:root{
  --base: #FAFAF8;
  --base-2: #F1F1EE;
  --ink: #1C1E1F;
  --muted: #6B7278;
  --line: #DBDDD8;
  --accent: #3A6EA5;
  --accent-2: #B5462F;
  --accent-3: #3C6B44;
  --mono-bg: #F3F4F1;
  --radius: 2px;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  background:var(--base);
  color:var(--ink);
  font-family:'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size:16px;
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; scroll-behavior:auto !important; }
}

a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }

.display{ font-family:'Space Grotesk', 'Inter', sans-serif; letter-spacing:-0.01em; }
.mono{ font-family:'IBM Plex Mono', 'JetBrains Mono', monospace; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }
.wrap{ max-width:1120px; margin:0 auto; padding:0 32px; }

/* ---------- HEADER ---------- */
header{
  position:sticky; top:0; z-index:50;
  background:rgba(250,250,248,0.88);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.logo{
  font-family:'Space Grotesk', sans-serif; font-weight:600; font-size:15px;
  letter-spacing:0.02em; display:flex; align-items:center; gap:8px;
}
.logo .mark{ width:14px; height:14px; display:inline-block; }
nav ul{ display:flex; gap:32px; font-size:14px; color:var(--muted); }
nav a{ transition:color .15s ease; }
nav a:hover{ color:var(--ink); }

/* ---------- HOME HERO ---------- */
.hero{ position:relative; padding:96px 0 110px; overflow:hidden; border-bottom:1px solid var(--line); }
.hero-grid{ position:absolute; inset:0; z-index:0; opacity:0.55; }
.hero-content{ position:relative; z-index:1; max-width:680px; }
.eyebrow{
  font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:0.14em;
  text-transform:uppercase; color:var(--accent); display:flex; align-items:center; gap:10px; margin-bottom:22px;
}
.eyebrow::before{ content:""; width:18px; height:1px; background:var(--accent); display:inline-block; }
h1.name{ font-size:clamp(40px, 6vw, 64px); font-weight:600; line-height:1.04; margin-bottom:20px; }
.hero-thesis{ font-size:18px; color:var(--muted); max-width:520px; margin-bottom:36px; }
.hero-thesis strong{ color:var(--ink); font-weight:500; }
.hero-cta{ display:flex; gap:16px; align-items:center; }

.btn{
  font-size:14px; font-weight:500; padding:12px 22px; border-radius:var(--radius);
  border:1px solid var(--ink); background:var(--ink); color:var(--base);
  transition:transform .15s ease, box-shadow .15s ease; display:inline-block;
}
.btn:hover{ transform:translateY(-1px); box-shadow:0 6px 14px rgba(0,0,0,0.12); }
.btn-ghost{ background:transparent; color:var(--ink); border:1px solid var(--line); }
.btn-ghost:hover{ border-color:var(--ink); box-shadow:none; }

/* ---------- SECTIONS (home) ---------- */
section{ padding:88px 0; border-bottom:1px solid var(--line); }
.sec-head{ display:flex; justify-content:space-between; align-items:flex-end; margin-bottom:48px; gap:24px; }
.sec-num{ font-family:'IBM Plex Mono', monospace; font-size:12px; color:var(--muted); margin-bottom:10px; display:block; }
.sec-title{ font-size:30px; font-weight:600; }
.sec-note{ font-size:14px; color:var(--muted); max-width:280px; text-align:right; }

/* ---------- WORK GRID / IMAGE CARDS ---------- */
.work-grid{
  display:grid; grid-template-columns:1fr 1fr; gap:1px;
  background:var(--line); border:1px solid var(--line);
}
.card{ background:var(--base); }
.card-link{ display:flex; flex-direction:column; height:100%; }
.card:hover{ background:var(--base-2); }
.card:hover .card-img svg{ transform:scale(1.03); }
.card-img{
  aspect-ratio:16/10; overflow:hidden; background:var(--mono-bg);
  border-bottom:1px solid var(--line);
}
.card-img svg{ width:100%; height:100%; display:block; transition:transform .35s ease; }
.card-body{ padding:28px 32px; display:flex; flex-direction:column; gap:14px; flex:1; }
.card-top{ display:flex; justify-content:space-between; align-items:flex-start; gap:16px; }
.tag{
  font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:0.08em;
  text-transform:uppercase; padding:4px 8px; border-radius:2px; white-space:nowrap;
}
.tag-nuclear{ background:#EAF0F6; color:var(--accent); }
.tag-nano{ background:#F2EDE9; color:var(--accent-2); }
.tag-am{ background:#EDF1EB; color:var(--accent-3); }
.tag-metallurgy{ background:#F1EEF6; color:#6C4F9C; }

.card-title{ font-family:'Space Grotesk', sans-serif; font-size:19px; font-weight:600; line-height:1.3; }
.card-desc{ font-size:14.5px; color:var(--muted); line-height:1.6; }
.card-cta{
  font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--accent);
  display:flex; align-items:center; gap:6px; margin-top:auto; transition:gap .15s ease;
}
.card:hover .card-cta{ gap:10px; }

.spec-table{
  font-family:'IBM Plex Mono', monospace; font-size:12px; background:var(--mono-bg);
  border:1px solid var(--line); padding:14px 16px; display:grid;
  grid-template-columns:auto 1fr; row-gap:8px; column-gap:18px;
}
.spec-table dt{ color:var(--muted); }
.spec-table dd{ color:var(--ink); }

@media (max-width:760px){ .work-grid{ grid-template-columns:1fr; } }

/* ---------- ABOUT ---------- */
.about-grid{ display:grid; grid-template-columns:1.3fr 1fr; gap:64px; }
.about-bio p{ font-size:16px; color:var(--ink); margin-bottom:18px; max-width:520px; }
.about-bio p.lead{ font-size:19px; font-weight:500; }
.facts dt{
  font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--muted); margin-top:20px; margin-bottom:6px;
}
.facts dt:first-child{ margin-top:0; }
.facts dd{ font-size:14.5px; line-height:1.6; }
@media (max-width:760px){ .about-grid{ grid-template-columns:1fr; gap:40px; } }

/* ---------- SKILLS ---------- */
.skills-groups{ display:grid; grid-template-columns:repeat(3, 1fr); gap:40px; }
.skill-group h3{
  font-family:'IBM Plex Mono', monospace; font-size:12px; letter-spacing:0.08em;
  text-transform:uppercase; color:var(--accent); margin-bottom:16px; padding-bottom:10px; border-bottom:1px solid var(--line);
}
.skill-group ul li{
  font-size:14.5px; padding:7px 0; border-bottom:1px dashed var(--line);
  display:flex; justify-content:space-between;
}
.skill-group ul li:last-child{ border-bottom:none; }
.skill-group ul li span.level{ color:var(--muted); font-family:'IBM Plex Mono', monospace; font-size:11px; }
@media (max-width:760px){ .skills-groups{ grid-template-columns:1fr; } }

/* ---------- CONTACT / FOOTER ---------- */
.contact{ border-bottom:none; padding-bottom:64px; }
.contact-inner{ display:flex; justify-content:space-between; align-items:flex-end; flex-wrap:wrap; gap:32px; }
.contact-title{ font-size:clamp(30px,4vw,44px); font-weight:600; max-width:460px; line-height:1.15; }
.contact-links{ display:flex; flex-direction:column; gap:10px; font-family:'IBM Plex Mono', monospace; font-size:14px; }
.contact-links a{
  display:inline-flex; align-items:center; gap:8px; color:var(--ink);
  border-bottom:1px solid transparent; padding-bottom:2px; transition:border-color .15s ease, color .15s ease;
}
.contact-links a:hover{ border-color:var(--accent); color:var(--accent); }

footer{ padding:24px 0 40px; }
.footer-inner{ display:flex; justify-content:space-between; align-items:center; font-size:12px; color:var(--muted); font-family:'IBM Plex Mono', monospace; }
.footer-inner a{ color:var(--accent); }
.footer-inner a:hover{ text-decoration:underline; }

.reveal{ opacity:0; transform:translateY(14px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- PROJECT DETAIL PAGE ---------- */
.project-hero{ padding:28px 0 44px; border-bottom:1px solid var(--line); }
.back-link{
  font-family:'IBM Plex Mono', monospace; font-size:13px; color:var(--accent);
  display:inline-block; margin-bottom:28px;
}
.back-link:hover{ text-decoration:underline; }
.project-meta{ margin-bottom:18px; }
.project-title{ font-size:clamp(30px,4.5vw,46px); font-weight:600; line-height:1.12; margin-bottom:16px; max-width:760px; }
.project-summary{ font-size:17px; color:var(--muted); max-width:640px; }

.project-body{ padding:64px 0; border-bottom:1px solid var(--line); }
.project-image{
  width:100%; aspect-ratio:16/10; background:var(--mono-bg);
  border:1px solid var(--line); overflow:hidden; margin-bottom:10px;
}
.project-image svg{ width:100%; height:100%; display:block; }
.image-caption{ font-family:'IBM Plex Mono', monospace; font-size:11.5px; color:var(--muted); margin-bottom:48px; }
.inline-photo{ display:block; width:100%; height:auto; border:1px solid var(--line); margin:24px 0; }

.project-layout{ display:grid; grid-template-columns:1.5fr 1fr; gap:64px; }
.project-content h2{ font-family:'Space Grotesk',sans-serif; font-size:20px; font-weight:600; margin:36px 0 14px; }
.project-content h2:first-child{ margin-top:0; }
.project-content p{ font-size:15.5px; color:var(--ink); margin-bottom:14px; max-width:640px; line-height:1.7; }
.project-content ul.detail-list{ margin-bottom:14px; }
.project-content ul.detail-list li{
  font-size:15px; padding-left:20px; position:relative; margin-bottom:10px; color:var(--ink); line-height:1.6;
}
.project-content ul.detail-list li::before{
  content:"→"; position:absolute; left:0; color:var(--accent); font-family:'IBM Plex Mono',monospace; font-size:13px;
}

.project-sidebar{ display:flex; flex-direction:column; gap:24px; align-self:start; position:sticky; top:88px; }
.sidebar-block{ background:var(--mono-bg); border:1px solid var(--line); padding:22px; }
.sidebar-block h3{
  font-family:'IBM Plex Mono', monospace; font-size:11px; letter-spacing:0.08em; text-transform:uppercase;
  color:var(--muted); margin-bottom:14px;
}
.doc-card{
  display:flex; align-items:center; gap:12px; padding:14px; background:var(--base);
  border:1px solid var(--line); margin-bottom:14px; transition:border-color .15s ease, background .15s ease;
}
.doc-card:hover{ border-color:var(--accent); background:#fff; }
.doc-icon, .pres-icon{ width:28px; height:28px; flex-shrink:0; }
.doc-name{ font-size:13.5px; font-weight:500; line-height:1.3; }
.doc-meta{ font-family:'IBM Plex Mono', monospace; font-size:11px; color:var(--muted); margin-top:3px; }
.doc-card-link .btn{ width:100%; text-align:center; }

@media (max-width:760px){ .project-layout{ grid-template-columns:1fr; } .project-sidebar{ position:static; } }