:root {
  --bg: #f3f6f7;
  --panel: #ffffff;
  --line: #d8e1e6;
  --ink: #172026;
  --muted: #65737d;
  --green: #007a4d;
  --green-dark: #075c3f;
  --blue: #245c73;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 28px;
  border-bottom: 1px solid var(--line);
  background: #fff;
}

h1, h2, p { margin: 0; }
h1 { font-size: 24px; }
.topbar p, .muted { color: var(--muted); margin-top: 4px; }

.status {
  align-self: center;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fafb;
  color: var(--muted);
}

.layout {
  width: min(1180px, calc(100% - 32px));
  margin: 20px auto 40px;
}

.query, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.query {
  padding: 18px;
  margin-bottom: 18px;
}

label {
  display: block;
  margin: 10px 0 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

input, textarea, button {
  font: inherit;
}

input, textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid #b9c6cc;
  border-radius: 6px;
}

button {
  border: 0;
  border-radius: 6px;
  background: var(--green);
  color: white;
  font-weight: 700;
  cursor: pointer;
}

button:hover { background: var(--green-dark); }

.query-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px;
  gap: 10px;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, .9fr);
  gap: 18px;
}

.panel { padding: 18px; }
.main { grid-row: span 3; }

.panel-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

.panel-title strong {
  padding: 4px 8px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  text-transform: none;
}

.highlight, .logic {
  margin-top: 14px;
  padding: 11px 12px;
  border-left: 4px solid var(--green);
  background: #eef8f4;
  font-weight: 650;
}

.logic {
  border-left-color: var(--blue);
  background: #eef6f9;
}

.operations {
  margin: 16px 0 0;
  padding-left: 24px;
}

.operations li {
  margin-bottom: 12px;
  line-height: 1.45;
}

.item {
  padding: 10px 12px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfd;
}

.item strong { display: block; margin-bottom: 4px; }
.item p { color: var(--muted); line-height: 1.4; }

#feedbackBtn {
  width: 100%;
  height: 42px;
  margin-top: 10px;
}

@media (max-width: 840px) {
  .topbar, .grid {
    grid-template-columns: 1fr;
    flex-direction: column;
  }
  .query-row { grid-template-columns: 1fr; }
  .main { grid-row: auto; }
}