:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --line: #d8dfeb;
  --text: #132033;
  --muted: #5b667a;
  --accent: #0f766e;
  --danger: #b42318;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 1rem;
}

.topbar h1 {
  margin: 0;
  font-size: 1.35rem;
}

.topbar p {
  margin: 0.4rem 0 1rem;
  color: var(--muted);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: end;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  min-width: 300px;
  gap: 0.25rem;
}

select,
input,
textarea,
button {
  font: inherit;
}

select,
input,
textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.45rem 0.55rem;
}

button {
  border: 1px solid var(--line);
  background: #f1f4fa;
  border-radius: 7px;
  padding: 0.48rem 0.7rem;
  cursor: pointer;
}

button:hover {
  background: #e8eef8;
}

.status {
  min-height: 1.5rem;
  margin: 0.65rem 0;
  color: var(--muted);
}

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

.status.ok {
  color: var(--accent);
}

.editor-root {
  display: grid;
  gap: 0.8rem;
}

.empty {
  margin: 0;
  color: var(--muted);
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 1rem;
}

.panel-card,
.section-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem;
}

.panel-head,
.section-head,
.link-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.panel-head h2,
.section-head h3 {
  margin: 0;
  font-size: 1rem;
}

.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.22rem;
}

.field span {
  color: var(--muted);
  font-size: 0.85rem;
}

.section-list,
.link-list {
  margin-top: 0.6rem;
  display: grid;
  gap: 0.55rem;
}

.actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 0.4rem 0;
}

.danger {
  border-color: #f3c4bf;
  background: #fff2f0;
  color: #7a1a11;
}