:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --card: #ffffff;
  --text: #1d2630;
  --ok: #0a7d32;
  --err: #b42318;
  --line: #d0d7e2;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #e7eef8, var(--bg));
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  padding: 16px;
}

.card {
  width: min(680px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 16px;
}

.card-header-text {
  flex: 1;
}

.card-header-text p {
  margin: 4px 0 0;
}

.logo {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
  object-fit: contain;
}

h1 {
  margin: 0 0 4px;
}

.status {
  font-weight: 700;
}

.payload {
  background: #f8fafc;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  min-height: 88px;
  white-space: pre-wrap;
}

button {
  margin-top: 12px;
  border: 1px solid #0f5fbf;
  background: #1068d1;
  color: #fff;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
}

button:hover {
  background: #0c57b0;
}