*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}

:root{
  --bg:#ffffff;
  --bg-alt:#f5f5f5;
  --surface:#fafafa;
  --text:#1a1a1a;
  --text-mid:#6b6b6b;
  --text-muted:#a0a0a0;
  --text-ghost:#d0d0d0;
  --accent:#4f5dff;
  --accent-soft:rgba(79,93,255,.1);
  --red:#d35d4e;
  --green:#3db06e;
  --mono:'JetBrains Mono','Fira Code','SF Mono',monospace;
  --sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;
  --radius:6px;
  --transition:.3s cubic-bezier(.4,0,.2,1);
}

html{scroll-behavior:smooth;font-size:16px}
body{
  font-family:var(--sans);color:var(--text);background:var(--bg);
  line-height:1.7;-webkit-font-smoothing:antialiased;
  background-image:radial-gradient(circle,#ddd .5px,transparent .5px);
  background-size:24px 24px;
  padding-bottom:40px;
}

.container{max-width:1200px;margin:0 auto;padding:0 48px}

/* ── Nav ── */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color var(--transition);
}
.nav.scrolled{border-bottom-color:#d0d0d0}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 48px;
  height:56px;display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{
  font-family:var(--mono);font-size:.95rem;font-weight:700;
  color:var(--text);text-decoration:none;letter-spacing:-.02em;
  display:flex;align-items:center;gap:8px;
}
.nav-logo-mark{
  width:28px;height:28px;background:var(--text);color:var(--bg);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:800;font-size:.85rem;
  border-radius:4px;
}
.nav-links{list-style:none;display:flex;gap:32px}
.nav-links a{
  text-decoration:none;color:var(--text-mid);
  font-family:var(--mono);font-size:.8rem;font-weight:500;
  transition:color var(--transition);letter-spacing:.01em;
}
.nav-links a:hover,.nav-links a.active{color:var(--text);text-decoration:underline;text-underline-offset:4px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle span{display:block;width:20px;height:1.5px;background:var(--text);border-radius:2px;transition:var(--transition)}

/* ── Section base ── */
.section{padding:120px 0;position:relative}
.section-header{position:relative;margin-bottom:56px}
.section-number{
  font-family:var(--mono);font-size:clamp(6rem,12vw,10rem);
  font-weight:800;color:var(--text-ghost);opacity:.4;
  position:absolute;top:-40px;left:-8px;line-height:1;
  user-select:none;pointer-events:none;
}
.section-comment{
  font-family:var(--mono);font-size:.8rem;color:var(--text-muted);
  margin-bottom:6px;letter-spacing:.02em;
}
.section-title{
  font-size:clamp(2rem,4vw,2.75rem);font-weight:700;
  color:var(--text-mid);letter-spacing:-.02em;line-height:1.2;
}

/* ── Hero ── */
.hero{
  min-height:100vh;display:flex;align-items:center;
  padding:120px 0 80px;position:relative;
}
.hero-comment{
  font-family:var(--mono);font-size:.8rem;color:var(--text-muted);
  margin-bottom:4px;
}
.hero-stats{
  font-family:var(--mono);font-size:.85rem;color:var(--text-mid);
  margin-bottom:12px;
}
.hero-stats a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.hero-greeting{
  font-size:clamp(2.5rem,6vw,4.5rem);font-weight:700;
  color:var(--text-ghost);line-height:1.15;letter-spacing:-.03em;
}
.hero-name{
  font-size:clamp(3rem,8vw,6rem);font-weight:800;
  color:var(--text);line-height:1.05;letter-spacing:-.04em;
  margin-bottom:20px;
}
.hero-description{
  font-size:1.1rem;color:var(--text-mid);
  max-width:600px;line-height:1.8;margin-bottom:32px;
}
.hero-links{display:flex;gap:20px;margin-top:20px}
.hero-links a{
  color:var(--text-muted);transition:color var(--transition),transform var(--transition);
  display:flex;align-items:center;
}
.hero-links a:hover{color:var(--accent);transform:translateY(-2px)}

/* ── About ── */
.about{background:var(--surface);border-top:1px solid #d8d8d8;border-bottom:1px solid #d8d8d8}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.about-text{font-size:1.15rem;color:var(--text-mid);line-height:1.85;max-width:560px}
.about-text strong{color:var(--text);font-weight:600}
.about-text a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;transition:color var(--transition)}
.about-text a:hover{color:var(--text)}

.stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.stat-card{padding:24px;text-align:center}
.stat-number{
  font-family:var(--sans);font-size:2.5rem;font-weight:800;
  color:var(--text);line-height:1;
}
.stat-number .stat-suffix{font-size:1.5rem;color:var(--accent);font-weight:600}
.stat-label{
  font-family:var(--mono);font-size:.75rem;color:var(--text-mid);
  margin-top:6px;letter-spacing:.02em;
}
.stat-detail{
  font-family:var(--mono);font-size:.65rem;color:var(--text-muted);
  margin-top:2px;
}

/* ── Experience ── */
.timeline{position:relative;padding-left:0}
.timeline-item{
  padding:28px 0;border-bottom:1px solid #d8d8d8;
  display:grid;grid-template-columns:200px 1fr;gap:40px;
}
.timeline-item:last-child{border-bottom:none}
.timeline-meta{}
.timeline-date{
  font-family:var(--mono);font-size:.8rem;color:var(--red);
  display:block;margin-bottom:4px;
}
.timeline-location{font-family:var(--mono);font-size:.75rem;color:var(--text-muted)}
.timeline-body h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:2px}
.timeline-company{
  font-family:var(--mono);font-size:.85rem;color:var(--accent);
  font-weight:600;margin-bottom:12px;display:inline-block;
}
.timeline-details{list-style:none}
.timeline-details li{
  position:relative;padding-left:16px;margin-bottom:6px;
  color:var(--text-mid);font-size:.9rem;line-height:1.7;
}
.timeline-details li::before{
  content:'';position:absolute;left:0;top:11px;
  width:4px;height:4px;border-radius:50%;background:var(--text-muted);
}
.timeline-details a{
  color:var(--accent);text-decoration:underline;text-underline-offset:3px;
  transition:color var(--transition);
}
.timeline-details a:hover{color:var(--text)}

/* ── Projects ── */
.projects-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.project-card{
  background:var(--surface);border:1px solid #d8d8d8;
  border-radius:var(--radius);padding:32px;
  text-decoration:none;color:inherit;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
  display:flex;flex-direction:column;
}
.project-card:hover{
  transform:translateY(-4px);
  box-shadow:0 8px 32px rgba(0,0,0,.08);
  border-color:var(--accent);
}
.project-meta{
  font-family:var(--mono);font-size:.75rem;margin-bottom:12px;
  display:flex;align-items:center;gap:10px;
}
.project-year{color:var(--red)}
.project-role{color:var(--accent)}
.project-card h3{
  font-size:1.15rem;font-weight:700;color:var(--text);
  margin-bottom:10px;letter-spacing:-.01em;
}
.project-card p{
  color:var(--text-mid);font-size:.9rem;line-height:1.7;
  flex:1;margin-bottom:16px;
}
.project-tech{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.project-tech span{
  font-family:var(--mono);font-size:.7rem;font-weight:500;
  color:var(--text-mid);border:1px solid #d0d0d0;
  padding:3px 10px;border-radius:50px;
}
.project-link-text{
  font-family:var(--mono);font-size:.8rem;font-weight:600;color:var(--accent);
}
.projects-cta{text-align:center;margin-top:48px}

/* ── Buttons ── */
.btn{
  display:inline-flex;align-items:center;
  font-family:var(--mono);font-size:.85rem;font-weight:600;
  text-decoration:none;cursor:pointer;transition:all var(--transition);border:none;
}
.btn-primary{
  background:var(--accent);color:#fff;
  padding:14px 32px;border-radius:var(--radius);
}
.btn-primary:hover{
  background:#3a48e6;transform:translateY(-1px);
  box-shadow:0 4px 16px rgba(79,93,255,.3);
}
.btn-outline{
  background:transparent;color:var(--text-mid);
  padding:14px 32px;border:1px solid #c0c0c0;border-radius:var(--radius);
}
.btn-outline:hover{border-color:var(--text);color:var(--text);transform:translateY(-1px)}

/* ── Skills ── */
.skills{background:var(--surface);border-top:1px solid #d8d8d8;border-bottom:1px solid #d8d8d8}
.skills-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.skill-category h3{
  font-family:var(--mono);font-size:.75rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;
  color:var(--text-muted);margin-bottom:16px;
}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px}
.skill-tags span{
  font-family:var(--mono);font-size:.8rem;font-weight:500;
  color:var(--text-mid);border:1px solid #d0d0d0;
  padding:6px 14px;border-radius:var(--radius);
  transition:all var(--transition);
}
.skill-tags span:hover{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}

/* ── Education ── */
.education-card{
  display:flex;gap:24px;align-items:flex-start;
  background:var(--surface);border:1px solid #d8d8d8;
  border-radius:var(--radius);padding:32px;
}
.education-icon{
  flex-shrink:0;width:48px;height:48px;display:flex;align-items:center;justify-content:center;
  background:var(--accent-soft);color:var(--accent);border-radius:var(--radius);
}
.education-card h3{font-size:1.1rem;font-weight:700;margin-bottom:2px}
.education-card>div>p{color:var(--text-mid);font-size:.9rem}
.education-degree{font-weight:600;color:var(--text)!important;margin-top:4px}
.education-activities{
  margin-top:6px;font-family:var(--mono);font-size:.75rem!important;color:var(--text-muted)!important;
}

/* ── Contact ── */
.contact{text-align:center}
.contact-text{max-width:560px;margin:0 auto 20px;color:var(--text-mid);font-size:1.05rem;line-height:1.8}
.contact-status{
  font-family:var(--mono);font-size:.85rem;color:var(--green);
  margin-bottom:40px;display:flex;align-items:center;justify-content:center;gap:8px;
}
.contact-status::before{
  content:'';width:8px;height:8px;border-radius:50%;
  background:var(--green);display:inline-block;
  animation:pulse 2s infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.contact-links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.contact-card{
  display:flex;align-items:center;gap:10px;
  padding:14px 24px;background:var(--surface);border:1px solid #d0d0d0;
  border-radius:var(--radius);text-decoration:none;color:var(--text);
  font-family:var(--mono);font-weight:500;font-size:.85rem;
  transition:all var(--transition);
}
.contact-card:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.06)}
.contact-card svg{flex-shrink:0}

/* ── Status Bar ── */
.status-bar{
  position:fixed;bottom:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.9);backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-top:1px solid #d0d0d0;height:32px;
  font-family:var(--mono);font-size:.7rem;color:var(--text-mid);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;
}
.status-left,.status-right{display:flex;align-items:center;gap:16px}
.status-mode{
  color:var(--accent);border:1px solid var(--accent);
  padding:1px 6px;border-radius:3px;font-size:.65rem;font-weight:600;
}
.status-section{color:var(--text-muted)}

/* ── Footer ── */
.footer{padding:32px 0 48px;text-align:center;border-top:1px solid #d8d8d8}
.footer p{font-family:var(--mono);font-size:.7rem;color:var(--text-muted)}

/* ── Animations ── */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease-out,transform .6s ease-out}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ── Responsive ── */
@media(max-width:768px){
  .container{padding:0 20px}
  .nav-inner{padding:0 20px}
  .nav-links{
    display:none;position:absolute;top:56px;left:0;right:0;
    background:var(--bg);border-bottom:1px solid #d0d0d0;
    flex-direction:column;padding:20px;gap:16px;
  }
  .nav-links.open{display:flex}
  .nav-toggle{display:flex}
  .hero{min-height:auto;padding:100px 0 60px}
  .hero-name{font-size:2.5rem}
  .section{padding:80px 0}
  .section-number{font-size:5rem;top:-20px}
  .about-grid{grid-template-columns:1fr;gap:40px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .timeline-item{grid-template-columns:1fr;gap:8px}
  .projects-grid{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:1fr;gap:32px}
  .education-card{flex-direction:column;padding:24px}
  .contact-links{flex-direction:column;align-items:center}
  .status-bar{display:none}
}
@media(max-width:480px){
  .hero-name{font-size:2rem}
  .stats-grid{grid-template-columns:1fr}
}