:root {
  color-scheme: light;
  --cream: #f7f3eb;
  --charcoal: #3f3d3a;
  --orange: #d8794d;
  --bg: var(--cream);
  --surface: var(--cream);
  --surface-raised: var(--cream);
  --surface-soft: var(--orange);
  --border: var(--charcoal);
  --border-strong: var(--charcoal);
  --text: var(--charcoal);
  --muted: var(--charcoal);
  --muted-strong: var(--charcoal);
  --accent: var(--orange);
  --accent-ink: var(--charcoal);
  --warning: var(--orange);
  --danger: var(--orange);
  --blue: var(--orange);
  --divider: 1px solid var(--charcoal);
  font-family:
    Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    Helvetica, Arial, sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
}

body {
  min-width: 320px;
}

button {
  font: inherit;
  color: inherit;
}

button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.button {
  min-height: 34px;
  padding: 0 13px;
  border: 1px solid transparent;
  border-radius: 5px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition:
    background 120ms ease,
    border-color 120ms ease,
    color 120ms ease;
}

.button:disabled {
  cursor: wait;
  opacity: 0.55;
}

.button-quiet {
  border-color: var(--border);
  background: transparent;
  color: var(--muted-strong);
}

.button-quiet:hover:not(:disabled) {
  border-color: var(--orange);
  background: var(--charcoal);
  color: var(--cream);
}

.button-solid {
  border-color: var(--orange);
  background: var(--charcoal);
  color: var(--cream);
}

.button-solid:hover:not(:disabled) {
  border-color: var(--orange);
  background: var(--cream);
  color: var(--charcoal);
}

.workspace-shell {
  height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 410px;
  overflow: hidden;
}

.simulator-panel {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  border-right: var(--divider);
  background: var(--charcoal);
}

.eyebrow {
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.circuitjs-slot {
  min-width: 0;
  min-height: 0;
  position: relative;
  overflow: hidden;
  background: var(--charcoal);
}

#circuitjs-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: var(--charcoal);
}

.runtime-message {
  width: min(480px, calc(100% - 48px));
  margin: 18vh auto 0;
  padding: 26px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.runtime-message h2 {
  margin: 8px 0 10px;
  font-size: 22px;
}

.runtime-message p {
  color: var(--muted-strong);
  font-size: 13px;
  line-height: 1.55;
}

.runtime-message pre {
  margin: 18px 0 0;
  padding: 12px;
  overflow: auto;
  border: 1px solid var(--border);
  background: var(--charcoal);
  color: var(--cream);
  font: 12px/1.55 "SFMono-Regular", Consolas, monospace;
}

.session-panel {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr);
  background: var(--surface);
}

.section-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.session-body {
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  grid-template-areas:
    "pending"
    "panels";
  overflow: hidden;
}

.pending-section {
  grid-area: pending;
}

.pending-section {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.pending-section[hidden] {
  display: none;
}

.section-label-row h3 {
  margin: 0;
  color: var(--text);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-label-row > span {
  color: var(--muted);
  font: 10px "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.pending-section {
  background: var(--cream);
}

.pending-section .section-label-row h3,
.pending-section .section-label-row > span {
  color: var(--charcoal);
}

.pending-card {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--orange);
  background: var(--cream);
}

.pending-label {
  color: var(--charcoal);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.pending-card p {
  margin: 8px 0 13px;
  color: var(--text);
  font-size: 12px;
  line-height: 1.5;
}

.approval-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.panel-stack {
  grid-area: panels;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  overscroll-behavior: contain;
  background: var(--cream);
  scrollbar-color: var(--charcoal) transparent;
}

.bench {
  flex: 0 0 auto;
  min-height: 0;
  border-bottom: var(--divider);
}

.bench[open] {
  flex: 1 1 auto;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.bench summary {
  min-height: 43px;
  padding: 14px 18px;
  color: var(--charcoal);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.bench summary::marker {
  color: var(--orange);
}

.bench-count {
  float: right;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.bench-content {
  min-height: 0;
  padding: 0 18px 12px 35px;
  overflow-y: auto;
  scrollbar-color: var(--charcoal) transparent;
}

.bench-item {
  padding: 11px 0 12px;
  border-top: 1px solid var(--charcoal);
}

.bench-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.66;
}

.bench-item h4 {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 6px 0 3px;
  font-size: 12px;
  line-height: 1.4;
}

.bench-item p,
.bench-empty {
  margin: 0;
  font-size: 10px;
  line-height: 1.55;
  opacity: 0.72;
}

.bench-secondary {
  margin-top: 5px !important;
}

.bench-value {
  flex: 0 0 auto;
  color: var(--charcoal);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 10px;
  font-weight: 750;
}

.bench-empty {
  padding: 4px 0 15px;
}

.work-log-empty {
  padding-top: 5px;
}

.session-feed {
  min-height: 0;
  margin: 0;
  padding: 14px 20px 18px 18px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: var(--border-strong) transparent;
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0,
    var(--charcoal) 14px,
    var(--charcoal) calc(100% - 16px),
    transparent 100%
  );
  mask-image: linear-gradient(
    to bottom,
    transparent 0,
    var(--charcoal) 14px,
    var(--charcoal) calc(100% - 16px),
    transparent 100%
  );
}

.feed-event {
  display: grid;
  grid-template-columns: 17px minmax(0, 1fr);
  gap: 9px;
  min-width: 0;
}

.feed-rail {
  display: flex;
  justify-content: center;
  position: relative;
}

.feed-rail::after {
  content: "";
  width: 1px;
  position: absolute;
  top: 15px;
  bottom: -1px;
  background: var(--border);
}

.feed-event:last-child .feed-rail::after {
  display: none;
}

.feed-rail span {
  width: 7px;
  height: 7px;
  margin-top: 8px;
  border: 2px solid var(--surface);
  border-radius: 50%;
  background: var(--border-strong);
  box-shadow: 0 0 0 1px var(--border-strong);
  position: relative;
  z-index: 1;
}

.feed-event.actor-agent .feed-rail span {
  background: var(--blue);
  box-shadow: 0 0 0 1px var(--blue);
}

.feed-event.actor-human .feed-rail span {
  background: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.feed-body {
  min-width: 0;
  padding: 3px 0 17px;
}

.feed-meta {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

.feed-actor {
  color: var(--muted-strong);
  font-weight: 800;
}

.feed-kind {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.feed-meta time {
  margin-left: auto;
  font-family: "SFMono-Regular", Consolas, monospace;
  letter-spacing: 0;
}

.feed-body h4 {
  margin: 6px 0 3px;
  overflow-wrap: anywhere;
  font-size: 13px;
  font-weight: 670;
  line-height: 1.35;
}

.feed-body p {
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.toast {
  max-width: min(420px, calc(100vw - 32px));
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 20;
  padding: 10px 13px;
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  background: var(--charcoal);
  color: var(--cream);
  font-size: 12px;
  font-weight: 700;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 140ms ease,
    transform 140ms ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.toast.is-error {
  border-color: var(--danger);
  background: var(--cream);
  color: var(--charcoal);
}

@media (max-width: 1080px) {
  .workspace-shell {
    grid-template-columns: minmax(0, 1fr) 360px;
  }

}

@media (max-width: 820px) {
  html,
  body {
    overflow: auto;
  }

  .workspace-shell {
    height: auto;
    display: block;
    overflow: visible;
  }

  .simulator-panel {
    height: 65vh;
    min-height: 500px;
    grid-template-rows: minmax(0, 1fr);
    border-right: 0;
    border-bottom: var(--divider);
  }

  .session-panel {
    height: 70vh;
    min-height: 580px;
  }
}