/* Header & top-bar chrome: the topbar/game-header grid, the refreshable
   title, header actions, and the sound-toggle control. Split out of
   styles.css (platform chrome) to keep it under its ceiling; linked
   immediately after styles.css so cascade order is unchanged. */

.topbar,
.game-header {
  display: grid;
  grid-template-columns: auto auto 1fr auto;
  gap: 10px;
  align-items: center;
}

.topbar h2 {
  min-width: 0;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.refreshable-title {
  cursor: pointer;
  user-select: none;
  text-decoration: underline dotted transparent;
  text-underline-offset: 0.14em;
}

.refreshable-title:hover,
.refreshable-title:focus-visible {
  text-decoration-color: currentColor;
}

.game-header > div {
  min-width: 0;
  text-align: center;
}

.header-actions {
  display: flex;
  gap: 6px;
  justify-content: flex-end;
  align-items: center;
}

.sound-toggle {
  position: relative;
  width: 42px;
  min-height: 36px;
  padding: 0;
  overflow: hidden;
  font-size: 20px;
  line-height: 1;
  color: var(--accent-strong);
  border-color: #efcccc;
  background: rgba(255, 255, 255, 0.68);
}

.sound-toggle::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 4px;
  width: 0;
  background: #16a34a;
  transition: width 120ms ease;
}

.sound-toggle span {
  position: relative;
  z-index: 1;
}

.sound-toggle[data-volume-level="1"]::after {
  width: 20%;
}

.sound-toggle[data-volume-level="2"]::after {
  width: 40%;
}

.sound-toggle[data-volume-level="3"]::after {
  width: 60%;
}

.sound-toggle[data-volume-level="4"]::after {
  width: 80%;
}

.sound-toggle[data-volume-level="5"]::after {
  width: 100%;
}

.sound-toggle.muted {
  color: var(--muted);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.36);
}

.sound-toggle.muted::after {
  display: none;
}