/* ── FONTS ───────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Lora:ital,wght@0,400;0,600;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── TOKENS ──────────────────────────────────────────── */
:root {
  --bg:         #f9f8f6;
  --surface:    #ffffff;
  --surface2:   #f2f0ec;
  --border:     #e4e0d8;
  --border2:    #ccc8c0;
  --text:       #18160f;
  --text2:      #5a5650;
  --text3:      #9c9790;
  --accent:     #1d4ed8;      /* blue — links, highlights */
  --accent-bg:  #eff4ff;
  --red:        #b91c1c;      /* AppSec badge */
  --red-bg:     #fef2f2;
  --green:      #15803d;
  --green-bg:   #f0fdf4;
  --amber:      #92400e;
  --amber-bg:   #fffbeb;
  --mono:       'JetBrains Mono', 'Courier New', monospace;
  --sans:       'Inter', system-ui, sans-serif;
  --serif:      'Lora', Georgia, serif;
  --max:        760px;
  --wide:       1080px;
  --radius:     10px;
}

/* ── RESET ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
a:hover { color: var(--red); }

/* ── NAV ─────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(249,248,246,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -.01em;
}
.nav-brand:hover { color: var(--text); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: all .12s;
}
.nav-links a:hover { background: var(--surface2); color: var(--text); }
.nav-links a.active { color: var(--accent); background: var(--accent-bg); }
.nav-li-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #0a66c2;
  color: white !important;
  padding: 6px 14px !important;
  border-radius: 6px;
  font-size: 13px !important;
  font-weight: 500 !important;
  text-decoration: none !important;
  transition: background .12s !important;
}
.nav-li-btn:hover { background: #004182 !important; color: white !important; }

/* ── HERO (homepage) ─────────────────────────────────── */
.hero {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 4rem;
  align-items: start;
}
.hero-eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.hero h1 {
  font-family: var(--sans);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -.03em;
  color: var(--text);
  margin-bottom: 1.25rem;
}
.hero-desc {
  font-size: 16px;
  color: var(--text2);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 480px;
}
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 8px;
  text-decoration: none;
  transition: all .15s;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--text); color: white; }
.btn-primary:hover { background: #333; color: white; }
.btn-ghost { background: var(--surface); color: var(--text2); border: 1px solid var(--border2); }
.btn-ghost:hover { background: var(--surface2); color: var(--text); }
.btn-blue { background: #0a66c2; color: white; }
.btn-blue:hover { background: #004182; color: white; }

/* Skills card */
.skills-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: sticky;
  top: 76px;
}
.skills-card h3 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}
.skill-tag {
  display: inline-block;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  color: var(--text2);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 99px;
  margin: 3px;
}

/* ── PROJECT CARDS ───────────────────────────────────── */
.projects-section {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 1.5rem 5rem;
}
.section-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: all .2s;
  position: relative;
}
.project-card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  color: inherit;
}
.project-card .tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  width: fit-content;
}
.tag-blue { background: var(--accent-bg); color: var(--accent); }
.tag-red  { background: var(--red-bg); color: var(--red); }
.tag-green { background: var(--green-bg); color: var(--green); }
.tag-amber { background: var(--amber-bg); color: var(--amber); }
.project-card h3 {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.3;
  letter-spacing: -.02em;
}
.project-card p {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.65;
  flex: 1;
}
.project-arrow {
  font-size: 13px;
  color: var(--accent);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: .25rem;
}

/* ── PAGE HEADER ─────────────────────────────────────── */
.page-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 1.5rem;
}
.page-header-inner {
  max-width: var(--wide);
  margin: 0 auto;
}
.page-header .eyebrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.page-header h1 {
  font-family: var(--sans);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -.03em;
  color: var(--text);
  margin-bottom: .5rem;
}
.page-header .sub {
  font-size: 15px;
  color: var(--text2);
}

/* ── ABOUT PAGE ──────────────────────────────────────── */
.about-wrap {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 4rem;
  align-items: start;
}
.about-prose h2 {
  font-family: var(--sans);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text);
  margin: 2.5rem 0 .75rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  letter-spacing: -.01em;
}
.about-prose h2:first-child { margin-top: 0; padding-top: 0; border-top: none; }
.about-prose p {
  font-size: 15px;
  color: var(--text2);
  line-height: 1.8;
  margin-bottom: 1rem;
}
.about-prose ul {
  padding-left: 1.25rem;
  margin-bottom: 1rem;
}
.about-prose li {
  font-size: 15px;
  color: var(--text2);
  line-height: 1.8;
  margin-bottom: .35rem;
}
.about-sidebar { position: sticky; top: 76px; }
.about-widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.about-widget h3 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .9rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}
.cert-item {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--text2);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
}
.cert-item:last-child { border-bottom: none; }
.cert-item strong { display: block; color: var(--text); font-weight: 500; font-size: 12px; }

/* ── DIAGRAM ─────────────────────────────────────────── */
.diagram-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 2rem 0;
  overflow: hidden;
}
.diagram-wrap figcaption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  text-align: center;
  margin-top: 1rem;
  letter-spacing: .06em;
}

/* ── RESUME ──────────────────────────────────────────── */
.resume-wrap {
  max-width: 760px;
  margin: 3rem auto;
  padding: 0 1.5rem;
}
.resume-section { margin-bottom: 2.5rem; }
.resume-section h2 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--border);
}
.resume-job { margin-bottom: 1.75rem; }
.resume-job-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: .35rem;
}
.resume-job-title {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -.01em;
}
.resume-job-co {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text2);
}
.resume-job-date {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
}
.resume-job ul {
  padding-left: 1.25rem;
  margin-top: .5rem;
}
.resume-job li {
  font-size: 14px;
  color: var(--text2);
  line-height: 1.75;
  margin-bottom: .3rem;
}
.resume-cert {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: .25rem;
}
.resume-cert:last-child { border-bottom: none; }
.resume-cert-name {
  font-family: var(--sans);
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}
.resume-cert-issuer {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--text3);
}
.download-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: .75rem;
}
.download-bar p {
  font-size: 13px;
  color: var(--text2);
}

/* ── SOC LAB BLOG ────────────────────────────────────── */
.blog-wrap {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 3rem;
  align-items: start;
}
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  margin-bottom: 1rem;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: all .18s;
}
.post-card:hover {
  border-color: var(--border2);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.05);
  color: inherit;
}
.post-card.upcoming { opacity: .55; border-style: dashed; cursor: default; }
.post-card.upcoming:hover { transform: none; box-shadow: none; }
.post-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: .65rem;
  flex-wrap: wrap;
}
.part-chip {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: .04em;
}
.date-chip { font-size: 12px; color: var(--text3); font-family: var(--mono); }
.post-card h2 {
  font-family: var(--sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -.02em;
  margin-bottom: .5rem;
}
.post-card .excerpt {
  font-size: 13.5px;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: .85rem;
}
.post-read-more {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Blog sidebar */
.blog-sidebar { position: sticky; top: 76px; }
.blog-widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.blog-widget h3 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .9rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}
.lab-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.lab-item:last-child { border-bottom: none; }
.lab-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.lab-dot.done { background: var(--green); }
.lab-dot.wip  { background: var(--amber); }
.lab-dot.todo { background: var(--border2); }
.lab-name { flex: 1; color: var(--text2); }
.lab-name.done { color: var(--text); }
.status-pill {
  font-family: var(--mono);
  font-size: 10px;
  padding: 1px 7px;
  border-radius: 99px;
  font-weight: 500;
}
.s-done  { background: var(--green-bg); color: var(--green); }
.s-wip   { background: var(--amber-bg); color: var(--amber); }
.s-todo  { background: var(--surface2); color: var(--text3); }

/* ── ARTICLE ─────────────────────────────────────────── */
.article-outer {
  max-width: var(--wide);
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 3rem;
  align-items: start;
}
.article-header { margin-bottom: 2rem; }
.article-header h1 {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: .75rem;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text3);
  font-family: var(--mono);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

/* Prose typography */
.prose { font-family: var(--serif); font-size: 17px; line-height: 1.85; color: var(--text); }
.prose p { margin-bottom: 1.5rem; }
.prose h2 {
  font-family: var(--sans);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin: 2.5rem 0 .75rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
  letter-spacing: -.01em;
}
.prose h3 {
  font-family: var(--sans);
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.75rem 0 .4rem;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.prose blockquote {
  border-left: 3px solid var(--accent);
  background: var(--accent-bg);
  padding: .75rem 1.25rem;
  margin: 1.75rem 0;
  border-radius: 0 6px 6px 0;
}
.prose blockquote p {
  margin: 0;
  font-style: italic;
  color: var(--text2);
  font-size: 1rem;
}
.prose code {
  font-family: var(--mono);
  font-size: .82em;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: .12em .4em;
  border-radius: 4px;
  color: var(--red);
}
.prose pre {
  background: #111;
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  overflow-x: auto;
  border: 1px solid #222;
}
.prose pre code {
  background: none; border: none; padding: 0;
  color: #d4d4d4; font-size: 13px; line-height: 1.7;
}
.prose ul, .prose ol { padding-left: 1.5rem; margin-bottom: 1.5rem; }
.prose li { margin-bottom: .4rem; }
.prose strong { font-weight: 600; color: var(--text); font-style: normal; }
.prose a { color: var(--accent); }
.prose figure { margin: 2rem 0; }

/* Article sidebar TOC */
.toc-nav { position: sticky; top: 76px; }
.toc-nav h3 {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text3);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: .75rem;
}
.toc-nav a {
  display: block;
  font-size: 12px;
  font-family: var(--sans);
  color: var(--text3);
  text-decoration: none;
  padding: 5px 0 5px 12px;
  border-left: 2px solid var(--border);
  line-height: 1.4;
  transition: all .12s;
}
.toc-nav a:hover { color: var(--text2); border-left-color: var(--border2); }
.toc-nav a.active { color: var(--accent); border-left-color: var(--accent); font-weight: 500; }

/* ── FOOTER ──────────────────────────────────────────── */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2rem 1.5rem;
  margin-top: 4rem;
}
.footer-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-note { font-size: 13px; color: var(--text3); }
.footer-links { display: flex; gap: 1.5rem; list-style: none; }
.footer-links a { font-size: 13px; color: var(--text3); text-decoration: none; }
.footer-links a:hover { color: var(--text); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 760px) {
  .hero { grid-template-columns: 1fr; gap: 2rem; }
  .skills-card { display: none; }
  .about-wrap { grid-template-columns: 1fr; }
  .blog-wrap { grid-template-columns: 1fr; }
  .article-outer { grid-template-columns: 1fr; }
  .toc-nav { display: none; }
  .nav-links .hide-mobile { display: none; }
}