/* HEP Collective - page d'accueil - charte couleurs v2 */

:root {
  --violet-depart: #74148B;
  --violet-magenta-2: #5B1EB4;
  --violet-magenta-3: #8A2BE2;
  --violet-magenta-4: #F03EDB;
  --bleu-cyan-1: #2A2761;
  --bleu-cyan-2: #2F45E1;
  --bleu-cyan-3: #2F7DE1;
  --bleu-cyan-4: #27A2DA;
  --bleu-cyan-5: #1FC8D4;

  --fond-clair: #FFFFFF;
  --fond-carte: #F6F5FA;
  --bordure-carte: #E3E1EA;
  --texte: #1C1B24;
  --titre: #74148B;
  --bouton: #5B4B95;

  --gradient-marque: linear-gradient(90deg,
    var(--violet-depart), var(--violet-magenta-2), var(--violet-magenta-3), var(--violet-magenta-4),
    var(--bleu-cyan-3), var(--bleu-cyan-4), var(--bleu-cyan-5));
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--texte);
  background-color: var(--fond-clair);
  line-height: 1.6;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 56px 0;
}

/* En-tete */

.site-header {
  padding: 24px 0;
  border-bottom: 3px solid transparent;
  border-image: var(--gradient-marque) 1;
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}

.header-back-zone {
  justify-self: start;
}

.header-inner .brand-box {
  justify-self: center;
}

.header-inner .nav-menu {
  justify-self: end;
}

@media (max-width: 700px) {
  .header-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }

  .header-back-zone,
  .header-inner .brand-box,
  .header-inner .nav-menu {
    justify-self: center;
  }
}

.logo {
  max-height: 90px;
  width: auto;
}

.header-brand-text {
  display: flex;
  flex-direction: column;
}

.header-title {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--bleu-cyan-1);
  letter-spacing: 0.01em;
}

.header-tagline {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--texte);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header--dark {
  background-color: var(--bleu-cyan-1);
}

.site-header--dark .header-title {
  color: #FFFFFF;
}

/* Menu deroulant de l'en-tete */

.brand-box {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-box .logo {
  max-height: 100px;
}

.brand-box .header-title {
  color: #FFFFFF;
}

.brand-box .header-tagline {
  color: #C9C6E0;
}

.nav-menu {
  position: relative;
}

.nav-menu-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  background-color: var(--fond-carte);
  border: 1px solid var(--bordure-carte);
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  color: var(--titre);
}

.nav-menu-toggle::-webkit-details-marker {
  display: none;
}

.nav-menu-chevron {
  width: 16px;
  height: 16px;
  transition: transform 0.2s ease;
}

.nav-menu[open] .nav-menu-chevron {
  transform: rotate(180deg);
}

.nav-menu-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background-color: #FFFFFF;
  border: 1px solid var(--bordure-carte);
  border-radius: 12px;
  padding: 8px;
  margin: 0;
  list-style: none;
  min-width: 220px;
  box-shadow: 0 8px 24px rgba(28, 27, 36, 0.15);
  z-index: 20;
}

.nav-menu-list li a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  color: var(--texte);
  text-decoration: none;
  font-size: 0.95rem;
}

.nav-menu-list li a:hover,
.nav-menu-list li a:focus-visible {
  background-color: var(--fond-carte);
  color: var(--titre);
}

@media (max-width: 600px) {
  .nav-menu-list {
    right: auto;
    left: 0;
  }
}

.site-header--dark .header-tagline {
  color: #C9C6E0;
}

/* Description de l'ecosysteme + photo et citation */

.intro-quote {
  background-color: var(--fond-clair);
}

.intro-quote-layout {
  display: flex;
  align-items: center;
  gap: 64px;
}

.intro-column {
  flex: 1.3 1 0%;
}

.hero-quote {
  width: 100%;
  max-width: none;
  margin: 0 0 40px 0;
  padding: 0 0 24px 0;
  border-bottom: 3px solid;
  border-image: var(--gradient-marque) 1;
  text-align: center;
}

.hero-quote p {
  font-size: 1.3rem;
  font-style: italic;
  color: var(--titre);
  margin: 0 0 12px 0;
}

.hero-quote footer {
  font-size: 1rem;
  color: var(--texte);
  font-style: normal;
}

.intro-lead {
  max-width: 620px;
  text-align: left;
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--titre);
  margin: 0 0 24px 0;
}

.intro-text {
  max-width: 620px;
  text-align: left;
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--texte);
  margin: 0;
}

.quote-column {
  flex: 1 1 0%;
  display: flex;
  justify-content: center;
}

.photo-frame {
  position: relative;
  width: 100%;
  max-width: 330px;
  aspect-ratio: 1 / 1;
  background-color: #E9E7F0;
  border: 1px solid var(--bordure-carte);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-frame .photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-placeholder-fallback {
  display: none;
  position: absolute;
  inset: 0;
  align-items: center;
  justify-content: center;
  color: #6B6878;
  font-size: 0.95rem;
  font-style: italic;
  background-color: #E9E7F0;
}

/* Vignettes */

.activities {
  background-color: var(--fond-clair);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background-color: var(--fond-carte);
  border: 1px solid var(--bordure-carte);
  border-radius: 12px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-logo {
  display: flex;
  justify-content: center;
}

.card-logo-img {
  max-height: 56px;
  width: auto;
}

.card-title {
  color: var(--titre);
  font-size: 1.4rem;
  margin: 0;
  text-align: center;
}

.card-text {
  color: var(--texte);
  font-size: 1rem;
  margin: 0;
  flex-grow: 1;
}

.btn {
  display: inline-block;
  align-self: center;
  background-color: var(--bouton);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  border: 2px solid transparent;
  transition: border-color 0.2s ease, background-image 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  background-color: var(--bouton);
  background-image: var(--gradient-marque);
  border-color: transparent;
}

.btn:focus-visible {
  outline: 3px solid var(--bleu-cyan-3);
  outline-offset: 2px;
}

/* Pied de page partage */

.site-footer {
  background-color: var(--bleu-cyan-1);
  color: #FFFFFF;
  padding: 40px 0 20px 0;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-brand {
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0;
}

.footer-tagline {
  font-size: 0.85rem;
  color: #C9C6E0;
  margin: 4px 0 0 0;
}

.footer-nav,
.footer-legal {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav a,
.footer-legal a {
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.9rem;
}

.footer-nav a:hover,
.footer-nav a:focus-visible,
.footer-legal a:hover,
.footer-legal a:focus-visible {
  text-decoration: underline;
}

.footer-copyright {
  text-align: center;
  font-size: 0.8rem;
  color: #C9C6E0;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

@media (max-width: 700px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
}

/* Responsive */

@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .intro-quote-layout {
    flex-direction: column;
    align-items: stretch;
    gap: 40px;
  }

  .photo-frame {
    max-width: 260px;
    margin: 0 auto;
  }
}

@media (max-width: 600px) {
  .section {
    padding: 40px 0;
  }

  .hero-quote p {
    font-size: 1.15rem;
  }

  .intro-lead {
    font-size: 1.2rem;
  }

  .intro-text {
    font-size: 1.05rem;
  }

  .header-brand-text {
    align-items: center;
  }

  .logo {
    max-height: 64px;
  }

  .header-title {
    font-size: 1.4rem;
  }
}