/* =========================================================
   THEME — edit these variables to restyle everything
   ========================================================= */
:root{
  --bg:        #0a0a0c;   /* page background (clean black) */
  --panel:     #131318;   /* cards / panels                */
  --panel-2:   #1a1a21;   /* hover / nested                */
  --text:      #ececef;   /* main text                     */
  --muted:     #9a9aa6;   /* secondary text                */
  --accent:    #ff7a18;   /* ORANGE — selection/active     */
  --accent-soft:#ff7a1822;
  --accent2:   #36a3ff;   /* BLUE — complementary accent   */
  --accent2-soft:#36a3ff22;
  --link:      #4ea1ff;   /* BLUE — links                  */
  --border:    #26262e;
  --nav-h:     62px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--text);
  font-family:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--link);text-decoration:none;transition:color .15s}
a:hover{color:#8cc2ff;text-decoration:underline}

/* =========================== NAV =========================== */
.nav{
  position:sticky;top:0;z-index:50;height:var(--nav-h);
  display:flex;align-items:center;gap:18px;
  padding:0 28px;
  background:rgba(10,10,12,.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.nav-brand{
  font-weight:800;font-size:18px;color:var(--accent);
  border:2px solid var(--accent);border-radius:8px;
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  flex:none;
}
.nav-brand:hover{text-decoration:none;background:var(--accent-soft)}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;overflow-x:auto}
.nav-links a{
  color:var(--muted);font-size:14px;font-weight:500;
  padding:8px 12px;border-radius:8px;white-space:nowrap;
  position:relative;transition:color .15s,background .15s;
}
.nav-links a:hover{color:var(--text);text-decoration:none;background:var(--panel-2)}
.nav-links a.active{color:var(--accent)}
.nav-links a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
}

/* =========================== LAYOUT =========================== */
main{max-width:920px;margin:0 auto;padding:0 24px}
.section{padding:56px 0 8px;scroll-margin-top:calc(var(--nav-h) + 14px)}
.section-title{
  font-size:26px;font-weight:800;letter-spacing:-.02em;margin-bottom:22px;
  padding-bottom:10px;border-bottom:1px solid var(--border);position:relative;
}
.section-title::before{
  content:"";position:absolute;left:0;bottom:-1px;width:70px;height:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:3px;
}
.section-note{color:var(--muted);font-size:14px;margin:-8px 0 22px}
.section-note code{background:var(--panel-2);padding:2px 6px;border-radius:5px;color:var(--accent)}

/* =========================== HERO =========================== */
.hero{
  display:flex;gap:30px;align-items:center;flex-wrap:wrap;
  padding:52px 0 16px;scroll-margin-top:var(--nav-h);
}
.avatar{
  width:140px;height:140px;border-radius:50%;position:relative;overflow:hidden;
  border:3px solid var(--accent);flex:none;
  background:linear-gradient(135deg,#1c1c24,#2a2a34);
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.avatar img{width:100%;height:100%;object-fit:cover;position:relative;z-index:2}
.avatar-ph{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:42px;font-weight:800;color:var(--accent);z-index:1;
}
.hero-info h1{font-size:40px;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.hero-title{color:var(--muted);font-size:17px;margin:8px 0 16px}
.contact{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px}
.contact li,.contact a{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:14.5px}
.contact a{color:var(--link)}
.contact a:hover{color:#8cc2ff;text-decoration:none}
.ic{width:17px;height:17px;fill:currentColor;flex:none}

/* =========================== ENTRIES =========================== */
.entry{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;
  padding:20px 22px;margin-bottom:16px;transition:border-color .2s,transform .2s;
}
.entry:hover{border-color:var(--accent2);transform:translateY(-2px)}
.entry-head{display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap}
.entry-head h3{font-size:18px;font-weight:700}
.org{color:var(--accent);font-size:14.5px;font-weight:500;margin-top:2px}
.dates{color:var(--muted);font-size:13px;white-space:nowrap;font-variant-numeric:tabular-nums}
.entry ul{margin:12px 0 0;padding-left:18px}
.entry li{margin-bottom:6px;color:#d4d4da}
.entry li::marker{color:var(--accent)}

/* =========================== AWARDS =========================== */
.awards-list{list-style:none;display:grid;gap:10px}
.awards-list li{
  background:var(--panel);border:1px solid var(--border);border-radius:10px;
  padding:13px 16px;display:flex;align-items:center;gap:14px;color:#d4d4da;
}
.award-tag{
  flex:none;min-width:34px;height:28px;padding:0 8px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);font-weight:700;font-size:13px;
}

/* =========================== PROJECTS =========================== */
.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.project{
  background:var(--panel);border:1px solid var(--border);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;transition:border-color .2s,transform .2s;
}
.project:hover{border-color:var(--accent);transform:translateY(-3px)}
.project-img{
  position:relative;aspect-ratio:16/10;background:var(--panel-2);
  display:flex;align-items:center;justify-content:center;
}
.project-img img{width:100%;height:100%;object-fit:cover;position:relative;z-index:2}
.img-ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#5a5a66;font-size:13px;text-align:center;padding:10px;z-index:1}
.project-body{padding:16px 17px;flex:1;display:flex;flex-direction:column}
.project-body h3{font-size:17px;font-weight:700;margin-bottom:7px}
.project-body p{color:#cfcfd6;font-size:14px;flex:1}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}
.tags span{
  background:var(--panel-2);border:1px solid var(--border);color:var(--muted);
  font-size:12px;padding:4px 9px;border-radius:20px;
}

/* =========================== EDUCATION / SKILLS =========================== */
.degree{font-size:16px;margin:12px 0 14px}
.coursework-label{color:var(--muted);font-size:13px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}
.coursework span{border-color:#33333d}
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.skill-group{background:var(--panel);border:1px solid var(--border);border-radius:11px;padding:16px 18px}
.skill-group h4{color:var(--accent2);font-size:14px;margin-bottom:6px}
.skill-group p{color:#cfcfd6;font-size:14px}

/* =========================== FOOTER =========================== */
.foot{
  max-width:920px;margin:48px auto 0;padding:26px 24px 40px;
  border-top:1px solid var(--border);color:var(--muted);font-size:13px;text-align:center;
}

/* =========================== CV DOWNLOAD BUTTON =========================== */
.cv-download{
  display:inline-flex;align-items:center;gap:8px;margin-top:18px;
  background:var(--accent);color:#0a0a0c;font-weight:700;font-size:14.5px;
  padding:10px 18px;border-radius:9px;border:2px solid var(--accent);
  transition:background .15s,color .15s,transform .15s,box-shadow .15s;
}
.cv-download:hover{
  background:transparent;color:var(--accent);text-decoration:none;
  transform:translateY(-2px);box-shadow:0 6px 18px var(--accent-soft);
}
.cv-download .ic{width:18px;height:18px}
.cv-center{text-align:center;margin:4px 0 10px}

/* =========================== ABOUT ME =========================== */
.about{padding:34px 0 6px;scroll-margin-top:calc(var(--nav-h) + 14px)}
.about p{color:#d6d6dc;font-size:15.5px;line-height:1.75;max-width:780px;margin-bottom:14px}

/* =========================== PROJECTS: horizontal slider =========================== */
.projects-slider{
  display:flex;gap:16px;overflow-x:auto;overflow-y:hidden;padding:4px 2px 18px;
  scroll-snap-type:x mandatory;scrollbar-color:var(--accent) var(--panel);
}
.projects-slider::-webkit-scrollbar{height:9px}
.projects-slider::-webkit-scrollbar-thumb{background:var(--accent);border-radius:8px}
.projects-slider::-webkit-scrollbar-track{background:var(--panel);border-radius:8px}
.slide{
  flex:0 0 280px;scroll-snap-align:start;background:var(--panel);
  border:1px solid var(--border);border-radius:12px;overflow:hidden;
  display:flex;flex-direction:column;transition:border-color .2s,transform .2s;
}
.slide:hover{border-color:var(--accent);transform:translateY(-3px)}
.slide-img{position:relative;aspect-ratio:16/10;background:var(--panel-2);display:flex;align-items:center;justify-content:center}
.slide-img img{width:100%;height:100%;object-fit:contain;position:relative;z-index:2;cursor:zoom-in}
.slide-body{padding:14px 15px;flex:1;display:flex;flex-direction:column}
.slide-body h3{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--accent)}
.slide-body a.active{color:var(--accent)}   /* "Read more" turns orange while its project is open */
.slide-body p{font-size:13.5px;color:#cfcfd6;flex:1}
.slide-body a{font-size:13px;font-weight:600;margin-top:10px;align-self:flex-start}

/* =========================== PROJECT DETAIL (deep dive, multi-image gallery) =========================== */
.project-detail{
  margin-top:26px;background:var(--panel);border:1px solid var(--border);
  border-radius:14px;overflow:hidden;scroll-margin-top:calc(var(--nav-h) + 14px);
  display:none;                       /* hidden until its card's "Read more" is clicked */
}
.project-detail.open{display:block;animation:detailIn .35s ease}
@keyframes detailIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.project-detail .project-body h3{color:var(--accent)}   /* orange detail title */
.project-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:2px;background:var(--border)}
.project-gallery figure{margin:0;background:var(--panel);display:flex;flex-direction:column}
.g-img{position:relative;aspect-ratio:4/3;background:var(--panel-2);display:flex;align-items:center;justify-content:center}
.g-img img{width:100%;height:100%;object-fit:contain;position:relative;z-index:2;cursor:zoom-in}
.project-gallery figcaption{padding:9px 10px;font-size:12.5px;color:var(--muted);text-align:center}
.project-detail .project-body{padding:20px 22px;display:block}
.project-detail .project-body p{flex:none;margin-bottom:10px}
.project-detail .project-body ul{margin:2px 0 12px;padding-left:18px}
.project-detail .project-body li{color:#d4d4da;margin-bottom:6px}
.project-detail .project-body li::marker{color:var(--accent)}
.project-meta{color:var(--muted);font-size:13px;margin:-2px 0 12px}
.ref{font-size:13px;color:var(--muted);margin-top:14px;border-top:1px solid var(--border);padding-top:12px;line-height:1.55}
/* embedded animation (e.g. an .mp4) in a project detail */
.project-video{background:#000;display:flex;justify-content:center}
.project-video video{width:100%;max-height:520px;display:block;background:#000}

/* =========================== LIGHTBOX (click an image to enlarge) =========================== */
#lightbox{
  position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:100;
  display:none;align-items:center;justify-content:center;flex-direction:column;
  padding:28px;cursor:zoom-out;
}
#lightbox.open{display:flex}
#lightbox img{
  max-width:94vw;max-height:84vh;object-fit:contain;border-radius:8px;
  background:#0a0a0c;box-shadow:0 14px 60px rgba(0,0,0,.7);
}
#lightbox .lb-cap{color:#dcdce2;margin-top:14px;font-size:14px;text-align:center}
#lightbox .lb-close{
  position:absolute;top:12px;right:24px;font-size:36px;line-height:1;
  color:#fff;cursor:pointer;opacity:.8;
}
#lightbox .lb-close:hover{opacity:1}

/* =========================== SCROLL REVEAL (fade in/out on scroll) =========================== */
html.reveal .section-title,
html.reveal .section-note,
html.reveal .about p,
html.reveal .cv-center,
html.reveal .entry,
html.reveal .awards-list li,
html.reveal .slide,
html.reveal .skill-group,
html.reveal .degree,
html.reveal .coursework-label,
html.reveal .coursework,
html.reveal .hero-info > *{
  opacity:0;transform:translateY(22px);
  transition:opacity .55s ease, transform .55s ease;
  will-change:opacity,transform;
}
/* !important so it always beats the more-specific hidden selectors (e.g. .awards-list li) */
html.reveal .is-in{opacity:1 !important;transform:none !important}
@media (prefers-reduced-motion:reduce){
  html.reveal .section-title,html.reveal .section-note,html.reveal .about p,
  html.reveal .cv-center,html.reveal .entry,
  html.reveal .awards-list li,html.reveal .slide,
  html.reveal .skill-group,html.reveal .degree,html.reveal .coursework-label,
  html.reveal .coursework,html.reveal .hero-info>*{opacity:1;transform:none;transition:none}
}

/* =========================== RESPONSIVE =========================== */
@media (max-width:680px){
  .nav{flex-direction:column;height:auto;gap:8px;padding:10px 14px}
  .nav-links{justify-content:center}
  .section{scroll-margin-top:130px}
  .hero{justify-content:center;text-align:center}
  .contact{justify-content:center}
  .hero-info h1{font-size:32px}
  .project-gallery{grid-template-columns:1fr}
}