:root {
  color-scheme: light;
  --admin-bg: #f4f7f9;
  --admin-surface: #ffffff;
  --admin-surface-soft: #fbfdff;
  --admin-border: #e2e8f0;
  --admin-ink: #0f172a;
  --admin-muted: #64748b;
  --admin-primary: #0c4da2;
  --admin-primary-strong: #083774;
  --admin-accent: #f26f21;
  --admin-success: #059669;
  --admin-warning: #d97706;
  --admin-shadow: 0 10px 30px -10px rgba(15, 23, 42, 0.08), 0 4px 10px -4px rgba(15, 23, 42, 0.04);
  --admin-shadow-strong: 0 20px 40px -10px rgba(15, 23, 42, 0.12), 0 8px 16px -4px rgba(15, 23, 42, 0.06);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  color: var(--admin-ink);
  background:
    radial-gradient(circle at top right, rgba(0, 201, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #f8fbff, var(--admin-bg));
}

.admin-login-page,
.admin-page {
  min-height: 100vh;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(100%, 420px);
  background: var(--admin-surface);
  border: 1px solid var(--admin-border);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--admin-shadow);
}

.login-brand,
.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--admin-accent);
}

.login-card h1,
.admin-topbar h1,
.panel-head h2,
.preview-head h2 {
  margin: 0 0 12px;
}

.login-helper,
.panel-head p,
.stat-card p,
.warning-banner,
.admin-identity,
.field span,
.login-message,
.login-back-link,
.stat-card span,
.revision-list,
.overview-actions,
.topbar-note,
.preview-note,
.guide-list,
.security-note,
.admin-hint,
.code-note {
  color: var(--admin-muted);
}

.login-form,
.security-form {
  display: grid;
  gap: 16px;
}

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

.field span {
  font-size: 13px;
  font-weight: 600;
}

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--admin-border);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
  color: var(--admin-ink);
  background: #fff;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 4px rgba(12, 77, 162, 0.15);
}

.field textarea {
  min-height: 140px;
  resize: vertical;
}

.format-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.format-toolbar span {
  color: var(--admin-muted);
  font-size: 12px;
  font-weight: 500;
}

.format-button {
  width: 34px;
  height: 30px;
  border: 1px solid var(--admin-border);
  border-radius: 10px;
  background: rgba(12, 77, 162, 0.08);
  color: var(--admin-primary);
  font-weight: 800;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.format-button:hover {
  background: rgba(12, 77, 162, 0.16);
  transform: translateY(-1px);
}

.format-button:nth-child(2) {
  font-style: italic;
}

.format-button-br {
  width: auto;
  min-width: 34px;
  padding: 0 8px;
  font-size: 16px;
  font-weight: 700;
}

.field code {
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(12, 77, 162, 0.08);
  color: var(--admin-primary);
}

.readonly-field {
  display: grid;
  gap: 6px;
}

.readonly-field strong {
  font-size: 12px;
  color: var(--admin-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.readonly-field span {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(12, 77, 162, 0.05);
  border: 1px solid var(--admin-border);
  color: var(--admin-ink);
}

.primary-button,
.secondary-button,
.danger-button,
.ghost-button,
.sidebar-tab,
.array-action,
.item-action,
.preview-chip {
  appearance: none;
  border: 0;
  border-radius: 12px;
  font: inherit;
  cursor: pointer;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease,
    background-color 0.2s ease,
    color 0.2s ease,
    border-color 0.2s ease,
    opacity 0.2s ease;
}

.primary-button,
.secondary-button,
.danger-button,
.ghost-button {
  padding: 12px 16px;
  font-weight: 700;
}

.primary-button:hover,
.secondary-button:hover,
.danger-button:hover,
.ghost-button:hover,
.sidebar-tab:hover,
.array-action:hover,
.item-action:hover,
.preview-chip:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: var(--admin-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(12, 77, 162, 0.25);
}

.primary-button:hover {
  background: var(--admin-primary-strong);
  box-shadow: 0 6px 16px rgba(12, 77, 162, 0.35);
}

.secondary-button {
  background: rgba(12, 77, 162, 0.08);
  color: var(--admin-primary);
}

.secondary-button:hover,
.ghost-button:hover,
.array-action:hover,
.item-action:hover,
.preview-chip:hover {
  background: rgba(12, 77, 162, 0.14);
}

.secondary-button.is-active {
  background: rgba(12, 77, 162, 0.18);
  color: var(--admin-primary-strong);
}

.ghost-button {
  background: transparent;
  color: var(--admin-primary);
  border: 1px solid var(--admin-border);
}

.danger-button {
  background: rgba(198, 40, 40, 0.08);
  color: #b42318;
  border: 1px solid rgba(198, 40, 40, 0.18);
}

.danger-button:hover {
  background: rgba(198, 40, 40, 0.14);
}

.primary-button:disabled,
.secondary-button:disabled,
.danger-button:disabled,
.ghost-button:disabled,
.array-action:disabled,
.item-action:disabled,
.preview-chip:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.login-message {
  min-height: 20px;
  margin: 16px 0 0;
  font-size: 14px;
}

.login-back-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
}

.login-secondary-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 14px;
  color: var(--admin-primary);
  text-decoration: none;
}

.admin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--admin-border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 20;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
  transition:
    transform 0.28s ease,
    opacity 0.28s ease,
    box-shadow 0.28s ease;
}

.topbar-copy {
  display: grid;
  gap: 4px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.save-state {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(22, 130, 96, 0.12);
  color: var(--admin-success);
  font-size: 13px;
  font-weight: 700;
}

.save-state.is-dirty {
  background: rgba(245, 165, 36, 0.16);
  color: #9a6700;
}

.admin-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 420px;
  gap: 20px;
  padding: 20px 24px 28px;
  align-items: start;
  transition: gap 0.28s ease;
}

.admin-sidebar,
.admin-main,
.admin-preview-pane {
  background: #ffffff;
  border: 1px solid var(--admin-border);
  border-radius: 24px;
  box-shadow: var(--admin-shadow);
}

.admin-sidebar {
  padding: 16px;
  display: grid;
  gap: 8px;
  position: sticky;
  top: 112px;
  z-index: 5;
  transition:
    transform 0.28s ease,
    opacity 0.28s ease;
}

.sidebar-tab {
  text-align: left;
  padding: 12px 14px;
  background: transparent;
  color: var(--admin-ink);
}

.sidebar-tab:hover {
  background: rgba(12, 77, 162, 0.08);
}

.sidebar-tab.is-active {
  background: #0c4da2;
  color: #fff;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, 0.14);
}

.admin-main,
.admin-preview-pane {
  padding: 20px;
}

.admin-main {
  min-width: 0;
  transition:
    opacity 0.28s ease,
    transform 0.28s ease;
}

.admin-panel {
  display: none;
}

.admin-panel.is-active {
  display: block;
}

.admin-alert,
.warning-banner {
  border-radius: 16px;
  padding: 14px 16px;
  margin-bottom: 16px;
}

.admin-alert {
  background: rgba(22, 130, 96, 0.12);
  border: 1px solid rgba(22, 130, 96, 0.22);
  color: var(--admin-success);
}

.admin-alert.is-error {
  background: rgba(183, 48, 54, 0.12);
  border-color: rgba(183, 48, 54, 0.2);
  color: #b73036;
}

.warning-banner {
  background: rgba(245, 165, 36, 0.14);
  border: 1px solid rgba(245, 165, 36, 0.26);
}

.panel-head {
  margin-bottom: 16px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 18px;
}

.security-status-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  padding: 16px;
  background: rgba(12, 77, 162, 0.04);
  margin-bottom: 16px;
}

.security-note {
  margin: 8px 0 0;
  line-height: 1.7;
}

.security-form-inline {
  margin-bottom: 18px;
}

.security-form-inline .secondary-button {
  justify-self: start;
}

.stat-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  padding: 18px;
  background: #fff;
}

.stat-card strong {
  display: block;
  font-size: 20px;
  margin: 8px 0 10px;
}

.overview-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-card {
  display: grid;
  gap: 18px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.guide-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  padding: 18px;
  background: rgba(12, 77, 162, 0.03);
}

.guide-card h3 {
  margin: 0 0 10px;
}

.guide-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
}

.editor-root {
  display: grid;
  gap: 16px;
}

.editor-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  padding: 16px;
  background: #fff;
}

.editor-card > summary {
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.editor-card > summary::-webkit-details-marker {
  display: none;
}

.editor-grid {
  display: grid;
  gap: 14px;
  margin-top: 14px;
}

.array-list {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.array-item {
  border: 1px solid var(--admin-border);
  border-radius: 16px;
  padding: 14px;
  background: #fcfdff;
}

.array-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.array-item-title {
  font-weight: 700;
}

.array-tools,
.item-tools,
.menu-actions,
.preview-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.array-action,
.item-action,
.preview-chip {
  padding: 8px 10px;
  background: rgba(12, 77, 162, 0.08);
  color: var(--admin-primary);
  font-size: 13px;
}

.preview-chip.is-active {
  background: rgba(12, 77, 162, 0.16);
  color: var(--admin-primary-strong);
}

.menu-editor-card,
.code-editor-card {
  display: grid;
  gap: 16px;
}

.collection-editor-card {
  display: grid;
  gap: 16px;
}

.flow-stack {
  display: grid;
  gap: 16px;
}

.flow-section-card > summary {
  display: flex;
  align-items: center;
  gap: 12px;
}

.flow-section-card > summary span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--admin-primary), #18a8f0);
  color: #fff;
  font-size: 12px;
}

.flow-section-card > summary strong {
  font-size: 18px;
}

.flow-section-body {
  display: grid;
  gap: 16px;
  padding-top: 16px;
}

.flow-lang-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.flow-assets-box {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px dashed rgba(12, 77, 162, 0.24);
  border-radius: 16px;
  background: rgba(12, 77, 162, 0.04);
}

.flow-assets-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.flow-asset-chip {
  border: 1px solid var(--admin-border);
  border-radius: 999px;
  padding: 8px 12px;
  background: #fff;
  color: var(--admin-primary);
  font-weight: 700;
  cursor: pointer;
}

.collection-title {
  margin: 0;
  font-size: 24px;
}

.collection-intro {
  margin: 0;
  color: var(--admin-muted);
  line-height: 1.7;
}

.menu-editor-card > p,
.code-editor-card > p {
  margin: 0;
  color: var(--admin-muted);
}

.menu-item-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  padding: 18px;
  background: linear-gradient(180deg, #ffffff, var(--admin-surface-soft));
  display: grid;
  gap: 16px;
}

.menu-item-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.menu-item-head h3 {
  margin: 0 0 6px;
  font-size: 22px;
}

.menu-item-head p {
  margin: 0;
  color: var(--admin-muted);
}

.menu-item-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.track-editor-card {
  gap: 16px;
}

.track-tags-editor {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid var(--admin-border);
  background: rgba(12, 77, 162, 0.03);
}

.track-tags-editor strong {
  font-size: 15px;
}

.track-tag-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.track-tag-remove {
  align-self: center;
}

.menu-helper {
  margin: 0;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(12, 77, 162, 0.04);
  color: var(--admin-muted);
  line-height: 1.7;
}

.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--admin-border);
  border-radius: 14px;
  background: #fff;
}

.toggle-copy {
  display: grid;
  gap: 4px;
}

.toggle-copy strong {
  font-size: 14px;
}

.toggle-copy span {
  font-size: 13px;
  color: var(--admin-muted);
}

.toggle-row input[type="checkbox"] {
  width: 22px;
  height: 22px;
  accent-color: var(--admin-primary);
}

.code-editor-card .field textarea {
  min-height: 220px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
  line-height: 1.65;
}

.code-warning {
  margin: 0;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid rgba(245, 165, 36, 0.24);
  background: rgba(245, 165, 36, 0.12);
  color: #9a6700;
  line-height: 1.7;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.media-card {
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
}

.media-preview-wrap {
  aspect-ratio: 16 / 9;
  background: linear-gradient(180deg, #d8e8ff, #f8fbff);
  display: grid;
  place-items: center;
  overflow: hidden;
}

.media-preview {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.media-empty-preview {
  display: grid;
  min-height: 100%;
  width: 100%;
  place-items: center;
  color: var(--admin-muted);
  font-weight: 700;
}

.media-card-body {
  padding: 16px;
  display: grid;
  gap: 10px;
}

.media-card-body strong {
  display: block;
}

.media-meta {
  font-size: 13px;
  color: var(--admin-muted);
}

.media-selection {
  font-weight: 600;
  color: var(--admin-primary);
}

.field-clear-button {
  justify-self: start;
}

.media-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.admin-preview-pane {
  position: sticky;
  top: 112px;
  min-width: 0;
  transition:
    transform 0.28s ease,
    opacity 0.28s ease,
    box-shadow 0.28s ease;
}

.preview-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.preview-frame {
  width: 100%;
  min-height: 780px;
  border: 1px solid var(--admin-border);
  border-radius: 18px;
  background: #fff;
}

.revision-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

.revision-list li {
  border: 1px solid var(--admin-border);
  border-radius: 14px;
  padding: 12px 14px;
  background: #fff;
}

.admin-page.preview-focus {
  overflow: hidden;
}

.admin-page.admin-reviewing .admin-topbar {
  transform: translateY(calc(-100% + 22px));
  opacity: 0.18;
}

.admin-page.admin-reviewing .admin-topbar:hover {
  transform: translateY(0);
  opacity: 1;
}

.admin-page.admin-reviewing .admin-sidebar {
  opacity: 0.18;
  transform: translateX(-10px);
}

.admin-page.admin-reviewing .admin-sidebar:hover {
  opacity: 1;
  transform: translateX(0);
}

.admin-page.preview-focus .admin-topbar {
  transform: translateY(-120%);
  opacity: 0;
  pointer-events: none;
}

.admin-page.preview-focus .admin-sidebar,
.admin-page.preview-focus .admin-main {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-18px);
}

.admin-page.preview-focus .admin-preview-pane {
  position: fixed;
  inset: 20px;
  top: 20px;
  z-index: 40;
  box-shadow: var(--admin-shadow-strong);
  background: rgba(255, 255, 255, 0.98);
}

.admin-page.preview-focus .preview-head {
  position: sticky;
  top: 0;
  z-index: 3;
  padding-bottom: 12px;
  background: rgba(255, 255, 255, 0.98);
}

.admin-page.preview-focus .preview-frame {
  min-height: 0;
  height: calc(100vh - 120px);
}

@media (max-width: 1440px) {
  .admin-layout {
    grid-template-columns: 220px minmax(0, 1fr);
  }

  .admin-sidebar {
    position: static;
  }

  .admin-preview-pane {
    grid-column: 1 / -1;
    position: static;
  }
}

@media (max-width: 1080px) {
  .admin-topbar,
  .admin-layout {
    padding-left: 16px;
    padding-right: 16px;
  }

  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar,
  .admin-preview-pane {
    position: static;
  }

  .stat-grid,
  .guide-grid,
  .media-grid,
  .menu-item-grid,
  .flow-lang-grid {
    grid-template-columns: 1fr;
  }

  .preview-head,
  .menu-item-head {
    flex-direction: column;
  }

  .admin-page.preview-focus .admin-preview-pane {
    inset: 12px;
  }

  .admin-page.preview-focus .preview-frame {
    height: calc(100vh - 150px);
  }
}

@media (max-width: 768px) {
  .admin-topbar {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px 16px;
  }

  .topbar-actions {
    justify-content: stretch;
  }

  .topbar-actions .primary-button,
  .topbar-actions .secondary-button {
    flex: 1;
    text-align: center;
    min-width: 0;
    font-size: 13px;
    padding: 10px 12px;
  }

  .save-state {
    font-size: 12px;
    padding: 6px 10px;
  }

  .admin-identity {
    font-size: 12px;
  }

  .admin-sidebar {
    display: flex;
    overflow-x: auto;
    gap: 6px;
    padding: 10px;
    -webkit-overflow-scrolling: touch;
  }

  .sidebar-tab {
    white-space: nowrap;
    font-size: 13px;
    padding: 8px 12px;
    flex-shrink: 0;
  }

  .admin-main {
    padding: 14px;
  }

  .panel-head h2 {
    font-size: 20px;
  }

  .collection-title {
    font-size: 18px;
  }

  .menu-item-head h3 {
    font-size: 16px;
  }

  .media-grid {
    grid-template-columns: 1fr;
  }

  .media-actions {
    grid-template-columns: 1fr;
  }

  .preview-frame {
    min-height: 400px;
  }

  .admin-preview-pane {
    padding: 14px;
  }

  .track-tag-row {
    grid-template-columns: 1fr;
  }
}