:root {
  --admin-blue: #176ee8;
  --admin-blue-dark: #0b4ca8;
  --admin-ink: #141824;
  --admin-muted: #687183;
  --admin-soft: #f5f7fb;
  --admin-panel: #ffffff;
  --admin-line: #dce4ef;
  --admin-danger: #c92f2f;
  --admin-shadow: 0 16px 40px rgba(20, 24, 36, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--admin-soft);
  color: var(--admin-ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

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

button,
.primary-link {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--admin-line);
  border-radius: 8px;
  background: #fff;
  color: var(--admin-ink);
  padding: 0 14px;
  font-size: 0.9rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}

button:hover,
.primary-link:hover {
  border-color: #b9c8dc;
}

.primary-link {
  border-color: var(--admin-blue);
  background: var(--admin-blue);
  color: #fff;
}

.danger {
  border-color: #f0caca;
  color: var(--admin-danger);
}

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--admin-line);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--admin-blue);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.admin-topbar h1,
.editor-head h2 {
  margin: 0;
  letter-spacing: -0.03em;
}

.admin-topbar h1 {
  font-size: 1.25rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.history-actions {
  display: inline-flex;
  gap: 6px;
  padding: 3px;
  border: 1px solid var(--admin-line);
  border-radius: 10px;
  background: #f8fbff;
}

.history-actions button {
  width: 38px;
  min-height: 32px;
  padding: 0;
  font-size: 1.05rem;
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.save-status {
  min-width: 78px;
  color: var(--admin-muted);
  font-size: 0.86rem;
  font-weight: 750;
}

.admin-shell {
  min-height: calc(100vh - 82px);
  display: grid;
  grid-template-columns: 230px minmax(460px, 720px) minmax(420px, 1fr);
  gap: 18px;
  padding: 18px;
}

.section-sidebar,
.editor-panel,
.preview-panel {
  border: 1px solid var(--admin-line);
  border-radius: 14px;
  background: var(--admin-panel);
  box-shadow: var(--admin-shadow);
}

.section-sidebar {
  position: sticky;
  top: 100px;
  height: calc(100vh - 118px);
  padding: 16px;
  overflow: auto;
}

.sidebar-title {
  margin-bottom: 12px;
  color: var(--admin-muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.section-nav {
  display: grid;
  gap: 6px;
}

.nav-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px;
}

.nav-button {
  width: 100%;
  justify-content: flex-start;
  border-color: transparent;
  background: transparent;
  color: #2e3544;
}

.nav-restore {
  width: auto;
  min-height: 34px;
  padding: 0 8px;
  border-color: transparent;
  color: var(--admin-muted);
  font-size: 0.72rem;
}

.nav-restore:hover {
  border-color: #cbd8ea;
  color: var(--admin-blue-dark);
}

.nav-button.active {
  background: #eef5ff;
  color: var(--admin-blue-dark);
}

.editor-panel {
  padding: 22px;
  overflow: hidden;
}

.editor-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--admin-line);
}

.editor-head h2 {
  font-size: 1.65rem;
}

.editor-head p:last-child {
  max-width: 560px;
  margin: 8px 0 0;
  color: var(--admin-muted);
  line-height: 1.45;
}

.editor-fields {
  display: grid;
  gap: 16px;
  padding-top: 18px;
}

.field-group,
.array-card,
.json-drawer {
  border: 1px solid var(--admin-line);
  border-radius: 12px;
  background: #fbfcfe;
}

.field-group {
  padding: 16px;
}

.field-group > h3,
.array-head h3 {
  margin: 0;
  font-size: 1rem;
}

.field-group-description {
  margin: 8px 0 0;
  color: var(--admin-muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.group-body,
.array-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
}

.field-row {
  display: grid;
  gap: 8px;
}

.field-row label {
  color: #374153;
  font-size: 0.86rem;
  font-weight: 780;
}

.field-row input,
.field-row select,
.field-row textarea {
  width: 100%;
  border: 1px solid #c9d4e4;
  border-radius: 8px;
  background: #fff;
  color: var(--admin-ink);
  padding: 10px 11px;
  outline: none;
}

.field-row input:focus,
.field-row select:focus,
.field-row textarea:focus {
  border-color: var(--admin-blue);
  box-shadow: 0 0 0 3px rgba(23, 110, 232, 0.12);
}

.number-control {
  display: grid;
  grid-template-columns: 1fr 96px;
  gap: 12px;
  align-items: center;
}

.number-control input[type="range"] {
  height: 6px;
  padding: 0;
  border: 0;
  accent-color: var(--admin-blue);
}

.number-control input[type="number"] {
  text-align: right;
}

.field-row textarea {
  min-height: 96px;
  resize: vertical;
}

.color-row {
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: end;
  gap: 10px;
}

.color-row input[type="color"] {
  height: 42px;
  padding: 4px;
}

.media-field {
  padding: 12px;
  border: 1px solid #e4eaf3;
  border-radius: 10px;
  background: #fff;
}

.media-preview {
  min-height: 118px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px dashed #b9c8dc;
  border-radius: 10px;
  background:
    linear-gradient(45deg, #f7faff 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(45deg, transparent 75%, #f7faff 75%) 0 0 / 18px 18px,
    #fff;
  color: var(--admin-muted);
  font-size: 0.86rem;
  text-align: center;
}

.media-preview img {
  max-width: 100%;
  max-height: 170px;
  display: block;
  object-fit: contain;
}

.svg-preview {
  color: var(--admin-blue);
}

.svg-preview svg {
  width: 64px;
  height: 64px;
  display: block;
}

.media-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.media-upload {
  border-color: var(--admin-blue);
  background: #eef5ff;
  color: var(--admin-blue-dark);
}

.media-helper {
  margin: -2px 0 0;
  color: var(--admin-muted);
  font-size: 0.8rem;
  line-height: 1.35;
}

.toggle-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #e4eaf3;
  border-radius: 9px;
  background: #fff;
}

.toggle-field input {
  width: 42px;
  height: 22px;
  accent-color: var(--admin-blue);
}

.array-head,
.array-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.array-head {
  padding: 16px;
  border-bottom: 1px solid var(--admin-line);
}

.array-list {
  padding: 16px;
}

.array-card {
  padding: 14px;
  background: #fff;
}

.array-card-head {
  padding-bottom: 12px;
  border-bottom: 1px solid #edf1f6;
}

.array-card-title {
  color: var(--admin-muted);
  font-size: 0.82rem;
  font-weight: 850;
  text-transform: uppercase;
}

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

.mini-actions button {
  min-height: 30px;
  padding: 0 9px;
  font-size: 0.78rem;
}

.json-drawer {
  margin-top: 18px;
  padding: 14px;
}

.json-drawer summary {
  color: var(--admin-blue-dark);
  font-weight: 850;
  cursor: pointer;
}

#jsonBox {
  width: 100%;
  min-height: 220px;
  margin-top: 14px;
  border: 1px solid #c9d4e4;
  border-radius: 10px;
  padding: 12px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.86rem;
}

.preview-panel {
  position: sticky;
  top: 100px;
  height: calc(100vh - 118px);
  overflow: hidden;
}

.preview-head {
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 14px;
  border-bottom: 1px solid var(--admin-line);
  font-weight: 850;
}

#sitePreview {
  width: 100%;
  height: calc(100% - 54px);
  border: 0;
  background: #fff;
}

@media (max-width: 1240px) {
  .admin-shell {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .preview-panel {
    grid-column: 1 / -1;
    position: static;
    height: 720px;
  }
}

@media (max-width: 820px) {
  .admin-topbar,
  .editor-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-shell {
    grid-template-columns: 1fr;
    padding: 12px;
  }

  .section-sidebar,
  .preview-panel {
    position: static;
    height: auto;
  }

  .section-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .preview-panel {
    height: 620px;
  }
}