:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #5f6b85;
  --border: #dbe3f0;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #166534;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #eef4ff, #f8fafc);
  color: var(--text);
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 16px 48px;
}

.hero {
  margin-bottom: 24px;
}

.badge {
  display: inline-block;
  margin: 0 0 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #dbeafe;
  color: #1e40af;
  font-size: 0.875rem;
  font-weight: 700;
}

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

.subtitle {
  color: var(--muted);
  max-width: 60ch;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
  padding: 20px;
  margin-bottom: 18px;
}

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

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

input,
textarea,
button {
  font: inherit;
}

input,
textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

input:focus,
textarea:focus,
button:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  outline-offset: 2px;
}

button {
  width: fit-content;
  border: 0;
  border-radius: 12px;
  padding: 12px 18px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  transition: background 0.2s ease;
}

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

button.secondary {
  background: #e2e8f0;
  color: #0f172a;
}

button.secondary:hover {
  background: #cbd5e1;
}

.status {
  min-height: 1.25rem;
  color: var(--muted);
}

.status.success {
  color: var(--success);
}

.status.error {
  color: var(--error);
}

.messages-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.messages {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
  display: grid;
  gap: 12px;
}

.message {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  background: #fbfdff;
}

.message-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.message-name {
  font-weight: 700;
  color: var(--text);
}

.message-text {
  white-space: pre-wrap;
  line-height: 1.5;
  margin: 0;
}