/* =========================================================
   Portfolio : feuille de style
   Palette sobre : ivoire (clair) / vrai noir (sombre), accent blanc pur.
   Typo : Space Grotesk (titres) + JetBrains Mono (micro-typo) + Inter (texte).
   ========================================================= */

/* ---------- Thème clair (par défaut) ---------- */
:root {
  --bg:          #fbfaf7;
  --bg-soft:     #f3f1ec;
  --surface:     #ffffff;
  --ink:         #16150f;
  --ink-soft:    #4f4d45;
  --ink-faint:   #8d8a80;
  --line:        #e2ded4;
  --accent:      #2f2d28;   /* thème clair : le blanc serait illisible sur l'ivoire */
  --accent-soft: #ecebe5;
  --shadow:      0 1px 2px rgba(22, 21, 15, .04), 0 12px 32px -18px rgba(22, 21, 15, .28);

  /* Titres : grotesque géométrique. Micro-typo : monospace. Texte courant : Inter. */
  --display: "Space Grotesk", "Inter", ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
  --sans:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --wrap: 1140px;
  --r: 10px;
  --ease: cubic-bezier(.2, .7, .3, 1);
}

/* ---------- Thème sombre ---------- */
[data-theme="dark"] {
  --bg:          #000000;   /* vrai noir */
  --bg-soft:     #0a0a0a;
  --surface:     #060606;
  --ink:         #f5f4f1;
  --ink-soft:    #adaca8;
  --ink-faint:   #6e6d6a;
  --line:        #1f1f1f;
  --accent:      #ffffff;   /* blanc pétant */
  --accent-soft: #151515;
  --shadow:      0 1px 2px rgba(0, 0, 0, .4), 0 16px 40px -20px rgba(0, 0, 0, .8);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s var(--ease), color .3s var(--ease);
}

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

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -.025em;
  line-height: 1.12;
  margin: 0;
}

/* Mise en avant : même police que le titre, seule la couleur change. */
em { font-style: normal; color: var(--accent); }

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

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

.wrap {
  width: min(100% - 2.5rem, var(--wrap));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--bg);
  padding: .7rem 1.1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- En-tête ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.site-header.is-stuck { border-bottom-color: var(--line); }

.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 74px;
}

.wordmark {
  font-family: var(--display);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: -.03em;
  margin-right: auto;
}
.wordmark .dot { color: var(--accent); }

.nav {
  display: flex;
  gap: 1.6rem;
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--ink-soft);
}
.nav a { position: relative; padding-block: .25rem; transition: color .2s var(--ease); }
.nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-faint); transform: rotate(-15deg); }
.theme-toggle svg {
  width: 17px; height: 17px;
  grid-area: 1 / 1;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
}
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

/* ---------- Hero ---------- */
.hero {
  padding-top: clamp(5rem, 13vw, 10rem);
  padding-bottom: clamp(4rem, 10vw, 8rem);
  max-width: 900px;
}

.eyebrow {
  margin: 0 0 1.6rem;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 400;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.hero h1 {
  font-size: clamp(2.4rem, 6.6vw, 4.6rem);
  font-weight: 300;
  margin-bottom: 1.8rem;
}

.lead {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.14rem);
  color: var(--ink-soft);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 2.6rem;
}

.btn {
  display: inline-block;
  padding: .78rem 1.6rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: .84rem;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost { border-color: var(--line); color: var(--ink-soft); }
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }

/* ---------- Sections ---------- */
.section { padding-block: clamp(3.5rem, 8vw, 6rem); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  margin-bottom: 3rem;
  border-bottom: 1px solid var(--line);
}

.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  display: flex;
  align-items: baseline;
  gap: .9rem;
}

.num {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--accent);
  transform: translateY(-.35em);
}

/* ---------- Filtres ---------- */
.filters { display: flex; flex-wrap: wrap; gap: .4rem; }

.filter {
  padding: .42rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: .78rem;
  cursor: pointer;
  transition: all .22s var(--ease);
}
.filter:hover { color: var(--ink); border-color: var(--ink-faint); }
.filter.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}

/* ---------- Grille de projets ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease),
              border-color .35s var(--ease), opacity .3s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}
.card[hidden] { display: none; }

.card-media {
  display: block;
  aspect-ratio: 16 / 10;
  background:
    linear-gradient(135deg, var(--bg-soft), var(--accent-soft));
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.card:hover .card-media img { transform: scale(1.035); }

.card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.5rem 1.6rem 1.4rem;
}

.card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .6rem;
}

.card h3 { font-size: 1.28rem; }
.card h3 a { transition: color .2s var(--ease); }
.card h3 a:hover { color: var(--accent); }

.year {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--ink-faint);
  flex-shrink: 0;
}

.card-body > p {
  margin: 0 0 1.3rem;
  font-size: .93rem;
  color: var(--ink-soft);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  margin-top: auto;
}
.tags li {
  padding: .2rem .6rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg-soft);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .01em;
  color: var(--ink-faint);
}

.card-links {
  display: flex;
  gap: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .8rem;
}
.card-links a { color: var(--ink-soft); transition: color .2s var(--ease); }
.card-links a:hover { color: var(--accent); }
.card-links span { display: inline-block; transition: transform .2s var(--ease); }
.card-links a:hover span { transform: translate(2px, -2px); }

.empty {
  padding: 3rem 0;
  text-align: center;
  color: var(--ink-faint);
}

/* ---------- À propos ---------- */
.about {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.about-text p { margin: 0 0 1.2rem; color: var(--ink-soft); }
.about-text .big {
  font-family: var(--display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  line-height: 1.4;
  color: var(--ink);
}

.stack { margin: 0; }
.stack > div {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: .9rem 0;
  border-top: 1px solid var(--line);
}
.stack > div:last-child { border-bottom: 1px solid var(--line); }
.stack dt {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-top: .15rem;
}
.stack dd { margin: 0; font-size: .92rem; }

/* ---------- Contact ---------- */
.contact {
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.5rem, 5vw, 4rem);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-align: center;
}

.contact-title {
  font-size: clamp(1.9rem, 4.6vw, 3.1rem);
  font-weight: 300;
  margin-bottom: 2rem;
}

.mail {
  display: inline-block;
  font-family: var(--mono);
  font-weight: 300;
  font-size: clamp(.95rem, 2.1vw, 1.25rem);
  padding-bottom: .25rem;
  border-bottom: 1px solid var(--ink-faint);
  transition: color .25s var(--ease), border-color .25s var(--ease);
  overflow-wrap: anywhere;
}
.mail:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- Pied de page ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  padding-block: 2rem;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--ink-faint);
}
.footer-inner a:hover { color: var(--ink); }

/* ---------- Apparition au défilement ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .about { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .nav { display: none; }
  .grid { grid-template-columns: 1fr; }
  .section-head { flex-direction: column; align-items: flex-start; }
  .filters { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}