/ Modern Style /
.nav-tabs {
border-bottom: 3px solid #d76300;
background: linear-gradient(to bottom, #f8f9fa 0%, #e9ecef 100%);
padding: 10px 10px 0;
border-radius: 5px 5px 0 0;
}

.nav-tabs li a {
padding: 12px 25px;
background: transparent;
border: none;
color: #666;
font-weight: 500;
position: relative;
}

.nav-tabs li a:hover {
background: rgba(0, 102, 204, 0.1);
color: #d76300;
}

.nav-tabs li.active a {
background: #fff;
color: #d76300;
border-radius: 5px 5px 0 0;
box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
}

.nav-tabs li.active a::after {
content: '';
position: absolute;
bottom: -3px;
left: 0;
right: 0;
height: 3px;
background: #d76300;
}