:root {
    --primary-color: #4e73df;
    --success-color: #1cc88a;
    --info-color: #36b9cc;
    --warning-color: #f6c23e;
    --danger-color: #e74a3b;
}

body {
    font-family: 'Segoe UI', Roboto, sans-serif;
    background-color: #f8f9fc;
    padding-top: 70px;
}

.navbar-brand {
    font-weight: 800;
}

.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.1);
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: #f8f9fc;
    border-bottom: 1px solid #e3e6f0;
    font-weight: 700;
}

.progress {
    border-radius: 0.5rem;
    background-color: #eaecf4;
}

.refresh-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
}

.table th, .table td {
    vertical-align: middle;
}

.suggestion-text {
    white-space: pre-line;
    line-height: 1.3;
}

@media (max-width: 768px) {
    .display-4 { font-size: 1.8rem; }
    .table { font-size: 0.75rem; }
}