/* Public site — Byte-Via identity: flat, border-led, brand red on ink */
.container{width:min(1240px,92%);margin-inline:auto}
section{position:relative;padding:clamp(4rem,8vw,7rem) 0}
.eyebrow{display:inline-flex;align-items:center;gap:.7rem;font-weight:800;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-text);margin-bottom:1.1rem}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--brand)}
h2.sec-title{font-weight:900;font-size:clamp(1.65rem,1.2rem + 1.7vw,2.55rem);line-height:1.35;margin-bottom:.9rem;text-wrap:balance}
h2.sec-title em{font-style:normal;color:var(--brand-text);background:linear-gradient(var(--brand-soft),var(--brand-soft)) no-repeat 0 90%/100% .26em;box-decoration-break:clone}
.sec-sub{color:var(--text);max-width:680px;font-size:1.05rem}

#preloader{position:fixed;inset:0;background:var(--bg);z-index:9999;display:grid;place-content:center;justify-items:center;gap:1rem;transition:opacity .5s,visibility .5s}
#preloader.done{opacity:0;visibility:hidden}
.pl-ring{width:64px;height:64px;border-radius:var(--r-md);background:var(--brand);display:grid;place-items:center;color:#fff;font-weight:900;font-size:1.3rem;animation:pl 1.2s ease-in-out infinite}
@keyframes pl{50%{transform:scale(.92);opacity:.8}}
.pl-text{font-weight:700;color:var(--muted);letter-spacing:.2em;font-size:.75rem}
#progress{position:fixed;top:0;inset-inline-start:0;height:3px;width:0;background:var(--brand);z-index:1200}

/* header */
nav{position:fixed;top:0;inset-inline:0;z-index:1100;height:76px;display:flex;align-items:center;background:color-mix(in srgb,var(--bg) 90%,transparent);
  -webkit-backdrop-filter:saturate(180%) blur(14px);backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid transparent;transition:height .25s var(--ease),border-color .2s,box-shadow .2s}
nav.scrolled{height:62px;border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.nav-inner{width:min(1240px,92%);margin-inline:auto;display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{display:flex;align-items:center;gap:.7rem;font-weight:900;font-size:1.15rem;color:var(--ink)}
.logo .dot{width:30px;height:30px;border-radius:var(--r-sm);background:var(--brand);position:relative}
.logo .dot::after{content:"MR";position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-size:.72rem;font-weight:900;letter-spacing:.02em}
.logo b{color:var(--brand-text)}
.nav-links{display:flex;gap:.1rem;list-style:none}
.nav-links a{position:relative;padding:.5rem .75rem;border-radius:var(--r-sm);font-size:.93rem;font-weight:700;color:var(--ink-2);transition:.18s}
.nav-links a:hover{background:var(--bg-alt);color:var(--ink)}
.nav-links a.active{color:var(--brand-text)}
.nav-links a.active::after{content:"";position:absolute;inset-inline:.75rem;bottom:.1rem;height:2px;background:var(--brand);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:.5rem}
.lang-btn,.theme-btn{font:inherit;font-weight:700;font-size:.82rem;color:var(--ink-2);background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-sm);padding:.4rem .7rem;cursor:pointer;transition:.18s;display:grid;place-items:center;min-width:38px;height:38px}
.lang-btn:hover,.theme-btn:hover{border-color:var(--brand);color:var(--brand-text)}
.theme-btn svg{width:17px;height:17px}
.theme-btn .i-sun{display:none}
:root[data-theme="dark"] .theme-btn .i-sun{display:block}
:root[data-theme="dark"] .theme-btn .i-moon{display:none}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.burger span{width:22px;height:2px;background:var(--ink);border-radius:2px}

/* hero */
.hero{min-height:100svh;display:flex;align-items:center;padding:calc(76px + 2rem) 0 4rem;overflow:hidden;border-bottom:1px solid var(--line);
  background:radial-gradient(60rem 32rem at 88% 10%,var(--glow),transparent 70%),var(--bg)}
[dir="rtl"] .hero{background:radial-gradient(60rem 32rem at 12% 10%,var(--glow),transparent 70%),var(--bg)}
.hero::before{content:"";position:absolute;inset:0;pointer-events:none;background-image:linear-gradient(to right,var(--grid) 1px,transparent 1px),linear-gradient(to bottom,var(--grid) 1px,transparent 1px);
  background-size:72px 72px;-webkit-mask-image:radial-gradient(52rem 30rem at 85% 25%,#000,transparent 72%);mask-image:radial-gradient(52rem 30rem at 85% 25%,#000,transparent 72%)}
[dir="rtl"] .hero::before{-webkit-mask-image:radial-gradient(52rem 30rem at 15% 25%,#000,transparent 72%);mask-image:radial-gradient(52rem 30rem at 15% 25%,#000,transparent 72%)}
#neural{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.55}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:4rem;align-items:center}
.hero-name{font-weight:900;font-size:clamp(2.1rem,1.15rem + 3.6vw,3.85rem);line-height:1.25;margin:.2rem 0 .8rem;text-wrap:balance}
.hero-name em{font-style:normal;color:var(--brand-text)}
.type-line{font-weight:800;font-size:clamp(1.05rem,2.2vw,1.4rem);color:var(--ink-2);min-height:2.4em;display:flex;align-items:center;gap:4px}
.type-line .caret{width:2px;height:1.2em;background:var(--brand);animation:blink 1s infinite}
@keyframes blink{50%{opacity:0}}
.hero-p{color:var(--text);max-width:600px;margin:1rem 0 1.8rem;font-size:1.06rem}
.hero-p b{color:var(--ink);font-weight:700}
.hero-actions{display:flex;gap:.75rem;flex-wrap:wrap}
.hero-visual{display:flex;justify-content:center}
.photo-wrap{position:relative;width:min(380px,80vw)}
.photo-wrap::before{content:"";position:absolute;inset-block:18px -18px;inset-inline:18px -18px;border:2px solid var(--brand);border-radius:var(--r-lg);z-index:0}
.photo-wrap::after{content:"";position:absolute;inset-inline-start:-14px;top:36px;width:4px;height:84px;background:var(--brand);border-radius:2px}
.photo-wrap img{position:relative;z-index:1;border-radius:var(--r-lg);width:100%;aspect-ratio:4/4.6;object-fit:cover;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.orbit{display:none}
.float-chip{position:absolute;z-index:3;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.5rem .85rem;font-weight:800;font-size:.8rem;color:var(--ink);
  display:flex;align-items:center;gap:.5rem;box-shadow:var(--shadow-2)}
.float-chip svg{width:16px;height:16px;stroke:var(--brand-text)}
.chip-1{top:6%;inset-inline-end:-8%}.chip-2{bottom:16%;inset-inline-start:-12%}.chip-3{bottom:-6%;inset-inline-end:6%}
.rise{opacity:0;transform:translateY(22px);animation:rise .8s var(--ease) forwards}
@keyframes rise{to{opacity:1;transform:none}}
.d1{animation-delay:.1s}.d2{animation-delay:.2s}.d3{animation-delay:.3s}.d4{animation-delay:.4s}.d5{animation-delay:.5s}

/* stats — ink band */
.stats-sec{padding:0;background:var(--band)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat{padding:2.2rem 1.2rem;text-align:center;border-inline-end:1px solid var(--band-line);position:relative}
.stat:last-child{border-inline-end:0}
.stat .num{font-weight:900;font-size:clamp(1.8rem,3.4vw,2.6rem);color:var(--on-band);line-height:1.2}
.stat .num::after{content:"";display:block;width:26px;height:3px;background:var(--brand-dark);margin:.5rem auto 0}
.stat .lbl{color:var(--on-band-muted);font-size:.9rem;margin-top:.5rem}

.marquee{border-block:1px solid var(--line);padding:.9rem 0;overflow:hidden;background:var(--bg-alt)}
.track{display:flex;gap:3rem;width:max-content;animation:scrollX 40s linear infinite}
.marquee:hover .track{animation-play-state:paused}
@keyframes scrollX{to{transform:translateX(50%)}}
html[dir="ltr"] .track{animation-name:scrollXL}
@keyframes scrollXL{to{transform:translateX(-50%)}}
.track span{font-weight:700;color:var(--muted);font-size:.88rem;display:flex;align-items:center;gap:3rem;white-space:nowrap}
.track span::after{content:"";width:6px;height:6px;background:var(--brand);border-radius:1px}

.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal[data-delay="1"]{transition-delay:.1s}.reveal[data-delay="2"]{transition-delay:.2s}.reveal[data-delay="3"]{transition-delay:.3s}

/* cards */
.about-grid,.skill-grid,.proj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:3rem}
.pillar,.skill-card,.proj{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.75rem 1.6rem;transition:border-color .25s,box-shadow .25s,transform .25s}
.pillar::before,.proj::before{content:"";position:absolute;inset-block-start:-1px;inset-inline-start:-1px;width:3.5rem;height:3px;background:var(--brand);border-radius:var(--r-lg) 0 0 0;transition:width .35s var(--ease)}
[dir="rtl"] .pillar::before,[dir="rtl"] .proj::before{border-radius:0 var(--r-lg) 0 0}
.pillar:hover,.skill-card:hover,.proj:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);transform:translateY(-3px)}
.pillar:hover::before,.proj:hover::before{width:calc(100% + 2px)}
.pillar .ico{width:46px;height:46px;border-radius:var(--r-md);background:var(--brand-soft);display:grid;place-items:center;margin-bottom:1.1rem}
.pillar .ico svg,.skill-card h3 svg,.c-card .ico svg{width:23px;height:23px;stroke:var(--brand-text)}
.pillar h3{font-size:1.15rem;margin-bottom:.6rem}
.pillar p{font-size:.95rem;color:var(--text)}

.tl{margin-top:3.5rem;position:relative;padding-inline-start:2.2rem}
.tl::before{content:"";position:absolute;top:6px;bottom:6px;inset-inline-start:7px;width:2px;background:var(--line-strong)}
.tl-item{position:relative;padding-bottom:2.5rem}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;inset-inline-start:-2.2rem;top:8px;width:16px;height:16px;border-radius:3px;background:var(--bg);border:3px solid var(--brand)}
.tl-item:last-child::before{background:var(--brand)}
.tl-item .year{font-weight:900;color:var(--brand-text);font-size:.95rem;letter-spacing:.06em}
.tl-item h3{font-size:1.2rem;margin:.2rem 0 .4rem}
.tl-item p{max-width:680px}

#skills{background:var(--bg-alt);border-block:1px solid var(--line)}
.skill-card h3{font-size:1.05rem;margin-bottom:1rem;display:flex;align-items:center;gap:.7rem}
.skill-card h3 svg{flex-shrink:0}
.chips{display:flex;flex-wrap:wrap;gap:.5rem}
.chips span{font-size:.8rem;font-weight:600;color:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:.25rem .7rem;background:var(--surface-2);transition:.18s;cursor:default}
.chips span:hover{color:#fff;border-color:var(--brand);background:var(--brand)}
.filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:2rem}
.filters button{font:inherit;font-weight:700;font-size:.88rem;color:var(--ink-2);background:transparent;border:1px solid var(--line-strong);border-radius:var(--r-sm);padding:.4rem 1rem;cursor:pointer;transition:.18s}
.filters button.active,.filters button:hover{color:#fff;background:var(--brand);border-color:var(--brand)}
.proj-grid{margin-top:2rem}
.proj{display:flex;flex-direction:column;gap:.8rem}
.proj.featured{grid-column:span 2;background:linear-gradient(135deg,var(--brand-soft),var(--surface) 60%)}
.proj.hide{display:none}
.proj .cat{font-weight:800;font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-text)}
.proj h3{font-size:1.22rem}
.proj h3 small{display:block;color:var(--muted);font-weight:700;font-size:.72rem;letter-spacing:.08em;margin-top:2px}
.proj p{font-size:.95rem;flex:1}
.proj .impact{font-size:.83rem;color:var(--ink-2);border-top:1px solid var(--line);padding-top:.8rem;display:flex;align-items:center;gap:.5rem;font-weight:700}
.proj .impact svg{width:15px;height:15px;stroke:var(--brand-text);flex-shrink:0}

.cert-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem;margin-top:3rem}
.cert{border:1px solid var(--line);border-radius:var(--r-lg);padding:1.4rem .8rem;text-align:center;background:var(--surface);font-weight:900;font-size:1.05rem;color:var(--ink);transition:.25s}
.cert small{display:block;font-weight:600;font-size:.76rem;margin-top:.3rem;color:var(--muted)}
.cert:hover{border-color:var(--brand);transform:translateY(-3px);box-shadow:var(--shadow-2)}

/* quote — ink band with brand glow */
.quote{text-align:center;overflow:hidden;background:var(--band);color:var(--on-band-muted)}
.quote::before{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(50rem 26rem at 90% -10%,rgba(var(--brand-rgb),.32),transparent 70%),radial-gradient(40rem 22rem at 0% 110%,rgba(141,137,136,.14),transparent 70%)}
.quote .container{position:relative}
.quote .seeds{display:none}
.quote blockquote{font-weight:800;font-size:clamp(1.4rem,3.2vw,2.3rem);line-height:1.8;max-width:900px;margin-inline:auto;color:var(--on-band)}
.quote blockquote em{font-style:normal;color:var(--brand-dark)}
.quote cite{display:block;margin-top:1.4rem;color:var(--on-band-muted);font-style:normal;font-size:.95rem}

/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.contact-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.75rem;border-top:3px solid var(--brand)}
.tabs{display:flex;gap:.4rem;margin-bottom:1.4rem;flex-wrap:wrap}
.tabs button{font:inherit;font-weight:700;font-size:.88rem;color:var(--ink-2);background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--r-sm);padding:.45rem .95rem;cursor:pointer;transition:.18s}
.tabs button.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.tab-pane{display:none}.tab-pane.active{display:block}
.contact-cards{display:grid;gap:.9rem;margin-top:1.6rem}
.c-card{display:flex;align-items:center;gap:1rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.9rem 1.1rem;transition:.2s}
a.c-card:hover{border-color:var(--brand)}
.c-card .ico{width:42px;height:42px;border-radius:var(--r-md);background:var(--brand-soft);display:grid;place-items:center;flex-shrink:0}
.c-card .lbl{font-size:.78rem;color:var(--muted)}
.c-card .val{font-weight:800;color:var(--ink);direction:ltr;unicode-bidi:plaintext}
[dir="rtl"] .c-card .val{text-align:right}
.c-card .val.ar{direction:inherit}
.slots{display:grid;grid-template-columns:repeat(auto-fill,minmax(88px,1fr));gap:.5rem;margin-bottom:1rem}
.slots label{cursor:pointer}
.slots input{position:absolute;opacity:0}
.slots span{display:block;text-align:center;border:1px solid var(--line-strong);border-radius:var(--r-sm);padding:.35rem;font-weight:700;font-size:.85rem;color:var(--ink-2);transition:.15s}
.slots input:checked+span{background:var(--brand);border-color:var(--brand);color:#fff}
.slots span:hover{border-color:var(--brand)}
.slots .none{grid-column:1/-1;color:var(--muted);font-size:.9rem}

footer{border-top:1px solid var(--line);padding:2.4rem 0;text-align:center;color:var(--muted);font-size:.9rem;background:var(--bg-alt)}
footer b{color:var(--ink)}
footer .wm-line{width:56px;height:3px;background:var(--brand);margin:0 auto 1rem}
.fab{position:fixed;bottom:24px;z-index:1000;width:50px;height:50px;border-radius:var(--r-md);display:grid;place-items:center;cursor:pointer;transition:.2s;border:0}
#toTop{inset-inline-start:24px;background:var(--surface);border:1px solid var(--line);color:var(--ink);opacity:0;visibility:hidden;transform:translateY(12px);box-shadow:var(--shadow-2)}
#toTop.show{opacity:1;visibility:visible;transform:none}
#toTop:hover{border-color:var(--brand);color:var(--brand-text)}
#wa{inset-inline-end:24px;background:var(--brand);box-shadow:var(--shadow-2);width:auto;padding:0 1.1rem;gap:.5rem;color:#fff;font-weight:700;display:flex;align-items:center}
#wa:hover{background:var(--brand-hover)}
#wa svg{width:22px;height:22px;fill:#fff}
#adminFab{display:none}

@media(max-width:1024px){
  .hero .container,.contact-box{grid-template-columns:1fr}
  .hero .container{text-align:center;gap:3.5rem}
  .hero-p,.type-line{margin-inline:auto;justify-content:center}.hero-actions{justify-content:center}
  .about-grid,.skill-grid,.proj-grid{grid-template-columns:repeat(2,1fr)}
  .cert-strip{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:720px){
  .nav-links,.nav-cta .btn{display:none}
  .burger{display:flex}
  .nav-links.open{display:flex;position:fixed;top:62px;inset-inline:0;background:var(--bg);flex-direction:column;padding:1rem 6%;border-bottom:1px solid var(--line)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-inline-end:0}.stat:nth-child(-n+2){border-bottom:1px solid var(--band-line)}
  .about-grid,.skill-grid,.proj-grid{grid-template-columns:1fr}
  .proj.featured{grid-column:span 1}
  .cert-strip{grid-template-columns:repeat(2,1fr)}
  .float-chip{display:none}
  #wa span{display:none}#wa{padding:0;width:50px;justify-content:center}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001s!important;transition-duration:.001s!important}.reveal{opacity:1;transform:none}}