/* CSS Variables */
:root {
    /* Colors - Dark Mode & Neon */
    --primary-color: #00e5ff;
    --primary-hover: #00b3cc;
    --secondary-color: #7b2cbf;
    --danger-color: #ff3366;
    --danger-hover: #cc0033;
    
    --text-color: #e6edf3;
    --text-muted: #8b949e;
    
    --background-color: #0f1219;
    --panel-background: rgba(26, 32, 44, 0.65);
    --panel-border: rgba(255, 255, 255, 0.08);
    --border-color: #30363d;
    --highlight-color: #ffd700;

    /* Dimensions */
    --container-max-width: 1600px;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --border-radius: 12px;
    --border-radius-sm: 8px;

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-size-small: 13px;
    --font-size-normal: 15px;
    --font-size-large: 18px;
    --font-size-xlarge: 24px;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
    margin: 0;
    padding: var(--spacing-lg);
    overflow-x: hidden;
    /* subtle background flair */
    background-image: radial-gradient(circle at top right, rgba(0, 229, 255, 0.05), transparent 50%),
                      radial-gradient(circle at bottom left, rgba(123, 44, 191, 0.05), transparent 50%);
    background-attachment: fixed;
}

/* Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

header h1 {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

/* Main Content Layout */
.main-content-wrapper {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    flex: 1 1 0%;
}

/* Columns */
.left-column,
.right-column {
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

.left-column {
    flex: 2 1 0%;
    min-width: 0;
    gap: var(--spacing-md);
}

.right-column {
    flex: 2 1 0%;
    min-width: 500px;
    max-width: 1200px;
    gap: var(--spacing-md);
}

/* Base Panels for Glassmorphism */
.info-panel, .raw-data-panel, .debug-panel, .settings-group, .cop-controls, .playback-controls, .weight-distribution-controls, .graph-wrapper {
    background: var(--panel-background);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: var(--border-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

/* Buttons and Controls */
.button-group {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.primary-button,
.calibrate-button,
.ready-button {
    background: linear-gradient(135deg, var(--primary-color), #0099cc);
    color: #000;
    font-weight: 600;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: var(--font-size-normal);
    transition: all var(--transition-speed) var(--transition-ease);
    outline: none;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    min-width: 180px;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.2);
}

.primary-button:hover,
.calibrate-button:hover,
.ready-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 229, 255, 0.4);
    background: linear-gradient(135deg, #00ffff, #00b3cc);
}

.primary-button:disabled,
.calibrate-button:disabled,
.ready-button:disabled {
    background: var(--border-color);
    color: var(--text-muted);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.danger-button {
    background: linear-gradient(135deg, var(--danger-color), #b3002d);
    color: white;
    font-weight: 600;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: var(--font-size-normal);
    transition: all var(--transition-speed) var(--transition-ease);
    outline: none;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    min-width: 180px;
    display: inline-block;
    box-shadow: 0 4px 15px rgba(255, 51, 102, 0.3);
}

.danger-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 51, 102, 0.5);
}

.danger-button:disabled {
    background: var(--border-color);
    color: var(--text-muted);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

/* Settings Panels */
.settings-panels {
    margin-bottom: var(--spacing-lg);
}

.settings-group {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
}

.settings-content {
    display: none;
    padding: var(--spacing-md) 0 0 0;
}

/* Toggle Switches */
.toggle-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: var(--transition-speed);
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: var(--text-color);
    transition: var(--transition-speed) var(--transition-ease);
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input:checked + .slider {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
}

input:checked + .slider:before {
    transform: translateX(20px);
    background-color: #000;
}

/* Control Groups */
.control-group {
    margin: var(--spacing-md) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.control-group label {
    min-width: 280px;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-color);
    font-size: var(--font-size-small);
}

.mat-control {
    margin: var(--spacing-sm) 0;
    color: var(--text-muted);
}
.mat-control label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.control-group input[type="number"], .mat-control input[type="number"], select {
    width: 70px;
    padding: 6px 10px;
    background: rgba(0,0,0,0.3) !important;
    color: var(--primary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family);
    font-weight: 500;
    outline: none;
    transition: border-color var(--transition-speed);
}
.control-group select {
    width: auto;
    color: var(--text-color);
}

.control-group input[type="number"]:focus, .control-group select:focus, .mat-control input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 229, 255, 0.2);
}

/* Custom Range Sliders */
.control-group input[type="range"] {
    flex: 1;
    margin: 0;
    -webkit-appearance: none;
    background: transparent;
}
.control-group input[type="range"]:focus {
    outline: none;
}
.control-group input[type="range"]::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    border: 1px solid var(--panel-border);
}
.control-group input[type="range"]::-webkit-slider-thumb {
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -6px;
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
    transition: transform 0.1s;
}
.control-group input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* Checkboxes */
input[type="checkbox"] {
    accent-color: var(--primary-color);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

#emaAlphaGroup, #medianWindowGroup {
    margin-bottom: var(--spacing-sm);
}

/* Visualization Container */
.visualization-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    flex: 1 1 0%;
    min-height: 0;
}

.heatmap-wrapper {
    width: 100%;
    height: 350px;
    min-height: 250px;
    max-height: 400px;
    position: relative;
    background-color: rgba(0, 0, 0, 0.5); /* darker for heatmap contrast */
    border-radius: var(--border-radius);
    border: 1px solid var(--panel-border);
    box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
    overflow: hidden;
    flex-shrink: 0;
}

/* Heatmap and Overlay */
#heatmap {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    z-index: 1;
}

#heatmap-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    pointer-events: none;
    z-index: 2;
}

/* Heatmap Text Overlays */
.hm-overlay {
    position: absolute;
    z-index: 15;
    pointer-events: none; /* Let clicks pass through if any */
    background-color: rgba(0, 0, 0, 0.45);
    color: var(--primary-color);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    white-space: nowrap;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hm-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.hm-value {
    font-size: 26px;
    font-weight: 700;
    line-height: 1;
    color: var(--primary-color);
}

.hm-overlay.left-foot { top: 50%; left: 10px; transform: translateY(-50%); }
.hm-overlay.left-toe { top: 10px; left: 10px; }
.hm-overlay.left-heel { bottom: 10px; left: 10px; }

.hm-overlay.right-foot { top: 50%; right: 10px; transform: translateY(-50%); }
.hm-overlay.right-toe { top: 10px; right: 10px; }
.hm-overlay.right-heel { bottom: 10px; right: 10px; }

/* CoP Controls and Display */
.cop-mode-toggle {
    position: absolute;
    top: auto;
    bottom: 25px;
    left: 45px;
    z-index: 10;
    background: rgba(26, 32, 44, 0.85);
    backdrop-filter: blur(4px);
    padding: 4px;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--panel-border);
    display: flex;
}

.cop-mode-toggle label {
    display: inline-block;
    padding: 6px 16px;
    background-color: transparent;
    color: var(--text-color);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    border-radius: 4px;
    transition: all 0.2s;
}

.cop-mode-toggle input[type="radio"] {
    display: none;
}

.cop-mode-toggle input[type="radio"]:checked + label {
    background-color: rgba(0, 229, 255, 0.2);
    color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color);
}

.cop-and-data {
    position: relative;
    display: flex;
    flex-direction: row;
    gap: var(--spacing-md);
    min-height: 0;
    flex: 1 1 0%;
}

#cop-graph {
    flex: 3 1 0%;
    background: var(--panel-background);
    backdrop-filter: blur(12px);
    border-radius: var(--border-radius);
    border: 1px solid var(--panel-border);
    min-width: 0;
    min-height: 280px;
    max-height: 350px;
    height: 100%;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

/* Velocity and Force Graphs */
.graph-wrapper {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    min-width: 0;
    min-height: 260px;
    max-height: 320px;
    height: 280px;
    overflow: hidden;
    flex-shrink: 0;
    width: 100%;
    position: relative;
}

/* Overlayed Plotly Graphs */
#velocity-graph,
#force-graph,
#cop-graph .js-plotly-plot {
    width: 100% !important;
    height: 100% !important;
    min-height: 200px;
    max-height: 300px;
    display: block;
    margin: 0;
    padding: 0;
    background: transparent !important;
}

/* Make plotly SVG transparent so the wrapper shows through */
.svg-container {
    background: transparent !important;
}

@media screen and (max-width: 900px) {
    .main-content-wrapper {
        flex-direction: column;
    }
    .left-column, .right-column {
        min-width: 0;
        max-width: 100%;
        width: 100%;
        height: auto;
    }
}

/* Raw Data Panel */
.raw-data-panel {
    flex: 1 1 0%;
    padding: var(--spacing-md);
    max-height: 350px;
    overflow-y: auto;
}

.raw-data-panel h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-normal);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

#raw-data {
    padding: var(--spacing-sm);
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    max-height: 280px;
    overflow-y: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 9.5px;
    white-space: nowrap;
    color: var(--primary-color);
}

/* Raw Data Scrollbar Customization */
#raw-data::-webkit-scrollbar, .raw-data-panel::-webkit-scrollbar, .right-column::-webkit-scrollbar {
    width: 6px;
}
#raw-data::-webkit-scrollbar-track, .raw-data-panel::-webkit-scrollbar-track, .right-column::-webkit-scrollbar-track {
    background: transparent;
}
#raw-data::-webkit-scrollbar-thumb, .raw-data-panel::-webkit-scrollbar-thumb, .right-column::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

/* Buttons in Rows */
.dual-button-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin: 16px 0;
    width: 100%;
}

.dual-button-row .btn-col {
    display: flex;
    flex-direction: column;
    flex: 1 1 0;
}

.dual-button-row .btn-col.left {
    align-items: flex-start;
}

.dual-button-row .btn-col.center {
    align-items: center;
}

.dual-button-row button {
    min-width: 190px;
}

.countdown {
    font-size: 20px;
    margin: 8px 0;
    font-weight: 700;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 229, 255, 0.5);
    min-height: 1.5em;
    width: 100%;
    text-align: inherit;
}

/* Weight Distribution Settings */
.weight-distribution-controls {
    padding: var(--spacing-md);
}
.method-selector {
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
    font-size: 14px;
}

.method-selector input[type="radio"] {
    accent-color: var(--primary-color);
}

/* Left vs Right and toe vs heel foot pressure distribution */
.pressure-title {
    font-weight: 600;
    margin-bottom: 15px;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.pressure-stats {
    display: flex;
    justify-content: space-around;
    gap: var(--spacing-md);
}

.foot-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    background: rgba(0,0,0,0.2);
    padding: 12px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--panel-border);
    flex: 1;
}

.front-foot, .back-foot {
    font-weight: 600;
    font-size: 18px;
    color: var(--primary-color);
    margin: 5px 0;
}

.toe-reading, .heel-reading {
    font-size: 13px;
    color: var(--text-color);
    background-color: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

/* Playback Controls */
.playback-controls {
    margin: 15px 0;
    padding: 16px;
}

.playback-buttons {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 12px;
}

.playback-buttons button {
    padding: 8px;
    width: 40px;
    height: 40px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    border: 1px solid var(--panel-border);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.playback-buttons button:hover:not(:disabled) {
    background: var(--primary-color);
    color: #000;
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.6);
    border-color: var(--primary-color);
}

.playback-buttons button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.playback-slider-container {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 15px 0;
    width: 100%;
}

#frameSlider {
    flex: 1;
    min-width: 0;
    -webkit-appearance: none;
    background: transparent;
    cursor: pointer;
}

#frameSlider::-webkit-slider-runnable-track {
    width: 100%;
    height: 6px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    border: 1px solid var(--panel-border);
}

#frameSlider::-webkit-slider-thumb {
    height: 16px;
    width: 16px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    -webkit-appearance: none;
    margin-top: -6px;
    box-shadow: 0 0 8px rgba(0, 229, 255, 0.6);
    transition: transform 0.1s;
}

#frameSlider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#frameSlider:focus {
    outline: none;
}

#timeDisplay {
    min-width: 80px;
    text-align: right;
    font-family: monospace;
    font-size: 14px;
    color: var(--primary-color);
}

.speed-control {
    text-align: center;
    margin-top: 10px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Stats Display */
.info-panel {
    padding: var(--spacing-md);
}

.stats-title {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);    
    gap: 12px;
}

.stat-item {
    background-color: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--panel-border);
    padding: 10px 12px;
    border-radius: var(--border-radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
}
.stat-item label {
    color: var(--text-muted);
}
.stat-item span {
    font-weight: 600;
    color: var(--primary-color);
    font-family: monospace;
    font-size: 14px;
}

/* Debug Panel */
.debug-panel {    
    margin-top: 20px;
    padding: 15px;
}

.debug-panel span {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
}

#connection-info {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background-color: rgba(0, 0, 0, 0.4);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    max-height: 200px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    font-size: 12px;
}

/* Responsive Design */
@media screen and (min-width: 1200px) {
    .main-content-wrapper {
        flex-direction: row;
        align-items: flex-start;
    }

    .left-column {
        flex: 3 1 0%;
        min-width: 0;
    }

    .right-column {
        flex: 2 1 0%;
        min-width: 300px;
        max-width: 500px;
        overflow-y: auto;
    }
}

/* Print Styles */
@media print {
    .button-group,
    .controls,
    .settings-panels,
    .playback-controls,
    .debug-panel,
    .weight-distribution-controls,
    .cop-controls {
        display: none !important;
    }
    body {
        background: white !important;
        color: black !important;
    }
}