/* ====================================
   Variables globales
==================================== */
:root {
  --color-primary: #3ab396;
  --color-white: #ffffff;
  --text-color: #333333;
  --font-base: 'Poppins', sans-serif;
  --transition-fast: 0.3s ease-in-out;
  --header-height: 4rem;
}

/* ====================================
   Reset & Base
==================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-base);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--color-white);
}

.main {
  padding: 0 4rem;
}

/* ====================================
   Boutons généraux
==================================== */
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  transition: filter var(--transition-fast);
}
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}
.btn--primary:hover,
.btn--primary:focus {
  filter: brightness(0.9);
}

/* ====================================
   Header sticky
==================================== */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: var(--color-white);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  z-index: 1000;
}

/* ---- Ligne haute du header ---- */
.header__top {
  border-bottom: none;
}

/* Conteneur principal */
.header__container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 4rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* Logo */
.header__logo img {
  max-height: 50px;
  width: auto;
  display: block;
}

/* Nav desktop */
.header__nav {
  flex: 1;
}
.nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin-left: 3rem;
}
.nav__item {
  position: relative;
}

/* Liens & toggle méga */
.nav__link,
.nav__link--mega-toggle {
  all: unset;
  cursor: pointer;
  font: 500 0.95rem var(--font-base);
  color: var(--text-color);
  white-space: nowrap;
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}
.nav__link::after,
.nav__link--mega-toggle::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}
.nav__link:hover::after,
.nav__link:focus::after,
.nav__link--mega-toggle:hover::after,
.nav__link--mega-toggle:focus::after {
  width: 100%;
}
.nav__link:hover,
.nav__link:focus,
.nav__link--mega-toggle:hover,
.nav__link--mega-toggle:focus {
  color: var(--color-primary);
}

/* Icône du méga-toggle */
.nav__mega-icon {
  display: inline-block;
  margin-left: 0.25rem;
  transition: transform var(--transition-fast);
  transform-origin: center;
}
.header.mega-open .nav__mega-icon {
  transform: rotate(180deg);
}

/* Téléphone (desktop) */
.nav__phone {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font: 500 1.1rem var(--font-base);
  color: var(--text-color);
  text-decoration: none;
  margin-right: 3rem;
}
.icon-tel {
  max-height: 25px;
}

/* Bouton Devis */
@keyframes slow-pulse {
  0%,50%,100% { transform: scale(1); }
  5%,55%     { transform: scale(1.05); }
}
.header__cta {
  margin-left: auto;
  animation: slow-pulse 20s ease-in-out infinite;
  animation-delay: 3s;
}

/* ---- Bloc méga-menu (desktop) ---- */
.header__mega {
  position: absolute;
  top: calc(100% - 1px);
  left: 0;
  right: 0;
  background: var(--color-white);
  box-shadow: 0 8px 16px -8px rgba(0,0,0,0.1);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s ease-in-out;
  z-index: 999;
}
.header.mega-open {
  box-shadow: none;
}
.header.mega-open .header__mega {
  max-height: 600px; /* ajustez selon contenu */
}

/* Mega-menu interne (desktop) */
.mega-menu {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  justify-content: space-between;
  column-gap: 3rem;
  row-gap: 1.5rem;
  padding: 1.5rem 4rem;
}
.mega-menu__column {
  display: flex;
  flex-direction: column;
}
.mega-menu__title {
  display: flex;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  color: #222;
  margin-bottom: 0.75rem;
}
.mega-menu__icon {
  width: 20px;
  height: 20px;
  margin-right: 0.6rem;
}
.mega-menu__list {
  list-style: none;
}
.mega-menu__list li + li {
  margin-top: 0.5rem;
}
.mega-menu__list a {
  font-size: 0.9rem;
  line-height: 1.4;
  color: #555;
  text-decoration: none;
  transition: color var(--transition-fast), transform 0.2s;
}
.mega-menu__list a:hover,
.mega-menu__list a:focus {
  color: var(--color-primary);
  transform: translateX(4px);
}

/* Responsive grid breakpoints */
@media (max-width: 1400px) {
  .mega-menu {
    grid-template-columns: repeat(3,1fr);
  }
}
@media (max-width: 1100px) {
  .mega-menu {
    grid-template-columns: repeat(2,1fr);
    padding: 1rem 2rem;
  }
}

/* ====================================
   ENTRE 1320px ET 781px
   • Pas de hamburger
   • On cache seulement Installation alarme & Vidéosurveillance
==================================== */
@media screen and (max-width: 1320px) and (min-width: 781px) {
  .header__nav .nav__list > li:nth-child(2),
  .header__nav .nav__list > li:nth-child(3) {
    display: none !important;
  }
  .header__toggle {
    display: none !important;
  }
  .header__logo,
  .header__nav,
  .header__cta,
  .nav__phone {
    display: inline-flex !important;
    align-items: center;
  }
  .header__top .header__container {
    justify-content: space-between;
  }
}

/* ====================================
   ENTRE 1110px ET 781px
   • On masque tous les items sauf “Nos services” et “Avis clients”
   • Téléphone visible
   • Le méga-menu s’ouvre en grid à 2 colonnes
==================================== */
@media screen and (max-width: 1110px) and (min-width: 781px) {
  .header__nav {
    display: flex !important;
    flex: 1;
  }
  .header__nav .nav__list {
    display: flex !important;
    gap: 1rem;
    margin-left: 0;
  }
  .header__nav .nav__list > li:not(.nav__item--mega):not(:nth-child(4)) {
    display: none !important;
  }
  .nav__phone {
    display: flex !important;
    align-items: center;
    gap: 0.5rem;
  }
  .header__container {
    justify-content: space-between;
    padding: 1rem 2rem;
  }

  /* Preserve the desktop grid layout */
  .header__mega .mega-menu {
    display: grid !important;
    grid-template-columns: repeat(2,1fr) !important;
    column-gap: 2rem !important;
    row-gap: 1rem !important;
    padding: 1rem 2rem !important;
  }
  .header__mega .mega-menu__column {
    padding: 0 !important;
    border: none !important;
  }
}

/* ====================================
   COLLAPSE SLIDE (≤1110px)
   • fluid slide-down/up like desktop
==================================== */
@media screen and (max-width: 1110px) {
  .header__mega {
    display: block !important;
    position: absolute !important;
    top: calc(100% - 1px) !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--color-white) !important;
    box-shadow: 0 8px 16px -8px rgba(0,0,0,0.1) !important;
    overflow: hidden !important;
    max-height: 0 !important;
    transition: max-height 0.4s ease-in-out !important;
  }
  .header.mega-open .header__mega {
    max-height: calc(80vh - var(--header-height)) !important;
  }
}

/* ====================================
   MOBILE LAYOUT & SLIDE (≤780px)
==================================== */
@media (max-width: 780px) {
  .header__nav {
    display: none !important;
  }
  .nav__phone {
    margin-right: 0;
  }
  .header__container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 1rem 2rem;
  }
  .header__logo {
    margin-right: auto;
  }
  .header__logo img {
    max-height: 35px;
  }
  .header__cta {
    margin: 0;
    padding: 0.3rem 0.5rem;
    font-size: 0.7rem;
  }
  .header__toggle {
    display: block;
    margin-left: 0.3rem;
  }

  /* mobile layout for mega-menu columns */
  .header__mega .header__container,
  .header__mega .mega-menu {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 0.5rem !important;
    padding: 0.5rem 1rem !important;
  }
  .header__mega .mega-menu__column {
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    padding-bottom: 0.5rem !important;
    border-bottom: 1px solid #eee !important;
  }
  .header__mega .mega-menu__list {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }
  .header__mega .mega-menu__list li + li {
    margin-top: 0.3rem !important;
  }
  .header__mega .mega-menu__list a {
    font-size: 0.7rem !important;
    padding: 0.25rem 0 !important;
    display: block !important;
    width: 100% !important;
    line-height: 0.85 !important;
  }
  .header__mega .mega-menu__title {
    font-size: 0.8rem !important;
    margin-bottom: 0.3rem !important;
  }
  .header__mega .mega-menu__icon {
    width: 15px !important;
    height: 15px !important;
    margin-right: 0.4rem !important;
  }
}

/* ====================================
   SOUS 845px
   • Masque le texte, garde l’icône
==================================== */
@media (max-width: 845px) {
  .nav__phone {
    font-size: 0 !important;
  }
}

/* ====================================
   Hamburger icon – 3 barres → croix
==================================== */
.header__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  padding: 0.6rem;
}
.header__toggle-icon,
.header__toggle-icon::before,
.header__toggle-icon::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 24px;
  height: 2px;
  background-color: var(--text-color);
  transition: top var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
  transform: translateX(-50%);
}
.header__toggle-icon { top: 50%; }
.header__toggle-icon::before { top: calc(50% - 9px); }
.header__toggle-icon::after  { top: calc(50% + 8px); }

@media (max-width: 780px) {
  .header__toggle { display: block; }
}
.header.mobile-open .header__toggle-icon {
  background-color: transparent;
}
.header.mobile-open .header__toggle-icon::before,
.header.mobile-open .header__toggle-icon::after {
  top: 50%;
  background-color: var(--color-primary);
}
.header.mobile-open .header__toggle-icon::before {
  transform: translateX(-50%) rotate(45deg);
}
.header.mobile-open .header__toggle-icon::after {
  transform: translateX(-50%) rotate(-45deg);
}

/* ====================================
   Footer global
==================================== */
.footer {
  background-color: #222;
  color: #ddd;
  padding: 3rem 2rem 1rem;
}
.footer__top {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
  margin-bottom: 2rem;
}
.footer__links a {
  color: #ddd;
  text-decoration: none;
  margin-bottom: 0.5rem;
  display: block;
  transition: color var(--transition-fast);
}
.footer__links a:hover {
  color: var(--color-primary);
}
.footer__contact address {
  font-style: normal;
  line-height: 1.5;
}
.footer__social a {
  margin-right: 1rem;
}
.footer__social img {
  width: 24px;
  height: 24px;
}
.footer__bottom {
  text-align: center;
  font-size: 0.875rem;
}