:root {
  color-scheme: light dark;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #182236;
  --muted: #667085;
  --line: #d9e1f2;
  --accent: #1f4b99;
  --accent-soft: #e8f0ff;
  --danger: #a33;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --panel: #1f2937;
    --text: #f3f4f6;
    --muted: #a6adbb;
    --line: #374151;
    --accent: #8ab4ff;
    --accent-soft: #17213a;
    --danger: #ff9b9b;
  }
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

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

.app-header {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 2;
}

h1, h2, h3 {
  margin: 0 0 8px;
}

h1 {
  font-size: 20px;
}

h2 {
  font-size: 16px;
}

p, small {
  margin: 0;
  color: var(--muted);
}

button {
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  background: var(--accent);
  color: white;
  font-weight: 700;
}

button:disabled {
  opacity: 0.45;
}

button.secondary {
  background: var(--accent-soft);
  color: var(--accent);
}

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

input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

textarea {
  resize: vertical;
}

.layout {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 16px;
  padding: 16px;
}

.list-layout {
  grid-template-columns: minmax(0, 720px);
  justify-content: center;
}

.screen.content {
  padding: 16px;
}

.sidebar, .content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px;
}

.empty {
  color: var(--muted);
}

.header-actions, .toolbar, .row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.detail-header {
  justify-content: space-between;
}

.tabbar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  position: sticky;
  top: 76px;
  z-index: 1;
  background: var(--bg);
  padding: 4px 0;
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 8px 0 14px;
}

.filter-grid label {
  color: var(--muted);
  font-size: 12px;
}

.view-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}

.full-width {
  width: 100%;
  margin-top: 8px;
}

.toolbar input {
  max-width: 520px;
}

.status {
  margin: 10px 0;
  color: var(--muted);
  white-space: pre-wrap;
}

.cache-panel {
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 10px 0 12px;
  padding: 10px;
}

.cache-panel h2 {
  font-size: 14px;
}

.cache-actions {
  display: grid;
  gap: 8px;
  margin: 8px 0;
}

.case-list, .item-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 60vh;
  overflow: auto;
}

.case-card, .item-card {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px;
  background: transparent;
}

.case-card {
  cursor: pointer;
}

.item-card {
  cursor: pointer;
}

.case-card.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.case-title {
  display: block;
  font-weight: 800;
  line-height: 1.35;
}

.case-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 7px 0;
}

.badge {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 11px;
  padding: 2px 7px;
}

.badge.on {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-top: 8px;
}

.stat {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px;
  text-align: center;
}

.stat strong {
  display: block;
  font-size: 16px;
}

.stat span {
  color: var(--muted);
  font-size: 11px;
}

.stat.warn strong {
  color: var(--danger);
}

.meta {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

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

.answer {
  margin-top: 12px;
  white-space: pre-wrap;
  line-height: 1.7;
}

.reader {
  border-top: 1px solid var(--line);
  margin-top: 14px;
  padding-top: 14px;
}

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

pre {
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
}

@media (max-width: 860px) {
  .app-header, .header-actions, .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

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

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

  .screen.content {
    padding: 12px;
  }

  .tabbar {
    top: 92px;
  }

  .case-list, .item-list {
    max-height: none;
  }
}