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

body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: #333;
}

/* HEADER */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: linear-gradient(90deg, #001f3f, #003366);
  color: #00bfff;
  z-index: 1000;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links li a {
  color: #ffffff;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease, transform 0.3s ease;
}

.nav-links li a:hover {
  color: #00bfff;
  transform: scale(1.05);
}

.menu-toggle {
  display: none;
  font-size: 2rem;
  cursor: pointer;
  color: #00bfff;
}

@media (max-width:768px){
  .nav-links {
    position: absolute;
    top: 100%;
    right: 0;
    background: #001f3f;
    flex-direction: column;
    width: 200px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .nav-links.active { max-height: 500px; }
  .menu-toggle { display:block; }
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0rem 2rem;
}

.logo span {
  color: #00bfff;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: color 0.3s;
}

.nav-links a:hover {
  color: #00bfff;
}

.menu-toggle {
  display: none;
  font-size: 1.8rem;
  cursor: pointer;
}

.hero {
  background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://via.placeholder.com/1600x700') center/cover;
  color: white;
  text-align: center;
  padding: 8rem 2rem;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.btn {
  display: inline-block;
  background: #00bfff;
  color: white;
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  transition: background 0.3s;
}

.btn:hover {
  background: #008fcc;
}

.accueil {
  position: relative;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  overflow: hidden;
  margin-top: calc(80px + 2rem);

  font-family: "Poppins", sans-serif;
}

.carousel {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.carousel-slide.active {
  opacity: 1;
}

/* Contenu centré */
.accueil-content {
  text-align: center;
  padding: 0 2rem;
}

.accueil-content h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  text-shadow: 0 0 20px rgba(0, 255, 255, 0.7);
}

.accueil-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

.accueil-content .btn {
  padding: 0.8rem 2rem;
  background: #00eaff;
  color: #001f3f;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s ease;
}

.accueil-content .btn:hover {
  background: #00bfff;
}


.services, .apropos, .contact {
  padding: 4rem 2rem;
  text-align: center;
}

.service-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  margin-top: 2rem;
}

.service-card {
  background: #f4f4f4;
  padding: 2rem;
  border-radius: 10px;
  width: 300px;
  transition: transform 0.3s;
}

.service-card:hover {
  transform: translateY(-10px);
}

.apropos-content {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: center;
  margin-top: 2rem;
}

.apropos-content img {
  border-radius: 10px;
  max-width: 400px;
}

.contact form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

.contact input, .contact textarea {
  padding: 0.8rem;
  border: 1px solid #ccc;
  border-radius: 5px;
}

footer {
  background: white;
  color: black;
  text-align: center;
  padding: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    background: #0a1f44;
    position: absolute;
    top: 60px;
    right: 0;
    width: 200px;
    text-align: right;
    padding: 1rem;
  }

  .nav-links.active {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .service-container, .apropos-content {
    flex-direction: column;
  }
}



/* SECTION PROJETS */
.projets {
  position: relative;
  text-align: center;
  color: white;
  padding: 6rem 2rem;
  overflow: hidden;
  font-family: "Poppins", sans-serif;
}

/* Titre */
.projets h2 {
  font-size: 2.5rem;
  letter-spacing: 2px;
  margin-bottom: 3rem;
  color: white;
  position: relative;
}

.project-card {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}


.h2_competences{
   font-size: 2.5rem;
  letter-spacing: 2px;
  margin-bottom: 1rem;
  color: white;
  position: relative;
  text-align: center;
}

.projets h2::after, .h2_competences::after{
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #00eaff, transparent);
  margin: 10px auto 0;
  border-radius: 3px;
}

/* Fond animé */
.projets::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, #060018, #0d053b, #002b44);
  background-size: 400% 400%;
  animation: bgShift 14s ease infinite;
  z-index: -2;
}

@keyframes bgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Particules */
#particles {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: -1;
  pointer-events: none;
}
.project-container {
  display: grid;
  grid-template-columns: 25% 25% 20%;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  padding: 2rem 0;
}

.project-card {
  flex: 1 1 calc(33.333% - 2rem);
  max-width: 300px;
  min-width: 250px;
  height: 260px;
  perspective: 1000px;
  margin-top: 20px;

  /* Animation d’apparition */
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

.project-card.visible {
  opacity: 1;
  transform: translateY(0);
}


/* Responsive tablette : 2 cartes par ligne */
@media (max-width: 1024px) {
  .project-card {
    flex: 1 1 calc(50% - 2rem);
  }

  .project-container{
    display: inline-flex;
  }
}

/* Responsive mobile : 1 carte par ligne */
@media (max-width: 768px) {
  .project-card {
    flex: 1 1 90%;
    margin: 0 auto;
  }
}



.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.9s cubic-bezier(.3,.8,.2,1);
  border-radius: 20px;
}

.project-card:hover .card-inner {
  transform: rotateY(180deg);
}

/* Faces */
.card-front, .card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 20px;
  overflow: hidden;
  backface-visibility: hidden;
  transition: box-shadow 0.4s ease, transform 0.3s ease;
}

/* Recto */
.card-front {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  background: #fff;
}

.card-front img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid #eee;
  transition: transform 0.6s ease, filter 0.6s ease;
}

.card-front h3 {
  margin: 1rem 0;
  color: #0a1f44;
  font-weight: 600;
  text-align: center;
}

.project-card:hover .card-front {
  box-shadow: 0 15px 35px rgba(0, 191, 255, 0.25);
}

.project-card:hover .card-front img {
  transform: scale(1.05);
  filter: brightness(1);
}

/* Verso */
.card-back {
  background: linear-gradient(160deg, rgba(0,40,60,0.9), rgba(0,10,30,0.95));
  transform: rotateY(180deg);
  padding: 1.5rem;
  color: #b2f7ff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  line-height: 1.5;
}

.card-back h4 {
  color: #00eaff;
  margin-bottom: 0.5rem;
  font-weight: 600;
  text-shadow: 0 0 6px #00eaff;
}

.project-card:hover .card-back {
  box-shadow: 0 15px 35px rgba(0,191,255,0.25);
}

/* Responsive : 2 cartes par ligne sur tablette */
@media (max-width: 1024px) {
  .project-card {
    flex: 1 1 calc(50% - 2.5rem);
  }
}

/* Responsive : 1 carte par ligne sur mobile */
@media (max-width: 700px) {
  .project-card {
    flex: 1 1 90%;
    margin: 0 auto;
  }
}




.a-propos {
  position: relative;
  padding: 6rem 2rem;
  background: #ffffff; /* fond blanc */
  color: #001f3f; /* texte foncé */
  font-family: "Poppins", sans-serif;
}

.apropos-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
  flex-wrap: wrap;
}

/* Photo */
.apropos-photo img {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #00bfff;
  object-position: top;
  opacity: 1 !important; /* force visibilité immédiate */
  transform: none !important;
}


.apropos-photo img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(0,191,255,0.5);
}

.apropos-photo {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease-out;
}

.apropos-photo.visible {
  opacity: 1;
  transform: translateY(0);
}


/* Texte */
.apropos-text {
  max-width: 600px;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease-out;
}

.apropos-text.visible {
  opacity: 1;
  transform: translateY(0);
}


.apropos-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #00bfff; /* cyan clair */
}

.apropos-text p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
  color: #001f3f; /* bleu foncé */
}

.apropos-text .btn {
  padding: 0.8rem 2rem;
  background: #00bfff;
  color: #ffffff;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s ease, transform 0.3s ease;
}

.apropos-text .btn:hover {
  background: #0099cc;
  transform: scale(1.05);
}

/* Animation texte */
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .apropos-container {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .apropos-photo img {
    width: 250px;
    height: 250px;
  }
}


.services {
  padding: 6rem 2rem;
  text-align: center;
  font-family: "Poppins", sans-serif;
  background: #f0f8ff; /* fond très clair */
}

.services h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: #0077cc;
  position: relative;
}

.services h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #00bfff, transparent);
  margin: 10px auto 0;
  border-radius: 3px;
}

.services-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

/* Cartes simples */
.service-card {
  background: #ffffff; /* blanc pur */
  border-radius: 20px;
  padding: 2rem 1.5rem;
  width: 280px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(40px);
}

.service-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.15);
}

.service-card img {
  width: 80px;
  height: 80px;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1.3rem;
  color: #0077cc;
  margin-bottom: 1rem;
}

.service-card p {
  font-size: 0.95rem;
  color: #001f3f;
  line-height: 1.5;
}

/* Responsive */
@media (max-width: 768px) {
  .services-container {
    flex-direction: column;
    align-items: center;
  }
}


.service-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 2rem 1.5rem;
  width: 280px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transform: translateY(40px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
}

/* animation visible avec délai via JS */
.service-card.visible {
  opacity: 1;
  transform: translateY(0);
}


.contact {
  padding: 6rem 2rem;
  background: linear-gradient(135deg, #f0f8ff, #e0f2ff);
  font-family: "Poppins", sans-serif;
}

.contact-container {
  display: flex;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  gap: 4rem;
  flex-wrap: wrap;
}

/* Formulaire */
/*.contact-form {
  flex: 1 1 400px;
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.08);
  animation: fadeSlide 1s ease forwards;
}*/

.wpcf7{
  flex: 1 1 400px;
  background: #ffffff;
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.08);
  animation: fadeSlide 1s ease forwards;
}

.contact-form h2 {
  margin-bottom: 1.5rem;
  color: #0077cc;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
  border: 2px solid #ddd;
  border-radius: 12px;
  font-size: 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: #00bfff;
  box-shadow: 0 0 8px rgba(0,191,255,0.4);
  outline: none;
}

.contact-form button {
  background: #00bfff;
  color: #fff;
  border: none;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.contact-form button:hover {
  background: #0099cc;
  transform: scale(1.05);
}



.contact-form_button {
  background: #00bfff;
  color: #fff;
  border: none;
  padding: 0.9rem 2rem;
  border-radius: 30px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.3s ease;
}

.contact-form_button:hover {
  background: #0099cc;
  transform: scale(1.05);
}


/* Infos contact */
.contact-info {
  flex: 1 1 300px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-info h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #0077cc;
}

.contact-info p {
  margin-bottom: 0.8rem;
  font-size: 1rem;
  color: #001f3f;
}

/* === Animation section contact (effet pop néon) === */
#contact {
  opacity: 0;
  transform: translateY(100px);
  filter: blur(12px);
  transition: all 1s cubic-bezier(0.2, 0.8, 0.3, 1);
}

#contact.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}



/* Animation fadeSlide */
@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .contact-container {
    flex-direction: column;
    gap: 2rem;
  }
}


/* HEADER MODERNE */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background: #ffffff; /* blanc épuré */
  color: #001f3f;      /* bleu foncé pour le texte */
  z-index: 1000;
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
  font-family: "Poppins", sans-serif;
  padding: 0rem 4rem;
  transition: background 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}

header img{
  height: 130px;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: #001f3f;
}

.logo span {
  color: #00bfff; /* accent cyan clair */
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links li {
  position: relative;
}

.nav-links li a {
  color: #001f3f;
  text-decoration: none;
  font-weight: 500;
  padding: 5px 0;
  transition: color 0.3s ease;
}

/* Barre animée */
.nav-links li a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px; /* épaisseur de la barre */
  background: #00bfff; /* couleur de la barre */
  transition: width 0.3s ease;
}

.nav-links li a:hover::after {
  width: 100%; /* barre qui s'étend sur tout le lien */
}

.nav-links li a:hover {
  color: #00bfff; /* texte accentué au hover */
}

/* ------------------------------- */
/* ====== BOUTON BURGER ====== */
/* ------------------------------- */
.burger {
  width: 35px;
  height: 25px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  z-index: 3000; /* Toujours au-dessus */
  display: none;
}

.burger span {
  display: block;
  height: 4px;
  width: 100%;
  background: #012953;
  border-radius: 4px;
  transition: 0.4s ease;
  transform-origin: center;
}

/* Animation burger → croix */
.burger.active span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* ------------------------------- */
/* ====== MENU DESKTOP ====== */
/* ------------------------------- */
.nav-links {
  display: flex;
  gap: 25px;
  position: static;
  height: auto;
  background: none;
  padding: 0;
  right: 0;
}

.nav-links a {
  color: cyan;
  text-decoration: none;
  font-size: 1.1rem;
  transition: 0.3s ease;
}

.nav-links a:hover {
  opacity: 0.7;
}

/* ------------------------------- */
/* ====== MENU MOBILE ====== */
/* ------------------------------- */
/* Assurer que le html et body prennent toute la hauteur */
html, body {
  height: 100%;
  margin: 0;
}

/* Menu mobile fixe full-height */
@media (max-width: 900px) {

  header{
    padding: 0px;
  }

  /* Burger toggle */
  #menu-toggle {
    display: flex;
    z-index: 3000; /* au-dessus du menu */
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;            /* côté droit */
    width: 250px;        /* largeur fixe */
    height: 100%;        /* toute la hauteur */
    min-height: 100vh;   /* garantit full height */
    background: #f0f8ff;
    flex-direction: column;
    padding-top: 120px;
    padding-left: 20px;
    gap: 25px;
    transition: transform 0.4s ease;
    transform: translateX(100%); /* hors écran à droite */
    z-index: 2500;
    border-radius: 30px 0px 0px 0px;
    padding-right: 7%;
  }

  /* Menu actif */
  .nav-links.active {
    transform: translateX(0);
  }

  /* Liens */
  .nav-links a {
    color: cyan;
    font-size: 1.2rem;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
  }

  .nav-links.active a {
    opacity: 1;
    transform: translateX(0);
    font-weight: 700;
    color: black;
  }
}



footer {
  background: #001f3f;
  color: #00eaff;
  padding: 2rem;
  font-family: "Poppins", sans-serif;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.footer-right a {
  margin-left: 1rem;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.footer-right a:hover {
  transform: scale(1.2);
  opacity: 0.8;
}

/* Responsive */
@media (max-width: 768px) {
  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: 1rem;
  }

  .footer-right a {
    margin-left: 0.5rem;
    margin-right: 0.5rem;
  }
}

#site-content {
  opacity: 0;
  transition: opacity 1s ease;
}
#preloader {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
#preloader-canvas {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}
.preloader-text {
  color: #0ff;
  font-family: "Courier New", monospace;
  font-size: 2rem;
  z-index: 10;
  margin-bottom: 20px;
}

.competences {
  position: relative;
  padding: 60px 20px;
  background: #0a0a0a;
  color: #fff;
  overflow: hidden;
}

#skills-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.skills-container {
  position: relative;
  z-index: 1;
  max-width: 900px;
  margin: auto;
  display: flex;
  flex-direction: column;
  gap: 25px;
}

.skill {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-label {
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-percent {
  font-weight: 700;
  color: #fff;
}

.skill-bar {
  background: rgba(255, 255, 255, 0.05);
  height: 25px;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
}

.skill-fill {
  height: 100%;
  width: 0;
  border-radius: 12px;
  background: linear-gradient(90deg, #0fff, #fff);
  box-shadow: 0 0 15px #0ff, 0 0 20px #00eaff inset;
  position: relative;
}

.skill-fill.animated {
  animation: gradientMove 3s linear infinite, pulse 1.5s ease-in-out infinite;
}

@keyframes gradientMove {
  0% { background-position: 0% 0%; }
  100% { background-position: 200% 0%; }
}

@keyframes pulse {
  0%, 100% { transform: scaleY(1); }
  50% { transform: scaleY(1.05); }
}

.particle {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #0ff;
  pointer-events: none;
  opacity: 0.8;
  box-shadow: 0 0 6px #0ff, 0 0 10px #00eaff;
}



/* SECTION CERTIFICATIONS */
#certifications {
  background: #f8fbff;
  padding: 6rem 2rem;
  text-align: center;
  font-family: "Poppins", sans-serif;
  overflow: hidden;
}

#certifications h2 {
  font-size: 2.5rem;
  color: #0077cc;
  margin-bottom: 3rem;
  position: relative;
}

#certifications h2::after {
  content: "";
  display: block;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, #00bfff, transparent);
  margin: 10px auto 0;
  border-radius: 3px;
}

/* Container */
.certif-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

/* Carte */
.certif-card {
  width: 280px;
  height: 340px;
  perspective: 1000px;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.certif-card.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Inner */
.certif-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.9s cubic-bezier(.3,.8,.2,1);
  border-radius: 20px;
}

.certif-card:hover .certif-inner {
  transform: rotateY(180deg);
}

/* Faces */
.certif-front, .certif-back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 20px;
  backface-visibility: hidden;
  overflow: hidden;
  background: white;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transition: box-shadow 0.3s ease;
}

/* Face avant */
.certif-front {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.certif-front img {
  width: 100px;
  height: auto;
  margin-bottom: 1rem;
  transition: transform 0.6s ease;
}

.certif-front h3 {
  font-size: 1.2rem;
  color: #001f3f;
  font-weight: 600;
  margin-top: 0.5rem;
}

.certif-card:hover .certif-front img {
  transform: scale(1.1);
}

/* Face arrière */
.certif-back {
  background: linear-gradient(160deg, #0077cc, #001f3f);
  color: #e0f8ff;
  transform: rotateY(180deg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.6;
  text-align: center;
}

.certif-back span {
  margin-top: 1rem;
  color: #00eaff;
  font-weight: 600;
}

/* Animation globale */
.certif-card:hover .certif-inner {
  box-shadow: 0 20px 45px rgba(0,191,255,0.2);
}

/* Responsive */
@media (max-width: 768px) {
  .certif-container {
    flex-direction: column;
    align-items: center;
  }
}


/* FOND ÉTOILÉ COMPÉTENCES */
#competences {
  position: relative;
  background: linear-gradient(120deg, #060018, #0d053b, #002b44);
  background-size: 400% 400%;
  animation: bgShift 14s ease infinite;
  color: white;
  overflow: hidden;
}

#skills-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.skills-container {
  position: relative;
  z-index: 2;
}

@keyframes bgShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}


.skills-grid {
  display: flex;
  flex-wrap: wrap;       /* permet d’aller à la ligne si trop de blocs */
  justify-content: center; /* centre les blocs sur la ligne */
  gap: 5%;             /* espace entre les blocs */
}

.skill-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 140px;          /* largeur fixe pour chaque bloc */
  padding: 1rem;
  background:white;
  border-radius: 15px;
  transition: transform 0.3s ease;
  margin-top: 5%;
}

.skill-card img {
  width: 64px;
  height: 64px;
  margin-bottom: 0.5rem;
}

.skill-card span {
  font-weight: 600;
  text-align: center;
  color: black;
}

.skill-card:hover {
  transform: translateY(-5px) scale(1.05);
  background: white;
  box-shadow: 0px 0px 8px white;
}


/* Animation pour apparition depuis la droite */
@keyframes slideInRight {
  0% {
    opacity: 0;
    transform: translateX(50px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animation pour apparition depuis la gauche */
@keyframes slideInLeft {
  0% {
    opacity: 0;
    transform: translateX(-50px);
  }
  100% {
    opacity: 1;
    transform: translateX(0);
  }
}

.skill-card {
  opacity: 0; /* initialement invisible */
}

.skill-card.animate-right {
  animation: slideInRight 0.6s forwards;
}

.skill-card.animate-left {
  animation: slideInLeft 0.6s forwards;
}


/* BOUTON BURGER */
.burger {
  width: 35px;
  height: 25px;
  display: none; /* visible seulement mobile */
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  z-index: 3000;
}

.burger span {
  display: block;
  height: 4px;
  width: 100%;
  background: #012953;
  border-radius: 4px;
  transition: 0.4s ease;
  transform-origin: center;
}

/* Burger -> croix */
.burger.active span:nth-child(1) {
  transform: translateY(10px) rotate(45deg);
}

.burger.active span:nth-child(2) {
  opacity: 0;
}

.burger.active span:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg);
}

/* NAV MOBILE */
@media (max-width: 900px) {
  .burger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: 250px;
    height: 100vh;
    background: #f0f8ff;
    flex-direction: column;
    padding-top: 120px;
    padding-left: 20px;
    gap: 25px;
    transform: translateX(100%);
    transition: transform 0.4s ease;
    z-index: 2500;
    border-radius: 30px 0px 0px 0px;
  }

  .nav-links li{
    margin-top: 20%;
  }

  .nav-links.active {
    transform: translateX(0);
  }
}