body{background-color:#f8f9fa}.navbar-brand{font-weight:700}.table{background-color:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 4px #0000001a}.btn-action{margin-right:5px}.card-campaign{transition:transform .2s}.card-campaign:hover{transform:translateY(-2px);box-shadow:0 4px 8px #00000026}.loading-spinner{display:flex;justify-content:center;align-items:center;padding:50px}.empty-state{text-align:center;padding:50px;color:#6c757d}.pixel-tracker{width:1px;height:1px;display:none}