/* Configuration générale */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

:root {
  --background: #0b1120;
  --card: #151f32;
  --text: #f1f5f9;
  --secondary: #aab7cc;
  --primary: #38bdf8;
  --border: #26364d;
}

body {
  font-family: Arial, sans-serif;
  background: var(--background);
  color: var(--text);
  line-height: 1.7;
  transition: 0.3s;
}

a {
  color: var(--primary);
  text-decoration: none;
}

h1,
h2,
h3 {
  line-height: 1.3;
}

h2 {
  font-size: 32px;
  margin-bottom: 20px;
}

p {
  color: var(--secondary);
}

/* Barre de navigation */
header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  max-width: 1100px;
  margin: auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

nav h1 {
  font-size: 28px;
}

nav h1 span,
#accueil h2 span {
  color: var(--primary);
}

nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
  flex-wrap: wrap;
}

nav ul a {
  color: var(--text);
  font-size: 14px;
  transition: 0.3s;
}

nav ul a:hover {
  color: var(--primary);
}

/* Bouton du thème */
button {
  background: var(--primary);
  color: #08111f;
  border: none;
  padding: 10px 15px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}

button:hover {
  opacity: 0.8;
  transform: translateY(-2px);
}

/* Sections */
section {
  max-width: 1100px;
  margin: auto;
  padding: 85px 24px;
  scroll-margin-top: 85px;
}

section > p {
  max-width: 750px;
}

/* Accueil */
#accueil {
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

#accueil h2 {
  font-size: clamp(32px, 5vw, 52px);
  margin-bottom: 12px;
}

#accueil h3 {
  color: var(--primary);
  font-size: 23px;
  margin-bottom: 15px;
}

#accueil p {
  max-width: 650px;
  margin-bottom: 25px;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: #08111f;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: bold;
  transition: 0.3s;
}

.btn:hover {
  transform: translateY(-3px);
}

/* À propos */
#apropos {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* Compétences */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 25px;
}

.skill {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 10px;
  color: var(--primary);
  transition: 0.3s;
}

.skill:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}

/* Projets */
.projects-container {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 30px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 25px;
  transition: 0.3s;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.project-card h3 {
  font-size: 21px;
  margin-bottom: 14px;
}

.project-card p {
  margin-bottom: 15px;
}

.project-card span {
  display: inline-block;
  background: rgba(56, 189, 248, 0.12);
  color: var(--primary);
  padding: 4px 9px;
  border-radius: 5px;
  font-size: 12px;
  margin: 3px 3px 10px 0;
}

/* Contact */
#contact {
  border-top: 1px solid var(--border);
}

#contact a {
  overflow-wrap: anywhere;
}

/* Pied de page */
footer {
  text-align: center;
  padding: 25px;
  background: var(--card);
  border-top: 1px solid var(--border);
}

/* Mode clair */
body.light {
  --background: #f1f5f9;
  --card: #ffffff;
  --text: #172033;
  --secondary: #526077;
  --primary: #0284c7;
  --border: #d7e0eb;
}

/* Téléphones et petites tablettes */
@media (max-width: 800px) {
  .projects-container {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  nav {
    justify-content: center;
  }

  nav ul {
    justify-content: center;
  }

  section {
    padding: 60px 20px;
  }
}

@media (max-width: 550px) {
  .projects-container {
    grid-template-columns: 1fr;
  }

  nav {
    flex-direction: column;
  }

  nav ul {
    gap: 12px;
  }

  nav ul a {
    font-size: 13px;
  }

  #accueil {
    min-height: 430px;
  }

  h2 {
    font-size: 27px;
  }
}