:root{
  --bg:#0b1120;
  --surface:#ffffff;
  --surface-alt:#f5f7fb;
  --text:#0f172a;
  --text-soft:#475569;
  --line:#e2e8f0;
  --accent:#2563eb;
  --accent-soft:#dbeafe;
  --max:1180px;
  --shadow:0 18px 45px rgba(15,23,42,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--surface);
  line-height:1.6;
}

img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
.container{width:min(var(--max), calc(100% - 2rem)); margin:0 auto}

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:blur(18px);
  background:rgba(11,17,32,.72);
  border-bottom:1px solid rgba(255,255,255,.08);
}

.nav-shell{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:76px;
  gap:1rem;
}

.brand{
  display:flex;
  align-items:center;
  gap:.85rem;
  color:#fff;
  font-weight:700;
  min-width:0;
}

.brand-mark{
  width:42px;
  height:42px;
  border-radius:12px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg, #60a5fa, #2563eb);
  color:#fff;
  box-shadow:0 10px 30px rgba(37,99,235,.35);
  flex-shrink:0;
}

.brand-text{
  letter-spacing:-0.02em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.nav-links{
  display:flex;
  align-items:center;
  gap:1.25rem;
  color:rgba(255,255,255,.88);
}

.nav-links a{transition:opacity .2s ease}
.nav-links a:hover{opacity:.75}

.menu-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:12px;
  background:rgba(255,255,255,.06);
  cursor:pointer;
  padding:0;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:4px;
}

.menu-toggle span{
  display:block;
  width:18px;
  height:2px;
  background:#fff;
  border-radius:999px;
}

.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:0 1.15rem;
  border-radius:999px;
  background:var(--accent);
  color:#fff;
  font-weight:600;
  box-shadow:0 16px 30px rgba(37,99,235,.25);
  transition:transform .2s ease, opacity .2s ease;
}

.button:hover{transform:translateY(-1px)}

.button-secondary{
  background:#fff;
  color:var(--text);
  box-shadow:0 10px 25px rgba(15,23,42,.08);
}

.button-small{min-height:42px}

.hero{
  position:relative;
  color:#fff;
  background:
    linear-gradient(125deg, rgba(8,15,32,.92), rgba(12,22,44,.88)),
    url('assets/hero-bg.jpg') center/cover no-repeat;
  overflow:hidden;
}

.hero-backdrop{
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at top left, rgba(96,165,250,.20), transparent 28%),
    radial-gradient(circle at 80% 30%, rgba(37,99,235,.25), transparent 22%);
}

.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:3rem;
  padding:6.5rem 0 5.5rem;
  align-items:center;
}

.eyebrow{
  margin:0 0 1rem;
  color:#bfdbfe;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:.12em;
  font-size:.8rem;
}

.hero h1{
  margin:0;
  font-size:clamp(2.5rem, 5vw, 4.8rem);
  line-height:1.02;
  letter-spacing:-0.05em;
  max-width:12ch;
}

.hero-text{
  max-width:62ch;
  color:rgba(255,255,255,.82);
  font-size:1.05rem;
  margin:1.4rem 0 0;
}

.hero-actions{
  display:flex;
  gap:.9rem;
  flex-wrap:wrap;
  margin:2rem 0 2.2rem;
}

.metrics{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1rem;
}

.metric-card{
  border:1px solid rgba(255,255,255,.12);
  border-radius:22px;
  padding:1.1rem 1rem;
  background:rgba(255,255,255,.06);
  backdrop-filter:blur(14px);
}

.metric-value{
  display:block;
  font-size:1.55rem;
  font-weight:800;
  letter-spacing:-0.04em;
}

.metric-label{
  display:block;
  margin-top:.4rem;
  color:rgba(255,255,255,.72);
  font-size:.93rem;
}

.hero-visual{
  position:relative;
  display:flex;
  justify-content:flex-end;
  align-items:flex-end;
  min-height:560px;
}

.photo-frame{
  width:min(100%, 430px);
  border-radius:34px;
  overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  box-shadow:0 30px 60px rgba(0,0,0,.28);
}

.floating-card{
  position:absolute;
  background:#ffffff;
  color:var(--text);
  border-radius:24px;
  box-shadow:0 22px 50px rgba(15,23,42,.18);
}

.floating-card-stack{
  right:-18px;
  bottom:28px;
  width:min(340px, 86%);
  padding:1rem 1.1rem;
  border:1px solid rgba(226,232,240,.95);
}

.floating-label{
  margin:0 0 .35rem;
  font-size:.82rem;
  color:var(--text-soft);
  text-transform:uppercase;
  letter-spacing:.08em;
  font-weight:700;
}

.floating-text{
  margin:0;
  font-weight:700;
  line-height:1.45;
  font-size:1rem;
}

.section{padding:5.5rem 0}
.section-alt{background:var(--surface-alt)}

.section-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:2rem;
  align-items:start;
}

.section-kicker{
  margin:0 0 .6rem;
  color:var(--accent);
  text-transform:uppercase;
  letter-spacing:.12em;
  font-weight:700;
  font-size:.8rem;
}

.section-title{
  margin:0;
  font-size:clamp(2rem, 3vw, 3rem);
  line-height:1.1;
  letter-spacing:-0.04em;
}

.section-text{
  margin:1rem 0 0;
  color:var(--text-soft);
  max-width:66ch;
}

.profile-panel{
  background:#fff;
  border:1px solid var(--line);
  border-radius:28px;
  overflow:hidden;
  box-shadow:0 14px 35px rgba(15,23,42,.06);
}

.profile-panel img{
  width:100%;
  aspect-ratio:1/1;
  object-fit:cover;
}

.profile-details{padding:1.5rem}

.profile-details h3{
  margin:.1rem 0 1rem;
  font-size:1.15rem;
}

.profile-details ul{
  margin:0;
  padding-left:1rem;
  color:var(--text-soft);
}

.profile-details li + li{margin-top:.55rem}

.section-header{
  display:flex;
  justify-content:space-between;
  gap:1rem;
  align-items:end;
  margin-bottom:1.8rem;
}

.chip-row{
  display:flex;
  gap:.55rem;
  flex-wrap:wrap;
}

.chip{
  border:1px solid var(--line);
  background:#fff;
  color:var(--text);
  min-height:40px;
  border-radius:999px;
  padding:0 .9rem;
  font-weight:600;
  cursor:pointer;
  transition:all .2s ease;
}

.chip.active{
  background:var(--text);
  border-color:var(--text);
  color:#fff;
}

.project-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:1.25rem;
}

.project-card{
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  padding:1.4rem;
  min-height:100%;
  box-shadow:0 10px 25px rgba(15,23,42,.04);
  transition:transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}

.project-card:hover{
  transform:translateY(-3px);
  box-shadow:0 20px 35px rgba(15,23,42,.08);
}

.project-card.hidden{display:none}

.project-badge{
  display:inline-flex;
  align-self:flex-start;
  background:var(--accent-soft);
  color:var(--accent);
  font-weight:700;
  border-radius:999px;
  padding:.35rem .7rem;
  font-size:.8rem;
}

.project-card h3{
  margin:.85rem 0 .65rem;
  font-size:1.32rem;
  line-height:1.2;
  letter-spacing:-0.03em;
}

.project-card p{
  margin:0;
  color:var(--text-soft);
}

.project-points{
  margin:1rem 0 1.2rem;
  padding-left:1rem;
  color:var(--text-soft);
}

.project-links{
  display:flex;
  gap:.9rem;
  flex-wrap:wrap;
  margin-top:auto;
}

.project-links a{
  color:var(--accent);
  font-weight:700;
}

.timeline{
  display:grid;
  gap:1rem;
}

.timeline-item{
  display:grid;
  grid-template-columns:140px 1fr;
  gap:1rem;
  align-items:start;
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  padding:1.15rem 1.25rem;
}

.timeline-year{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:52px;
  border-radius:999px;
  background:var(--surface-alt);
  color:var(--accent);
  font-weight:800;
  font-size:1.05rem;
  padding:0 1rem;
}

.timeline-item h3{
  margin:.2rem 0 .45rem;
  font-size:1.1rem;
  line-height:1.3;
}

.timeline-item p{
  margin:0;
  color:var(--text-soft);
}

.two-column-cards{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:1.25rem;
}

.info-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:28px;
  padding:1.6rem;
}

.skill-columns{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:1rem;
  margin-top:1.2rem;
}

.skill-columns ul{
  margin:0;
  padding-left:1rem;
  color:var(--text-soft);
}

.skill-columns li + li{margin-top:.45rem}

.education-list{
  display:grid;
  gap:1rem;
  margin-top:1.2rem;
}

.education-list h3{
  margin:0;
  font-size:1rem;
}

.education-list p{
  margin:.2rem 0 0;
  color:var(--text-soft);
}

.contact-section{
  background:
    radial-gradient(circle at top left, rgba(37,99,235,.08), transparent 25%),
    linear-gradient(180deg, #f8fbff, #eef4ff);
}

.contact-shell{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:1.25rem;
  align-items:center;
}

.contact-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:26px;
  padding:1.4rem;
  display:grid;
  gap:.85rem;
  box-shadow:var(--shadow);
}

.contact-card a{
  color:var(--accent);
  font-weight:700;
  word-break:break-word;
}

.site-footer{
  background:var(--bg);
  color:rgba(255,255,255,.75);
}

.footer-shell{
  min-height:74px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}

.footer-shell a{color:#fff}

@media (max-width: 980px){
  .hero-grid,
  .section-grid,
  .contact-shell,
  .two-column-cards,
  .project-grid{
    grid-template-columns:1fr;
  }

  .hero h1{max-width:13ch}
  .hero-visual{
    order:-1;
    justify-content:center;
    min-height:auto;
    padding-bottom:5.5rem;
  }

  .photo-frame{
    width:min(100%, 430px);
  }

  .floating-card-stack{
    right:50%;
    transform:translateX(50%);
    bottom:14px;
    width:min(360px, calc(100% - 1.5rem));
  }

  .metrics{grid-template-columns:1fr}
  .section-header{align-items:start; flex-direction:column}
}

@media (max-width: 760px){
  .nav-links{
    display:none;
    position:absolute;
    top:76px;
    left:1rem;
    right:1rem;
    background:rgba(11,17,32,.97);
    border:1px solid rgba(255,255,255,.09);
    border-radius:18px;
    padding:1rem;
    flex-direction:column;
    align-items:flex-start;
    gap:.9rem;
    box-shadow:0 18px 40px rgba(0,0,0,.28);
  }

  .nav-links.open{display:flex}
  .menu-toggle{display:flex}
  .timeline-item{grid-template-columns:1fr}
  .skill-columns{grid-template-columns:1fr}
  .hero-grid{padding:5.5rem 0 4.5rem}

  .brand{
    max-width:calc(100% - 60px);
  }

  .brand-text{
    font-size:.98rem;
  }

  .floating-card-stack{
    padding:.95rem 1rem;
  }

  .floating-text{
    font-size:.96rem;
    line-height:1.4;
  }
}