body {
    background-color: #f5f6fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar-brand {
    font-size: 1.3rem;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    border-radius: 10px 10px 0 0 !important;
}

.session-card {
    transition: transform 0.2s;
}

.session-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.progress {
    border-radius: 8px;
}

.progress-bar {
    font-size: 0.75rem;
    line-height: 25px;
}

.table a {
    color: #198754;
}

.table a:hover {
    color: #146c43;
}

.btn-success {
    background-color: #25D366;
    border-color: #25D366;
}

.btn-success:hover {
    background-color: #1da851;
    border-color: #1da851;
}

.bg-success {
    background-color: #25D366 !important;
}

.navbar-dark.bg-success {
    background-color: #128C7E !important;
}