/* ── Animations ── */
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
@keyframes badgeFadeIn { from { opacity: 0; transform: scale(0.8); } to { opacity: 1; transform: scale(1); } }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile full player */
@media (max-width: 640px) {
  .fp-art { max-width: 280px; }
  .fp-title { font-size: 18px; }
  .fp-artist { font-size: 13px; }
  .fp-actions .fp-vol-wrap { display: none; }
}
/* Desktop full player — split layout */
@media (min-width: 641px) {
  .full-player { flex-direction: row; }
  .fp-player-side { flex: 1; max-width: 60%; }
  .fp-queue-side { display: flex; flex: 1; min-width: 320px; max-width: 40%; }
  .fp-art { max-width: 280px; }
}

/* ── Responsive ── */
@media (max-width: 640px) {
  :root { --nav-height: 52px; }

  /* Hide top nav on mobile — bottom nav handles navigation */
  nav { display: none; }
  :root { --nav-height: 0px; }

  /* Bottom nav bar */
  .bottom-nav {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10,10,15,0.95);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid rgba(42,42,61,.6);
    display: flex; align-items: center; justify-content: space-around;
    height: var(--bottom-nav-height);
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  .bottom-nav .bnav-btn {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    background: none; border: none; color: var(--text-dim);
    font-size: 10px; font-weight: 600; cursor: pointer; padding: 8px 12px;
    border-radius: 12px; transition: all var(--transition);
    font-family: inherit; letter-spacing: 0.3px; min-width: 56px;
    position: relative;
  }
  .bottom-nav .bnav-btn svg { width: 22px; height: 22px; }
  .bottom-nav .bnav-btn.active { color: var(--accent); }
  .bottom-nav .bnav-btn .bnav-badge {
    position: absolute; top: 2px; right: 6px;
    background: var(--accent); color: #000; font-size: 9px; font-weight: 700;
    padding: 1px 5px; border-radius: 8px; min-width: 14px; text-align: center;
  }
  .bottom-nav .bnav-btn .bnav-badge:empty { display: none; }
  .bottom-nav .bnav-now-playing { color: var(--accent); }
  .bottom-nav .bnav-now-playing svg { animation: npPulse 2s ease-in-out infinite; }
  @keyframes npPulse { 0%, 100% { opacity: 1; } 50% { opacity: .5; } }

  main {
    padding: 16px 16px calc(var(--bottom-nav-height) + 16px);
  }
  body.player-active main { padding-bottom: calc(var(--bottom-nav-height) + 68px + 16px); }
  body.player-active .bottom-nav { bottom: calc(67px + env(safe-area-inset-bottom, 0)); }
  body.keyboard-open .bottom-nav { display: none !important; }
  body.keyboard-open .player-bar { display: none !important; }
  .player-bar { padding: 0 12px; padding-bottom: env(safe-area-inset-bottom, 0); gap: 10px; height: calc(68px + env(safe-area-inset-bottom, 0)); }
  .player-progress-wrap { display: none; }
  .player-volume { display: none !important; }
  .player-bar .player-img { width: 42px; height: 42px; }
  .card-play-btn { opacity: .85; transform: translateY(0); }
  .card-dl-btn { opacity: .85; transform: translateY(0); }
  .queue-panel { height: 80vh; border-radius: 0 0 16px 16px; }

  .grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
  }
  .skeleton-card { height: 220px; }

  .card-body { padding: 10px; }
  .card-title { font-size: 13px; }
  .card-sub { font-size: 12px; }

  /* Downloads panel: full screen on mobile */
  .downloads-panel {
    width: 100%; top: 0;
    border-radius: 0; border-left: none;
  }

  /* Modal: bottom sheet on mobile */
  .modal-overlay { align-items: flex-end; }
  .modal {
    width: 100%; max-width: 100%;
    border-radius: 20px 20px 0 0;
    padding: 28px 24px calc(28px + env(safe-area-inset-bottom, 0));
    transform: translateY(100%);
    max-height: 90vh; overflow-y: auto;
  }
  .modal-overlay.open .modal { transform: translateY(0); }

  .modal-img { width: 72px; height: 72px; }

  .page-title { font-size: 22px; }

  .search-input { padding: 14px 44px 14px 46px; font-size: 15px; }
  .btn-mic { width: 48px; height: 48px; }

  /* Playlist hero stacks on mobile */
  .playlist-hero {
    flex-direction: column; align-items: flex-start; padding: 18px;
  }
  .playlist-hero-actions {
    flex-direction: row; flex-wrap: wrap; align-items: center; width: 100%; gap: 8px;
  }
  .playlist-hero-actions .btn-download { padding: 10px 16px !important; font-size: 13px; }
  .playlist-hero-actions .btn-download:nth-child(-n+2) { flex: 1; }
  .playlist-hero-actions .btn-download:nth-child(n+3) { flex: 0 0 auto; }

  /* Recognize result responsive */
  .recognize-result .rr-header { flex-wrap: wrap; }
  .recognize-result .rr-actions { width: 100%; margin-top: 12px; margin-left: 0; }
}

/* Hide bottom nav on desktop */
@media (min-width: 641px) {
  .bottom-nav { display: none; }
}