:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --bg: #f7f5f2;
  --panel: #ffffff;
  --text: #1d1d1f;
  --muted: #686868;
  --line: #dedbd5;
  --accent: #d84072;
  --accent-strong: #b92b5b;
  --soft: #fff0f5;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #ffffff;
  cursor: pointer;
  font-weight: 700;
  padding: 10px 14px;
}

button:hover {
  background: var(--accent-strong);
}

button.secondary {
  background: #ece8e1;
  color: var(--text);
}

button.danger {
  background: #3b3135;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  padding: 10px 12px;
}

textarea {
  resize: vertical;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 28px;
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0;
  font-size: 28px;
}

h2 {
  margin-bottom: 14px;
  font-size: 18px;
}

.endpoint {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

code {
  border-radius: 8px;
  background: var(--soft);
  color: var(--accent-strong);
  padding: 7px 9px;
}

.workspace {
  display: grid;
  grid-template-columns: 280px minmax(360px, 1fr) 320px;
  gap: 18px;
  padding: 18px;
}

.flow-list,
.editor,
.tester {
  min-height: calc(100vh - 105px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  padding: 16px;
}

.list-header,
.steps-header,
.queue-header,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.flow-card {
  width: 100%;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  text-align: left;
}

.flow-card.active {
  border-color: var(--accent);
  background: var(--soft);
}

.flow-card strong,
.flow-card span {
  display: block;
}

.flow-card span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.form-row {
  margin-bottom: 16px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.three-cols {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.toggle {
  align-content: end;
  grid-template-columns: auto 1fr;
}

.toggle input {
  width: auto;
}

.steps {
  display: grid;
  gap: 12px;
  margin: 14px 0 18px;
}

.step {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf8;
  padding: 12px;
}

.step-top {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.empty-state {
  display: grid;
  min-height: 60vh;
  place-content: center;
  text-align: center;
}

.empty-state p {
  color: var(--muted);
}

.hidden {
  display: none;
}

.tester {
  display: grid;
  align-content: start;
  gap: 14px;
}

pre {
  overflow: auto;
  min-height: 130px;
  border-radius: 8px;
  background: #1d1d1f;
  color: #fff8ed;
  padding: 14px;
  white-space: pre-wrap;
}

.reply-queue {
  display: grid;
  gap: 10px;
}

.queue-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfaf8;
  padding: 12px;
}

.queue-item strong,
.queue-item span {
  display: block;
}

.queue-item span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
}

.queue-message {
  margin: 10px 0;
  border-left: 3px solid var(--accent);
  padding-left: 10px;
}

.queue-item button {
  width: 100%;
}

@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .flow-list,
  .editor,
  .tester {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .topbar,
  .split,
  .three-cols,
  .steps-header,
  .queue-header,
  .actions {
    display: grid;
  }

  .workspace {
    padding: 12px;
  }
}