:root{
  --primary:#1e88e5;
  --primary-hover:#1976d2;
  --danger:#d32f2f;
  --danger-hover:#c62828;
  --ok:#2e7d32;
  --bg:#0f172a;
  --bg-card:#111827;
  --bg-card-hover:#1e293b;
  --text:#e2e8f0;
  --text-muted:#94a3b8;
  --border:#334155;
  --shadow:0 4px 6px -1px rgba(0,0,0,0.3),0 2px 4px -1px rgba(0,0,0,0.2);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,0.4),0 4px 6px -2px rgba(0,0,0,0.3);
  --radius:12px;
  --radius-sm:8px;
  --transition:all 0.2s ease;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  margin:0;
  padding:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;
  font-size:16px;
  line-height:1.6;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
/* Header Navigation */
.site-header{
  background:var(--bg-card);
  border-bottom:1px solid var(--border);
  position:sticky;
  top:0;
  z-index:100;
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow);
}
.header-content{
  max-width:1200px;
  margin:0 auto;
  padding:12px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.header-title{
  font-size:1.25rem;
  font-weight:700;
  color:var(--text);
  text-decoration:none;
  display:flex;
  align-items:center;
  gap:8px;
}
.header-nav{
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap;
}
.header-nav a{
  color:var(--text);
  text-decoration:none;
  padding:8px 12px;
  border-radius:var(--radius-sm);
  transition:var(--transition);
  font-size:0.9rem;
  white-space:nowrap;
}
.header-nav a:hover{
  background:var(--bg-card-hover);
}
.header-nav a.active{
  background:var(--primary);
  color:#fff;
}
/* Bouton retour */
.btn-back{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:transparent;
  color:var(--text);
  padding:8px 12px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  text-decoration:none;
  font-size:0.9rem;
  transition:var(--transition);
  cursor:pointer;
}
.btn-back:hover{
  background:var(--bg-card-hover);
  border-color:var(--primary);
}
.btn-back:active{
  transform:scale(0.98);
}
/* Main Content */
main{
  flex:1;
  width:100%;
}
.container{
  max-width:960px;
  margin:0 auto;
  padding:20px 16px;
  width:100%;
}
.page-header{
  margin-bottom:24px;
  display:flex;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
}
.page-header h1{
  font-size:1.75rem;
  font-weight:700;
  margin:0;
}
/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--primary);
  color:#fff;
  padding:12px 20px;
  border:none;
  border-radius:var(--radius-sm);
  text-decoration:none;
  cursor:pointer;
  font-size:1rem;
  font-weight:500;
  transition:var(--transition);
  box-shadow:var(--shadow);
  white-space:nowrap;
}
.btn:hover{
  background:var(--primary-hover);
  transform:translateY(-1px);
  box-shadow:var(--shadow-lg);
}
.btn:active{
  transform:translateY(0);
}
.btn:disabled{
  opacity:0.6;
  cursor:not-allowed;
  transform:none !important;
}
.btn-danger{
  background:var(--danger);
}
.btn-danger:hover{
  background:var(--danger-hover);
}
.btn-secondary{
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
}
.btn-secondary:hover{
  background:var(--bg-card-hover);
  border-color:var(--primary);
}
/* Cards */
.card{
  background:var(--bg-card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  margin:16px 0;
  box-shadow:var(--shadow);
  transition:var(--transition);
}
.card:hover{
  box-shadow:var(--shadow-lg);
}
/* Tables */
.table{
  width:100%;
  border-collapse:collapse;
  overflow-x:auto;
  display:block;
}
.table thead,.table tbody{
  display:block;
}
.table th,.table td{
  border-bottom:1px solid var(--border);
  padding:12px 10px;
  text-align:left;
  display:block;
}
.table th{
  font-weight:600;
  color:var(--text);
}
/* Responsive Table */
@media (min-width:640px){
  .table{display:table}
  .table thead,.table tbody{display:table-row-group}
  .table th,.table td{display:table-cell}
}
/* Form Elements */
.input{
  width:100%;
  padding:12px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--bg);
  color:var(--text);
  font-size:1rem;
  transition:var(--transition);
}
.input:focus{
  outline:none;
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(30,136,229,0.1);
}
.input::placeholder{
  color:var(--text-muted);
}
/* Layout */
.row{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.col{
  flex:1 1 280px;
  min-width:0;
}
/* Status */
.status-ok{
  color:var(--ok);
  font-weight:600;
}
.status-bad{
  color:var(--danger);
  font-weight:600;
}
/* Media */
video{
  width:100%;
  border-radius:var(--radius);
  border:1px solid var(--border);
}
/* Utilities */
.center{text-align:center}
.text-muted{color:var(--text-muted)}
.mt-1{margin-top:8px}
.mt-2{margin-top:16px}
.mt-3{margin-top:24px}
.mb-1{margin-bottom:8px}
.mb-2{margin-bottom:16px}
.mb-3{margin-bottom:24px}
/* Footer */
.site-footer{
  background:var(--bg-card);
  border-top:1px solid var(--border);
  padding:20px 16px;
  margin-top:auto;
  text-align:center;
  color:var(--text-muted);
  font-size:0.9rem;
}
/* Mobile Menu Toggle */
.mobile-menu-toggle{
  display:none;
  background:transparent;
  border:none;
  color:var(--text);
  font-size:1.5rem;
  cursor:pointer;
  padding:8px;
}
@media (max-width:768px){
  .mobile-menu-toggle{display:block}
  .header-content{
    position:relative;
  }
  .header-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    background:var(--bg-card);
    border-top:1px solid var(--border);
    flex-direction:column;
    padding:12px;
    gap:4px;
    display:none;
    box-shadow:var(--shadow-lg);
    z-index:200;
  }
  .header-nav.active{
    display:flex;
  }
  .header-nav a{
    width:100%;
    padding:12px;
  }
  .container{
    padding:16px 12px;
  }
  .page-header{
    flex-direction:column;
    align-items:flex-start;
    gap:12px;
  }
  .page-header h1{
    font-size:1.5rem;
  }
  .btn{
    width:100%;
    justify-content:center;
  }
  .row{
    flex-direction:column;
  }
  .col{
    flex:1 1 100%;
  }
}
@media (max-width:480px){
  .container{
    padding:12px 8px;
  }
  .card{
    padding:16px;
  }
  .page-header h1{
    font-size:1.25rem;
  }
  .header-title{
    font-size:1rem;
  }
}
/* Loading States */
.loading{
  opacity:0.6;
  pointer-events:none;
}
/* Animations */
@keyframes fadeIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-in{
  animation:fadeIn 0.3s ease;
}