/* Modern tweaks */
:root { --brand-bg: #e9f6ff; }
body { background-color: #f6f8fb; }
.navbar { background: var(--brand-bg) !important; border-bottom: 1px solid rgba(0,0,0,0.05); }
.card { border: 1px solid rgba(0,0,0,0.05); box-shadow: 0 2px 8px rgba(0,0,0,0.04); }
.table thead th { font-weight: 600; color: #495057; }
.btn { transition: all .2s ease; }
.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,0.08); }