/* Header and nav blur background */
.header {
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px) saturate(120%);
  background: linear-gradient(180deg, rgba(11,15,20,0.92), rgba(11,15,20,0.7));
  border-bottom:1px solid rgba(255,255,255,.08);
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
  isolation: isolate;
}
.header::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-1px;
  height:1px;
  background: linear-gradient(90deg, rgba(77,225,167,0), rgba(77,225,167,.45), rgba(122,167,255,.45), rgba(122,167,255,0));
  opacity:.7;
  pointer-events:none;
}

/* Sidebar mobile nav */
.nav__sidebar-bg {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 2998;
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease;
}
.nav__sidebar-bg.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.nav__sidebar {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  height: 100dvh;
  width: 82vw;
  max-width: 340px;
  background: rgba(16,20,26,0.92);
  box-shadow: -2px 0 24px rgba(0,0,0,0.18);
  z-index: 2999;
  padding: 90px 24px 24px 24px;
  gap: 22px;
  transition: transform 0.25s cubic-bezier(.4,0,.2,1), opacity 0.2s ease;
  transform: translateX(100%);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  backdrop-filter: blur(12px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}
.nav__sidebar.active {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.nav__sidebar .nav__link {
  width: 100%;
  font-size: 1.18rem;
  padding: 16px 0;
  text-align: left;
  border-radius: 10px;
  margin: 0;
}
.nav__sidebar .nav__link.is-active {
  background: rgba(77,225,167,.08);
  color: var(--accent2);
}
.nav__sidebar-close {
  position: absolute;
  top: 18px;
  right: 18px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 2.1rem;
  cursor: pointer;
  z-index: 2001;
}
@media (max-width: 900px) {
  .nav__toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    z-index: 2100;
    width: 48px;
    height: 48px;
    font-size: 2rem;
  }
  .nav__list {
    display: none !important;
  }
}
@media (max-width: 900px) {
  .header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 0;
  }
  .logo {
    flex: 1 1 auto;
    min-width: 0;
  }
  .nav {
    flex: 0 0 auto;
    position: relative;
  }
  .nav__toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    z-index: 102;
    width: 48px;
    height: 48px;
    font-size: 2rem;
  }
  .nav__list {
    flex-direction: column;
    gap: 18px;
    background: rgba(11,15,20,0.99);
    border-radius: 0 0 18px 18px;
    border: none;
    position: fixed;
    left: 0;
    right: 0;
    top: 0;
    width: 100%;
    max-width: 100%;
    padding: 80px 0 24px 0;
    display: none;
    z-index: 2000;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
    min-height: 220px;
    text-align: center;
  }
  .nav__list.is-open {
    display: flex;
  }
  .nav__link {
    width: 100%;
    font-size: 1.25rem;
    padding: 18px 0;
    text-align: center;
    border-radius: 10px;
    margin: 0;
  }
  body.menu-open {
    overflow: hidden;
  }
}
@media (max-width: 900px) {
  .header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 0;
  }
  .logo {
    flex: 1 1 auto;
    min-width: 0;
  }
  .nav {
    flex: 0 0 auto;
    position: relative;
  }
  .nav__toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    margin-left: 12px;
    z-index: 101;
  }
  .nav__list {
    flex-direction: column;
    gap: 14px;
    background: rgba(11,15,20,.97);
    border-radius: 16px;
    border:1px solid var(--line);
    position: absolute;
    right: 0;
    top: 54px;
    width: min(320px, calc(100vw - 32px));
    padding: 18px 10px 14px 10px;
    display: none;
    z-index: 100;
    box-shadow: 0 8px 32px rgba(0,0,0,0.18);
  }
  .nav__list.is-open {
    display: flex;
  }
  .nav__link {
    width: 100%;
    font-size: 1.15rem;
    padding: 14px 0;
    text-align: left;
    border-radius: 10px;
    margin: 0;
  }
}
.nav__link:hover {
  text-decoration: none;
  filter: brightness(1.1);
}
.btn:hover, .card:hover, .contact-card:hover {
  text-decoration: none !important;
  filter: brightness(1.1);
}
.btn:hover {
  text-decoration: none;
  filter: brightness(1.1);
}
#scrollTopBtn {
  position: fixed;
  right: 24px;
  bottom: 32px;
  z-index: 100;
  background: var(--accent2);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 2rem;
  box-shadow: 0 4px 18px rgba(0,0,0,0.13);
  cursor: pointer;
  display: none;
  transition: background 0.2s, box-shadow 0.2s;
}
#scrollTopBtn:hover {
  background: var(--accent);
  box-shadow: 0 8px 32px rgba(77,225,167,0.18);
}
html, body {
  height: 100%;
  overflow-x: hidden;
}
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main, .section {
  flex: 1 0 auto;
}
.footer {
  flex-shrink: 0;
  padding: 18px 0;
  background: linear-gradient(0deg, rgba(7,10,15,0.95), rgba(7,10,15,0.75));
  border-top: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  box-shadow: 0 -10px 30px rgba(0,0,0,0.25);
  position: relative;
  isolation: isolate;
}
.footer::before{
  content:"";
  position:absolute;
  left:0; right:0; top:-1px;
  height:1px;
  background: linear-gradient(90deg, rgba(122,167,255,0), rgba(122,167,255,.35), rgba(77,225,167,.35), rgba(77,225,167,0));
  opacity:.6;
  pointer-events:none;
}
/* Contact Section Styles */
.contact-cards {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.contact-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 28px;
  border-radius: 18px;
  background: rgba(255,255,255,0.03);
  border: 1.5px solid var(--line);
  color: var(--text);
  font-size: 18px;
  font-family: var(--sans);
  box-shadow: 0 4px 18px rgba(0,0,0,0.10);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
  text-decoration: none;
  min-width: 220px;
}
.contact-card:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 32px rgba(77,225,167,0.10);
  border-color: var(--accent);
  color: var(--accent);
}
.contact-card.github svg { color: #7aa7ff; }
.contact-card.linkedin svg { color: #0a66c2; }
.contact-card.email svg { color: #4de1a7; }
.contact-card.telegram svg { color: #26a5e4; }
:root{
  --bg:#0b0f14;
  --text:#e6edf7;
  --muted:#9db0c9;
  --line:rgba(255,255,255,.08);

  --accent:#4de1a7;
  --accent2:#7aa7ff;

  --shadow: 0 12px 40px rgba(0,0,0,.35);
  --radius: 18px;
  --radius2: 22px;
  --container: 1080px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Noto Sans", Arial, "Apple Color Emoji","Segoe UI Emoji";
}

*{box-sizing:border-box}
html,body{height:100%}
html, body { background: #070a0f; }

body{
  margin:0;
  font-family:var(--sans);
  color:var(--text);
  background:
    radial-gradient(800px 400px at 18% 10%, rgba(77,225,167,.10), transparent 60%),
    radial-gradient(700px 380px at 85% 18%, rgba(122,167,255,.10), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, #070a0f 100%);
  line-height:1.5;

  overflow-x: hidden;
  padding-bottom: 58px; /* مساحة للفوتر الثابت */
}

img, video, canvas { max-width: 100%; height: auto; }
pre, code { max-width: 100%; }
a{color:inherit;text-decoration:none}
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav__toggle:focus-visible {
  outline: 2px solid var(--accent2);
  outline-offset: 3px;
}
strong{font-weight:700}

.container{
  width:min(var(--container), calc(100% - 32px));
  margin:0 auto;
}

.skip{
  position:absolute; left:-999px; top:auto;
  width:1px; height:1px; overflow:hidden;
}
.skip:focus{
  left:16px; top:16px;
  width:auto;height:auto;
  padding:10px 12px;
  background:#111826;
  border:1px solid var(--line);
  border-radius:12px;
  z-index:9999;
}

.header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(14px) saturate(120%);
  background: linear-gradient(180deg, rgba(11,15,20,0.92), rgba(11,15,20,0.7));
  border-bottom: 1px solid rgba(255,255,255,.08);
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
  isolation: isolate;
}
.header__inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}

.logo{display:flex; align-items:center; gap:10px}
.logo__mark{
  width:36px;height:36px;border-radius:12px;
  background: linear-gradient(135deg, rgba(77,225,167,.22), rgba(122,167,255,.22));
  border:1px solid var(--line);
  display:grid; place-items:center;
  font-family:var(--mono);
  letter-spacing:.5px;
}
.logo__text{
  font-family:var(--mono);
  color:var(--text);
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: .6px;
  line-height: 1.1;
}

.nav{position:relative}
.nav__list{
  list-style:none;
  display:flex; gap:14px;
  padding:0; margin:0;
  align-items:center;
}
.nav__link{
  display:inline-flex; padding:10px 12px;
  border-radius:12px;
  color:var(--muted);
  border:1px solid transparent;
  font-family: var(--mono);
  font-size: .86rem;
  letter-spacing: .7px;
  text-transform: uppercase;
}
.nav__link:hover{
  color:var(--text);
  border-color:var(--line);
  background: rgba(255,255,255,.03);
}
.nav__link.is-active{
  color:var(--text);
  border-color:rgba(77,225,167,.25);
  background: rgba(77,225,167,.06);
}

/* ======== NAV TOGGLE (Hamburger) ======== */
.nav__toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 14px;
  border: 1.5px solid var(--line);
  background: rgba(255,255,255,0.07);
  cursor: pointer;
  position: relative;
  flex-direction: column;
  gap: 5px;
  transition: background 0.18s, border 0.18s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--accent2);
  margin: 0;
  border-radius: 2px;
  transition: all 0.22s cubic-bezier(.4,0,.2,1);
}
.nav__toggle:focus,
.nav__toggle:hover {
  background: rgba(77,225,167,0.10);
  border-color: var(--accent2);
}

@media (max-width: 900px) {
  .nav__toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    z-index: 2100;
  }
  .nav__list {
    display: none !important;
  }
}

/* ======== DESKTOP NAVIGATION ======== */
@media (min-width: 901px) {
  .nav__sidebar,
  .nav__sidebar-bg {
    display: none !important;
  }
  .nav__list {
    display: flex !important;
    gap: 18px;
    align-items: center;
    background: none;
    position: static;
    box-shadow: none;
    padding: 0;
    width: auto;
    min-height: unset;
  }
  .nav__link {
    display: inline-flex;
    font-size: 1.13rem;
    padding: 10px 16px;
    border-radius: 10px;
    color: var(--muted);
    background: none;
    border: 1px solid transparent;
    margin: 0;
    text-align: center;
    transition: background 0.18s, color 0.18s, border 0.18s;
  }
  .nav__link:hover,
  .nav__link.is-active {
    color: var(--accent2);
    background: rgba(77,225,167,0.07);
    border-color: var(--accent2);
  }
}
.nav__toggle span{
  display:block;
  width:22px;
  height:2px;
  background: var(--accent2);
  margin:0;
  border-radius:2px;
}

/* HERO */
.hero{padding:34px 0 10px}
.hero__grid{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:22px;
  align-items:start;
}
.hero__title{
  font-size: clamp(36px, 4vw, 54px);
  margin:12px 0 8px;
  letter-spacing:-.5px;
}
.accent{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.hero__subtitle{color:var(--muted); font-size:16px; margin:0 0 18px}

.badge{
  display:inline-flex; align-items:center; gap:10px;
  padding:10px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background: rgba(255,255,255,.03);
  color:var(--muted);
  font-family:var(--mono);
  font-size:12px;
}
.dot{width:8px;height:8px;border-radius:50%; background: var(--accent); box-shadow: 0 0 18px rgba(77,225,167,.45)}

.hero__cta{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:18px}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:11px 14px;
  border-radius:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  color:var(--text);
  font-weight:600;
  cursor:pointer;
  transition: transform .12s, border-color .12s, background .12s, color .12s;
}
.btn:hover{
  transform: translateY(-2px) scale(1.03);
  border-color: var(--accent2);
  background: rgba(122,167,255,.10);
  color: var(--accent2);
}
.btn--primary{
  border-color: rgba(77,225,167,.35);
  background: rgba(77,225,167,.10);
}
.btn--primary:hover{border-color: rgba(77,225,167,.55)}
.btn--ghost{color:var(--muted)}
.btn--ghost:hover{color:var(--text)}

.hero__meta{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
.metaCard{
  padding:14px 14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.02);
  border-radius: var(--radius);
}
.metaCard__k{font-family:var(--mono); font-size:12px; color:var(--muted)}
.metaCard__v{font-size:13px; margin-top:6px}

/* Terminal */
.terminal{
  border-radius: var(--radius2);
  border:1.5px solid var(--accent2);
  overflow-x: auto;
  overflow-y: hidden;
  box-shadow: 0 8px 32px rgba(77,225,167,0.18);
  background: linear-gradient(135deg, #10141a 60%, #181c23 100%);
  max-width: 100%;
  margin-bottom: 18px;
}
.terminal__top{
  display:flex; align-items:center; gap:8px;
  padding:12px 12px;
  border-bottom:1px solid var(--line);
}
.pill{width:10px;height:10px;border-radius:999px}
.pill.red{background:#ff5f57}
.pill.yellow{background:#febc2e}
.pill.green{background:#28c840}
.terminal__title{margin-left:6px; color:var(--muted); font-family:var(--mono); font-size:12px}
.terminal__body{
  margin:0;
  padding:14px 14px 16px;
  font-family:var(--mono);
  color:#cfe2ff;
  font-size:13px;
  overflow-x:auto;
  background: transparent;
  border:none;
  position:relative;
  min-height: 120px;
  max-width: 100%;
}
.copy-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  background: var(--accent2);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 4px 12px;
  font-size: 13px;
  cursor: pointer;
  z-index: 2;
  transition: background 0.2s;
}
.copy-btn:hover {
  background: var(--accent);
}

.glowCard{
  margin-top:12px;
  padding:16px;
  border-radius: var(--radius2);
  border:1px solid rgba(77,225,167,.18);
  background: rgba(77,225,167,.06);
}
.glowCard__title{font-family:var(--mono); color:var(--text); margin:0 0 10px}
.list{margin:0; padding-left:18px; color:var(--muted)}
.list li{margin:6px 0}

/* Sections */
.section{padding:28px 0}
section[id] { scroll-margin-top: 90px; }
.section--alt{background: transparent;}
.section__head{
  display:flex; gap:16px;
  align-items:flex-end;
  justify-content:space-between;
  flex-wrap:wrap;
  margin-bottom:14px;
}
.section__title{margin:0; font-size:22px}
.section__desc{margin:0; color:var(--muted); max-width:740px}

.grid{display:grid; gap:12px}
.grid--2{grid-template-columns: repeat(2, minmax(0,1fr))}
.grid--3{grid-template-columns: repeat(3, minmax(0,1fr))}

.card{
  padding:16px;
  border:1px solid var(--line);
  border-radius: var(--radius2);
  background: rgba(255,255,255,.02);
  box-shadow: 0 10px 30px rgba(0,0,0,.18);
  transition: transform .18s, border-color .18s, box-shadow .18s;
  cursor: pointer;
}
.card:hover {
  transform: translateY(-8px) scale(1.04);
  border-color: var(--accent);
  box-shadow: 0 16px 40px rgba(77,225,167,0.13);
}

.card--line{background: linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01))}
.card__title{margin:0 0 8px; font-size:16px}
.card__text{margin:0; color:var(--muted)}
.card__foot{display:flex; align-items:center; gap:10px; flex-wrap:wrap; margin-top:12px}

.tag{
  display:inline-flex; align-items:center;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  color:var(--muted);
  font-size:12px;
  font-family:var(--mono);
  background: rgba(255,255,255,.02);
}
.tag--good{
  border-color: rgba(77,225,167,.35);
  background: rgba(77,225,167,.09);
  color: var(--text);
}
.tag--info{
  border-color: rgba(122,167,255,.35);
  background: rgba(122,167,255,.09);
  color: var(--text);
}
.tag--warn{
  border-color: rgba(255,193,7,.35);
  background: rgba(255,193,7,.12);
  color: var(--text);
}

/* Learning path list */
.check{list-style:none;margin:0;padding:0}
.check li{
  display:flex; align-items:center; justify-content:space-between;
  gap:10px;
  padding:10px 0;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.check li:last-child{border-bottom:none}
.check li span:first-child{color:var(--text)}
.check li span:last-child{white-space:nowrap}

.cardLink{display:block}
.cardLink:focus{outline:2px solid rgba(77,225,167,.35); outline-offset:2px; border-radius: var(--radius2);}

/* Footer ثابت باسمك فقط */
.footer{
  padding: 18px 0;
  background: linear-gradient(0deg, rgba(7,10,15,0.95), rgba(7,10,15,0.75));
  border-top: 1px solid rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  box-shadow: 0 -10px 30px rgba(0,0,0,0.25);
  flex-shrink: 0;
  position: relative;
  isolation: isolate;
}
.footer__inner{
  display:flex;
  justify-content:center;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .8px;
  text-transform: uppercase;
}
.muted{color:var(--muted)}

/* Animations (تحميل الصفحة) */
.fadeUp {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(.4,0,.2,1), transform 0.6s cubic-bezier(.4,0,.2,1);
}
.fadeUp.is-in {
  opacity: 1;
  transform: none;
}
.delay1 { transition-delay: 0.15s; }
.delay2 { transition-delay: 0.3s; }

@keyframes fadeUp{
  to{opacity:1; transform: translateY(0)}
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fadeUp {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* Mobile */
@media (max-width: 900px){
  .hero__grid{grid-template-columns: 1fr}
  .hero__meta{grid-template-columns: 1fr}
  .grid--3{grid-template-columns: 1fr}
  .grid--2{grid-template-columns: 1fr}
}

@media (max-width: 720px){
  .nav__toggle{display:inline-flex; align-items:center; justify-content:center}
  .nav__list{
    position:absolute;
    right:16px;
    top:62px;
    width: min(320px, calc(100% - 32px));
    flex-direction:column;
    gap:6px;
    padding:10px;
    border-radius: 16px;
    border:1px solid var(--line);
    background: rgba(11,15,20,.92);
    display:none;
  }
  .nav__list.is-open{display:flex}
  .nav__link{width:100%}
}

@media (max-width: 700px) {
  .contact-cards {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }
  .contact-card {
    min-width: 0;
    width: 100%;
    justify-content: flex-start;
  }
  .section { margin-bottom: 32px; }
}

@media (max-width: 900px) {
  body.menu-open .nav__toggle {
    opacity: 0;
    pointer-events: none;
  }
}