/* ---------- Base ---------- */
:root {
  --bg: #F1EDE2;
  --red: #C93A2B;
  --green: #35583B;
  --ink: #4A4A72;
  --ink-soft: #6B6B8F;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

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

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

/* ---------- Header ---------- */
header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 56px 64px 24px;
}

.logo { line-height: 0.9; }

.logo .first {
  font-family: "Prata", serif;
  color: var(--red);
  font-size: clamp(26px, 2.6vw, 38px);
  letter-spacing: 0.08em;
  display: block;
}

.logo .last {
  font-family: "Prata", serif;
  color: var(--red);
  font-size: clamp(12px, 1.2vw, 17px);
  letter-spacing: 0.26em;
  display: block;
  margin-left: 5.2em;
  margin-top: 0.4em;
  text-transform: uppercase;
}

nav {
  display: flex;
  align-items: center;
  gap: 44px;
  margin-top: 18px;
  flex-wrap: wrap;
}

nav a {
  color: var(--green);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

nav a.active, nav a:hover { border-color: var(--green); }

nav .insta svg { display: block; }

/* Burger : cache sur desktop */
.burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  z-index: 60;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--green);
  margin: 5px 0;
  transition: transform 0.25s, opacity 0.25s;
}

body.nav-open .burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
body.nav-open .burger span:nth-child(2) { opacity: 0; }
body.nav-open .burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Accueil : intro (sous le carrousel) ---------- */
.intro { padding: 0 64px 110px; }

.tagline {
  font-weight: 400;
  color: var(--ink);
  font-size: clamp(24px, 3.2vw, 42px);
  line-height: 1.3;
  max-width: 21em;
}

.traces {
  text-align: center;
  margin-top: 34px;
  color: var(--green);
  font-size: clamp(17px, 1.8vw, 22px);
  letter-spacing: 0.02em;
}

.cursor {
  display: inline-block;
  width: 0.5em;
  height: 1em;
  background: var(--red);
  vertical-align: baseline;
  transform: translateY(0.12em);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- Accueil : carrousel ---------- */
.carousel {
  position: relative;
  max-width: 1100px;
  margin: 40px auto 60px;
  padding: 0 90px;
}

.carousel-frame {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 62vh;
}

.carousel-frame img {
  max-height: 68vh;
  max-width: 100%;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.carousel-frame img.visible { opacity: 1; }

.carousel button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--ink);
  font-size: 28px;
  font-weight: 300;
  cursor: pointer;
  opacity: 0.55;
  transition: opacity 0.2s;
  padding: 20px;
}

.carousel button:hover { opacity: 1; }
.carousel .prev { left: 10px; }
.carousel .next { right: 10px; }

/* ---------- Series : 2 projets par ligne ---------- */
.series {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 90px 48px;
  padding: 60px 64px 140px;
  max-width: 1400px;
  margin: 0 auto;
}

.serie {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s ease, transform 0.9s ease;
}

.serie.reveal { opacity: 1; transform: none; }

.serie img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.serie h2 {
  font-family: "Inter", sans-serif;
  font-weight: 500;
  color: var(--green);
  font-size: 15px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 18px;
}

.serie h2 span {
  color: var(--ink-soft);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0.02em;
  margin-left: 14px;
  font-size: 14px;
}

/* ---------- Serie : slideshow ---------- */
.slideshow {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 40px 60px;
}

.slide-stage {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 66vh;
}

.slide-stage img {
  max-height: 66vh;
  max-width: 100%;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.45s ease;
}

.slide-stage img.visible { opacity: 1; }

.title-card {
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 18px;
}

.title-card h1 {
  font-family: "Prata", serif;
  font-weight: 400;
  color: var(--red);
  font-size: clamp(30px, 4vw, 46px);
  letter-spacing: 0.02em;
}

.title-card p {
  color: var(--green);
  font-size: 14px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.slide-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 28px;
  margin-top: 26px;
}

.slide-nav button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: 13.5px;
  letter-spacing: 0.06em;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 2px;
  border-bottom: 1px solid transparent;
}

.slide-nav button:hover { border-color: var(--green); }

.slide-nav span { font-size: 13.5px; color: var(--ink-soft); letter-spacing: 0.06em; }

.thumbs-grid {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 22px;
  align-items: center;
  min-height: 60vh;
  padding: 20px 0;
}

.thumbs-grid img { width: 100%; cursor: pointer; transition: opacity 0.2s; }
.thumbs-grid img:hover { opacity: 0.75; }

/* ---------- About ---------- */
.about {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  padding: 80px 64px 140px;
  max-width: 1400px;
  margin: 0 auto;
}

.about .portrait { align-self: start; }

.about.no-portrait {
  grid-template-columns: 1fr;
  max-width: 760px;
}

.about.no-portrait .bio { padding-top: 10px; }

.about .bio {
  font-size: 16.5px;
  line-height: 1.65;
  padding-top: 40px;
  max-width: 620px;
}

.about .bio p { margin-bottom: 1.4em; }

.about .bio strong { color: var(--ink); }

.about .bio a {
  color: var(--green);
  border-bottom: 1px solid var(--green);
}

/* ---------- Contact ---------- */
.contact {
  padding: 100px 64px 160px;
  max-width: 720px;
}

.contact h1 {
  font-family: "Prata", serif;
  color: var(--red);
  font-weight: 400;
  font-size: 34px;
  margin-bottom: 40px;
}

.contact p { font-size: 17px; line-height: 1.7; margin-bottom: 1.2em; }

.contact a { color: var(--green); border-bottom: 1px solid var(--green); }

/* ---------- Page 404 ---------- */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 22px;
  text-align: center;
  padding: 24px;
}

.error-page h1 {
  font-family: "Prata", serif;
  font-weight: 400;
  color: var(--red);
  font-size: clamp(28px, 5vw, 44px);
}

.error-page a {
  color: var(--green);
  border-bottom: 1px solid var(--green);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-bottom: 3px;
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  header {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    padding: 20px 20px 8px;
  }

  .logo .first { font-size: 24px; }
  .logo .last { font-size: 11px; margin-left: 3.4em; }

  .burger { display: block; }

  /* Menu plein ecran */
  nav {
    position: fixed;
    inset: 0;
    margin: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 40px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 50;
  }

  body.nav-open nav { transform: none; }
  body.nav-open { overflow: hidden; }

  nav a { font-size: 19px; letter-spacing: 0.16em; }
  nav .insta svg { width: 24px; height: 24px; }

  /* Accueil */
  .carousel { padding: 0 12px; margin: 14px auto 36px; }
  .carousel button { display: none; }
  .carousel-frame { min-height: 48vh; }
  .carousel-frame img { max-height: 60vh; }
  .intro { padding: 0 22px 70px; }
  .traces { margin-top: 24px; }

  /* Diaporama projet */
  .slideshow { padding: 8px 14px 40px; }
  .slide-stage { min-height: 54vh; }
  .slide-stage img { max-height: 58vh; }
  .slide-nav { gap: 18px; margin-top: 18px; }
  .thumbs-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }

  /* Pages */
  .series, .about, .contact { padding-left: 22px; padding-right: 22px; }
  .series { grid-template-columns: 1fr; gap: 52px; padding-top: 24px; }
  .about { grid-template-columns: 1fr; gap: 36px; padding-top: 40px; }
  .about .bio { padding-top: 0; font-size: 16px; }
  .contact { padding-top: 60px; }
}

/* ---------- Footer ---------- */
.site-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 26px 64px 30px;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.site-footer a { color: var(--ink-soft); border-bottom: 1px solid #C9C2AE; }
.site-footer a:hover { color: var(--green); border-color: var(--green); }

/* ---------- Mentions legales ---------- */
.legal h2 {
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green);
  margin: 34px 0 10px;
  font-weight: 500;
}

.legal p { font-size: 15.5px; }

@media (max-width: 820px) {
  .site-footer { padding: 20px 22px 26px; }
}