:root {
  --bg-body: #F0F5F9;
  --bg-card: #FFFFFF;
  --bg-nav: rgba(240, 245, 249, 0.90);
  --text-main: #181818;
  --text-secondary: #546e7a;
  --accent-color: #00bcd4;
  --border-color: #cfd8dc;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
  --nav-height: 70px;
  --border-radius: 12px;
  --container-width: 1100px;
}

body.dark-mode {
  --bg-body: #050505;
  --bg-card: #121212;
  --bg-nav: rgba(5, 5, 5, 0.90);
  --text-main: #ffffff;
  --text-secondary: #b0bec5;
  --accent-color: #cfd8dc; 
  --border-color: #333333;
  --shadow: 0 10px 40px -10px rgba(255, 255, 255, 0.1); 
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 20px);
}

body {
  font-family: 'Roboto', Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  margin: 0;
  padding-top: var(--nav-height);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  line-height: 1.6;
}

ul { list-style: none; padding: 0; margin: 0; }
a { text-decoration: none; color: inherit; transition: 0.2s; }
button { font-family: inherit; }

nav {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--nav-height);
  background-color: var(--bg-nav);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  backdrop-filter: blur(10px);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
}

#pseudo {
  font-family: 'Courier New', monospace;
  font-size: 1.4rem;
  color: var(--accent-color);
  font-weight: bold;
  letter-spacing: -1px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--border-radius);
  color: var(--text-main);
}

.nav-links a:hover {
  color: var(--accent-color);
  background-color: rgba(128, 128, 128, 0.05);
}

#theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  cursor: pointer;
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.3s;
  margin-left: 15px;
}

#theme-toggle:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: rotate(15deg);
  background-color: rgba(128, 128, 128, 0.05);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 5px;
}

#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--accent-color);
  z-index: 1001;
  box-shadow: 0 0 10px var(--accent-color);
  transition: width 0.1s;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

header {
  min-height: 85vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

header h1 {
  font-size: clamp(3.5rem, 13vw, 9rem); 
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  margin: 0 0 20px 0;
  color: var(--text-main);
}

header .subtitle {
  font-size: clamp(1.1rem, 4vw, 1.8rem);
  color: var(--text-secondary);
  font-weight: 300;
  margin: 0;
  max-width: 800px;
}
.highlight {
  color: var(--accent-color);
  font-weight: 600;
  text-shadow: 0 0 20px rgba(var(--accent-color), 0.3);
}

section {
  padding: 100px 0;
}

h2 {
  font-size: 2rem;
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  color: var(--text-main);
}

h2::before {
  content: '';
  display: block;
  width: 6px;
  height: 30px;
  background-color: var(--accent-color);
  margin-right: 15px;
  border-radius: 3px;
  box-shadow: 0 0 10px var(--accent-color);
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 30px;
  box-shadow: var(--shadow);
  font-size: 1.1rem;
}

.skills-list, .certif-list{
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.skills-list li, .certif-list li {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 500;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: default;
}

.skills-list li:hover, .certif-list li:hover{
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
}

.exp-slider {
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 20px 5px;
  scrollbar-width: none;
  width: 100%;
}
.exp-slider::-webkit-scrollbar { display: none; }

.exp-grid {
  display: flex;
  gap: 25px;
}

.projet-card {
  flex: 0 0 320px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 25px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: transform 0.3s, border-color 0.3s;
}

.projet-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-color);
}

.projet-card h3 {
  margin: 0 0 5px 0;
  color: var(--accent-color);
  font-size: 1.4rem;
}

.projet-card .date {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: monospace;
  margin-bottom: 15px;
}

.projet-card p {
  color: var(--text-main);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.projet-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.projet-card .tags span {
  font-size: 0.75rem;
  font-family: monospace;
  padding: 4px 8px;
  background: rgba(128, 128, 128, 0.1);
  color: var(--text-secondary);
  border-radius: 4px;
  border: 1px solid transparent;
}


.exp-arrow {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 45px; height: 45px;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  flex-shrink: 0;
}

.exp-arrow:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: rgba(128, 128, 128, 0.05);
}

.contacts-grid {
  display: flex;
  justify-content: center;
  gap: 30px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 30px;
  min-width: 160px;
  gap: 15px;
  transition: 0.3s;
}

.contact-card i, .contact-card svg {
  font-size: 2.5rem;
  color: var(--text-main);
  transition: 0.3s;
}

.contact-card span {
  font-weight: 500;
}

.contact-card:hover {
  border-color: var(--accent-color);
  transform: translateY(-5px);
}

.contact-card:hover i, .contact-card:hover svg {
  color: var(--accent-color);
  text-shadow: 0 0 15px var(--accent-color);
}

footer {
  margin-top: 50px;
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    right: -100%;
    width: 100%;
    height: calc(100vh - var(--nav-height));
    background-color: var(--bg-nav);
    backdrop-filter: blur(15px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    border-top: 1px solid var(--border-color);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.5rem;
    width: 100%;
    text-align: center;
    padding: 15px;
  }
  
  .exp-arrow {
    display: none;
  }
  
  .projet-card {
    flex: 0 0 85vw;
  }

  .contacts-grid {
    gap: 15px;
  }
  
  .contact-card {
    width: 100%;
    flex-direction: row;
    padding: 20px;
  }
  
  .contact-card i {
    font-size: 1.5rem;
  }
}