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

:root {
    /* Dark theme colors */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-tertiary: #888888;
    --accent-primary: #4ade80;
    --accent-secondary: #22d3ee;
    --accent-warning: #fbbf24;
    --accent-error: #f87171;
    --border-primary: #333333;
    --border-secondary: #444444;
    --shadow-primary: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --backdrop-blur: blur(12px);

    /* LEDLab specific colors */
    --matrix-bg: #000000;
    --pixel-on: #4ade80;
    --pixel-off: #1a1a1a;
    --pixel-dim: #22c55e;
    --control-bg: #1e1e1e;
    --preset-active: #4ade80;
    --node-connected: #22c55e;
    --node-disconnected: #ef4444;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --accent-primary: #16a34a;
    --accent-secondary: #0891b2;
    --accent-warning: #d97706;
    --accent-error: #dc2626;
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;
    --shadow-primary: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --backdrop-blur: blur(12px);

    /* Light theme LEDLab colors */
    --matrix-bg: #f8fafc;
    --pixel-on: #16a34a;
    --pixel-off: #f1f5f9;
    --pixel-dim: #22c55e;
    --control-bg: #f8fafc;
    --preset-active: #16a34a;
    --node-connected: #16a34a;
    --node-disconnected: #dc2626;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    height: 100vh;
    padding: 1rem;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.container {
    max-width: none;
    width: 100%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 0 2rem;
    max-height: calc(100vh - 2rem);
    overflow: hidden;
}

/* LEDLab specific styles */
.ledlab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-primary);
}

.ledlab-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-toggle:hover {
    background: var(--bg-tertiary);
    transform: scale(1.05);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* Main content layout */
.ledlab-main {
    display: flex;
    flex: 1;
    gap: 2rem;
    overflow: hidden;
}

/* Matrix display section */
.matrix-section {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-primary);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.matrix-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.matrix-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.matrix-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.matrix-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--matrix-bg);
    border-radius: 12px;
    border: 1px solid var(--border-secondary);
    position: relative;
    overflow: hidden;
}

.matrix-canvas {
    image-rendering: pixelated;
    image-rendering: -moz-crisp-edges;
    image-rendering: crisp-edges;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Control panel section */
.control-section {
    width: 320px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-primary);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.control-group {
    background: var(--control-bg);
    border-radius: 12px;
    padding: 1rem;
    border: 1px solid var(--border-secondary);
}

.control-group-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group-title::before {
    content: '';
    width: 4px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 2px;
}

/* Node list */
.node-controls {
    margin-bottom: 1rem;
}

.node-list {
    max-height: 200px;
    overflow-y: auto;
}

.node-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.node-item:hover {
    background: var(--bg-tertiary);
}

.node-item.connected {
    border-left: 3px solid var(--node-connected);
}

.node-item.disconnected {
    border-left: 3px solid var(--node-disconnected);
}

.node-item.selected {
    background: rgba(74, 222, 128, 0.1);
    border-left: 3px solid var(--accent-primary);
}

.node-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--node-disconnected);
}

.node-indicator.connected {
    background: var(--node-connected);
}

.node-info {
    flex: 1;
    font-size: 0.875rem;
}

.node-ip {
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.node-status {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Preset controls */
.preset-select {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 8px;
    padding: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.preset-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.preset-control {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.preset-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.preset-input {
    width: 100%;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 6px;
    padding: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.preset-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.2);
}

.preset-slider {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.preset-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

.preset-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Buttons */
.btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:hover {
    background: var(--accent-secondary);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.btn-secondary:hover {
    background: var(--bg-primary);
}

.btn-small {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
}

/* Matrix configuration */
.matrix-config {
    display: flex;
    gap: 1rem;
    align-items: end;
}

.matrix-input {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.matrix-input label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.matrix-input input {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: 6px;
    padding: 0.5rem;
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 80px;
}

.matrix-input input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.2);
}


/* Status indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 500;
}

.status-connected {
    background: rgba(34, 197, 94, 0.1);
    color: var(--node-connected);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.status-disconnected {
    background: rgba(239, 68, 68, 0.1);
    color: var(--node-disconnected);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-streaming {
    background: rgba(74, 222, 128, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

/* Loading and error states */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    padding: 1rem;
    color: var(--accent-error);
    text-align: center;
}

.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--text-secondary);
    font-style: italic;
}

/* Scrollbar styling */
.control-section::-webkit-scrollbar {
    width: 6px;
}

.control-section::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.control-section::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: 3px;
}

.control-section::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .ledlab-main {
        flex-direction: column;
        gap: 1rem;
    }

    .control-section {
        width: 100%;
        max-height: 300px;
    }

    .matrix-section {
        min-height: 400px;
    }
}

/* Animation keyframes */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
}