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

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 72%, transparent), var(--surface)),
    var(--surface);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent-soft) 28%, transparent);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  color: #061211;
  font-weight: 800;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--accent) 22%, transparent);
}

.brand span {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
}

.nav-list {
  overflow: auto;
  padding: 10px;
}

.nav-item {
  display: flex;
  gap: 10px;
  align-items: center;
  width: 100%;
  min-height: 36px;
  margin-bottom: 2px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 7px;
  color: var(--muted);
  background: transparent;
  text-align: left;
}

.nav-item svg { width: 17px; height: 17px; fill: currentColor; flex: 0 0 auto; }
.nav-item.active, .nav-item:hover {
  border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
  background: linear-gradient(90deg, var(--accent-soft), color-mix(in srgb, var(--surface-2) 75%, transparent));
  color: var(--text);
}
.nav-item.active { box-shadow: inset 3px 0 0 var(--accent); }

.workspace { min-width: 0; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: var(--topbar);
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(90deg, color-mix(in srgb, var(--surface) 96%, transparent), color-mix(in srgb, var(--accent-soft) 38%, transparent)),
    color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(10px);
}

.project-heading {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  min-width: 0;
}

.project-heading p { margin: 0; color: var(--muted); }
.global-search {
  width: 100%;
  height: 40px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface-2);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 8%, transparent);
}

.topbar-actions { display: flex; gap: 10px; align-items: center; }
.project-switcher {
  max-width: 230px;
  min-height: 36px;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--surface-2);
}
.content { padding: 22px; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 18px;
}
.section-head p { max-width: 780px; margin-bottom: 0; color: var(--muted); }
.two-col { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr); gap: 16px; }
.three-col { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.grid { display: grid; gap: 14px; }
.grid.cards { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.small-screen-warning {
  display: none;
  margin: 12px 22px 0;
  padding: 10px 12px;
  border: 1px solid var(--amber);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--amber-soft);
}

@media (max-width: 1100px) {
  .app-shell { grid-template-columns: 220px minmax(0, 1fr); }
  .project-heading { grid-template-columns: minmax(180px, 240px) minmax(0, 1fr); }
  .small-screen-warning { display: block; }
}