/* Bastien Grandjean — portfolio. Une seule feuille, pas de framework. */

@font-face {
  font-family: 'Newsreader';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('../fonts/newsreader-400-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Newsreader';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/newsreader-italic-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Geist';
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
  src: url('../fonts/geist-400-600.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Geist Mono';
  font-style: normal;
  font-weight: 400 500;
  font-display: swap;
  src: url('../fonts/geist-mono-400-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: light;

  --paper: #F4F0E8;
  --ink: #1A1916;
  --ink-secondary: #3B3631;
  --ink-muted: #5C564D;
  --ink-muted-strong: #6E675D;
  --line: #D6CDBF;
  --surface: #E9E2D6;
  --surface-strong: #EFE9DE;
  --accent: #1F4FA3;

  --contact-secondary: #D9D1C4;
  --contact-muted: #B8AFA2;
  --contact-line: #47423B;

  --radius: 4px;
  --radius-sm: 2px;

  --container: 1312px;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --section-gap: clamp(4rem, 8vw, 7rem);

  --font-display: 'Newsreader', Georgia, serif;
  --font-text: 'Geist', ui-sans-serif, system-ui, sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a { color: var(--ink); }
a:hover { text-decoration-thickness: 2px; }

::selection { background: var(--ink); color: var(--paper); }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}
#contact a:focus-visible { outline-color: var(--paper); }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

/* Skip link */
.skip {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 12px 16px;
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}
.skip:focus {
  top: 12px;
  color: var(--paper);
}

/* Buttons */
.btn {
  transition: opacity .15s ease, transform .15s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  white-space: nowrap;
}
.btn:hover { opacity: .86; }
.btn:active { transform: translateY(1px); }
@media (prefers-reduced-motion: reduce) {
  .btn { transition: none; }
}
.btn-primary {
  background: var(--accent);
  color: var(--paper);
  border: none;
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--ink);
  color: var(--ink);
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  padding-block: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 32px;
}
.site-header__name {
  font-family: var(--font-display);
  font-size: 26px;
  line-height: 1;
  text-decoration: none;
  padding-block: 12px;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 28px;
}
.site-nav a {
  font-size: 15px;
  text-decoration: none;
  padding-block: 12px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.lang-switch {
  display: flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.lang-switch a {
  min-width: 44px;
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
}
.lang-switch a[aria-current="true"] {
  background: var(--ink);
  color: var(--paper);
}

main { display: block; }

section { padding-block: var(--section-gap); }
section.hero { padding-block: clamp(3.5rem, 6vw, 6rem) var(--section-gap); }
section + section { border-top: 1px solid var(--line); }

/* Hero */
.hero__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 48px 72px;
}
.hero__text {
  flex: 999 1 540px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
h1 {
  margin: 0;
  padding-bottom: 0.08em;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 5.6vw, 5.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero__lede {
  margin: 0;
  max-width: 34rem;
  font-size: clamp(1.125rem, 1.5vw, 1.3125rem);
  line-height: 1.55;
  color: var(--ink-secondary);
  text-wrap: pretty;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.hero__photo {
  flex: 1 1 280px;
  max-width: 380px;
}
.hero__photo img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  filter: grayscale(1) contrast(1.05);
}

/* Section headings */
h2.section-h {
  margin: 0 0 56px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}

/* Projects */
.project {
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.project + .project {
  margin-top: var(--section-gap);
  padding-top: clamp(4rem, 7vw, 6rem);
  border-top: 1px solid var(--line);
}
.project__header {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr));
  gap: 20px 64px;
  align-items: end;
}
.project__title-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.project__year {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}
.project__title {
  margin: 0;
  padding-bottom: 0.06em;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.75rem, 5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
}
.project__tagline {
  margin: 0;
  max-width: 32rem;
  font-size: clamp(1.125rem, 1.5vw, 1.3125rem);
  line-height: 1.5;
  color: var(--ink-secondary);
  text-wrap: pretty;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.gallery--grid {
  grid-template-columns: repeat(auto-fit, minmax(min(420px, 100%), 1fr));
  gap: 32px 16px;
}
.gallery figure {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.gallery img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
}
.gallery img.on-dark { background: var(--ink); }
.gallery figcaption {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}

.project__body {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(380px, 100%), 1fr));
  gap: 40px 64px;
  align-items: start;
}
.project__desc-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.project__desc {
  margin: 0;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-secondary);
  text-wrap: pretty;
}
.project__links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 28px;
}
.project__links a {
  padding-block: 10px;
  font-size: 16px;
  font-weight: 500;
  text-decoration-color: var(--accent);
  text-underline-offset: 4px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.demo-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 26rem;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-strong);
}
.demo-box__title {
  font-size: 15px;
  font-weight: 600;
}
.demo-box dl {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  margin: 0;
  font-size: 14px;
}
.demo-box dt { color: var(--ink-muted); }
.demo-box dd {
  margin: 0;
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.project__meta-col {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.project__meta-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.project__meta-block h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}
.highlights {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink-secondary);
}
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.stack li {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* Approach */
.approach__inner {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.approach__label {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.approach__phrase {
  margin: 0;
  max-width: 30ch;
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3.5rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  text-wrap: pretty;
}
.approach__phrase span { color: var(--ink-muted-strong); }

/* Path / background */
.path__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 40px 64px;
}
.path__inner h2.section-h {
  flex: 1 1 260px;
  margin: 0;
}
.path__content {
  flex: 999 1 560px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 64px;
}
.path__group {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.path__group h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}
.path__group--edu { gap: 24px; }
.path__group--skills { gap: 24px; }

.job {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
}
.job__dates {
  flex: 0 0 180px;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}
.job__content {
  flex: 1 1 320px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.job__title {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.2;
}
.job__org { font-size: 15px; color: var(--ink-muted); }
.job__desc {
  margin: 6px 0 0;
  max-width: 40rem;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-secondary);
  text-wrap: pretty;
}

.edu { display: flex; flex-wrap: wrap; gap: 8px 32px; }
.edu__dates {
  flex: 0 0 180px;
  padding-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}
.edu__content {
  flex: 1 1 320px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.edu__title {
  font-family: var(--font-display);
  font-size: 28px;
  line-height: 1.2;
}
.edu__org { font-size: 15px; color: var(--ink-muted); }

.skills-dl {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
  gap: 24px 40px;
  margin: 0;
}
.skills-dl > div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.skills-dl dt {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-muted);
}
.skills-dl dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
}

/* Contact */
#contact {
  padding-block: clamp(4rem, 9vw, 8rem) 40px;
  background: var(--ink);
  color: var(--paper);
}
#contact h2.section-h {
  margin: 0;
  max-width: 16ch;
  padding-bottom: 0.08em;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(3rem, 6.5vw, 6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
#contact h2.section-h em { font-style: italic; color: var(--paper); }
.contact__lede {
  margin: 32px 0 0;
  max-width: 34rem;
  font-size: clamp(1.0625rem, 1.5vw, 1.25rem);
  line-height: 1.6;
  color: var(--contact-secondary);
  text-wrap: pretty;
}
.contact__links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 0 40px;
  margin: 56px 0 0;
  padding: 0;
  list-style: none;
}
.contact__links li { border-top: 1px solid var(--contact-line); }
.contact__links a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-block: 20px;
  color: var(--paper);
  text-decoration: none;
  min-height: 44px;
}
.contact__links a .label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--contact-muted);
}
.contact__links a .value {
  font-size: 19px;
  overflow-wrap: anywhere;
}
.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 96px;
  padding-top: 24px;
  border-top: 1px solid var(--contact-line);
  font-size: 14px;
  color: var(--contact-muted);
}

/* 404 */
.not-found {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 24px;
}
.not-found h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }