:root {
  color-scheme: light;
  --ink: #1c2430;
  --line: #d7dee8;
  --panel: #ffffff;
  --bg: #f4f6f8;
  --accent: #1f6b4a;
  --accent-ink: #ffffff;
  font-family: "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

h1, h2 { margin: 0; font-weight: 600; }

.screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.card {
  width: min(380px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  display: grid;
  gap: 12px;
}

label { display: grid; gap: 6px; font-size: 14px; }

input, button {
  font: inherit;
  border-radius: 8px;
}

input {
  border: 1px solid var(--line);
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
}

button {
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 14px;
  cursor: pointer;
}

button.ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
  border-color: transparent;
}

.error { min-height: 1.2em; color: #9b2c2c; margin: 0; }

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr;
}

header, .toggles {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

header { justify-content: space-between; }

.toggles button { min-width: 104px; }

.board {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 16px;
  padding: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 420px;
  gap: 12px;
}

.log {
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bubble {
  max-width: 85%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  white-space: pre-wrap;
}

.bubble.user { margin-left: auto; background: #e7f3ec; }
.bubble.assistant { background: #fff; }

.composer, .wa-actions { display: flex; gap: 8px; }

.composer input { flex: 1; }

.qr { width: min(240px, 100%); background: #fff; }

@media (max-width: 800px) {
  .board { grid-template-columns: 1fr; }
  .toggles { flex-wrap: wrap; }
}