/* ============================================
   TOKENS
   ============================================ */
:root {
  --ink:            #0F1B16;
  --ink-soft:       #1B2E24;
  --paper:          #F4F5F1;
  --paper-dim:      #E8EAE3;
  --copper:         #C97C3D;
  --copper-bright:  #E2984F;
  --pcb-green:      #1B4332;
  --pcb-green-2:    #2D6A4F;
  --line:           rgba(15, 27, 22, 0.14);
  --line-light:     rgba(244, 245, 241, 0.16);
  --muted:          #5B6B62;
  --muted-light:    #A9B8AE;

  --font-display: 'IBM Plex Sans Condensed', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --container: 1080px;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

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

a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3 { margin: 0; font-family: var(--font-display); }
img { max-width: 100%; display: block; }

.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--copper); color: var(--ink); padding: 10px 16px; z-index: 999;
}
.skip-link:focus { left: 10px; top: 10px; }

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 3px;
}

/* subtle perfboard dot grid across whole page */
.grid-overlay {
  position: fixed; inset: 0;
  background-image: radial-gradient(var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.6;
}

/* ============================================
   TOPBAR
   ============================================ */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(244, 245, 241, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}
.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.05em;
}
.brand-dot { color: var(--copper); }
.nav { display: flex; gap: 26px; flex-wrap: wrap; }
.nav a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  text-transform: uppercase;
  position: relative;
  padding-bottom: 3px;
  transition: color 0.2s;
}
.nav a:hover { color: var(--ink); }
.nav a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 0; height: 1px; background: var(--copper);
  transition: width 0.25s;
}
.nav a:hover::after { width: 100%; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  padding: 12px 22px;
  border-radius: 3px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.2s, border-color 0.2s, color 0.2s;
  cursor: pointer;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--copper); color: var(--ink); font-weight: 600; }
.btn-primary:hover { background: var(--copper-bright); }
.btn-outline { border-color: var(--line); color: var(--ink); }
.btn-outline:hover { border-color: var(--copper); color: var(--copper); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-small { padding: 8px 14px; font-size: 12px; }

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex; align-items: center;
  background:
    radial-gradient(ellipse at 75% 30%, rgba(45,106,79,0.35), transparent 55%),
    linear-gradient(160deg, var(--ink) 0%, var(--ink-soft) 65%, var(--pcb-green) 130%);
  color: var(--paper);
  overflow: hidden;
  padding: 100px 24px 60px;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}
.portrait-frame {
  position: relative;
  width: 96px; height: 96px;
  margin-bottom: 28px;
}
.portrait-img {
  width: 96px; height: 96px;
  object-fit: cover;
  border-radius: 6px;
  border: 2px solid var(--copper);
  box-shadow: 0 0 0 6px rgba(201,124,61,0.12);
}
.portrait-tag {
  position: absolute; bottom: -10px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.06em;
  background: var(--ink); color: var(--copper-bright);
  padding: 2px 8px; border-radius: 2px;
  white-space: nowrap;
  border: 1px solid var(--copper);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--copper-bright);
  margin: 0 0 18px;
  text-transform: uppercase;
}
.hero-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(56px, 10vw, 108px);
  line-height: 0.94;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  margin: 0 0 20px;
  max-width: 680px;
}
.hero-role {
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--paper);
  font-weight: 500;
  margin: 0 0 12px;
  max-width: 560px;
}
.hero-sub {
  color: var(--muted-light);
  max-width: 520px;
  margin: 0 0 28px;
  font-size: 15.5px;
}
.hero-sub strong { color: var(--copper-bright); }

.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 30px;
}
.meta-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  border: 1px solid var(--line-light);
  padding: 7px 12px;
  border-radius: 3px;
  color: var(--muted-light);
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .btn-outline { border-color: var(--line-light); color: var(--paper); }
.hero .btn-outline:hover { border-color: var(--copper-bright); color: var(--copper-bright); }

.hero-diagram {
  position: absolute;
  right: -6%; top: 50%; transform: translateY(-50%);
  width: min(56vw, 620px);
  opacity: 0.9;
  z-index: 1;
}
.circuit-svg { width: 100%; height: auto; }
.trace {
  fill: none;
  stroke: rgba(201,124,61,0.35);
  stroke-width: 1.4;
  stroke-dasharray: 6 5;
}
.pulse { fill: var(--copper-bright); filter: drop-shadow(0 0 4px var(--copper-bright)); }
.node {
  fill: var(--ink-soft);
  stroke: var(--copper);
  stroke-width: 1.6;
}
.node-center { fill: var(--pcb-green); stroke: var(--copper-bright); stroke-width: 2; }
.node-dim { opacity: 0.6; }
.node-label {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  fill: var(--paper);
  text-anchor: middle;
}
.node-label-main { font-size: 18px; fill: var(--copper-bright); }
.node-label-sub { font-size: 8px; fill: var(--muted-light); }
.node-label-small { font-size: 10px; }

@media (max-width: 860px) {
  .hero-diagram { display: none; }
}

/* ============================================
   SECTIONS (shared)
   ============================================ */
.section { position: relative; z-index: 1; padding: 96px 24px; }
.section-alt { background: var(--paper-dim); }
.section-dark {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-soft) 100%);
  color: var(--paper);
}
.section-inner { max-width: var(--container); margin: 0 auto; }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--copper);
  margin: 0 0 14px;
}
.section-eyebrow-light { color: var(--copper-bright); }
.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  margin: 0 0 36px;
  text-transform: uppercase;
  letter-spacing: -0.005em;
}
.section-title-light { color: var(--paper); }
.section-note { font-size: 14px; color: var(--muted); margin: -20px 0 36px; }
.section-note a { color: var(--copper); border-bottom: 1px solid var(--copper); }
.sub-title {
  font-family: var(--font-display);
  font-size: 20px;
  text-transform: uppercase;
  margin: 56px 0 22px;
  color: var(--ink);
}

/* ============================================
   ABOUT
   ============================================ */
.about-text { max-width: 760px; font-size: 17px; color: var(--ink-soft); margin-bottom: 26px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  font-family: var(--font-mono);
  font-size: 12px;
  border: 1px solid var(--line);
  padding: 6px 12px;
  border-radius: 3px;
  color: var(--muted);
}
.tag-mono {
  background: var(--paper-dim);
  border-color: transparent;
  color: var(--ink-soft);
}

/* ============================================
   TIMELINE (experience)
   ============================================ */
.timeline { position: relative; padding-left: 30px; border-left: 1.5px dashed var(--line); }
.tl-item { position: relative; padding-bottom: 52px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-marker {
  position: absolute; left: -36px; top: 4px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--copper);
  box-shadow: 0 0 0 4px var(--paper-dim), 0 0 0 5px var(--line);
}
.tl-head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 16px;
  margin-bottom: 4px;
}
.tl-head h3 { font-size: 19px; font-weight: 700; }
.tl-date {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--copper);
  white-space: nowrap;
}
.tl-company { font-weight: 500; color: var(--muted); margin: 0 0 14px; font-size: 14.5px; }
.tl-content ul { margin-bottom: 16px; }
.tl-content li {
  position: relative; padding-left: 18px; margin-bottom: 8px;
  font-size: 15px; color: var(--ink-soft);
}
.tl-content li::before {
  content: "▸"; position: absolute; left: 0; color: var(--copper); font-size: 12px; top: 3px;
}
.tl-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ============================================
   PROJECTS
   ============================================ */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.project-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px;
  display: flex; flex-direction: column;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.project-card:hover {
  border-color: var(--copper);
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(15,27,22,0.08);
}
.pc-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.pc-head .pc-domain { color: var(--copper); font-weight: 600; }
.project-card h3 {
  font-size: 17px; font-weight: 700; margin-bottom: 8px; line-height: 1.3;
}
.project-card p {
  font-size: 14px; color: var(--muted); margin: 0 0 16px; flex-grow: 1;
}
.pc-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.pc-tags span {
  font-family: var(--font-mono);
  font-size: 10.5px;
  background: var(--paper-dim);
  padding: 4px 8px;
  border-radius: 3px;
  color: var(--ink-soft);
}
.pc-link {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--copper);
  border-top: 1px solid var(--line);
  padding-top: 12px;
  margin-top: auto;
}
.pc-link:hover { color: var(--copper-bright); }

/* ============================================
   SKILLS / PINOUT
   ============================================ */
.pinout {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 34px 40px;
}
.pin-group h3 {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper-bright);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-light);
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
  border: 1px solid var(--line-light);
  padding: 6px 11px;
  border-radius: 3px;
  transition: border-color 0.2s, color 0.2s;
}
.chip:hover { border-color: var(--copper-bright); color: var(--copper-bright); }

/* ============================================
   EDUCATION
   ============================================ */
.edu-list { display: flex; flex-direction: column; gap: 26px; }
.edu-item {
  display: grid; grid-template-columns: 160px 1fr; gap: 20px;
  padding-bottom: 24px; border-bottom: 1px solid var(--line);
}
.edu-item:last-child { border-bottom: none; }
.edu-date { font-family: var(--font-mono); font-size: 12.5px; color: var(--copper); }
.edu-item h3 { font-size: 17px; margin-bottom: 6px; }
.edu-item p { font-size: 14.5px; color: var(--muted); margin: 0; }

.cert-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 10px;
}
.cert {
  font-size: 13.5px; color: var(--ink-soft);
  border: 1px solid var(--line); border-radius: 4px;
  padding: 10px 14px;
}

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.assoc-list li {
  font-size: 14.5px; color: var(--ink-soft); margin-bottom: 8px;
  padding-left: 16px; position: relative;
}
.assoc-list li::before { content: "—"; position: absolute; left: 0; color: var(--copper); }

@media (max-width: 700px) {
  .edu-item { grid-template-columns: 1fr; gap: 6px; }
  .two-col { grid-template-columns: 1fr; }
}

/* ============================================
   CONTACT
   ============================================ */
.contact-inner { text-align: left; }
.contact-sub { color: var(--muted-light); max-width: 560px; margin-bottom: 40px; font-size: 15.5px; }
.contact-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.contact-card {
  border: 1px solid var(--line-light);
  border-radius: 5px;
  padding: 20px;
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color 0.2s, background 0.2s;
}
.contact-card:hover { border-color: var(--copper-bright); background: rgba(201,124,61,0.06); }
.contact-card-static:hover { background: none; border-color: var(--line-light); cursor: default; }
.contact-label {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted-light);
}
.contact-value { font-size: 15px; font-weight: 500; color: var(--paper); }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--ink);
  color: var(--muted-light);
  text-align: center;
  padding: 26px 24px;
  font-size: 12.5px;
  font-family: var(--font-mono);
  border-top: 1px solid var(--line-light);
}

/* ============================================
   REVEAL ANIMATION
   ============================================ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }