/* Game stylesheet */
html, body { margin:0; padding:0; width:100%; height:100%; overflow:hidden; background:#dceaf2; }
    
#game-canvas { display:block; width:100vw; height:100vh; touch-action:none; }

button { cursor:pointer; }

/* Message dialog */
#message-dialog {
    position: absolute;
    bottom: 1em;
    left: 50%;
    transform: translateX(-50%);
    border: solid 1px #000;
    background-color: #fff;
    padding: 6px 12px;
    font-family: tahoma;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(20, 30, 40, 0.45);
    z-index: 1000;
}

.modal.hidden { display:none; }

.modal-content {
    position: relative;
    max-width: min(90vw, 420px);
    max-height: 80vh;
    overflow-y: auto;
    background: #dceaf2;
    border: 2px solid #6fa0c9;
    border-radius: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    padding: 28px 42px 24px 24px;
    font-family: sans-serif;
    color: #2f4a5c;
}

.modal-message { font-size:15px; line-height:1.5; white-space:pre-wrap; }

.modal-close {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: #2f7fbf;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover { background:rgba(174, 205, 227, 0.35); }