/* ============================================================================
   BioForge v2 — App Shell Layout
   Sidebar + topbar + content area — Linear/Vercel-inspired chrome
   ============================================================================ */

/* --------------------------------------------------------------------------
   App Shell
   -------------------------------------------------------------------------- */

.app {
  display: flex;
  min-height: 100vh;
}

/* --------------------------------------------------------------------------
   Sidebar
   -------------------------------------------------------------------------- */

.sidebar {
  width: 240px;
  background: var(--bg-sidebar);
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  z-index: var(--z-sticky);
  overflow-y: auto;
  border-right: 1px solid var(--sidebar-border);
}

/* ---------- Brand ---------- */

.sidebar-brand {
  padding: 20px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--sidebar-border);
  flex-shrink: 0;
}

.sidebar-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF9900, #EC7211);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 15px;
  font-weight: var(--font-bold);
  flex-shrink: 0;
  letter-spacing: -0.02em;
}

.sidebar-brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-brand-name {
  color: var(--sidebar-text-strong);
  font-size: 18px;
  font-weight: var(--font-semibold);
  line-height: 1;
  letter-spacing: -0.02em;
}

.sidebar-brand-version {
  font-size: 10px;
  font-weight: var(--font-semibold);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1;
}

/* ---------- Navigation ---------- */

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-section-label {
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--sidebar-text-muted);
  padding: 16px 12px 8px;
  font-weight: var(--font-semibold);
  line-height: 1;
  user-select: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  cursor: pointer;
  transition: background var(--transition-base),
              color var(--transition-base);
  font-size: 13px;
  font-weight: var(--font-medium);
  text-decoration: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  user-select: none;
  position: relative;
}

.nav-item:hover {
  background: var(--sidebar-hover-bg);
  color: var(--sidebar-text-strong);
}

.nav-item.active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-active-text);
  padding-left: 9px;
  border-left: 3px solid var(--sidebar-active-border);
}

.nav-item.active .nav-icon {
  opacity: 1;
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.7;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-icon svg {
  width: 18px;
  height: 18px;
}

.nav-badge {
  margin-left: auto;
  height: 18px;
  min-width: 18px;
  padding: 0 5px;
  background: rgba(255, 153, 0, 0.2);
  color: #FF9900;
  font-size: 11px;
  font-weight: var(--font-semibold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* ---------- Sidebar Footer ---------- */

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--sidebar-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, #FF9900, #EC7211);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 12px;
  font-weight: var(--font-semibold);
  flex-shrink: 0;
}

.sidebar-user-info {
  display: flex;
  flex-direction: column;
  gap: 1px;
  min-width: 0;
  flex: 1;
}

.sidebar-user-name {
  color: var(--sidebar-text-strong);
  font-size: 13px;
  font-weight: var(--font-medium);
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-user-role {
  color: var(--sidebar-text-muted);
  font-size: 11px;
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.theme-toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--sidebar-text-muted);
  cursor: pointer;
  transition: color var(--transition-base),
              background var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-left: auto;
}

.theme-toggle:hover {
  color: var(--sidebar-text-strong);
  background: var(--sidebar-hover-bg);
}

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

/* --------------------------------------------------------------------------
   Main Content Area
   -------------------------------------------------------------------------- */

.main {
  margin-left: 240px;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: var(--bg-app);
}

/* ---------- Top Bar ---------- */

.topbar {
  height: 56px;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  flex-shrink: 0;
}

/* Topbar sections */

.topbar-left {
  flex: 0 1 auto;
  display: flex;
  align-items: center;
  min-width: 0;
}

.topbar-center {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0 16px;
}

.topbar-right {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

/* Topbar user chip */
.topbar-user {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-base);
  user-select: none;
}

.topbar-user:hover {
  background: var(--bg-surface-raised);
}

/* Breadcrumbs */

.breadcrumbs {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-tertiary);
  min-width: 0;
}

.breadcrumb-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.breadcrumb-link:hover {
  color: var(--text-primary);
}

.breadcrumb-separator {
  color: var(--text-tertiary);
  font-size: 12px;
  user-select: none;
  flex-shrink: 0;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: var(--font-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Search Trigger */

.search-trigger {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-surface-raised);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: 13px;
  min-width: 240px;
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base);
  user-select: none;
}

.search-trigger:hover {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 1px var(--border-focus);
}

.search-trigger-text {
  flex: 1;
  text-align: left;
}

.search-trigger kbd {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: var(--font-medium);
  color: var(--text-tertiary);
  background: var(--bg-surface);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  line-height: 1.4;
  flex-shrink: 0;
}

/* Topbar Actions */

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.topbar-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base),
              color var(--transition-base);
  position: relative;
}

.topbar-icon-btn:hover {
  background: var(--bg-surface-raised);
  color: var(--text-primary);
}

.topbar-icon-btn svg {
  width: 18px;
  height: 18px;
}

/* Notification dot on icon buttons */
.topbar-icon-btn .notification-dot {
  position: absolute;
  top: 7px;
  right: 7px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  border: 1.5px solid var(--bg-surface);
}

.topbar-avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 11px;
  font-weight: var(--font-semibold);
  flex-shrink: 0;
  cursor: pointer;
  transition: box-shadow var(--transition-base);
}

.topbar-avatar:hover {
  box-shadow: 0 0 0 2px var(--bg-surface), 0 0 0 4px var(--accent-light);
}

/* ---------- Content Area ---------- */

.content {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}

.content-inner {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ---------- View Switching ---------- */

.view {
  display: none;
}

.view.active {
  display: block;
}

/* --------------------------------------------------------------------------
   Page Headers (for use inside .content)
   -------------------------------------------------------------------------- */

.page-header {
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
}

.page-description {
  font-size: var(--text-md);
  color: var(--text-secondary);
  margin-top: var(--space-2);
  line-height: var(--leading-relaxed);
  max-width: 640px;
}

/* --------------------------------------------------------------------------
   Responsive — Collapse sidebar on narrow screens
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main {
    margin-left: 0;
  }

  .content {
    padding: 24px 16px;
  }

  .search-trigger {
    min-width: 180px;
  }
}

@media (max-width: 768px) {
  .topbar {
    padding: 0 16px;
    gap: 12px;
  }

  .search-trigger {
    min-width: 0;
    flex: 1;
  }

  .search-trigger-text {
    display: none;
  }

  .content {
    padding: 20px 12px;
  }
}