/* ==========================================================================
   Thomas Tartière: site styles
   One stylesheet, no framework. Tokens first, then base, then components,
   then page sections.
   ========================================================================== */

:root {
  --ink: #0d1b2a;
  --body: #445063;
  --muted: #556070;
  --rule: #e6e9ee;
  --border: #c9d0d9;
  --accent: #0b5563;
  --tint: #f6f8f9;
  --page: #ffffff;

  --sans: "Hanken Grotesk", "Helvetica Neue", Arial, sans-serif;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --container: 1120px;
  --gutter: 64px;
  --radius: 4px;
}

@media (max-width: 720px) {
  :root { --gutter: 20px; }
}

/* ---------- Base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main { flex: 1; }

h1, h2, h3, h4 {
  font-family: var(--sans);
  font-weight: 600;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}

h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 2.875rem); letter-spacing: -0.03em; line-height: 1.08; }
h2 { font-size: clamp(1.5rem, 1.25rem + 1vw, 1.875rem); letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; color: var(--body); }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }

img { max-width: 100%; height: auto; }

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

ul, ol { color: var(--body); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ---------- Layout helpers ---------- */

.container {
  max-width: calc(var(--container) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page { padding-top: 56px; padding-bottom: 80px; }

.page-head { margin-bottom: 40px; max-width: 720px; }
.page-head p { font-size: 18px; }

.label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink);
}

.muted { color: var(--muted); }
.accent { color: var(--accent); }
.num { font-variant-numeric: tabular-nums; }

.tint-band { background: var(--tint); padding: 56px 0 64px; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  padding: 11px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-primary:hover { background: #1c2e42; color: #fff; }
.btn-secondary { background: transparent; border-color: var(--border); color: var(--ink); }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }
.btn + .btn { margin-left: 10px; }

/* ---------- Section head and ruled lists ---------- */

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  border-top: 2px solid var(--ink);
  padding-top: 14px;
  margin-bottom: 4px;
}
.section-head h2 { font-size: 13px; font-weight: 600; letter-spacing: 0.07em; text-transform: uppercase; margin: 0; }
.section-head a { font-size: 14px; font-weight: 600; text-decoration: none; }
.section-head a:hover { text-decoration: underline; }

.ruled-list { list-style: none; margin: 0; padding: 0; }
.ruled-list > li { border-bottom: 1px solid var(--rule); padding: 14px 0; }

/* ---------- Header and navigation ---------- */

.site-header { border-bottom: 1px solid var(--rule); }

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
}

.site-name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.site-nav ul { list-style: none; margin: 0; padding: 0; }

.nav-links { display: flex; gap: 28px; }
.nav-links a, .nav-mobile a {
  font-size: 15px;
  color: var(--muted);
  text-decoration: none;
}
.nav-links a:hover, .nav-mobile a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-color: var(--accent); text-underline-offset: 8px; text-decoration-thickness: 2px; }
.site-nav a.nav-contact { color: var(--ink); font-weight: 600; }

.nav-mobile { display: none; position: relative; }
.nav-mobile summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 10px 9px;
}
.nav-mobile summary::-webkit-details-marker { display: none; }
.nav-mobile summary span { display: block; height: 2px; background: var(--ink); border-radius: 1px; }
.nav-mobile ul {
  position: absolute;
  right: 0;
  top: 48px;
  z-index: 10;
  min-width: 200px;
  background: var(--page);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(13, 27, 42, 0.08);
  padding: 8px 0;
}
.nav-mobile li a { display: block; padding: 10px 18px; font-size: 16px; }

@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav-mobile { display: block; }
}

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--rule); }
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  padding-bottom: 24px;
}
.footer-inner p { margin: 0; font-size: 14px; }
.social { display: flex; gap: 18px; list-style: none; margin: 0; padding: 0; }
.social a { color: var(--muted); display: inline-flex; }
.social a:hover { color: var(--ink); }

/* ---------- Projects ---------- */

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 36px; }
.filter {
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 500;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 7px 14px;
  cursor: pointer;
}
.filter:hover { color: var(--ink); border-color: var(--border); }
.filter[aria-pressed="true"] { color: #fff; background: var(--ink); border-color: var(--ink); }

.project-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 48px 40px; }
.project[hidden] { display: none; }
.project-thumb {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  margin-bottom: 18px;
}
.project h2 { font-size: 20px; letter-spacing: -0.01em; margin-bottom: 6px; }
.project h2 a { color: var(--ink); text-decoration: none; }
.project h2 a:hover { color: var(--accent); }
.project p { margin-bottom: 6px; }
.project-tech { font-size: 14px; }

@media (max-width: 720px) {
  .project-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ---------- Homepage ---------- */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 72px;
  align-items: end;
  padding: 64px 0 56px;
}
.credentials { color: var(--muted); font-weight: 500; letter-spacing: 0.06em; margin-bottom: 20px; }
.credentials .accent { font-weight: 600; }
.hero h1 { margin-bottom: 22px; max-width: 760px; }
.hero-intro { font-size: 18px; line-height: 1.6; max-width: 600px; margin-bottom: 30px; }
.hero-actions { margin: 0; }
.hero-photo {
  width: 240px;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 30%;
  border-radius: var(--radius);
  display: block;
}

.career { padding-bottom: 64px; }
.career-row {
  display: grid;
  grid-template-columns: 140px 230px minmax(0, 1fr);
  gap: 28px;
  font-size: 15px;
  line-height: 1.5;
}
.ruled-list > li.career-row { padding: 16px 0; }
.career-years { color: var(--accent); font-weight: 600; }
.career-role strong { display: block; font-weight: 600; color: var(--ink); }
.career-role .muted { font-size: 14px; }
.career-summary { color: var(--body); }

.home-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }

.link-list a { display: block; text-decoration: none; }
.link-list strong { display: block; font-size: 16.5px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; margin-bottom: 2px; }
.link-list .muted { font-size: 14px; }
.link-list a:hover strong { color: var(--accent); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 28px; padding-top: 40px; }
  .hero-photo { order: -1; width: 160px; }
  .career-row { grid-template-columns: 1fr; gap: 2px; }
  .home-columns { grid-template-columns: 1fr; gap: 48px; }
}

/* ---------- Writing: lists ---------- */

.article-list > li { padding: 24px 0; }
.article-item { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; align-items: start; }
.article-item.has-thumb { grid-template-columns: minmax(0, 1fr) 200px; }
.article-item h2 { font-size: 22px; letter-spacing: -0.015em; margin-bottom: 6px; }
.article-item h2 a { color: var(--ink); text-decoration: none; }
.article-item h2 a:hover { color: var(--accent); }
.article-meta { font-size: 14px; margin-bottom: 8px; }
.article-summary { margin: 0; max-width: 680px; }
.article-thumb img { display: block; width: 200px; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius); border: 1px solid var(--rule); }

.index-list > li { display: flex; justify-content: space-between; gap: 16px; }
.index-list a { color: var(--ink); text-decoration: none; font-weight: 500; }
.index-list a:hover { color: var(--accent); }

.pagination { display: flex; justify-content: space-between; align-items: center; margin-top: 32px; font-size: 15px; }
.pagination a { font-weight: 600; text-decoration: none; }

@media (max-width: 720px) {
  .article-item.has-thumb { grid-template-columns: minmax(0, 1fr); }
  .article-thumb { display: none; }
}

/* ---------- Writing: article page ---------- */

.article { max-width: 720px; margin: 0 auto; }
.article-head { margin-bottom: 40px; }
.article-head .label a { color: var(--muted); text-decoration: none; }
.article-head h1 { margin-bottom: 16px; }
.article-dek { font-size: 19px; line-height: 1.5; color: var(--body); margin-bottom: 14px; }
.article-head .article-meta { margin: 0; font-size: 15px; }

.prose {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.7;
  color: #2a3442;
  max-width: 68ch;
  overflow-wrap: break-word;
}
.prose p, .prose ul, .prose ol { color: inherit; margin: 0 0 1.4em; }
.prose h2, .prose h3, .prose h4 { font-family: var(--sans); color: var(--ink); scroll-margin-top: 24px; }
.prose h2 { font-size: 26px; margin: 2.2em 0 0.7em; padding-top: 1em; border-top: 1px solid var(--rule); }
.prose > h2:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
.prose h3 { font-size: 21px; margin: 1.8em 0 0.6em; }
.prose h4 { font-size: 18px; margin: 1.5em 0 0.5em; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin-bottom: 0.5em; }
.prose li > ul, .prose li > ol { margin: 0.5em 0 0.6em; }
.prose a { color: var(--accent); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose img { display: block; margin: 2em auto; border-radius: var(--radius); }
.prose blockquote {
  margin: 1.8em 0;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--accent);
  color: var(--body);
  font-style: italic;
}
.prose table { width: 100%; border-collapse: collapse; font-family: var(--sans); font-size: 15px; margin: 1.8em 0; display: block; overflow-x: auto; }
.prose th, .prose td { border-bottom: 1px solid var(--rule); padding: 8px 10px; text-align: left; vertical-align: top; }
.prose th { color: var(--ink); font-weight: 600; border-bottom-color: var(--border); }
.prose :not(pre) > code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--tint);
  border: 1px solid var(--rule);
  border-radius: 3px;
  padding: 0.12em 0.35em;
  color: var(--ink);
}
.prose pre {
  font-family: var(--mono);
  font-size: 14.5px;
  line-height: 1.6;
  background: var(--ink);
  color: #e2e8f0;
  padding: 20px 22px;
  border-radius: var(--radius);
  margin: 1.8em 0;
  overflow-x: auto;
}
.prose pre code { background: none; border: 0; padding: 0; color: inherit; font-size: inherit; white-space: pre; }
.prose .highlight { background: transparent; }
.prose .highlighttable { display: table; }

.article-tags { font-size: 15px; margin-top: 40px; }

.author-card {
  display: flex;
  gap: 18px;
  align-items: center;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 22px 0;
  margin-top: 40px;
}
.author-card img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; object-position: center 20%; flex: none; }
.author-card p { margin: 0; font-size: 15px; }
.author-card a { color: var(--ink); text-decoration: none; }

.more-writing { max-width: 720px; margin: 64px auto 0; }

/* Code colours (dark theme, adapted from the previous article styles) */
/* Target .highlight div that wraps pre elements */
.prose .highlight { background: transparent; }
.prose .highlight pre { 
  background: var(--ink);
  color: #e2e8f0;
}
.prose .highlight .hll { background-color: #334155; }
.prose .highlight .c { color: #94a3b8; font-style: italic; } /* Comments */
.prose .highlight .err { color: #fb7185; background-color: transparent; }
.prose .highlight .k,
.prose .highlight .kc,
.prose .highlight .kd,
.prose .highlight .kn,
.prose .highlight .kp,
.prose .highlight .kr,
.prose .highlight .ow { color: #c084fc; font-weight: 600; } /* Keywords - bright purple */
.prose .highlight .o { color: #cbd5e1; } /* Operators */
.prose .highlight .ch,
.prose .highlight .cm,
.prose .highlight .c1,
.prose .highlight .cs { color: #94a3b8; font-style: italic; } /* Comments */
.prose .highlight .cp { color: #a5b4fc; font-weight: 600; } /* Preprocessor */
.prose .highlight .gd { color: #fca5a5; background-color: transparent; }
.prose .highlight .ge { font-style: italic; }
.prose .highlight .gr { color: #f87171; }
.prose .highlight .gh { color: #94a3b8; }
.prose .highlight .gi { color: #86efac; background-color: transparent; }
.prose .highlight .go { color: #94a3b8; }
.prose .highlight .gp { color: #cbd5e1; }
.prose .highlight .gs { font-weight: 700; }
.prose .highlight .gu { color: #94a3b8; }
.prose .highlight .gt { color: #f87171; }
.prose .highlight .kt { color: #60a5fa; font-weight: 600; } /* Type - bright blue */
.prose .highlight .m,
.prose .highlight .mb,
.prose .highlight .mf,
.prose .highlight .mh,
.prose .highlight .mi,
.prose .highlight .mo,
.prose .highlight .il { color: #fbbf24; } /* Numbers - amber */
.prose .highlight .s,
.prose .highlight .s1,
.prose .highlight .s2,
.prose .highlight .sb,
.prose .highlight .sc,
.prose .highlight .sd,
.prose .highlight .se,
.prose .highlight .sh,
.prose .highlight .si,
.prose .highlight .sx,
.prose .highlight .dl,
.prose .highlight .sa { color: #a7f3d0; } /* Strings - green */
.prose .highlight .sr { color: #86efac; } /* Regex */
.prose .highlight .ss { color: #fcd34d; } /* Symbols */
.prose .highlight .na { color: #7dd3fc; } /* Attributes - sky blue */
.prose .highlight .nb { color: #60a5fa; } /* Built-ins - blue */
.prose .highlight .nc { color: #fbbf24; font-weight: 600; } /* Class names - amber */
.prose .highlight .no { color: #f472b6; } /* Constants - pink */
.prose .highlight .nd { color: #a78bfa; font-weight: 600; } /* Decorators */
.prose .highlight .ni { color: #c084fc; } /* Entities */
.prose .highlight .ne,
.prose .highlight .nf,
.prose .highlight .fm { color: #fbbf24; font-weight: 600; } /* Functions - amber */
.prose .highlight .nl { color: #f472b6; font-weight: 600; } /* Labels */
.prose .highlight .nn { color: #cbd5e1; } /* Namespaces */
.prose .highlight .nt { color: #60a5fa; } /* Tags - blue */
.prose .highlight .nv,
.prose .highlight .vc,
.prose .highlight .vg,
.prose .highlight .vi,
.prose .highlight .vm { color: #7dd3fc; } /* Variables - sky blue */
.prose .highlight .w { color: #64748b; }
.prose .highlight .bp { color: #60a5fa; } /* Built-in pseudo */
.prose .highlight .cpf { color: #94a3b8; font-style: italic; }
.prose .highlight .p { color: #cbd5e1; } /* Punctuation */

/* ---------- Project detail ---------- */

.project-head { margin-bottom: 36px; }
.project-head .label a { color: var(--muted); text-decoration: none; }
.project-head .label a:hover { color: var(--ink); }
.project-head .project-tech { font-size: 15px; margin-bottom: 20px; }
.project-links { margin: 0; }
.project-images { display: grid; gap: 20px; margin-bottom: 40px; }
.project-images img { display: block; width: 100%; border: 1px solid var(--rule); border-radius: var(--radius); }
.project-video { position: relative; aspect-ratio: 16 / 9; margin-top: 32px; }
.project-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; border-radius: var(--radius); }

/* ---------- Resume ---------- */

.resume { max-width: 960px; }
.resume-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.resume-head h1 { margin-bottom: 8px; }
.resume-title { font-size: 18px; margin: 0; color: var(--ink); font-weight: 500; }
.resume-links { list-style: none; margin: 0; padding: 0; font-size: 15px; text-align: right; }
.resume-links li { margin-bottom: 4px; }

.resume-section { margin-bottom: 48px; }
.resume-section > p { margin-top: 14px; }
.resume-summary { font-size: 18px; max-width: 760px; }

.resume-row {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 28px;
}
.ruled-list > li.resume-row { padding: 18px 0; }
.resume-years { color: var(--accent); font-weight: 600; font-size: 15px; }
.resume-row h3 { font-size: 17px; margin: 0 0 2px; letter-spacing: -0.01em; }
.resume-org { margin: 0 0 8px; font-size: 15px; color: var(--muted); }
.resume-org a { color: var(--muted); }
.resume-row p.muted { margin: 0; font-size: 15px; }
.resume-desc { font-size: 15.5px; line-height: 1.6; }
.resume-desc p { margin-bottom: 8px; }
.resume-desc ul { margin: 0 0 8px; padding-left: 1.2em; }
.resume-desc li { margin-bottom: 4px; }
.resume-tech { font-size: 14px; margin: 8px 0 0; }

.resume-skills { display: grid; grid-template-columns: 260px minmax(0, 1fr); margin: 0; }
.resume-skills dt, .resume-skills dd { border-bottom: 1px solid var(--rule); padding: 14px 0; margin: 0; }
.resume-skills dt { font-weight: 600; color: var(--ink); font-size: 15px; }
.resume-skills dd { color: var(--body); font-size: 15px; }
.resume-inline { font-size: 15.5px; }
.resume-inline strong { color: var(--ink); font-weight: 600; }

@media (max-width: 720px) {
  .resume-row, .resume-skills { grid-template-columns: 1fr; gap: 4px; }
  .resume-skills dt { border-bottom: 0; padding-bottom: 0; }
  .resume-links { text-align: left; }
}

/* ---------- Print ---------- */

@media print {
  .site-header, .site-footer, .pagination, .filters, .author-card, .more-writing { display: none !important; }
  body { font-size: 11pt; color: #000; }
  .page { padding: 0; }
  .container { padding: 0; max-width: none; }
  .tint-band { background: none; padding: 0; }
  a { color: inherit; text-decoration: none; }
  .resume-section, .resume-row { break-inside: avoid; }
  .prose pre, .prose pre code { white-space: pre-wrap; }
}

/* ---------- Contact ---------- */

.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: 72px; align-items: start; }
.contact-text p { font-size: 18px; }
.contact-form .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form .field { margin-bottom: 18px; }
.contact-form label { display: block; font-size: 14px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.contact-form input, .contact-form textarea {
  width: 100%;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px;
}
.contact-form textarea { resize: vertical; min-height: 180px; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(11, 85, 99, 0.18); }

@media (max-width: 860px) {
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .contact-form .field-row { grid-template-columns: 1fr; gap: 0; }
}

/* ---------- Skip link ---------- */

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 20;
  background: var(--ink);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 14px;
  border-radius: var(--radius);
  text-decoration: none;
}
.skip:focus { top: 12px; color: #fff; }
main:focus { outline: none; }