:root {
  /* Palette adaptée au logo */
  --main: #314348;
  --main-hover: #223035;
  --main-light: #eaf2f4;
  --main-bg: #fff;
  --accent: #b2d2d9;
  --gray-dark: #23272b;
  --gray-light: #F5F8FA;
  --white: #fff;
  --shadow: 0 4px 24px 0 rgba(44, 62, 80, 0.09);

  /* Typo */
  --font-title: 'Playfair Display', serif;
  --font-main: 'Inter', Arial, sans-serif;

  --radius: 1.5rem;
  --radius-sm: .8rem;
  --space: 3rem;
  --container: 1180px;
  --transition: .2s cubic-bezier(.4,0,.2,1);

  /* Dark mode */
  --dm-bg: #1b2123;
  --dm-card: #22282b;
  --dm-main: #fff;
  --dm-accent: #e1edf2;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-main);
  color: var(--main);
  background: var(--main-light);
}
*, *:before, *:after { box-sizing: border-box; }
img { max-width: 100%; display: block; }
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.2rem;
}

/* Headings */
h1, h2, h3, h4, h5 {
  font-family: var(--font-title);
  color: var(--main);
  margin-top: 0;
  font-weight: 700;
}
h1.hero-title { font-size: 2.8rem; margin-bottom: 1.2rem; }
h2 { font-size: 2rem; margin-bottom: 2rem; }
h3 { font-size: 1.3rem; margin-bottom: .7rem; }
.hero-highlight { color: var(--main); font-weight: 700; font-size: 2rem; }

a { color: var(--main-hover); text-decoration: none; }
a:hover, a:focus { color: var(--accent); }

ul { list-style: none; padding: 0; margin: 0; }
button { font-family: inherit; }

.header {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--main-bg);
  box-shadow: 0 2px 12px 0 rgba(44,62,80,0.10);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.nav {
  display: flex; align-items: center; justify-content: space-between; min-height: 62px;
}
.logo img { height: 42px; width: auto; }
.nav-menu {
  display: flex; gap: 2.3rem; align-items: center; margin: 0;
}
.nav-menu li a {
  color: var(--main);
  font-weight: 600;
  font-size: 1.13rem;
  padding: 8px 0;
  letter-spacing: .01em;
  transition: color var(--transition);
}
.nav-toggle {
  background: none; border: none; display: none;
  font-size: 2rem; color: var(--main); cursor: pointer;
}
#darkmode-toggle {
  background: none; border: none; margin-left: 1rem; font-size: 1.35rem; cursor: pointer; color: var(--main);
  transition: color var(--transition);
}

/* Hero */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  background: url('Banniere.png') center/cover no-repeat, var(--main-light);
  padding: var(--space) 0 2rem;
  text-align: center;
  position: relative;
}
.hero-content { max-width: 700px; margin: 0 auto; background: rgba(255,255,255,0.80); border-radius: 2rem; padding: 2rem 1rem; }
.hero-desc { font-size: 1.25rem; margin-bottom: 2.2rem; color: var(--main); }
.cta-btn {
  display: inline-block;
  background: var(--main);
  color: var(--white);
  padding: 1rem 2.2rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1.2rem;
  font-weight: 700;
  box-shadow: var(--shadow);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}
.cta-btn:hover, .cta-btn:focus {
  background: var(--main-hover);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 32px 0 rgba(44,62,80,0.12);
}

/* About */
.about {
  background: var(--main-bg);
  padding: var(--space) 0;
}
.about-content { display: flex; align-items: center; gap: 3.5rem; flex-wrap: wrap; }
.about-text { flex: 2 1 330px; }
.about-img { flex: 1 1 220px; min-width: 180px; max-width: 320px; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }

.services {
  background: var(--main-light);
  padding: var(--space) 0;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}
.service-card {
  background: var(--main-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.2rem 1.2rem 1.5rem 1.2rem;
  text-align: center;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  outline: 2px solid transparent;
  font-size: 1.15rem;
  position: relative;
}
.service-card:hover,
.service-card:focus {
  transform: translateY(-8px) scale(1.045);
  background: var(--accent);
  box-shadow: 0 8px 32px 0 rgba(44,62,80,0.16);
  outline: 2px solid var(--main);
}
.service-card i {
  font-size: 2.4rem;
  color: var(--main);
  margin-bottom: 1.1rem;
  transition: color var(--transition);
}

/* Couleur icône service dark mode */
body.dark .service-card i {
  color: #fff !important;
}

.modal {
  position: fixed;
  z-index: 1500;
  inset: 0;
  background: rgba(49, 67, 72, 0.65);
  display: none;
  align-items: center;
  justify-content: center;
  animation: none;
}
.modal.open {
  display: flex;
  animation: fadeIn .22s cubic-bezier(.4,0,.2,1);
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.modal-content {
  background: var(--main-bg);
  border-radius: 2rem;
  min-width: 340px;
  width: 520px;
  max-width: 96vw;
  padding: 2.2rem 2rem 2.2rem 2rem;
  box-shadow: 0 12px 48px 0 rgba(44,62,80,0.21);
  position: relative;
  transform: translateY(10px);
  animation: slideUp .16s cubic-bezier(.4,0,.2,1);
}
@keyframes slideUp { from { transform: translateY(60px); opacity: 0; } to { transform: translateY(10px); opacity: 1; } }
.close-modal {
  position: absolute; top: 1.2rem; right: 1.2rem; background: none; border: 2px solid var(--main); border-radius: 6px;
  font-size: 1.7rem; color: var(--main); cursor: pointer; transition: color var(--transition), background var(--transition);
  padding: .12rem .45rem;
}
.close-modal:hover, .close-modal:focus { background: var(--main); color: var(--white); }
.modal-desc {
  margin-bottom: 1.1rem;
  font-size: 1.08rem;
  color: var(--main-hover);
  font-family: var(--font-main);
}

.close-modal:hover,
.close-modal:focus {
  background: var(--main);
  color: var(--white) !important;
  border-color: var(--main);
}
body.dark .close-modal:hover,
body.dark .close-modal:focus {
  background: var(--accent);
  color: var(--main) !important;
  border-color: var(--accent);
}
body.dark .close-modal {
  color: var(--dm-main);
  border-color: var(--dm-main);
}

.modal-gallery-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
  margin-top: 1rem;
}
.modal-gallery-grid > div {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--main-light);
  border-radius: 1.1rem;
  padding: .4rem;
  box-shadow: 0 1px 8px 0 rgba(44,62,80,0.10);
}
.modal-gallery-grid img {
  width: 120px; height: 80px; object-fit: cover; border-radius: .9rem;
  margin-bottom: .4rem;
}
.modal-gallery-grid span {
  font-size: .97rem;
  color: var(--main-hover);
}

/* RÉFÉRENCES (logos 3 colonnes + témoignages en dessous) */
.references {
  background: var(--main-bg);
  padding: var(--space) 0 2.5rem;
}
.references-table {
  display: flex;
  flex-direction: column;
  gap: 2.2rem;
}
.references-row {
  display: flex;
  gap: 2.2rem;
  justify-content: center;
  align-items: stretch;
}
.references-row--logos .reference-logo {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.reference-logo img {
  max-height: 62px;
  margin: 0 auto 1rem auto;
  filter: grayscale(30%);
  background: #fff !important;
  border-radius: 1.1rem;
  box-shadow: 0 2px 12px 0 rgba(44,62,80,0.09);
  padding: 10px 28px;
  transition: filter var(--transition), box-shadow var(--transition);
}
.reference-logo img:hover { filter: grayscale(0%); box-shadow: 0 8px 22px 0 rgba(49,67,72,.13); }

/* DARK MODE - logos ref pas touchés */
body.dark .reference-logo img {
  filter: grayscale(30%) !important;
  background: #fff !important;
}

.references-row--testimonials .testimonial {
  flex: 1 1 0;
  background: var(--main-light);
  border-radius: 1.1rem;
  padding: 1.2rem 1rem 1.2rem 1rem;
  font-size: 1.08rem;
  color: var(--main-hover);
  box-shadow: 0 2px 10px 0 rgba(44,62,80,0.08);
  margin: 0 0.7rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Témoignages, continuité */
.testimonial blockquote {
  margin: 0;
  font-style: italic;
}
.testimonial footer {
  margin-top: 1rem;
  font-size: 1.04rem;
  color: var(--main);
  font-weight: 600;
  font-style: normal;
}

/* CONTACT */
.contact {
  background: var(--main-light);
  padding: var(--space) 0;
}
.contact-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  align-items: flex-start;
  justify-content: space-between;
}
.contact-cta {
  flex: 1 1 270px;
  min-width: 230px;
  max-width: 340px;
  font-size: 1.08rem;
  color: var(--main) !important;
}
.contact-cta .contact-info {
  margin-top: 2.2rem;
  line-height: 1.8;
  color: var(--main) !important;
}
body.dark .contact-cta, body.dark .contact-cta .contact-info {
  color: var(--main) !important;
}

body.dark .contact-cta,
body.dark .contact-cta * {
  color: #23272b !important;
}

.contact-form {
  background: var(--main-bg);
  padding: 2.5rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  flex: 1 1 380px;
  min-width: 260px;
  max-width: 500px;
}
.contact-form label {
  font-weight: 600;
  color: var(--main-hover);
  font-size: 1.1rem;
}
.contact-form input,
.contact-form textarea {
  border: 1px solid #C9D4D9;
  border-radius: var(--radius-sm);
  font-size: 1.07rem;
  padding: .6rem .8rem;
  font-family: var(--font-main);
  background: var(--main-light);
  transition: border var(--transition), background var(--transition), color var(--transition);
  color: var(--main);
}
.contact-form input:focus,
.contact-form textarea:focus {
  border: 1.5px solid var(--main);
  outline: none;
  background: #f3f6f7;
  color: var(--main-hover);
}
.contact-form button { align-self: flex-start; margin-top: 1.2rem; }

/* Footer */
.footer {
  background: var(--main);
  color: var(--white);
  padding: 3rem 0 1.3rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 2.5rem;
  justify-content: space-between;
  margin-bottom: 1.3rem;
}
.footer-col h4 {
  font-size: 1.15rem;
  margin-bottom: .9rem;
  font-family: var(--font-title);
  color: var(--accent);
}
.footer-col ul { margin-bottom: 0; }
.footer-col ul li { margin-bottom: .6rem; color: var(--white); }
.footer-col ul li a { color: var(--dm-accent); text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid #495163;
  font-size: 1rem;
  color: #d9e5e9;
  padding-top: 1rem;
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
}
.footer-copy { margin-left: auto; }

/* DARK MODE */
body.dark {
  background: var(--dm-bg);
  color: var(--dm-main);
}
body.dark .header,
body.dark .modal-content,
body.dark .contact-form,
body.dark .about,
body.dark .services,
body.dark .references,
body.dark .footer,
body.dark .footer-col,
body.dark .references-table,
body.dark .modal-gallery-grid > div {
  background: var(--dm-card) !important;
  color: var(--dm-main) !important;
}
body.dark .nav-menu li a,
body.dark .nav-toggle,
body.dark #darkmode-toggle,
body.dark h1, body.dark h2, body.dark h3, body.dark h4, body.dark h5,
body.dark label {
  color: var(--dm-main) !important;
}
body.dark .footer-col h4 {
  color: var(--accent);
}
body.dark .footer-col ul li a { color: var(--accent); }
body.dark .service-card, body.dark .testimonial {
  background: #1e2325 !important; color: var(--dm-main);
}

body.dark .testimonial footer {
  color: var(--dm-main) !important;
}

body.dark .service-card:hover, body.dark .service-card:focus {
  background: #28313c !important;
}
body.dark .cta-btn {
  background: var(--accent); color: var(--main);
}
body.dark .cta-btn:hover, body.dark .cta-btn:focus {
  background: #e1edf2; color: var(--main);
}
body.dark .modal {
  background: rgba(27,33,35,0.85);
}
body.dark .contact-form input,
body.dark .contact-form textarea {
  background: #23292b;
  color: var(--dm-main);
  border: 1px solid #3a4143;
}
body.dark .contact-form input:focus,
body.dark .contact-form textarea:focus {
  background: #283036;
  border: 1.5px solid var(--accent);
  color: var(--dm-accent);
}
body.dark .modal-content h3,
body.dark .modal-content .modal-desc,
body.dark .modal-gallery-grid span { color: var(--dm-main); }
body.dark .hero-content { background: rgba(30,38,44,0.93); }
body.dark .hero-title, body.dark .hero-highlight, body.dark .hero-desc { color: var(--dm-main) !important; }
body.dark .about-img img { filter: brightness(0.85); }

body.dark .logo-img {
  filter: brightness(1.7);
}
body.dark #logo-header {
  content: url('Logo-white.png');
}

/* Responsive */
@media (max-width: 1100px) {
  .container { max-width: 96vw; }
}
@media (max-width: 900px) {
  .about-content, .contact-content, .footer-grid {
    flex-direction: column;
    gap: 2rem;
    display: flex !important;
  }
  .references-row { flex-direction: column; gap: 0; }
  .references-row--logos, .references-row--testimonials { flex-direction: row; }
}
@media (max-width: 800px) {
  .contact-content {
    flex-direction: column !important;
    align-items: stretch;
    gap: 2.5rem;
  }
  .contact-form, .contact-cta {
    max-width: 100%;
    width: 100%;
  }
}
@media (max-width: 700px) {
  .hero-content { padding: 1.1rem .4rem; }
  .references-table, .references-row, .references-row--logos, .references-row--testimonials, .footer-grid {
    flex-direction: column !important;
    gap: 1.3rem;
    display: flex !important;
    align-items: stretch !important;
  }
  .modal-content {
    min-width: unset;
    width: 98vw;
    padding: 1.1rem .4rem;
  }
  .modal-gallery-grid {
    grid-template-columns: 1fr;
    gap: .7rem;
  }
  .reference-logo img {
    max-width: 90vw;
    padding: 10px 8vw;
  }
  .testimonial {
    margin: 0;
    font-size: 1rem;
  }
  .footer {
    padding: 2.1rem 0 0.7rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.1rem;
  }
}

@media (max-width: 520px) {
  h1.hero-title { font-size: 1.25rem; }
  .hero-highlight { font-size: 1rem; }
  h2 { font-size: 1.09rem; }
  .about-content { gap: .2rem; }
  .services-grid { gap: .4rem; }
}

/* Menu mobile */
@media (max-width: 820px) {
  .nav-menu {
    position: absolute;
    top: 62px;
    left: 0;
    right: 0;
    background: var(--main-bg);
    flex-direction: column;
    gap: 1.2rem;
    box-shadow: 0 12px 44px 0 rgba(44,62,80,0.13);
    padding: 2.2rem 1rem 1.2rem 1rem;
    display: none;
    z-index: 500;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
}

/* Scroll reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .75s cubic-bezier(.4,0,.2,1), transform .65s cubic-bezier(.4,0,.2,1);
}
[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.hide { display: none !important; }
.visible { display: block !important; }