:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f6f8;
  color: #17201a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 5px;
  color: #28644a;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1;
}

h2 {
  font-size: 1.05rem;
}

.grid {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 16px;
}

.full-width {
  grid-column: 1 / -1;
}

.stack {
  display: grid;
  gap: 16px;
}

.panel {
  background: #ffffff;
  border: 1px solid #d9dee3;
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 14px 38px rgba(23, 32, 26, 0.08);
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: #3f4b44;
  font-size: 0.92rem;
  font-weight: 650;
}

input,
textarea {
  width: 100%;
  border: 1px solid #cbd2c5;
  border-radius: 6px;
  padding: 10px 11px;
  background: #fbfcf8;
  color: #17201a;
}

textarea {
  resize: vertical;
}

button {
  min-height: 40px;
  border: 0;
  border-radius: 6px;
  padding: 0 14px;
  background: #1d7f55;
  color: #ffffff;
  font-weight: 750;
  cursor: pointer;
}

button:hover {
  background: #176b47;
}

.result,
.event pre {
  overflow: auto;
  border-radius: 6px;
  background: #17201a;
  color: #d8ffe8;
  font-size: 0.82rem;
  line-height: 1.45;
}

.result {
  min-height: 88px;
  margin: 0;
  padding: 12px;
}

.events {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.event {
  border: 1px solid #d9dee3;
  border-radius: 8px;
  padding: 12px;
}

.event span {
  display: block;
  margin-top: 4px;
  color: #647068;
  font-size: 0.8rem;
}

.event pre {
  max-height: 260px;
  margin: 10px 0 0;
  padding: 10px;
}

.muted {
  color: #647068;
}

.conversation-layout {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1fr;
  gap: 14px;
  margin-top: 14px;
  min-height: 520px;
}

.conversation-list {
  display: grid;
  align-content: start;
  gap: 8px;
  max-height: 620px;
  overflow: auto;
}

.conversation {
  display: grid;
  gap: 4px;
  width: 100%;
  min-height: 74px;
  border: 1px solid #d9dee3;
  border-radius: 8px;
  padding: 10px;
  background: #fbfcf8;
  color: #17201a;
  text-align: left;
}

.conversation:hover,
.conversation.selected {
  border-color: #1d7f55;
  background: #eff8f2;
}

.conversation span,
.conversation small {
  overflow: hidden;
  color: #647068;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation small {
  font-size: 0.78rem;
}

.message-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 620px;
  overflow: auto;
  border: 1px solid #d9dee3;
  border-radius: 8px;
  padding: 14px;
  background: #f7f9f5;
}

.bubble {
  width: min(78%, 560px);
  border: 1px solid #d9dee3;
  border-radius: 8px;
  padding: 10px 12px;
  background: #ffffff;
}

.bubble.outbound {
  align-self: flex-end;
  border-color: #aed8be;
  background: #e8f6ed;
}

.bubble.inbound {
  align-self: flex-start;
}

.bubble p {
  margin: 0;
  white-space: pre-wrap;
}

.bubble span {
  display: block;
  margin-top: 6px;
  color: #647068;
  font-size: 0.78rem;
}

@media (max-width: 760px) {
  .toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .conversation-layout {
    grid-template-columns: 1fr;
  }

  .bubble {
    width: 100%;
  }
}