:root{--bg:#f7f9fc;--surface:#fff;--surface2:#eef3f9;--text:#152238;--muted:#667085;--primary:#1769e0;--primary2:#0b4ea2;--line:#dce4ee;--dark:#0b172a;--shadow:0 18px 50px rgba(18,42,76,.10);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(1120px,92%);margin:auto}.section{padding:96px 0}.section-tight{padding:28px 0}.alt{background:#eef4fa}.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(220,228,238,.8)}.navbar{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{font-weight:800;font-size:1.08rem;display:flex;align-items:center;gap:10px}.brand span{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:var(--dark);color:#fff}.nav-links{display:flex;align-items:center;gap:26px;font-size:.94rem;color:#4b5b70}.nav-links a:hover{color:var(--primary)}.nav-cv{padding:10px 15px;border:1px solid var(--primary);border-radius:10px;color:var(--primary)!important;font-weight:700}.menu-toggle{display:none;border:0;background:none;font-size:1.5rem}.progress-bar{position:fixed;top:0;left:0;height:3px;background:var(--primary);width:0;z-index:100}.hero{padding-top:80px;background:linear-gradient(135deg,#f8fbff 0%,#edf4fc 100%)}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:60px;min-height:610px}.eyebrow{letter-spacing:.15em;font-size:.76rem;font-weight:800;color:var(--primary);margin:0 0 12px}.hero h1{font-size:clamp(3rem,6vw,5.5rem);line-height:1.02;letter-spacing:-.055em;margin:0 0 24px;max-width:850px}.hero h1 span{color:var(--primary)}.hero-text{font-size:1.12rem;color:var(--muted);max-width:680px}.hero-actions{display:flex;align-items:center;gap:18px;flex-wrap:wrap;margin:30px 0}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:13px 19px;font-weight:750;border:1px solid transparent;cursor:pointer;transition:.2s}.btn.primary{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(23,105,224,.22)}.btn.primary:hover{background:var(--primary2);transform:translateY(-2px)}.btn.secondary{background:#fff;border-color:var(--line);color:var(--text)}.btn.small{padding:10px 14px;font-size:.88rem}.text-link{font-weight:700;color:var(--text)}.hero-meta{display:flex;gap:22px;flex-wrap:wrap;color:#53657a;font-size:.9rem}.hero-photo{display:flex;justify-content:center;position:relative}.photo-ring{width:min(390px,80vw);aspect-ratio:1/1;border-radius:50%;padding:10px;background:linear-gradient(145deg,#fff,#dcecff);box-shadow:var(--shadow)}.photo-ring img{width:100%;height:100%;object-fit:cover;border-radius:50%;object-position:center top}.floating-card{position:absolute;right:4%;bottom:4%;background:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 18px;box-shadow:var(--shadow);display:flex;flex-direction:column}.floating-card strong{font-size:1.35rem;color:var(--primary)}.floating-card span{font-size:.76rem;color:var(--muted)}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.stat-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 10px 30px rgba(18,42,76,.05)}.stat-card strong{display:block;font-size:1.8rem;color:var(--primary)}.stat-card span{color:var(--muted);font-size:.9rem}.two-col{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.section-heading h2{font-size:clamp(2rem,4vw,3.5rem);line-height:1.08;letter-spacing:-.04em;margin:0 0 18px}.section-heading>p:last-child,.about-copy p{color:var(--muted)}.center{text-align:center;max-width:720px;margin:0 auto 46px}.about-copy{font-size:1.03rem}.about-links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:30px}.outline-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:16px;font-weight:750}.outline-card span{display:block;font-size:.76rem;color:var(--muted);font-weight:500;margin-top:5px}.skills-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.skill-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;transition:.2s}.skill-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.skill-card.featured{border-color:#9bc0f6}.skill-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#e8f1ff;color:var(--primary);font-weight:900;font-size:1.15rem;margin-bottom:15px}.skill-card h3{margin:0 0 5px;font-size:1rem}.skill-card p{margin:0;color:var(--muted);font-size:.86rem}.tools-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.tools-strip span,.tag-list span{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 11px;font-size:.78rem;color:#4c5e73}.projects-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}.project-card{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 12px 35px rgba(18,42,76,.07)}.project-image{height:290px;background:#dfe8f3;overflow:hidden}.project-image img{width:100%;height:100%;object-fit:cover;object-position:top}.project-body{padding:25px}.project-type{font-size:.7rem;letter-spacing:.13em;font-weight:850;color:var(--primary)}.project-type.academic{color:#6b4fd3}.project-body h3{font-size:1.35rem;line-height:1.2;margin:9px 0 10px}.project-body p{color:var(--muted);font-size:.9rem}.tag-list{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0}.project-actions{display:flex;align-items:center;gap:18px}.github-link{font-weight:750;color:var(--primary)}.timeline{border-left:2px solid #cbd9ea;padding-left:28px}.timeline-item{position:relative;margin-bottom:30px}.timeline-item .dot{position:absolute;width:13px;height:13px;border-radius:50%;background:var(--primary);left:-36px;top:8px;box-shadow:0 0 0 5px #eef4fa}.date{font-size:.76rem;color:var(--primary);font-weight:800;letter-spacing:.08em}.timeline-item h3{margin:5px 0}.timeline-item p{margin:0;color:var(--muted)}.timeline-item strong{font-size:.88rem}.strengths{display:grid;gap:18px}.strengths>div{padding:20px 0;border-bottom:1px solid var(--line)}.strengths strong{color:var(--primary);font-size:.8rem}.strengths h3{margin:5px 0}.strengths p{margin:0;color:var(--muted)}.contact-section{background:var(--dark);color:#fff}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px}.contact-copy .eyebrow{color:#8ebcff}.contact-copy h2{font-size:clamp(2.3rem,5vw,4rem);line-height:1.05;letter-spacing:-.04em;margin:0 0 20px}.contact-copy>p:not(.eyebrow){color:#b9c7d9}.contact-details{display:grid;gap:9px;margin:26px 0;color:#e2eaf5}.contact-details a:hover{color:#8ebcff}.socials{display:flex;gap:10px}.socials a{border:1px solid #34465f;padding:9px 13px;border-radius:10px}.contact-form{background:#fff;color:var(--text);padding:28px;border-radius:22px}.contact-form label{display:grid;gap:7px;font-weight:700;font-size:.86rem;margin-bottom:15px}.contact-form input,.contact-form textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 13px;font:inherit;outline:none}.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,105,224,.1)}.form-note{font-size:.76rem;color:var(--muted)}.footer{background:#071121;color:#9dafc4}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:22px 0;font-size:.82rem}.back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border-radius:50%;border:0;background:var(--primary);color:#fff;font-size:1.1rem;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s}.back-top.show{opacity:1;pointer-events:auto}.reveal{opacity:0;transform:translateY(22px);transition:.7s ease}.reveal.visible{opacity:1;transform:none}@media(max-width:900px){.hero-grid,.two-col,.contact-grid{grid-template-columns:1fr}.hero{padding-top:45px}.hero-photo{order:-1}.photo-ring{width:280px}.stats-grid{grid-template-columns:repeat(2,1fr)}.skills-grid{grid-template-columns:repeat(2,1fr)}.about-links{grid-template-columns:1fr}.projects-grid{grid-template-columns:1fr}.nav-links{position:absolute;left:4%;right:4%;top:68px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;display:none;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-toggle{display:block}}@media(max-width:560px){.section{padding:70px 0}.hero h1{font-size:3rem}.stats-grid,.skills-grid{grid-template-columns:1fr}.hero-actions{align-items:stretch;flex-direction:column}.hero-actions .btn{width:100%}.floating-card{right:0}.footer-inner{flex-direction:column;align-items:flex-start}}


/* Portfolio alterations */
.profile-name{margin:18px 0 0;text-align:center;font-size:1.7rem;letter-spacing:-.02em;color:var(--text)}
.social-links{display:flex;gap:12px;margin-top:24px;align-items:center}
.social-icon{width:48px;height:48px;border:1px solid var(--line);border-radius:14px;background:#fff;display:grid;place-items:center;color:var(--text);transition:.2s;box-shadow:0 8px 20px rgba(18,42,76,.05)}
.social-icon:hover{color:var(--primary);border-color:#9bc0f6;transform:translateY(-3px);box-shadow:var(--shadow)}
.social-icon svg{width:23px;height:23px;fill:currentColor}
.technical-skills-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.technical-skill-column{background:#fff;border:1px solid var(--line);border-radius:20px;padding:26px;min-height:270px;box-shadow:0 10px 30px rgba(18,42,76,.05);position:relative}
.technical-skill-column:before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;background:var(--primary);border-radius:0 4px 4px 0}
.secondary-skill:before{background:#6b4fd3}
.skill-column-icon{width:46px;height:46px;border-radius:13px;display:grid;place-items:center;background:#e8f1ff;color:var(--primary);font-weight:900;font-size:1.15rem;margin-bottom:16px}
.secondary-skill .skill-column-icon{background:#f0ebff;color:#6b4fd3}
.technical-skill-column h3{font-size:1.05rem;margin:0 0 18px;line-height:1.25}
.technical-skill-column ul{list-style:none;padding:0;margin:0;display:grid;gap:12px}
.technical-skill-column li{padding:11px 12px;border:1px solid var(--line);border-radius:11px;color:#4c5e73;background:#f9fbfe;font-size:.9rem}
@media(max-width:1000px){.technical-skills-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.technical-skills-grid{grid-template-columns:1fr}.profile-name{font-size:1.5rem}}

/* Portfolio updates */
.profile-name{margin:12px 0 0;font-size:1.45rem;font-weight:800;text-align:center;}
.project-category{margin:48px 0;}
.project-category h2{margin-bottom:20px;}
.project-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;}
.project-card{overflow:hidden;border:1px solid rgba(127,127,127,.2);border-radius:18px;background:var(--card-bg,#fff);box-shadow:0 10px 30px rgba(0,0,0,.06);}
.project-card img{width:100%;display:block;aspect-ratio:16/9;object-fit:cover;}
.project-card-body{padding:22px;}
.project-type{font-size:.82rem;font-weight:700;opacity:.75;text-transform:uppercase;letter-spacing:.04em;}
.project-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px;}
.cert-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.cert-card{padding:24px;border:1px solid rgba(127,127,127,.2);border-radius:18px;background:var(--card-bg,#fff);box-shadow:0 10px 28px rgba(0,0,0,.05);}
.cert-icon{font-size:1.6rem;margin-bottom:14px;}
@media (max-width:900px){.cert-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:600px){.cert-grid{grid-template-columns:1fr;}.project-category{margin:32px 0;}}

/* E-Voting project walkthrough */
.evoting-overview{margin:42px 0 70px;align-items:center}
.project-highlight{border:1px solid var(--line);border-radius:22px;overflow:hidden;background:#0b172a;box-shadow:var(--shadow)}
.project-highlight img{width:100%;height:auto;display:block}
.evoting-screens{margin-top:20px}
.screen-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;margin-top:32px}
.screen-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;box-shadow:0 12px 35px rgba(18,42,76,.07);transition:transform .2s,box-shadow .2s}
.screen-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.screen-card img{width:100%;height:310px;object-fit:cover;object-position:top;background:#0b172a}
.screen-number{position:absolute;z-index:2;top:14px;left:14px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:rgba(11,23,42,.88);color:#fff;font-weight:800;border:1px solid rgba(255,255,255,.2)}
.screen-caption{padding:18px 20px 20px}
.screen-caption h3{margin:0 0 6px;font-size:1.12rem}
.screen-caption p{margin:0;color:var(--muted);font-size:.88rem}
@media(max-width:800px){
  .screen-grid{grid-template-columns:1fr}
  .screen-card img{height:auto;max-height:420px}
  .evoting-overview{grid-template-columns:1fr}
}

/* Light / Dark mode */
:root{
  color-scheme: light;
  --card-bg:#fff;
  --input-bg:#fff;
  --hero-bg:linear-gradient(135deg,#f8fbff 0%,#edf4fc 100%);
}
body{transition:background-color .25s ease,color .25s ease}
.hero{background:var(--hero-bg)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:8px 12px;border:1px solid var(--line);border-radius:11px;background:var(--surface);color:var(--text);font:inherit;font-size:.84rem;font-weight:750;cursor:pointer;transition:.2s;white-space:nowrap}
.theme-toggle:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-1px)}
.theme-icon{font-size:1rem;line-height:1}
.simple-header{min-height:72px;display:flex;align-items:center;justify-content:space-between}
.nav-wrap{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.nav{display:flex;align-items:center;gap:22px;font-size:.94rem;color:#4b5b70}
.nav a:hover{color:var(--primary)}
.nav .theme-toggle{margin-left:2px}

/* Dark theme */
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#080d16;
  --surface:#111927;
  --surface2:#182233;
  --text:#eef4ff;
  --muted:#a8b5c8;
  --line:#2a394e;
  --dark:#020712;
  --shadow:0 18px 50px rgba(0,0,0,.35);
  --card-bg:#111927;
  --input-bg:#0d1522;
  --hero-bg:linear-gradient(135deg,#0d1728 0%,#101b2b 100%);
}
html[data-theme="dark"] body{background:var(--bg);color:var(--text)}
html[data-theme="dark"] .site-header{background:rgba(8,13,22,.9);border-bottom-color:rgba(42,57,78,.85)}
html[data-theme="dark"] .nav-links,
html[data-theme="dark"] .nav{color:#c5d0df}
html[data-theme="dark"] .nav-links a:hover,
html[data-theme="dark"] .nav a:hover{color:#7fb1ff}
html[data-theme="dark"] .btn.secondary,
html[data-theme="dark"] .floating-card,
html[data-theme="dark"] .stat-card,
html[data-theme="dark"] .skill-card,
html[data-theme="dark"] .technical-skill-column,
html[data-theme="dark"] .project-card,
html[data-theme="dark"] .outline-card,
html[data-theme="dark"] .social-icon,
html[data-theme="dark"] .contact-form,
html[data-theme="dark"] .cert-card,
html[data-theme="dark"] .screen-card{background:var(--surface);color:var(--text);border-color:var(--line)}
html[data-theme="dark"] .alt{background:#0d1522}
html[data-theme="dark"] .tools-strip span,
html[data-theme="dark"] .tag-list span,
html[data-theme="dark"] .technical-skill-column li{background:#0d1522;color:#c5d0df;border-color:var(--line)}
html[data-theme="dark"] .skill-icon{background:#142b4c}
html[data-theme="dark"] .secondary-skill .skill-icon{background:#2b2049}
html[data-theme="dark"] .timeline{border-color:#35465d}
html[data-theme="dark"] .timeline-item .dot{box-shadow:0 0 0 5px #172234}
html[data-theme="dark"] .project-image{background:#121d2c}
html[data-theme="dark"] .project-highlight{background:#08111e}
html[data-theme="dark"] .contact-section{background:#050b14}
html[data-theme="dark"] .contact-form input,
html[data-theme="dark"] .contact-form textarea{background:var(--input-bg);color:var(--text);border-color:var(--line)}
html[data-theme="dark"] .footer{background:#030811}
html[data-theme="dark"] .photo-ring{background:linear-gradient(145deg,#26364d,#162337)}
html[data-theme="dark"] .nav-cv{color:#7fb1ff!important;border-color:#4b8ff5}
html[data-theme="dark"] .screen-number{background:rgba(2,7,18,.9)}

@media(max-width:900px){
  .nav{flex-wrap:wrap}
  .nav .theme-toggle{margin-left:0}
}
@media(max-width:700px){
  .nav-wrap{align-items:flex-start;padding:14px 0;flex-direction:column}
  .nav{width:100%;gap:12px;flex-wrap:wrap}
  .theme-toggle{margin-left:auto}
}
@media(max-width:900px){
  .hero-photo{display:flex;flex-direction:column;align-items:center}
  .profile-name{order:-1;margin-bottom:14px}
}
.hero-photo{flex-direction:column;align-items:center}
.profile-name{order:0}

/* Project category folders and analytics project details */
.page-section{padding:90px 0;min-height:calc(100vh - 72px)}
.project-folders{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;margin-top:42px}
.folder-card{position:relative;display:block;padding:34px 30px 30px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(145deg,#ffffff,#f3f7fc);box-shadow:0 16px 40px rgba(18,42,76,.09);overflow:hidden;transition:transform .2s,box-shadow .2s,border-color .2s;color:var(--text)}
.folder-card:hover{transform:translateY(-6px);box-shadow:0 22px 55px rgba(18,42,76,.14);border-color:#9bc0f6}
.folder-tab{position:absolute;top:0;left:26px;width:110px;height:13px;border-radius:0 0 9px 9px;background:var(--primary)}
.academic-folder .folder-tab{background:#6b4fd3}
.folder-icon{width:66px;height:66px;border-radius:18px;display:grid;place-items:center;background:#e8f1ff;color:var(--primary);font-size:1.65rem;margin-bottom:22px}
.academic-folder .folder-icon{background:#f0ebff;color:#6b4fd3}
.folder-label{font-size:.72rem;letter-spacing:.14em;font-weight:850;color:var(--primary)}
.academic-folder .folder-label{color:#6b4fd3}
.folder-card h2,.folder-card h3{margin:8px 0 10px;line-height:1.18;font-size:1.45rem}
.folder-card p{margin:0 0 20px;color:var(--muted);font-size:.92rem}
.folder-link{font-weight:800;color:var(--primary)}
.academic-folder .folder-link{color:#6b4fd3}
.project-folders-inner .folder-card{min-height:245px}
.mini-folder h2{font-size:1.25rem}
.back-projects{display:inline-flex;margin-top:34px;font-weight:800;color:var(--primary)}
.analytics-highlight{margin:36px 0 48px;border-radius:22px}
.analytics-highlight img{max-height:none}
.project-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:start}
.project-detail-grid>div{padding:26px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:0 10px 30px rgba(18,42,76,.05)}
.project-detail-grid h2,.detail-columns h2{margin-top:0}
.kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.kpi-grid div{padding:14px;border:1px solid var(--line);border-radius:13px;background:var(--surface2)}
.kpi-grid strong{display:block;font-size:1.25rem;color:var(--primary)}
.kpi-grid span{display:block;color:var(--muted);font-size:.75rem;margin-top:2px}
.detail-title{margin:62px 0 20px}
.analytics-screens{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:start}
.analytics-screens article{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--surface);box-shadow:0 12px 35px rgba(18,42,76,.07)}
.analytics-screens img{width:100%;height:auto;display:block;background:#eef3f9}
.analytics-screens h3{margin:18px 20px 7px;font-size:1.05rem}
.analytics-screens p{margin:0 20px 20px;color:var(--muted);font-size:.88rem}
.detail-columns{margin-top:52px;align-items:start}
.detail-columns>div{padding:26px;border:1px solid var(--line);border-radius:20px;background:var(--surface)}
.detail-columns li{margin-bottom:8px;color:var(--muted)}
html[data-theme="dark"] .folder-card{background:linear-gradient(145deg,#111927,#0d1522);border-color:var(--line);box-shadow:0 18px 45px rgba(0,0,0,.25)}
html[data-theme="dark"] .folder-card:hover{border-color:#4b8ff5}
html[data-theme="dark"] .folder-icon{background:#142b4c}
html[data-theme="dark"] .academic-folder .folder-icon{background:#2b2049}
html[data-theme="dark"] .project-detail-grid>div,html[data-theme="dark"] .analytics-screens article,html[data-theme="dark"] .detail-columns>div{background:var(--surface);border-color:var(--line)}
html[data-theme="dark"] .kpi-grid div{background:#0d1522;border-color:var(--line)}
html[data-theme="dark"] .analytics-screens img{background:#0d1522}
@media(max-width:1000px){.analytics-screens{grid-template-columns:1fr 1fr}}
@media(max-width:800px){.project-folders,.project-detail-grid,.analytics-screens{grid-template-columns:1fr}.page-section{padding:65px 0}.folder-card{padding:30px 24px 26px}}
html[data-theme="dark"] .nav-links{background:var(--surface);border-color:var(--line)}
/* Keep the profile name above the photo on the home page */
.hero-photo .profile-name{order:-1;margin:0 0 14px}