.config-page {
  min-height: 100vh;
  padding: clamp(18px, 3vw, 40px);
}

.config-hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.config-hero h1 {
  margin: 6px 0;
  font-size: clamp(30px, 5vw, 52px);
}

.config-hero p {
  margin: 0;
  color: var(--ink-muted);
}

.config-back {
  color: var(--accent-dark);
  font-weight: 650;
  text-decoration: none;
}

.config-manifest {
  width: min(540px, 100%);
}

.config-workspace {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.config-sidebar,
.config-json {
  border: 1px solid rgba(43, 37, 32, 0.1);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: 0 18px 45px rgba(88, 66, 48, 0.12);
}

.config-sidebar {
  max-height: calc(100vh - 40px);
  overflow: auto;
  position: sticky;
  top: 20px;
  padding: 16px;
}

.config-sidebar form {
  display: grid;
  gap: 14px;
}

.config-sidebar fieldset {
  display: grid;
  gap: 11px;
  margin: 0;
  padding: 14px;
  border: 1px solid rgba(43, 37, 32, 0.1);
  border-radius: 14px;
}

.config-sidebar legend {
  padding: 0 7px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.config-sidebar label,
.config-manifest {
  display: grid;
  gap: 6px;
  color: var(--ink-muted);
  font-size: 12px;
  font-weight: 650;
}

.config-sidebar input,
.config-sidebar select,
.config-sidebar textarea,
.config-manifest input {
  width: 100%;
  border: 1px solid rgba(43, 37, 32, 0.16);
  border-radius: 9px;
  padding: 9px 10px;
  background: rgba(255, 255, 255, 0.88);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
}

.config-sidebar textarea {
  min-height: 76px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.config-sidebar .config-check {
  display: flex;
  align-items: center;
  gap: 9px;
}

.config-sidebar .config-check input {
  width: 17px;
  height: 17px;
  accent-color: var(--accent);
}

.config-help {
  margin: -4px 0 2px 26px;
  color: var(--ink-muted);
  font-size: 11px;
  line-height: 1.4;
}

.config-coordinate-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.config-invalid {
  border-color: #b42318 !important;
  outline: 2px solid rgba(180, 35, 24, 0.15);
}

.config-actions button,
.config-json button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--accent);
  color: white;
  font-weight: 700;
  cursor: pointer;
}

.config-preview {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.config-viewer-shell {
  position: relative;
  height: clamp(820px, 100vh, 980px);
  min-height: 820px;
  overflow: hidden;
  border-radius: 18px;
  background: #151b22;
  box-shadow: 0 18px 45px rgba(34, 27, 22, 0.2);
}

.config-viewer-shell mango-viewer {
  display: block;
  width: 100%;
  height: 100%;
  --viewer-frame-shadow: none;
}

.config-viewer-shell .config-viewer--pending {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  pointer-events: none;
}

.config-json {
  overflow: hidden;
}

.config-json__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(43, 37, 32, 0.1);
}

.config-json h2 {
  margin: 0 0 3px;
  font-size: 17px;
}

#config-status {
  color: var(--ink-muted);
  font-size: 12px;
}

#config-status[data-state='error'] {
  color: #b42318;
}

#config-output {
  max-height: 460px;
  margin: 0;
  overflow: auto;
  padding: 18px;
  background: #211d1a;
  color: #f8efe7;
  font-size: 12px;
  line-height: 1.55;
}

@media (max-width: 960px) {
  .config-hero {
    align-items: stretch;
    flex-direction: column;
  }

  .config-workspace {
    grid-template-columns: 1fr;
  }

  .config-sidebar {
    max-height: none;
    position: static;
  }
}

@media (max-width: 600px) {
  .config-viewer-shell {
    height: 820px;
  }
}