/* ==========================================================================
   augustinmelon.fr — direction « grille suisse »
   ========================================================================== */

@font-face {
  font-family: "Inter Tight";
  src: url("fonts/inter-tight.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("fonts/geist-mono.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

/* Thème clair par défaut ; sombre via <html data-theme="dark"> (bouton de la nav) */
:root {
  color-scheme: light;
  --bg: #fafaf8;
  --fg: #0f0f10;
  --muted: #55555c;
  --accent: #2442ff;
  --on-accent: #fff;
  --line: rgb(15 15 16 / .1);
  --line-strong: rgb(15 15 16 / .22);
  --card: #fff;

  --display: "Inter Tight", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Consolas, monospace;

  --gutter: clamp(16px, 5vw, 64px);
  --max: 1200px;
  --cols: 4;
  --row: 96px;
  --nav-h: 64px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0e0b;
  --fg: #ecebe3;
  --muted: #a3a29a;
  --accent: #7d8cff;
  --on-accent: #0d0e0b;
  --line: rgb(236 235 227 / .08);
  --line-strong: rgb(236 235 227 / .2);
  --card: #14150f;
}

@media (min-width: 760px) {
  :root { --cols: 12; }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg);
  /* Grille de fond : colonnes + lignes de base */
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 100% var(--row), calc(100% / var(--cols)) 100%;
  color: var(--fg);
  font: 400 17px/1.6 var(--display);
  font-feature-settings: "ss01", "cv11";
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: var(--on-accent); }

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

h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; text-wrap: pretty; }
ul, ol { list-style: none; margin: 0; padding: 0; }
a { color: inherit; }
[hidden] { display: none !important; }

.wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.num {
  font: 500 .72em/1 var(--mono);
  color: var(--accent);
  letter-spacing: .02em;
}

.skip {
  position: absolute; left: 8px; top: -100px; z-index: 100;
  padding: 10px 14px; background: var(--accent); color: var(--on-accent);
  font: 500 14px/1 var(--mono); text-decoration: none;
}
.skip:focus { top: 8px; }

.show-sm { display: none; }
@media (max-width: 520px) {
  .hide-sm { display: none; }
  .show-sm { display: inline; }
}

/* Lien : soulignement qui se trace au survol */
.link {
  text-decoration: none;
  background: linear-gradient(var(--accent), var(--accent)) left bottom / 0 2px no-repeat;
  padding-bottom: 2px;
  transition: background-size .35s var(--ease), color .2s;
}
.link:hover, .link:focus-visible { background-size: 100% 2px; }

/* ---------- Boutons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 20px;
  font: 500 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .05em;
  text-decoration: none;
  white-space: nowrap;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line-strong);
  cursor: pointer;
  transition: background-color .25s, border-color .25s, color .25s;
}
.btn:hover, .btn:focus-visible { border-color: var(--accent); color: var(--accent); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn--primary:hover, .btn--primary:focus-visible { background: var(--fg); border-color: var(--fg); color: var(--bg); }
.btn--sm { padding: 11px 14px; font-size: 12px; }
.btn__arrow { display: inline-block; transition: transform .3s var(--ease); }
.btn:hover .btn__arrow { transform: translateX(3px); }
.btn.is-done { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

/* ---------- Navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav__inner {
  display: flex; align-items: center; gap: clamp(12px, 3vw, 32px);
  min-height: var(--nav-h);
  font: 400 13px/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: .04em;
}
.nav__brand { text-decoration: none; font-weight: 500; white-space: nowrap; margin-right: auto; }
.nav ul { display: flex; gap: clamp(12px, 3vw, 32px); }
.nav ul a {
  position: relative; display: inline-block; padding: 6px 0;
  text-decoration: none; color: var(--muted);
  transition: color .2s;
}
.nav ul a:hover, .nav ul a[aria-current="true"] { color: var(--fg); }
.nav ul a::after {
  content: ""; position: absolute; left: 0; bottom: -1px; height: 2px; width: 100%;
  background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav ul a[aria-current="true"]::after { transform: scaleX(1); }
.nav__actions { display: flex; align-items: center; gap: clamp(8px, 2vw, 20px); }

.lang {
  padding: 8px 4px;
  text-decoration: none;
  color: var(--muted);
  transition: color .2s;
}
.lang:hover { color: var(--fg); }

.theme {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 4px;
  font: inherit; text-transform: inherit; letter-spacing: inherit;
  color: var(--muted);
  background: none; border: 0; cursor: pointer;
  transition: color .2s;
}
.theme:hover { color: var(--fg); }
.theme__icon { font-size: 15px; transition: transform .5s var(--ease); }
.theme:hover .theme__icon { transform: rotate(180deg); }

@media (max-width: 520px) {
  .nav__brand { display: none; }
  .nav ul { margin-right: auto; }
  .nav ul .num, .theme__label { display: none; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h));
  display: flex; align-items: center;
  padding-block: 64px 96px;
}

.hero__title {
  font-weight: 800;
  font-size: clamp(52px, 13.5vw, 172px);
  line-height: .9;
  letter-spacing: -.05em;
  text-transform: uppercase;
  margin-left: -.04em;
}
.hero__title span {
  display: block;
  margin-top: .1em; /* laisse respirer l'accent du É */
  color: transparent;
  -webkit-text-stroke: clamp(1px, .18vw, 2px) var(--fg);
}
/* Carré d'accent en guise de point final : clignote deux fois puis reste */
.sq {
  display: inline-block;
  width: .16em; height: .16em;
  margin-left: .08em;
  background: var(--accent);
  animation: blink 1.6s steps(1) .6s 1 both;
}
@keyframes blink {
  0%, 50% { opacity: 1; }
  25%, 75% { opacity: 0; }
}

.hero__lead {
  max-width: 30ch;
  margin-top: clamp(28px, 4vw, 48px);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: -.015em;
}
.hero__about {
  max-width: 58ch;
  margin-top: 16px;
  color: var(--muted);
}
.hero__ctas {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px;
  margin-top: 40px;
}
.hero__cv { margin-left: 8px; font: 500 14px/1 var(--mono); }
.hero__corner {
  position: absolute; right: var(--gutter); bottom: 28px;
  font: 400 12px/1 var(--mono); color: var(--muted);
}

/* ---------- Sections ---------- */
.section { padding-block: clamp(72px, 10vw, 128px); }
.section__title {
  display: flex; align-items: baseline; gap: 14px;
  padding-bottom: 20px;
  margin-bottom: clamp(32px, 5vw, 56px);
  border-bottom: 1px solid var(--line-strong);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1;
  text-transform: uppercase;
}
.section__title .num { font-size: 14px; transform: translateY(-.2em); }
.section__more { margin-top: 32px; font: 500 15px/1 var(--mono); }

/* ---------- Cartes projets ---------- */
.cards {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
}
.card {
  position: relative;
  display: flex; flex-direction: column; gap: 12px;
  height: 100%;
  padding: 28px 24px 24px;
  background: var(--card);
  border: 1px solid var(--line-strong);
  transition: border-color .3s;
}
/* Toute la carte est cliquable via le lien du titre */
.card__link { text-decoration: none; }
.card__link::after { content: ""; position: absolute; inset: 0; }
.card__link:focus-visible { outline: none; }
.card:has(.card__link:focus-visible) { outline: 2px solid var(--accent); outline-offset: 3px; }
/* Barre d'accent qui se trace en haut de la carte */
.card::before {
  content: ""; position: absolute; left: -1px; top: -1px; height: 3px; width: 0;
  background: var(--accent);
  transition: width .45s var(--ease);
}
.card:hover, .card:focus-within { border-color: var(--fg); }
.card:hover::before, .card:focus-within::before { width: calc(100% + 2px); }
.card__num { font: 400 12px/1 var(--mono); color: var(--muted); }
.card__title {
  display: flex; justify-content: space-between; align-items: baseline; gap: 12px;
  font-size: 26px; font-weight: 600; letter-spacing: -.025em; line-height: 1.15;
}
.card p { color: var(--muted); flex: 1; }
.arrow { display: inline-block; color: var(--accent); transition: transform .3s var(--ease); }
.card:hover .arrow, .card:focus-within .arrow { transform: translate(3px, -3px); }
.card__demo {
  position: relative; z-index: 1; /* au-dessus du lien de la carte */
  align-self: flex-start;
  margin-top: 4px;
  font: 500 13px/1 var(--mono);
  color: var(--accent);
}

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; }
.tags li {
  font: 400 12px/1 var(--mono);
  padding: 6px 8px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
}

/* ---------- Parcours ---------- */
.timeline { border-left: 1px solid var(--line-strong); }
.timeline__item {
  position: relative;
  display: grid; gap: 6px 32px;
  padding: 0 0 40px 28px;
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: ""; position: absolute; left: -5px; top: .45em;
  width: 9px; height: 9px;
  background: var(--bg);
  border: 2px solid var(--accent);
  transition: background .3s;
}
.timeline__item:hover::before { background: var(--accent); }
.timeline__date { font: 400 13px/1.8 var(--mono); color: var(--accent); }
.timeline__item h3 { font-size: 22px; font-weight: 600; letter-spacing: -.02em; line-height: 1.25; }
.timeline__place { font: 400 13px/1.6 var(--mono); color: var(--muted); margin: 2px 0 8px; text-transform: uppercase; }
.timeline__item p:last-child { max-width: 62ch; color: var(--muted); }

@media (min-width: 760px) {
  .timeline { border-left: 0; }
  .timeline__item {
    grid-template-columns: calc((100% / 12) * 3 - 32px) 1fr;
    padding: 28px 0;
    border-top: 1px solid var(--line);
  }
  .timeline__item::before { left: calc((100% / 12) * 3 - 22px); top: 36px; }
}

/* ---------- Contact ---------- */
.contact__lead { max-width: 40ch; font-size: clamp(20px, 2.4vw, 26px); line-height: 1.35; letter-spacing: -.01em; }
.contact__address {
  margin-top: 24px;
  font-weight: 700;
  font-size: clamp(24px, 5.6vw, 64px);
  letter-spacing: -.04em;
  line-height: 1.1;
  overflow-wrap: anywhere;
}
.contact__actions, .contact__links {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-top: 32px;
}
.contact__links { margin-top: 12px; }

/* ---------- Pied de page ---------- */
.footer { border-top: 1px solid var(--line-strong); }
.footer__inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
  padding-block: 24px;
  font: 400 13px/1 var(--mono);
  color: var(--muted);
}

/* ---------- 404 ---------- */
.notfound { min-height: 100svh; }
.notfound .hero__title { font-size: clamp(96px, 30vw, 320px); }

/* ---------- Apparition au défilement (CSS seul) ---------- */
@supports (animation-timeline: view()) {
  .reveal {
    animation: reveal linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 55%;
  }
  @keyframes reveal {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: none; }
  }
}

/* ---------- Mouvement réduit ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}