:root {
  --navy: #084060;
  --navy-deep: #052838;
  --ink: #143044;
  --muted: #5c7382;
  --sky: #2e9fe8;
  --sky-deep: #1b7fbe;
  --line: #d7e4ee;
  --mist: #f3f7fb;
  --white: #ffffff;
  --shadow: 0 18px 50px rgba(8, 64, 96, 0.12);
  --radius: 22px;
  --header: 88px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Outfit", "Segoe UI", sans-serif;
  font-weight: 400;
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3 { font-family: "Fraunces", Georgia, serif; font-weight: 500; letter-spacing: -0.03em; line-height: 1.12; margin: 0; }
p { margin: 0; }

.sr-only, .skip {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
.skip:focus {
  position: fixed;
  top: 8px; left: 8px;
  width: auto; height: auto;
  clip: auto;
  background: var(--white);
  padding: 8px 12px;
  z-index: 20;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 6vw;
  background: var(--navy-deep);
  color: #d5e8f4;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}
.topbar p { margin: 0; }
.topbar sup { font-size: 0.65em; }

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header);
  padding: 10px 6vw;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.brand img { width: min(250px, 46vw); height: auto; }
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  text-decoration: none;
  font-size: 0.95rem;
  color: var(--navy);
}
.nav a:hover, .nav a[aria-current="true"] { color: var(--sky-deep); }
.nav-cta {
  background: var(--navy);
  color: var(--white) !important;
  padding: 10px 16px;
  border-radius: 999px;
}
.nav-cta:hover { background: var(--sky-deep); }
.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
  padding: 10px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--navy);
}

.hero {
  position: relative;
  padding: 0;
  background: var(--navy-deep);
}
.slider { position: relative; }
.slides { display: grid; }
.slide {
  position: relative;
  overflow: hidden;
  grid-area: 1 / 1;
  min-height: 640px;
  display: flex;
  align-items: center;
  background-size: 0 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 1s ease, visibility 0s linear 1s;
}
.slide.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  z-index: 1;
  transition: opacity 1s ease, visibility 0s linear 0s;
}
.slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: inherit;
  background-size: cover;
  background-position: 72% center;
  transform: scale(1.08);
  transition: transform 8s ease;
  z-index: 0;
}
.slide.is-active::after { transform: scale(1); }
.slide::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(90deg, rgba(5, 24, 36, 0.78) 0%, rgba(5, 24, 36, 0.42) 40%, rgba(5, 24, 36, 0.05) 70%);
}
.slide .hero-copy > *,
.slide .hero-card {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.slide.is-active .hero-copy > *,
.slide.is-active .hero-card {
  opacity: 1;
  transform: none;
}
.slide.is-active .hero-copy > *:nth-child(1) { transition-delay: 0.15s; }
.slide.is-active .hero-copy > *:nth-child(2) { transition-delay: 0.3s; }
.slide.is-active .hero-copy > *:nth-child(3) { transition-delay: 0.45s; }
.slide.is-active .hero-copy > *:nth-child(4) { transition-delay: 0.6s; }
.slide.is-active .hero-card { transition-delay: 0.35s; }
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.reveal.is-in { opacity: 1; transform: none; }
.slide-congres { background-image: url("assets/slide-congres.jpg"); }
.slide-atelier { background-image: url("assets/slide-atelier.jpg"); }
.slide-casa { background-image: url("assets/slide-casa.jpg"); }
.slide-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 48px;
  align-items: center;
  width: 100%;
  padding: 72px 6vw 88px;
}
.slide-atelier .slide-inner,
.slide-casa .slide-inner { grid-template-columns: 1fr; }
.eyebrow {
  margin: 0 0 14px;
  color: var(--sky-deep);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero h1, .hero h2 {
  font-size: clamp(2.6rem, 5vw, 4.6rem);
  max-width: 14ch;
  color: var(--white);
}
.theme {
  margin-top: 18px;
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  color: #d7eefb;
}
.lead {
  max-width: 58ch;
  margin-top: 16px;
  color: #d5e4ee;
  font-size: 1.08rem;
}
.hero .eyebrow { color: #7ec8f0; }
.hero .btn-ghost { color: var(--white); border-color: rgba(255, 255, 255, 0.75); }
.hero .btn-ghost:hover { background: var(--white); color: var(--navy); }
.slider-controls {
  position: absolute;
  z-index: 2;
  left: 6vw;
  bottom: 22px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.slider-arrow, .slider-dots button {
  border: 0;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.18);
  color: var(--white);
}
.slider-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
}
.slider-arrow:hover, .slider-dots button[aria-selected="true"] { background: var(--sky); }
.slider-dots { display: flex; gap: 8px; }
.slider-dots button { width: 10px; height: 10px; border-radius: 50%; padding: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 500;
}
.btn-primary { background: var(--sky); color: var(--white); }
.btn-primary:hover { background: var(--sky-deep); }
.btn-ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn-ghost:hover { background: var(--navy); color: var(--white); }

.hero-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
  padding: 28px 24px 22px;
  text-align: center;
}
.hero-mark { width: 168px; margin: 0 auto 8px; }
.countdown {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 8px 0 14px;
  padding: 0;
}
.countdown li {
  background: var(--mist);
  border-radius: 16px;
  padding: 12px 6px;
}
.countdown strong {
  display: block;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.8rem;
  color: var(--navy);
}
.countdown span { color: var(--muted); font-size: 0.8rem; letter-spacing: 0.06em; text-transform: uppercase; }
.hero-place { color: var(--muted); font-size: 0.92rem; }

.facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0 6vw 10px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.facts article { padding: 22px 18px; }
.facts article + article { border-left: 1px solid var(--line); }
.facts strong {
  display: block;
  font-family: "Fraunces", Georgia, serif;
  font-size: 2rem;
  color: var(--navy);
}
.facts span { color: var(--muted); }

.section { padding: 84px 6vw; scroll-margin-top: 96px; }
#accueil { scroll-margin-top: 96px; }
.section-mist { background: var(--mist); }
.section-head { max-width: 740px; margin-bottom: 36px; }
.section-head h2 { font-size: clamp(2rem, 3.4vw, 3.1rem); color: var(--navy-deep); }
.section-lead { margin-top: 14px; color: var(--muted); font-size: 1.05rem; }
.note { margin-top: 16px; color: var(--muted); font-size: 0.88rem; }

.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: start;
}
.about-text p + p { margin-top: 14px; }
.mission {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.mission li {
  padding: 18px 20px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1px solid var(--line);
}
.section-mist .mission li, .about-grid .mission li { background: var(--mist); }
.mission h3 { font-size: 1.35rem; margin-bottom: 6px; color: var(--navy); }
.mission p { color: var(--muted); }

.days {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.day {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px 22px 22px;
  border-top: 4px solid var(--sky);
  min-height: 250px;
}
.day-kicker { color: var(--sky-deep); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; font-weight: 600; }
.day h3 { margin: 10px 0 8px; font-size: 1.7rem; color: var(--navy-deep); }
.day-kind { font-weight: 600; color: var(--navy); }
.day-time { margin: 4px 0 12px; color: var(--sky-deep); }
.day p:last-child { color: var(--muted); }

.download {
  margin-top: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 28px;
  border-radius: 28px;
  background: var(--navy);
  color: #e7f3fa;
}
.download h3 { font-size: 1.7rem; margin-bottom: 8px; }
.download p { max-width: 62ch; color: #c5dbe8; }
.download .btn-primary { background: var(--white); color: var(--navy); flex: none; }
.download .btn-primary:hover { background: var(--sky); color: var(--white); }

.register {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 28px;
  align-items: start;
}
.form, .register-aside, .contact-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 24px;
}
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label { display: grid; gap: 6px; font-size: 0.92rem; color: var(--navy); margin-bottom: 14px; }
.optional { color: var(--muted); font-weight: 400; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 12px;
  background: #fbfdfe;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(46, 159, 232, 0.45);
  border-color: var(--sky);
}
.field-error { border-color: #b42318 !important; }
.form-status {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #e8f6ee;
  color: #146c43;
}
.register-aside h3 { margin-bottom: 12px; color: var(--navy); }
.register-aside ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.register-aside li { color: var(--muted); }
.register-aside span {
  display: block;
  color: var(--navy);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.news { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.news-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 22px;
  min-height: 240px;
  display: flex;
  flex-direction: column;
}
.news-date { color: var(--sky-deep); font-size: 0.85rem; font-weight: 600; }
.news-card h3 { margin: 10px 0 10px; font-size: 1.45rem; color: var(--navy-deep); }
.news-card p { color: var(--muted); }
.tag {
  margin-top: auto;
  padding-top: 16px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
}

.contact { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 18px; }
.contact-card h3 { margin: 18px 0 8px; color: var(--navy); font-size: 1.3rem; }
.contact-card h3:first-child { margin-top: 0; }
.map-frame {
  min-height: 360px;
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.map-frame iframe { width: 100%; height: 100%; min-height: 360px; border: 0; }

.footer {
  background: var(--navy-deep);
  color: #d5e6f0;
  padding: 42px 6vw 28px;
  display: grid;
  gap: 18px;
}
.footer-brand { display: flex; align-items: center; gap: 16px; }
.footer-brand img { width: 92px; filter: brightness(0) invert(1); }
.footer nav { display: flex; flex-wrap: wrap; gap: 16px; }
.footer a { color: #d5e6f0; text-decoration: none; }
.footer a:hover { color: var(--white); }
.footer-meta { color: #8eafc2; font-size: 0.85rem; }

@media (max-width: 980px) {
  .slide-inner, .about-grid, .register, .contact, .days, .news, .facts {
    grid-template-columns: 1fr;
  }
  .slide { min-height: 0; }
  .facts article + article { border-left: 0; border-top: 1px solid var(--line); }
  .fields { grid-template-columns: 1fr; }
  .download { flex-direction: column; align-items: flex-start; }
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 6vw 22px;
    background: var(--white);
    border-bottom: 1px solid var(--line);
  }
  .nav.is-open { display: flex; }
  .header { position: sticky; }
  .topbar { display: none; }
}

@media (max-width: 640px) {
  .slide-inner { padding: 40px 6vw 96px; }
  .section { padding: 56px 6vw; }
}
@media (prefers-reduced-motion: reduce) {
  .slide, .slide::after, .slide .hero-copy > *, .slide .hero-card, .reveal {
    transition: none;
    transform: none;
    opacity: 1;
    visibility: visible;
  }
}