/* ENEO360 GROUP — Layout : Navigation, Footer, Pages */

/* ─── Design tokens (couleurs, espacements globaux) ─── */
:root {
  --primary: #20C366;
  --primary-dark: #1ba857;
  --secondary: #061A41;
  --bg-primary: #0f172a;
  --bg-secondary: #020617;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.8);
  --text-muted: rgba(255, 255, 255, 0.6);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --nav-height: 80px;
  --container-max: 1280px;
  --radius-full: 9999px;
  --transition: 0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ─── HEADER / NAV ─── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.site-nav {
  position: relative;
  border-bottom: 1px solid var(--glass-border);
  transition: box-shadow var(--transition);
}

.site-nav::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  pointer-events: none;
}

.site-nav.is-scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.site-nav.is-scrolled::before {
  background: rgba(15, 23, 42, 0.97);
}

.site-nav__container {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-height);
}

.site-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.site-nav__logo-img {
  height: 44px;
  width: auto;
}

.site-nav__logo-img--light { display: none; }

.site-nav__panel {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex: 1;
  justify-content: flex-end;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-item { position: relative; }

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  padding: 0.5rem 0.65rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  border-radius: 0.5rem;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

button.nav-link {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  text-align: left;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--primary);
}

.nav-link__chevron {
  font-size: 1.1rem;
  transition: transform var(--transition);
}

.nav-item--has-dropdown.is-expanded .nav-link__chevron,
.nav-item--has-dropdown:hover .nav-link__chevron {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  min-width: 260px;
  list-style: none;
  background: rgba(15, 23, 42, 0.98);
  border: 1px solid var(--glass-border);
  border-radius: 0.75rem;
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.nav-item--has-dropdown:hover .nav-dropdown,
.nav-item--has-dropdown.is-expanded .nav-dropdown,
.nav-item--has-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown__link {
  display: block;
  padding: 0.6rem 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: 0.5rem;
  transition: background var(--transition), color var(--transition);
}

.nav-dropdown__link:hover,
.nav-dropdown__link.is-active {
  background: var(--glass-bg);
  color: var(--primary);
}

.nav-dropdown__link--overview {
  font-weight: 600;
  border-bottom: 1px solid var(--glass-border);
  margin-bottom: 0.25rem;
  border-radius: 0.5rem 0.5rem 0 0;
}

.nav-dropdown__separator {
  height: 1px;
  background: var(--glass-border);
  margin: 0.35rem 0.5rem;
  list-style: none;
}

.site-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.5rem;
}

.lang-switcher__btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  padding: 0.25rem 0.45rem;
  border-radius: var(--radius-full);
  transition: color var(--transition), background var(--transition);
  text-decoration: none;
  display: inline-block;
}

.lang-switcher__btn:hover { color: var(--text-primary); }

.lang-switcher__btn.is-active {
  background: var(--primary);
  color: #fff;
}

.lang-switcher__sep {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.65rem 1.25rem;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 0 20px rgba(32, 195, 102, 0.3);
}

.site-nav__cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 0 30px rgba(32, 195, 102, 0.45);
}

.site-nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  width: 44px;
  height: 44px;
  border-radius: 0.5rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ─── PAGE CONTENT ─── */
.site-main {
  padding-top: var(--nav-height);
  min-height: 60vh;
}

.page-hero {
  padding: 4rem 1.5rem 3rem;
  background: linear-gradient(135deg, rgba(32, 195, 102, 0.08), rgba(6, 26, 65, 0.4));
  border-bottom: 1px solid var(--glass-border);
}

.page-hero__container {
  max-width: var(--container-max);
  margin: 0 auto;
}

.page-hero__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 1rem;
}

.page-hero__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1rem;
  max-width: 800px;
}

.page-hero__lead {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 640px;
}

.page-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.expertise-card {
  display: block;
  padding: 1.5rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--transition), transform var(--transition);
}

.expertise-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.expertise-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.expertise-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb a:hover { color: var(--primary); }

/* ─── FOOTER ─── */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--glass-border);
  padding: 3.5rem 0 0;
}

.site-footer__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
}

.site-footer__logo img {
  height: 40px;
  margin-bottom: 1rem;
}

.site-footer__intro {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  max-width: 340px;
}

.site-footer__contact {
  list-style: none;
  font-size: 0.875rem;
}

.site-footer__contact li {
  margin-bottom: 0.4rem;
  color: var(--text-muted);
}

.site-footer__contact a {
  color: var(--text-secondary);
  text-decoration: none;
}

.site-footer__contact a:hover { color: var(--primary); }

.site-footer__heading {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.site-footer__links {
  list-style: none;
}

.site-footer__links li { margin-bottom: 0.45rem; }

.site-footer__links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition);
}

.site-footer__links a:hover { color: var(--primary); }

.site-footer__newsletter-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.site-footer__newsletter-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-footer__newsletter-form input {
  padding: 0.65rem 0.85rem;
  border-radius: 0.5rem;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.site-footer__newsletter-form input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.site-footer__newsletter-form button {
  padding: 0.65rem 1rem;
  border: none;
  border-radius: 0.5rem;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background var(--transition);
}

.site-footer__newsletter-form button:hover {
  background: var(--primary-dark);
}

.site-footer__bottom {
  border-top: 1px solid var(--glass-border);
  padding: 1.25rem 0;
  text-align: center;
}

.site-footer__bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ─── RESPONSIVE ─── */
@media (max-width: 1100px) {
  .site-nav__list { gap: 0; }
  .nav-link { font-size: 0.8rem; padding: 0.45rem 0.5rem; }
}

@media (max-width: 1024px) {
  .site-nav__toggle {
    display: flex;
    position: relative;
    z-index: 1001;
  }

  .site-nav__panel {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100vh - var(--nav-height));
    height: calc(100dvh - var(--nav-height));
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 1.5rem;
    padding-bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
    background: rgba(15, 23, 42, 0.98);
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    transform: translateX(100%);
    transition: transform var(--transition);
    gap: 1.5rem;
    z-index: 1000;
  }

  .site-nav__panel.is-open { transform: translateX(0); }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .nav-link {
    width: 100%;
    padding: 0.85rem 0.5rem;
    font-size: 1rem;
    justify-content: space-between;
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0;
    margin-left: 0.75rem;
    transition: max-height var(--transition), visibility var(--transition);
  }

  .nav-item--has-dropdown.is-expanded .nav-dropdown {
    visibility: visible;
    max-height: 50rem;
    overflow: visible;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
  }

  .site-nav__actions {
    flex-direction: column;
    width: 100%;
    align-items: stretch;
  }

  .site-nav__cta {
    justify-content: center;
    padding: 0.85rem 1.25rem;
  }

  .lang-switcher { justify-content: center; }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }

  .page-hero { padding: 3rem 1.25rem 2rem; }
}