:root {
    --bg-color: #1a1a1a;
    --primary-color: #2a2a2a;
    --secondary-color: #3a3a3a;
    --font-color: #e0e0e0;
    --accent-color: #00aaff;
    --green-color: #00ff88;
    --red-color: #ff4444;
}

body {
    background-color: var(--bg-color);
    color: var(--font-color);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1, h2, h3 {
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 20px;
}

.main-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    justify-content: center;
}

.simulation-column {
    flex: 2;
    min-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.controls-column {
    flex: 1;
    min-width: 300px;
    background-color: var(--primary-color);
    padding: 20px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-self: flex-start;
}

.vis-container {
    background-color: #000;
    border: 2px solid var(--secondary-color);
    border-radius: 8px;
    height: 600px;
    position: relative;
    overflow: hidden;
}

#simulationCanvas {
    width: 100%;
    height: 100%;
}

.info-container {
    display: flex;
    justify-content: space-around;
    background-color: var(--primary-color);
    padding: 15px;
    border-radius: 8px;
}

.info-box {
    text-align: center;
}

.info-box span {
    display: block;
    font-size: 1.2em;
}

.info-box span:first-child {
    font-size: 0.9em;
    color: var(--accent-color);
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-group label {
    margin-bottom: 5px;
    color: var(--font-color);
}

.control-group input[type="text"],
.control-group input[type="number"],
.control-group select {
    background-color: var(--secondary-color);
    color: var(--font-color);
    border: 1px solid var(--bg-color);
    border-radius: 4px;
    padding: 8px;
    width: 100%;
    box-sizing: border-box;
}

.control-group input[type="range"] {
    width: 100%;
}

.note {
    font-size: 0.8em;
    color: #aaa;
    margin-top: 5px;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

button {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 4px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s;
}

#start-button {
    background-color: var(--green-color);
    color: #000;
}

#start-button:hover {
    background-color: #33ffaa;
}

#reset-button {
    background-color: var(--red-color);
    color: #000;
}

#reset-button:hover {
    background-color: #ff7777;
}

.system-analysis-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    margin-top: 20px;
    justify-content: center;
    background-color: var(--primary-color);
    padding: 20px;
    border-radius: 8px;
}

.formulas-container, .block-diagram-container {
    flex: 1;
    min-width: 300px;
}

.formula-item {
    margin-bottom: 15px;
}

.formula-item span {
    font-weight: bold;
    color: var(--accent-color);
}

.formula-box {
    background-color: var(--secondary-color);
    padding: 15px;
    border-radius: 4px;
    margin-top: 5px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 1.1em;
    text-align: center;
    overflow-x: auto;
}





.plots-container {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    margin-top: 20px;
    justify-content: center;
}

.plot-box {
    flex: 1;
    min-width: 400px;
    height: 400px;
    background-color: var(--primary-color);
    border-radius: 8px;
}