.app { display: flex; min-height: 100vh; }
.main { flex: 1; min-width: 0; }
.page { display: none; padding: 32px 40px; max-width: 1280px; }
.page.active { display: block; }

.sidebar {
  width: 220px; background: var(--w); border-right: 1px solid var(--b);
  display: flex; flex-direction: column; flex-shrink: 0;
  position: sticky; top: 0; height: 100vh;
}
.sb-brand { padding: 22px 20px 18px; border-bottom: 1px solid var(--b); }
.sb-brand-name { font-family: 'Jost', sans-serif; font-size: 24px; font-weight: 400; letter-spacing: 0.05em; color: var(--t); }
.sb-brand-sub { font-size: 10px; color: var(--t3); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 3px; font-weight: 500; }

.sb-nav { flex: 1; padding: 10px 0; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 10px 18px;
  font-size: 13px; color: var(--t2); cursor: pointer; user-select: none;
  border-left: 2px solid transparent; transition: all 0.15s;
}
.nav-item:hover { background: var(--off); color: var(--t); }
.nav-item.active { background: var(--navyl); color: var(--navy); font-weight: 500; border-left-color: var(--navy); }
.nav-icon { width: 16px; height: 16px; stroke-width: 1.5; flex-shrink: 0; }

.nav-section { margin-top: 6px; }
.nav-parent {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px; font-size: 13px; color: var(--t2); cursor: pointer;
  user-select: none; border-left: 2px solid transparent; transition: all 0.15s;
}
.nav-parent:hover { background: var(--off); color: var(--t); }
.nav-parent-left { display: flex; align-items: center; gap: 10px; }
.nav-chevron { font-size: 10px; transition: transform 0.2s; color: var(--t3); }
.nav-parent.open .nav-chevron { transform: rotate(180deg); }
.nav-children { display: none; padding: 2px 0 6px; }
.nav-parent.open + .nav-children { display: block; }
.nav-child {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 18px 8px 44px; font-size: 12px; color: var(--t2);
  cursor: pointer; user-select: none; border-left: 2px solid transparent; transition: all 0.15s;
}
.nav-child:hover { background: var(--off); color: var(--t); }
.nav-child.active { background: var(--navyl); color: var(--navy); font-weight: 500; border-left-color: var(--navy); }

.sb-foot { padding: 12px 12px; border-top: 1px solid var(--b); font-size: 11px; color: var(--t3); position: relative; }
.sb-user-switcher { display: flex; align-items: center; justify-content: space-between; padding: 6px 8px; border-radius: 6px; }
.sb-user-info { display: flex; align-items: center; gap: 10px; }
.sb-user-name { font-size: 12px; font-weight: 500; color: var(--t); line-height: 1.3; }
.sb-user-role { font-size: 10px; color: var(--t3); line-height: 1.3; }
.sb-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--green); flex-shrink: 0; }
.sb-signout-btn {
  display: block; width: 100%; text-align: left; padding: 8px 12px; margin-top: 6px;
  font-size: 11px; color: var(--t3); background: none; border: none; cursor: pointer;
  font-family: 'Jost', sans-serif; border-radius: 4px; transition: all 0.15s;
}
.sb-signout-btn:hover { background: var(--off); color: var(--red); }

.page-header { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 20px; gap: 16px; }
.page-title { font-family: 'Jost', sans-serif; font-size: 22px; font-weight: 400; letter-spacing: 0.02em; }
.page-sub { font-size: 11px; color: var(--t3); margin-top: 4px; letter-spacing: 0.02em; }
.page-actions { display: flex; gap: 8px; align-items: center; }

.loading-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 12px;
}
.loading-wrap .brand { font-size: 24px; font-weight: 400; letter-spacing: 0.05em; }
.loading-wrap .status { font-size: 12px; color: var(--t2); }
.loading-wrap .error { color: var(--red); font-size: 12px; }
.loading-spinner {
  width: 20px; height: 20px; border: 2px solid var(--b); border-top-color: var(--t);
  border-radius: 50%; animation: spin 0.6s linear infinite;
}
.page-loading {
  display: flex; align-items: center; justify-content: center;
  padding: 80px 0; color: var(--t3); font-size: 12px; gap: 10px;
}