* {
  box-sizing: border-box;
}

.pams-shell {
  display: flex;
  align-items: flex-start;
  min-height: calc(100vh - 64px);
}

.pams-header {
  height: 64px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  z-index: 20;
}

.pams-header-brand {
  display: flex;
  align-items: center;
  gap: 8px;
}

.pams-header-brand img {
  height: 32px;
  width: auto;
}

.pams-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: #FFFFFF;
  border-right: 1px solid var(--color-border);
  align-self: stretch;
  padding-top: 16px;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  padding: 16px 20px 8px;
}

.pams-sidebar-nav {
  display: flex;
  flex-direction: column;
}

.pams-sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 44px;
  padding: 0 20px;
  color: var(--color-text-primary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  transition: all 0.2s ease;
  border-right: 3px solid transparent;
}

.pams-sidebar-nav a:hover {
  color: var(--color-navy);
  background: #F8FAFC;
}

.pams-sidebar-nav a.active {
  color: var(--color-navy);
  font-weight: var(--weight-semibold);
  background: #EFF6FF;
  border-right: 3px solid var(--color-navy);
}

.pams-content {
  flex: 1;
  min-width: 0;
  padding: 32px 32px;
  background: var(--color-bg);
}

.pams-container {
  max-width: 1180px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .pams-shell {
    flex-direction: column;
  }
  .pams-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .pams-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}