/* troyktech.com — original design. No external assets. */
:root {
  --bg: #070b12;
  --bg-alt: #0a111b;
  --panel: #0e1724;
  --panel-2: #121d2d;
  --line: #1c2a3d;
  --line-strong: #2a3d57;
  --text: #e6edf5;
  --muted: #9aabbf;
  --dim: #6f8197;
  --accent: #3ee6c4;
  --accent-2: #5aa9ff;
  --accent-ink: #04201b;
  --radius: 14px;
  --wrap: 1120px;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, p, ul, ol, pre { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent); color: var(--accent-ink); }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.dim { color: var(--dim); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 10px 16px; border-radius: 8px; font-weight: 600; }
.skip:focus { top: 16px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 11, 18, 0.82);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-family: var(--mono); font-size: 0.95rem; }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px;
  border: 1.5px solid var(--accent); border-radius: 9px;
  color: var(--accent); font-weight: 700; font-size: 0.8rem; letter-spacing: 0.02em;
}
.site-nav ul { display: flex; align-items: center; gap: 4px; }
.site-nav a {
  display: block; padding: 8px 12px; border-radius: 8px;
  color: var(--muted); font-size: 0.94rem;
}
.site-nav a:hover { color: var(--text); background: var(--panel); text-decoration: none; }
.site-nav a[aria-current="true"] { color: var(--accent); }
.site-nav a.nav-cta { margin-left: 8px; border: 1px solid var(--line-strong); color: var(--text); }
.site-nav a.nav-cta:hover { border-color: var(--accent); }
.nav-toggle { display: none; width: 44px; height: 44px; background: none; border: 1px solid var(--line-strong); border-radius: 10px; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle-bars, .nav-toggle-bars::before, .nav-toggle-bars::after { content: ""; display: block; width: 18px; height: 2px; background: var(--text); border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before { position: absolute; top: -6px; }
.nav-toggle-bars::after { position: absolute; top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 96px 0 104px; border-bottom: 1px solid var(--line); }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(ellipse 75% 70% at 50% 35%, #000 20%, transparent 78%);
  mask-image: radial-gradient(ellipse 75% 70% at 50% 35%, #000 20%, transparent 78%);
}
.hero::after {
  content: ""; position: absolute; pointer-events: none;
  width: 720px; height: 720px; right: -220px; top: -280px;
  background: radial-gradient(circle, rgba(62, 230, 196, 0.16), rgba(90, 169, 255, 0.07) 45%, transparent 68%);
}
.hero-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 56px; align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 20px; }
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 0 rgba(62, 230, 196, 0.6); animation: pulse 2.4s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(62, 230, 196, 0); } 100% { box-shadow: 0 0 0 0 rgba(62, 230, 196, 0); } }
h1 { font-size: clamp(2.7rem, 7vw, 4.6rem); line-height: 1.02; letter-spacing: -0.035em; font-weight: 750; }
.lede { margin-top: 24px; max-width: 34em; color: var(--muted); font-size: 1.14rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 22px; border-radius: 10px;
  font-weight: 600; font-size: 0.98rem; border: 1px solid transparent;
  transition: transform .15s ease, background-color .15s ease, border-color .15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #63f0d4; }
.btn-ghost { border-color: var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 14px 36px; margin-top: 44px; padding-top: 26px; border-top: 1px solid var(--line); }
.hero-facts li { display: flex; flex-direction: column; gap: 2px; }
.k { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--dim); }
.v { font-size: 0.98rem; }

.terminal {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--line-strong); border-radius: var(--radius);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8), 0 0 0 1px rgba(62, 230, 196, 0.05);
  overflow: hidden;
}
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.terminal-title { margin-left: 10px; font-family: var(--mono); font-size: 0.78rem; color: var(--dim); }
.terminal-body { padding: 22px 22px 26px; font-family: var(--mono); font-size: 0.86rem; line-height: 1.8; color: var(--text); white-space: pre-wrap; overflow-wrap: anywhere; }
.terminal-body .c { color: var(--dim); }
.terminal-body .key { color: var(--accent-2); }
.terminal-body .ok { color: var(--accent); }
.cursor { display: inline-block; width: 8px; height: 1.05em; margin-left: 6px; vertical-align: text-bottom; background: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 40px; }
.section-num { font-family: var(--mono); font-size: 0.85rem; color: var(--accent); letter-spacing: 0.08em; }
.section-num::after { content: " /"; color: var(--line-strong); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.3rem); letter-spacing: -0.025em; line-height: 1.15; }
h3 { font-size: 1.14rem; line-height: 1.35; letter-spacing: -0.01em; }

.about-grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 56px; align-items: start; }
.prose p { color: var(--muted); max-width: 40em; }
.prose p + p { margin-top: 18px; }
.prose p:first-child { color: var(--text); font-size: 1.14rem; }
.stat-list { display: grid; gap: 14px; }
.stat-list li { display: grid; grid-template-columns: 96px 1fr; gap: 16px; align-items: center; padding: 18px 20px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); }
.stat { font-family: var(--mono); font-size: 1.55rem; font-weight: 700; color: var(--accent); letter-spacing: -0.02em; }
.stat-label { color: var(--muted); font-size: 0.92rem; line-height: 1.45; }

.card-grid { display: grid; gap: 20px; }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: border-color .2s ease, transform .2s ease;
}
.card:hover { border-color: var(--line-strong); }
.card h3 { display: flex; align-items: center; gap: 12px; }
.card-tag { font-family: var(--mono); font-size: 0.72rem; font-weight: 500; color: var(--accent); border: 1px solid rgba(62, 230, 196, 0.35); border-radius: 6px; padding: 2px 7px; letter-spacing: 0.04em; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chips li { font-size: 0.88rem; color: var(--text); background: var(--panel-2); border: 1px solid var(--line); border-radius: 999px; padding: 5px 13px; }
.chips.small { margin-top: 22px; }
.chips.small li { font-family: var(--mono); font-size: 0.76rem; color: var(--muted); padding: 3px 11px; }
.soft-skills { margin-top: 28px; color: var(--muted); font-size: 0.96rem; }
.soft-skills .k { margin-right: 12px; color: var(--accent); }

/* Experience */
.timeline { position: relative; display: grid; gap: 40px; }
.job { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 32px; }
.job-meta { padding-top: 3px; }
.job-dates { font-family: var(--mono); font-size: 0.86rem; color: var(--accent); }
.job-place { color: var(--dim); font-size: 0.9rem; margin-top: 2px; }
.job-body { position: relative; padding-left: 32px; border-left: 1px solid var(--line-strong); }
.job-body::before { content: ""; position: absolute; left: -5px; top: 9px; width: 9px; height: 9px; border-radius: 50%; background: var(--bg); border: 2px solid var(--accent); }
.job h3 { font-size: 1.24rem; }
.at { color: var(--muted); font-weight: 500; }
.at::before { content: "· "; color: var(--line-strong); }
.bullets { margin-top: 14px; display: grid; gap: 9px; }
.bullets li { position: relative; padding-left: 20px; color: var(--muted); font-size: 0.98rem; line-height: 1.6; }
.bullets li::before { content: ""; position: absolute; left: 2px; top: 0.72em; width: 7px; height: 1.5px; background: var(--accent); }

/* Projects and credentials */
.project-kind { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.project h3, .edu h3 { font-size: 1.3rem; }
.project > p:not(.project-kind) { color: var(--muted); margin-top: 10px; }
.cred-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.edu-sub { margin-top: 8px; color: var(--text); }
.edu-school { color: var(--dim); font-size: 0.95rem; margin-top: 2px; }
.cert-stack { display: grid; gap: 20px; }
.cert { display: flex; align-items: center; gap: 18px; }
.cert p { color: var(--muted); font-size: 0.93rem; }
.cert h3 { display: block; }
.cert-badge { flex: none; display: grid; place-items: center; width: 54px; height: 54px; border-radius: 12px; font-family: var(--mono); font-weight: 700; color: var(--accent); background: rgba(62, 230, 196, 0.08); border: 1px solid rgba(62, 230, 196, 0.35); }

/* Contact and footer */
.contact { border-bottom: 0; }
.contact-inner { text-align: center; max-width: 720px; }
.contact-inner h2 { margin-top: 10px; font-size: clamp(2rem, 5vw, 3rem); }
.contact-lede { margin: 18px auto 0; color: var(--muted); max-width: 34em; }
.contact-actions { margin-top: 30px; }
.contact-actions .btn { font-family: var(--mono); font-size: 0.94rem; overflow-wrap: anywhere; }
.contact-note { margin-top: 14px; color: var(--dim); font-size: 0.9rem; }
.site-footer { border-top: 1px solid var(--line); padding: 26px 0; font-size: 0.9rem; color: var(--muted); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px 24px; }

/* Scroll reveal (class added by JS only when motion is allowed) */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Responsive */
@media (max-width: 940px) {
  .hero { padding: 64px 0 72px; }
  .hero-grid, .about-grid, .cred-grid { grid-template-columns: minmax(0, 1fr); gap: 40px; }
  .card-grid.three { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 72px 0; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .site-nav { display: none; position: absolute; left: 0; right: 0; top: 100%; background: var(--bg); border-bottom: 1px solid var(--line); padding: 10px 24px 18px; }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; align-items: stretch; gap: 2px; }
  .site-nav a { padding: 12px; font-size: 1rem; }
  .site-nav a.nav-cta { margin: 8px 0 0; text-align: center; }
  .card-grid.two { grid-template-columns: minmax(0, 1fr); }
  .job { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .job-meta { display: flex; gap: 14px; align-items: baseline; padding-left: 33px; }
  .job-place { margin-top: 0; }
  .stat-list li { grid-template-columns: 80px 1fr; }
}
@media (max-width: 420px) {
  .wrap { padding: 0 18px; }
  .site-nav { padding: 10px 18px 18px; }
  .terminal-body { font-size: 0.78rem; padding: 18px 16px 22px; }
  .card { padding: 22px; }
  .hero-actions .btn { flex: 1 1 auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
@media print {
  .site-header, .hero-actions, .site-footer a, .nav-toggle { display: none; }
  body { background: #fff; color: #000; }
}