body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-theme-bg-color, #ffffff);
    color: var(--tg-theme-text-color, #000000);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 80vh;
    text-align: center;
}

.container {
    background-color: var(--tg-theme-secondary-bg-color, #f4f4f5);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 350px;
}

h1 {
    font-size: 22px;
    margin-bottom: 10px;
}

#user-info {
    font-size: 16px;
    color: var(--tg-theme-hint-color, #999999);
    margin-bottom: 30px;
}

.btn {
    background-color: var(--tg-theme-button-color, #3390ec);
    color: var(--tg-theme-button-text-color, #ffffff);
    border: none;
    padding: 15px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 10px;
    width: 100%;
    cursor: pointer;
    transition: 0.2s;
}

.btn:active {
    transform: scale(0.95); 
}


.participants-section {
    text-align: left;
    margin: 20px 0;
    background-color: var(--tg-theme-bg-color, #ffffff);
    padding: 15px;
    border-radius: 10px;
}

.participants-section h3 {
    margin-top: 0;
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--tg-theme-text-color, #000000);
}

#players-list {
    list-style-type: none; 
    padding: 0;
    margin: 0;
    max-height: 180px;
    overflow-y: auto;
}

#players-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--tg-theme-hint-color, #e0e0e0);
    font-size: 15px;
    color: var(--tg-theme-text-color, #000000);
}

#players-list li:last-child {
    border-bottom: none;
}