/* ==========================================================================
   Custom layout overrides for Halo Chirpy theme
   1) Wider content container  2) Collapsible sidebar (desktop >= 850px)
   Must be loaded AFTER dist/main.css
   ========================================================================== */

:root {
  --sidebar-w: 260px;
}

/* --------------------------------------------------------------------------
   1. Widen the content container
   -------------------------------------------------------------------------- */
@media all and (min-width: 1200px) {
  #main-wrapper > .container {
    max-width: 1440px;
  }
}

@media all and (min-width: 1650px) {
  :root {
    --sidebar-w: 300px;
  }
  #main-wrapper > .container {
    max-width: 1560px;
  }
  #back-to-top {
    right: calc((100vw - 1560px) / 2 + 2rem);
  }
}

@media all and (min-width: 1400px) and (max-width: 1649px) {
  #back-to-top {
    right: calc((100vw - 1440px) / 2 + 3rem);
  }
}

/* --------------------------------------------------------------------------
   2. Sidebar collapse toggle button.
      Rendered OUTSIDE #sidebar (which is overflow-y:auto and would clip an
      overflowing child) and position:fixed so its geometry is computed
      relative to the viewport. It tracks the sidebar's right edge via
      --sidebar-w and slides to the viewport left edge when collapsed.
   -------------------------------------------------------------------------- */
#sidebar-collapse-btn {
  position: fixed;
  top: 50%;
  left: calc(var(--sidebar-w) + 8px);
  transform: translateY(-50%);
  width: 22px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 1px solid var(--btn-border-color, #e9ecef);
  border-radius: 0 8px 8px 0;
  background: var(--button-bg, #fff);
  color: var(--sidebar-btn-color, #8e8e8e);
  font-size: 0.72rem;
  cursor: pointer;
  box-shadow: 2px 0 6px rgba(0, 0, 0, 0.06);
  transition: color 0.25s ease, background-color 0.25s ease;
  z-index: 100;
}

#sidebar-collapse-btn:hover {
  color: var(--sidebar-active-color, #1d1d1d);
  background: var(--sidebar-hover-bg, #dfe9f1);
}

/* Hide the desktop toggle on mobile (sidebar is a drawer there) */
@media all and (max-width: 849px) {
  #sidebar-collapse-btn {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   3. Collapsed state (desktop only)
   -------------------------------------------------------------------------- */
@media all and (min-width: 850px) {
  #sidebar {
    transition: transform 0.4s ease;
  }
  #main-wrapper {
    transition: margin-left 0.4s ease;
  }
  #topbar-wrapper {
    transition: left 0.4s ease;
  }
  #sidebar-collapse-btn {
    transition: left 0.4s ease, color 0.25s ease, background-color 0.25s ease;
  }

  html[data-sidebar-collapsed] #sidebar {
    transform: translateX(calc(-1 * var(--sidebar-w) - 40px));
  }
  html[data-sidebar-collapsed] #sidebar-collapse-btn {
    /* Dock at the viewport left edge as the expand handle */
    left: 0;
  }
  html[data-sidebar-collapsed] #main-wrapper {
    margin-left: 0;
  }
  html[data-sidebar-collapsed] #topbar-wrapper {
    left: 0;
  }
}