.fullscreen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1100;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.3s ease-in-out, visibility 0.3s;
}

.fullscreen-overlay.active {
    visibility: visible;
    opacity: 1;
}

.alert-modal {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.3);
    text-align: center;
    min-width: 350px;
    max-width: 90%;
    position: relative;
    border: 3px solid;
}

.alert-header {
    color: white;
    padding: 10px;
    font-weight: bold;
    font-size: 16px;
    text-align: center;
    border-top-left-radius: 7px;
    border-top-right-radius: 7px;
}

.alert-body {
    padding: 10px;
}

.alert-modal button {
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
    color: white;
}

.error {
    border-color: rgb(220, 53, 69);
}
.error .alert-header, .error button {
    background: rgb(220, 53, 69);
}

.warning {
    border-color: rgb(255, 140, 0);
}
.warning .alert-header, .warning button {
    background: rgb(255, 140, 0);
}

.success {
    border-color: rgb(40, 167, 69);
}
.success .alert-header, .success button {
    background: rgb(40, 167, 69);
}