:root {
  --paper: #f6efdf;
  --paper-strong: #eadfc9;
  --ink: #201910;
  --ink-soft: #5d5142;
  --panel: rgba(255, 251, 244, 0.82);
  --line: rgba(76, 57, 32, 0.16);
  --accent: #0f766e;
  --accent-soft: rgba(15, 118, 110, 0.12);
  --accent-warm: #b45309;
  --danger: #b42318;
  --shadow: 0 20px 50px rgba(32, 25, 16, 0.12);
  --radius: 22px;
  --mono: "Iosevka Term", "SFMono-Regular", ui-monospace, monospace;
  --sans: "IBM Plex Sans", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 28rem),
    radial-gradient(circle at top right, rgba(180, 83, 9, 0.08), transparent 24rem),
    linear-gradient(180deg, #fbf6ea 0%, var(--paper) 100%);
  color: var(--ink);
  font-family: var(--sans);
}

body {
  padding: clamp(1rem, 1.8vw, 2rem);
}

body.modal-open {
  overflow: hidden;
}

.page-shell {
  width: min(100%, 2400px);
  max-width: none;
  margin: 0 auto;
}

.dashboard-shell {
  display: grid;
  gap: 1.25rem;
  align-items: start;
}

.hero {
  padding: 1rem 0 1.5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}

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

h1 {
  margin-bottom: 0.6rem;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 0.95;
}

.subtitle {
  max-width: 60rem;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.panel {
  min-width: 0;
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem;
}

.flow-panel {
  display: grid;
  gap: 1rem;
  grid-template-rows: auto minmax(0, 1fr);
  align-self: start;
  position: sticky;
  top: 1.25rem;
  max-height: calc(100vh - 2.5rem);
  overflow: hidden;
}

.input-panel {
  display: grid;
  gap: 1rem;
}

.prompt-panel {
  display: grid;
  align-content: start;
}

.input-band-grid {
  display: grid;
  grid-template-columns: minmax(0, 2.15fr) minmax(20rem, 0.95fr);
  gap: 1rem;
  align-items: start;
}

.input-band-primary,
.input-band-sidecars {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.input-band-sidecars {
  align-content: start;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(20rem, 28rem) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
}

.flow-panel-scroll {
  min-height: 0;
  overflow-y: auto;
  padding-right: 0.35rem;
  display: grid;
  gap: 1rem;
}

.input-details {
  display: grid;
  gap: 1rem;
}

.input-details[open] summary.input-summary {
  margin-bottom: 0;
}

.input-summary {
  cursor: pointer;
  list-style: none;
}

.input-summary::-webkit-details-marker {
  display: none;
}

.input-summary::marker {
  display: none;
  content: "";
}

.input-summary h2 {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.input-summary h2::after {
  content: "▶";
  display: inline-block;
  font-size: 0.65rem;
  transition: transform 0.15s;
  color: var(--ink-soft);
}

.input-details[open] .input-summary h2::after {
  transform: rotate(90deg);
}

.panel-header {
  margin-bottom: 1rem;
}

.panel-header p {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.panel-header.compact {
  margin-bottom: 0.6rem;
}

.section-heading,
.field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.section-heading {
  margin-bottom: 0.65rem;
}

.section-heading h3,
.field-label {
  margin-bottom: 0;
}

.flow-groups {
  display: grid;
  gap: 0.9rem;
}

.copy-block {
  display: grid;
  gap: 0.75rem;
  padding: 0.9rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.68);
}

.copy-body {
  max-height: 18rem;
  overflow: auto;
  padding: 1rem 1.05rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  line-height: 1.55;
}

.copy-body p:last-child,
.copy-body ul:last-child,
.copy-body ol:last-child {
  margin-bottom: 0;
}

.copy-body pre,
.copy-body code {
  font-family: var(--mono);
}

.copy-body pre {
  overflow: auto;
  padding: 0.8rem;
  border-radius: 14px;
  background: #1e1a15;
  color: #fff5df;
}

.copy-body code {
  padding: 0.08rem 0.3rem;
  border-radius: 6px;
  background: rgba(15, 118, 110, 0.08);
}

.copy-empty {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.flow-group {
  display: grid;
  gap: 0.75rem;
}

.flow-group-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.gate-card {
  display: grid;
  gap: 0.65rem;
  padding: 0.7rem;
  border-radius: 18px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.6);
}

.gate-card.selected {
  border-color: rgba(15, 118, 110, 0.4);
  background: linear-gradient(180deg, rgba(15, 118, 110, 0.12), rgba(255, 255, 255, 0.7));
}

.gate-button,
.outcome-button,
.tab-button,
.action-button {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
}

.gate-button {
  display: grid;
  gap: 0.35rem;
  align-items: start;
  text-align: left;
  border-radius: 14px;
  padding: 0.85rem 0.95rem;
  background: rgba(255, 255, 255, 0.82);
  color: inherit;
}

.gate-step {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
}

.gate-summary {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.gate-phase-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding: 0 0.95rem 0.85rem;
}

.gate-phase {
  border-radius: 999px;
  border: 1px solid rgba(156, 100, 39, 0.18);
  background: rgba(234, 223, 201, 0.5);
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.15;
  padding: 0.26rem 0.45rem;
}

.outcome-list {
  display: grid;
  gap: 0.5rem;
}

.outcome-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  border-radius: 14px;
  padding: 0.75rem 0.85rem;
  background: rgba(15, 118, 110, 0.08);
  color: var(--ink);
  text-align: left;
}

.outcome-button.selected {
  background: rgba(180, 83, 9, 0.16);
}

.outcome-arrow {
  color: var(--ink-soft);
  font-size: 0.86rem;
}

.input-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: end;
}

.field {
  display: grid;
  gap: 0.4rem;
  min-width: 0;
  flex: 1;
  font-size: 0.94rem;
}

.field span {
  font-weight: 600;
}

.field-label {
  font-weight: 600;
}

.field input,
.field textarea,
.field select,
#sample-select {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(76, 57, 32, 0.22);
  border-radius: 14px;
  padding: 0.8rem 0.85rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
  font: inherit;
}

.field textarea {
  min-height: 10rem;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.field small {
  color: var(--ink-soft);
  line-height: 1.35;
}

.action-button {
  padding: 0.82rem 1.1rem;
  border-radius: 14px;
  background: var(--ink);
  color: #fff9ef;
  white-space: nowrap;
}

.binding-fields {
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
}

.binding-fields > .field {
  align-content: start;
  padding: 0.9rem;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
}

.expand-button,
.modal-close {
  appearance: none;
  border: 1px solid rgba(15, 118, 110, 0.18);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  white-space: nowrap;
}

.expand-button {
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(15, 118, 110, 0.2), rgba(15, 118, 110, 0.08));
  color: var(--accent);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.55);
}

.expand-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.binding-fields,
.legend,
.diagnostics,
.prompt-source-tabs {
  display: grid;
  gap: 0.8rem;
}

.legend-block,
.diagnostics-block {
  display: grid;
  gap: 0.6rem;
  min-width: 0;
}

.legend,
.diagnostics {
  max-height: 18rem;
  overflow: auto;
  padding-right: 0.2rem;
}

.legend-item,
.diagnostic-item {
  display: grid;
  gap: 0.35rem;
  padding: 0.8rem 0.9rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.76);
}

.legend-item {
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.65rem;
}

.legend-swatch {
  width: 0.95rem;
  height: 0.95rem;
  border-radius: 999px;
  background: var(--legend-fill);
  border: 2px solid var(--legend-accent);
}

.diagnostic-empty {
  color: var(--ink-soft);
}

.prompt-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  margin-bottom: 1rem;
}

.prompt-interface {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.pill-interface {
  background: rgba(32, 25, 16, 0.08);
  color: var(--ink);
}

.pill-interface code {
  font-family: var(--mono);
}

.prompt-diagnostic-summary {
  display: grid;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.gate-detail {
  display: grid;
  gap: 0.65rem;
  margin: 0 0 1rem;
  padding: 0.95rem 0 0 0.25rem;
  border-top: 1px solid var(--line);
}

.gate-detail[hidden] {
  display: none;
}

.gate-detail-heading {
  margin-bottom: 0;
}

.gate-detail-list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: gate-detail;
}

.gate-detail-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  align-items: start;
  padding: 0.2rem 0.2rem 0.2rem 0.85rem;
  border-left: 3px solid rgba(115, 91, 56, 0.22);
}

.gate-detail-item.selected {
  border-left-color: var(--accent);
}

.gate-detail-copy {
  display: grid;
  gap: 0.25rem;
  min-width: 0;
}

.gate-detail-copy strong {
  color: var(--ink);
}

.gate-detail-copy p {
  margin: 0;
  color: var(--ink-soft);
}

.gate-detail-prompt {
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 0.35rem 0.65rem;
  white-space: nowrap;
}

.gate-detail-item.selected .gate-detail-prompt {
  background: var(--accent-soft);
  border-color: rgba(156, 100, 39, 0.28);
}

.prompt-diagnostic-item {
  padding: 0.75rem 0.85rem;
  border-radius: 14px;
  border: 1px solid rgba(180, 35, 24, 0.22);
  background: rgba(244, 199, 195, 0.72);
}

.prompt-diagnostic-item p {
  margin-bottom: 0;
}

.diagnostic-item[data-severity="error"],
.prompt-diagnostic-item[data-severity="error"] {
  border-color: rgba(180, 35, 24, 0.26);
  background: rgba(244, 199, 195, 0.78);
}

.diagnostic-item[data-severity="warning"],
.prompt-diagnostic-item[data-severity="warning"] {
  border-color: rgba(180, 83, 9, 0.2);
  background: rgba(252, 233, 184, 0.72);
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 700;
}

.prompt-source-tabs {
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  overflow-x: auto;
  margin-bottom: 0.85rem;
}

.tab-button {
  border-radius: 999px;
  padding: 0.45rem 0.75rem;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink-soft);
  border: 1px solid var(--line);
  white-space: nowrap;
}

.tab-button.selected {
  background: var(--ink);
  color: #fff9ef;
}

.prompt-view-shell {
  display: grid;
  gap: 0.75rem;
}

.prompt-view-toolbar {
  margin-bottom: 0;
}

.prompt-view-actions,
.prompt-view-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.prompt-view-tabs {
  padding: 0.2rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.prompt-view-button {
  appearance: none;
  border: 0;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
  white-space: nowrap;
  padding: 0.5rem 0.85rem;
  border-radius: 999px;
  color: var(--ink-soft);
  background: transparent;
}

.prompt-view-button.selected {
  background: var(--ink);
  color: #fff9ef;
}

.prompt-view-stage {
  min-width: 0;
}

.prompt-preview,
.prompt-source {
  min-height: 24rem;
  max-height: 72vh;
  overflow: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
}

.prompt-preview {
  padding: 1rem 1.1rem;
  line-height: 1.55;
}

.prompt-preview > :first-child {
  margin-top: 0;
}

.prompt-preview > :last-child {
  margin-bottom: 0;
}

.prompt-preview pre,
.prompt-preview code,
.prompt-source {
  font-family: var(--mono);
}

.prompt-preview pre {
  overflow: auto;
  padding: 0.8rem;
  border-radius: 14px;
  background: #1e1a15;
  color: #fff5df;
}

.prompt-preview code {
  padding: 0.08rem 0.3rem;
  border-radius: 6px;
  background: rgba(15, 118, 110, 0.08);
}

.prompt-tag-block {
  margin: 1rem 0;
  border-radius: 16px;
  border: 1px solid rgba(15, 118, 110, 0.18);
  background: rgba(15, 118, 110, 0.05);
  overflow: hidden;
}

.prompt-tag-label,
.prompt-tag-empty {
  padding: 0.7rem 0.95rem;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.prompt-tag-label {
  color: var(--accent);
  background: rgba(15, 118, 110, 0.1);
}

.prompt-tag-empty {
  color: var(--ink-soft);
}

.prompt-tag-block pre {
  margin: 0;
  border-radius: 0;
  border-top: 1px solid rgba(15, 118, 110, 0.14);
  border-bottom: 1px solid rgba(15, 118, 110, 0.14);
}

.prompt-source {
  margin: 0;
  padding: 1rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  line-height: 1.5;
  font-size: 0.92rem;
}

.segment {
  border-radius: 0.35rem;
}

.segment-template-text {
  background: rgba(247, 241, 223, 0.45);
}

.segment-user-input {
  background: rgba(215, 238, 242, 0.72);
}

.segment-derived-path {
  background: rgba(234, 223, 201, 0.9);
}

.segment-sidecar-overlay {
  background: rgba(245, 217, 208, 0.8);
}

.segment-missing-binding {
  background: rgba(244, 199, 195, 0.95);
  color: var(--danger);
}

.diff-block {
  margin-top: 1rem;
}

.diff-block > #diff-summary {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
}

.diff-panel {
  display: grid;
  gap: 0.25rem;
  max-height: 18rem;
  overflow: auto;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  padding: 0.8rem;
}

.diff-empty {
  color: var(--ink-soft);
}

.diff-line {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0.75rem;
  align-items: start;
  border-radius: 10px;
  padding: 0.35rem 0.45rem;
}

.diff-line code {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: var(--mono);
}

.diff-context {
  background: rgba(247, 241, 223, 0.42);
}

.diff-added {
  background: rgba(215, 238, 242, 0.82);
}

.diff-removed {
  background: rgba(245, 217, 208, 0.82);
}

.diff-marker {
  font-weight: 700;
  color: var(--ink-soft);
}

.modal-shell {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.modal-shell[hidden] {
  display: none;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(24, 18, 13, 0.48);
  backdrop-filter: blur(8px);
}

.modal-card {
  position: relative;
  width: min(1120px, 100%);
  max-height: calc(100vh - 3rem);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid rgba(76, 57, 32, 0.2);
  background: rgba(255, 251, 244, 0.98);
  box-shadow: 0 35px 110px rgba(24, 18, 13, 0.28);
}

.modal-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 251, 244, 0.98), rgba(246, 239, 223, 0.92));
}

.modal-header-copy {
  min-width: 0;
}

.modal-eyebrow {
  margin: 0 0 0.3rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.76rem;
  font-weight: 700;
}

.modal-description {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
}

.modal-close {
  padding: 0.62rem 0.95rem;
  border-radius: 999px;
  background: rgba(32, 25, 16, 0.94);
  color: #fff9ef;
}

.modal-body {
  overflow: auto;
  padding: 1.25rem;
  background:
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.08), transparent 22rem),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(246, 239, 223, 0.86));
}

.modal-textarea {
  width: 100%;
  min-height: min(70vh, 34rem);
  border: 1px solid rgba(76, 57, 32, 0.2);
  border-radius: 18px;
  padding: 1rem 1.05rem;
  background: rgba(255, 255, 255, 0.96);
  color: var(--ink);
  font: inherit;
  font-family: var(--mono);
  font-size: 0.94rem;
  line-height: 1.55;
  resize: vertical;
}

.modal-markdown,
.modal-copy,
.modal-source,
.modal-diff {
  min-height: min(70vh, 30rem);
  max-height: none;
}

.modal-diff,
.modal-source,
.modal-markdown,
.modal-copy {
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

@media (min-width: 1800px) {
  .page-shell {
    width: min(100%, 2800px);
  }

  .input-band-grid {
    grid-template-columns: minmax(0, 2.35fr) minmax(22rem, 0.92fr);
  }

  .workspace-grid {
    grid-template-columns: minmax(22rem, 32rem) minmax(0, 1fr);
  }

  .binding-fields {
    grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  }
}

@media (max-width: 1200px) {
  .input-band-grid,
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .flow-panel {
    position: static;
    max-height: none;
  }

  .flow-panel-scroll {
    overflow: visible;
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  body {
    padding: 1rem;
  }

  .modal-shell {
    padding: 0.75rem;
  }

  .modal-card {
    max-height: calc(100vh - 1.5rem);
    border-radius: 22px;
  }

  .modal-header {
    flex-direction: column;
  }

  .input-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .binding-fields {
    grid-template-columns: 1fr;
  }

  .panel {
    padding: 1rem;
    border-radius: 18px;
  }

  .prompt-preview,
  .prompt-source {
    max-height: none;
    min-height: 18rem;
  }

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

  .gate-detail-prompt {
    justify-self: start;
    white-space: normal;
    text-align: left;
  }

  .copy-body {
    max-height: none;
  }
}