/* ===== Sheet Music Listing Page ===== */
:root {
  --sm-brand: #639fab;
  --sm-brand-dark: #4e8a96;
  --sm-ink: #161616;
  --sm-ink-light: #555;
  --sm-border: #e5e5e5;
  --sm-bg: #ffffff;
  --sm-bg-alt: #f5f5f5;
  --sm-radius: 10px;
}

/* Override global main padding */
#main-content {
  padding-top: 0 !important;
}

/* Hero */
.sm-hero {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
  color: #fff;
  padding: 64px 0 48px;
  text-align: center;
}
.sm-hero-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}
.sm-hero h1 {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0 0 12px;
}
.sm-hero .sm-hero-sub {
  font-size: 17px;
  color: rgba(255,255,255,0.65);
  margin: 0 0 28px;
  line-height: 1.5;
}
.sm-hero .sm-stat {
  display: inline-block;
  background: rgba(99,159,171,0.2);
  color: var(--sm-brand);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid rgba(99,159,171,0.3);
}

/* Toolbar */
.sm-toolbar {
  position: sticky;
  top: var(--nav-height, 64px);
  z-index: 90;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sm-border);
  padding: 16px 0;
}
.sm-toolbar-inner {
  max-width: var(--max-width, 1316px);
  margin: 0 auto;
  padding: 0 var(--content-padding, 24px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.sm-toolbar-row {
  display: flex;
  gap: 12px;
  align-items: center;
  width: 100%;
}

/* Sort dropdown */
.sm-sort {
  flex-shrink: 0;
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--sm-border);
  border-radius: 8px;
  font-size: 13px;
  font-family: inherit;
  color: var(--sm-ink);
  background: var(--sm-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23999' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E") no-repeat right 10px center;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
  transition: border-color 0.2s;
}
.sm-sort:focus {
  outline: none;
  border-color: var(--sm-brand);
  box-shadow: 0 0 0 3px rgba(99,159,171,0.12);
}
.sm-sort:hover {
  border-color: var(--sm-brand);
}

/* Search */
.sm-search {
  position: relative;
  flex: 1;
  max-width: 400px;
}
.sm-search svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: #999;
  pointer-events: none;
}
.sm-search input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  border: 1px solid var(--sm-border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  background: var(--sm-bg);
  color: var(--sm-ink);
  transition: border-color 0.2s;
  box-sizing: border-box;
}
.sm-search input:focus {
  outline: none;
  border-color: var(--sm-brand);
  box-shadow: 0 0 0 3px rgba(99,159,171,0.12);
}

/* Genre filter */
.sm-filters {
  flex: 1;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.sm-filters::-webkit-scrollbar { display: none; }

.sm-filter-btn {
  flex-shrink: 0;
  padding: 7px 16px;
  border: 1px solid var(--sm-border);
  border-radius: 20px;
  background: var(--sm-bg);
  color: var(--sm-ink-light);
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.sm-filter-btn:hover {
  border-color: var(--sm-brand);
  color: var(--sm-brand);
}
.sm-filter-btn.active {
  background: var(--sm-brand);
  border-color: var(--sm-brand);
  color: #fff;
}
.sm-filter-count {
  font-size: 11px;
  opacity: 0.7;
  margin-left: 4px;
}

/* Results info */
.sm-results-bar {
  max-width: var(--max-width, 1316px);
  margin: 0 auto;
  padding: 24px var(--content-padding, 24px) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sm-results-count {
  font-size: 14px;
  color: var(--sm-ink-light);
}
.sm-results-count strong {
  color: var(--sm-ink);
}

/* Grid */
.sm-grid-wrap {
  max-width: var(--max-width, 1316px);
  margin: 0 auto;
  padding: 12px var(--content-padding, 24px) 40px;
}
.sm-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* Card */
.sm-card {
  background: var(--sm-bg);
  border: 1px solid var(--sm-border);
  border-radius: var(--sm-radius);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}
.sm-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  border-color: var(--sm-brand);
}

.sm-card-img {
  position: relative;
  aspect-ratio: 3 / 4;
  background: var(--sm-bg-alt);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sm-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.sm-card-img .sm-placeholder {
  width: 48px;
  height: 48px;
  color: #ccc;
}
.sm-card-genre {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(0,0,0,0.65);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
  backdrop-filter: blur(4px);
}
.sm-card-audio {
  position: absolute;
  bottom: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  background: var(--sm-brand);
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}
.sm-card:hover .sm-card-audio { opacity: 1; }
.sm-card-audio.playing {
  opacity: 1;
  background: #111;
  box-shadow: 0 0 0 2px rgba(255,255,255,0.9), 0 8px 22px rgba(0,0,0,0.28);
}
.sm-card-audio svg { width: 14px; height: 14px; }

.sm-card-body {
  padding: 14px 16px 16px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.sm-card-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--sm-ink);
  margin: 0 0 4px;
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.sm-card-artist {
  font-size: 13px;
  color: var(--sm-ink-light);
  margin: 0 0 8px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sm-card-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sm-card-price {
  font-size: 15px;
  font-weight: 800;
  color: var(--sm-brand-dark);
}
.sm-card-pages {
  font-size: 12px;
  color: #999;
}

/* Pagination */
.sm-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  padding: 32px 0 48px;
  flex-wrap: wrap;
}
.sm-page-btn {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sm-border);
  border-radius: 8px;
  background: var(--sm-bg);
  color: var(--sm-ink);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  padding: 0 12px;
}
.sm-page-btn:hover {
  border-color: var(--sm-brand);
  color: var(--sm-brand);
}
.sm-page-btn.active {
  background: var(--sm-brand);
  border-color: var(--sm-brand);
  color: #fff;
  font-weight: 700;
}
.sm-page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.sm-page-nav {
  width: 44px;
  min-width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 999px;
  color: var(--sm-ink);
  background: linear-gradient(180deg, #ffffff 0%, #f7f7f7 100%);
  border-color: rgba(22, 22, 22, 0.1);
  box-shadow: 0 10px 28px rgba(22, 22, 22, 0.08), inset 0 1px 0 rgba(255,255,255,0.9);
}
.sm-page-nav:hover {
  color: #fff;
  background: var(--sm-brand);
  border-color: var(--sm-brand);
  box-shadow: 0 14px 34px rgba(99, 159, 171, 0.28);
  transform: translateY(-1px);
}
.sm-page-nav:active {
  transform: translateY(0);
}
.sm-page-nav:disabled,
.sm-page-nav:disabled:hover {
  opacity: 1;
  color: #b8b8b8;
  background: #f1f1f1;
  border-color: var(--sm-border);
  box-shadow: none;
  transform: none;
}
.sm-page-icon {
  width: 19px;
  height: 19px;
  stroke-width: 2.15;
}
.sm-page-dots {
  padding: 0 4px;
  color: #999;
  font-size: 14px;
}

/* Empty state */
.sm-empty {
  text-align: center;
  padding: 80px 24px;
  color: var(--sm-ink-light);
}
.sm-empty svg {
  width: 64px;
  height: 64px;
  color: #ddd;
  margin-bottom: 16px;
}
.sm-empty h3 {
  font-size: 20px;
  color: var(--sm-ink);
  margin: 0 0 8px;
}
.sm-empty p {
  font-size: 15px;
  margin: 0;
}

/* Loading */
.sm-loading {
  text-align: center;
  padding: 80px 24px;
  color: var(--sm-ink-light);
  font-size: 15px;
}
.sm-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--sm-border);
  border-top-color: var(--sm-brand);
  border-radius: 50%;
  animation: sm-spin 0.8s linear infinite;
  margin: 0 auto 16px;
}
@keyframes sm-spin {
  to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 1024px) {
  .sm-grid { grid-template-columns: repeat(3, 1fr); }
  .sm-search { flex: 0 0 260px; }
}
@media (max-width: 767px) {
  .sm-hero h1 { font-size: 30px; }
  .sm-hero .sm-hero-sub { font-size: 15px; }
  .sm-toolbar-inner { flex-direction: column; align-items: stretch; }
  .sm-search { flex: 1; }
  .sm-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .sm-card-body { padding: 10px 12px 14px; }
  .sm-card-title { font-size: 13px; }
}
@media (max-width: 480px) {
  .sm-grid { grid-template-columns: 1fr; }
  .sm-hero { padding: 48px 0 32px; }
  .sm-hero h1 { font-size: 26px; }
}