:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --surface: #ffffff;
  --surface-2: #eef4f1;
  --ink: #18211f;
  --muted: #65716d;
  --line: #d8dfda;
  --teal: #167a78;
  --teal-dark: #0d5454;
  --green: #6b944c;
  --amber: #c48622;
  --rose: #b14f4b;
  --blue: #355c8c;
  --shadow: 0 20px 60px rgba(31, 43, 38, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

button,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(216, 223, 218, 0.86);
  background: rgba(247, 248, 245, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--teal);
  color: white;
  font-size: 0.78rem;
}

.topnav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.topnav a {
  color: var(--muted);
  padding: 9px 10px;
  text-decoration: none;
  font-size: 0.93rem;
}

.topnav a:hover {
  color: var(--teal-dark);
}

.workspace {
  padding: clamp(24px, 4vw, 56px);
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 1.05fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: stretch;
  max-width: 1280px;
  margin: 0 auto;
}

.input-pane,
.visual-pane,
.panel,
.formula-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.input-pane {
  padding: clamp(22px, 3vw, 34px);
}

.section-kicker,
.eyebrow {
  margin: 0 0 8px;
  color: var(--teal-dark);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(2.15rem, 4.3vw, 4.5rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.2rem, 2vw, 1.75rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.03rem;
}

.field-label,
.select-wrap span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.dataset-upload {
  margin-top: 16px;
}

.file-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

input[type="file"] {
  max-width: 100%;
  padding: 10px;
  border: 1px solid #cbd5cf;
  border-radius: var(--radius);
  background: #fbfcfb;
  color: var(--ink);
}

.helper-text {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

textarea {
  display: block;
  width: 100%;
  min-height: 178px;
  resize: vertical;
  padding: 16px;
  border: 1px solid #cbd5cf;
  border-radius: var(--radius);
  background: #fbfcfb;
  color: var(--ink);
  line-height: 1.55;
  outline: none;
}

textarea:focus,
select:focus,
button:focus-visible {
  outline: 3px solid rgba(22, 122, 120, 0.24);
  outline-offset: 2px;
}

.control-row,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
  margin-top: 16px;
}

.select-wrap {
  flex: 1 1 220px;
}

select {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid #cbd5cf;
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
}

.segmented {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(96px, 1fr));
  min-height: 44px;
  overflow: hidden;
  border: 1px solid #cbd5cf;
  border-radius: var(--radius);
  background: white;
}

.segment {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-weight: 800;
}

.segment.active {
  background: var(--teal);
  color: white;
}

.primary-action,
.icon-action {
  min-height: 44px;
  border-radius: var(--radius);
  font-weight: 800;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  flex: 1 1 220px;
  padding: 0 18px;
  border: 1px solid var(--teal-dark);
  background: var(--teal);
  color: white;
}

.primary-action span {
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.icon-action {
  padding: 0 14px;
  border: 1px solid #cbd5cf;
  background: #fff;
  color: var(--ink);
}

.icon-action:hover,
.primary-action:hover {
  transform: translateY(-1px);
}

.visual-pane {
  position: relative;
  min-height: 460px;
  overflow: hidden;
  background: #101b19;
}

.visual-pane img {
  width: 100%;
  height: 100%;
  min-height: 460px;
  object-fit: cover;
  display: block;
}

.signal-strip {
  position: absolute;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.signal-strip span,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: #17302d;
  font-size: 0.82rem;
  font-weight: 800;
}

.status-pill.pill-block {
  background: rgba(177, 79, 75, 0.14);
  color: var(--rose);
}

.output-band,
.dataset-band,
.formula-band,
.knowledge-band,
.ai-band,
.code-band,
.agent-band {
  padding: clamp(22px, 4vw, 52px) clamp(18px, 4vw, 56px);
}

.output-band,
.code-band {
  background: #edf2ef;
}

.dataset-band {
  background: #f7f8f5;
}

.output-grid,
.dataset-grid,
.formula-grid,
.code-layout,
.agent-layout {
  max-width: 1280px;
  margin: 0 auto;
}

.dataset-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.dataset-card dl {
  display: grid;
  gap: 8px;
  margin: 0;
}

.dataset-card dt {
  color: var(--teal-dark);
  font-weight: 800;
}

.dataset-card dd {
  margin: 0 0 6px;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.dataset-card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.45;
}

.dataset-card.wide {
  grid-column: 1 / -1;
}

.column-table {
  display: grid;
  gap: 8px;
}

.column-table div {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) repeat(3, minmax(90px, auto));
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfb;
}

.column-table span {
  color: var(--muted);
  font-size: 0.88rem;
}

.output-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(260px, 0.75fr) minmax(260px, 0.8fr);
  gap: 16px;
  align-items: stretch;
}

.panel,
.formula-card {
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-header.tight {
  margin-bottom: 14px;
}

.panel-header.with-actions {
  align-items: center;
}

.blocking-band {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 14px;
  border: 1px solid rgba(177, 79, 75, 0.35);
  border-radius: var(--radius);
  background: rgba(177, 79, 75, 0.08);
}

.blocking-band[hidden] {
  display: none;
}

.blocking-band h3 {
  margin: 0;
  color: var(--rose);
  font-size: 0.95rem;
}

.blocking-band ul {
  margin: 0;
  padding-left: 18px;
  color: var(--ink);
  line-height: 1.45;
}

.blocking-band strong {
  color: var(--rose);
}

.summary-list {
  display: grid;
  gap: 12px;
}

.summary-item {
  display: grid;
  grid-template-columns: 138px minmax(0, 1fr);
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfb;
}

.summary-item strong {
  color: var(--teal-dark);
  font-size: 0.88rem;
}

.summary-item span {
  color: var(--ink);
  line-height: 1.45;
}

.compact-list,
.model-path {
  margin: 0;
  padding-left: 20px;
  color: var(--ink);
  line-height: 1.5;
}

.compact-list li,
.model-path li {
  margin-bottom: 10px;
}

.section-heading {
  max-width: 1280px;
  margin: 0 auto 18px;
}

.formula-grid,
.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.formula-card,
.knowledge-card {
  min-height: 214px;
  box-shadow: none;
}

.formula-card .tag {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 5px 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 800;
}

.formula {
  overflow-x: auto;
  margin: 12px 0;
  padding: 12px;
  border-radius: var(--radius);
  background: #17211f;
  color: #f3f8f4;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.5;
}

.formula-card p {
  color: var(--muted);
  line-height: 1.48;
}

.knowledge-band {
  background: #f4f6f2;
}

.ai-band {
  background: #edf2ef;
}

.knowledge-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.knowledge-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px;
}

.knowledge-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.knowledge-meta span {
  display: inline-flex;
  min-height: 25px;
  align-items: center;
  padding: 0 8px;
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--teal-dark);
  font-size: 0.74rem;
  font-weight: 800;
  text-transform: uppercase;
}

.knowledge-card p,
.knowledge-card dd {
  color: var(--muted);
  line-height: 1.45;
}

.knowledge-card dl {
  display: grid;
  gap: 6px;
  margin: 0;
}

.knowledge-card dt {
  color: var(--ink);
  font-weight: 800;
}

.knowledge-card dd {
  margin: 0;
}

.knowledge-formula {
  overflow-x: auto;
  padding: 10px;
  border-radius: var(--radius);
  background: #17211f;
  color: #f3f8f4;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
  line-height: 1.4;
}

.knowledge-card a {
  margin-top: auto;
  color: var(--teal-dark);
  font-weight: 800;
  text-decoration: none;
}

.knowledge-card a:hover {
  text-decoration: underline;
}

.ai-panel {
  max-width: 1280px;
  margin: 0 auto;
}

.ai-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

.ai-header strong {
  color: var(--teal-dark);
}

.ai-header span {
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.84rem;
}

.empty-state {
  margin: 0;
  color: var(--muted);
}

.ai-summary {
  max-width: 960px;
  color: var(--ink);
  line-height: 1.55;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.ai-grid section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfb;
  padding: 14px;
}

.ai-grid h3 {
  color: var(--teal-dark);
  font-size: 0.94rem;
}

.ai-grid ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.45;
}

.ai-grid li {
  margin-bottom: 8px;
}

.code-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: 16px;
}

pre {
  overflow: auto;
  max-height: 520px;
  margin: 0;
  padding: 16px;
  border-radius: var(--radius);
  background: #101917;
  color: #edf8f2;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
  line-height: 1.55;
}

code {
  font-family: inherit;
}

.agent-layout {
  display: grid;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 20px clamp(18px, 4vw, 56px);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 1020px) {
  .workspace-grid,
  .output-grid,
  .dataset-grid,
  .code-layout {
    grid-template-columns: 1fr;
  }

  .column-table div {
    grid-template-columns: 1fr;
  }

  .formula-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .knowledge-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .ai-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .topnav {
    justify-content: flex-start;
  }

  h1 {
    font-size: 2.25rem;
  }

  .formula-grid {
    grid-template-columns: 1fr;
  }

  .knowledge-grid {
    grid-template-columns: 1fr;
  }

  .ai-grid {
    grid-template-columns: 1fr;
  }

  .summary-item {
    grid-template-columns: 1fr;
  }

  .visual-pane,
  .visual-pane img {
    min-height: 320px;
  }
}