hidden;
  background: linear-gradient(135deg, rgba(34, 211, 238, .16), rgba(124, 92, 255, .24));
  border: 1px solid rgba(124, 92, 255, .4);
}
.cta h2::after { margin-inline: auto; }
.cta p { color: var(--muted); max-width: 36em; margin: 0 auto 22px; }
.cta .actions { justify-content: center; margin-top: 0; }

/* ================= Experiences ================= */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.filters button {
  font: inherit; cursor: pointer; color: var(--muted); background: var(--panel);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 22px; font-weight: 500;
  transition: color .25s, background .25s, border-color .25s;
}
.filters button:hover { color: var(--text); }
.filters button.active { color: #050816; font-weight: 700; background: linear-gradient(90deg, var(--cyan), var(--violet)); border-color: transparent; }
.xp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 26px; }
.xp { padding: 0; }
.art { height: 170px; display: grid; place-items: center; position: relative; color: rgba(255, 255, 255, .92); background: linear-gradient(135deg, var(--a), var(--b)); overflow: hidden; }
.art::after { content: ""; position: absolute; inset: 0; background-image: linear-gradient(rgba(255, 255, 255, .12) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .12) 1px, transparent 1px); background-size: 26px 26px; -webkit-mask-image: linear-gradient(transparent 20%, #000); mask-image: linear-gradient(transparent 20%, #000); }
.art svg { width: 74px; height: 74px; stroke-width: 1.3; position: relative; z-index: 1; transition: transform .6s var(--ease); }
.xp:hover .art svg { transform: scale(1.18) rotate(-5deg); }
.xp-body { padding: 20px 22px 24px; }
.tag { display: inline-block; font-size: .82rem; padding: 2px 12px; border-radius: 999px; margin-bottom: 8px; color: var(--cyan); background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .3); }
.note { color: var(--muted); font-size: .95rem; margin-top: 22px; }

/* ================= Contact ================= */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start; }
form.panel, .panel { background: var(--panel); border: 1px solid var(--line); border-radius: 24px; padding: clamp(20px, 4vw, 34px); }
.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-weight: 700; }
.field input, .field textarea, .field select {
  font: inherit; color: var(--text); background: rgba(0, 0, 0, .28);
  border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; width: 100%;
  transition: border-color .25s, box-shadow .25s;
}
.field textarea { min-height: 130px; resize: vertical; }
.field select option { color: #111; }
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 4px rgba(34, 211, 238, .15); }
.form-note { margin-top: 16px; padding: 14px 16px; border-radius: 14px; background: rgba(34, 211, 238, .1); border: 1px solid rgba(34, 211, 238, .35); animation: fadeUp .5s var(--ease); }
details { background: var(--panel); border: 1px solid var(--line); border-radius: 16px; padding: 16px 20px; margin-top: 14px; }
summary { cursor: pointer; font-weight: 700; font-size: 1.08rem; }
summary::marker { color: var(--cyan); }
details p { color: var(--muted); margin-top: 10px; }

/* ================= Footer ================= */
footer { margin-top: clamp(64px, 10vw, 120px); padding: 34px var(--pad); border-top: 1px solid var(--line); background: rgba(0, 0, 0, .28); }
.foot { max-width: 1100px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.foot nav { display: flex; flex-wrap: wrap; gap: 20px; color: var(--muted); }
.foot nav a:hover { color: var(--cyan); }
.muted { color: var(--muted); font-size: .92rem; }

/* ================= Responsive ================= */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 96px; }
  .hero p { margin-inline: auto; }
  .hero .actions { justify-content: center; }
  .stage { order: -1; width: min(78%, 360px); }
  .scroll-cue { display: none; }
  .cards.three, .cards.four, .xp-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .menu-btn { display: block; }
  .nav nav {
    position: fixed; inset: 0; z-index: -1; flex-direction: column; justify-content: center; gap: 26px;
    background: rgba(6, 9, 20, .97); backdrop-filter: blur(10px);
    opacity: 0; visibility: hidden; transition: opacity .35s, visibility .35s;
  }
  .nav nav a { font-size: 1.5rem; font-weight: 700; transform: translateY(18px); opacity: 0; transition: transform .5s var(--ease), opacity .5s; }
  .nav nav.open { opacity: 1; visibility: visible; }
  .nav nav.open a { transform: none; opacity: 1; }
  .nav nav.open a:nth-child(2) { transition-delay: .06s; }
  .nav nav.open a:nth-child(3) { transition-delay: .12s; }
  .nav nav.open a:nth-child(4) { transition-delay: .18s; }
  .cards.three, .cards.four, .xp-grid, .stats { grid-template-columns: 1fr; }
  .timeline { padding-inline-start: 52px; }
  .timeline::before, .timeline-fill { inset-inline-start: 17px; }
  .t-item::before { inset-inline-start: -52px; width: 38px; height: 38px; }
  .foot { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal, .js .enter .fu, .js .enter .line > span, .t-item { opacity: 1; transform: none; }
  .js [data-stagger]:not(.show) > * { opacity: 1; }
  .curtain, .intro-screen { display: none !important; }
}