.sg-app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

sg-sidebar,
sg-main-content {
  display: flex;
  flex-direction: column;
}

sg-sidebar {
  width: 260px;
  flex-shrink: 0;
}

.sg-sidebar {
  flex: 1;
  background-color: var(--color-sidebar-bg);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sg-sidebar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-border);
}

.sg-sidebar__close {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
}

.sg-sidebar__close:hover {
  background: var(--color-sidebar-hover);
}

.sg-sidebar__logo {
  height: 48px;
  width: auto;
  padding-top: 8px;
}

.sg-sidebar__logo--dark {
  display: none;
}

[data-theme="dark"] .sg-sidebar__logo--light {
  display: none;
}

[data-theme="dark"] .sg-sidebar__logo--dark {
  display: inline;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .sg-sidebar__logo--light {
    display: none;
  }
  :root:not([data-theme="light"]) .sg-sidebar__logo--dark {
    display: inline;
  }
}

.sg-sidebar__nav {
  flex: 1;
  padding: 8px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.sg-sidebar__nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--color-text);
  cursor: pointer;
}

.sg-sidebar__nav-item:hover {
  background-color: var(--color-sidebar-hover);
  color: var(--color-text);
}

.sg-sidebar__nav-item--active {
  background-color: var(--color-sidebar-active);
  font-weight: 600;
}

.sg-sidebar__footer {
  padding: 12px 16px;
  border-top: 1px solid var(--color-border);
}

sg-main-content {
  flex: 1;
  min-width: 0;
}

.sg-main-content {
  flex: 1;
  overflow: hidden;
  padding: 0;
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
}

.sg-main-content__view {
  flex: 1;
  min-height: 0;
}

.sg-theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-toggle-bg);
  color: var(--color-text);
  font-size: 14px;
}

.sg-theme-toggle:hover {
  border-color: var(--color-primary);
}

/* Mobile Header */
.sg-mobile-header {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 8px 8px;
  background: var(--color-sidebar-bg);
  border-bottom: 1px solid var(--color-border);
}

.sg-mobile-header__toggle {
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
}

.sg-mobile-header__toggle:hover {
  background: var(--color-sidebar-hover);
}

.sg-mobile-header__logo {
  height: 32px;
  width: auto;
}

.sg-mobile-header__logo--dark {
  display: none;
}

[data-theme="dark"] .sg-mobile-header__logo--light {
  display: none;
}

[data-theme="dark"] .sg-mobile-header__logo--dark {
  display: inline;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .sg-mobile-header__logo--light {
    display: none;
  }
  :root:not([data-theme="light"]) .sg-mobile-header__logo--dark {
    display: inline;
  }
}

/* Backdrop */
.sg-app-layout__backdrop {
  display: none;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .sg-mobile-header {
    display: flex;
  }

  .sg-app-layout {
    height: calc(100vh - 49px);
  }

  sg-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    z-index: 110;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

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

  .sg-sidebar__close {
    display: block;
  }

  .sg-app-layout__backdrop {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 109;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
  }

  .sg-app-layout__backdrop--visible {
    opacity: 1;
    visibility: visible;
  }
}