/* Base styling resets and variables */
:root {
  --primary: #1e88e5; /* deep blue reminiscent of clean energy */
  --secondary: #00796b; /* teal accent for eco‑friendly vibes */
  --light-bg: #fafafa;
  --dark-text: #202124;
  --muted-text: #5f6368;
  --section-padding: 4rem;
}

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

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: var(--dark-text);
  background-color: var(--light-bg);
  scroll-behavior: smooth;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s ease;
}
a:hover {
  color: var(--secondary);
}

/* Navbar */
.navbar {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background-color: white;
  box-shadow: 0 2px 4px rgba(0,0,0,0.08);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
}
.logo {
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--primary);
  gap: 0.5rem;
}

/* Logo image */
/* Photo de profil utilisée dans l'en‑tête comme logo */
.profile-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}

/* Petit logo écologique qui accompagne le nom dans l'en‑tête */
.eco-logo {
  width: 28px;
  height: 28px;
  margin-left: 0.5rem;
  object-fit: contain;
}

/* Profile photo style */
.profile-photo {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  margin: 0 auto 1rem auto;
}
.nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}
.nav-links li a {
  font-weight: 500;
  color: var(--dark-text);
  position: relative;
}
.nav-links li a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s ease;
}
.nav-links li a:hover::after {
  width: 100%;
}
/* Hamburger menu for mobile */
#menu-toggle {
  display: none;
}
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}
.hamburger span {
  height: 3px;
  width: 25px;
  background-color: var(--dark-text);
  border-radius: 3px;
}

/* Hero section */
.hero {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 80vh;
  padding-top: 5rem;
  position: relative;
  overflow: hidden;
}
.hero-text {
  text-align: center;
  z-index: 10;
  max-width: 600px;
}
.hero-text h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  color: var(--primary);
}
.hero-text .tagline {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--muted-text);
}
.cta {
  display: inline-block;
  background-color: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-weight: 500;
  transition: background-color 0.3s ease;
}
.cta:hover {
  background-color: var(--secondary);
}

/* 3D canvas container (fills remaining space) */
#canvas-container {
  display: none;
}

/* CSS‑based 3D panel in hero */
#panel3d {
  position: absolute;
  top: 40%;
  right: 8%;
  transform: translate(50%, -50%);
  width: 220px;
  height: 140px;
  perspective: 800px;
  z-index: 1;
}
#panel3d .panel {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  animation: rotatePanel 18s linear infinite;
}
#panel3d .face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 6px;
}
#panel3d .front {
  background: linear-gradient(135deg, #42a5f5, #1e88e5);
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}
#panel3d .back {
  background: #455a64;
  transform: rotateY(180deg);
  box-shadow: 0 0 15px rgba(0,0,0,0.2);
}

@keyframes rotatePanel {
  from {
    transform: rotateY(0deg) rotateX(12deg);
  }
  to {
    transform: rotateY(360deg) rotateX(12deg);
  }
}

/* Main sections */
.section {
  padding: var(--section-padding) 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}
.section h2 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
  color: var(--primary);
  text-align: center;
}
.section h3 {
  font-size: 1.4rem;
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  color: var(--secondary);
}

/* Timeline */
.timeline {
  margin-top: 1rem;
  border-left: 3px solid var(--primary);
  position: relative;
  padding-left: 1.5rem;
}
.timeline-item {
  margin-bottom: 1.5rem;
  position: relative;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.65rem;
  top: 0.2rem;
  width: 0.8rem;
  height: 0.8rem;
  background-color: var(--primary);
  border-radius: 50%;
}
.timeline-date {
  font-size: 0.85rem;
  color: var(--muted-text);
}
.timeline-item h4 {
  margin: 0.3rem 0 0.5rem;
  font-size: 1.1rem;
  color: var(--dark-text);
}
.timeline-item p {
  font-size: 0.95rem;
  color: var(--muted-text);
  line-height: 1.4;
}

/* Education and lists */
.education-list,
.skills-list,
.cert-list {
  list-style-type: disc;
  padding-left: 1.2rem;
  color: var(--muted-text);
  margin-top: 0.5rem;
}
.education-list li,
.skills-list li,
.cert-list li {
  margin-bottom: 0.4rem;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}
.project-card {
  background-color: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.07);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  color: inherit;
}
.project-card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.25rem;
  color: var(--secondary);
}
.project-card p {
  font-size: 0.95rem;
  color: var(--muted-text);
  line-height: 1.45;
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.12);
}

/* Contact */
.contact-info {
  font-size: 1.1rem;
  color: var(--dark-text);
  margin-top: 1rem;
}
.contact-info i {
  margin-right: 0.5rem;
  color: var(--secondary);
}

/* Footer */
footer {
  text-align: center;
  padding: 2rem 1rem;
  background-color: white;
  margin-top: 4rem;
  color: var(--muted-text);
  font-size: 0.9rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    right: 0;
    width: 60%;
    height: calc(100% - 70px);
    background-color: white;
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    gap: 1rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    font-size: 1.1rem;
  }
  #menu-toggle:checked + .hamburger + .nav-links {
    transform: translateX(0);
  }
  .hamburger {
    display: flex;
  }

  /* Masquer le panneau 3D sur mobile pour garder la lisibilité */
  #panel3d {
    display: none;
  }
}