body { font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; background:#f7f7f7; color:#111; line-height:1.5; margin:0; padding:0; }
.container { width:90%; max-width:1200px; margin:2rem auto; }

/* Topbar */
.topbar { background:#111; color:#fff; padding:1rem 0; display:flex; align-items:center; justify-content:space-between; }
.topbar .brand { font-size:1.8rem; font-weight:600; }
.topbar nav a, .topbar nav span { color:#fff; margin-left:1rem; text-decoration:none; }
.topbar nav a.btn { background:#fff; color:#111; padding:0.4rem 0.8rem; border-radius:6px; transition:0.2s; }
.topbar nav a.btn:hover { background:#eee; }

/* Card sections */
.card { background:#fff; padding:1.5rem; margin-bottom:2rem; border-radius:12px; box-shadow:0 4px 10px rgba(0,0,0,0.05); }
.card h2 { margin-bottom:1rem; font-size:1.5rem; border-bottom:1px solid #eee; padding-bottom:0.3rem; }

/* Form styles */
form input, form select { width:100%; padding:0.5rem 0.7rem; margin-bottom:0.8rem; border-radius:6px; border:1px solid #ddd; transition:0.2s; }
form input:focus, form select:focus { border-color:#111; outline:none; }
button.btn { background:#111; color:#fff; border:none; padding:0.5rem 1rem; border-radius:8px; cursor:pointer; transition:0.2s; }
button.btn:hover { background:#333; }
button.small-btn { background:#555; color:#fff; padding:0.3rem 0.6rem; border-radius:6px; margin-left:0.3rem; text-decoration:none; }
button.small-btn:hover { background:#333; }

/* Tables */
.table-wrapper { overflow-x:auto; margin-top:1rem; }
table { width:100%; border-collapse:collapse; }
table th, table td { padding:0.7rem; border-bottom:1px solid #eee; text-align:left; }
table th { background:#f0f0f0; }

/* Flash messages */
.alert { padding:0.6rem 1rem; margin-bottom:1rem; border-radius:6px; }
.alert.success { background:#d4edda; color:#155724; }
.alert.error { background:#f8d7da; color:#721c24; }

/* Inline forms */
.inline-form { display:inline; margin:0; padding:0; }

/* Overlay modal */
.modal-overlay {
  position: fixed;
  top:0; left:0;
  width:100%; height:100%;
  background: rgba(0,0,0,0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

/* Modal box */
.modal {
  background:#fff;
  padding:1.5rem;
  border-radius:12px;
  width:90%;
  max-width:500px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  position: relative;
}

/* Close button */
.modal .close-btn {
  position:absolute;
  top:0.5rem;
  right:0.5rem;
  background:#e74c3c;
  color:#fff;
  border:none;
  border-radius:6px;
  padding:0.2rem 0.5rem;
  cursor:pointer;
}

/* Show modal */
.modal-overlay.active { display:flex; }

/* Classement */
.leaderboard {
  margin-top: 24px;
}

.table-container {
  overflow-x: auto;
}

.ranking-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.ranking-table th, .ranking-table td {
  padding: 12px 16px;
  text-align: left;
}

.ranking-table th {
  background: #2c3e50;
  color: #fff;
  font-weight: 600;
}

.ranking-table tbody tr:nth-child(even) {
  background: #f8f9fa;
}

/* Effet podium */
.ranking-table .rank-1 td {
  background: #fffbea;
  font-weight: bold;
}
.ranking-table .rank-2 td {
  background: #f0f4ff;
  font-weight: bold;
}
.ranking-table .rank-3 td {
  background: #fff5f0;
  font-weight: bold;
}

/* --- Topbar / Header --- */
.topbar {
  background: #000;
  color: #fff;
  height: 100px; /* Hauteur fixe */
  display: flex;
  justify-content: center; /* Centre horizontalement le logo */
  align-items: center;     /* Centre verticalement */
  position: relative;
  padding: 0 1rem;
  box-sizing: border-box;
}

.topbar .brand {
  display: flex;
  justify-content: center;
  align-items: center;
}

.topbar .brand img.logo {
  max-height: 80px; /* Taille du logo */
  width: auto;
  display: block;
  transition: transform 0.3s ease;
}

.topbar .brand img.logo:hover {
  transform: scale(1.05);
}

.topbar nav {
  position: absolute;
  right: 1rem;       /* Garder les boutons à droite */
  top: 50%;
  transform: translateY(-50%); /* Centre verticalement par rapport au header */
  display: flex;
  gap: 1rem;
  align-items: center;
}

.topbar nav a.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: #fff;
  color: #000;
  border-radius: 10px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.topbar nav a.btn:hover {
  background: #333;
  color: #fff;
}

/* --- Responsive --- */
@media(max-width: 600px) {
  .topbar {
    height: 80px;
  }
  .topbar .brand img.logo {
    max-height: 60px;
  }
  .topbar nav a.btn {
    padding: 0.4rem 0.8rem;
    font-size: 14px;
  }
}
.hero-image {
  display: flex;
  justify-content: center;
  margin: 2rem 0; /* espace vertical */
}