/* Shared navigation shell for Datasets, model statistics and detail pages. */
:root {
  --sidebar-width: 240px;
  --sidebar-collapsed-width: 64px;
  --topbar-height: 44px;
}

.app-sidebar,
.topbar {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  font-size: 13px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}

.app-shell {
  min-height: 100vh;
  padding-left: var(--sidebar-width);
  transition: padding-left 180ms ease;
}

.app-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  width: var(--sidebar-width);
  border-right: 1px solid var(--line);
  background: #ffffff;
  display: flex;
  flex-direction: column;
  transition: width 180ms ease;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  height: var(--topbar-height);
  border-bottom: 1px solid var(--line);
  padding: 0 10px;
  overflow: hidden;
}

.sidebar-brand strong {
  font-size: 17px;
  font-weight: 650;
}

.sidebar-brand small {
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.langfuse-mark {
  flex: 0 0 auto;
  color: var(--accent);
  font-size: 16px;
}

.sidebar-collapse-button {
  border: 1px solid transparent;
  background: #ffffff;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  width: 30px;
  min-height: 30px;
  margin-left: auto;
  border-radius: 8px;
  padding: 0;
  color: #475569;
}

.sidebar-collapse-button span {
  display: block;
  transform: translateX(-1px);
  font-size: 16px;
  line-height: 1;
}

.sidebar-collapsed .app-shell {
  padding-left: var(--sidebar-collapsed-width);
}

.sidebar-collapsed .app-sidebar {
  width: var(--sidebar-collapsed-width);
}

.sidebar-collapsed .sidebar-brand {
  justify-content: center;
  gap: 4px;
  padding: 0 6px;
}

.sidebar-collapsed .sidebar-brand strong,
.sidebar-collapsed .sidebar-brand small,
.sidebar-collapsed .sidebar-label {
  display: none;
}

.sidebar-collapsed .sidebar-collapse-button {
  width: 26px;
  min-height: 26px;
  margin-left: 0;
}

.sidebar-nav {
  padding: 18px 0;
}

.sidebar-label {
  margin: 0 10px 10px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.sidebar-nav-button,
.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 40px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  padding: 0 12px;
  text-align: left;
  font-size: 14px;
  font-weight: 650;
  box-shadow: none;
  text-decoration: none;
}

.sidebar-nav-button span,
.sidebar-nav-link span {
  flex: 0 0 auto;
  font-size: 14px;
}

.sidebar-collapsed .sidebar-nav {
  padding: 12px 0;
}

.sidebar-collapsed .sidebar-nav-button,
.sidebar-collapsed .sidebar-nav-link {
  justify-content: center;
  gap: 0;
  min-height: 44px;
  padding: 0;
  font-size: 0;
}

.sidebar-collapsed .sidebar-nav-button span,
.sidebar-collapsed .sidebar-nav-link span {
  font-size: 16px;
}

.sidebar-nav-button:hover,
.sidebar-nav-link:hover {
  background: var(--surface-soft);
  box-shadow: none;
}

.sidebar-nav-button.active,
.sidebar-nav-link.active {
  background: #eef2f7;
}

.main-shell {
  min-height: 100vh;
  padding-bottom: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--topbar-height);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  padding: 0 20px;
  backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 20;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: min(600px, 42vw);
}

.app-breadcrumb {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 12px;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  color: #475569;
  font-size: 14px;
  font-weight: 600;
}

.breadcrumb-root {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  height: 32px;
  color: var(--ink);
  font-size: 16px;
  font-weight: 650;
}

.breadcrumb-separator {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  height: 32px;
  color: #94a3b8;
}

.breadcrumb-button,
.breadcrumb-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #475569;
  padding: 0 2px;
  font-weight: 600;
  box-shadow: none;
  text-decoration: none;
  white-space: nowrap;
}

.breadcrumb-button:hover,
.breadcrumb-link:hover {
  background: var(--surface-soft);
  box-shadow: none;
}

.breadcrumb-current {
  display: inline-flex;
  align-items: center;
  height: 32px;
  min-width: 0;
  max-width: min(360px, 24vw);
  flex: 0 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink);
}


.app-sidebar {
  border-color: var(--line);
  background: #ffffff;
}

.sidebar-brand {
  height: var(--topbar-height);
  gap: 10px;
  padding: 0 16px;
}

.sidebar-brand strong {
  color: #1f2d3d;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.langfuse-mark {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid #dce6f2;
  border-radius: 6px;
  background: #f6f9fd;
  color: var(--accent);
  font-size: 15px;
}

.sidebar-collapse-button {
  width: 28px;
  min-height: 28px;
  border-color: transparent;
  color: #667384;
}

.sidebar-collapse-button:hover {
  border-color: var(--line);
  background: var(--surface-soft);
}

.sidebar-nav {
  padding: 10px 12px;
}

.sidebar-label {
  margin: 0 10px 8px;
  color: #98a1ad;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sidebar-nav-button,
.sidebar-nav-link {
  min-height: 36px;
  margin: 2px 0;
  border-radius: 8px;
  color: #536171;
  padding: 0 12px;
  font-size: 13px;
  font-weight: 500;
}

.sidebar-nav-button span,
.sidebar-nav-link span {
  color: #6b7787;
  font-size: 16px;
}

.sidebar-nav-button:hover,
.sidebar-nav-link:hover {
  background: #f6f7f9;
  color: var(--ink);
}

.sidebar-nav-button.active,
.sidebar-nav-link.active {
  background: #eef0f3;
  color: #253448;
  font-weight: 650;
}

.sidebar-nav-button.active span,
.sidebar-nav-link.active span {
  color: #33475c;
}

.sidebar-collapsed .sidebar-nav {
  padding: 10px 8px;
}

.sidebar-collapsed .sidebar-nav-button,
.sidebar-collapsed .sidebar-nav-link {
  min-height: 38px;
  border-radius: 8px;
}

.topbar {
  height: var(--topbar-height);
  min-height: var(--topbar-height);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.96);
  padding: 0 16px;
  box-shadow: none;
  backdrop-filter: blur(12px);
}

.app-breadcrumb {
  gap: 8px;
  color: #7d8795;
  font-size: 13px;
  font-weight: 450;
}

.breadcrumb-root,
.breadcrumb-current {
  color: #27364a;
  font-weight: 600;
}

.breadcrumb-button,
.breadcrumb-link {
  color: #697587;
  font-weight: 500;
}


@media (max-width: 980px) {
  .app-shell {
    padding: 0;
  }

  .app-sidebar {
    position: static;
    width: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .sidebar-nav {
    padding: 8px 0;
  }

  .topbar {
    position: static;
    height: auto;
    min-height: var(--topbar-height);
    align-items: flex-start;
    display: grid;
    gap: 10px;
    padding: 10px 14px;
  }

  .app-breadcrumb {
    min-height: 30px;
  }

  .topbar {
    height: auto;
    grid-template-columns: minmax(0, 1fr);
    padding: 6px 16px;
  }

  .sidebar-nav {
    padding: 8px 12px;
  }
}