* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: #0a0a14;
    color: #e0e0ff;
    overflow: hidden;
    height: 100vh;
    display: flex;
}

/* Barra superiore */
#top-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.85);
    color: white;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10;
    backdrop-filter: blur(4px);
    border-bottom: 1px solid #3a3a5a;
}

#top-bar button {
    background: #4a4a7a;
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

#top-bar button:disabled {
    background: #555;
    cursor: not-allowed;
}

#top-bar label {
    margin: 0 8px 0 16px;
    font-weight: bold;
}

#top-bar input[type="range"] {
    width: 120px;
}

#top-bar #dtValue {
    min-width: 60px;
    text-align: right;
    font-family: monospace;
}

#top-bar #statusText {
    margin-left: auto;
    font-style: italic;
    color: #6cf;
}

#canvas-container {
    flex: 1;
    position: relative;
}

#panel {
    width: 280px;
    background: #1a1a2e;
    padding: 20px;
    border-left: 1px solid #2d3748;
    overflow-y: auto;
    height: 100vh;
}

h2 {
    color: #63b3ed;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.param-row {
    display: flex;
    justify-content: space-between;
    margin: 8px 0;
    font-family: monospace;
    font-size: 0.95em;
    align-items: center;
}

label {
    color: #a0aec0;
    display: block;
    margin-bottom: 4px;
}

input[type="range"] {
    width: 100%;
    margin: 8px 0;
}

input[type="checkbox"] {
    transform: scale(1.2);
}

.buttons {
    display: flex;
    gap: 8px;
    margin: 15px 0;
    flex-wrap: wrap;
}

button {
    padding: 8px 14px;
    background: #4a5568;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 600;
    flex: 1;
    min-width: 80px;
}

button:hover {
    background: #2d3748;
}

button:disabled {
    background: #666;
    cursor: not-allowed;
}

select {
    width: 100%;
    padding: 6px;
    background: #2d3748;
    color: #e0e0ff;
    border: 1px solid #4a5568;
    border-radius: 4px;
    margin-top: 4px;
}

.status {
    margin-top: 15px;
    padding: 10px;
    background: #0f0f1b;
    border-radius: 4px;
    font-size: 0.9em;
}

.energy-good { color: #68d391; }
.energy-warning { color: #f6ad55; }
.energy-bad { color: #fc8181; }

#info {
    position: absolute;
    bottom: 15px;
    left: 15px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.85em;
    pointer-events: none;
}