.header-gradient {
    background: linear-gradient(135deg, #8e2de2 0%, #4a00e0 100%);
    color: white;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.calculator-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.calculator-card:hover {
    transform: translateY(-5px);
}

.btn-primary {
    background: linear-gradient(135deg, #8e2de2, #4a00e0);
    border: none;
    transition: all 0.3s;
    color: #fff;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(142, 45, 226, 0.3);
}

.number-display {
    font-size: 3rem;
    font-weight: 700;
    color: #8e2de2;
    margin-bottom: 0.5rem;
}

.result-card {
    border-left: 4px solid #8e2de2;
    margin-bottom: 1.5rem;
}

.compatibility-meter {
    height: 10px;
    border-radius: 5px;
    background: linear-gradient(90deg, #ff0000, #ffcc00, #33cc33);
    margin-bottom: 10px;
}

.lucky-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background-color: #8e2de2;
    color: white;
    border-radius: 50%;
    margin-right: 10px;
    font-weight: bold;
}

.spinner-border {
    width: 1.5rem;
    height: 1.5rem;
    border-width: 0.2em;
}

#resultsSection .tab-content {
    padding: 20px;
    background-color: white;
    border-radius: 0 0 8px 8px;
}

#resultsSection .nav-tabs .nav-link.active {
    font-weight: 500;
    color: #8e2de2 !important;
    border-bottom: 3px solid #8e2de2;
}

#resultsSection .nav-tabs .nav-link {
    color: #666 !important;
    border: none;
}