/* Base layout */
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f6f8fa;
  color: #1f2933;
}

.page {
  max-width: 780px;
  margin: 32px auto;
  padding: 0 16px 32px;
}

.page-header {
  margin-bottom: 16px;
}

.page-title {
  margin: 0 0 4px 0;
  font-size: 24px;
  font-weight: 600;
}

.page-subtitle {
  margin: 0;
  color: #4b5563;
  font-size: 14px;
}

/* Cards */
.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
}

.card-header {
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 15px;
  color: #111827;
}

/* Form */
.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-weight: 600;
  font-size: 14px;
  color: #111827;
}

.form-control {
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  color: #111827;
  background: #ffffff;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.form-hint {
  font-size: 12px;
  color: #6b7280;
}

.form-error {
  font-size: 12px;
  color: #b91c1c;
  min-height: 16px;
}

.form-actions {
  display: flex;
  justify-content: flex-start;
  margin-top: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-primary {
  background: #2563eb;
  color: #ffffff;
  border-color: #2563eb;
}

.btn-primary:hover {
  background: #1d4ed8;
  border-color: #1d4ed8;
}

/* Results */
.result-panel {
  border: 1px solid #e5e7eb;
  background: #f9fafb;
  border-radius: 6px;
  min-height: 140px;
  padding: 12px;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-word;
  color: #111827;
  line-height: 1.5;
}

.hidden {
  display: none;
}