.amu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.amu-popup {
    background: #fff;
    padding: 30px;
    border-radius: 15px;
    width: 90%;
    max-width: 450px;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    color: #333;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.amu-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: #999;
}

.amu-popup h2 {
    margin-top: 0;
    color: #e53935;
    text-align: center;
    font-size: 1.5rem;
}

.amu-field {
    margin-bottom: 15px;
}

.amu-field label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    font-size: 0.9rem;
}

.amu-field input, .amu-field select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    box-sizing: border-box;
}

.amu-submit {
    width: 100%;
    padding: 12px;
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-weight: 700;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.amu-submit:hover {
    background: #c62828;
}

.amu-open-btn {
    padding: 15px 30px;
    background: #e53935;
    color: #fff;
    border: none;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(229, 57, 53, 0.4);
}

#amu-result {
    text-align: center;
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
}

.eligible-msg {
    color: #2e7d32;
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
}

.not-eligible-msg {
    color: #c62828;
    background: #ffebee;
    border: 1px solid #ffcdd2;
}

.amu-reg-btn {
    display: inline-block;
    margin-top: 15px;
    padding: 10px 25px;
    background: #2e7d32;
    color: #fff !important;
    text-decoration: none !important;
    border-radius: 25px;
    font-weight: 700;
    transition: background 0.3s;
}

.amu-reg-btn:hover {
    background: #1b5e20;
}