:root{--primary:#4f46e5;--secondary:#06b6d4;--dark:#111827;--light:#f8fafc;--success:#16a34a;--warning:#f59e0b;--danger:#dc2626}
body{background:linear-gradient(135deg,#eef2ff,#ecfeff);font-family:Arial,Helvetica,sans-serif;color:#1f2937;min-height:100vh}.app-nav{background:linear-gradient(90deg,var(--primary),var(--secondary));box-shadow:0 8px 24px rgba(79,70,229,.22)}.login-card,.panel-card{background:rgba(255,255,255,.95);border-radius:24px;box-shadow:0 20px 45px rgba(15,23,42,.12);border:1px solid rgba(255,255,255,.5)}.hero-title{font-size:2rem;font-weight:800;color:var(--dark)}.btn-primary{background:linear-gradient(90deg,var(--primary),var(--secondary));border:none}.btn-primary:hover{opacity:.92}.stat-card{border-radius:20px;padding:22px;color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));box-shadow:0 12px 30px rgba(79,70,229,.24)}.table-card{background:#fff;border-radius:20px;padding:20px;box-shadow:0 12px 30px rgba(15,23,42,.08)}.sidebar-link{display:block;padding:12px 15px;border-radius:12px;text-decoration:none;color:#374151;margin-bottom:8px}.sidebar-link:hover,.sidebar-link.active{background:#eef2ff;color:#3730a3}.small-muted{font-size:.9rem;color:#6b7280}.badge-present{background:#dcfce7;color:#166534}.badge-absent{background:#fee2e2;color:#991b1b}@media(max-width:768px){.hero-title{font-size:1.55rem}.table-responsive{font-size:.9rem}}