:root {
  color-scheme: dark;
  --canvas: #0f172a;
  --surface: #172033;
  --surface-raised: #202c42;
  --input: #0b1220;
  --line: #34435a;
  --text: #f1f5f9;
  --muted: #b4c0d1;
  --accent: #38bdf8;
  --accent-strong: #0284c7;
  --green: #34d399;
  --amber: #fbbf24;
  --red: #fb7185;
  --radius: 10px;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  display: flex;
  flex-direction: column;
  background: var(--canvas);
  color: var(--text);
  line-height: 1.5;
}

.app-header, .app-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem clamp(1rem, 4vw, 2.5rem);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.app-header h1 { margin: 0; font-size: 1.45rem; letter-spacing: -0.025em; }
.eyebrow { margin: 0 0 .2rem; color: var(--accent); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.connection-status { margin: 0; color: var(--muted); text-align: right; }

.layout {
  width: min(1500px, 100%);
  margin: 0 auto;
  padding: 1.25rem clamp(1rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: minmax(300px, 420px) minmax(0, 1fr);
  gap: 1.25rem;
  flex: 1;
  align-items: start;
}

.panel, .budget-panel, .result-section, .followup-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel { padding: 1.2rem; box-shadow: 0 10px 24px #02061755; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.section-heading h2 { margin: 0; font-size: 1.15rem; }
.schema-chip { padding: .2rem .5rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .75rem; }

form { display: grid; gap: .55rem; }
label { margin-top: .35rem; color: var(--muted); font-size: .82rem; font-weight: 600; }
input, select, textarea {
  width: 100%;
  min-height: 2.6rem;
  padding: .6rem .7rem;
  color: var(--text);
  background: var(--input);
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
}
input[type="file"] { padding: .42rem; }
input[type="checkbox"] { width: 1rem; min-height: 1rem; accent-color: var(--accent-strong); }
textarea { min-height: 5rem; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
button { font: inherit; }
[hidden] { display: none !important; }

.source-group { display: grid; gap: .45rem; }
.hint, .file-name { margin: 0; color: var(--muted); font-size: .78rem; }
.file-name { overflow-wrap: anywhere; }
code, .run-id code { color: #bae6fd; font-family: ui-monospace, "Cascadia Code", monospace; }
.limits-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem .75rem; margin-top: .3rem; }
.limits-grid label { display: block; min-height: 2.5em; }
.checkbox-row { display: flex; align-items: flex-start; gap: .6rem; margin: .45rem 0 0; color: var(--text); }
.checkbox-row input { flex: 0 0 auto; margin: .18rem 0 0; }
.checkbox-row span { font-size: .86rem; }

.button-row, .run-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .65rem; }
.button-row { margin-top: .5rem; }
.button {
  min-height: 2.45rem;
  padding: .52rem .85rem;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-size: .84rem;
  font-weight: 650;
}
.button:disabled { opacity: .5; cursor: not-allowed; }
.primary { background: var(--accent-strong); border-color: #0ea5e9; color: #fff; }
.primary:hover:not(:disabled) { background: #0369a1; }
.secondary { background: var(--surface-raised); border-color: var(--line); color: var(--text); }
.secondary:hover:not(:disabled) { border-color: var(--accent); }
.danger { background: #7f1d1d; border-color: #be123c; color: #fff; }
.danger:hover:not(:disabled) { background: #9f1239; }
.message { min-height: 1.5em; margin: .75rem 0 0; color: var(--green); font-size: .84rem; overflow-wrap: anywhere; }
.error-message { color: var(--red); }

.run-heading { align-items: flex-start; }
.status-badge { display: inline-flex; padding: .28rem .65rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .76rem; font-weight: 700; white-space: nowrap; }
.status-badge[data-state="running"], .status-badge[data-state="observing"] { color: #bae6fd; border-color: var(--accent-strong); }
.status-badge[data-state="waiting_for_input"], .status-badge[data-state="waiting_for_approval"] { color: var(--amber); border-color: #b45309; }
.status-badge[data-state="completed"] { color: var(--green); border-color: #059669; }
.status-badge[data-state="failed"], .status-badge[data-state="cancelled"] { color: var(--red); border-color: #be123c; }
.run-controls { justify-content: space-between; }
.run-id { margin: 0; color: var(--muted); font-size: .82rem; overflow-wrap: anywhere; }

.budget-panel { margin: .85rem 0 1rem; padding: .85rem; }
.budget-panel h3 { margin: 0 0 .4rem; font-size: .88rem; }
#budget-summary { white-space: pre-line; line-height: 1.7; }
.followup-panel { margin: .85rem 0; padding: 1rem; border-color: #b45309; }
.followup-panel h3, .result-section h3 { margin: 0 0 .65rem; font-size: .95rem; }
.followup-panel label { display: block; margin: .65rem 0 .3rem; }
.followup-reason { margin: .25rem 0 .65rem; white-space: pre-wrap; }
.content-box { max-height: 19rem; overflow: auto; margin: .6rem 0; padding: .8rem; background: var(--input); border: 1px solid var(--line); border-radius: 6px; color: #dbeafe; font: .78rem/1.55 ui-monospace, "Cascadia Code", monospace; white-space: pre-wrap; overflow-wrap: anywhere; }

.results-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(250px, .85fr); gap: .85rem; }
.result-section { min-width: 0; padding: .9rem; }
.findings-list { display: grid; gap: .65rem; }
.finding-card { padding: .75rem; background: var(--input); border: 1px solid var(--line); border-radius: 7px; }
.finding-card h4 { margin: 0 0 .3rem; font-size: .86rem; overflow-wrap: anywhere; }
.finding-card .hint { margin-bottom: .5rem; }
.metrics-list { display: grid; grid-template-columns: minmax(90px, .75fr) minmax(0, 1.25fr); gap: .22rem .6rem; margin: .45rem 0 .7rem; font-size: .77rem; }
.metrics-list dt { color: var(--muted); overflow-wrap: anywhere; }
.metrics-list dd { margin: 0; text-align: right; font-family: ui-monospace, "Cascadia Code", monospace; overflow-wrap: anywhere; }
.evidence-frame { min-height: 180px; margin: 0; display: grid; place-items: center; background: #050a13; border: 1px dashed var(--line); border-radius: 6px; overflow: hidden; }
.evidence-frame img { display: block; max-width: 100%; max-height: 360px; object-fit: contain; }
.evidence-frame figcaption { padding: .8rem; color: var(--muted); font-size: .78rem; text-align: center; overflow-wrap: anywhere; }
.report-section { margin-top: .85rem; }
.compact-heading { margin-bottom: .5rem; }
.compact-heading h3 { margin: 0; }
details { margin-top: .8rem; }
summary { color: var(--muted); cursor: pointer; }
.empty-state { margin: .2rem 0; color: var(--muted); font-size: .82rem; }
.evidence-button { margin-top: .15rem; }

.sample-actions {
  display: flex;
  gap: 0.5rem;
  margin: 0.35rem 0;
  flex-wrap: wrap;
}

.sample-btn {
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  min-height: 34px;
}

.app-footer { margin-top: auto; border-top: 1px solid var(--line); border-bottom: 0; color: var(--muted); font-size: .75rem; }

@media (max-width: 920px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 620px) {
  .app-header, .app-footer { align-items: flex-start; flex-direction: column; }
  .connection-status { text-align: left; }
  .results-grid { grid-template-columns: minmax(0, 1fr); }
  .section-heading { align-items: flex-start; }
  .status-badge { white-space: normal; }
  .button-row .button { flex: 1 1 100%; }
}

.app-lang-btn { flex: none; }

/* Use-case introduction above the workspaces. */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: 1.25rem 2rem;
  padding: 1.5rem clamp(1rem, 4vw, 2.5rem) 1.25rem;
  background: linear-gradient(135deg, #10203a 0%, #0f172a 60%);
  border-bottom: 1px solid var(--line);
}
.hero h2 { margin: 0 0 0.5rem; font-size: clamp(1.35rem, 2.6vw, 2rem); line-height: 1.2; }
.hero-lead { margin: 0; color: var(--muted); max-width: 52ch; }
.public-demo-note {
  margin: 0.75rem 0 0;
  padding: 0.45rem 0.7rem;
  border: 1px solid #a16207;
  border-radius: var(--radius);
  background: rgba(251, 191, 36, 0.12);
  color: var(--amber);
  font-size: 0.9rem;
}
.hero-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.hero-steps li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--surface);
  font-size: 0.92rem;
  color: var(--muted);
}
.hero-steps li:nth-child(2) { border-top-color: var(--amber); }
.hero-steps li:nth-child(3) { border-top-color: var(--green); }
.hero-step-label { color: var(--text); font-weight: 700; letter-spacing: 0.02em; }
.hero-reuse { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 0.9rem; }
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-steps { grid-template-columns: 1fr; }
}