.layout-grid {
    display: grid;
    grid-template-columns: 1fr 450px; 
    gap: 30px;
    margin-top: 20px;
}

.sim-viewport {
    position: relative;
    height: 650px; 
    background: #fff;
    border: 2px solid var(--light-green);
    border-radius: 25px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: inset 0 0 30px rgba(0,0,0,0.05);
}

#img-fundo { width: 95%; height: 95%; object-fit: contain; z-index: 1; }

.cache-table-container {
    background: #fff;
    padding: 20px;
    border-radius: 20px;
    border: 2px solid var(--light-green);
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
}

.cache-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 6px;
    font-family: 'Courier New', Courier, monospace;
}

.cache-table th, .cache-table td { 
    padding: 15px; 
    text-align: center; 
    font-size: 1.1rem; 
    font-weight: bold;
    border: 1px solid #eee;
}

.cache-table th { 
    background: var(--primary-green); 
    color: white; 
    border-radius: 8px 8px 0 0;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.cache-table td { background: #fafafa; border-radius: 4px; }

.row-active { background: #e3f2fd !important; border: 2px solid #2196f3 !important; transform: scale(1.02); transition: 0.4s; }
.row-conflict { background: #ffebee !important; border: 2px solid var(--error-red) !important; animation: flash-conflict 0.5s 3; }

@keyframes flash-conflict { 50% { opacity: 0.6; transform: scale(1.05); } }

.floating-card {
    position: absolute;
    padding: 12px 20px;
    background: var(--warning-orange);
    color: white;
    font-weight: 900;
    border-radius: 10px;
    font-size: 1rem;
    z-index: 100;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    text-align: center;
    border: 2px solid rgba(255,255,255,0.2);
}

.nav.btn-step, .nav.btn-restart {
    border: none;
    border-radius: 50px !important;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 15px 40px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.btn-step { background-color: var(--warning-orange) !important; color: white !important; }
.btn-restart { background-color: var(--light-green) !important; color: var(--primary-green) !important; }

.nav:hover:not(:disabled) { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0,0,0,0.2); }

@media (max-width: 1200px) {
    .layout-grid { grid-template-columns: 1fr; }
    .sim-viewport { height: 500px; }
}