/* Portal shell: dark sidebar, white top bar, scrolling content, footer line. */

.t-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  background: var(--color-bg);
}

/* ---------- Sidebar ---------- */
.t-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--color-sidebar);
  color: var(--color-sidebar-text);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.t-sidebar__brand {
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--color-sidebar-border);
}

.t-sidebar__brand .t-brand__eyebrow {
  color: var(--color-sidebar-muted);
  opacity: 1;
}

.t-sidebar__brand .t-brand__name {
  color: var(--color-sidebar-text);
}

.t-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4) var(--space-3);
}

.t-sidebar__bottom {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-3);
}

.t-credits {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-sidebar-raised);
}

.t-credits__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.t-credits__head .t-icon {
  width: 18px;
  height: 18px;
}

.t-credits__value {
  margin-left: auto;
  font-variant-numeric: tabular-nums;
  color: var(--color-sidebar-text);
}

.t-credits .t-progress {
  background: color-mix(in srgb, var(--color-sidebar-muted) 25%, transparent);
}

.t-credits__link {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: color-mix(in srgb, var(--brand-accent) 50%, white);
  text-decoration: none;
}

.t-credits__link:hover {
  color: var(--color-sidebar-text);
}

.t-sidebar__user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-sidebar-border);
}

.t-sidebar__user .t-avatar {
  background: var(--brand-accent);
  color: var(--color-on-accent);
}

.t-sidebar__user-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.t-sidebar__user-name {
  font-weight: 600;
  font-size: var(--font-size-sm);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-sidebar__user-mail {
  font-size: var(--font-size-xs);
  color: var(--color-sidebar-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-sidebar__user .t-badge {
  align-self: flex-start;
  margin-top: 2px;
}

.t-sidebar__user form {
  display: contents;
}

.t-sidebar__signout {
  color: var(--color-sidebar-muted);
}

.t-sidebar__signout:hover {
  background: var(--color-sidebar-raised);
  color: var(--color-sidebar-text);
}

/* ---------- Body, top bar, footer ---------- */
.t-shell__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.t-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--topbar-height);
  padding: var(--space-3) var(--space-7);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.t-topbar__start {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.t-topbar__heading {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.t-topbar__title {
  margin: 0;
  font-size: var(--font-size-h2);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.t-topbar__tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
}

.t-nav-toggle {
  display: none;
}

.t-main {
  flex: 1;
  padding: var(--space-7);
  width: 100%;
}

.t-footer {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-7);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.t-footer .t-icon {
  width: var(--icon-size-sm);
  height: var(--icon-size-sm);
}

/* ---------- Small screens: sidebar becomes a drop-down menu ---------- */
@media (max-width: 900px) {
  .t-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .t-sidebar {
    position: fixed;
    inset: var(--topbar-height) 0 0 0;
    z-index: 20;
    height: auto;
    display: none;
  }

  .t-shell--nav-open .t-sidebar {
    display: flex;
  }

  .t-topbar {
    padding: var(--space-3) var(--space-4);
  }

  .t-main {
    padding: var(--space-5) var(--space-4);
  }

  .t-footer {
    padding: var(--space-4);
  }

  .t-nav-toggle {
    display: inline-flex;
  }
}