:root {
  color-scheme: dark;
  --bg: #111315;
  --bg-elevated: #171a1d;
  --bg-muted: #1f2428;
  --line: #2b3137;
  --text: #f4f7fa;
  --text-muted: #a7b0b8;
  --accent: #4cc38a;
  --accent-strong: #3ca874;
  --danger: #e56b6f;
  --warning: #e0b65d;
  --shadow: 0 14px 36px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
  min-height: 100vh;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 20px 24px 12px;
  border-bottom: 1px solid var(--line);
  background: rgba(17, 19, 21, 0.96);
  position: sticky;
  top: 0;
  z-index: 5;
}

.topbar h1 {
  margin: 4px 0 0;
  font-size: 22px;
  line-height: 1.2;
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.eyebrow {
  color: var(--text-muted);
  font-size: 12px;
  text-transform: uppercase;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--bg-muted);
  color: var(--text);
  font-size: 12px;
}

.status-banner {
  margin: 12px 24px 0;
  padding: 10px 14px;
  border-radius: 8px;
  background: rgba(76, 195, 138, 0.12);
  border: 1px solid rgba(76, 195, 138, 0.35);
  color: var(--text);
}

.status-banner.is-error {
  background: rgba(229, 107, 111, 0.12);
  border-color: rgba(229, 107, 111, 0.35);
}

.workspace {
  min-height: 0;
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
}

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--bg-elevated);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 0;
}

.sidebar-pane {
  min-height: 0;
  overflow: auto;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-heading {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
}

.tab-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.tab-button,
.ghost-button,
.primary-button,
.secondary-button,
.danger-button {
  min-height: 40px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-muted);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.tab-button:hover,
.ghost-button:hover,
.primary-button:hover,
.secondary-button:hover,
.danger-button:hover {
  background: #252b30;
}

.tab-button.is-active {
  background: rgba(76, 195, 138, 0.14);
  border-color: rgba(76, 195, 138, 0.45);
}

.primary-button {
  background: var(--accent);
  color: #07120d;
  border-color: transparent;
}

.primary-button:hover {
  background: var(--accent-strong);
}

.danger-button {
  background: rgba(229, 107, 111, 0.14);
  border-color: rgba(229, 107, 111, 0.38);
}

.text-input,
.text-area {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #121519;
  color: var(--text);
}

.text-area {
  min-height: 136px;
  resize: vertical;
}

.text-area.small {
  min-height: 88px;
}

.stack-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stack-list.compact {
  gap: 6px;
}

.list-item {
  padding: 12px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #13171a;
  cursor: pointer;
}

.list-item:hover {
  background: #191d21;
}

.list-item.is-active {
  border-color: rgba(76, 195, 138, 0.42);
  background: rgba(76, 195, 138, 0.08);
}

.list-item-title {
  font-size: 14px;
  font-weight: 600;
}

.list-item-meta {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-muted);
}

.content-area {
  min-width: 0;
  padding: 24px;
  overflow: auto;
}

.empty-state {
  min-height: calc(100vh - 160px);
  display: grid;
  place-content: center;
  gap: 8px;
  color: var(--text-muted);
  text-align: center;
}

.detail-view {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.detail-header h2 {
  margin: 4px 0 0;
  font-size: 24px;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 18px;
}

.detail-grid.two-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.panel {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.panel-title {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.action-row,
.inline-form,
.overlay-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.inline-form > * {
  flex: 1 1 0;
}

.inline-form > button {
  flex: 0 0 auto;
  min-width: 140px;
}

.toggle-field {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-muted);
}

.toggle-field input {
  width: 18px;
  height: 18px;
}

.preview-panel {
  padding-bottom: 8px;
}

.preview-surface {
  display: grid;
  gap: 12px;
  padding: 14px;
  border-radius: 8px;
  background: #101316;
  border: 1px solid var(--line);
}

.preview-title {
  font-size: 20px;
  font-weight: 700;
}

.preview-description {
  color: var(--text-muted);
  white-space: pre-wrap;
}

.preview-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preview-pill {
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bg-muted);
  border: 1px solid var(--line);
  font-size: 13px;
}

.preview-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.editable-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr) auto;
  gap: 8px;
  align-items: center;
}

.line-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

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

.mini-button {
  min-width: 36px;
  min-height: 36px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg-muted);
  color: var(--text);
  cursor: pointer;
}

.mini-button.danger {
  border-color: rgba(229, 107, 111, 0.35);
}

.snapshot-card {
  display: grid;
  gap: 8px;
}

.hidden {
  display: none !important;
}

@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .detail-grid,
  .detail-grid.two-up {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .topbar,
  .content-area,
  .sidebar {
    padding-left: 16px;
    padding-right: 16px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .tab-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .editable-row,
  .line-row {
    grid-template-columns: 1fr;
  }

  .stacked-mobile {
    flex-direction: column;
  }

  .stacked-mobile > button {
    width: 100%;
  }
}