*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#070b12;--panel:#0e1520;--panel2:#111a27;--text:#eef3f8;--muted:#8995a7;--line:#202c3d;--accent:#20e3a2;--accent2:#36a8ff;--max:1160px}
html{scroll-behavior:smooth}
body{font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;overflow-x:hidden}
a{text-decoration:none;color:inherit}button{font:inherit}.container{width:min(var(--max),90%);margin:auto}
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(7,11,18,.72);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.05)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between}
.brand{font-weight:800;font-size:22px;letter-spacing:-1px}.brand span{color:var(--accent)}
.nav-menu{display:flex;align-items:center;gap:26px}.nav-menu>a{font-size:13px;color:#aeb8c8;transition:.25s}.nav-menu>a:hover{color:var(--accent)}
.nav-cv{padding:8px 13px;border:1px solid var(--accent);border-radius:7px;color:var(--accent)!important}.nav-cv:hover{background:var(--accent);color:#04100b!important}
.menu-toggle{display:none;border:0;background:transparent;color:white;font-size:22px}
.hero{min-height:100vh;display:flex;align-items:center;position:relative;padding-top:80px;overflow:hidden}
.hero:before{content:"";position:absolute;width:650px;height:650px;left:28%;top:0;background:radial-gradient(circle,rgba(32,227,162,.13),transparent 67%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.availability{display:inline-flex;align-items:center;gap:8px;color:var(--accent);font-size:12px;border:1px solid rgba(32,227,162,.22);padding:7px 11px;border-radius:99px;background:rgba(32,227,162,.05);margin-bottom:22px}.availability span{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.eyebrow,.section-head>span{font-size:12px;color:var(--accent);letter-spacing:2px;font-weight:700}
.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.03;letter-spacing:-3px;margin:10px 0 20px}.hero h1 span{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;color:transparent}
.hero h2{font-size:clamp(20px,3vw,28px);color:#d7deea;margin-bottom:18px}.hero h2 #typing{color:var(--accent)}.cursor{animation:blink .7s infinite;color:var(--accent)}@keyframes blink{50%{opacity:0}}
.hero-text{max-width:650px;color:var(--muted);font-size:15px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;gap:9px;padding:12px 18px;border-radius:8px;font-size:13px;font-weight:700;transition:.3s}.btn-primary{background:var(--accent);color:#03110c}.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 35px rgba(32,227,162,.18)}.btn-ghost{border:1px solid var(--line);color:#d8e0eb}.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-3px)}
.socials{display:flex;gap:10px;margin-top:25px}.socials a{width:39px;height:39px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:#8e9aab;transition:.25s}.socials a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-4px)}
.hero-visual{min-height:500px;display:grid;place-items:center;position:relative}.profile{width:330px;height:390px;border-radius:28px;border:1px solid rgba(32,227,162,.3);background:linear-gradient(145deg,#142131,#0a111b);box-shadow:0 35px 90px rgba(0,0,0,.35),inset 0 0 50px rgba(32,227,162,.04);display:flex;flex-direction:column;justify-content:center;align-items:center;position:relative;transform:rotate(3deg);transition:.5s}.profile:hover{transform:rotate(0) scale(1.025)}
.profile:before{content:"";position:absolute;inset:18px;border:1px dashed rgba(32,227,162,.15);border-radius:20px}.profile-photo{width:210px;height:210px;object-fit:cover;object-position:center top;border-radius:50%;display:block;border:3px solid rgba(32,227,162,.45);box-shadow:0 0 45px rgba(32,227,162,.12);position:relative;z-index:2}
.profile-initials{width:155px;height:155px;border-radius:50%;display:grid;place-items:center;font-size:42px;font-weight:800;background:linear-gradient(135deg,rgba(32,227,162,.18),rgba(54,168,255,.18));border:1px solid rgba(32,227,162,.4);color:var(--accent);box-shadow:0 0 70px rgba(32,227,162,.12)}
.profile-caption{text-align:center;margin-top:28px;display:flex;flex-direction:column}.profile-caption strong{font-size:18px}.profile-caption span{color:var(--muted);font-size:12px}
.orbit{position:absolute;border:1px solid rgba(32,227,162,.09);border-radius:50%;pointer-events:none}.orbit-1{width:480px;height:480px;animation:spin 20s linear infinite}.orbit-2{width:570px;height:570px;animation:spin 30s linear infinite reverse}@keyframes spin{to{transform:rotate(360deg)}}
.float-card{position:absolute;padding:10px 13px;border:1px solid var(--line);background:rgba(12,19,29,.88);backdrop-filter:blur(10px);border-radius:8px;font-size:11px;color:#b9c3d1;display:flex;gap:8px;align-items:center;box-shadow:0 15px 40px rgba(0,0,0,.25)}.float-card i{color:var(--accent)}.fc-one{top:90px;right:10px;animation:float 4s ease-in-out infinite}.fc-two{left:0;bottom:125px;animation:float 4s ease-in-out infinite 1s}.fc-three{right:0;bottom:65px;animation:float 4s ease-in-out infinite 2s}@keyframes float{50%{transform:translateY(-10px)}}
.scroll-cue{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:5px;color:#687589;font-size:10px}.scroll-cue i{color:var(--accent)}
.section{padding:110px 0}.section-dark{background:#0b111a}.section-head{margin-bottom:48px}.section-head.center{text-align:center;max-width:750px;margin:0 auto 48px}.section-head h2{font-size:clamp(31px,4.5vw,48px);line-height:1.15;letter-spacing:-1.8px;margin-top:8px}.section-head h2 em,.contact-box h2 em{font-style:normal;color:var(--accent)}.section-head p{color:var(--muted);font-size:14px;margin-top:12px}
.about-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:70px}.about-copy p{color:var(--muted);font-size:15px;margin-bottom:18px}.about-copy strong{color:#dfe7f1}
.fact-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.fact{background:var(--panel);border:1px solid var(--line);border-radius:11px;padding:17px;display:flex;gap:12px;align-items:center;transition:.3s}.fact:hover{border-color:rgba(32,227,162,.5);transform:translateY(-3px)}.fact i{color:var(--accent);width:35px;height:35px;display:grid;place-items:center;background:rgba(32,227,162,.08);border-radius:8px}.fact small,.fact strong{display:block}.fact small{color:#6f7c8e;font-size:10px}.fact strong{font-size:12px;color:#cbd4e0}
.skill-groups{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.skill-card{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:25px;transition:.35s}.skill-card:hover{transform:translateY(-6px);border-color:rgba(32,227,162,.55)}.skill-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:9px;background:rgba(32,227,162,.08);color:var(--accent);margin-bottom:17px}.skill-card h3{font-size:16px;margin-bottom:15px}.tags{display:flex;flex-wrap:wrap;gap:7px}.tags span{font-size:10px;color:#9eabbd;border:1px solid #273446;background:#101925;padding:6px 8px;border-radius:5px}.skill-note{color:#59677a;font-size:10px;margin-top:12px}
.project-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.project{background:var(--panel);border:1px solid var(--line);padding:27px;border-radius:13px;transition:.35s}.project:hover{transform:translateY(-7px);border-color:rgba(32,227,162,.55);box-shadow:0 20px 60px rgba(0,0,0,.2)}.project-top{display:flex;justify-content:space-between;margin-bottom:24px}.project-number{font-size:12px;color:var(--accent);font-weight:700}.project-top a{color:#7f8da0;font-size:19px}.project-top a:hover{color:var(--accent)}.project h3{font-size:19px;margin-bottom:11px}.project p{font-size:13px;color:var(--muted);margin-bottom:18px}.center{text-align:center;margin-top:35px}
.timeline{max-width:880px;margin:auto;position:relative}.timeline:before{content:"";position:absolute;left:9px;top:0;bottom:0;width:1px;background:#263243}.timeline-item{position:relative;padding-left:45px;margin-bottom:42px}.timeline-marker{position:absolute;left:2px;top:4px;width:15px;height:15px;background:var(--accent);border-radius:50%;box-shadow:0 0 18px rgba(32,227,162,.45)}.timeline-date{color:var(--accent);font-size:11px;margin-bottom:7px}.timeline-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:23px}.timeline-card h3{font-size:20px}.timeline-card h4{font-size:13px;color:#a0acbc;font-weight:500;margin-bottom:11px}.timeline-card p{font-size:13px;color:var(--muted);margin-top:7px}
.education{max-width:900px;margin:auto;padding:30px;border:1px solid var(--line);background:var(--panel);border-radius:14px;display:flex;gap:20px}.edu-icon{min-width:55px;height:55px;border-radius:11px;background:rgba(32,227,162,.08);color:var(--accent);display:grid;place-items:center;font-size:22px}.edu-date{color:var(--accent);font-size:11px}.education h3{font-size:21px;margin:4px 0}.education h4{font-size:13px;color:#a2aebf;font-weight:500}.education p{font-size:13px;color:var(--muted);margin-top:9px}
.research-card{max-width:900px;margin:auto;padding:30px;background:var(--panel);border:1px solid var(--line);border-radius:14px;display:grid;grid-template-columns:55px 1fr;gap:20px}.research-icon{width:55px;height:55px;background:rgba(32,227,162,.08);color:var(--accent);display:grid;place-items:center;border-radius:10px}.research-card h3{font-size:19px}.research-card p{font-size:13px;color:var(--muted);margin:10px 0 18px}.research-interests{max-width:900px;margin:18px auto 0;display:flex;gap:8px;flex-wrap:wrap}.research-interests span{padding:8px 11px;border-radius:6px;border:1px solid var(--line);font-size:10px;color:#8d9bad}
.cert-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.certificate{display:flex;gap:16px;padding:23px;background:var(--panel);border:1px solid var(--line);border-radius:12px;transition:.3s}.certificate:hover{border-color:rgba(32,227,162,.5);transform:translateY(-4px)}.certificate>i{width:45px;height:45px;min-width:45px;border-radius:9px;display:grid;place-items:center;background:rgba(32,227,162,.08);color:var(--accent)}.certificate h3{font-size:15px}.certificate p{font-size:12px;color:#8996a8}.certificate small{font-size:10px;color:#5f6c7e}
.contact{padding-bottom:120px}.contact-box{text-align:center;max-width:850px;margin:auto;padding:65px 25px;border:1px solid rgba(32,227,162,.2);border-radius:20px;background:radial-gradient(circle at 50% 0,rgba(32,227,162,.08),transparent 50%),var(--panel)}.contact-box>span{font-size:11px;color:var(--accent);letter-spacing:2px;font-weight:700}.contact-box h2{font-size:clamp(34px,5vw,54px);line-height:1.12;letter-spacing:-2px;margin:12px 0}.contact-box>p{color:var(--muted);font-size:14px}.email{display:inline-block;color:var(--accent);font-size:clamp(18px,3vw,28px);margin:28px 0 22px;border-bottom:1px solid rgba(32,227,162,.5);padding-bottom:5px}.contact-links{display:flex;justify-content:center;gap:9px;flex-wrap:wrap}.contact-links a{border:1px solid var(--line);padding:9px 13px;border-radius:7px;color:#a8b3c3;font-size:11px;transition:.25s}.contact-links a:hover{border-color:var(--accent);color:var(--accent)}.location{margin-top:22px;color:#687689;font-size:11px}
footer{border-top:1px solid #172131;background:#05080d}.footer-inner{min-height:90px;display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-inner p{font-size:10px;color:#5e6b7d}.footer-social{display:flex;gap:10px}.footer-social a{color:#718095}.footer-social a:hover{color:var(--accent)}
#topBtn{position:fixed;right:max(18px,env(safe-area-inset-right));bottom:max(18px,env(safe-area-inset-bottom));width:44px;height:44px;box-sizing:border-box;border:0;border-radius:8px;background:var(--accent);color:#03110c;display:grid;place-items:center;opacity:0;visibility:hidden;cursor:pointer;transition:.3s;z-index:900}#topBtn.show{opacity:1;visibility:visible}#topBtn:hover{transform:translateY(-4px)}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .75s ease,transform .75s ease}.reveal.show{opacity:1;transform:none}
#preloader{position:fixed;inset:0;background:var(--bg);z-index:5000;display:grid;place-items:center;transition:.5s}#preloader span{width:46px;height:46px;border:3px solid #203040;border-top-color:var(--accent);border-radius:50%;animation:load .8s linear infinite}@keyframes load{to{transform:rotate(360deg)}}

@media(max-width:900px){
  .menu-toggle{display:block}.nav-menu{position:fixed;right:-100%;top:76px;width:280px;height:calc(100vh - 76px);padding:30px;background:#09101a;border-left:1px solid var(--line);display:flex;flex-direction:column;align-items:flex-start;gap:22px;transition:.35s}.nav-menu.open{right:0}
  .hero-grid,.about-grid{grid-template-columns:1fr}.hero-copy{text-align:center}.hero-text{margin:auto}.hero-actions,.socials{justify-content:center}.hero-visual{order:-1;min-height:390px}.profile{transform:scale(.82) rotate(3deg)}.orbit-1{width:400px;height:400px}.orbit-2{width:470px;height:470px}.float-card{display:none}
  .skill-groups{grid-template-columns:1fr 1fr}
}
@media(max-width:650px){
  .section{padding:80px 0}.hero h1{font-size:43px}.hero-visual{min-height:310px}.profile{transform:scale(.66) rotate(3deg);margin-top:-35px;margin-bottom:-55px}.orbit{display:none}.skill-groups,.project-grid,.cert-grid{grid-template-columns:1fr}.fact-grid{grid-template-columns:1fr}.research-card{grid-template-columns:1fr}.education{flex-direction:column}.footer-inner{flex-direction:column;justify-content:center;padding:25px 0}.scroll-cue{display:none}.contact-box{padding:45px 18px}.email{font-size:18px}
}


/* ===== Portfolio Ready Additions ===== */
.brand-logo{display:flex;align-items:center;height:42px}
.brand-logo img{display:block;width:122px;height:42px;object-fit:contain;object-position:left center}
.project{overflow:hidden}
.project-cover{height:210px;margin:-27px -27px 24px;position:relative;overflow:hidden;background:#0a111b;border-bottom:1px solid var(--line)}
.project-cover img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease,filter .5s ease}
.project:hover .project-cover img{transform:scale(1.045);filter:saturate(1.08)}
.cover-label{position:absolute;left:14px;bottom:14px;padding:6px 9px;border-radius:5px;background:rgba(7,11,18,.82);border:1px solid rgba(32,227,162,.35);color:var(--accent);font-size:9px;letter-spacing:1px;font-weight:700;backdrop-filter:blur(8px)}
.company-heading{display:flex;align-items:center;gap:15px;margin-bottom:10px}
.company-heading img{width:118px;height:42px;object-fit:contain;border-radius:7px}
.company-heading h3{margin:0}
.company-heading h4{margin:2px 0 0}
.footer-logo img{width:108px;height:38px}
.footer-copy{display:flex;flex-direction:column;gap:2px}
.footer-copy span{font-size:9px;color:#465366}
footer .footer-inner{padding:12px 0}
@media(max-width:650px){
  .brand-logo img{width:105px;height:38px}
  .project-cover{height:190px}
  .company-heading{align-items:flex-start;flex-direction:column;gap:10px}
  .company-heading img{width:145px;height:48px}
  .footer-copy{text-align:center;align-items:center}
}


/* ===== Advanced Portfolio Features ===== */
body.light{--bg:#f4f7fb;--panel:#ffffff;--panel2:#eef3f8;--text:#102033;--muted:#5d6b7d;--line:#dbe3ed;--accent:#079e72;--accent2:#1689d8}body.light .header{background:rgba(244,247,251,.8)}body.light .section-dark{background:#eaf0f6}body.light .nav-menu{background:#fff}body.light .project,body.light .skill-card,body.light .fact,body.light .timeline-card,body.light .education,body.light .research-card,body.light .certificate{box-shadow:0 8px 30px rgba(20,40,70,.06)}
.theme-toggle{width:38px;height:38px;border:1px solid var(--line);background:var(--panel);color:var(--accent);border-radius:50%;cursor:pointer;margin-left:auto;margin-right:12px;transition:.25s}.theme-toggle:hover{transform:rotate(18deg);border-color:var(--accent)}
.brand-logo img{width:78px;height:28px;object-fit:contain;object-position:left center}.footer-logo img{width:78px;height:28px}.brand-logo{height:32px}
#particles{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:0;opacity:.55}.header,main,footer,#topBtn,.modal{position:relative;z-index:1}.hero:before{z-index:0}.hero-grid,.scroll-cue{position:relative;z-index:1}
 .cursor-dot,.cursor-ring{position:fixed;top:0;left:0;pointer-events:none;z-index:6000;border-radius:50%;transform:translate(-50%,-50%);opacity:0;will-change:transform}.cursor-dot{width:6px;height:6px;background:var(--accent)}.cursor-ring{width:30px;height:30px;border:1px solid var(--accent);transition:width .18s,height .18s,opacity .18s,transform .09s linear}.cursor-ring.active{width:48px;height:48px;opacity:.5}@media(pointer:fine){body.has-custom-cursor{cursor:none}body.has-custom-cursor a,body.has-custom-cursor button{cursor:none}.cursor-dot,.cursor-ring{opacity:0}.has-custom-cursor .cursor-dot,.has-custom-cursor .cursor-ring{opacity:1}}@media(pointer:coarse){.cursor-dot,.cursor-ring{display:none}}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-top:48px}.stat{min-height:134px;padding:26px 20px;background:var(--panel);border:1px solid var(--line);border-radius:15px;text-align:center;display:flex;flex-direction:column;justify-content:center}.stat strong{display:block;font-size:38px;line-height:1.1;color:var(--accent)}.stat span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-top:9px}.project-details{display:inline-flex;align-items:center;gap:7px;margin-top:18px;color:var(--accent);font-size:11px;font-weight:700}.project-details i{transition:.2s}.project-details:hover i{transform:translateX(4px)}
.github-section{margin-top:42px;border-top:1px solid var(--line);padding-top:28px}.github-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.github-heading span{font-size:10px;letter-spacing:2px;color:var(--accent);font-weight:700}.github-heading small{font-size:10px;color:var(--muted)}.repo-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.repo-card{padding:17px;background:var(--panel);border:1px solid var(--line);border-radius:10px;min-height:145px;transition:.25s}.repo-card:hover{transform:translateY(-4px);border-color:rgba(32,227,162,.5)}.repo-card h4{font-size:14px;margin-bottom:7px}.repo-card p{font-size:11px;color:var(--muted);min-height:34px}.repo-meta{display:flex;gap:12px;margin-top:13px;color:#738196;font-size:9px}.repo-meta b{color:var(--accent);font-weight:600}.repo-card a{display:inline-block;margin-top:10px;font-size:10px;color:var(--accent)}.paper-meta{display:block;margin-top:12px;color:#637084;font-size:10px}
.research-list{display:grid;gap:16px}.research-card{grid-template-columns:55px 1fr}.preview-btn{margin-top:10px;border:1px solid var(--line);background:transparent;color:var(--accent);border-radius:5px;padding:6px 9px;font-size:9px}.preview-btn:hover{background:rgba(32,227,162,.08);border-color:var(--accent)}
.modal{position:fixed;inset:0;z-index:7000;display:none;align-items:center;justify-content:center;padding:20px}.modal.open{display:flex}.modal-backdrop{position:absolute;inset:0;background:rgba(2,6,12,.82);backdrop-filter:blur(8px)}.certificate-preview{position:relative;width:min(620px,92vw);z-index:2}.modal-close{position:absolute;right:-8px;top:-48px;width:36px;height:36px;border-radius:50%;border:1px solid #536176;background:#0c1420;color:#fff;font-size:24px}.certificate-sheet{aspect-ratio:1.45/1;background:linear-gradient(135deg,#fff,#edf3f7);color:#1b2a3b;border:12px solid #c8d5df;outline:2px solid #6ea08e;box-shadow:0 25px 80px rgba(0,0,0,.35);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:35px}.cert-ribbon{font-size:10px;letter-spacing:4px;color:#087b59;font-weight:800}.cert-seal{width:60px;height:60px;border-radius:50%;border:2px solid #087b59;display:grid;place-items:center;color:#087b59;margin:18px 0}.certificate-sheet h2{font-family:Georgia,serif;font-size:28px;margin:5px 0 8px}.certificate-sheet p{font-size:13px}.cert-small{letter-spacing:2px}.cert-line{width:190px;border-top:1px solid #9cafbd;margin:18px}.certificate-sheet small{max-width:390px;color:#6a7887;font-size:9px}
@media(max-width:900px){.stats-grid{grid-template-columns:1fr 1fr}.repo-grid{grid-template-columns:1fr 1fr}.theme-toggle{margin-left:auto}}
@media(max-width:650px){.brand-logo img{width:70px;height:25px}.stats-grid,.repo-grid{grid-template-columns:1fr}.github-heading{align-items:flex-start;flex-direction:column;gap:5px}.certificate-sheet h2{font-size:21px}.certificate-sheet{padding:20px}}

/* ===== Final polish: footer, GitHub page, subpage cursor and light-mode readability ===== */
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:42px;padding:46px 0 34px}
.footer-about p{max-width:330px;color:#8995a7;font-size:11px;margin-top:14px;line-height:1.8}
.footer-column{display:flex;flex-direction:column;gap:8px}.footer-column h4{font-size:11px;letter-spacing:1px;color:var(--text);margin-bottom:5px}.footer-column a{font-size:10px;color:#78869a;transition:.2s}.footer-column a:hover{color:var(--accent);transform:translateX(2px)}
.footer-social{display:flex;gap:8px;margin-top:10px}.footer-social a{width:31px;height:31px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:#718095}.footer-bottom{border-top:1px solid #172131;display:flex;justify-content:space-between;gap:20px;padding:15px 0;font-size:9px;color:#657286}.footer-bottom span{color:#4f5c6e}
.github-cta{text-align:center;margin-top:32px}.github-cta .skill-note{margin-top:9px}
.subnav-actions{display:flex;align-items:center;gap:10px}.subnav-actions .theme-toggle{margin:0}
.github-page{padding-top:140px;min-height:100vh}.github-page h1{font-size:clamp(38px,5vw,58px);line-height:1.1}.github-profile-card{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 22px;background:var(--panel);border:1px solid var(--line);border-radius:13px;margin-bottom:24px}.github-profile-card>div{display:flex;align-items:center;gap:14px}.github-profile-card>div>i{font-size:32px;color:var(--accent)}.github-profile-card strong,.github-profile-card span{display:block}.github-profile-card strong{font-size:16px}.github-profile-card span{font-size:10px;color:var(--muted);margin-top:2px}.repo-grid-page{grid-template-columns:repeat(3,1fr)}.repo-card-large{min-height:185px}.repo-title{display:flex;align-items:center;gap:9px}.repo-title>i{color:var(--accent)}.repo-title h3{font-size:14px;word-break:break-word}.repo-card-large p{margin-top:12px;min-height:50px}.repo-card a i{transition:.2s}.repo-card a:hover i{transform:translateX(4px)}.repo-error{grid-column:1/-1;padding:40px;text-align:center;border:1px solid var(--line);border-radius:12px;background:var(--panel);color:var(--muted)}.repo-error i{font-size:28px;color:var(--accent);margin-bottom:10px}
/* Make explicit dark-theme hard-coded grays readable in light mode */
body.light .hero h2,body.light .socials a,body.light .nav-menu>a,body.light .btn-ghost,body.light .float-card,body.light .fact strong,body.light .tags span,body.light .skill-note,body.light .timeline-card p,body.light .timeline-card small,body.light .education p,body.light .education small,body.light .research-card p,body.light .research-card small,body.light .certificate p,body.light .certificate small,body.light .repo-meta,body.light .footer-about p,body.light .footer-column a,body.light .footer-bottom,body.light .footer-bottom span{color:#425268}
body.light .tags span{background:#f0f4f8;border-color:#ccd7e2}.light .float-card{background:rgba(255,255,255,.92)}body.light .nav-menu{border-color:#dbe3ed}body.light footer{background:#e8eef5;border-top-color:#d4dde8}body.light .footer-bottom{border-top-color:#d2dce7}body.light .footer-column h4{color:#17263a}body.light .github-profile-card,body.light .repo-card{background:#fff}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.repo-grid-page{grid-template-columns:1fr 1fr}}
@media(max-width:650px){.footer-grid{grid-template-columns:1fr 1fr;gap:24px}.footer-about{grid-column:1/-1}.footer-bottom{flex-direction:column;text-align:center;align-items:center}.github-profile-card{align-items:flex-start;flex-direction:column}.repo-grid-page{grid-template-columns:1fr}}

/* ===== Mobile Navigation & Layout Polish ===== */
@media (max-width: 900px){
  .header{z-index:3000;}
  .nav{height:72px;position:relative;}
  .brand-logo{flex:0 0 auto;}
  .theme-toggle{margin-left:auto;}
  .menu-toggle{display:grid;place-items:center;width:42px;height:42px;margin-left:8px;position:relative;z-index:3100;}
  .nav-menu{
    position:fixed;
    top:72px;
    left:0;
    right:0;
    width:100%;
    height:auto;
    max-height:calc(100dvh - 72px);
    overflow-y:auto;
    padding:24px 22px 30px;
    background:#09101a;
    border:0;
    border-top:1px solid rgba(255,255,255,.08);
    box-shadow:0 24px 45px rgba(0,0,0,.35);
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:8px;
    right:auto;
    transform:translateY(-12px);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
    z-index:3050;
  }
  .nav-menu.open{
    right:auto;
    transform:translateY(0);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
  }
  .nav-menu>a{
    width:100%;
    padding:13px 14px;
    border-radius:9px;
    font-size:14px;
    color:#d8e0eb;
  }
  .nav-menu>a:hover,.nav-menu>a:active{background:rgba(32,227,162,.08);color:var(--accent);}
  .nav-menu .nav-cv{text-align:center;margin-top:6px;padding:11px 14px;}
  body.menu-open{overflow:hidden;}

  .hero{padding-top:88px;min-height:auto;}
  .hero-grid{gap:24px;}
  .hero-visual{order:-1;min-height:320px;margin-top:5px;overflow:visible;}
}

@media (max-width:650px){
  .nav{width:min(var(--max),92%);}
  .brand-logo img{width:70px;height:25px;}
  .theme-toggle{width:38px;height:38px;}
  .menu-toggle{width:40px;height:40px;}
  .nav-menu{top:72px;max-height:calc(100dvh - 72px);padding:20px 18px 28px;}
  .hero{padding-top:88px;}
  .hero-grid{gap:10px;}
  .hero-visual{min-height:285px;margin-bottom:4px;}
  .profile{transform:scale(.62) rotate(3deg);margin-top:-30px;margin-bottom:-70px;}
  .hero-copy{padding-top:8px;}
  .hero h1{font-size:clamp(38px,11vw,46px);letter-spacing:-2px;}
  .hero h2{font-size:21px;line-height:1.35;min-height:30px;}
  .hero-text{font-size:14px;line-height:1.7;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .socials{margin-top:20px;}
  .section{padding:72px 0;}
  .section-head{margin-bottom:34px;}
  .section-head h2{font-size:32px;}
  .project,.skill-card,.education,.research-card{padding:21px;}
  .project-cover{margin:-21px -21px 20px;}
  .timeline-item{padding-left:35px;}
  .timeline-card{padding:19px;}
  .contact-box{padding:40px 16px;}
  .email{word-break:break-word;}
}

body.light .nav-menu{background:#fff;box-shadow:0 24px 45px rgba(20,40,70,.16);border-top-color:#dbe3ed;}
body.light .nav-menu>a{color:#425268;}
body.light .nav-menu>a:hover,body.light .nav-menu>a:active{background:#eef7f4;color:#079e72;}

@media (min-width:901px){body.menu-open{overflow:auto;}}

/* ===== Portfolio improvements ===== */
body{font-family:"Manrope",Arial,sans-serif}
.subpage{padding-top:145px;min-height:78vh}
.subpage h1{font-size:clamp(38px,5vw,64px);line-height:1.08;letter-spacing:-2px}
.subpage .section-head h1{margin-top:8px}
.company-heading{display:flex;align-items:center;gap:14px}
.company-heading img{width:48px;height:48px;object-fit:contain;border-radius:9px;background:#fff;padding:5px;border:1px solid var(--line)}
.research-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:12px}
.report-link{display:inline-flex;align-items:center;gap:7px;color:var(--accent);font-size:11px;font-weight:700;border:1px solid var(--line);padding:7px 10px;border-radius:6px;transition:.25s}
.report-link:hover{border-color:var(--accent);background:rgba(32,227,162,.06);transform:translateY(-2px)}
.education-list{display:grid;gap:18px;max-width:900px;margin:auto}
.education-list .education{max-width:none}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.gallery-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:.3s}
.gallery-card:hover{transform:translateY(-5px);border-color:rgba(32,227,162,.55);box-shadow:0 18px 45px rgba(0,0,0,.15)}
.gallery-card img{width:100%;aspect-ratio:4/3;display:block;object-fit:cover}
.gallery-card>div{padding:14px}
.gallery-card span{font-size:9px;color:var(--accent);letter-spacing:1.5px;font-weight:800}
.gallery-card h3{font-size:13px;margin-top:4px}
.research-detail-hero{display:grid;grid-template-columns:90px 1fr;gap:24px;align-items:start;max-width:980px;margin:auto}
.research-icon.large{width:90px;height:90px;font-size:30px}
.research-detail-hero h1{margin:9px 0 14px}
.research-detail-hero p{color:var(--muted);font-size:15px;max-width:850px}
.detail-box p{color:var(--muted);margin:8px 0}
.detail-box strong{color:var(--text)}
.project{overflow:hidden}
.project-cover{margin:-27px -27px 22px;position:relative;overflow:hidden;background:var(--panel2)}
.project-cover img{width:100%;aspect-ratio:16/8;object-fit:cover;display:block;transition:.4s}
.project:hover .project-cover img{transform:scale(1.03)}
.cover-label{position:absolute;left:12px;bottom:12px;padding:6px 9px;border-radius:6px;background:rgba(4,10,16,.82);backdrop-filter:blur(8px);color:#fff;font-size:9px;letter-spacing:1.5px;font-weight:800}
body.light .cover-label{background:rgba(255,255,255,.88);color:#102033}
body.light .nav-menu>a{color:#425166}
body.light .nav-menu>a:hover{color:var(--accent)}
body.light .menu-toggle{color:#102033}
body.light .hero h2{color:#304156}
body.light .hero-text,.light .about-copy p,.light .project p,.light .timeline-card p,.light .education p,.light .research-card p,.light .contact-box>p{color:#536276}
body.light .about-copy strong,body.light .fact strong{color:#17283d}
body.light .fact small{color:#718095}
body.light .fact i,body.light .skill-icon,body.light .research-icon,body.light .edu-icon,body.light .certificate>i{background:rgba(7,158,114,.08)}
body.light .tags span{background:#f4f7fb;border-color:#d4deea;color:#4d5c70}
body.light .skill-note,body.light .paper-meta{color:#68788d}
body.light .project-top a{color:#607087}
body.light .timeline:before{background:#c9d5e2}
body.light .timeline-card h4,body.light .education h4{color:#536276}
body.light .research-interests span{color:#536276;background:#fff}
body.light .certificate p{color:#536276}
body.light .float-card{background:rgba(255,255,255,.9);color:#425166;box-shadow:0 15px 40px rgba(20,40,70,.1)}
body.light .btn-ghost{color:#23364d}
body.light .btn-ghost:hover{color:var(--accent)}
body.light .footer-column a,body.light .footer-about p{color:#536276}
body.light footer{background:#eef3f8;border-top-color:#d8e1eb}
body.light .footer-bottom{border-top-color:#d8e1eb}
body.light .footer-inner{color:#536276}
body.light .header{border-bottom-color:rgba(20,40,70,.08)}
body.light .subnav-actions .btn-ghost{background:#fff}
code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.85em;color:var(--accent)}
@media(max-width:950px){.gallery-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.gallery-grid{grid-template-columns:1fr}.research-detail-hero{grid-template-columns:1fr}.research-icon.large{width:65px;height:65px}.subpage{padding-top:120px}}

.project-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px}.project-actions .project-details,.project-actions .report-link{margin-top:0}.report-link{white-space:nowrap}

/* ===== Auto-expanding managed content =====
   All collections controlled from the Admin Dashboard grow with their content.
   No fixed section height is used, so adding items automatically pushes the
   following section downward without leaving overlap or artificial blank space.
*/
#skills,
#projects,
#experience,
#research,
section.section:has(.cert-grid){
  height:auto;
  min-height:0;
}

.skill-groups,
.project-grid,
.cert-grid,
.research-list,
.timeline{
  height:auto;
  min-height:0;
  align-content:start;
}

.skill-groups,
.project-grid,
.cert-grid{
  grid-auto-rows:auto;
}

.timeline{
  display:block;
}

.timeline-item:last-child{
  margin-bottom:0;
}

/* Keep long titles/descriptions from forcing horizontal overflow. */
.skill-card,
.project,
.certificate,
.timeline-card,
.research-card{
  min-width:0;
  height:auto;
}

.skill-card h3,
.project h3,
.certificate h3,
.timeline-card h3,
.research-card h3,
.skill-card p,
.project p,
.certificate p,
.timeline-card p,
.research-card p{
  overflow-wrap:anywhere;
}

/* ===== Final UI/UX Upgrade ===== */
.hero-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:28px;max-width:620px}.hero-metrics>div{padding:13px 14px;border:1px solid var(--line);border-radius:10px;background:rgba(14,21,32,.72)}.hero-metrics strong{display:block;color:var(--accent);font-size:20px;line-height:1.1}.hero-metrics span{display:block;color:var(--muted);font-size:9px;margin-top:4px}.language-list{display:grid;gap:13px}.language-item{min-width:0}.language-top{display:flex;justify-content:space-between;gap:10px;font-size:11px;color:#cdd7e3;margin-bottom:5px}.language-top strong{color:var(--accent);font-size:10px}.language-track{height:7px;border-radius:99px;background:#1a2635;overflow:hidden}.language-track span{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--accent),var(--accent2))}.project-actions,.research-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap}.project-actions .btn,.research-actions .btn{min-height:38px}.project-actions .report-link,.research-actions .report-link{margin-top:0}.report-link{display:inline-flex;align-items:center;justify-content:center;min-height:38px}.certificate>div{min-width:0}.certificate .preview-btn{margin-top:12px}.modal{z-index:5000}.certificate-preview{width:min(1000px,92vw);max-height:90vh;overflow:hidden}.certificate-preview-head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--line)}.certificate-preview-head h2{font-size:24px;margin-top:4px}.certificate-preview-head p{color:var(--muted);font-size:12px}.certificate-preview-frame{height:min(72vh,720px);background:#101722;display:grid;place-items:center}.certificate-preview-frame iframe{width:100%;height:100%;border:0}.certificate-preview-frame img{max-width:100%;max-height:100%;object-fit:contain}.certificate-placeholder{text-align:center;color:var(--muted);padding:30px}.certificate-placeholder i{font-size:38px;color:var(--accent);margin-bottom:12px}.modal-close{z-index:2}.company-heading{min-width:0}.company-heading>div{min-width:0}.research-card>div:last-child{min-width:0}.paper-meta{display:block}.topBtnFix{right:20px}
@media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-visual{order:-1}.hero-copy{max-width:760px}.skill-groups{grid-template-columns:1fr 1fr}.project-grid,.cert-grid{grid-template-columns:1fr 1fr}.about-grid{grid-template-columns:1fr;gap:35px}.hero{padding-bottom:65px}.float-card{font-size:10px}.fc-one{right:0}.fc-two{left:0}.fc-three{right:0}}
@media(max-width:650px){.container{width:min(92%,1160px)}.nav{height:68px}.brand-logo img{max-width:76px;height:auto}.hero{padding-top:82px}.hero-grid{gap:4px}.hero-visual{min-height:260px}.profile{transform:scale(.56) rotate(2deg);margin-top:-45px;margin-bottom:-90px}.orbit-1{width:360px;height:360px}.orbit-2{width:420px;height:420px}.float-card{padding:8px 10px;font-size:9px}.fc-one{top:30px}.fc-two{bottom:82px}.fc-three{bottom:30px}.availability{font-size:10px}.hero h1{font-size:clamp(36px,10.5vw,46px);letter-spacing:-2px}.hero h2{font-size:19px}.hero-text{font-size:13px}.hero-actions{display:grid;grid-template-columns:1fr;gap:9px}.hero-actions .btn{width:100%;justify-content:center}.hero-metrics{grid-template-columns:1fr 1fr;max-width:none}.hero-metrics>div:last-child{grid-column:1/-1}.section{padding:68px 0}.section-head h2{font-size:29px}.skill-groups,.project-grid,.cert-grid{grid-template-columns:1fr}.skill-card,.project,.certificate,.research-card{padding:18px}.project-cover{margin:-18px -18px 18px}.project-actions,.research-actions{display:grid;grid-template-columns:1fr}.project-actions>* ,.research-actions>*{width:100%;justify-content:center}.research-card{grid-template-columns:1fr;gap:13px}.research-icon{width:48px;height:48px}.timeline-item{padding-left:29px}.timeline-card{padding:17px}.company-heading{align-items:flex-start}.company-heading img{width:42px;height:42px}.fact-grid{grid-template-columns:1fr}.certificate-preview{width:94vw}.certificate-preview-head{padding:16px;align-items:flex-start}.certificate-preview-head .btn{padding:9px 11px}.certificate-preview-frame{height:65vh}.scroll-cue{display:none}.subpage{padding-top:105px}}
@media(max-width:380px){.hero-metrics{grid-template-columns:1fr}.hero-metrics>div:last-child{grid-column:auto}.hero h1{font-size:34px}.nav-menu{width:calc(100vw - 20px);right:10px}.profile{transform:scale(.5) rotate(2deg)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.orbit,.float-card{animation:none!important}.project,.skill-card,.fact,.profile,.btn{transition:none!important}}

/* ===== Theme Button Contrast Fix ===== */
body.light .btn-primary, body.light .btn-primary:visited { color:#062218 !important; }
body.light .btn-ghost, body.light .btn-ghost:visited { color:#23364d !important; background:transparent; }
body.light .btn-ghost:hover { color:var(--accent) !important; }
body.light .preview-btn { color:#087b59 !important; background:#ffffff; border-color:#cbd7e4; }
body.light .preview-btn:hover { color:#056c4e !important; background:#eef8f4; }
body.light .mini-btn { color:#23364d !important; background:#ffffff; }
body.light .mini-btn:hover { color:var(--accent) !important; }
body.light .admin-tabs button { color:#425268 !important; }
body.light .admin-tabs button.active { color:var(--accent) !important; }
body.light .menu-toggle { color:#23364d !important; }
body.light #topBtn { color:#062218 !important; }
body.light .theme-toggle { color:var(--accent) !important; }

/* Certificate preview is an instant in-page modal; never load the PDF inside it. */
.certificate-preview { width:min(760px,92vw); max-height:90vh; }
.certificate-sheet { width:100%; }
@media(max-width:650px){ .certificate-preview{width:94vw;} .certificate-sheet{padding:22px 16px;border-width:8px;} .certificate-sheet h2{font-size:21px;} .cert-seal{width:52px;height:52px;margin:14px 0;} }

/* ===== Project/research action buttons: text-only style ===== */
.project-actions .project-details,
.research-actions .project-details {
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:0;
  margin-top:0;
  min-height:auto;
  border:0 !important;
  border-radius:0;
  background:transparent !important;
  box-shadow:none !important;
  color:var(--accent) !important;
  font-size:11px;
  font-weight:700;
  transform:none !important;
}
.project-actions .project-details:hover,
.research-actions .project-details:hover {
  color:var(--accent) !important;
  background:transparent !important;
  border:0 !important;
  box-shadow:none !important;
}
.project-actions .project-details i,
.research-actions .project-details i { transition:transform .2s ease; }
.project-actions .project-details:hover i,
.research-actions .project-details:hover i { transform:translateX(4px); }

/* ===== Portfolio polish / responsive cursor ===== */
body.light .nav-menu{background:transparent}
body.light .nav-menu>a{background:transparent}
body.light .nav-cv{background:transparent}
body.light .theme-toggle{background:transparent}
body.light .hero-metrics>div,
body.light .float-card{
  background:#2b3440;
  border-color:#3b4654;
  color:#f3f6f9;
}
body.light .stat{
  background:#fff;
  border-color:#d7e0ea;
  color:#23364d;
  box-shadow:0 8px 24px rgba(28,48,72,.04);
}
body.light .hero-metrics span,
body.light .float-card{color:#d1d9e2}
body.light .stat span{color:#718096}
body.light .hero-metrics strong,
body.light .float-card i{color:var(--accent)}
body.light .language-top{color:#253447}
body.light .language-top strong{color:#078e69}
body.light .language-track{background:#d5dde6}
body.light .skill-card .language-list{color:#253447}
body.light .tags span{color:#44546a;background:#f1f4f8;border-color:#d5dee8}
body.light .skill-note{color:#617087}
body.light .certificate p,body.light .certificate small{color:#536276}
body.light .research-interests span{background:#fff;color:#425166;border-color:#d4deea}
.see-more-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:18px;text-decoration:none}
.see-more-link:hover{gap:10px}
.research-interests .see-more-link{margin-top:0}
.collection-more{grid-column:1/-1;text-align:center}
.cert-grid .collection-more{margin-top:4px}
/* Magnetic CTA buttons */
.magnetic{transform:translate3d(0,0,0);will-change:transform;transition:transform .18s ease,box-shadow .25s ease,border-color .25s ease,color .25s ease,background-color .25s ease}
.magnetic.magnetic-active{transition:box-shadow .25s ease,border-color .25s ease,color .25s ease,background-color .25s ease}
@media(prefers-reduced-motion:reduce){.magnetic,.magnetic.magnetic-active{transform:none!important;transition:none!important}}
@media(max-width:650px){.collection-more{grid-column:1}.hero-metrics{grid-template-columns:1fr}.float-card{font-size:10px}}
/* Header navigation buttons stay clean in both themes. */
.subnav-actions .btn-ghost{background:transparent!important}

/* ===== Requested light-mode polish ===== */
body.light .hero-metrics>div{
  background:#ffffff;
  border-color:#d7e0ea;
  color:#23364d;
  box-shadow:0 8px 24px rgba(28,48,72,.04);
}
body.light .hero-metrics span{color:#718096;}
body.light .stats-grid .stat{
  background:#ffffff;
  border-color:#d7e0ea;
  color:#23364d;
  box-shadow:0 8px 24px rgba(28,48,72,.04);
}
body.light .stats-grid .stat span{color:#718096;}

.research-interests .collection-more{
  width:100%;
  text-align:center;
  margin-top:14px;
}
.research-more .see-more-link,.cert-grid .collection-more .see-more-link{
  margin-top:0;
}

body.light .contact-links a{
  color:#23364d;
  background:#ffffff;
  border-color:#d4deea;
  box-shadow:0 6px 18px rgba(28,48,72,.04);
}
body.light .contact-links a:hover{
  color:#087b59;
  border-color:#079e72;
}

.certificate-preview-frame{
  min-height:420px;
  overflow:auto;
}
.certificate-preview-frame iframe{
  display:block;
  width:100%;
  height:min(72vh,720px);
  border:0;
  background:#fff;
}
.generated-certificate{
  width:min(680px,92%);
  margin:28px auto;
  min-height:390px;
}
@media(max-width:650px){
  .research-interests .collection-more{margin-top:12px;}
  .contact-links{gap:8px;}
  .contact-links a{padding:10px 12px;}
  .certificate-preview-frame{min-height:360px;}
  .certificate-preview-frame iframe{height:65vh;}
  .generated-certificate{min-height:330px;margin:18px auto;}
}

/* ===== Global theme persistence + floating quick navigation ===== */
html.theme-light-preload body{background:#f4f7fb;color:#102033}
.quick-menu{position:fixed;right:22px;bottom:22px;z-index:4500;font-family:inherit}
.quick-menu-toggle{width:48px;height:48px;border:1px solid rgba(32,227,162,.45);border-radius:50%;background:var(--panel);color:var(--accent);display:grid;place-items:center;cursor:pointer;box-shadow:0 14px 35px rgba(0,0,0,.2);transition:.25s}
.quick-menu-toggle:hover{transform:translateY(-3px) scale(1.03);border-color:var(--accent);box-shadow:0 18px 42px rgba(32,227,162,.15)}
.quick-menu-panel{position:absolute;right:0;bottom:60px;width:235px;max-height:min(72vh,520px);overflow-y:auto;padding:9px;border:1px solid var(--line);border-radius:14px;background:rgba(14,21,32,.97);backdrop-filter:blur(18px);box-shadow:0 22px 60px rgba(0,0,0,.28);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(10px) scale(.98);transform-origin:bottom right;transition:.22s}
.quick-menu.open .quick-menu-panel{opacity:1;visibility:visible;pointer-events:auto;transform:none}
.quick-menu-head{display:flex;align-items:center;justify-content:space-between;padding:8px 8px 10px;margin-bottom:3px;border-bottom:1px solid var(--line);font-size:12px}
.quick-menu-head strong{color:var(--text)}
.quick-menu-close{width:28px;height:28px;border:1px solid var(--line);border-radius:7px;background:transparent;color:var(--muted);cursor:pointer}
.quick-menu-close:hover{color:var(--accent);border-color:var(--accent)}
.quick-menu-panel>a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:8px;color:#c8d2df;font-size:11px;transition:.18s}
.quick-menu-panel>a i{width:16px;text-align:center;color:var(--accent)}
.quick-menu-panel>a:hover{background:rgba(32,227,162,.08);color:var(--accent);transform:translateX(2px)}
.quick-menu-panel .quick-whatsapp{border-top:1px solid var(--line);margin-top:5px;padding-top:12px}
body.light .quick-menu-panel{background:rgba(255,255,255,.98);box-shadow:0 22px 60px rgba(20,40,70,.16)}
body.light .quick-menu-panel>a{color:#425268}
body.light .quick-menu-panel>a:hover{color:var(--accent)}
body.light .quick-menu-head strong{color:#17263a}
@media(max-width:650px){.quick-menu{right:15px;bottom:15px}.quick-menu-toggle{width:46px;height:46px}.quick-menu-panel{right:0;bottom:57px;width:min(235px,calc(100vw - 30px));max-height:68vh}}

/* Slight logo size increase — intentionally subtle */
.brand-logo img{width:88px;height:30px}
.footer-logo img{width:84px;height:29px}
@media(max-width:650px){.brand-logo img{width:80px;height:27px}.footer-logo img{width:78px;height:26px}}
html.theme-light-preload{--bg:#f4f7fb;--panel:#ffffff;--panel2:#eef3f8;--text:#102033;--muted:#5d6b7d;--line:#dbe3ed;--accent:#079e72;--accent2:#1689d8}

/* ===== Portfolio UX enhancements ===== */
#scrollProgress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:10000;box-shadow:0 0 12px rgba(32,227,162,.35);pointer-events:none}
#siteTopBtn{position:fixed;right:22px;bottom:82px;width:42px;height:42px;border:1px solid var(--line);border-radius:50%;background:var(--panel);color:var(--accent);display:grid;place-items:center;z-index:4400;opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s;cursor:pointer;box-shadow:0 12px 30px rgba(0,0,0,.16)}
#siteTopBtn.show{opacity:1;visibility:visible;transform:none}
#siteTopBtn:hover{border-color:var(--accent);transform:translateY(-2px)}
#siteToast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,12px);padding:11px 16px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);font-size:12px;box-shadow:0 15px 40px rgba(0,0,0,.2);opacity:0;visibility:hidden;z-index:10001;transition:.22s;pointer-events:none}
#siteToast.show{opacity:1;visibility:visible;transform:translate(-50%,0)}
.collection-tools{display:flex;align-items:center;gap:10px;margin:0 0 24px;padding:10px;border:1px solid var(--line);border-radius:14px;background:color-mix(in srgb,var(--panel) 92%,transparent);box-shadow:0 10px 25px rgba(0,0,0,.05)}
.collection-search{display:flex;align-items:center;gap:9px;flex:1;min-width:180px}.collection-search i{color:var(--accent)}
.collection-search input,.collection-tools select{width:100%;border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:9px;padding:10px 12px;outline:none;font:inherit;font-size:12px}.collection-tools select{width:auto;min-width:140px}.collection-search input:focus,.collection-tools select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(32,227,162,.08)}
.collection-count{font-size:11px;color:var(--muted);white-space:nowrap;padding:0 5px}.collection-tools+* [hidden],.collection-tools~[hidden]{display:none!important}
.project-grid>.project[hidden],.cert-grid>.certificate[hidden],.research-list>.research-card[hidden],.repo-grid>.repo-card[hidden]{display:none!important}
.lightbox{position:fixed;inset:0;z-index:9000;display:grid;place-items:center;opacity:0;visibility:hidden;transition:.2s}.lightbox.open{opacity:1;visibility:visible}.lightbox-backdrop{position:absolute;inset:0;background:rgba(2,7,14,.84);backdrop-filter:blur(8px)}.lightbox-box{position:relative;width:min(92vw,1000px);max-height:88vh;padding:16px;border:1px solid var(--line);border-radius:16px;background:var(--panel);z-index:1;box-shadow:0 30px 90px rgba(0,0,0,.4)}.lightbox-box img{display:block;max-width:100%;max-height:74vh;width:auto;height:auto;margin:auto;border-radius:10px;object-fit:contain;background:#fff}.lightbox-caption{text-align:center;margin-top:10px;color:var(--text);font-size:12px}.lightbox-close{position:absolute;right:10px;top:10px;width:34px;height:34px;border:1px solid var(--line);border-radius:50%;background:rgba(0,0,0,.45);color:#fff;cursor:pointer;z-index:2}.lightbox-close:hover{border-color:var(--accent);color:var(--accent)}
.keyboard-user :focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.image-failed{object-fit:contain!important;padding:20px;background:var(--panel2)}
@media(max-width:650px){#siteTopBtn{right:14px;bottom:72px}.collection-tools{flex-wrap:wrap}.collection-search{flex-basis:100%}.collection-tools select{flex:1;min-width:0}.collection-count{margin-left:auto}.lightbox-box{width:94vw;padding:10px}.lightbox-box img{max-height:70vh}}
@media(prefers-reduced-motion:reduce){#siteTopBtn,#siteToast,.lightbox{transition:none}.collection-tools *{scroll-behavior:auto}}
.certificate-credential{display:inline-flex;align-items:center;gap:5px;margin:8px 8px 0 0;font-size:11px;color:var(--accent);text-decoration:none}.certificate-credential:hover{text-decoration:underline}

/* Collection search/filter improvements */
.collection-tools{display:flex;align-items:center;gap:10px;margin:0 0 24px;padding:11px;border:1px solid var(--line);border-radius:14px;background:color-mix(in srgb,var(--panel) 94%,transparent);box-shadow:0 10px 25px rgba(0,0,0,.05)}
.collection-search{display:flex;align-items:center;gap:9px;flex:1;min-width:220px}.collection-search i{color:var(--accent)}
.collection-search input,.collection-tools select{width:100%;border:1px solid var(--line);background:var(--panel2);color:var(--text);border-radius:9px;padding:10px 12px;outline:none;font:inherit;font-size:12px}.collection-tools select{width:auto;min-width:180px}.collection-search input:focus,.collection-tools select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(32,227,162,.08)}
.collection-reset{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:9px;padding:10px 12px;font:inherit;font-size:11px;font-weight:800;cursor:pointer;white-space:nowrap}.collection-reset:hover{color:var(--text);border-color:var(--accent);transform:translateY(-1px)}
.collection-count{font-size:11px;color:var(--muted);white-space:nowrap;padding:0 5px}.collection-tools+* [hidden],.collection-tools~[hidden]{display:none!important}
.collection-empty{grid-column:1/-1;min-height:180px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;border:1px dashed var(--line);border-radius:14px;color:var(--muted);text-align:center}.collection-empty i{font-size:22px;color:var(--accent)}.collection-empty strong{color:var(--text);font-size:14px}.collection-empty span{font-size:12px}
@media(max-width:650px){.collection-tools{flex-wrap:wrap}.collection-search{flex-basis:100%;min-width:100%}.collection-tools select{flex:1;min-width:0}.collection-reset{flex:0 0 auto}.collection-count{margin-left:auto}}