/* Intro Modal Styles */
#introModal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease-in-out;
}

#introModal .modal-content {
    position: relative;
    background: #fff;
    padding: 24px 28px 40px 28px; /* bottom padding increased for close button */
    width: 90%;
    max-width: 420px;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25);
    animation: slideIn 0.25s ease-out;
}

#introModal .close-button-top {
    position: absolute;
    top: 14px;
    right: 18px;
    background: transparent;
    border: none;
    font-size: 26px;
    cursor: pointer;
    color: #444;
}

#introModal .close-button-bottom {
    padding: 10px 20px;
    background: #000;
    color: #fff;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

#introModal .close-button-container {
    margin-top: 28px;
}

@keyframes slideIn {
    from { transform: translateY(-10px); opacity: 0; }
    to   { transform: translateY(0); opacity: 1; }
}