/* ---------- tokens ---------- */
:root{
  --ink: #12151c;
  --panel: #181c25;
  --panel-2: #1e2330;
  --paper: #edeae2;
  --muted: #8891a3;
  --line: #2a2f3b;
  --accent: #e8a33d;
  --accent-dim: #b9812e;

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --wrap: 1080px;
}

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

body{
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

a{ color: inherit; }

.muted{ color: var(--muted); }

/* subtle grain so the flat ink background doesn't feel dead */
.grain{
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: .035;
  background-image: radial-gradient(var(--paper) 0.6px, transparent 0.6px);
  background-size: 3px 3px;
}

/* ---------- header ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(18, 21, 28, 0.86);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.mark{
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.mark .dot{ color: var(--accent); }

.nav{
  display: flex;
  gap: 28px;
}
.nav a{
  text-decoration: none;
  font-size: 14px;
  color: var(--muted);
  transition: color .15s ease;
}
.nav a:hover{ color: var(--paper); }

.header-cta{
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 7px 14px;
}
.header-cta:hover{ background: var(--accent); color: var(--ink); }

.nav-toggle{
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span{
  width: 20px;
  height: 1.5px;
  background: var(--paper);
}

.nav-mobile{
  display: none;
  flex-direction: column;
  padding: 8px 28px 20px;
  border-top: 1px solid var(--line);
}
.nav-mobile a{
  color: var(--paper);
  text-decoration: none;
  font-size: 15px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.nav-mobile a:last-child{ border-bottom: none; }

.site-header.open .nav-mobile{ display: flex; }

/* ---------- hero ---------- */
.hero{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  padding-top: 88px;
  padding-bottom: 88px;
}

.kicker{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin: 0 0 18px;
}

.hero-text h1{
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.05;
  margin: 0 0 24px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.hero-lede{
  max-width: 46ch;
  color: var(--paper);
  font-size: 17px;
  margin: 0 0 14px;
}
.hero-lede-sub{ color: var(--muted); }

.hero-actions{
  display: flex;
  gap: 14px;
  margin-top: 30px;
}

.btn{
  display: inline-block;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 12px 20px;
  border: 1px solid transparent;
  transition: all .15s ease;
}
.btn-primary{
  background: var(--accent);
  color: var(--ink);
}
.btn-primary:hover{ background: var(--accent-dim); }
.btn-ghost{
  border-color: var(--line);
  color: var(--paper);
}
.btn-ghost:hover{ border-color: var(--paper); }

/* layered architecture diagram */
.hero-diagram{
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.layer{
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px 18px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-left: calc(var(--i) * 14px);
  transition: transform .2s ease, border-color .2s ease;
}
.layer:hover{
  transform: translateX(-4px);
  border-color: var(--accent-dim);
}
.layer-label{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--paper);
}
.layer-note{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  text-align: right;
}
.diagram-caption{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin: 8px 0 0 calc(3 * 14px);
}

/* ---------- sections ---------- */
.section{
  position: relative;
  z-index: 1;
  padding: 76px 28px;
  border-top: 1px solid var(--line);
}

.section-head{
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 40px;
}
.section-head h2{
  font-size: 1.6rem;
  margin: 0;
  font-weight: 600;
}
.section-index{
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 13px;
}

/* profile */
.profile-grid{
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 50px;
}
.profile-text{
  font-size: 17px;
  max-width: 56ch;
  margin: 0;
}
.profile-facts{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.profile-facts li{
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.profile-facts span{
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.profile-facts a{ text-decoration: none; color: var(--accent); }

/* stack */
.stack-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.stack-card{
  background: var(--ink);
  padding: 24px 22px;
}
.stack-label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 14px;
}
.stack-card ul{
  list-style: none;
  margin: 0;
  padding: 0;
}
.stack-card li{
  font-size: 14.5px;
  padding: 5px 0;
  color: var(--paper);
}

/* work / projects */
.project{
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.project:first-of-type{ padding-top: 0; }
.project:last-of-type{ border-bottom: none; }

.project-dates{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  margin: 0 0 6px;
}
.project-role{
  font-size: 13px;
  color: var(--accent);
  margin: 0;
}

.project-body h3{
  font-size: 1.3rem;
  margin: 0 0 10px;
  font-weight: 600;
}
.project-summary{
  margin: 0 0 18px;
  max-width: 62ch;
  color: var(--paper);
}
.project-list{
  margin: 0 0 16px;
  padding-left: 20px;
  max-width: 66ch;
}
.project-list li{
  margin-bottom: 8px;
  color: #cfd0d6;
}
.project-note{
  font-size: 13px;
  color: var(--muted);
  font-style: italic;
  margin: 0 0 16px;
}
.project-links{
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.project-links a{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  padding-bottom: 2px;
}
.project-links a:hover{ color: var(--paper); border-color: var(--paper); }

/* awards */
.awards-list{
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.awards-list li{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  flex-wrap: wrap;
}
.award-title{
  margin: 0;
  font-size: 15.5px;
}
.award-org{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}

/* education */
.edu-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.edu-card{
  background: var(--ink);
  padding: 28px 26px;
}
.edu-dates{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 10px;
}
.edu-card h3{
  font-size: 1.15rem;
  margin: 0 0 4px;
}
.edu-course{
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 18px;
}
.tag-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-list li{
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--paper);
  border: 1px solid var(--line);
  padding: 5px 10px;
}

/* footer */
.site-footer{
  border-top: 1px solid var(--line);
  padding: 40px 0 50px;
}
.footer-inner{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-name{ margin: 0; font-weight: 600; }
.footer-loc{ margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.footer-links{
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}
.footer-links a{
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
}
.footer-links a:hover{ color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 860px){
  .nav, .header-cta{ display: none; }
  .nav-toggle{ display: flex; }

  .hero{
    grid-template-columns: 1fr;
    padding-top: 56px;
    padding-bottom: 56px;
    gap: 44px;
  }
  .hero-diagram{ order: -1; }
  .layer{ margin-left: calc(var(--i) * 8px); }
  .diagram-caption{ margin-left: calc(3 * 8px); }

  .profile-grid{ grid-template-columns: 1fr; gap: 30px; }
  .stack-grid{ grid-template-columns: 1fr 1fr; }
  .project{ grid-template-columns: 1fr; gap: 12px; }
  .edu-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 520px){
  .stack-grid{ grid-template-columns: 1fr; }
  .section{ padding: 56px 20px; }
  .header-inner{ padding: 0 4px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .layer{ transition: none; }
}

/* keyboard focus visibility */
a:focus-visible, button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}