#rtt-container {
    max-width: 900px; /* Increased from 600px to 900px */
    width: 95%;
    margin: 20px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

#rtt-box {
    width: 100%;
    height: 300px; /* SLightly increased height for better proportion */
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    user-select: none;
    color: #ffffff;
    transition: background-color 0.2s ease;
    text-align: center;
    padding: 20px;
    box-sizing: border-box;
}

.rtt-state-waiting { background-color: #2b6cb0; }
.rtt-state-waiting-red { background-color: #e53e3e; }
.rtt-state-ready-green { background-color: #38a169; }
.rtt-state-finished { background-color: #2b6cb0; }

#rtt-message { font-size: 32px; font-weight: bold; margin-bottom: 12px; }
#rtt-subtext { font-size: 18px; opacity: 0.9; }

#rtt-result-form {
    margin-top: 20px;
    padding: 20px;
    background: #f7fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    text-align: center;
}

.rtt-input-group {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 15px;
}

.rtt-input-group input {
    padding: 10px 14px;
    border: 1px solid #cbd5e0;
    border-radius: 6px;
    width: 260px;
    font-size: 15px;
}

.rtt-input-group button {
    padding: 10px 20px;
    background: #3182ce;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 15px;
}

#rtt-leaderboard { margin-top: 35px; }
#rtt-leaderboard table { width: 100%; border-collapse: collapse; margin-top: 12px; }
#rtt-leaderboard th, #rtt-leaderboard td { padding: 12px 16px; border-bottom: 1px solid #e2e8f0; text-align: center; }