:root{--primary: #4f46e5;--primary-dark: #4338ca;--bg: #f1f5f9;--surface: #ffffff;--text: #1e293b;--muted: #64748b;--border: #e2e8f0;--error: #dc2626;--success: #16a34a;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--surface);border-right:1px solid var(--border);padding:20px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.brand{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:24px}.nav-links{display:flex;flex-direction:column;gap:4px;flex:1}.nav-links a{padding:10px 12px;border-radius:8px;color:var(--text);font-weight:500}.nav-links a:hover{background:var(--bg);text-decoration:none}.nav-links a.active{background:var(--primary);color:#fff}.sidebar-footer{border-top:1px solid var(--border);padding-top:16px}.user-info{margin-bottom:12px}.user-info strong{display:block}.user-info span{color:var(--muted);font-size:13px}.content{flex:1;padding:32px 40px;max-width:1100px}h1{font-size:26px;margin-bottom:20px}h2{font-size:18px;margin-bottom:12px}h3{font-size:15px;margin-bottom:6px}.muted{color:var(--muted);font-size:14px}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card.stat{text-align:center}.stat-label{display:block;color:var(--muted);font-size:13px}.stat-value{display:block;font-size:28px;font-weight:700;color:var(--primary)}.action-card{display:block;transition:transform .15s,box-shadow .15s}.action-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00000014;text-decoration:none}.action-card p{color:var(--muted);font-size:14px}.section{margin-bottom:32px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;gap:12px}.section-header h1,.section-header h2{margin-bottom:0}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}.course-card{display:block;transition:transform .15s,box-shadow .15s}.course-card:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00000014;text-decoration:none}.badge{display:inline-block;background:#eef2ff;color:var(--primary);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;margin-bottom:8px}.badge-level{background:#fef3c7;color:#92400e}.badge-insuffisant{background:#fee2e2;color:#b91c1c}.badge-progression{background:#fef3c7;color:#92400e}.badge-bien{background:#dbeafe;color:#1d4ed8}.badge-maitrise{background:#dcfce7;color:#15803d}.badge-lg{font-size:14px;padding:4px 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