/* App-level helpers; keep small so theme.css does most of the work */
.hidden{display:none}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}


/* ===== Accessible tab pills (song detail) ===== */
.tag-chip{
  -webkit-appearance:none; appearance:none;
  cursor:pointer;
  border:1px solid #334155;               /* slate-700 */
  background:
    linear-gradient(180deg, rgba(255,255,255,.03), rgba(0,0,0,.06)),
    #0f172a;                              /* slate-900 */
  color:#e5edf9;                          /* high-contrast on dark */
  padding:.55rem .9rem;
  margin:0;
  border-radius:9999px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  box-shadow:
    0 1px 0 rgba(255,255,255,.04) inset,
    0 1px 2px rgba(0,0,0,.35);
  transition:
    background-color .15s ease,
    border-color .15s ease,
    box-shadow .15s ease,
    transform .04s ease;
}
.tag-chip:hover{
  border-color:#4b5563;                   /* slate-600 */
  background:
    linear-gradient(180deg, rgba(255,255,255,.05), rgba(0,0,0,.08)),
    #111827;                              /* slightly brighter */
}
.tag-chip:active{ transform:translateY(1px); }

.tag-chip:focus-visible{
  outline:none;
  box-shadow:
    0 0 0 3px rgba(56,189,248,.35),       /* sky-400 focus glow */
    0 0 0 1.5px #38bdf8 inset,
    0 1px 2px rgba(0,0,0,.35);
  border-color:#38bdf8;
}

/* Active pill (“selected” state) */
.filter-chip-active{
  color:#0b1220;                          /* dark text on bright bg */
  border-color:#22c55e;                   /* green-500 */
  background:
    linear-gradient(180deg, rgba(255,255,255,.10), rgba(0,0,0,.04)),
    #22c55e! important;                              /* green-500 */
  text-shadow:0 1px 0 rgba(255,255,255,.25);
  box-shadow:
    0 1px 0 rgba(255,255,255,.35) inset,
    0 1px 2px rgba(0,0,0,.35);
}
.filter-chip-active:hover{
  border-color:#16a34a;                   /* green-600 */
  background:
    linear-gradient(180deg, rgba(255,255,255,.12), rgba(0,0,0,.05)),
    #16a34a;
}

/* Compact layout support on narrow screens */
@media (max-width: 640px){
  .tag-chip{ padding:.5rem .75rem; font-weight:600; }
}

/* High-contrast mode support */
@media (prefers-contrast: more){
  .tag-chip{ border-color:#94a3b8; }      /* slate-400 */
  .filter-chip-active{ border-color:#16a34a; }
}

/* Language toggle button - Fixed position top-right */
.language-toggle-btn {
  position: fixed;
  top: 1.5rem;
  right: calc(1.5rem + 48px + 20px);
  height: 48px;
  padding: 0 0.75rem;
  border-radius: 8px;
  background: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(148, 163, 184, 0.2);
  color: #e2e8f0;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 1000;
}

.language-toggle-btn:hover {
  background: rgba(30, 41, 59, 0.8);
  transform: scale(1.05);
}

.language-toggle-btn:active {
  transform: scale(1.02);
}

:root[data-theme="light"] .language-toggle-btn {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(0, 0, 0, 0.1);
  color: #1a1a1a;
}

:root[data-theme="light"] .language-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.95);
  transform: scale(1.05);
}

.footer-lang-toggle {
  padding: 4px 8px;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 0.875rem;
  text-decoration: underline;
}

.footer-lang-toggle:hover {
  opacity: 0.7;
}