.app-layout {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 72px 1fr;
  position: relative;
  z-index: 1;
}

.sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 18px 10px;
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  box-shadow: 10px 0 24px rgba(0, 0, 0, 0.08);
  position: sticky;
  top: 0;
  height: 100vh;
  z-index: 1200;
}

.sidebar-logo img {
  width: 36px;
  height: 36px;
  display: block;
}

.sidebar-divider {
  width: 100%;
  height: 1px;
  background: var(--border);
}

.sidebar-icons {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.sidebar-icons--bottom {
  margin-top: auto;
  padding-bottom: 8px;
}

.sidebar-icon {
  width: 44px;
  height: 44px;
  border-radius: 0;
  border: 1px solid transparent;
  background: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.sidebar-icon img {
  width: 32px;
  height: 32px;
  opacity: 0.55;
  transition: opacity 0.2s ease;
}

.sidebar-icon:hover {
  background: rgba(0, 0, 0, 0.05);
  border-color: var(--border);
}

.sidebar-icon:hover img {
  opacity: 1;
}

.sidebar-icon.is-active {
  background: rgba(0, 0, 0, 0.08);
}

.sidebar-panel {
  position: fixed;
  top: 0;
  left: 72px;
  height: 100vh;
  width: 260px;
  border: 1px solid var(--border);
  border-left: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px) saturate(120%);
  box-shadow: 12px 0 24px rgba(0, 0, 0, 0.08);
  opacity: 0;
  transform: translateX(-12px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
  z-index: 1100;
}

.sidebar-panel.is-visible {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.sidebar-panel-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 24px 22px;
  gap: 12px;
}

.sidebar-panel-inner.is-bottom {
  justify-content: flex-end;
}

.sidebar-panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.sidebar-panel-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}

.sidebar-panel-link {
  background: transparent;
  border: none;
  padding: 0;
  text-align: left;
  color: var(--text-secondary);
  font-size: 12px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.mobile-nav-fab {
  position: fixed;
  right: 20px;
  bottom: 20px;
  width: 58px;
  height: 58px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(14px) saturate(130%);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2100;
  transition: opacity 0.16s ease, transform 0.16s ease;
}

.mobile-nav-fab.is-hidden {
  opacity: 0;
  transform: scale(0.92);
  pointer-events: none;
}

.mobile-nav-fab-lines {
  display: grid;
  gap: 5px;
}

.mobile-nav-fab-lines span {
  width: 20px;
  height: 2px;
  background: rgba(17, 17, 17, 0.88);
  display: block;
}

.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(242, 244, 248, 0.44);
  backdrop-filter: blur(18px) saturate(120%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.16s ease;
  z-index: 2050;
}

.mobile-nav-overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-shell {
  width: min(560px, 100%);
  display: grid;
  gap: 0;
  justify-items: center;
}

.mobile-nav-menu {
  width: min(420px, 100%);
  display: grid;
  gap: 14px;
  transition: opacity 0.1s ease, transform 0.1s ease;
}

.mobile-nav-menu.is-switching {
  opacity: 0;
  transform: translateY(6px);
}

.mobile-nav-option {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  min-height: auto;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 15px;
  cursor: pointer;
  transition: color 0.14s ease, opacity 0.14s ease, transform 0.14s ease;
}

.mobile-nav-option:hover,
.mobile-nav-option:focus-visible {
  color: var(--text-secondary);
  transform: translateY(-1px);
}

.mobile-nav-option.is-submenu {
  font-size: 14px;
}

.mobile-nav-controls {
  position: fixed;
  right: 20px;
  bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 2120;
}

.mobile-nav-control {
  width: 52px;
  height: 52px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  backdrop-filter: blur(14px) saturate(130%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  transition: opacity 0.14s ease, transform 0.14s ease;
}

.mobile-nav-control.is-hidden {
  opacity: 0;
  transform: scale(0.9);
  pointer-events: none;
}

.mobile-nav-backlink {
  margin-top: 18px;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--text-muted);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  cursor: pointer;
  transition: color 0.14s ease, opacity 0.14s ease;
}

.mobile-nav-backlink:hover,
.mobile-nav-backlink:focus-visible {
  color: var(--text-primary);
}

.mobile-nav-backlink.is-hidden {
  opacity: 0;
  pointer-events: none;
}

body.is-mobile-nav-open,
html.is-mobile-nav-open {
  overflow: hidden;
}

.content {
  padding: 36px 16px 36px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.content-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  width: 100%;
}

.content-heading {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  text-align: center;
}

.content-header-line {
  flex: 1 1 0;
  align-self: end;
  height: 1px;
  background: #566c89;
  opacity: 0;
  transform: scaleX(0);
  transition: transform 0.28s ease, opacity 0.28s ease;
}

.content-header-line:first-child {
  transform-origin: left center;
}

.content-header-line:last-child {
  transform-origin: right center;
}

.content-header.is-collapsing .content-header-line {
  opacity: 0.2;
  transform: scaleX(0);
  transition-duration: 0.08s;
}

.content-header.is-expanded .content-header-line {
  opacity: 0.8;
  transform: scaleX(1);
}

.content-body {
  display: flex;
  flex-direction: column;
  gap: 24px;
  opacity: 1;
  transition: opacity 0.16s ease;
}

.content-body.is-fading {
  opacity: 0;
}

.content-empty {
  max-width: 640px;
  margin: 0 auto;
  width: 100%;
}

.content-title {
  margin: 0;
  font-size: 28px;
  text-transform: uppercase;
  letter-spacing: 3px;
  line-height: 1.1;
  min-height: 1.1em;
}

.content-subtitle {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.4;
  min-height: 1.4em;
}

@media (max-width: 860px) {
  .app-layout {
    grid-template-columns: 1fr;
  }

  .sidebar,
  .sidebar-panel {
    display: none !important;
  }

  .content {
    padding-bottom: 96px;
  }

  .mobile-nav-fab,
  .mobile-nav-overlay {
    display: flex;
  }
}