/* Controls overlay the row, so shelves that fit never lose usable width. */
.shelf-scroll-host {
  position: relative;
  --shelf-scroll-button-width: 26px;
}

/* Storage drawers stay anchored to the storage container, not a box group. */
.storage-group.shelf-scroll-host {
  position: static;
}

.shelf-scroll-controls {
  --scroll-button-text: var(--case-button-text, var(--site-text-secondary));
  --scroll-button-bg: var(--case-button-bg, var(--site-control));
  --scroll-button-border: var(--case-button-border, var(--site-border-strong));
  --scroll-button-border-width: var(--case-button-border-width, 1px);
  --scroll-button-hover: var(--case-button-accent, var(--site-hover));
  --scroll-button-hover-border: var(--case-button-accent, var(--site-border-hover));
  --scroll-button-focus: var(--case-button-accent, var(--site-focus));
  position: absolute;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  box-sizing: border-box;
}

/* The add-page trophy catalog follows the page palette, not a case style. */
.available-trophy-grid+.shelf-scroll-controls {
  --scroll-button-text: var(--site-text-secondary);
  --scroll-button-bg: var(--site-control);
  --scroll-button-border: var(--site-border-strong);
  --scroll-button-border-width: 1px;
  --scroll-button-hover: var(--site-hover);
  --scroll-button-hover-border: var(--site-border-hover);
  --scroll-button-focus: var(--site-focus);
}

.shelf-scroll-controls[hidden] {
  display: none;
}

.shelf-scroll-controls button {
  display: grid;
  place-items: center;
  flex: 0 0 var(--shelf-scroll-button-width);
  width: var(--shelf-scroll-button-width);
  min-width: 0;
  position: relative;
  height: var(--shelf-scroll-button-height, 64px);
  max-height: 100%;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--scroll-button-text);
  cursor: pointer;
  pointer-events: auto;
  touch-action: none;
  user-select: none;
  font-size: 22px;
  line-height: 1;
}

/* Only case shelves use trophy-height arrows resting on the shelf bar. */
.trophy-rail+.shelf-scroll-controls {
  align-items: flex-end;
}

.trophy-rail+.shelf-scroll-controls button {
  height: 100%;
  max-height: min(100%, var(--shelf-scroll-trophy-height, 102px));
}

.shelf-scroll-controls button::before {
  content: "";
  position: absolute;
  inset-block: 0;
  left: 0;
  width: var(--shelf-scroll-visible-width, var(--shelf-scroll-button-width));
  box-sizing: border-box;
  border: var(--scroll-button-border-width) solid var(--scroll-button-border);
  border-radius: inherit;
  background: var(--scroll-button-bg);
  pointer-events: none;
}

.shelf-scroll-controls button:last-child::before {
  left: auto;
  right: 0;
}

.shelf-scroll-controls button:hover {
  background: transparent;
}

.shelf-scroll-controls button:hover:not(:disabled)::before {
  border-color: var(--scroll-button-hover-border);
  background: color-mix(in srgb, var(--scroll-button-bg) 80%, var(--scroll-button-hover));
}

.shelf-scroll-controls button:focus-visible {
  outline: none;
}

.shelf-scroll-controls button:focus-visible::before {
  outline: 2px solid var(--scroll-button-focus);
  outline-offset: -2px;
}

.shelf-scroll-controls button svg {
  position: absolute;
  top: calc(50% - 9px);
  left: calc((var(--shelf-scroll-visible-width, var(--shelf-scroll-button-width)) - 18px) / 2);
  display: block;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.shelf-scroll-controls button:last-child svg {
  left: auto;
  right: calc((var(--shelf-scroll-visible-width, var(--shelf-scroll-button-width)) - 18px) / 2);
}

.shelf-scroll-controls button:disabled {
  opacity: .3;
  cursor: default;
}

.shelf-scroll-rail {
  --shelf-scroll-inset: 0px;
}

.shelf-scroll-rail.has-shelf-scroll-overflow {
  --shelf-scroll-inset: calc(var(--shelf-scroll-visible-width, var(--shelf-scroll-button-width)) + 4px);
}

/* Add breathing room only after the unpadded content genuinely overflows. */
.site-page .trophy-rail.has-shelf-scroll-overflow {
  padding-inline: calc(var(--shelf-scroll-base-padding, 16px) + var(--shelf-scroll-inset));
}

.site-page .available-trophy-grid.has-shelf-scroll-overflow,
.site-page .stored-trophy-rail.has-shelf-scroll-overflow,
.site-page .hidden-shelf-list.has-shelf-scroll-overflow,
.site-page .compact-trophy-box-list.has-shelf-scroll-overflow {
  padding-inline: var(--shelf-scroll-inset);
}

@media (pointer: coarse) {
  .shelf-scroll-host {
    --shelf-scroll-button-width: 44px;
    --shelf-scroll-button-height: 96px;
  }

  .shelf-scroll-host:has(> .trophy-rail) {
    --shelf-scroll-visible-width: 20px;
  }

}

.twitch-extension-body .shelf-scroll-host:has(> .trophy-rail) {
  --shelf-scroll-visible-width: 20px;
}

.is-mobile-extension .shelf-scroll-host {
  --shelf-scroll-button-width: 44px;
  --shelf-scroll-button-height: 96px;
}

/* Twitch reserves sideways swipes for changing extensions. */
.is-mobile-extension .shelf-scroll-rail {
  touch-action: pan-y;
}

@media (max-width: 480px) {
  .site-page .trophy-rail {
    --shelf-scroll-base-padding: 8px;
  }
}

.shelf-scroll-rail.is-shelf-drag-pending {
  user-select: none;
}

.shelf-scroll-rail.is-shelf-dragging,
.shelf-scroll-rail.is-shelf-dragging * {
  cursor: grabbing !important;
}