.problem-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(6px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.problem-modal.show {
    display: flex;
}

.problem-modal-content {
    background: #fff;
    width: 100%;
    max-width: 480px;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.25);
    animation: slideUp 0.35s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.close-btn {
    background: none;
    border: none;
    font-size: 26px;
    cursor: pointer;
    color: #555;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}