:root{
  --bg:#080b10;
  --bg-deep:#05070a;
  --panel:rgba(255,255,255,0.045);
  --panel-strong:rgba(255,255,255,0.07);
  --border:rgba(255,255,255,0.09);
  --border-soft:rgba(255,255,255,0.06);
  --cyan:#4fd6e8;
  --cyan-dim:rgba(79,214,232,0.5);
  --violet:#9b8cf2;
  --violet-dim:rgba(155,140,242,0.45);
  --text:#e9edf3;
  --text-dim:#9aa7b8;
  --text-faint:#5e6b7c;
  --font-head:'Space Grotesk', sans-serif;
  --font-body:'IBM Plex Sans', sans-serif;
  --font-mono:'IBM Plex Mono', monospace;
  --radius:18px;
  --radius-sm:10px;
  --maxw:1180px;
}

*{box-sizing:border-box; margin:0; padding:0;}
html{scroll-behavior:smooth;}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important;}
}

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%; display:block;}
a{color:inherit; text-decoration:none;}
button{font-family:inherit; cursor:pointer;}
section{position:relative; padding:120px 24px;}
.wrap{max-width:var(--maxw); margin:0 auto;}

h1,h2,h3,h4{font-family:var(--font-head); font-weight:600; letter-spacing:-0.01em; line-height:1.12;}

::selection{background:var(--cyan-dim); color:#05070a;}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:4px;
}

/* -------- background atmosphere -------- */
.bg-fixed{
  position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden;
  background:
    radial-gradient(ellipse 900px 600px at 20% 8%, rgba(79,214,232,0.07), transparent 60%),
    radial-gradient(ellipse 700px 500px at 85% 30%, rgba(155,140,242,0.06), transparent 60%),
    var(--bg-deep);
}
.bg-stars{position:absolute; inset:0; background-repeat:repeat; opacity:0.5;}
.bg-contours{position:absolute; inset:-10%; opacity:0.35;}
.bg-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 70% 60% at 50% 30%, black, transparent 75%);
}

.mouse-glow{
  position:fixed; width:520px; height:520px; border-radius:50%;
  background:radial-gradient(circle, rgba(79,214,232,0.05), transparent 70%);
  pointer-events:none; z-index:1; transform:translate(-50%,-50%);
  transition:opacity 0.3s; opacity:0;
}

main{position:relative; z-index:2;}

/* -------- glass -------- */
.glass{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  box-shadow:0 1px 0 rgba(255,255,255,0.04) inset, 0 20px 40px -20px rgba(0,0,0,0.5);
}
.glass-strong{background:var(--panel-strong);}

/* -------- nav -------- */
.nav-wrap{
  position:fixed; top:18px; left:0; right:0; z-index:50;
  display:flex; justify-content:center; padding:0 20px;
}
.nav{
  display:flex; align-items:center; gap:6px;
  background:rgba(10,13,18,0.6);
  border:1px solid var(--border);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border-radius:999px;
  padding:8px 8px 8px 18px;
  width:100%; max-width:760px;
  justify-content:space-between;
}
.nav-logo{font-family:var(--font-head); font-weight:700; font-size:1.05rem; letter-spacing:0.02em; color:var(--cyan);}
.nav-links{display:flex; gap:2px; list-style:none;}
.nav-links a{
  font-size:0.86rem; padding:8px 14px; border-radius:999px; color:var(--text-dim);
  transition:color 0.25s, background 0.25s; white-space:nowrap;
}
.nav-links a:hover{color:var(--text);}
.nav-links a.active{color:var(--bg); background:var(--cyan);}
.nav-toggle{display:none; background:none; border:none; color:var(--text); padding:8px;}
.nav-toggle svg{width:22px; height:22px;}

@media (max-width:860px){
  .nav-links{
    position:fixed; top:74px; right:20px; left:20px;
    flex-direction:column; gap:4px;
    background:rgba(8,11,16,0.92);
    border:1px solid var(--border);
    border-radius:16px; padding:10px;
    backdrop-filter:blur(20px);
    transform:translateY(-12px) scale(0.98); opacity:0; pointer-events:none;
    transition:all 0.25s ease;
  }
  .nav-links.open{transform:translateY(0) scale(1); opacity:1; pointer-events:auto;}
  .nav-links a{padding:12px 14px; width:100%;}
  .nav-toggle{display:flex;}
}

/* -------- hero -------- */
.hero{
  min-height:100svh; display:flex; align-items:center; justify-content:center;
  text-align:center; padding:140px 24px 100px; position:relative;
}
.hero-panel{padding:64px 44px; max-width:760px;}
.hero-coord{
  font-family:var(--font-mono); font-size:0.72rem; color:var(--cyan);
  letter-spacing:0.08em; margin-bottom:26px; opacity:0.85;
}
.hero-coord span{display:block; color:var(--text-faint); margin-top:2px;}
.hero h1{
  font-size:clamp(2.6rem, 7vw, 4.6rem); color:var(--text); margin-bottom:20px;
}
.hero-tagline{font-size:clamp(1.15rem, 2.4vw, 1.5rem); color:var(--cyan); font-weight:500; margin-bottom:14px;}
.hero-desc{font-size:1rem; color:var(--text-dim); max-width:480px; margin:0 auto 36px;}
.hero-btns{display:flex; gap:14px; justify-content:center; flex-wrap:wrap;}

.btn{
  font-family:var(--font-body); font-weight:600; font-size:0.88rem;
  padding:14px 26px; border-radius:999px; border:1px solid var(--border);
  display:inline-flex; align-items:center; gap:8px; transition:transform 0.2s, background 0.2s, border-color 0.2s;
}
.btn-primary{background:var(--cyan); color:#04141a; border-color:var(--cyan);}
.btn-primary:hover{transform:translateY(-2px); background:#6de3f0;}
.btn-ghost{background:rgba(255,255,255,0.02); color:var(--text);}
.btn-ghost:hover{transform:translateY(-2px); border-color:var(--cyan-dim); color:var(--cyan);}

.scroll-hint{
  position:absolute; bottom:38px; left:50%; transform:translateX(-50%);
  font-family:var(--font-mono); font-size:0.68rem; color:var(--text-faint);
  letter-spacing:0.12em; display:flex; flex-direction:column; align-items:center; gap:8px;
}
.scroll-hint .line{width:1px; height:26px; background:linear-gradient(var(--cyan), transparent); animation:scrollline 2s ease-in-out infinite;}
@keyframes scrollline{0%,100%{opacity:0.3;} 50%{opacity:1;}}

/* -------- section heads -------- */
.eyebrow{
  font-family:var(--font-mono); font-size:0.72rem; letter-spacing:0.1em; color:var(--cyan);
  margin-bottom:14px; display:block;
}
.section-title{font-size:clamp(1.8rem, 4vw, 2.6rem); margin-bottom:16px;}
.section-lead{color:var(--text-dim); max-width:560px; font-size:1.02rem;}

.reveal{opacity:0; transform:translateY(24px); transition:opacity 0.7s ease, transform 0.7s ease;}
.reveal.in{opacity:1; transform:translateY(0);}

/* -------- about -------- */
.about-grid{display:grid; grid-template-columns:1.3fr 1fr; gap:22px; margin-top:52px;}
.about-main{padding:44px; font-size:1.06rem; color:var(--text-dim);}
.about-main p{margin-bottom:18px;}
.about-main p:last-child{margin-bottom:0; color:var(--text);}
.about-cards{display:grid; grid-template-columns:1fr 1fr; gap:16px;}
.mini-card{padding:24px; transition:transform 0.3s, border-color 0.3s;}
.mini-card:hover{transform:translateY(-4px); border-color:var(--cyan-dim);}
.mini-card h4{font-size:0.95rem; color:var(--cyan); margin-bottom:8px; letter-spacing:0.02em;}
.mini-card p{font-size:0.86rem; color:var(--text-dim);}
@media (max-width:900px){.about-grid{grid-template-columns:1fr;} .about-main{padding:30px;}}

/* -------- two worlds -------- */
.worlds{display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:52px;}
.world-panel{padding:44px; position:relative; overflow:hidden;}
.world-panel h3{font-size:1.3rem; margin-bottom:20px;}
.world-list{list-style:none; display:flex; flex-wrap:wrap; gap:10px; margin-bottom:26px;}
.world-list li{
  font-family:var(--font-mono); font-size:0.78rem; padding:7px 13px;
  border:1px solid var(--border); border-radius:999px; color:var(--text-dim);
}
.world-panel p{color:var(--text); font-size:1rem;}
.world-technical{border-color:var(--cyan-dim);}
.world-human{border-color:var(--violet-dim);}
.world-technical h3{color:var(--cyan);}
.world-human h3{color:var(--violet);}
@media (max-width:820px){.worlds{grid-template-columns:1fr;}}

/* -------- featured project -------- */
.project{padding:52px; margin-top:52px;}
.project-head{display:flex; justify-content:space-between; align-items:flex-start; flex-wrap:wrap; gap:20px; margin-bottom:34px;}
.project-title{font-size:clamp(1.8rem,4vw,2.4rem); margin-bottom:8px;}
.project-sub{color:var(--cyan); font-family:var(--font-mono); font-size:0.85rem;}
.project-team{font-size:0.82rem; color:var(--text-dim); text-align:right;}
.project-team strong{color:var(--text); display:block; font-weight:500;}
.project-body{display:grid; grid-template-columns:1fr 1fr; gap:40px; margin-bottom:36px;}
.project-body p{color:var(--text-dim); margin-bottom:16px; font-size:0.98rem;}
.project-body p strong{color:var(--text); font-weight:600;}
.project-flow{
  display:flex; flex-direction:column; gap:0; align-items:center;
  font-family:var(--font-mono); font-size:0.78rem;
}
.flow-step{
  border:1px solid var(--border); border-radius:10px; padding:10px 16px;
  width:100%; text-align:center; color:var(--text); background:rgba(255,255,255,0.02);
}
.flow-arrow{color:var(--cyan); font-size:0.9rem; padding:4px 0;}
.project-tags{display:flex; flex-wrap:wrap; gap:10px; margin-bottom:32px;}
.tag{
  font-family:var(--font-mono); font-size:0.75rem; padding:7px 14px;
  border:1px solid var(--border-soft); border-radius:8px; color:var(--cyan); background:rgba(79,214,232,0.05);
}
@media (max-width:800px){.project-body{grid-template-columns:1fr;} .project-team{text-align:left;}}

/* -------- learning -------- */
.skills-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:52px;}
.skill-card{padding:26px; transition:transform 0.3s, border-color 0.3s;}
.skill-card:hover{transform:translateY(-4px); border-color:var(--cyan-dim);}
.skill-card h4{font-size:1rem; color:var(--text); margin-bottom:8px;}
.skill-card p{font-size:0.85rem; color:var(--text-dim);}
@media (max-width:900px){.skills-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.skills-grid{grid-template-columns:1fr;}}

.next-map{margin-top:44px; padding:32px 36px;}
.next-map h4{font-size:0.9rem; color:var(--violet); margin-bottom:16px; font-family:var(--font-mono); letter-spacing:0.05em;}
.next-tags{display:flex; flex-wrap:wrap; gap:10px;}
.next-tags span{
  font-size:0.84rem; padding:8px 14px; border:1px dashed var(--border); border-radius:999px; color:var(--text-dim);
}

/* -------- timeline -------- */
.timeline{margin-top:60px; position:relative; padding-left:28px;}
.timeline::before{
  content:''; position:absolute; left:5px; top:6px; bottom:6px; width:1px;
  background:linear-gradient(var(--cyan-dim), var(--violet-dim));
}
.tl-item{position:relative; padding:0 0 44px 30px;}
.tl-item:last-child{padding-bottom:0;}
.tl-dot{
  position:absolute; left:-29px; top:4px; width:11px; height:11px; border-radius:50%;
  background:var(--bg); border:2px solid var(--cyan); box-shadow:0 0 0 4px rgba(79,214,232,0.08);
}
.tl-year{font-family:var(--font-mono); font-size:0.78rem; color:var(--cyan); margin-bottom:6px; letter-spacing:0.04em;}
.tl-item h4{font-size:1.15rem; margin-bottom:6px;}
.tl-item p{color:var(--text-dim); font-size:0.95rem; max-width:460px;}

/* -------- beyond earth -------- */
.space-section{position:relative;}
.space-stats{display:grid; grid-template-columns:repeat(5,1fr); gap:12px; margin-top:44px;}
.stat-card{padding:22px 14px; text-align:center;}
.stat-card span{display:block; font-family:var(--font-mono); font-size:0.78rem; color:var(--cyan); letter-spacing:0.02em;}
.space-role{margin-top:36px; padding:34px 38px; max-width:640px;}
.space-role h4{font-size:1.1rem; color:var(--violet); margin-bottom:6px;}
.space-role .role-tag{font-family:var(--font-mono); font-size:0.75rem; color:var(--text-faint); margin-bottom:14px; display:block;}
.space-role p{color:var(--text-dim);}
@media (max-width:900px){.space-stats{grid-template-columns:repeat(2,1fr);}}

/* -------- creative gallery -------- */
.creative-intro{font-size:1.3rem; font-style:normal; color:var(--text); max-width:520px; margin-top:18px; font-family:var(--font-head); font-weight:500;}
.creative-cats{display:flex; gap:10px; flex-wrap:wrap; margin:36px 0 30px;}
.cat-pill{
  font-family:var(--font-mono); font-size:0.75rem; padding:8px 16px; border-radius:999px;
  border:1px solid var(--border); color:var(--text-dim); background:transparent; transition:all 0.2s;
}
.cat-pill.active{color:var(--bg); background:var(--cyan); border-color:var(--cyan);}
.gallery{display:grid; grid-template-columns:repeat(4,1fr); gap:16px;}
.gallery-card{
  aspect-ratio:3/4; border-radius:var(--radius-sm); border:1px dashed var(--border);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  color:var(--text-faint); text-align:center; padding:20px; cursor:pointer;
  transition:transform 0.3s, border-color 0.3s; background:rgba(255,255,255,0.02);
}
.gallery-card:hover{transform:translateY(-4px); border-color:var(--cyan-dim); color:var(--cyan);}
.gallery-card svg{width:26px; height:26px; opacity:0.7;}
.gallery-card span{font-family:var(--font-mono); font-size:0.72rem; letter-spacing:0.04em;}
@media (max-width:900px){.gallery{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.gallery{grid-template-columns:1fr 1fr;} .gallery-card{aspect-ratio:1/1;}}

/* -------- currently exploring -------- */
.explore-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin-top:52px;}
.explore-card{padding:28px 24px;}
.explore-card h4{font-size:0.95rem; color:var(--cyan); letter-spacing:0.04em; margin-bottom:12px;}
.explore-card p{font-size:0.86rem; color:var(--text-dim);}
@media (max-width:900px){.explore-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.explore-grid{grid-template-columns:1fr;}}

/* -------- credentials -------- */
.cred-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:52px;}
.cred-card{padding:0; overflow:hidden; display:flex; flex-direction:column;}
.cred-preview{
  aspect-ratio:4/3; border-bottom:1px solid var(--border-soft);
  display:flex; align-items:center; justify-content:center; color:var(--text-faint);
  background:rgba(255,255,255,0.02);
}
.cred-preview svg{width:30px; height:30px; opacity:0.6;}
.cred-body{padding:22px;}
.cred-body h4{font-size:1rem; margin-bottom:4px;}
.cred-body p{font-size:0.82rem; color:var(--text-dim); margin-bottom:14px;}
.cred-link{font-family:var(--font-mono); font-size:0.75rem; color:var(--cyan);}
@media (max-width:900px){.cred-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.cred-grid{grid-template-columns:1fr;}}

/* -------- quote transition -------- */
.quote-section{text-align:center; padding:140px 24px;}
.quote-text{font-family:var(--font-head); font-size:clamp(1.7rem,5vw,3rem); max-width:720px; margin:0 auto 20px; color:var(--text); font-weight:500;}
.quote-by{font-family:var(--font-mono); font-size:0.85rem; color:var(--text-faint);}
.quote-label{font-family:var(--font-mono); font-size:0.68rem; color:var(--text-faint); letter-spacing:0.1em; display:block; margin-top:10px;}

/* -------- contact -------- */
.contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:22px; margin-top:52px;}
.contact-links{display:flex; flex-direction:column; gap:12px;}
.contact-link{
  display:flex; align-items:center; justify-content:space-between; padding:22px 26px;
  transition:transform 0.25s, border-color 0.25s;
}
.contact-link:hover{transform:translateX(4px); border-color:var(--cyan-dim);}
.contact-link h4{font-size:0.95rem; margin-bottom:4px;}
.contact-link p{font-size:0.82rem; color:var(--text-dim);}
.contact-link .arrow{color:var(--cyan); font-size:1.1rem;}
.contact-form{padding:36px;}
.field{margin-bottom:18px;}
.field label{display:block; font-size:0.8rem; color:var(--text-dim); margin-bottom:8px; font-family:var(--font-mono);}
.field input, .field textarea{
  width:100%; background:rgba(255,255,255,0.03); border:1px solid var(--border);
  border-radius:10px; padding:13px 15px; color:var(--text); font-family:var(--font-body); font-size:0.92rem;
  transition:border-color 0.2s;
}
.field input:focus, .field textarea:focus{border-color:var(--cyan); outline:none;}
.field textarea{resize:vertical; min-height:110px;}
.field .error{color:#f5a3a3; font-size:0.76rem; margin-top:6px; display:none;}
.field.has-error input, .field.has-error textarea{border-color:#e07a7a;}
.field.has-error .error{display:block;}
.form-status{font-size:0.85rem; margin-top:14px; color:var(--cyan); display:none;}
.form-status.show{display:block;}
@media (max-width:820px){.contact-grid{grid-template-columns:1fr;}}

/* -------- footer -------- */
footer{padding:60px 24px 40px; text-align:center; border-top:1px solid var(--border-soft);}
.footer-name{font-family:var(--font-head); font-weight:700; font-size:1.1rem; margin-bottom:6px;}
.footer-loc{color:var(--text-dim); font-size:0.85rem; margin-bottom:22px;}
.footer-links{display:flex; justify-content:center; gap:22px; margin-bottom:26px; font-size:0.85rem;}
.footer-links a{color:var(--text-dim); transition:color 0.2s;}
.footer-links a:hover{color:var(--cyan);}
.footer-bottom{color:var(--text-faint); font-size:0.78rem; font-family:var(--font-mono);}
.footer-bottom .closing{display:block; margin-top:6px; color:var(--cyan-dim);}

/* -------- lightbox -------- */
.lightbox{
  position:fixed; inset:0; z-index:100; display:flex; align-items:center; justify-content:center;
  background:rgba(4,6,9,0.85); backdrop-filter:blur(14px); opacity:0; pointer-events:none;
  transition:opacity 0.3s; padding:24px;
}
.lightbox.open{opacity:1; pointer-events:auto;}
.lightbox-panel{
  max-width:520px; width:100%; padding:40px; text-align:center;
  transform:scale(0.96); transition:transform 0.3s;
}
.lightbox.open .lightbox-panel{transform:scale(1);}
.lightbox-close{
  position:absolute; top:24px; right:28px; background:none; border:none; color:var(--text);
  font-size:1.6rem; line-height:1;
}

@media (max-width:640px){
  section{padding:80px 18px;}
  .hero-panel{padding:40px 24px;}
}