/* ==========================================================================
   Islom Nurmukhammadov — AI Engineer & Mobile Developer
   Design tokens: Graphite #0a0b0e · Cloud #f6f7fb · Signal #4c7cf3
                  Drift #8b6bf2 · Pulse #38d9e0 · Ink #12131a
   Type: Space Grotesk (display) + Inter (ui/body)
   ========================================================================== */

:root{
  --bg:#0a0b0e; --bg-elevated:#101218; --bg-elevated-2:#15171f;
  --text:rgba(247,248,252,.96); --text-2:rgba(247,248,252,.66); --text-3:rgba(247,248,252,.42);
  --glass:rgba(255,255,255,.055); --glass-strong:rgba(255,255,255,.09);
  --glass-border:rgba(255,255,255,.12); --glass-hi:rgba(255,255,255,.20);
  --shadow:0 24px 70px -30px rgba(0,0,0,.65), 0 1px 0 rgba(255,255,255,.05) inset;
  --shadow-sm:0 12px 30px -18px rgba(0,0,0,.55);
  --blue:#4c7cf3; --violet:#8b6bf2; --cyan:#38d9e0;
  --blue-soft:rgba(76,124,243,.16); --violet-soft:rgba(139,107,242,.14); --cyan-soft:rgba(56,217,224,.14);
  --grad-accent:linear-gradient(135deg,var(--blue),var(--violet) 60%,var(--cyan));
  --radius-lg:26px; --radius-md:16px; --radius-sm:11px; --radius-full:999px;
  --container:1240px; --pad:clamp(1.25rem,5vw,3rem);
  --section-pad:clamp(4.5rem,10vw,8rem);
  --ease:cubic-bezier(.16,.84,.44,1); --ease-soft:cubic-bezier(.4,0,.2,1);
  --font-display:'Space Grotesk',Inter,system-ui,sans-serif;
  --font-ui:'Inter',system-ui,-apple-system,sans-serif;
  color-scheme: dark;
}
[data-theme="light"]{
  --bg:#f5f6fb; --bg-elevated:#ffffff; --bg-elevated-2:#eef0f7;
  --text:#12131a; --text-2:rgba(18,19,26,.66); --text-3:rgba(18,19,26,.44);
  --glass:rgba(255,255,255,.58); --glass-strong:rgba(255,255,255,.78);
  --glass-border:rgba(16,18,30,.08); --glass-hi:rgba(255,255,255,.9);
  --shadow:0 24px 60px -30px rgba(30,40,90,.22), 0 1px 0 rgba(255,255,255,.7) inset;
  --shadow-sm:0 10px 26px -16px rgba(30,40,90,.18);
  --blue:#3f6be0; --violet:#7c5cf0; --cyan:#0fa9b6;
  --blue-soft:rgba(63,107,224,.10); --violet-soft:rgba(124,92,240,.09); --cyan-soft:rgba(15,169,182,.09);
  color-scheme: light;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){ html{scroll-behavior:auto} }
body{
  margin:0; background:var(--bg); color:var(--text);
  font-family:var(--font-ui); font-size:16px; line-height:1.6;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  transition:background-color .5s var(--ease-soft), color .5s var(--ease-soft);
  overflow-x:hidden;
}
h1,h2,h3{font-family:var(--font-display); margin:0; font-weight:600; letter-spacing:-.01em}
p{margin:0}
img{max-width:100%; display:block}
a{color:inherit; text-decoration:none}
button{font-family:inherit; cursor:pointer}
.container{max-width:var(--container); margin:0 auto; padding-inline:var(--pad)}
.section{padding-block:var(--section-pad)}
.sr-only{position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0}

.skip-link{
  position:fixed; top:-60px; left:1rem; z-index:1000; background:var(--blue); color:#fff;
  padding:.75rem 1.25rem; border-radius:var(--radius-sm); transition:top .25s var(--ease);
  font-weight:600; font-size:.9rem;
}
.skip-link:focus{top:1rem}

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

/* ---------- Glass system ---------- */
.glass{
  background:var(--glass); backdrop-filter:blur(22px) saturate(160%); -webkit-backdrop-filter:blur(22px) saturate(160%);
  border:1px solid var(--glass-border); border-radius:var(--radius-lg); box-shadow:var(--shadow);
  position:relative; isolation:isolate;
  transition:background-color .5s var(--ease-soft), border-color .5s var(--ease-soft), box-shadow .5s var(--ease-soft);
}
.lang-btn,.theme-btn,.social-btn,.pill,.badge,.footer,.intro,.lang-chip,.edu-hero-logo,.edu-card-logo{
  transition:background-color .5s var(--ease-soft), border-color .5s var(--ease-soft), color .5s var(--ease-soft);
}
@media (prefers-reduced-motion:reduce){
  .glass,.lang-btn,.theme-btn,.social-btn,.pill,.badge,.footer,.intro,.lang-chip,body{transition:none}
}
.glass::before{
  content:''; position:absolute; inset:0; border-radius:inherit; padding:1px;
  background:linear-gradient(160deg, var(--glass-hi), transparent 40%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor; mask-composite:exclude; pointer-events:none; opacity:.6;
}

/* ---------- Typography scale ---------- */
.section-title{font-size:clamp(1.7rem,3.6vw,2.55rem); letter-spacing:-.02em}
.section-subtitle{color:var(--text-2); font-size:clamp(.95rem,1.6vw,1.08rem); max-width:52ch; margin-top:.6rem}
.badge{
  display:inline-flex; align-items:center; font-family:var(--font-ui); font-size:.78rem; font-weight:600;
  letter-spacing:.06em; color:var(--text-2); background:var(--glass); border:1px solid var(--glass-border);
  padding:.5rem 1rem; border-radius:var(--radius-full); backdrop-filter:blur(10px);
}

/* ---------- Reveal-on-scroll ---------- */
.reveal{opacity:0; transform:translateY(18px) scale(.98); filter:blur(6px);
  transition:opacity .8s var(--ease), transform .8s var(--ease), filter .8s var(--ease);
  transition-delay:calc(var(--d,0) * 70ms);
}
.reveal.is-visible{opacity:1; transform:translateY(0) scale(1); filter:blur(0)}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1; transform:none; filter:none; transition:none}
}

/* ---------- Cinematic intro ---------- */
.intro{
  position:fixed; inset:0; z-index:900; display:flex; align-items:center; justify-content:center;
  background:var(--bg); transition:opacity .7s var(--ease-soft), visibility .7s;
}
.intro-bg{
  position:absolute; inset:0;
  background:radial-gradient(60% 50% at 50% 40%, var(--blue-soft), transparent 70%),
             radial-gradient(45% 40% at 70% 70%, var(--violet-soft), transparent 70%);
}
.intro-words{position:relative; text-align:center; padding-inline:1.5rem; width:100%; min-height:clamp(3.5rem,11vw,6rem)}
.intro-word{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:600; font-size:clamp(1.9rem,7vw,4.2rem);
  letter-spacing:.01em; opacity:0; filter:blur(14px); transform:scale(.92);
  transition:opacity .7s var(--ease), filter .7s var(--ease), transform .9s var(--ease);
  background:var(--grad-accent); -webkit-background-clip:text; background-clip:text; color:transparent;
  white-space:nowrap;
}
.intro-word.is-active{opacity:1; filter:blur(0); transform:scale(1); position:relative}
.intro-skip{
  position:absolute; bottom:clamp(1.5rem,5vh,3rem); left:50%; transform:translateX(-50%);
  background:none; border:1px solid var(--glass-border); color:var(--text-2); font-size:.8rem;
  padding:.55rem 1.1rem; border-radius:var(--radius-full); opacity:.7; transition:opacity .3s;
}
.intro-skip:hover{opacity:1}
.intro.intro--done{opacity:0; visibility:hidden; pointer-events:none}
@media (prefers-reduced-motion:reduce){
  .intro{transition:opacity .3s} .intro-word{transition:opacity .3s}
}

/* ---------- Floating controls ---------- */
.floating-controls{
  position:fixed; top:1.25rem; right:1.25rem; z-index:80; display:flex; align-items:center; gap:.5rem;
  opacity:0; transform:translateY(-10px); transition:opacity .6s var(--ease) .2s, transform .6s var(--ease) .2s;
}
.floating-controls.is-visible{opacity:1; transform:translateY(0)}
.lang-switch{
  display:flex; background:var(--glass); backdrop-filter:blur(18px); border:1px solid var(--glass-border);
  border-radius:var(--radius-full); padding:.25rem; gap:.15rem;
}
.lang-btn{
  background:none; border:none; color:var(--text-3); font-size:.72rem; font-weight:700; letter-spacing:.03em;
  padding:.4rem .65rem; border-radius:var(--radius-full); transition:color .25s, background .25s;
}
.lang-btn.is-active{color:var(--bg); background:var(--text)}
.theme-btn,.social-btn{
  width:2.5rem; height:2.5rem; display:flex; align-items:center; justify-content:center;
  background:var(--glass); backdrop-filter:blur(18px); border:1px solid var(--glass-border);
  border-radius:var(--radius-full); color:var(--text-2); transition:transform .3s var(--ease), color .3s, background .3s;
}
.theme-btn:hover,.social-btn:hover{transform:translateY(-2px); color:var(--text); background:var(--glass-strong)}
.theme-btn .icon-moon{display:none} [data-theme="light"] .theme-btn .icon-sun{display:none} [data-theme="light"] .theme-btn .icon-moon{display:block}
.social-btn{display:none}
@media (min-width:640px){ .social-btn{display:flex} }
@media (max-width:480px){
  .floating-controls{top:.85rem; right:.85rem}
  .lang-btn{padding:.35rem .5rem}
}

/* ---------- Icons ---------- */
.icon{width:1.3em; height:1.3em; fill:currentColor}
.icon--sm{width:1em; height:1em}
.icon--xl{width:3.2rem; height:3.2rem}
svg[fill="none"]{fill:none}

/* ---------- Hero ---------- */
.hero{position:relative; padding-top:clamp(6rem,14vh,9rem); padding-bottom:clamp(4rem,8vh,6rem); overflow:hidden}
.bg-canvas{position:absolute; inset:0; z-index:0; opacity:.55; pointer-events:none}
.hero-grid{
  position:relative; z-index:1; display:grid; grid-template-columns:1.15fr .85fr; gap:clamp(2rem,6vw,4rem);
  align-items:center;
}
.hero-content{max-width:640px}
.hero-name{font-size:clamp(2.6rem,6.4vw,4.6rem); line-height:1.04; margin-block:1.1rem .6rem}
.hero-title{font-family:var(--font-display); font-size:clamp(1.15rem,2.2vw,1.5rem); color:var(--text-2); font-weight:500}
.hero-desc{color:var(--text-2); font-size:1.05rem; max-width:46ch; margin-top:1rem; line-height:1.65}
.hero-meta{display:flex; align-items:center; gap:.85rem; margin-top:1.6rem; color:var(--text-3); font-size:.88rem; flex-wrap:wrap}
.meta-divider{width:4px; height:4px; border-radius:50%; background:var(--text-3)}
.hero-card-wrap{display:flex; justify-content:center}
.hero-card{
  width:min(100%,320px); padding:clamp(1.5rem,3vw,2rem); text-align:center;
  transform:rotate(1.2deg); transition:transform .5s var(--ease);
}
.hero-card:hover{transform:rotate(0deg) translateY(-4px)}
.portrait{
  width:132px; height:132px; margin:0 auto 1.1rem; border-radius:32%; overflow:hidden; position:relative;
  background:var(--grad-accent); box-shadow:0 16px 40px -18px var(--blue-soft);
}
.portrait img{width:100%; height:100%; object-fit:cover; position:relative; z-index:1}
.portrait-fallback{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-size:2.6rem; font-weight:700; color:#fff;
}
.hero-card-name{font-family:var(--font-display); font-weight:600; font-size:1.15rem}
.hero-card-role{color:var(--text-2); font-size:.88rem; margin-top:.3rem}

@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr; text-align:center}
  .hero-content{max-width:none; margin-inline:auto}
  .hero-desc{margin-inline:auto}
  .hero-meta{justify-content:center}
  .hero-card-wrap{order:-1; margin-bottom:1rem}
  .hero-card{width:min(100%,280px)}
}

/* ---------- Stats ---------- */
.stats-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1rem}
.stat-card{padding:1.6rem 1.4rem; transition:transform .35s var(--ease), box-shadow .35s var(--ease)}
.stat-card:hover{transform:translateY(-5px)}
.stat-icon{color:var(--blue); width:1.6rem; height:1.6rem; margin-bottom:.9rem}
.stat-value{font-family:var(--font-display); font-size:1.7rem; font-weight:600}
.stat-value--small{font-size:1rem; line-height:1.3; min-height:2.6em}
.stat-label{color:var(--text-3); font-size:.82rem; margin-top:.3rem}
@media (max-width:760px){ .stats-grid{grid-template-columns:repeat(2,1fr)} }
@media (max-width:460px){ .stats-grid{grid-template-columns:1fr 1fr; gap:.7rem} .stat-card{padding:1.2rem 1rem} }

/* ---------- Skills ---------- */
.skills-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:1.25rem; margin-top:2.2rem}
.skill-card{padding:1.75rem; transition:transform .35s var(--ease)}
.skill-card:hover{transform:translateY(-6px)}
.skill-top{display:flex; align-items:center; justify-content:space-between; margin-bottom:1.3rem}
.skill-icon{width:2.1rem; height:2.1rem; color:var(--violet)}
.skill-card h3{font-size:1.15rem; margin-bottom:.5rem}
.skill-card p{color:var(--text-2); font-size:.92rem; line-height:1.55}
.pill{
  display:inline-flex; align-items:center; gap:.3rem; font-size:.72rem; font-weight:700; letter-spacing:.03em;
  padding:.35rem .7rem; border-radius:var(--radius-full);
}
.pill--active{background:var(--cyan-soft); color:var(--cyan)}
.pill--focus{background:var(--blue-soft); color:var(--blue)}
.pill--learning{background:var(--violet-soft); color:var(--violet)}
@media (max-width:760px){ .skills-grid{grid-template-columns:1fr} }

/* ---------- Education ---------- */
.edu-hero-card{margin-top:2rem; padding:clamp(1.5rem,3vw,2.2rem); display:flex; align-items:center; gap:1.5rem}
.edu-hero-logo{
  width:76px; height:76px; flex:none; border-radius:var(--radius-md); background:var(--bg-elevated-2);
  display:flex; align-items:center; justify-content:center; overflow:hidden; padding:14px;
}
.edu-hero-logo img{width:100%; height:100%; object-fit:contain}
.logo-fallback{background:var(--grad-accent); padding:0}
.logo-fallback-text{display:none; font-family:var(--font-display); font-weight:700; color:#fff; font-size:.95rem; letter-spacing:.02em}
.logo-fallback .logo-fallback-text{display:block}
.edu-hero-body h3{font-size:1.35rem}
.edu-hero-body p{color:var(--text-2); margin-top:.35rem}
.edu-hero-meta{display:flex; align-items:center; gap:1rem; margin-top:1rem; flex-wrap:wrap}
.edu-year{color:var(--text-3); font-size:.85rem}
@media (max-width:560px){ .edu-hero-card{flex-direction:column; text-align:center} }

/* ---------- Carousel ---------- */
.carousel-header{display:flex; align-items:flex-end; justify-content:space-between; gap:1.5rem; flex-wrap:wrap; margin-bottom:2rem}
.carousel-controls{display:flex; gap:.5rem}
.carousel-btn{
  width:2.6rem; height:2.6rem; border-radius:50%; background:var(--glass); border:1px solid var(--glass-border);
  display:flex; align-items:center; justify-content:center; color:var(--text-2); backdrop-filter:blur(14px);
  transition:background .25s, color .25s, transform .25s;
}
.carousel-btn:hover{background:var(--glass-strong); color:var(--text); transform:translateY(-2px)}
.carousel{overflow-x:auto; scroll-snap-type:x mandatory; scrollbar-width:none; -ms-overflow-style:none; cursor:grab}
.carousel:active{cursor:grabbing}
.carousel::-webkit-scrollbar{display:none}
.carousel-track{display:flex; gap:1.1rem; padding:.4rem var(--pad) 1.5rem}
.edu-card{
  flex:0 0 auto; width:min(78vw,320px); scroll-snap-align:start; padding:1.6rem; display:flex; flex-direction:column;
  transition:transform .35s var(--ease);
}
.edu-card:hover{transform:translateY(-5px)}
.edu-card-logo{
  width:52px; height:52px; border-radius:var(--radius-sm); background:var(--bg-elevated-2); overflow:hidden;
  display:flex; align-items:center; justify-content:center; padding:9px; margin-bottom:1rem;
}
.edu-card-logo img{width:100%; height:100%; object-fit:contain}
.tag{font-size:.7rem; font-weight:700; letter-spacing:.05em; color:var(--text-3); text-transform:uppercase}
.edu-card h3{font-size:1.05rem; margin-block:.5rem .5rem}
.edu-card p{color:var(--text-2); font-size:.88rem; line-height:1.5; flex-grow:1}
.edu-card-link{
  display:inline-flex; align-items:center; gap:.4rem; margin-top:1.1rem; font-size:.85rem; font-weight:600;
  color:var(--blue); transition:gap .25s;
}
.edu-card-link:hover{gap:.6rem}
@media (min-width:900px){ .edu-card{width:300px} }

/* ---------- Trending IT directions ---------- */
.trend-list{display:flex; flex-direction:column; gap:.9rem; margin-top:2.2rem}
.trend-card{
  padding:1.5rem 1.75rem; display:flex; align-items:flex-start; gap:1.25rem;
  transition:transform .35s var(--ease), border-color .35s;
}
.trend-card:hover{transform:translateX(6px)}
.trend-icon{width:1.8rem; height:1.8rem; color:var(--cyan); flex:none; margin-top:.15rem}
.trend-card h3{font-size:1.05rem; margin-bottom:.3rem}
.trend-card p{color:var(--text-2); font-size:.9rem; line-height:1.55}
@media (max-width:560px){ .trend-card{padding:1.2rem 1.3rem; gap:.9rem} }

/* ---------- Programming languages ---------- */
.lang-stage{
  margin-top:2.2rem; padding:clamp(2.5rem,7vw,4rem) 2rem; display:flex; flex-direction:column; align-items:center;
  justify-content:center; gap:1rem; overflow:hidden; position:relative; min-height:14rem;
}
.lang-stage-flash{position:absolute; inset:0; background:#fff; opacity:0; pointer-events:none}
.lang-stage-flash.is-flashing{animation:flash .38s var(--ease)}
@keyframes flash{0%{opacity:0}18%{opacity:.55}100%{opacity:0}}
.lang-stage-icon{width:3.4rem; height:3.4rem; color:var(--text); transition:opacity .18s, transform .18s}
.lang-stage-name{font-family:var(--font-display); font-size:clamp(1.4rem,3vw,2rem); font-weight:600; transition:opacity .18s, transform .18s}
.lang-stage.is-switching .lang-stage-icon,.lang-stage.is-switching .lang-stage-name{opacity:0; transform:scale(.88) translateY(6px); filter:blur(3px)}
.lang-chips{display:flex; flex-wrap:wrap; justify-content:center; gap:.55rem; margin-top:1.4rem}
.lang-chip{
  display:flex; align-items:center; gap:.45rem; padding:.55rem 1rem; border-radius:var(--radius-full);
  background:var(--glass); border:1px solid var(--glass-border); color:var(--text-2); font-size:.85rem; font-weight:600;
  transition:background .25s, color .25s, border-color .25s, transform .25s;
}
.lang-chip .icon{width:1.1rem; height:1.1rem}
.lang-chip:hover{transform:translateY(-2px); color:var(--text)}
.lang-chip.is-active{background:var(--text); color:var(--bg); border-color:transparent}
@media (prefers-reduced-motion:reduce){
  .lang-stage-flash.is-flashing{animation:none}
  .lang-stage.is-switching .lang-stage-icon,.lang-stage.is-switching .lang-stage-name{opacity:1; transform:none; filter:none}
}

/* ---------- About ---------- */
.about-section{position:relative}
.about-grid{max-width:780px}
.about-text{color:var(--text-2); font-size:clamp(1.05rem,2vw,1.25rem); line-height:1.7; margin-top:1.25rem; max-width:60ch}

/* ---------- Contact ---------- */
.contact-block{text-align:center}
.contact-buttons{display:flex; justify-content:center; gap:1.1rem; margin-top:2.2rem; flex-wrap:wrap}
.contact-btn{
  display:flex; align-items:center; gap:.9rem; padding:1.1rem 1.6rem; min-width:250px; text-align:left;
  transition:transform .35s var(--ease), background .35s;
}
.contact-btn:hover{transform:translateY(-4px)}
.contact-btn .icon{width:1.7rem; height:1.7rem; color:var(--blue); flex:none}
.contact-btn span{display:flex; flex-direction:column; font-weight:600}
.contact-btn small{color:var(--text-3); font-weight:500; font-size:.78rem; margin-top:.15rem}

/* ---------- Footer ---------- */
.footer{padding-block:2.5rem; border-top:1px solid var(--glass-border)}
.footer-inner{display:flex; align-items:center; justify-content:space-between; color:var(--text-3); font-size:.85rem}
.footer-icons{display:flex; gap:.9rem}
.footer-icons a{color:var(--text-3); transition:color .25s}
.footer-icons a:hover{color:var(--text)}

/* ---------- Motion & accessibility floor ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important}
}