:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-alt: #e7efff;
  --primary: #1d4ed8;
  --primary-dark: #163ea6;
  --text: #111827;
  --muted: #52607a;
  --border: #dfe7f3;
  --shadow: 0 16px 36px rgba(15, 23, 42, 0.08);
  --radius: 20px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 88px;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

main {
  flex: 1;
}

body.is-loading {
  pointer-events: none;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 74px;
}

.brand {
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.nav-links a {
  font-size: 0.94rem;
  color: var(--muted);
  font-weight: 600;
}

.hero {
  padding: 50px 0 40px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr;
  gap: 34px;
  align-items: center;
}

.eyebrow {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-dark);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-heading .eyebrow,
.page-header .eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.62rem;
  margin-bottom: 14px;
  border: 1px solid rgba(29, 78, 216, 0.12);
  border-radius: 999px;
  background: rgba(29, 78, 216, 0.08);
}

.hero-copy h1 {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
  line-height: 1.05;
  letter-spacing: -0.06em;
  margin: 0 0 18px;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 670px;
}

.cta-row {
  display: flex;
  gap: 16px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1.2rem;
  border-radius: 12px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.btn.primary {
  background: #2563eb;
  color: white;
  border: 1px solid #1d4ed8;
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.18);
}

.btn.primary:hover {
  background: var(--primary);
}

.btn.secondary {
  background: var(--surface-alt);
  border: 1px solid rgba(29, 78, 216, 0.35);
  color: var(--primary-dark);
  box-shadow: 0 4px 10px rgba(29, 78, 216, 0.06);
}

.btn.secondary:hover {
  background: #e1ebff;
}

.quick-meta {
  display: flex;
  gap: 16px;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  flex-wrap: wrap;
}

.quick-meta li {
  background: white;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted);
}

.hero-panel {
  display: flex;
  justify-content: center;
}

.panel-card {
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 26px;
  padding: 30px 28px;
  width: min(100%, 380px);
}

.mini-label {
  margin: 0 0 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--primary-dark);
}

.panel-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.panel-card li {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem 1rem;
  font-weight: 600;
}

.section {
  padding: 28px 0;
}

.alt-section {
  background: var(--surface-alt);
}

.section-heading {
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.15;
  letter-spacing: -0.05em;
}

.blog-intro {
  max-width: 760px;
}

.blog-intro p {
  max-width: 680px;
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

@media (min-width: 900px) {
  .blog-intro h2 {
    white-space: nowrap;
    font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  }
}

.blog-category + .blog-category {
  margin-top: 42px;
}

.blog-landing-header {
  max-width: 820px;
}

.blog-landing-header h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  line-height: 1.1;
}

.blog-category .section-heading {
  margin-bottom: 16px;
}

.blog-category .section-heading h2 {
  font-size: clamp(1.7rem, 2.6vw, 2.3rem);
}

.blog-category .section-heading p:not(.eyebrow) {
  max-width: 760px;
  color: var(--muted);
}

.blog-category-summary {
  margin: 0;
  color: var(--muted);
}

.section-link {
  display: inline-flex;
  margin-top: 16px;
}

.about-grid,
.card-grid {
  display: grid;
  gap: 18px;
}

.about-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.four-col {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px 24px;
}

.card p,
.card li {
  color: var(--muted);
}

.topic-card h3,
.project-card h3,
.blog-item h3 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: 1.3rem;
}

.topic-card a,
.project-card a,
.blog-item a {
  display: inline-block;
  margin-top: 12px;
  font-weight: 700;
}

.project-tag {
  display: inline-block;
  margin-bottom: 12px;
  background: rgba(29, 78, 216, 0.08);
  color: var(--primary-dark);
  border-radius: 999px;
  padding: 0.45rem 0.7rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
}

.year {
  display: inline-flex;
  align-items: center;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.04em;
}

.timeline-content h3 {
  margin: 0 0 8px;
  font-size: 1.3rem;
}

.timeline-content p {
  margin: 0;
  color: var(--muted);
}

.blog-list {
  display: grid;
  gap: 18px;
}

.blog-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  box-shadow: var(--shadow);
}

.date {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--primary-dark);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.blog-item p {
  margin: 0;
  color: var(--muted);
}

.page-shell {
  padding: 40px 0 50px;
}

.page-header {
  margin-bottom: 20px;
}

.page-header h1 {
  margin: 0 0 10px;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.06em;
}

.contact-header h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.page-header p {
  color: var(--muted);
  margin: 0;
  max-width: 760px;
}

.resume-page-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.resume-page-heading .page-header {
  margin-bottom: 0;
}

.resume-download {
  flex: 0 0 auto;
}

/* Blog category pages use a compact, consistently left-aligned heading. */
.blog-section-content {
  text-align: left;
}

/* Included category pages already sit inside the blog container. */
#blog > .container > .blog-section-content {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
}

#blog > .container > .blog-section-content + .blog-section-content {
  margin-top: 40px;
}

.blog-section-header h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.back-link {
  display: inline-flex;
  align-items: center;
  margin-bottom: 16px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.back-link:hover {
  color: var(--primary-dark);
}

.list-grid {
  display: grid;
  gap: 16px;
}

.project-section + .project-section {
  margin-top: 48px;
}

.list-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}

.list-card h2,
.list-card h3 {
  margin-top: 0;
}

.meta-role {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.resume-box {
  display: grid;
  gap: 1px;
}

@media (min-width: 821px) {
  .resume-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
  }
}

.resume-box ul {
  margin: 18px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.experience-section {
  margin-top: 16px;
}

.experience-heading {
  margin: 0 0 12px;
  color: var(--primary-dark);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.experience-list {
  display: grid;
  gap: 1px;
}

.experience-list .project-card {
  margin-top: 0 !important;
}

.article-container {
  max-width: 860px;
}

.article-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 32px 32px 40px;
  line-height: 1.58;
}

.article-card h1 {
  margin: 0 0 12px;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  letter-spacing: -0.06em;
}

.article-card h2 {
  margin-top: 1.65rem;
  margin-bottom: 0.55rem;
  font-size: clamp(1.5rem, 2vw, 2rem);
  letter-spacing: -0.04em;
}

.article-card h3 {
  margin-top: 1.2rem;
  margin-bottom: 0.4rem;
}

.article-card p,
.article-card li {
  color: var(--muted);
  font-size: 1.03rem;
}

.article-card p {
  margin-top: 0;
  margin-bottom: 0.85rem;
}

.article-card ul,
.article-card ol {
  margin-top: 0.35rem;
  margin-bottom: 0.95rem;
}

.article-card blockquote {
  margin: 1rem 0 1.2rem;
  padding: 1rem 1.2rem;
  border-left: 4px solid var(--primary);
  background: var(--surface-alt);
  border-radius: 0 12px 12px 0;
}

.article-card blockquote p {
  margin: 0;
  color: var(--text);
  font-style: italic;
}

.article-card pre {
  max-width: 100%;
  margin: 0.9rem 0 1.25rem;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  font: 0.84rem/1.55 "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.article-card pre code {
  display: block;
  max-width: 100%;
  font: inherit;
  white-space: inherit;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.article-card pre.code-block {
  color: #e5edf9;
  background: #172033;
  border-color: #273858;
}

.article-card pre.json-block {
  color: #31504d;
  background: #eef8f4;
  border-color: #b9ddd1;
}

.article-card pre.prompt-block {
  color: #5d4519;
  background: #fff7e6;
  border-color: #e8d29b;
}

.article-card ul,
.article-card ol {
  padding-left: 1.3rem;
}

.article-meta {
  margin-top: 0;
  color: var(--primary-dark);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.article-diagram {
  margin: 20px 0;
  max-width: 100%;
  overflow: hidden;
}

.diagram-trigger {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 16px;
  background: transparent;
  cursor: zoom-in;
}

.diagram-trigger:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 4px;
}

.diagram-trigger img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  background: var(--surface);
}

.diagram-trigger:hover img {
  box-shadow: 0 18px 34px rgba(15, 23, 42, 0.16);
}

.diagram-lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 28px;
  background: rgba(15, 23, 42, 0.84);
}

.diagram-lightbox[hidden] {
  display: none;
}

.diagram-lightbox img {
  display: block;
  width: auto;
  max-width: min(96vw, 1400px);
  max-height: 88vh;
  object-fit: contain;
  border-radius: 10px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  background: var(--surface);
}

.diagram-lightbox-close {
  position: fixed;
  top: 16px;
  right: 18px;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
}

.diagram-lightbox-close:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 3px;
}

body.lightbox-open {
  overflow: hidden;
}

.article-diagram figcaption {
  margin-top: 7px;
  color: var(--muted);
  font-size: 0.9rem;
}

.article-card .workflow-note {
  display: grid;
  gap: 0.2rem;
  margin: 1.5rem 0 1rem;
  padding: 0.9rem 1rem 0.95rem 1.1rem;
  border-left: 4px solid var(--primary);
  border-radius: 0 10px 10px 0;
  background: linear-gradient(90deg, var(--surface-alt), rgba(231, 239, 255, 0.28));
  color: var(--text);
}

.article-card .workflow-note strong {
  color: var(--primary-dark);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-card .workflow-note span {
  color: var(--muted);
  font-size: 0.96rem;
}

.article-card .technical-group {
  margin: 2.2rem 0 1.8rem;
  padding: 1.4rem 1.2rem 0.8rem;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(231, 239, 255, 0.42), rgba(255, 255, 255, 0));
}

.article-card .technical-group-heading {
  margin-bottom: 1.4rem;
  padding-left: 1rem;
  border-left: 4px solid var(--primary);
}

.article-card .technical-group-heading h2 {
  margin: 0 0 0.45rem;
}

.article-card .technical-group-heading p:last-child {
  max-width: 62ch;
  margin: 0;
  font-size: 0.96rem;
}

.article-card .technical-group-kicker {
  margin: 0 0 0.25rem;
  color: var(--primary-dark);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.article-card .table-wrap {
  margin: 1rem 0 1.4rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.article-card table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 0.92rem;
  line-height: 1.45;
}

.article-card caption {
  padding: 0.85rem 1rem;
  color: var(--primary-dark);
  background: var(--surface-alt);
  font-size: 0.82rem;
  font-weight: 800;
  text-align: left;
}

.article-card th,
.article-card td {
  padding: 0.8rem 0.9rem;
  border-top: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.article-card th {
  color: var(--text);
  background: #f8fafc;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-card td {
  color: var(--muted);
}

.article-card tbody tr:nth-child(even) td {
  background: rgba(231, 239, 255, 0.38);
}

.article-card .vote-cell {
  color: var(--text);
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.article-card .outcome-upheld,
.article-card .outcome-escalate,
.article-card .outcome-rejected {
  font-weight: 800;
  white-space: nowrap;
}

.article-card .outcome-upheld {
  color: #087443;
}

.article-card .outcome-escalate {
  color: #9a6700;
}

.article-card .outcome-rejected {
  color: #b42318;
}

.article-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.site-footer {
  background: #0e172a;
  color: white;
  padding: 32px 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.brand-footer {
  margin: 0 0 4px;
  font-size: 1.2rem;
  font-weight: 800;
}

.footer-copy {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
}

.socials {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.socials a {
  color: white;
  font-weight: 600;
}

@media (max-width: 820px) {
  .hero-grid,
  .about-grid,
  .three-col,
  .four-col,
  .project-grid,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .nav {
    flex-direction: column;
    justify-content: center;
    padding: 16px 0;
  }

  .nav-links {
    justify-content: center;
  }

  .hero {
    padding-top: 60px;
  }

  .resume-page-heading {
    align-items: flex-start;
  }

  .resume-download,
  .resume-download .btn {
    width: 100%;
  }

  .list-card,
  .experience-list .project-card {
    padding: 20px;
  }

  .page-shell {
    padding-top: 24px;
  }

  .article-card {
    padding: 24px 18px 30px;
    border-radius: 16px;
  }

  .article-card h1 {
    font-size: clamp(2rem, 9vw, 2.7rem);
    line-height: 1.08;
  }

  .article-card h2 {
    margin-top: 1.4rem;
    margin-bottom: 0.45rem;
  }

  .article-card h3 {
    margin-top: 1rem;
    margin-bottom: 0.3rem;
  }

  .article-card p,
  .article-card li {
    font-size: 1rem;
  }

  .article-card p {
    margin-bottom: 0.72rem;
  }

  .article-card blockquote {
    margin-inline: 0;
    padding: 0.9rem 1rem;
  }

  .article-card pre {
    margin-inline: 0;
    padding: 0.85rem 0.8rem;
    font-size: 0.76rem;
    line-height: 1.55;
  }

  .article-diagram {
    margin-inline: 0;
  }

  .article-diagram figcaption {
    font-size: 0.84rem;
  }

  .article-card .workflow-note {
    margin-top: 1.5rem;
    padding: 0.8rem 0.85rem 0.85rem 0.95rem;
  }

  .article-card .workflow-note span {
    font-size: 0.92rem;
  }

  .article-card .technical-group {
    margin: 1.8rem 0 1.6rem;
    padding: 1rem 0.75rem 0.6rem;
  }

  .article-card .technical-group-heading {
    margin-bottom: 1.5rem;
    padding-left: 0.8rem;
  }

  .diagram-lightbox {
    padding: 16px;
  }

  .diagram-lightbox img {
    max-width: 94vw;
    max-height: 82vh;
  }

  .diagram-lightbox-close {
    top: 10px;
    right: 10px;
  }

  .article-card .table-wrap {
    margin-inline: 0;
  }

  .article-card table {
    min-width: 580px;
    font-size: 0.88rem;
  }
}