/**
 * Brand Bridge B2 — A–Z Piano Notes list
 */

html:has(body.kp-bb-az) {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html:has(body.kp-bb-az) {
    scroll-behavior: auto;
  }
}

body.kp-bb-az .kp-az__lede {
  margin: 0.55rem 0 0;
  max-width: 36rem;
  font-family: var(--bb-font);
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--bb-muted);
}

body.kp-bb-az .kp-az-toolbar {
  margin-top: 0.85rem;
}

/*
 * Letter index: compact square tile grid on mobile (all letters visible).
 * Wider / single-row on large desktop.
 */
body.kp-bb-az .kp-az-toolbar.kp-category-toolbar {
  position: static;
  margin-left: 0;
  margin-right: 0;
  padding: 0.75rem 0.7rem 0.85rem;
  border: 1px solid var(--bb-border);
  border-radius: var(--bb-radius, 0.75rem);
  background: var(--bb-surface);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__track {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.4rem;
  overflow: visible;
  flex-wrap: unset;
  scroll-snap-type: none;
  padding: 0;
}

body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__chip,
body.kp-bb-az .kp-az-toolbar__chip {
  width: 100%;
  min-width: 0;
  aspect-ratio: 1 / 1;
  min-height: 0;
  height: auto;
  padding: 0;
  border-radius: 0.55rem;
  justify-content: center;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  scroll-snap-align: unset;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__chip:hover,
body.kp-bb-az .kp-az-toolbar__chip:hover:not(.is-disabled) {
  border-color: var(--bb-accent) !important;
  color: var(--bb-accent) !important;
  background: color-mix(in srgb, var(--bb-accent) 8%, var(--bb-surface)) !important;
}

body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__chip:active:not(.is-disabled) {
  transform: scale(0.96);
  background: var(--bb-accent) !important;
  border-color: var(--bb-accent) !important;
  color: #fff !important;
}

body.kp-bb-az .kp-az-toolbar__chip.is-disabled {
  opacity: 0.42;
  cursor: default;
  pointer-events: none;
  color: var(--bb-muted) !important;
  background: var(--bb-surface-2) !important;
  border-color: var(--bb-border) !important;
  box-shadow: none;
  font-weight: 600;
}

@media (min-width: 480px) {
  body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__track {
    grid-template-columns: repeat(9, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  body.kp-bb-az .kp-az-toolbar.kp-category-toolbar {
    position: sticky;
    top: 3.65rem;
    z-index: 25;
    padding: 0.55rem 0 0.65rem;
    border: 0;
    border-bottom: 1px solid var(--bb-border);
    border-radius: 0;
    background: color-mix(in srgb, var(--bb-bg, #f8fcff) 92%, transparent);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
  }

  body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__track {
    grid-template-columns: repeat(14, minmax(0, 1fr));
    gap: 0.35rem;
  }

  body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__chip,
  body.kp-bb-az .kp-az-toolbar__chip {
    aspect-ratio: auto;
    min-height: 2.15rem;
    height: auto;
    padding: 0.3rem 0.2rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
  }

  body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__chip:active:not(.is-disabled) {
    transform: none;
    background: var(--bb-surface) !important;
    color: var(--bb-accent) !important;
  }
}

@media (min-width: 1100px) {
  body.kp-bb-az .kp-az-toolbar .kp-category-toolbar__track {
    grid-template-columns: repeat(27, minmax(0, 1fr));
  }
}

html[data-theme="dark"] body.kp-bb-az .kp-az-toolbar.kp-category-toolbar {
  background: var(--bb-surface);
  border-color: var(--bb-border);
}

@media (min-width: 720px) {
  html[data-theme="dark"] body.kp-bb-az .kp-az-toolbar.kp-category-toolbar {
    background: color-mix(in srgb, var(--bb-bg, #0b1220) 90%, transparent);
    border-color: var(--bb-border);
  }
}


body.kp-bb-az .kp-az-section,
body.kp-bb-az #kp-az-letters,
body.kp-bb-az #top {
  scroll-margin-top: 4.75rem;
}

@media (min-width: 720px) {
  body.kp-bb-az .kp-az-section {
    /* Site nav + sticky letter bar */
    scroll-margin-top: 8.75rem;
  }

  body.kp-bb-az #kp-az-letters,
  body.kp-bb-az #top {
    scroll-margin-top: 4.75rem;
  }
}

body.kp-bb-az .kp-az-section__head {
  margin-bottom: 0.65rem;
}

body.kp-bb-az .kp-az-section__title {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.65rem;
  margin: 0 !important;
  font-family: var(--bb-font) !important;
  font-size: 1.15rem !important;
  font-weight: 800 !important;
  letter-spacing: -0.02em;
  color: var(--bb-text) !important;
}

body.kp-bb-az .kp-az-section__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 0.45rem;
  border-radius: 0.5rem;
  background: color-mix(in srgb, var(--bb-accent) 12%, var(--bb-surface));
  border: 1px solid color-mix(in srgb, var(--bb-accent) 28%, var(--bb-border));
  color: var(--bb-accent);
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1;
}

body.kp-bb-az .kp-az-section__label {
  flex: 1 1 auto;
  min-width: 0;
}

body.kp-bb-az .kp-az-section__count {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  min-height: 1.55rem;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--bb-border);
  background: var(--bb-surface);
  color: var(--bb-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

body.kp-bb-az .kp-az__back {
  margin: 0.75rem 0 0;
  font-family: var(--bb-font);
  font-size: 0.85rem;
  font-weight: 700;
}

body.kp-bb-az .kp-az__back a {
  color: var(--bb-accent) !important;
  text-decoration: none !important;
}

body.kp-bb-az .kp-az__back a:hover {
  color: var(--bb-accent-hover) !important;
}

html[data-theme="dark"] body.kp-bb-az h1.kp-movie__title,
html[data-theme="dark"] body.kp-bb-az h1.kp-category__title {
  color: #f8fafc !important;
}

html[data-theme="dark"] body.kp-bb-az .kp-az-section__badge {
  background: color-mix(in srgb, var(--bb-accent) 18%, var(--bb-surface));
  border-color: color-mix(in srgb, var(--bb-accent) 40%, var(--bb-border));
  color: var(--bb-accent);
}

html[data-theme="dark"] body.kp-bb-az .kp-az__back a:hover {
  color: var(--bb-accent-hover) !important;
}

/* Dual notation directory toggle pills */
body.kp-bb-az .kp-az-type-toggle {
  margin-top: 1rem;
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

body.kp-bb-az .kp-az-row .kp-movie-song__diff {
  margin-left: 0.35rem;
}