/* stop.css */
.stop-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    text-align: center;
    color: white;
}

.stop-button-wrapper {
    position: relative;
    margin: 2rem 0;
}

.stop-btn {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: none;
    background: #ef4444;
    color: white;
    font-size: 3rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    transition: all 0.3s;
    animation: pulse-red 2s infinite;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stop-btn:hover {
    transform: scale(1.05);
}

.stop-btn.active {
    background: #3b82f6;
    /* Blue for calm/observe */
    animation: none;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.5);
    font-size: 1.5rem;
    padding: 2rem;
}

.stop-message {
    font-size: 1.5rem;
    margin-top: 2rem;
    min-height: 3em;
    opacity: 0;
    transition: opacity 0.5s;
}

.stop-message.visible {
    opacity: 1;
}

@keyframes pulse-red {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
    }

    70% {
        transform: scale(1);
        box-shadow: 0 0 0 20px rgba(239, 68, 68, 0);
    }

    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    }
}