:root{
    --bg:#0b1220;
    --card:#121b2e;
    --text:#e8eefc;
    --muted:#a9b4d0;
    --primary:#4f7cff;
    --border: rgba(255,255,255,0.10);
    --max: 960px;
  }
  
  *{ box-sizing:border-box; }
  
  body{
    margin:0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
  }
  
  .container{
    max-width: var(--max);
    margin: 0 auto;
    padding: 16px;
  }
  
  .header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap: 16px;
    padding-top: 18px;
    padding-bottom: 18px;
  }
  
  .logo{
    font-weight: 750;
    letter-spacing: 0.2px;
  }
  
  .nav a{
    color: var(--muted);
    margin-left: 14px;
    text-decoration: none;
  }
  .nav a:hover{ color: var(--text); }
  
  a{ color: inherit; }
  
  .hero{
    padding: 24px 0 12px;
  }
  
  .muted{ color: var(--muted); }
  
  .actions{
    display:flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 14px;
  }
  
  .btn{
    display:inline-block;
    background: var(--primary);
    color: white;
    text-decoration:none;
    padding: 10px 14px;
    border-radius: 12px;
    font-weight: 600;
  }
  
  .btn-secondary{
    background: transparent;
    border: 1px solid var(--border);
  }
  
  .card{
    background: var(--card);
    border: 1px solid var(--border);
    padding: 16px;
    border-radius: 14px;
    margin-top: 14px;
  }
  
  .footer{
    padding-top: 22px;
    padding-bottom: 28px;
  }
  .grid{
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 14px;
  }
  
  @media (max-width: 820px){
    .grid{ grid-template-columns: 1fr; }
  }
  
  .form{
    margin-top: 12px;
  }
  
  .field{
    display: grid;
    gap: 6px;
    margin-top: 10px;
  }
  
  label{
    color: var(--muted);
    font-weight: 600;
    font-size: 0.95rem;
  }
  
  input, select{
    width: 100%;
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.04);
    color: var(--text);
    outline: none;
  }
  
  input:focus, select:focus{
    border-color: rgba(79,124,255,0.8);
  }
  
  .sep{
    border: none;
    border-top: 1px solid var(--border);
    margin: 14px 0;
  }
  
  .results{
    display: grid;
    gap: 10px;
    margin-top: 12px;
  }
  
  .result{
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255,255,255,0.03);
  }
  
  button.btn{
    border: none;
    cursor: not-allowed;
    opacity: 0.75;
  }
  .nav a[aria-current="page"]{
    color: var(--text);
    font-weight: 700;
  }

  .table{
    width:100%;
    border-collapse: collapse;
    min-width: 980px;
  }
  .table th, .table td{
    border-bottom: 1px solid var(--border);
    padding: 10px;
    text-align: left;
    vertical-align: top;
  }
  .table th{ color: var(--muted); font-weight:700; }
  
  .grid-2{
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  @media (max-width: 820px){
    .grid-2{ grid-template-columns: 1fr; }
  }

/* --- MODAL STYLES --- */
.modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.7); /* Fond noir transparent */
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px); /* Petit effet flou moderne */
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background: var(--card); /* Utilise ta couleur de carte */
  padding: 24px;
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
  animation: slideIn 0.3s ease-out;
}

.modal-content h3 {
  margin-top: 0;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

@keyframes slideIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}