:root {
    --bg-main: #0a0e17;
    --bg-card: #121824;
    --accent: #38bdf8;
    --border: #1e293b;
    --text: #f8fafc;
}

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

body {
    background: var(--bg-main);
    color: var(--text);
    font-family: system-ui, sans-serif;
    height: 100vh;
    overflow: hidden;
}

.dashboard {
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 1.5rem;
    gap: 1rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.badge {
    font-size: 0.75rem;
    background: #0369a1;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    color: #e0f2fe;
}

.control-panel {
    display: flex;
    gap: 0.5rem;
    width: 50%;
}

input {
    flex: 1;
    background: #1e293b;
    border: 1px solid var(--border);
    padding: 0.6rem;
    border-radius: 6px;
    color: white;
}

button {
    background: var(--accent);
    color: #0f172a;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: bold;
    cursor: pointer;
}

.workspace {
    display: flex;
    gap: 1rem;
    flex: 1;
    overflow: hidden;
}

.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.execution-tree {
    flex: 1;
}

.output-viewer {
    flex: 1.5;
    background: #0f172a;
}

h2 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.placeholder {
    color: #475569;
    font-style: italic;
}

.trace-node {
    border-left: 3px solid var(--accent);
    background: #1e293b;
    padding: 0.8rem;
    margin-bottom: 0.75rem;
    border-radius: 0 6px 6px 0;
}

.trace-node.COMPLETED {
    border-left-color: #4ade80;
}

.trace-node.RUNNING {
    border-left-color: #fbbf24;
    animation: pulse 1.5s infinite;
}

.node-meta {
    font-size: 0.75rem;
    color: #94a3b8;
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.25rem;
}

@keyframes pulse {
    50% {
        opacity: 0.6;
    }
}