:root {
    --bg-dark-primary: #1a1c28;
    --bg-dark-secondary: #2a2d3e;
    --bg-dark-tertiary: #3b3e52;

    --accent-primary: #00ffff;
    --accent-secondary: #9f78ff;
    --accent-success: #4CAF50;
    --accent-danger: #F44336;

    --text-primary: #e0e0e0;
    --text-secondary: #a0a0c0;
    --text-highlight: var(--accent-primary);

    --border-color: #4a4d64;
    --panel-shadow: 0 0 15px rgba(0, 255, 255, 0.1), 0 0 5px rgba(159, 120, 255, 0.1);
    --glow-effect: 0 0 8px var(--accent-primary);
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-dark-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    line-height: 1.6;
    font-size: 15px;
    overflow-x: hidden;
}

.container {
    background: linear-gradient(145deg, var(--bg-dark-secondary), #222433);
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), var(--panel-shadow);
    padding: 25px;
    width: 100%;
    max-width: 1600px;
    border: 1px solid var(--border-color);
}

header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

header h1 {
    font-family: 'Orbitron', sans-serif;
    color: var(--text-highlight);
    text-shadow: var(--glow-effect);
    margin-bottom: 8px;
    font-size: 2.2em;
    letter-spacing: 1px;
}

header p {
    color: var(--text-secondary);
    font-size: 1.1em;
}

.main-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 25px;
}

@media (max-width: 1100px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

.controls-sidebar,
.main-content-area {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.panel {
    background-color: rgba(42, 45, 62, 0.7);
    padding: 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3), var(--panel-shadow);
    backdrop-filter: blur(3px);
}

.panel h2 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-secondary);
    margin-top: 0;
    border-bottom: 2px solid var(--accent-secondary);
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 1.4em;
    text-shadow: 0 0 5px var(--accent-secondary);
    letter-spacing: 0.5px;
}

.panel h3 {
    font-size: 1.15em;
    margin-top: 18px;
    margin-bottom: 12px;
    color: var(--text-highlight);
}

.input-group {
    margin-bottom: 18px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.95em;
}

.input-group label .tooltip {
    font-size: 0.85em;
    color: var(--accent-primary);
    cursor: help;
    opacity: 0.7;
}

.input-group select,
.input-group input[type="number"],
.input-group input[type="range"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 0.95em;
    background-color: var(--bg-dark-tertiary);
    color: var(--text-primary);
    transition: border-color .2s ease-in-out, box-shadow .2s ease-in-out;
}

.input-group select:focus,
.input-group input[type="number"]:focus,
.input-group input[type="range"]:focus {
    border-color: var(--accent-primary);
    box-shadow: var(--glow-effect);
    outline: none;
}

.input-group input[type="range"] {
    padding: 0;
    accent-color: var(--accent-primary);
}

.input-group .range-value {
    font-weight: bold;
    color: var(--text-highlight);
}

button.control-button {
    font-family: 'Orbitron', sans-serif;
    background: linear-gradient(145deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-dark-primary);
    padding: 12px 18px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1em;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3), 0 0 8px rgba(0, 255, 255, 0.3);
    width: 100%;
}

button.control-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4), 0 0 12px var(--accent-primary);
}

button.control-button:active {
    transform: translateY(0px);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

button.control-button.danger {
    background: linear-gradient(145deg, var(--accent-danger), #c0392b);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3), 0 0 8px rgba(244, 67, 54, 0.3);
}

button.control-button.danger:hover {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4), 0 0 12px var(--accent-danger);
}

button:disabled {
    background: var(--bg-dark-tertiary) !important;
    color: var(--text-secondary) !important;
    cursor: not-allowed !important;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5) !important;
    transform: none !important;
}

.status-display {
    margin-top: 15px;
}

.status-display p {
    margin: 10px 0;
    font-size: 1em;
    color: var(--text-secondary);
}

.status-display span {
    font-weight: bold;
    color: var(--text-primary);
}

#visualizationCanvasContainer {
    position: relative;
    width: 100%;
    min-height: 400px;
    aspect-ratio: 1/1;
    background-color: rgba(10, 12, 20, 0.7);
    border: 1px solid var(--accent-primary);
    border-radius: 8px;
    box-shadow: inset 0 0 10px rgba(0, 255, 255, 0.1);
}

#dataPointsCanvas,
#modelVisualizationCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#modelVisualizationCanvas {
    z-index: 0;
    opacity: 0.7;
}

#dataPointsCanvas {
    z-index: 1;
}

.visualization-caption {
    font-size: 0.9em;
    text-align: center;
    color: var(--text-secondary);
    margin-top: 10px;
}

.metrics-display {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    text-align: center;
}

.metric-item {
    background-color: var(--bg-dark-tertiary);
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.metric-item .label {
    font-size: 0.9em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-item .value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5em;
    font-weight: bold;
    color: var(--text-highlight);
    margin-top: 5px;
    display: block;
}

.algorithm-info {
    font-size: 1em;
    color: var(--text-secondary);
    line-height: 1.7;
}

.algorithm-info h3 {
    color: var(--accent-secondary);
    text-shadow: 0 0 4px var(--accent-secondary);
}

.algorithm-info p {
    background-color: rgba(0, 0, 0, 0.1);
    padding: 10px;
    border-radius: 4px;
    border-left: 3px solid var(--accent-secondary);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}