:root {
  --ink: #e8edf0;
  --muted: #8d9aa2;
  --faint: #5d6970;
  --canvas: #0b1115;
  --surface: #121a1f;
  --surface-2: #172228;
  --line: #27343b;
  --teal: #46d0bc;
  --teal-dark: #173b3a;
  --amber: #f0b86f;
  --red: #ee7b78;
  --white: #f7f9f9;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 14px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
button, input, select { font: inherit; }
button { cursor: pointer; }
.topbar { height: 76px; border-bottom: 1px solid var(--line); display: flex; align-items: center; padding: 0 42px; gap: 12px; background: #0e161a; }
.brand-mark { width: 34px; height: 34px; border: 1px solid var(--teal); color: var(--teal); display: grid; place-items: center; font-family: Georgia, serif; font-size: 23px; }
.brand-name { font-size: 15px; letter-spacing: .02em; font-weight: 650; }
.brand-subtitle { color: var(--muted); font-size: 11px; letter-spacing: .09em; text-transform: uppercase; }
.topbar-meta { margin-left: auto; color: var(--muted); font-size: 12px; display: flex; align-items: center; gap: 7px; }
.status-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 3px rgba(70,208,188,.12); }
.shell { max-width: 1440px; margin: 0 auto; padding: 34px 42px 68px; }
.hero-line { display: flex; align-items: end; justify-content: space-between; gap: 30px; padding-bottom: 28px; }
.eyebrow, .section-kicker { color: var(--teal); font-size: 10px; letter-spacing: .18em; font-weight: 700; }
h1, h2, p { margin: 0; }
h1 { margin-top: 7px; font-size: clamp(27px, 3vw, 40px); letter-spacing: -.03em; line-height: 1.1; color: var(--white); }
h2 { margin-top: 4px; font-size: 18px; letter-spacing: -.01em; }
.hero-line p { margin-top: 11px; color: var(--muted); }
.runtime-card { min-width: 310px; border: 1px solid var(--line); background: var(--surface); padding: 14px 16px; display: grid; gap: 4px; }
.runtime-label { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.runtime-card code { color: var(--amber); font-size: 11px; overflow-wrap: anywhere; }
.workspace-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr); gap: 18px; align-items: start; }
.panel { border: 1px solid var(--line); background: var(--surface); }
.controls-panel { padding: 25px 26px 22px; }
.side-column { display: grid; gap: 18px; }
.status-panel, .summary-panel, .plots-panel { padding: 21px 22px; }
.panel-heading { display: flex; justify-content: space-between; align-items: start; gap: 15px; margin-bottom: 21px; }
.panel-heading.compact { margin-bottom: 16px; }
.ghost-button, .secondary-button { border: 1px solid var(--line); color: var(--muted); background: transparent; padding: 8px 11px; }
.ghost-button:hover, .secondary-button:hover { border-color: var(--teal); color: var(--ink); }
.ghost-button span { color: var(--teal); margin-right: 4px; }
.field-stack { display: grid; gap: 12px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; position: relative; }
label > span, label small { font-size: 10px; color: var(--faint); margin-left: 4px; font-weight: 400; }
.default-value { color: #70817f; }
.tip { position: absolute; right: 0; top: 0; display: inline-grid; place-items: center; width: 15px; height: 15px; margin-left: 4px; border: 1px solid var(--faint); border-radius: 50%; color: var(--muted); font: 10px/1 Georgia, serif; cursor: help; vertical-align: middle; }
.tip::after { content: attr(title); position: absolute; z-index: 20; left: 0; bottom: calc(100% + 8px); width: 230px; padding: 9px 10px; border: 1px solid var(--line); background: #202c31; color: var(--ink); box-shadow: 0 8px 20px rgba(0,0,0,.28); font: 11px/1.45 Inter, ui-sans-serif, system-ui, sans-serif; opacity: 0; pointer-events: none; transform: translateY(3px); transition: opacity .12s ease, transform .12s ease; }
.tip:hover::after, .tip:focus::after { opacity: 1; transform: translateY(0); }
.toggle .tip { position: static; flex: 0 0 auto; }
.file-picker { border: 1px dashed var(--line); padding: 9px 10px; background: #10191d; }
.file-picker input[type="file"] { min-height: 32px; padding: 5px 0; border: 0; background: transparent; }
.file-picker:hover { border-color: var(--teal); }
input, select { width: 100%; min-height: 38px; border: 1px solid var(--line); background: #0d1519; color: var(--ink); padding: 8px 10px; outline: none; border-radius: 2px; }
input:focus, select:focus { border-color: var(--teal); box-shadow: 0 0 0 2px rgba(70,208,188,.1); }
.divider { height: 1px; background: var(--line); margin: 23px 0 19px; }
.param-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px 14px; margin-top: 12px; }
.toggle-row { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 20px; }
.toggle { display: flex; align-items: center; grid-template-columns: none; gap: 8px; color: var(--muted); cursor: pointer; }
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-ui { width: 30px; height: 16px; border: 1px solid var(--faint); background: #0d1519; position: relative; transition: .15s ease; }
.toggle-ui::after { content: ""; width: 10px; height: 10px; background: var(--faint); position: absolute; left: 2px; top: 2px; transition: .15s ease; }
.toggle input:checked + .toggle-ui { border-color: var(--teal); background: var(--teal-dark); }
.toggle input:checked + .toggle-ui::after { left: 16px; background: var(--teal); }
.action-row { display: flex; gap: 10px; align-items: center; margin-top: 24px; }
.primary-button { border: 1px solid var(--teal); color: #071a18; background: var(--teal); font-weight: 700; padding: 11px 17px; }
.primary-button:hover { background: #6fe2d1; }
.primary-button:disabled { opacity: .55; cursor: wait; }
.button-symbol { margin-right: 5px; }
.command-preview { margin-top: 17px; background: #0d1519; border-left: 2px solid var(--teal); padding: 9px 11px; display: grid; gap: 5px; }
.command-preview span { color: var(--faint); font-size: 9px; letter-spacing: .15em; }
.command-preview code { color: #b7c8c6; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 11px; }
.state-pill { padding: 5px 9px; font-size: 11px; border: 1px solid var(--line); color: var(--muted); }
.state-pill.running { color: var(--amber); border-color: rgba(240,184,111,.45); }
.state-pill.completed { color: var(--teal); border-color: rgba(70,208,188,.45); }
.state-pill.failed { color: var(--red); border-color: rgba(238,123,120,.45); }
.status-metrics { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 12px 0; margin-bottom: 13px; }
.status-metrics div { padding: 0 10px; border-right: 1px solid var(--line); min-width: 0; }
.status-metrics div:first-child { padding-left: 0; }
.status-metrics div:last-child { border: 0; }
.status-metrics span, .metric-cards span, .detail-list dt { display: block; color: var(--faint); font-size: 10px; text-transform: uppercase; letter-spacing: .1em; }
.status-metrics strong { display: block; margin-top: 3px; font-size: 13px; overflow: hidden; text-overflow: ellipsis; }
.log-box { height: 275px; overflow: auto; background: #0b1115; padding: 11px 12px; font: 11px/1.7 "SFMono-Regular", Consolas, monospace; color: #9eb0ad; }
.log-empty, .summary-empty { color: var(--faint); }
.log-line { white-space: pre-wrap; overflow-wrap: anywhere; }
.summary-content.hidden { display: none; }
.result-badge { display: inline-block; border: 1px solid var(--teal); color: var(--teal); padding: 5px 9px; font-size: 11px; margin-bottom: 15px; }
.result-badge.unstable { border-color: var(--amber); color: var(--amber); }
.result-badge.failed { border-color: var(--red); color: var(--red); }
.download-button { display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--line); color: var(--ink); padding: 5px 9px; font-size: 11px; text-decoration: none; margin: 0 0 15px 6px; }
.download-button:hover { border-color: var(--teal); color: var(--teal); }
.download-button span { color: var(--teal); font-size: 16px; line-height: 10px; }
.hidden { display: none !important; }
.metric-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.metric-cards > div { background: var(--surface-2); padding: 10px; min-width: 0; }
.metric-cards strong { display: block; margin-top: 5px; font-size: 18px; color: var(--white); overflow: hidden; text-overflow: ellipsis; }
.detail-list { display: grid; grid-template-columns: 1fr 1fr; gap: 11px 15px; margin: 17px 0 0; }
.detail-list dd { margin: 3px 0 0; color: var(--ink); font-size: 12px; }
.plots-panel { margin-top: 18px; }
.plot-note { color: var(--muted); font-size: 11px; }
.plot-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 14px; }
.plot-frame { min-height: 260px; background: #0b1115; border: 1px solid var(--line); display: grid; place-items: center; overflow: hidden; }
.plot-frame img { display: block; width: 100%; height: auto; }
.plot-placeholder { padding: 30px; text-align: center; color: var(--faint); font-size: 12px; }
.batch-panel { margin-top: 18px; padding: 21px 22px; }
.batch-help { color: var(--muted); font-size: 12px; margin: -8px 0 17px; }
.batch-input-grid { display: grid; grid-template-columns: 1fr 1fr 1.2fr; gap: 13px; }
.batch-action-row { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; margin-top: 17px; }
.batch-progress { color: var(--muted); font-size: 12px; }
.batch-list { display: grid; gap: 10px; margin-top: 18px; }
.batch-empty { color: var(--faint); font-size: 12px; padding: 15px 0 2px; }
.batch-item { border: 1px solid var(--line); background: #0d1519; padding: 12px; display: grid; grid-template-columns: minmax(140px, 1fr) auto; gap: 13px; align-items: start; }
.batch-item-head { display: flex; gap: 9px; align-items: center; min-width: 0; }
.batch-item-name { color: var(--ink); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.batch-item-status { color: var(--muted); font-size: 10px; border: 1px solid var(--line); padding: 3px 7px; white-space: nowrap; }
.batch-item-status.completed { color: var(--teal); border-color: rgba(70,208,188,.45); }
.batch-item-status.failed { color: var(--red); border-color: rgba(238,123,120,.45); }
.batch-item-status.running { color: var(--amber); border-color: rgba(240,184,111,.45); }
.batch-item-meta { color: var(--faint); font-size: 11px; margin-top: 8px; }
.batch-item-images { display: flex; gap: 7px; }
.batch-item-images a { display: block; width: 96px; border: 1px solid var(--line); background: #0b1115; }
.batch-item-images img { display: block; width: 100%; height: auto; }

@media (max-width: 980px) {
  .topbar { padding: 0 20px; }
  .shell { padding: 26px 20px 50px; }
  .hero-line { align-items: start; flex-direction: column; }
  .runtime-card { width: 100%; }
  .workspace-grid, .plot-grid, .batch-input-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .topbar { height: 67px; }
  .topbar-meta { display: none; }
  .controls-panel, .status-panel, .summary-panel, .plots-panel { padding: 18px 16px; }
  .param-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .status-metrics { grid-template-columns: 1fr 1fr 1fr; }
  .status-metrics strong { font-size: 11px; }
  .action-row { flex-wrap: wrap; }
  .primary-button { flex: 1; }
}