:root {
  color-scheme: light;
  --bg: #f5f7f4;
  --panel: #ffffff;
  --text: #202522;
  --muted: #63706a;
  --line: #d8dfd9;
  --accent: #256f5a;
  --accent-strong: #174d3e;
  --warn: #b3261e;
  --assistant: #eef4ff;
  --user: #eaf6ee;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

.app-shell {
  width: min(920px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  grid-template-rows: auto auto auto auto 1fr auto auto;
  gap: 16px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

h1 {
  margin: 0;
  font-size: 22px;
  line-height: 1.25;
}

.topbar p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.status-badge {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--muted);
  background: var(--panel);
  font-size: 13px;
}

.status-badge.ready {
  color: var(--accent-strong);
  border-color: #9ccbbb;
  background: #eef8f3;
}

.access-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, auto) auto;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border: 1px solid #c7b36a;
  border-radius: 8px;
  background: #fff9e8;
}

.access-panel[hidden] {
  display: none;
}

.access-form[hidden],
.access-panel button[hidden] {
  display: none;
}

.access-panel[data-state="authenticated"] {
  border-color: #9ccbbb;
  background: #eef8f3;
}

.access-copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.access-copy strong {
  font-size: 14px;
}

.access-copy span {
  color: var(--muted);
  font-size: 12px;
}

.access-form {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) auto;
  gap: 8px;
}

.access-form input {
  min-width: 0;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

.access-form input:focus {
  outline: 3px solid #cce7dd;
  border-color: var(--accent);
}

.modebar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  color: var(--muted);
  font-size: 14px;
  flex-wrap: wrap;
}

.toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.state-panel {
  display: grid;
  grid-template-columns: minmax(120px, auto) minmax(120px, auto) minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.state-label {
  display: block;
  margin-bottom: 2px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.state-panel strong {
  font-size: 13px;
}

.state-facts {
  min-width: 0;
}

.state-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.state-chips span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px 8px;
  background: #f8faf8;
  color: var(--muted);
  font-size: 12px;
}

.state-chips .empty-chip {
  border-style: dashed;
}

.state-actions {
  display: flex;
  justify-content: flex-end;
}

.state-actions button {
  min-width: 76px;
}

.messages {
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
  padding: 4px 0 8px;
}

.message {
  max-width: min(720px, 92%);
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.message-meta {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.section-label {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.references {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.reference-card {
  display: block;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--accent-strong);
  background: #ffffff;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
}

.reference-title {
  font-weight: 700;
}

.reference-heading,
.reference-url {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.reference-url {
  word-break: break-all;
}

.reference-empty {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.choice-group {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.choice-button {
  width: 100%;
  min-height: 38px;
  text-align: left;
  white-space: normal;
}

.simulation-form {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.field-row {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) minmax(120px, 1.2fr) auto;
  align-items: center;
  gap: 8px;
}

.field-row span {
  color: var(--muted);
  font-size: 13px;
}

.field-row input {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}

.mini-button {
  min-width: 80px;
  min-height: 36px;
  padding: 6px 10px;
  font-size: 12px;
}

.inline-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.result-grid {
  display: grid;
  gap: 6px;
  margin-top: 8px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.result-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

.result-row span {
  color: var(--muted);
}

.warning-list {
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid #dfbf80;
  border-radius: 8px;
  background: #fff8e8;
  color: #6d4d00;
  font-size: 13px;
}

.diagnosis-panel {
  display: grid;
  gap: 10px;
  margin-top: 10px;
}

.diagnosis-badge {
  width: fit-content;
  border: 1px solid #9ccbbb;
  border-radius: 999px;
  padding: 4px 8px;
  color: var(--accent-strong);
  background: #eef8f3;
  font-size: 12px;
  font-weight: 700;
}

.diagnosis-question {
  font-weight: 700;
}

.diagnosis-freeform {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.diagnosis-freeform input {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}

.cause-list {
  display: grid;
  gap: 8px;
  margin-top: 8px;
}

.cause-card {
  display: grid;
  gap: 4px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  font-size: 13px;
}

.cause-title {
  font-weight: 700;
}

.check-order {
  margin: 8px 0 0;
  padding-left: 22px;
  font-size: 13px;
}

.fact-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.fact-chips span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 8px;
  background: #ffffff;
  color: var(--muted);
  font-size: 12px;
}

.missing-info {
  display: grid;
  gap: 8px;
  margin-top: 8px;
  padding: 10px 12px;
  border: 1px solid #dfbf80;
  border-radius: 8px;
  background: #fffaf0;
  font-size: 13px;
}

.missing-info ul {
  margin: 0;
  padding-left: 20px;
}

.debug-panel {
  margin-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

.debug-panel summary {
  cursor: pointer;
  padding-top: 8px;
}

.debug-panel pre {
  max-height: 260px;
  overflow: auto;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f7f8f7;
  white-space: pre-wrap;
}

.message.user {
  align-self: flex-end;
  background: var(--user);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant);
}

.error-box {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid #e0a39f;
  border-radius: 8px;
  background: #fff3f1;
  color: var(--warn);
}

.composer {
  display: grid;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

textarea {
  width: 100%;
  min-height: 84px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  font: inherit;
  line-height: 1.5;
  background: var(--panel);
  color: var(--text);
}

textarea:focus {
  outline: 3px solid #cce7dd;
  border-color: var(--accent);
}

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

button {
  min-width: 88px;
  min-height: 40px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 8px 14px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: var(--panel);
  color: var(--accent-strong);
}

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

@media (max-width: 620px) {
  .app-shell {
    padding: 14px;
    gap: 12px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  h1 {
    font-size: 19px;
  }

  .message {
    max-width: 100%;
  }

  .actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .state-panel {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .state-actions {
    justify-content: stretch;
  }

  .state-actions button {
    width: 100%;
  }

  .modebar {
    align-items: flex-start;
    flex-direction: column;
  }

  .access-panel,
  .access-form {
    grid-template-columns: 1fr;
  }

  .field-row {
    grid-template-columns: 1fr;
  }

  .inline-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .diagnosis-freeform {
    grid-template-columns: 1fr;
  }

  button {
    width: 100%;
  }
}