/**
 * Mobile Optimizations CSS
 * 
 * This file contains additional style optimizations specifically for mobile devices,
 * especially for very small screens (< 375px).
 */

/* Very small mobile devices */
@media (max-width: 375px) {
    /* General UI adjustments */
    body {
        font-size: 14px;
    }
    
    header {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    /* Controls optimization */
    .controls {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
    
    .btn {
        padding: 0.4rem;
        font-size: 0.85rem;
        min-width: 0;
        width: 100%;
    }
    
    /* Thread visualization */
    .thread {
        padding: 0.5rem;
        min-width: 80px;
    }
    
    .thread-id {
        font-size: 0.8rem;
    }
    
    .thread-state {
        font-size: 0.7rem;
    }
    
    /* Diagram adjustments */
    .lifecycle-diagram text {
        font-size: 8px;
    }
    
    .lifecycle-diagram .state-circle {
        r: 20px;
    }
    
    /* Help center */
    .help-center-panel {
        width: 95%;
        max-width: 95%;
    }
    
    .help-tab {
        padding: 0.5rem 0.4rem;
        font-size: 0.7rem;
    }
    
    /* Tutorial guide */
    .tutorial-panel {
        width: 95%;
        max-width: 95%;
    }
    
    .tutorial-step {
        padding: 0.5rem;
    }
    
    /* Concurrency demos */
    .problem-cards {
        grid-template-columns: 1fr;
    }
    
    .demo-explanation {
        font-size: 0.9rem;
        padding: 0.5rem;
    }
    
    /* Quick controls */
    .quick-controls {
        bottom: 10px;
        right: 10px;
    }
    
    .quick-control-btn {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.2rem;
    }
    
    /* Demo explanations */
    .explanation-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .explanation-controls {
        width: 100%;
        margin-top: 0.5rem;
    }
    
    .phase-nav {
        padding: 0.3rem 0.5rem;
        font-size: 0.8rem;
    }
    
    .phase-indicator {
        font-size: 0.8rem;
    }
    
    .code-snippet {
        font-size: 0.8rem;
        padding: 0.5rem;
    }
    
    .explanation-steps li {
        font-size: 0.85rem;
    }
}