/* === Design System — Bureau de la Formation === */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #eef2ff;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #f59e0b;
  --warning-light: #fffbeb;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 25px rgba(0,0,0,.1);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { margin:0; padding:0; box-sizing:border-box; }
body { font-family:var(--font); background:#f1f5f9; color:var(--gray-800); line-height:1.6; min-height:100vh; }

/* Layout */
.app { display:flex; min-height:100vh; }
.sidebar { width:250px; background:var(--gray-900); color:#fff; padding:2rem 1.5rem; flex-shrink:0; display:flex; flex-direction:column; }
.sidebar-logo { font-size:1.25rem; font-weight:700; margin-bottom:2rem; letter-spacing:-.02em; }
.sidebar-logo span { color:var(--primary); }
.sidebar-nav { display:flex; flex-direction:column; gap:4px; flex:1; }
.sidebar-nav a { color:var(--gray-400); text-decoration:none; padding:.65rem 1rem; border-radius:8px; font-size:.9rem; font-weight:500; transition:all .15s; display:flex; align-items:center; gap:8px; }
.sidebar-nav a:hover, .sidebar-nav a.active { background:rgba(255,255,255,.08); color:#fff; }
.sidebar-nav a svg { width:18px; height:18px; opacity:.7; flex-shrink:0; }
.main { flex:1; display:flex; flex-direction:column; min-width:0; }
.header { background:#fff; border-bottom:1px solid var(--gray-200); padding:1rem 2rem; display:flex; align-items:center; justify-content:space-between; }
.header h1 { font-size:1.2rem; font-weight:600; }
.content { padding:2rem; flex:1; }

/* Cards */
.card { background:#fff; border-radius:var(--radius); box-shadow:var(--shadow); padding:1.5rem; margin-bottom:1.5rem; }
.card-header { font-size:1rem; font-weight:600; margin-bottom:1rem; color:var(--gray-800); display:flex; align-items:center; gap:8px; }

/* Stats grid */
.stats { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:1rem; margin-bottom:1.5rem; }
.stat-card { background:#fff; border-radius:var(--radius); box-shadow:var(--shadow); padding:1.25rem; text-align:center; }
.stat-value { font-size:2rem; font-weight:700; color:var(--primary); line-height:1; }
.stat-label { font-size:.8rem; color:var(--gray-500); margin-top:.35rem; }

/* Buttons */
.btn { display:inline-flex; align-items:center; justify-content:center; gap:6px; padding:.6rem 1.2rem; border-radius:var(--radius); font-size:.875rem; font-weight:600; border:none; cursor:pointer; text-decoration:none; transition:all .15s; white-space:nowrap; }
.btn-primary { background:var(--primary); color:#fff; }
.btn-primary:hover { background:var(--primary-hover); transform:translateY(-1px); box-shadow:var(--shadow-md); }
.btn-danger { background:var(--danger); color:#fff; }
.btn-danger:hover { background:var(--danger-hover); }
.btn-outline { background:transparent; border:1.5px solid var(--gray-300); color:var(--gray-700); }
.btn-outline:hover { background:var(--gray-50); border-color:var(--gray-400); }
.btn-sm { padding:.4rem .8rem; font-size:.8rem; }
.btn-lg { padding:.75rem 1.5rem; font-size:1rem; }
.btn:disabled { opacity:.5; cursor:not-allowed; transform:none; box-shadow:none; }

/* Tables */
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; font-size:.875rem; }
th { text-align:left; font-weight:600; color:var(--gray-500); font-size:.75rem; text-transform:uppercase; letter-spacing:.04em; padding:.75rem 1rem; border-bottom:2px solid var(--gray-200); background:var(--gray-50); }
td { padding:.65rem 1rem; border-bottom:1px solid var(--gray-100); }
tr:hover td { background:var(--gray-50); }

/* Badges */
.badge { display:inline-flex; align-items:center; padding:.15rem .55rem; border-radius:20px; font-size:.72rem; font-weight:600; }
.badge-success { background:var(--success-light); color:var(--success); }
.badge-warning { background:var(--warning-light); color:var(--warning); }
.badge-gray { background:var(--gray-100); color:var(--gray-600); }
.badge-primary { background:var(--primary-light); color:var(--primary); }

/* Forms */
.form-group { margin-bottom:1rem; }
.form-label { display:block; font-size:.8rem; font-weight:600; color:var(--gray-600); margin-bottom:.3rem; }
.form-input, .form-select { width:100%; padding:.55rem .75rem; border:1.5px solid var(--gray-300); border-radius:8px; font-size:.875rem; font-family:var(--font); transition:border-color .15s; background:#fff; }
.form-input:focus, .form-select:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(79,70,229,.1); }
.form-row { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1rem; }
.form-check { display:flex; align-items:center; gap:.5rem; font-size:.85rem; color:var(--gray-700); }
.form-check input[type=checkbox] { width:16px; height:16px; accent-color:var(--primary); }

/* Alerts */
.alert { padding:.85rem 1rem; border-radius:var(--radius); font-size:.85rem; margin-bottom:1rem; }
.alert-info { background:#eff6ff; color:#1e40af; border:1px solid #bfdbfe; }
.alert-error { background:#fef2f2; color:#991b1b; border:1px solid #fecaca; }
.alert-success { background:var(--success-light); color:var(--success); border:1px solid #bbf7d0; }

/* Login page */
.login-page { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg,#312e81,#4338ca,#6366f1); padding:1rem; }
.login-card { background:#fff; border-radius:16px; box-shadow:var(--shadow-lg); padding:2.5rem; width:100%; max-width:400px; }
.login-card h1 { font-size:1.4rem; font-weight:700; margin-bottom:.25rem; text-align:center; }
.login-card p { color:var(--gray-500); font-size:.85rem; text-align:center; margin-bottom:1.5rem; }

/* Barre progression */
.progress-bar { width:100%; height:8px; background:var(--gray-200); border-radius:4px; overflow:hidden; margin:1rem 0; }
.progress-fill { height:100%; background:var(--primary); border-radius:4px; transition:width .3s; }

/* Responsive */
@media (max-width:768px) {
  .app { flex-direction:column; }
  .sidebar { width:100%; padding:1rem; flex-direction:row; align-items:center; }
  .sidebar-nav { flex-direction:row; flex-wrap:wrap; }
  .content { padding:1rem; }
  .header { padding:1rem; }
  .stats { grid-template-columns:1fr 1fr; }
  table { font-size:.75rem; }
  th, td { padding:.4rem .5rem; }
}

/* Utils */
.mt-2 { margin-top:.5rem; }
.mb-2 { margin-bottom:.5rem; }
.mr-2 { margin-right:.5rem; }
.text-right { text-align:right; }
.text-center { text-align:center; }
.text-muted { color:var(--gray-500); font-size:.8rem; }
.flex-between { display:flex; justify-content:space-between; align-items:center; }
.gap-2 { gap:.5rem; }
.w-full { width:100%; }