:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --accent: #0ea5e9;
  --accent-hover: #0284c7;
  --border: #e2e8f0;
  --success: #16a34a;
  --error: #dc2626;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  background: linear-gradient(135deg, #eef2ff 0%, #f0f9ff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 10px 40px rgba(15, 23, 42, 0.12);
}

h1 {
  margin: 0 0 8px;
  font-size: 24px;
  font-weight: 700;
}

.subtitle {
  margin: 0 0 24px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.field {
  margin: 20px 0;
}

.field label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.field textarea {
  width: 100%;
  padding: 12px;
  font-family: inherit;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

.field textarea:focus {
  border-color: var(--primary);
}

.btn {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  color: #fff;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary);
}
.btn-primary:not(:disabled):hover {
  background: var(--primary-hover);
}

.btn-accent {
  background: var(--accent);
}
.btn-accent:not(:disabled):hover {
  background: var(--accent-hover);
}

.status {
  margin-top: 20px;
  min-height: 20px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  word-break: break-word;
}

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

.status a {
  color: var(--accent);
  text-decoration: underline;
}

.view-body {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
}
.back-link:hover {
  color: var(--primary);
}