:root{--brand:#1d4ed8;--brand-hover:#1e40af;--brand-light:#dbeafe;--brand-light-20:#dbeafe33;--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;--green-100:#dcfce7;--green-200:#bbf7d0;--green-500:#22c55e;--green-800:#166534;--orange-500:#f97316;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -1px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -2px rgba(0,0,0,0.05);--debug-border:#ef4444;--debug-bg:rgba(239,68,68,0.2)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}.container{width:100%;max-width:1280px;margin-left:auto;margin-right:auto;padding-left:1rem;padding-right:1rem}a{text-decoration:none;color:inherit}.logo-group{display:flex;align-items:center;gap:0.5rem}ul{list-style:none}body{font-family:'Inter',sans-serif;color:var(--gray-800);min-height:100vh;display:flex;flex-direction:column;background-color:var(--gray-100);background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e5e7eb' fill-opacity='0.4'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}.rainbow_border{height:4px;width:100%;background:linear-gradient(to right,#ef4444 0%,#ef4444 20%,#1d4ed8 20%,#1d4ed8 40%,#65a30d 40%,#65a30d 60%,#60a5fa 60%,#60a5fa 80%,#db2777 80%,#db2777 100%)}.isConnected{position:fixed;top:7rem;right:10rem;display:inline-flex;align-items:center;padding:0.25rem 0.75rem;border-radius:9999px;font-size:0.875rem;font-weight:500;background-color:var(--green-100);color:var(--green-800);border:1px solid var(--green-200);box-shadow:var(--shadow-sm)}.statusDot{width:0.5rem;height:0.5rem;background-color:var(--green-500);margin-right:0.5rem;border-radius:9999px;animation:pulse 5s cubic-bezier(0.4,0,0.6,1) infinite}@keyframes pulse{50%{opacity:1}100%{opacity:.5}}#main{max-width:1000px;margin:2rem auto;font-family:'Segoe UI',Tahoma,Geneva,Verdana,sans-serif;padding:0 1rem}.page-header{margin-bottom:2rem;color:#1f2937}.page-header h2{letter-spacing:-0.025em}.page-header p{margin-top:0.5rem;color:#6b7280}.navbar{background-color:#fff;box-shadow:var(--shadow-sm);position:relative;z-index:50}.navbar-inner{max-width:80rem;display:flex;justify-content:space-between;align-items:center;height:4rem}.logo{display:flex;align-items:center}span.DEBUG{border:1px solid var(--debug-border);background-color:var(--debug-bg);padding:0.1rem 0.4rem;border-radius:0.25rem;color:var(--debug-border);font-weight:bold}.logo-icon{width:2rem;height:2rem;background-color:var(--brand);color:#fff;border-radius:0.25rem;display:flex;align-items:center;justify-content:center;font-weight:700}.logo-icon img{width:100%;height:100%;object-fit:contain}.logo-group{display:flex;align-items:center;margin-left:0.5rem}.logo-title{font-weight:700;font-size:1.25rem;color:var(--gray-900)}.nav-links ul{display:flex;gap:1.5rem;align-items:center}.nav-link{color:var(--gray-500);font-size:0.875rem;font-weight:500;transition:color 0.2s}.nav-link:hover{color:var(--brand)}.nav-icon-btn{display:inline-flex;align-items:center;justify-content:center;padding:0.5rem;color:#4b5563;border-radius:9999px;transition:background-color 200ms ease,color 200ms ease;text-decoration:none}.nav-icon-btn:hover{background-color:#1d4ed8;color:#ffffff}#footer{background-color:#fff;border-top:1px solid var(--gray-200);margin-top:auto;display:flex;flex-direction:column;justify-content:space-between;padding:1rem 1rem;font-size:0.875rem}.footer .container{display:flex;flex-direction:column}.footer-wrapper{display:flex;flex-direction:column;gap:1.5rem;width:100%;margin-bottom:0.5rem}#current_datetime{color:var(--gray-500)}.footer-links{display:flex;flex-direction:column;gap:1rem}.link_group{display:flex;align-items:center;gap:0.5rem;align-items:center}#admin_link{display:flex;align-items:center;gap:0.5rem;white-space:nowrap}.user_name{color:var(--gray-500);font-size:0.75rem}.separator{color:var(--gray-300)}@media (min-width:768px){.footer-wrapper{flex-direction:row;justify-content:space-between;align-items:center}.footer-links{flex-direction:row;align-items:center;gap:2.5rem;margin-top:0}#footer{padding-left:2rem;padding-right:2rem}}.footer-period .font-semibold{color:var(--gray-700)}.cours-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}.cours-box{position:relative;background:var(--brand);border-radius:8px;padding:10%;color:white;text-decoration:none;cursor:pointer;transition:all 0.3s ease-in-out;box-shadow:var(--shadow-md);min-height:150px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding-top:30px}.cours-box:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);background:var(--brand-hover)}.cours-box h3{font-size:1.5rem;line-height:2rem;font-weight:700;color:white}.cours-box .code{position:absolute;top:1rem;left:1rem;background-color:var(--brand-light-20);color:var(--brand-light);font-size:0.75rem;line-height:1rem;font-weight:700;padding:0.25rem 0.5rem;border-radius:0.25rem;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:0.75rem}.cours-name{font-size:1.2em;margin:0;text-align:center}@media (max-width:1024px){.cours-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.cours-grid{grid-template-columns:1fr}}.cours-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}.cours-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}.cours-box{position:relative;background:var(--brand);border-radius:8px;padding:10%;color:white;text-decoration:none;cursor:pointer;transition:all 0.3s ease-in-out;box-shadow:var(--shadow-md);min-height:150px;display:flex;flex-direction:column;justify-content:center;align-items:center;padding-top:30px}.cours-box:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);background:var(--brand-hover)}.cours-box h3{font-size:1.5rem;line-height:2rem;font-weight:700;color:white}.cours-box .code{position:absolute;top:1rem;left:1rem;background-color:var(--brand-light-20);color:var(--brand-light);font-size:0.75rem;line-height:1rem;font-weight:700;padding:0.25rem 0.5rem;border-radius:0.25rem;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:0.75rem}.cours-name{font-size:1.2em;margin:0;text-align:center}@media (max-width:1024px){.cours-grid{grid-template-columns:repeat(2,1fr)}}@media (max-width:640px){.cours-grid{grid-template-columns:1fr}}.cours-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:20px}