/* Campfire-inspired panel shell — sidebar + fixed nav + scrolling main */

.panel-shell {
  --panel-sidebar-width: 0;
  --panel-nav-height: 3.75rem;

  block-size: 100dvh;
  display: grid;
  grid-template-areas:
    "nav nav"
    "main main";
  grid-template-columns: 1fr;
  grid-template-rows: min-content 1fr;
  max-block-size: 100dvh;
  overflow: hidden;
}

@media (min-width: 100ch) {
  .panel-shell {
    --panel-sidebar-width: min(19rem, 26vw);

    grid-template-areas:
      "sidebar nav"
      "sidebar main";
    grid-template-columns: var(--panel-sidebar-width) 1fr;
    transition: grid-template-columns 280ms ease;
  }

  .panel-shell--sidebar-collapsed {
    --panel-sidebar-width: 0;
    grid-template-columns: 0 1fr;
  }

  .panel-shell--sidebar-collapsed .sidebar {
    border-inline-end: none;
    opacity: 0;
    overflow: hidden;
    pointer-events: none;
    visibility: hidden;
  }
}

.panel-nav {
  align-items: center;
  background-color: var(--color-nav-bg);
  backdrop-filter: blur(16px);
  border-block-end: 1px solid var(--color-border-dark);
  display: flex;
  grid-area: nav;
  inset-block-start: 0;
  min-block-size: var(--panel-nav-height);
  padding-inline: max(var(--inline-space), 1vw);
  position: sticky;
  z-index: 4;
}

.panel-nav__inner {
  align-items: center;
  display: flex;
  gap: var(--block-space);
  inline-size: 100%;
  justify-content: space-between;
}

.panel-nav__menu {
  --btn-border-color: transparent;
  --btn-border-radius: 50%;
  --btn-padding: 0;
  align-items: center;
  aspect-ratio: 1;
  block-size: 2.375rem;
  flex-shrink: 0;
  inline-size: 2.375rem;
  justify-content: center;
  line-height: 0;
  padding: 0;
}

.panel-nav__menu [hidden] {
  display: none;
}

.panel-nav__menu .icon {
  block-size: 1.125rem;
  inline-size: 1.125rem;
}

.panel-nav__title {
  flex: 1;
  min-inline-size: 0;
}

.panel-nav__heading {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (min-width: 100ch) {
  .panel-nav__heading {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
  }
}

.panel-nav__brand {
  font-size: 1rem;
}

.panel-nav__actions {
  align-items: center;
  display: flex;
  gap: 0.75rem;
}

.panel-nav__trial {
  background-color: var(--color-surface);
  border-radius: 999px;
  border: 1px solid var(--color-border-dark);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.65rem;
  text-decoration: none;
}

.panel-nav__trial:hover {
  border-color: var(--color-border-darker);
  color: var(--color-text);
  text-decoration: none;
}

.panel-main {
  align-content: start;
  background-color: var(--color-canvas);
  display: flex;
  flex-direction: column;
  grid-area: main;
  min-block-size: 0;
  -webkit-overflow-scrolling: touch;
  overflow: auto;
  overscroll-behavior: contain;
  padding: var(--block-space-double) max(var(--inline-space), 1vw);
}

@media (min-width: 100ch) {
  .panel-main {
    border-inline-start: 1px solid var(--color-border-dark);
    padding-inline: clamp(1.5rem, 3vw, 2.5rem);
  }
}

.panel-main__content {
  inline-size: 100%;
  margin-inline: auto;
  max-inline-size: none;
}

.skip-nav {
  inset-block-start: 0.5rem;
  inset-inline-start: -999em;
  position: absolute;
  z-index: 20;
}

.skip-nav:focus {
  inset-inline-start: 0.5rem;
}

.panel-shell--sidebar-open::before {
  background-color: var(--color-overlay);
  content: "";
  inset: 0;
  position: fixed;
  z-index: 5;
}

@media (min-width: 100ch) {
  .panel-shell--sidebar-open::before {
    display: none;
  }
}

.panel-main .toast-stack {
  inset-block-start: calc(var(--panel-nav-height) + 0.75rem);
  inset-inline-end: max(var(--inline-space), 1vw);
  z-index: 100;
}