/**
 * Buttons - Primary, secondary, and action buttons
 */

#startBtn,
#stopBtn {
    background-color: transparent;
    color: white;
    border: 1px solid white;
    padding: 6px 14px;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: all var(--transition-slow);
    font-family: var(--font-family);
    align-self: center;
    margin-top: var(--spacing-md);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

#startBtn:hover,
#stopBtn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

#startBtn:active,
#stopBtn:active {
    transform: scale(0.98) translateY(0);
    box-shadow: none;
}

#startBtn:focus,
#stopBtn:focus {
    outline: 2px solid rgba(255, 255, 255, 0.3);
    outline-offset: 2px;
}

/* Loading state */
.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}