:root {
  --kfw-blue: #005ea5;
  --kfw-blue-strong: #003b73;
  --kfw-sky: #e8f1fb;
  --kfw-neutral: #f5f7fa;
  --kfw-border: #d8e2f0;
  --kfw-text: #1b1f3b;
  --kfw-muted: #5c6a82;
  --kfw-danger: #b00020;
  --kfw-success: #0f8a3c;
  --shadow: 0 8px 24px rgba(0, 63, 122, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Open Sans", system-ui, -apple-system, sans-serif;
  color: var(--kfw-text);
  background: linear-gradient(135deg, #f7f9fc 0%, #eef3fa 45%, #f9fbff 100%);
}

.app {
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.form-column {
  flex: 2;
  min-width: 360px;
}

.status-column {
  flex: 1;
  min-width: 300px;
}

.card {
  background: #fff;
  border: 1px solid var(--kfw-border);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}

h1, h2, h3, h4 {
  color: var(--kfw-blue-strong);
  margin-top: 0;
  letter-spacing: 0.01em;
}

p {
  color: var(--kfw-muted);
  line-height: 1.5;
}

.action-row {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}

.kfw-btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  background: #fff;
  color: var(--kfw-blue-strong);
}

.kfw-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(0, 63, 122, 0.12);
}

.kfw-btn-primary {
  background: linear-gradient(135deg, var(--kfw-blue) 0%, var(--kfw-blue-strong) 100%);
  color: #fff;
  border-color: var(--kfw-blue);
}

.kfw-btn-secondary {
  background: #fff;
  border-color: var(--kfw-border);
  color: var(--kfw-blue-strong);
}

.kfw-btn-danger {
  background: #fff0f2;
  border-color: #ffd6de;
  color: var(--kfw-danger);
}

.kfw-btn-ghost {
  background: transparent;
  border-color: var(--kfw-border);
  color: var(--kfw-blue-strong);
}

.kfw-btn:active {
  transform: translateY(0);
}

.spec-editor-textarea,
.kfw-textarea,
.kfw-input,
.kfw-checklist input {
  width: 100%;
  font-size: 0.95rem;
  border-radius: 10px;
  border: 1px solid var(--kfw-border);
  padding: 10px 12px;
  background: #fff;
  color: var(--kfw-text);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.kfw-textarea {
  min-height: 200px;
  resize: vertical;
}

.json-input {
  min-height: 150px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  background: #0d1b2a;
  color: #e4ecfa;
}

.array-field .array-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.array-item {
  border: 1px solid var(--kfw-border);
  padding: 12px;
}

.array-item-title {
  font-weight: 700;
  color: var(--kfw-blue-strong);
  margin-bottom: 6px;
}

.array-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.array-actions {
  display: flex;
  gap: 6px;
}

.array-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.nested-field {
  margin-bottom: 10px;
}

.kfw-tabs-container {
  margin-top: 12px;
}

.kfw-tabs {
  border-bottom: 1px solid var(--kfw-border);
}

.kfw-tab {
  background: #f6f9ff;
  border: 1px solid var(--kfw-border);
  border-bottom: none;
  padding: 10px 14px;
  font-weight: 600;
  color: var(--kfw-blue-strong);
}

.kfw-tab-selected {
  background: #fff;
  border-bottom: 1px solid #fff;
}

.kfw-tab-content {
  padding: 12px 0;
}

.tab-header {
  margin-bottom: 10px;
}

.small-btn {
  padding: 6px 10px;
  min-width: 36px;
}

.form-shell {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.kfw-input:focus,
.kfw-textarea:focus,
.kfw-checklist input:focus {
  outline: none;
  border-color: var(--kfw-blue);
  box-shadow: 0 0 0 3px rgba(0, 94, 165, 0.15);
}

.kfw-checklist {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--kfw-text);
}
.kfw-checklist label {
  font-weight: 600;
}

.form-field {
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-weight: 600;
  color: var(--kfw-blue-strong);
}

.help {
  font-size: 0.9rem;
  color: var(--kfw-muted);
}

.error {
  color: var(--kfw-danger);
  font-size: 0.9rem;
}

.code-block {
  background: #0f172a;
  color: #e2e8f0;
  padding: 12px;
  border-radius: 10px;
  max-height: 260px;
  overflow: auto;
  border: 1px solid #1e293b;
  font-size: 0.9rem;
}

.fields {
  margin-top: 12px;
}

.spec-editor {
  background: linear-gradient(145deg, #ffffff 0%, #f7fbff 100%);
}

.status-column {
  background: linear-gradient(145deg, #ffffff 0%, #f6f9ff 100%);
}

.spec-info {
  margin-top: 12px;
  color: var(--kfw-muted);
}

hr {
  border: none;
  border-top: 1px solid var(--kfw-border);
  margin: 16px 0;
}

@media (max-width: 900px) {
  .page {
    flex-direction: column;
  }
}