.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.35);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.clean-popup {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    max-width: 480px;
    width: 100%;
    padding: 44px 36px 36px 36px;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.close-popup {
    position: absolute;
    top: 22px;
    right: 28px;
    font-size: 30px;
    color: #888;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 2;
    transition: color 0.2s;
}
.close-popup:hover {
    color: #222;
}

.popup-heading {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: left;
    margin-bottom: 36px;
    color: #222;
    letter-spacing: -1px;
}

#popupForm {
    display: flex;
    flex-direction: column;
    gap: 26px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 1.08rem;
    color: #222;
    font-weight: 500;
    margin-bottom: 2px;
}

.form-group input {
    padding: 15px 16px;
    border: 1.5px solid #e0e0e0;
    border-radius: 7px;
    font-size: 1.08rem;
    background: #fafbfc;
    transition: border 0.2s;
}
.form-group input:focus {
    border: 1.5px solid #ffd600;
    outline: none;
    background: #fffbe6;
}

.popup-submit-btn {
    margin-top: 18px;
    width: 100%;
    padding: 18px 0;
    background: #ffd600;
    color: #222;
    border: none;
    border-radius: 7px;
    font-size: 1.18rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    box-shadow: 0 2px 8px rgba(255,214,0,0.08);
    letter-spacing: 0.5px;
}
.popup-submit-btn:hover {
    background: #ffe066;
    color: #111;
}

@media (max-width: 600px) {
    .clean-popup {
        max-width: 97vw;
        padding: 18px 4vw 18px 4vw;
    }
    .popup-heading {
        font-size: 1.3rem;
        margin-bottom: 18px;
    }
    .popup-submit-btn {
        font-size: 1rem;
        padding: 12px 0;
    }
}