:root {
    --bg: #0d1117;
    --panel: #161b22;
    --text: #c9d1d9;
    --muted: #8b949e;
    --border: #30363d;
    --primary: #58a6ff;
    --danger: #f85149;
    --success: #3fb950;
    --link: #58a6ff;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background: var(--bg);
    color: var(--text);
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Top bar */
.topbar {
    border-bottom: 1px solid var(--border);
    background: var(--panel);
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    font-size: 14px;
}

.breadcrumbs, .topbar-user {
    display: flex;
    align-items: center;
    gap: 8px;
}

.crumb-sep { color: var(--muted); }
.muted, small { color: var(--muted); }

/* Page */
.page { padding: 24px 0 48px; }

.page-header, .section-header, .form-actions, .page-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

/* Cards */
.card {
    border: 1px solid var(--border);
    background: var(--panel);
    padding: 16px;
    margin-bottom: 16px;
}

.narrow {
    max-width: 400px;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.stack > * + * { margin-top: 12px; }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td {
    text-align: left;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
th { font-weight: 600; font-size: 12px; text-transform: uppercase; color: var(--muted); }

/* Forms */
form { margin: 0; }

label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 12px;
    font-size: 13px;
    font-weight: 500;
}

input, textarea, select {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font: inherit;
}

textarea { resize: vertical; }

button, .button-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    font: inherit;
    cursor: pointer;
    text-decoration: none;
}

button:hover, .button-link:hover {
    background: var(--border);
    text-decoration: none;
}

button.danger, .danger {
    color: var(--danger);
    border-color: var(--danger);
}

.primary {
    background: #238636;
    color: #fff;
    border-color: #238636;
}

.primary:hover { background: #2ea043; }

/* Status */
.status-badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 12px;
    border: 1px solid var(--border);
}

.status-success { color: var(--success); border-color: var(--success); }
.status-failed, .status-cancelled { color: var(--danger); border-color: var(--danger); }
.status-running { color: var(--primary); border-color: var(--primary); }
.status-pending, .status-queued, .status-skipped { color: var(--muted); }

/* Code / logs */
.code-editor, .log-viewer {
    font-family: Consolas, "Courier New", monospace;
    font-size: 13px;
}

.log-viewer {
    min-height: 200px;
    max-height: 320px;
    overflow-y: auto;
    padding: 12px;
    border: 1px solid var(--border);
    background: var(--bg);
    white-space: pre-wrap;
}

/* Tabs (unified) */
.tabs { margin-bottom: 16px; }
.tab-bar { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 16px; }
.tab-btn {
    padding: 8px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--muted);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--text); border-bottom-color: var(--primary); }
.tab-panel { display: none; padding: 16px 0; }
.tab-panel.active { display: block; }

/* Grid */
.workspace-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.workspace-card { display: block; color: var(--text); }
.workspace-card:hover { text-decoration: none; border-color: var(--muted); }
.stats { display: flex; gap: 12px; color: var(--muted); font-size: 13px; }

/* Worker status */
.online { color: var(--success); }
.offline { color: var(--danger); }

/* Misc */
.plain-list { list-style: none; padding: 0; margin: 0; }
.plain-list li + li { margin-top: 8px; }

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg);
    border: 1px solid var(--border);
    overflow: hidden;
}

.progress-bar-fill { height: 100%; background: var(--primary); }

.dag-list { display: flex; flex-direction: column; gap: 8px; }
.dag-item { padding: 10px; border: 1px solid var(--border); background: var(--bg); }
.dag-title, .dag-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.inline-option { flex-direction: row; align-items: center; }
.inline-option input { width: auto; }

.builder-row { border: 1px solid var(--border); padding: 12px; margin-bottom: 8px; background: var(--bg); }
.builder-row-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }

.grid-form { display: grid; gap: 12px; }
.two-col { grid-template-columns: repeat(2, 1fr); }
.full-row { grid-column: 1 / -1; }

.alert { padding: 10px 12px; margin-bottom: 12px; border: 1px solid var(--border); }
.alert-error, .error-text { color: var(--danger); border-color: var(--danger); }

.small { font-size: 12px; }
.run-summary, .progress-meta { display: flex; justify-content: space-between; align-items: center; gap: 12px; }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.modal-overlay.open { display: flex; }

.modal, .modal-dialog {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 24px;
    width: 100%;
    max-width: 440px;
    border-radius: 8px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.modal-header h3 { margin: 0; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    padding: 0 4px;
}
.modal-close:hover { color: var(--text); }

.modal-body table { border-collapse: collapse; }
.modal-body th { text-align: left; font-size: 12px; color: var(--text-muted); padding: 6px 8px; border-bottom: 1px solid var(--border); }
.modal-body td { padding: 8px; font-size: 13px; border-bottom: 1px solid var(--border); }

.modal h2 { margin-top: 0; }

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 16px;
}

@media (max-width: 720px) {
    .two-col { grid-template-columns: 1fr; }
}

/* DAG flow (from LABS v1) */
.dag-flow { display: flex; align-items: center; gap: 0; padding: 20px 0; overflow-x: auto; }
.dag-arrow { color: var(--muted); font-size: 22px; padding: 0 6px; flex-shrink: 0; }
.dag-node { flex-shrink: 0; width: 180px; cursor: pointer; overflow: hidden; border-width: 1.5px; border-style: solid; }
.dag-node:hover { opacity: 0.85; }
.dag-node-name { padding: 10px 12px 6px; font-size: 13px; font-weight: 600; }
.dag-node-status { padding: 4px 12px 8px; font-size: 12px; display: flex; align-items: center; gap: 6px; border-top: 1px solid rgba(255,255,255,0.06); }
.dag-node-status .timer { font-variant-numeric: tabular-nums; margin-left: auto; }

.dag-node.pending   { background: #1e1e3a; border-color: #555; }
.dag-node.queued    { background: #2a2a1a; border-color: #b08800; }
.dag-node.running   { background: #1a2a40; border-color: var(--primary); }
.dag-node.success   { background: #1a2a1e; border-color: var(--success); }
.dag-node.failed    { background: #2a1a1a; border-color: var(--danger); }
.dag-node.skipped   { background: #1e1e3a; border-color: #555; opacity: 0.5; }
.dag-node.cancelled { background: #2a2010; border-color: #e3831e; }

.status-dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.status-dot.pending  { background: #555; }
.status-dot.queued   { background: #b08800; }
.status-dot.running  { background: var(--primary); }
.status-dot.success  { background: var(--success); }
.status-dot.failed   { background: var(--danger); }
.status-dot.skipped  { background: #555; }
.status-dot.cancelled { background: #e3831e; }