/* 公开曲库页：沿用官网视觉语言，深色面板 + 绿色强调。 */
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); }
.library-layout { min-height: calc(100vh - 260px); padding: 48px 0 20px; }
.library-intro { max-width: 760px; margin-bottom: 34px; }
.library-intro h1 { margin-bottom: 16px; }
.library-intro p:last-child { margin: 0; color: var(--muted); }
.library-toolbar { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
#search-form { display: flex; flex: 1; min-width: 300px; gap: 10px; }
#search-input { flex: 1; min-width: 0; min-height: 50px; padding: 0 18px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--panel); font: inherit; }
#search-input:focus { outline: 2px solid var(--green); outline-offset: 2px; }
.library-filters { display: flex; align-items: center; gap: 10px; color: var(--dim); font-size: 13px; }
.library-filters select { min-height: 42px; padding: 0 12px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--panel); font: inherit; }
.library-status { min-height: 26px; margin: 0 0 18px; color: var(--dim); font-size: 13px; }
.library-status[data-error="true"] { color: #f0a45e; }
.song-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.song-card { display: flex; flex-direction: column; gap: 12px; padding: 24px; border: 1px solid var(--line); background: var(--panel); }
.song-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.song-head h2 { margin: 0; font-size: 19px; letter-spacing: 0; line-height: 1.5; overflow-wrap: anywhere; }
.song-badges { flex-shrink: 0; display: flex; gap: 6px; }
.badge { padding: 2px 9px; border: 1px solid rgba(177,243,109,.45); border-radius: 20px; color: var(--green); font-size: 11px; }
.song-meta { margin: 0; color: var(--dim); font-size: 12px; overflow-wrap: anywhere; }
.song-description { flex: 1; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; overflow-wrap: anywhere; }
.song-download { align-self: flex-start; min-height: 42px; padding: 0 20px; font-size: 13px; }
.library-empty { margin: 0 0 30px; padding: 60px 20px; border: 1px dashed var(--line); color: var(--dim); text-align: center; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 18px; margin: 34px 0 10px; }
.pagination .button { min-height: 42px; padding: 0 18px; font-size: 13px; }
.pagination .button:disabled { opacity: .4; cursor: default; }
.pagination .button:disabled:hover { background: var(--panel); border-color: var(--line); transform: none; }
#page-info { color: var(--dim); font-size: 13px; }
.library-footer { margin-top: 60px; padding: 26px 0; border-top: 1px solid var(--line); color: var(--dim); font-size: 12px; }
.library-footer .container { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.library-footer p { margin: 0; max-width: 560px; line-height: 1.7; }
@media (max-width: 620px) {
  .library-layout { padding-top: 30px; }
  .library-toolbar { flex-direction: column; align-items: stretch; }
  #search-form { min-width: 0; }
  .song-grid { grid-template-columns: 1fr; }
  .library-footer .container { flex-direction: column; align-items: flex-start; }
}