.app-shell {
  width: min(100% - 2rem, var(--content-width));
  margin: 0 auto;
}

.app-tv-mode .app-shell {
  width: min(100% - 1.5rem, 100rem);
}

.app-tv-mode .app-site-header,
.app-tv-mode .app-footer,
.app-tv-mode .app-messages {
  display: none;
}

.app-tv-mode .app-main {
  padding: 0.75rem 0;
}

.app-tv-home .app-stack {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 0.75rem 0 1rem;
  margin-bottom: 1rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.app-main {
  padding: 2rem 0 3rem;
}

.app-messages {
  padding-top: 1.25rem;
}

.app-section {
  margin-bottom: 2rem;
}

.app-section-title {
  margin-bottom: 0.45rem;
  font-size: clamp(1.75rem, 3vw, 2.35rem);
}

.app-section-intro {
  max-width: 48rem;
  margin: 0 auto;
  color: var(--color-text-soft);
}

.app-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.app-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.app-toolbar-actions form {
  margin: 0;
}

.app-toolbar-heading {
  display: grid;
  gap: 0.35rem;
}

.app-toolbar-context {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text-soft);
  font-size: 0.9rem;
  font-weight: 600;
}

.app-home-heading {
  gap: 0.45rem;
}

.app-home-toolbar {
  align-items: center;
  gap: 1rem;
}

.app-tv-home .app-home-toolbar {
  margin-bottom: 0;
}

.app-grid {
  display: grid;
  gap: 1.5rem;
}

.app-grid-cards {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.app-event-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.app-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr);
  gap: 1.5rem;
}

.app-split-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(0, 1.1fr);
  gap: 1.5rem;
  align-items: stretch;
}

.app-info-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.app-sidebar-stack {
  display: grid;
  gap: 1.5rem;
}

.app-stack {
  display: grid;
  gap: 1rem;
}

.app-config-layout {
  display: grid;
  grid-template-columns: minmax(13rem, 16rem) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.app-config-sidebar {
  min-width: 0;
  position: sticky;
  top: clamp(7rem, 18vh, 10rem);
  align-self: start;
}

.app-config-sections {
  display: grid;
  gap: 1.5rem;
}

.app-config-anchor-nav {
  z-index: 20;
  display: grid;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(10px);
}

.app-config-anchor-heading {
  color: var(--color-text-soft);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.app-config-anchor-link {
  display: inline-flex;
  align-items: center;
  width: 100%;
  min-height: 2.65rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid rgba(31, 95, 122, 0.14);
  border-radius: var(--radius-sm);
  background: var(--color-surface-soft);
  color: var(--color-primary);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.1;
}

.app-config-anchor-link:hover,
.app-config-anchor-link:focus {
  background: var(--color-accent-soft);
  border-color: rgba(31, 95, 122, 0.26);
}

.app-config-anchor-section {
  scroll-margin-top: 9rem;
}

.app-config-panel-grid {
  display: grid;
  grid-template-columns: minmax(16rem, 22rem) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.app-config-panel-aside {
  display: grid;
  gap: 1rem;
}

.app-config-list {
  display: grid;
  gap: 0.85rem;
}

.app-config-list .app-pill-panel .app-toolbar {
  margin-bottom: 0;
  align-items: start;
}

.app-config-discreet-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

.app-config-discreet-toggle::after {
  content: "\f107";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  transition: transform var(--transition-base);
}

details[open] > .app-config-discreet-toggle::after {
  transform: rotate(180deg);
}

.app-config-discreet-toggle::-webkit-details-marker {
  display: none;
}

.app-visual-thresholds-grid {
  gap: 0.85rem;
}

.app-visual-threshold-row {
  display: grid;
  grid-template-columns: minmax(5.5rem, 7rem) minmax(5.25rem, 7rem);
  align-items: end;
  gap: 0.75rem;
  justify-content: start;
}

.app-form-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}

.app-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.app-btn-row-center {
  justify-content: center;
}

.app-auth-inline-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.app-hidden {
  display: none;
}

.app-site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  backdrop-filter: blur(18px);
  background: var(--color-surface-soft-strong);
  border-bottom: 1px solid rgba(214, 227, 234, 0.95);
}

.navbar.app-navbar {
  padding: 0.95rem 0;
  background: transparent;
}

.app-navbar .navbar-brand,
.navbar-dark .navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-primary);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.app-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-pill);
  color: var(--color-surface);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  box-shadow: var(--shadow-button);
}

.app-brand-text small {
  display: block;
  margin-top: 0.1rem;
  color: var(--color-text-soft);
  font-family: "Montserrat", "Segoe UI", sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.app-navbar .navbar-toggler {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
}

.app-navbar .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(6,56,76,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.app-navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(31, 95, 122, 0.15);
}

.app-navbar .navbar-nav {
  gap: 0.25rem;
}

.app-navbar .nav-link,
.app-navbar .dropdown-item,
.navbar-dark .nav-link {
  color: var(--color-text);
  font-weight: 600;
}

.app-navbar .nav-link {
  border-radius: var(--radius-pill);
  padding: 0.6rem 0.95rem;
}

.app-navbar .nav-link:hover,
.app-navbar .nav-link:focus,
.app-navbar .nav-link.active,
.app-navbar .show > .nav-link {
  color: var(--color-primary);
  background: var(--color-accent-soft);
}

.app-navbar .dropdown-menu {
  margin-top: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.app-navbar .dropdown-item {
  padding: 0.65rem 1rem;
}

.app-navbar .dropdown-item:hover,
.app-navbar .dropdown-item:focus {
  background: var(--color-accent-soft);
  color: var(--color-primary);
}

footer.app-footer {
  position: relative;
  margin-top: auto;
  padding: 0.7rem 0 0.85rem;
  color: rgba(255, 255, 255, 0.78);
  background: linear-gradient(180deg, var(--color-primary) 0%, #082a39 100%);
}

.app-footer-minimal {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 2rem;
  text-align: center;
}

.app-footer-minimal p {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.82rem;
  line-height: 1.2;
}

@media (max-width: 991.98px) {
  .app-navbar .navbar-collapse {
    margin-top: 1rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-card);
  }

  .app-config-layout,
  .app-detail-grid,
  .app-split-layout,
  .app-config-panel-grid,
  .app-info-grid,
  .app-visual-threshold-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-main {
    padding-top: 1.5rem;
  }

  .app-shell {
    width: min(100% - 1.25rem, var(--content-width));
  }

  .app-toolbar,
  .app-toolbar-actions,
  .app-btn-row,
  .app-auth-inline-actions,
  .app-form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .app-config-anchor-nav {
    backdrop-filter: none;
  }

  .app-config-sidebar {
    position: static;
  }

  .app-auth-footer {
    text-align: left !important;
  }
}