/* ============================================================
   Mahmoud Safwat — Personal AI & Technology Brand
   Design system: dark premium, AI-focused, RTL/LTR aware
   ============================================================ */

:root {
  --bg: #060a13;
  --bg-soft: #0a101e;
  --card: rgba(148, 163, 184, 0.055);
  --card-strong: rgba(148, 163, 184, 0.09);
  --border: rgba(148, 163, 184, 0.16);
  --border-soft: rgba(148, 163, 184, 0.1);
  --text: #e9eef8;
  --muted: #97a4c0;
  --dim: #6b7a99;
  --cyan: #22d3ee;
  --violet: #8b5cf6;
  --grad: linear-gradient(120deg, #22d3ee 0%, #7dd3fc 40%, #8b5cf6 100%);
  --grad-soft: linear-gradient(120deg, rgba(34, 211, 238, .16), rgba(139, 92, 246, .16));
  --glow: 0 0 42px rgba(34, 211, 238, .16), 0 8px 40px rgba(2, 6, 18, .55);
  --radius: 20px;
  --radius-sm: 12px;
  --font: "Cairo", "Segoe UI", Tahoma, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, monospace;
  --container: 1180px;
  --shadow: 0 18px 50px rgba(2, 6, 18, .45);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  min-height: 100vh;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
ul, ol { list-style: none; padding: 0; }
::selection { background: rgba(34, 211, 238, .28); color: #fff; }

/* ---------- Ambient background ---------- */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(52rem 34rem at 82% -10%, rgba(34, 211, 238, .075), transparent 60%),
    radial-gradient(46rem 30rem at 8% 18%, rgba(139, 92, 246, .08), transparent 60%),
    radial-gradient(40rem 28rem at 50% 115%, rgba(34, 211, 238, .05), transparent 60%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image: radial-gradient(rgba(148, 163, 184, .14) 1px, transparent 1.4px);
  background-size: 34px 34px;
  mask-image: radial-gradient(70rem 44rem at 50% 0%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(70rem 44rem at 50% 0%, #000 0%, transparent 78%);
  opacity: .5;
}

/* ---------- Layout helpers ---------- */
.container { width: min(100% - 3rem, var(--container)); margin-inline: auto; }
.section { padding-block: clamp(4.5rem, 9vw, 7.5rem); position: relative; }
.section.alt {
  background: linear-gradient(180deg, rgba(10, 16, 30, 0) 0%, rgba(10, 16, 30, .75) 14%, rgba(10, 16, 30, .75) 86%, rgba(10, 16, 30, 0) 100%);
}
.mono { font-family: var(--mono); }

/* ---------- Typography ---------- */
.section-head { max-width: 640px; margin-inline: auto; text-align: center; margin-bottom: clamp(2.6rem, 6vw, 4.2rem); }
.eyebrow {
  color: var(--cyan); font-size: .78rem; letter-spacing: .32em; font-weight: 600;
  margin-bottom: .9rem;
}
.section-head h2 {
  font-size: clamp(1.85rem, 4vw, 2.7rem); font-weight: 800; line-height: 1.3;
  letter-spacing: -.01em;
}
.section-head h2::after {
  content: ""; display: block; width: 74px; height: 4px; border-radius: 4px;
  background: var(--grad); margin: 1.05rem auto 0;
}
.section-lead { color: var(--muted); margin-top: 1.15rem; font-size: 1.02rem; }
.subhead { font-size: clamp(1.25rem, 2.4vw, 1.55rem); font-weight: 800; margin: clamp(3rem, 6vw, 4.5rem) 0 1.6rem; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55rem;
  padding: .82rem 1.7rem; border-radius: 999px; font-weight: 700; font-size: .95rem;
  border: 1px solid transparent; transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
  white-space: nowrap;
}
.btn .arrow, .arrow { font-style: normal; transition: transform .25s ease; display: inline-block; }
.btn-primary {
  background: var(--grad); color: #04121c; font-weight: 800;
  box-shadow: 0 8px 26px rgba(34, 211, 238, .28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(34, 211, 238, .4); }
.btn-ghost { border-color: var(--border); background: rgba(148, 163, 184, .04); color: var(--text); }
.btn-ghost:hover { border-color: rgba(34, 211, 238, .55); background: rgba(34, 211, 238, .07); transform: translateY(-2px); }
.btn-sm { padding: .6rem 1.25rem; font-size: .88rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1rem; }
.btn:hover .arrow { transform: translate(2px, -2px); }
[dir="rtl"] .btn:hover .arrow { transform: translate(-2px, -2px); }
.btn-ico { width: 20px; height: 20px; }

/* ---------- Badges & chips ---------- */
.badge {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .72rem; font-weight: 700; padding: .28rem .8rem; border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, .35); color: var(--cyan); background: rgba(34, 211, 238, .07);
}
.badge-hot {
  border-color: rgba(139, 92, 246, .5); color: #c4b5fd; background: rgba(139, 92, 246, .1);
}

/* ---------- Focus / a11y ---------- */
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }
.skip-link {
  position: fixed; inset-block-start: -100px; inset-inline-start: 1rem; z-index: 200;
  background: var(--cyan); color: #04121c; padding: .6rem 1.2rem; border-radius: 0 0 10px 10px;
  font-weight: 800; transition: inset-block-start .25s ease;
}
.skip-link:focus { inset-block-start: 0; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2, .7, .2, 1), transform .7s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Navbar ---------- */
.navbar {
  position: fixed; inset-inline: 0; inset-block-start: 0; z-index: 100;
  padding-block: .9rem; transition: padding .3s ease, background .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  padding-block: .55rem;
  background: rgba(6, 10, 19, .78);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border-soft);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; font-weight: 800; }
.brand-avatar {
  width: 40px; height: 40px; border-radius: 50%; object-fit: cover; flex: none;
  border: 2px solid rgba(34, 211, 238, .5);
  box-shadow: 0 4px 16px rgba(34, 211, 238, .3);
}
.brand-name { font-size: 1.05rem; }
.nav-links { display: flex; align-items: center; gap: .35rem; }
.nav-links a {
  padding: .5rem .85rem; border-radius: 999px; font-size: .92rem; font-weight: 600; color: var(--muted);
  transition: color .2s ease, background .2s ease;
}
.nav-links a:hover { color: var(--text); background: rgba(148, 163, 184, .08); }
.nav-links a.active { color: var(--cyan); background: rgba(34, 211, 238, .08); }
.nav-links .nav-cta {
  border: 1px solid rgba(34, 211, 238, .4); color: var(--cyan); margin-inline-start: .4rem;
}
.nav-links .nav-cta:hover { background: rgba(34, 211, 238, .12); }
.nav-tools { display: flex; align-items: center; gap: .9rem; }
.lang-switch {
  display: inline-flex; align-items: center; gap: .35rem;
  border: 1px solid var(--border); border-radius: 999px; padding: .28rem .6rem;
  background: rgba(148, 163, 184, .05);
}
.lang-btn { font-size: .85rem; font-weight: 700; color: var(--dim); padding: .15rem .45rem; border-radius: 999px; transition: color .2s ease, background .2s ease; }
.lang-btn.active { color: var(--cyan); background: rgba(34, 211, 238, .12); }
.lang-sep { color: var(--dim); font-size: .8rem; }
.nav-burger { display: none; flex-direction: column; gap: 5px; padding: .55rem; border: 1px solid var(--border); border-radius: 10px; }
.nav-burger span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .3s ease, opacity .3s ease; }
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(7.5rem, 14vh, 10.5rem) clamp(2rem, 5vw, 4rem); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: -1; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; }
.orb-1 { width: 480px; height: 480px; inset-block-start: -160px; inset-inline-end: -120px; background: radial-gradient(circle, rgba(34, 211, 238, .34), transparent 70%); animation: drift 16s ease-in-out infinite alternate; }
.orb-2 { width: 420px; height: 420px; inset-block-end: -180px; inset-inline-start: -140px; background: radial-gradient(circle, rgba(139, 92, 246, .3), transparent 70%); animation: drift 20s ease-in-out infinite alternate-reverse; }
@keyframes drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-46px, 34px) scale(1.12); }
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(148, 163, 184, .05) 1px, transparent 1px), linear-gradient(90deg, rgba(148, 163, 184, .05) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(46rem 30rem at 60% 20%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(46rem 30rem at 60% 20%, #000, transparent 75%);
}
.hero-inner {
  display: grid; grid-template-columns: 1.08fr .92fr; align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: .6rem;
  color: var(--cyan); font-weight: 700; font-size: .9rem;
  border: 1px solid rgba(34, 211, 238, .3); background: rgba(34, 211, 238, .06);
  padding: .45rem 1.1rem; border-radius: 999px; margin-bottom: 1.5rem;
}
.pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 0 0 rgba(34, 211, 238, .55); animation: pulse 2.2s ease-out infinite; }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(34, 211, 238, .5); }
  70% { box-shadow: 0 0 0 11px rgba(34, 211, 238, 0); }
  100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0); }
}
.hero-title {
  font-size: clamp(2.7rem, 7vw, 4.6rem); font-weight: 900; line-height: 1.15; letter-spacing: -.015em;
  background: linear-gradient(180deg, #ffffff 30%, #aebcd9 100%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-role { margin-top: 1rem; font-size: clamp(1.15rem, 2.6vw, 1.55rem); font-weight: 700; min-height: 2.4em; display: flex; align-items: center; }
.role-text { color: var(--cyan); }
.role-caret { width: 3px; height: 1.25em; background: var(--cyan); margin-inline-start: 6px; border-radius: 2px; animation: blink 1.05s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-lead { margin-top: 1.1rem; color: var(--muted); font-size: clamp(1rem, 1.6vw, 1.12rem); max-width: 34rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); justify-content: start; gap: clamp(1.2rem, 3.4vw, 2.6rem); margin-top: 2.8rem; }
.hero-stats li { display: grid; gap: .1rem; }
.hero-stats strong {
  font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 900; font-family: var(--mono);
  background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-stats span { font-size: .8rem; color: var(--dim); font-weight: 600; }

/* Hero entrance */
.fade-item { opacity: 0; transform: translateY(20px); animation: fadeUp .8s cubic-bezier(.2, .7, .2, 1) forwards; }
.fade-item:nth-child(1) { animation-delay: .05s; }
.fade-item:nth-child(2) { animation-delay: .15s; }
.fade-item:nth-child(3) { animation-delay: .25s; }
.fade-item:nth-child(4) { animation-delay: .35s; }
.fade-item:nth-child(5) { animation-delay: .45s; }
.fade-item:nth-child(6) { animation-delay: .55s; }
@keyframes fadeUp { to { opacity: 1; transform: none; } }

/* Hero visual — portrait + flagship bar */
.hero-visual { position: relative; perspective: 1100px; }
.hero-portrait {
  position: relative; max-width: 450px; margin-inline: auto;
  border-radius: 26px; overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--glow), var(--shadow);
  transform-style: preserve-3d; will-change: transform;
  transition: box-shadow .3s ease;
}
.hero-portrait:hover { box-shadow: 0 0 60px rgba(34, 211, 238, .22), 0 18px 60px rgba(2, 6, 18, .6); }
.hero-portrait img { width: 100%; height: auto; display: block; }
.portrait-caption {
  position: absolute; inset-inline: 0; inset-block-end: 0;
  display: grid; gap: .15rem; justify-items: center; text-align: center;
  padding: 3rem 1rem 1.1rem;
  background: linear-gradient(180deg, transparent, rgba(4, 8, 16, .92));
}
.portrait-caption strong { color: #fff; font-size: 1.05rem; font-weight: 800; }
.portrait-caption .mono { color: var(--cyan); font-size: .68rem; letter-spacing: .2em; font-weight: 600; }

.hero-flagship {
  display: flex; align-items: center; gap: .8rem;
  max-width: 450px; margin: 1.1rem auto 0;
  padding: .75rem 1.05rem;
  background: linear-gradient(160deg, rgba(16, 24, 44, .92), rgba(9, 14, 27, .94));
  border: 1px solid var(--border); border-radius: 16px;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.hero-flagship:hover {
  border-color: rgba(34, 211, 238, .5); transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(2, 6, 18, .5), 0 0 24px rgba(34, 211, 238, .12);
}
.hero-flagship img { flex: none; }
.flag-text { display: grid; line-height: 1.45; flex: 1; min-width: 0; }
.flag-text strong { font-size: .97rem; font-weight: 800; }
.flag-text span:not(.badge) { font-size: .74rem; color: var(--muted); }
.hero-flagship .badge { flex: none; }
.hero-flagship .arrow { color: var(--cyan); font-style: normal; }
.float-chip {
  position: absolute; z-index: 2;
  font-size: .74rem; font-weight: 600; color: #bfe9f5;
  background: rgba(10, 17, 32, .85); border: 1px solid rgba(34, 211, 238, .35);
  padding: .4rem .85rem; border-radius: 999px;
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 8px 26px rgba(2, 6, 18, .5);
  animation: floaty 6.5s ease-in-out infinite alternate;
}
.chip-1 { inset-block-start: -16px; inset-inline-start: -14px; }
.chip-2 { inset-block-start: 26%; inset-inline-end: -20px; animation-delay: 1.2s; }
.chip-3 { inset-block-start: 58%; inset-inline-start: -26px; animation-delay: 2.1s; }
.chip-4 { inset-block-start: 12%; inset-inline-end: 8%; animation-delay: 3s; }
@keyframes floaty { from { transform: translateY(-7px); } to { transform: translateY(7px); } }

/* ---------- Photo gallery marquee ---------- */
.gallery-strip { margin-top: clamp(2.8rem, 6vw, 4.5rem); }
.gallery-head { display: flex; align-items: center; justify-content: center; gap: .8rem; margin-bottom: 1.3rem; }
.gallery-title {
  color: var(--muted); font-weight: 700; font-size: .92rem; letter-spacing: .02em;
}
.gallery-toggle {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: rgba(148, 163, 184, .06); color: var(--muted);
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.gallery-toggle:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .45); background: rgba(34, 211, 238, .08); }
.gallery-toggle svg { width: 15px; height: 15px; }
.gallery-toggle .ico-play { display: none; }
.gallery-toggle[aria-pressed="true"] .ico-pause { display: none; }
.gallery-toggle[aria-pressed="true"] .ico-play { display: block; }
.gallery-track {
  display: flex; gap: 1.1rem; width: max-content;
  animation: gallery-marquee-ltr 46s linear infinite;
  cursor: pointer;
}
.gallery-track.paused { animation-play-state: paused; }
.gallery-strip .strip-mask { display: flex; justify-content: flex-end; }
@keyframes gallery-marquee-ltr { to { transform: translateX(calc(50% + .55rem)); } }
[dir="rtl"] .gallery-track { animation-name: gallery-marquee-rtl; }
@keyframes gallery-marquee-rtl { to { transform: translateX(calc(-50% - .55rem)); } }
.gallery-item {
  position: relative; flex: none; width: clamp(150px, 19vw, 225px); aspect-ratio: 3 / 4;
  border-radius: 18px; overflow: hidden; border: 1px solid var(--border);
  box-shadow: var(--shadow); background: var(--bg-soft);
}
.gallery-item::after {
  content: ""; position: absolute; inset: 0; border-radius: 17px; pointer-events: none;
  background: linear-gradient(180deg, transparent 62%, rgba(5, 9, 18, .55));
  opacity: .8; transition: opacity .35s ease;
}
.gallery-item img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .55s cubic-bezier(.2, .7, .2, 1);
}
.gallery-item:hover { border-color: rgba(34, 211, 238, .45); }
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item:hover::after { opacity: .35; }

/* ---------- Lightbox ---------- */
.lightbox[hidden] { display: none; }
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: center; justify-content: center; gap: clamp(.6rem, 2vw, 1.5rem);
  background: rgba(3, 6, 12, .88);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  padding: clamp(.8rem, 3vw, 2.5rem);
  opacity: 0; transition: opacity .28s ease;
}
.lightbox.open { opacity: 1; }
.lb-body {
  margin: 0; max-width: min(88vw, 1000px); max-height: 86vh;
  display: grid; place-items: center;
}
.lb-body img {
  max-width: 100%; max-height: 86vh; width: auto; height: auto;
  border-radius: 16px; border: 1px solid var(--border);
  box-shadow: 0 30px 90px rgba(0, 0, 0, .6);
}
.lb-close, .lb-nav {
  position: absolute; display: grid; place-items: center;
  width: 46px; height: 46px; border-radius: 50%;
  background: rgba(148, 163, 184, .1); border: 1px solid var(--border); color: var(--text);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: color .2s ease, border-color .2s ease, background .2s ease, transform .2s ease;
}
.lb-close:hover, .lb-nav:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .5); background: rgba(34, 211, 238, .1); }
.lb-close svg, .lb-nav svg { width: 20px; height: 20px; }
.lb-close { inset-block-start: 1.2rem; inset-inline-end: 1.2rem; }
.lb-nav { inset-block-start: 50%; transform: translateY(-50%); }
.lb-nav:hover { transform: translateY(-50%) scale(1.06); }
.lb-prev { inset-inline-start: clamp(.6rem, 2vw, 1.6rem); }
.lb-next { inset-inline-end: clamp(.6rem, 2vw, 1.6rem); }

/* ---------- In-photos wall ---------- */
.photo-wall { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.15rem; }
.wall-item {
  margin: 0; position: relative; overflow: hidden;
  border-radius: 18px; border: 1px solid var(--border-soft); background: var(--card);
  box-shadow: var(--shadow); cursor: zoom-in;
  transition: transform .3s ease, border-color .3s ease;
}
.wall-item:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .4); }
.wall-item img {
  width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; display: block;
  transition: transform .55s cubic-bezier(.2, .7, .2, 1);
}
.wall-item:hover img { transform: scale(1.045); }
.wall-item figcaption {
  position: absolute; inset-inline: 0; inset-block-end: 0;
  padding: 2.2rem 1rem .9rem; color: #dfe7f5; font-size: .82rem; font-weight: 600; line-height: 1.6;
  background: linear-gradient(180deg, transparent, rgba(4, 8, 16, .92));
}
.wall-item:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; }

/* ---------- Media strip ---------- */
.media-strip { margin-top: clamp(3rem, 7vw, 5rem); border-block: 1px solid var(--border-soft); padding-block: 1.15rem; position: relative; }
.strip-mask {
  overflow: hidden; position: relative;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.strip-track { display: flex; gap: 3rem; width: max-content; animation: marquee 34s linear infinite; }
.strip-track:hover { animation-play-state: paused; }
.strip-item {
  display: inline-flex; align-items: center; gap: .6rem; white-space: nowrap;
  color: var(--dim); font-weight: 700; font-size: .92rem;
}
.strip-item::before { content: "✦"; color: var(--cyan); font-size: .7rem; }
@keyframes marquee { to { transform: translateX(calc(-50% - 1.5rem)); } }
[dir="rtl"] .strip-track { animation-name: marquee-rtl; }
@keyframes marquee-rtl { to { transform: translateX(calc(50% + 1.5rem)); } }

/* ---------- Projects ---------- */
.project-card {
  position: relative; display: flex; flex-direction: column;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.project-card:hover { transform: translateY(-6px); border-color: rgba(34, 211, 238, .4); box-shadow: 0 22px 60px rgba(2, 6, 18, .55), 0 0 40px rgba(34, 211, 238, .08); }
.project-media { position: relative; display: block; overflow: hidden; }
.project-media img { width: 100%; height: auto; transition: transform .6s cubic-bezier(.2, .7, .2, 1); }
.project-card:hover .project-media img { transform: scale(1.045); }
.media-overlay {
  position: absolute; inset: 0; display: grid; place-items: center; gap: .4rem;
  background: rgba(5, 9, 18, .55); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
  color: #fff; font-weight: 800; font-size: 1rem;
  opacity: 0; transition: opacity .35s ease;
}
.media-overlay .arrow { font-size: 1.3rem; }
.project-media:hover .media-overlay, .project-media:focus-visible .media-overlay { opacity: 1; }
.project-body { display: flex; flex-direction: column; gap: .95rem; padding: 1.5rem 1.6rem 1.7rem; flex: 1; }
.project-head { display: flex; align-items: center; gap: .9rem; }
.project-head img { border-radius: 10px; }
.project-head h3 { font-size: 1.22rem; font-weight: 800; line-height: 1.35; }
.project-head .badge { margin-top: .3rem; }
.mini-icon {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 12px; flex: none;
  background: var(--grad-soft); border: 1px solid var(--border); color: var(--cyan);
}
.project-desc { color: var(--muted); font-size: .95rem; }
.project-points { display: grid; gap: .45rem; }
.project-points li {
  position: relative; padding-inline-start: 1.35rem; color: var(--muted); font-size: .9rem;
}
.project-points li::before {
  content: ""; position: absolute; inset-inline-start: 0; inset-block-start: .58em;
  width: 7px; height: 7px; border-radius: 2px; background: var(--grad); transform: rotate(45deg);
}
.project-tags, .project-mini { font-size: .74rem; color: var(--dim); letter-spacing: .04em; }
.project-actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: auto; padding-top: .5rem; }

/* Flagship */
.project-card.flagship {
  display: grid; grid-template-columns: 1.15fr 1fr; align-items: stretch;
  margin-bottom: 1.6rem;
  border-color: rgba(34, 211, 238, .28);
  background: linear-gradient(140deg, rgba(34, 211, 238, .05), rgba(139, 92, 246, .05) 55%, var(--card));
}
.project-card.flagship::before {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius); pointer-events: none;
  background: linear-gradient(120deg, rgba(34, 211, 238, .12), transparent 40%, transparent 60%, rgba(139, 92, 246, .12));
  mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  mask-composite: exclude; -webkit-mask-composite: xor;
  padding: 1px;
}
.project-card.flagship:hover { transform: translateY(-6px); border-color: rgba(34, 211, 238, .55); }
.project-card.flagship .project-media { height: 100%; background: linear-gradient(160deg, rgba(13, 21, 38, .8), rgba(9, 14, 27, .9)); }
.project-card.flagship .project-media img { height: 100%; object-fit: contain; padding: clamp(.6rem, 1.5vw, 1.2rem); }
.project-card.flagship .project-body { padding: clamp(1.6rem, 3vw, 2.4rem); gap: 1.1rem; }
.project-card.flagship h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
.project-card.flagship .project-desc { font-size: 1rem; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }

/* Course card art (removed — replaced with real Udemy preview) */

/* Mini tools grid */
.mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.mini-card {
  display: grid; gap: .5rem; align-content: start;
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius-sm);
  padding: 1.35rem 1.3rem; transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.mini-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .35); background: var(--card-strong); }
.mini-ico { width: 38px; height: 38px; color: var(--cyan); }
.mini-card h4 { font-size: 1rem; font-weight: 800; }
.mini-card p { color: var(--muted); font-size: .86rem; }
.mini-tag { font-size: .68rem; color: var(--dim); letter-spacing: .06em; }
.mini-card.wide {
  grid-column: 1 / -1;
  grid-template-columns: auto 1fr;
  grid-template-areas: "ico title" "ico desc" "ico tag";
  column-gap: 1.1rem; row-gap: .3rem; align-items: center;
}
.mini-card.wide .mini-ico { grid-area: ico; width: 44px; height: 44px; }
.mini-card.wide h4 { grid-area: title; }
.mini-card.wide p { grid-area: desc; max-width: 62rem; }
.mini-card.wide .mini-tag { grid-area: tag; }

/* Site links */
.site-links { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: .9rem; }
.site-link {
  display: flex; align-items: center; gap: .8rem;
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius-sm);
  padding: 1rem 1.2rem; transition: border-color .25s ease, transform .25s ease, background .25s ease;
}
.site-link:hover { border-color: rgba(34, 211, 238, .4); transform: translateY(-3px); background: var(--card-strong); }
.site-link strong { font-family: var(--mono); font-size: .92rem; color: var(--cyan); white-space: nowrap; }
.site-link span { color: var(--muted); font-size: .82rem; flex: 1; }
.site-link .arrow { color: var(--dim); }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.3rem; }
.about-card {
  position: relative; display: grid; gap: .8rem; align-content: start;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.9rem 1.7rem; overflow: hidden;
  transition: transform .3s ease, border-color .3s ease;
}
.about-card::before {
  content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .3s ease;
}
.about-card:hover { transform: translateY(-5px); border-color: rgba(34, 211, 238, .35); }
.about-card:hover::before { opacity: 1; }
.about-num { font-size: .8rem; color: var(--cyan); letter-spacing: .2em; }
.about-card h3 { font-size: 1.2rem; font-weight: 800; }
.about-card p { color: var(--muted); font-size: .93rem; }
.about-facts {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem;
  margin-top: 1.6rem;
}
.fact {
  display: grid; gap: .3rem; text-align: center; align-content: center;
  border: 1px dashed var(--border); border-radius: var(--radius-sm);
  padding: 1.2rem 1rem; background: rgba(148, 163, 184, .03);
}
.fact strong { color: var(--cyan); font-size: 1.05rem; font-weight: 900; }
.fact span { color: var(--muted); font-size: .82rem; }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 760px; margin-inline: auto; display: grid; gap: 1.6rem; padding-inline-start: 2.2rem; }
.timeline::before {
  content: ""; position: absolute; inset-block: 8px; inset-inline-start: 8px; width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet)); opacity: .4; border-radius: 2px;
}
.t-item { position: relative; }
.t-dot {
  position: absolute; inset-block-start: 1.55rem; inset-inline-start: -2.2rem; margin-inline-start: 3px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--grad); box-shadow: 0 0 0 5px rgba(34, 211, 238, .12), 0 0 16px rgba(34, 211, 238, .5);
}
.t-card {
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.5rem 1.7rem; display: grid; gap: .45rem;
  transition: border-color .3s ease, transform .3s ease;
}
.t-card:hover { border-color: rgba(34, 211, 238, .35); transform: translateX(0) translateY(-3px); }
.t-when {
  justify-self: start; font-size: .72rem; font-weight: 700; color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, .3); border-radius: 999px; padding: .15rem .75rem;
  background: rgba(34, 211, 238, .06);
}
.t-card h3 { font-size: 1.12rem; font-weight: 800; }
.t-role { color: var(--cyan); font-weight: 700; font-size: .92rem; }
.t-desc { color: var(--muted); font-size: .92rem; }

/* ---------- Achievements ---------- */
.ach-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.15rem; }
.ach-card {
  display: grid; gap: .6rem; align-content: start;
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.6rem 1.5rem; position: relative; overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, background .3s ease;
}
.ach-card::after {
  content: ""; position: absolute; inset-block-start: -40px; inset-inline-end: -40px;
  width: 120px; height: 120px; border-radius: 50%;
  background: radial-gradient(circle, rgba(34, 211, 238, .14), transparent 70%);
  opacity: 0; transition: opacity .35s ease;
}
.ach-card:hover { transform: translateY(-5px); border-color: rgba(139, 92, 246, .45); background: var(--card-strong); }
.ach-card:hover::after { opacity: 1; }
.ach-ico { width: 40px; height: 40px; color: var(--cyan); }
.ach-card h3 { font-size: 1.02rem; font-weight: 800; line-height: 1.5; }
.ach-card p { color: var(--muted); font-size: .87rem; }

/* ---------- Speaking ---------- */
.speak-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.15rem; }
.speak-card {
  position: relative; display: grid; gap: .7rem; align-content: start;
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.7rem 1.5rem; transition: transform .3s ease, border-color .3s ease;
}
.speak-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .35); }
.speak-tag {
  justify-self: start; font-size: .7rem; font-weight: 800; letter-spacing: .08em;
  color: #c4b5fd; border: 1px solid rgba(139, 92, 246, .4); border-radius: 999px;
  padding: .18rem .8rem; background: rgba(139, 92, 246, .1);
}
.speak-card h3 { font-size: 1.05rem; font-weight: 800; }
.speak-card p { color: var(--muted); font-size: .9rem; }

/* ---------- Skills ---------- */
.skill-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1.15rem; }
.skill-card {
  grid-column: span 2;
  background: var(--card); border: 1px solid var(--border-soft); border-radius: var(--radius);
  padding: 1.7rem 1.6rem; display: grid; gap: 1.1rem; align-content: start;
  transition: transform .3s ease, border-color .3s ease;
}
.skill-card:nth-child(4), .skill-card:nth-child(5) { grid-column: span 3; }
.skill-card:hover { transform: translateY(-4px); border-color: rgba(34, 211, 238, .35); }
.skill-card h3 { display: flex; align-items: center; gap: .7rem; font-size: 1.08rem; font-weight: 800; }
.skill-ico { font-size: 1.3rem; }
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chips li {
  font-size: .78rem; font-weight: 600; color: var(--muted);
  background: rgba(148, 163, 184, .07); border: 1px solid var(--border-soft);
  padding: .3rem .8rem; border-radius: 999px;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}
.chips li:hover { color: var(--cyan); border-color: rgba(34, 211, 238, .4); background: rgba(34, 211, 238, .06); }

/* ---------- Services ---------- */
.serv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.2rem; }
.serv-card {
  position: relative; display: grid; gap: .65rem; align-content: start;
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.9rem 1.8rem; overflow: hidden;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.serv-card:hover { transform: translateY(-5px); border-color: rgba(34, 211, 238, .4); box-shadow: 0 18px 46px rgba(2, 6, 18, .45); }
.serv-num {
  position: absolute; inset-block-start: 1rem; inset-inline-end: 1.3rem;
  font-size: 2rem; font-weight: 600; color: rgba(148, 163, 184, .13);
}
.serv-card h3 { font-size: 1.15rem; font-weight: 800; }
.serv-card p { color: var(--muted); font-size: .93rem; }
.serv-cta {
  margin-top: 2.4rem; text-align: center; display: grid; justify-items: center; gap: 1.1rem;
  border: 1px dashed rgba(34, 211, 238, .3); border-radius: var(--radius);
  padding: 2.2rem 1.5rem; background: rgba(34, 211, 238, .03);
}
.serv-cta p { font-size: 1.1rem; font-weight: 700; }

/* ---------- Contact ---------- */
.contact { position: relative; overflow: hidden; }
.contact-inner { position: relative; text-align: center; }
.contact .section-head { margin-inline: auto; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border-soft); padding-block: 2.4rem; background: rgba(6, 10, 19, .7); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; }
.footer-brand { display: flex; align-items: center; gap: .8rem; }
.footer-brand strong { display: block; font-size: .98rem; }
.footer-brand p { font-size: .72rem; color: var(--dim); letter-spacing: .12em; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-links a { color: var(--muted); font-size: .86rem; font-weight: 600; transition: color .2s ease; }
.footer-links a:hover { color: var(--cyan); }
.footer-copy { width: 100%; text-align: center; color: var(--dim); font-size: .8rem; margin-top: .4rem; }

/* ---------- To top ---------- */
.to-top {
  position: fixed; inset-block-end: 1.4rem; inset-inline-end: 1.4rem; z-index: 90;
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  background: rgba(10, 17, 32, .9); border: 1px solid var(--border); color: var(--cyan);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 10px 30px rgba(2, 6, 18, .5);
  opacity: 0; transform: translateY(12px); transition: opacity .3s ease, transform .3s ease;
}
.to-top.show { opacity: 1; transform: none; }
.to-top svg { width: 20px; height: 20px; }
.to-top:hover { border-color: rgba(34, 211, 238, .5); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1060px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 560px; margin-inline: auto; width: 100%; }
  .hero-lead { max-width: 42rem; }
  .project-grid, .speak-grid, .mini-grid { grid-template-columns: repeat(2, 1fr); }
  .skill-grid { grid-template-columns: repeat(2, 1fr); }
  .skill-card, .skill-card:nth-child(4), .skill-card:nth-child(5) { grid-column: span 1; }
  .about-grid { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: 1fr 1fr; }
  .serv-grid { grid-template-columns: 1fr; }
  .photo-wall { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .photo-wall { grid-template-columns: 1fr; }
  .lb-nav { width: 40px; height: 40px; }
}
@media (max-width: 900px) {
  .nav-links {
    position: fixed; inset-block-start: 0; inset-inline-end: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: .4rem;
    background: rgba(7, 11, 20, .97); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    width: min(78vw, 320px); height: 100dvh; padding: 6rem 1.6rem 2rem;
    border-inline-start: 1px solid var(--border);
    transform: translateX(105%); transition: transform .35s cubic-bezier(.2, .7, .2, 1);
  }
  [dir="rtl"] .nav-links { transform: translateX(-105%); }
  .nav-links.open { transform: none; }
  .nav-links a { padding: .85rem 1rem; font-size: 1rem; }
  .nav-links .nav-cta { margin-inline-start: 0; text-align: center; justify-content: center; }
  .nav-burger { display: inline-flex; z-index: 101; }
}
@media (max-width: 720px) {
  .container { width: min(100% - 2rem, var(--container)); }
  .hero { padding-block-start: 6.5rem; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); justify-content: stretch; gap: 1.2rem; }
  .hero-stats li { justify-items: center; text-align: center; }
  .project-grid, .mini-grid, .speak-grid { grid-template-columns: 1fr; }
  .skill-grid { grid-template-columns: 1fr; }
  .project-card.flagship { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: 1fr; }
  .footer-inner { justify-content: center; text-align: center; }
  .float-chip { display: none; }
  .brand-name { display: none; }
}
@media (max-width: 420px) {
  .hero-title { font-size: 2.5rem; }
  .hero-actions .btn { width: 100%; }
  .contact-actions .btn { width: 100%; }
}

/* ============================================================
   English (LTR) fine-tuning
   ============================================================ */
html[lang="en"] body { font-family: "Cairo", "Segoe UI", sans-serif; letter-spacing: -.005em; }
html[lang="en"] .hero-role { min-height: 2.1em; }

/* ============================================================
   Reduced motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
  .fade-item { opacity: 1; transform: none; animation: none; }
  .strip-track { animation: none; flex-wrap: wrap; width: 100%; justify-content: center; }
  .gallery-track { animation: none; flex-wrap: wrap; width: 100%; justify-content: center; }
  .role-caret { animation: none; }
}