.app-shell {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  min-height: 100vh;
}

body:not(.is-authenticated) .app-shell {
  grid-template-columns: minmax(0, 1fr);
}

body:not(.is-authenticated) .sidebar {
  display: none;
}

body:not(.is-authenticated) .main-shell {
  display: grid;
  min-height: 100vh;
  padding: 0;
}

.sidebar {
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 0.72rem;
  min-height: 100vh;
  max-height: 100vh;
  padding: 1rem 0.78rem 0.82rem;
  border-right: 1px solid var(--sidebar-line);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  overflow-y: auto;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.1rem 0.18rem 0.24rem;
  opacity: 0.96;
}

.brand-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  flex-shrink: 0;
}

.brand-logo {
  display: none;
  width: 100%;
  height: auto;
}

.brand-logo-light {
  display: block;
}

html[data-theme="dark"] .brand-logo-light {
  display: none;
}

html[data-theme="dark"] .brand-logo-dark {
  display: block;
}

.brand-copy {
  display: grid;
  gap: 0.08rem;
  min-width: 0;
  justify-items: start;
  text-align: left;
}

.brand-name-cn {
  color: var(--sidebar-text);
  font-family: "Noto Sans SC", sans-serif;
  font-size: 1.42rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.1;
}

.brand-name-en {
  color: color-mix(in srgb, var(--sidebar-text) 72%, transparent);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.24em;
  line-height: 1.2;
}

.sidebar h1 {
  font-size: 1.7rem;
  line-height: 1;
}

.nav-list {
  display: grid;
  gap: 0.4rem;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.74rem 0.78rem;
  border: 1px solid transparent;
  border-radius: 14px;
  background: transparent;
  color: inherit;
  text-align: left;
  transition: 160ms ease;
}

.nav-item::before {
  content: "";
  position: absolute;
  inset: 10px auto 10px 0;
  width: 3px;
  border-radius: 999px;
  background: transparent;
}

.nav-item:hover,
.nav-item.is-active {
  border-color: var(--sidebar-hover-line);
  background: var(--sidebar-hover-bg);
}

.nav-item.is-active::before {
  background: var(--brand);
}

.nav-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--sidebar-kicker-bg);
  color: var(--sidebar-kicker-text);
  font-size: 0.76rem;
  font-weight: 600;
}

.nav-icon svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.sidebar-card {
  padding: 0.72rem;
  border: 1px solid var(--sidebar-line);
  border-radius: var(--radius-lg);
  background: var(--sidebar-card);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.workspace-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.2rem;
}

.sidebar-label {
  margin-bottom: 0.38rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: color-mix(in srgb, var(--sidebar-text) 58%, transparent);
}

.sidebar-hint {
  color: color-mix(in srgb, var(--sidebar-text) 80%, transparent);
  line-height: 1.5;
  font-size: 0.88rem;
}

.sidebar-user-head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.sidebar-user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-soft), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--sidebar-line);
  flex-shrink: 0;
}

.sidebar-user-copy {
  min-width: 0;
}

.sidebar-user-copy strong {
  display: block;
  margin-bottom: 0.18rem;
}

.main-shell {
  padding: 1.15rem 1.35rem 1.7rem;
}

.topbar,
.hero-card,
.panel-card,
.metric-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface-card);
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow-soft);
}

.panel-card-subtle {
  background: var(--surface-card-subtle);
  box-shadow: var(--shadow-soft);
}

.panel-card-emphasis {
  background: var(--surface-card-strong);
  border-color: var(--line-strong);
}

.hero-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.35rem 1.45rem;
}

.hero-card h2 {
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  line-height: 1.1;
}

.hero-copy {
  margin-top: 0.18rem;
  color: var(--hero-copy);
  font-size: 0.94rem;
  line-height: 1.45;
}

.hero-actions,
.inline-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.topbar .primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  height: 42px;
  padding: 0 1.15rem;
  line-height: 1;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.metric-card {
  position: relative;
  overflow: hidden;
  padding: 1.15rem 1.2rem;
  background: var(--surface-card);
}

.metric-card::after {
  content: "";
  position: absolute;
  inset: auto auto 0 0;
  width: 44px;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--gold));
}

.metric-value {
  display: block;
  margin: 0.5rem 0 0.18rem;
  font-size: clamp(1.8rem, 2.6vw, 2.4rem);
  line-height: 1;
}

.control-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.75fr);
  gap: 1rem;
  margin-top: 1rem;
}

.stack-panel,
.connection-grid,
.detail-body {
  display: grid;
  gap: 1rem;
}

.panel-card {
  padding: 1.25rem;
}

.panel-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-head h3 {
  font-size: 1.12rem;
  line-height: 1.2;
}

.panel-tag {
  min-height: 28px;
  padding: 0.2rem 0.68rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.74rem;
  font-weight: 600;
}

.panel-tag.subtle {
  background: rgba(196, 150, 79, 0.12);
  color: var(--warning);
}

.panel-tag.warm {
  background: var(--accent-soft);
  color: var(--accent);
}

.track-card,
.detail-panel,
.workspace-sidebar-card {
  align-self: start;
}

@media (max-width: 1240px) {
  .app-shell {
    grid-template-columns: 204px minmax(0, 1fr);
  }

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

@media (max-width: 1024px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: relative;
    min-height: auto;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--sidebar-line);
    overflow: visible;
  }
}

@media (max-width: 760px) {
  .main-shell {
    padding: 1rem 0.9rem 1.4rem;
  }

  .sidebar {
    padding: 1rem 0.9rem;
  }

  .brand-block {
    padding-bottom: 0.45rem;
  }

  .brand-logo-wrap {
    width: 60px;
  }

  .brand-name-cn {
    font-size: 1.24rem;
  }

  .brand-name-en {
    font-size: 0.68rem;
    letter-spacing: 0.18em;
  }

  .nav-list {
    grid-auto-flow: column;
    grid-auto-columns: minmax(120px, 1fr);
    overflow-x: auto;
    padding-bottom: 0.1rem;
  }

  .nav-item {
    min-width: 120px;
  }

  .nav-item span:last-child {
    font-size: 0.86rem;
  }

  .sidebar > .sidebar-card:not(.workspace-card) {
    display: none;
  }

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

  .panel-card,
  .metric-card,
  .hero-card {
    border-radius: 16px;
  }
}