/* =========================================================
   Omar Shady — Portfolio
   Theme: connectivity / signal — inspired by spacedesk.net's
   dark, animated device-to-device connection diagram
   ========================================================= */

:root, [data-theme="dark"]{
  --bg: #06070d;
  --surface: #0d1220;
  --surface-2: #121a2e;
  --text: #f3efe2;
  --text-dim: #b7b3a6;
  --gold: #e3b04b;
  --gold-soft: #f2cf85;
  --teal: #2fc4c9;
  --hairline: rgba(243, 239, 226, 0.09);
  --hairline-strong: rgba(243, 239, 226, 0.16);

  --vign-1: rgba(47,196,201,.16);
  --vign-2: rgba(227,176,75,.10);
  --vign-3: rgba(0,0,0,.55);

  --btn-ink: #201404;
}

[data-theme="light"]{
  --bg: #f7f6f1;
  --surface: #ffffff;
  --surface-2: #efece2;
  --text: #17181c;
  --text-dim: #57594f;
  --gold: #b3761c;
  --gold-soft: #d99a2f;
  --teal: #0f8f89;
  --hairline: rgba(20, 20, 15, 0.08);
  --hairline-strong: rgba(20, 20, 15, 0.15);

  --vign-1: rgba(15,143,137,.07);
  --vign-2: rgba(179,118,28,.06);
  --vign-3: rgba(120,110,90,.08);

  --btn-ink: #fffdf7;
}

:root, [data-lang="en"]{
  --font-display: "Space Grotesk", sans-serif;
  --font-accent: "JetBrains Mono", monospace;
}
[data-lang="ar"]{
  --font-display: "Reem Kufi", "Cairo", sans-serif;
  --font-accent: "Cairo", sans-serif;
}

*, *::before, *::after{ box-sizing: border-box; }

html{
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Cairo", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .35s ease, color .35s ease;
}

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 .5em;
}

p{ margin: 0 0 1em; color: var(--text-dim); }

a{ color: inherit; text-decoration: none; }

img, svg{ display: block; max-width: 100%; }

.container{
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 48px);
}

.skip-link{
  position: absolute;
  inset-inline-start: 12px;
  top: -60px;
  background: var(--gold);
  color: var(--btn-ink);
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 700;
  z-index: 999;
  transition: top .2s ease;
}
.skip-link:focus{ top: 12px; }

:focus-visible{
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* =========================================================
   Connectivity background (canvas mesh + ambient vignette)
   ========================================================= */

#meshCanvas{
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  background: var(--bg);
}

.ambient-glow{
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 45% at 82% 8%, var(--vign-1), transparent 60%),
    radial-gradient(50% 40% at 12% 85%, var(--vign-2), transparent 60%),
    radial-gradient(120% 90% at 50% 50%, transparent 55%, var(--vign-3) 100%);
}

/* =========================================================
   Reveal-on-scroll
   ========================================================= */

.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s cubic-bezier(.22,.61,.36,1), transform .8s cubic-bezier(.22,.61,.36,1);
  transition-delay: calc(var(--delay, 0) * 1ms);
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

.reduced-motion .reveal{ transition: opacity .3s ease; transform: none; }
html.reduced-motion{ scroll-behavior: auto; }

/* =========================================================
   Buttons & chips
   ========================================================= */

.eyebrow{
  font-family: var(--font-accent);
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--gold);
  margin-bottom: .9em;
  display: inline-flex;
  align-items: center;
  gap: .5em;
}
.eyebrow::before{
  content: "";
  width: 22px;
  height: 1px;
  background: var(--gold);
  display: inline-block;
}

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: .95em 1.9em;
  border-radius: 999px;
  font-weight: 700;
  font-size: .98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}
.btn--primary{
  background: linear-gradient(95deg, var(--gold), var(--gold-soft));
  color: var(--btn-ink);
  box-shadow: 0 8px 30px -8px rgba(227,176,75,.45);
}
.btn--primary:hover{ transform: translateY(-2px); box-shadow: 0 14px 36px -10px rgba(227,176,75,.6); }
.btn--ghost{
  background: rgba(128,128,128,.05);
  border-color: var(--hairline-strong);
  color: var(--text);
}
.btn--ghost:hover{ border-color: var(--gold); color: var(--gold-soft); transform: translateY(-2px); }
.btn--wide{ width: 100%; }

.chips{ display: flex; flex-wrap: wrap; gap: .6em; margin-bottom: 1.6em; }
.chip{
  font-family: "JetBrains Mono", monospace;
  font-size: .82rem;
  padding: .55em 1.1em;
  border-radius: 999px;
  border: 1px solid var(--hairline-strong);
  background: rgba(128,128,128,.04);
  color: var(--text);
  transition: border-color .25s ease, transform .25s ease, box-shadow .25s ease;
}
.chip:hover{ border-color: var(--teal); transform: translateY(-2px); box-shadow: 0 8px 20px -10px rgba(47,196,201,.5); }
.chip--accent{ border-color: rgba(227,176,75,.35); }
.chip--accent:hover{ border-color: var(--gold); box-shadow: 0 8px 20px -10px rgba(227,176,75,.5); }

/* =========================================================
   Nav
   ========================================================= */

.nav{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 65%, transparent);
  border-bottom: 1px solid var(--hairline);
}
.nav__inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 14px;
}
.nav__brand{
  display: flex;
  align-items: center;
  gap: .6em;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  white-space: nowrap;
}
.nav__mark{ width: 28px; height: 28px; flex-shrink: 0; }

.nav__utility{
  display: flex;
  align-items: center;
  gap: 8px;
  order: 3;
}
.icon-btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--hairline-strong);
  background: rgba(128,128,128,.04);
  color: var(--text);
  cursor: pointer;
  transition: border-color .25s ease, transform .25s ease;
}
.icon-btn:hover{ border-color: var(--gold); transform: translateY(-1px); }
.icon-btn svg{ width: 18px; height: 18px; }

.theme-toggle .icon-moon{ display: none; }
[data-theme="light"] .theme-toggle .icon-sun{ display: none; }
[data-theme="light"] .theme-toggle .icon-moon{ display: block; }

.lang-toggle{
  width: auto;
  padding-inline: 14px;
  border-radius: 999px;
  font-family: var(--font-accent);
  font-size: .8rem;
  font-weight: 600;
}

.nav__toggle{
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 60;
  order: 4;
}
.nav__toggle span{
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s ease, opacity .3s ease;
}
.nav__toggle[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.nav__links{
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 30px);
  order: 2;
}
.nav__link{
  position: relative;
  font-size: .95rem;
  color: var(--text-dim);
  padding: .3em 0;
  transition: color .25s ease;
}
.nav__link::after{
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -4px;
  height: 1.5px;
  background: var(--gold);
  transform: scaleX(0);
  transition: transform .3s ease;
}
.nav__link:hover{ color: var(--text); }
.nav__link:hover::after, .nav__link.is-active::after{ transform: scaleX(1); }
.nav__link.is-active{ color: var(--gold-soft); }

.nav__link--cta{
  background: rgba(227,176,75,.1);
  border: 1px solid rgba(227,176,75,.4);
  border-radius: 999px;
  padding: .6em 1.3em;
  color: var(--gold-soft);
  font-weight: 600;
}
.nav__link--cta::after{ display: none; }
.nav__link--cta:hover{ background: rgba(227,176,75,.18); }

@media (max-width: 980px){
  .nav__toggle{ display: flex; }
  .nav__links{
    position: fixed;
    inset: 72px 0 0 0;
    height: calc(100vh - 72px);
    background: color-mix(in srgb, var(--bg) 98%, transparent);
    flex-direction: column;
    justify-content: center;
    gap: 30px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s ease, transform .3s ease;
  }
  .nav__links.is-open{ opacity: 1; transform: translateY(0); pointer-events: auto; }
  .nav__link{ font-size: 1.25rem; }
}

/* =========================================================
   Hero
   ========================================================= */

.hero{
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-block: clamp(40px, 8vh, 90px);
}

.hero__inner{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 6vw, 60px);
  align-items: center;
}

.hero__name{
  font-size: clamp(3rem, 10vw, 5.6rem);
  background: linear-gradient(95deg, var(--text) 10%, var(--gold-soft) 55%, var(--teal) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: .18em;
}

.hero__tagline{
  font-size: clamp(1.1rem, 2.4vw, 1.45rem);
  color: var(--text);
  font-weight: 600;
  max-width: 32ch;
}

.hero__desc{ max-width: 48ch; font-size: 1.02rem; }

.hero__actions{ display: flex; flex-wrap: wrap; gap: 14px; margin-top: 1.6em; }

.hero__signal{ justify-self: center; width: min(72vw, 420px); }
.signal-core{ width: 100%; height: auto; }

.pulse-ring{
  fill: none;
  stroke: var(--teal);
  stroke-width: 1.4;
  animation: pulse-out 3.9s ease-out infinite;
}
@keyframes pulse-out{
  0%{ r: 16; opacity: .65; stroke-width: 2; }
  100%{ r: 190; opacity: 0; stroke-width: .4; }
}
.reduced-motion .pulse-ring{ animation: none; opacity: 0; }
.reduced-motion .pulse-dot{ display: none; }

.hero__scroll{
  position: absolute;
  bottom: clamp(16px, 3vh, 34px);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font-accent);
  font-size: .72rem;
  color: var(--text-dim);
  animation: bob 2.6s ease-in-out infinite;
}
.hero__scroll svg{ width: 18px; height: 18px; }
@keyframes bob{ 0%,100%{ transform: translate(-50%, 0); } 50%{ transform: translate(-50%, 6px); } }
.reduced-motion .hero__scroll{ animation: none; }

@media (min-width: 860px){
  .hero__inner{ grid-template-columns: 1.15fr .85fr; }
  .hero__signal{ justify-self: end; }
}

/* =========================================================
   Section basics
   ========================================================= */

section{ padding-block: clamp(70px, 11vw, 130px); position: relative; }
section h2{ font-size: clamp(1.85rem, 4vw, 2.6rem); max-width: 20ch; }
.section-desc{ max-width: 52ch; margin-top: -.4em; }

/* =========================================================
   About
   ========================================================= */

.about__inner{ display: grid; gap: 48px; }
.about__text p{ max-width: 62ch; }

.about__stats{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 3vw, 28px);
  border-top: 1px solid var(--hairline);
  padding-top: 32px;
}
.stat{ display: flex; flex-direction: column; gap: .3em; }
.stat__num{ font-family: var(--font-display); font-size: clamp(1.7rem, 4vw, 2.4rem); color: var(--gold-soft); }
.stat__label{ font-size: .86rem; color: var(--text-dim); }

@media (min-width: 860px){
  .about__inner{ grid-template-columns: 1.3fr 1fr; align-items: start; }
}

/* =========================================================
   Skills
   ========================================================= */

.skills__group{ margin-top: 2.2em; }
.skills__group h3{
  font-family: "Cairo", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .9em;
}

/* =========================================================
   Projects
   ========================================================= */

.filters{ display: flex; flex-wrap: wrap; gap: 10px; margin: 2em 0 2.6em; }
.filter{
  font-family: var(--font-accent);
  font-size: .8rem;
  padding: .6em 1.15em;
  border-radius: 999px;
  border: 1px solid var(--hairline-strong);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all .25s ease;
}
.filter:hover{ color: var(--text); }
.filter.is-active{ background: var(--gold); border-color: var(--gold); color: var(--btn-ink); font-weight: 700; }

.projects__grid{ display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 640px){ .projects__grid{ grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px){ .projects__grid{ grid-template-columns: repeat(3, 1fr); } }

.project-card{
  position: relative;
  padding: 28px 26px;
  border-radius: 16px;
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  border: 1px solid var(--hairline);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.project-card:hover{
  transform: translateY(-6px);
  border-color: rgba(227,176,75,.4);
  box-shadow: 0 24px 50px -24px rgba(227,176,75,.3);
}
.project-card.is-hidden{ display: none; }

.project-card__star{
  position: absolute;
  top: 22px;
  inset-inline-start: 26px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 0 rgba(227,176,75,.6);
  transition: box-shadow .3s ease;
}
.project-card:hover .project-card__star{ box-shadow: 0 0 14px 3px rgba(227,176,75,.6); }

.project-card__cat{ font-family: var(--font-accent); font-size: .72rem; color: var(--teal); margin-bottom: .8em; }
.project-card h3{ font-size: 1.24rem; margin-bottom: .45em; }
.project-card p{ font-size: .92rem; margin-bottom: 1.2em; }
.project-card .tags{ display: flex; flex-wrap: wrap; gap: 8px; }
.project-card .tags span{
  font-family: "JetBrains Mono", monospace;
  font-size: .72rem;
  padding: .35em .8em;
  border-radius: 999px;
  border: 1px solid var(--hairline-strong);
  color: var(--text-dim);
}

/* =========================================================
   Contact
   ========================================================= */

.contact__inner{ display: grid; gap: 44px; }

.contact__direct{ list-style: none; margin: 2em 0 0; padding: 0; display: flex; flex-direction: column; gap: 14px; }
.contact__direct li a, .contact__direct li{ display: flex; align-items: center; gap: .8em; font-size: 1.02rem; color: var(--text); }
.contact__direct svg{ width: 20px; height: 20px; color: var(--gold); flex-shrink: 0; }
.contact__direct li a{ transition: color .25s ease; }
.contact__direct li a:hover{ color: var(--gold-soft); }
.contact__location{ color: var(--text-dim) !important; }
.contact__location svg{ color: var(--teal); }

.contact__form{
  background: linear-gradient(160deg, var(--surface), var(--surface-2));
  border: 1px solid var(--hairline);
  border-radius: 26px;
  padding: clamp(24px, 4vw, 38px);
}

.hidden-field{ position: absolute; opacity: 0; height: 0; overflow: hidden; pointer-events: none; }

.field{ margin-bottom: 20px; }
.field label{ display: block; font-size: .85rem; color: var(--text-dim); margin-bottom: .6em; }
.field input, .field textarea{
  width: 100%;
  background: rgba(128,128,128,.06);
  border: 1px solid var(--hairline-strong);
  border-radius: 10px;
  padding: .9em 1em;
  color: var(--text);
  font-family: "Cairo", sans-serif;
  font-size: .98rem;
  resize: vertical;
  transition: border-color .25s ease, background .25s ease;
}
.field input:focus, .field textarea:focus{ outline: none; border-color: var(--gold); }

.form__status{ margin-top: 14px; font-size: .9rem; min-height: 1.4em; color: var(--teal); }
.form__status[data-state="error"]{ color: #e0745c; }

@media (min-width: 900px){ .contact__inner{ grid-template-columns: 1fr 1.1fr; align-items: start; } }

/* =========================================================
   Footer
   ========================================================= */

.footer{ border-top: 1px solid var(--hairline); padding-block: 30px; }
.footer__inner{
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
  text-align: center;
  font-size: .86rem;
  color: var(--text-dim);
}
.footer__links{ display: flex; gap: 22px; }
.footer__links a{ color: var(--text-dim); transition: color .25s ease; }
.footer__links a:hover{ color: var(--gold-soft); }

@media (min-width: 700px){
  .footer__inner{ flex-direction: row; justify-content: space-between; text-align: start; }
}