:root {
  color-scheme: dark;
  --bg: #101216;
  --surface: #171a1f;
  --surface-raised: #20242b;
  --line: #353b43;
  --ink: #f2f4f3;
  --muted: #a2abb2;
  --cyan: #53c6d7;
  --gold: #e8c07a;
  --red: #f09d9a;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); }
body { font-size: 15px; line-height: 1.4; }
button, input { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .4; }
a { color: inherit; text-decoration: none; }
button:focus-visible, input:focus-visible, a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.app-header {
  min-height: 64px;
  padding: 12px max(18px, calc((100vw - 1440px) / 2));
  display: flex;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; flex: none; }
.brand img { display: block; width: 153px; height: 36px; object-fit: contain; }
.header-divider { height: 22px; border-left: 1px solid var(--line); }
.product-name { font-size: 15px; font-weight: 700; white-space: nowrap; }
.site-nav { display: flex; flex-wrap: wrap; gap: 4px 6px; margin-left: auto; }
.site-nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: 4px;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a[aria-current="page"] { color: var(--ink); border-color: var(--line); background: var(--surface); }

.app-main { max-width: 1440px; margin: 0 auto; }
.page-toolbar {
  min-height: 82px;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.page-title { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 21px; font-weight: 750; }
h2 { font-size: 24px; font-weight: 750; }
h3 { font-size: 16px; font-weight: 700; }
.count { color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.toolbar-actions, .song-actions, .dialog-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.button {
  min-height: 38px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  color: var(--ink);
  background: var(--surface);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
}
.button:hover:not(:disabled) { border-color: var(--cyan); background: var(--surface-raised); }
.button.primary { background: var(--cyan); color: #09181b; border-color: var(--cyan); }
.button.primary:hover:not(:disabled) { background: #7dd8e3; }
.button.quiet { background: transparent; }
.button.danger { color: var(--red); background: transparent; }
.button.danger:hover:not(:disabled) { border-color: var(--red); }
.icon-button { width: 38px; padding: 2px 0 6px; font-size: 27px; line-height: 1; }

.compatibility-note {
  padding: 10px 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.compatibility-note strong { color: var(--gold); }

.workspace {
  display: grid;
  grid-template-columns: minmax(250px, 315px) minmax(0, 1fr);
  height: clamp(520px, calc(100vh - 235px), 900px);
  height: clamp(520px, calc(100dvh - 235px), 900px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.bank-pane { display: flex; flex-direction: column; min-width: 0; min-height: 0; background: var(--surface); border-right: 1px solid var(--line); }
.pane-header { padding: 16px; border-bottom: 1px solid var(--line); }
.field-label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: 0; }
input[type="text"], input[type="search"], input[type="number"] {
  width: 100%;
  min-width: 0;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  outline: none;
  color: var(--ink);
  background: #0d0f12;
}
input::placeholder { color: #777f87; }
input:focus { border-color: var(--cyan); }
.filter-group { display: flex; margin-top: 12px; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; }
.filter { flex: 1; min-height: 32px; border: 0; color: var(--muted); background: transparent; font-weight: 650; }
.filter + .filter { border-left: 1px solid var(--line); }
.filter.active { color: var(--ink); background: var(--surface-raised); }
.bank-list { overflow-y: auto; flex: 1; min-height: 0; scrollbar-color: #4b5660 var(--surface); -webkit-overflow-scrolling: touch; }
.bank-list::-webkit-scrollbar { width: 9px; }
.bank-list::-webkit-scrollbar-track { background: var(--surface); }
.bank-list::-webkit-scrollbar-thumb { background: #4b5660; border: 2px solid var(--surface); border-radius: 5px; }
.bank-item {
  width: 100%;
  min-height: 47px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 16px;
  border: 0;
  border-bottom: 1px solid #292e34;
  border-left: 3px solid transparent;
  text-align: left;
  background: transparent;
  color: var(--ink);
}
.bank-item:hover { background: var(--surface-raised); }
.bank-item[aria-selected="true"] { border-left-color: var(--cyan); background: #223038; }
.bank-number { flex: none; width: 28px; color: var(--gold); font-size: 12px; font-weight: 750; font-variant-numeric: tabular-nums; }
.bank-title { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; font-size: 14px; }
.bank-title.empty { color: #7f888f; }
.bank-empty-search { padding: 20px 16px; color: var(--muted); }

.edit-pane { padding: 26px clamp(18px, 3vw, 42px); min-width: 0; min-height: 0; overflow-y: auto; }
.edit-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.edit-heading .field-label { margin-bottom: 3px; }
#selected-bank { color: var(--gold); font-variant-numeric: tabular-nums; }
.song-field { max-width: 850px; margin-top: 24px; }
#song-name { min-height: 48px; font-size: 18px; font-weight: 620; }
.slot-heading { margin-top: 32px; margin-bottom: 9px; display: flex; align-items: baseline; gap: 10px; }
.slot-heading span { color: var(--muted); font-size: 12px; }
.slot-table { max-width: 1000px; }
.slot-column-head, .slot-row {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) minmax(0, 1fr) 150px;
  align-items: center;
  gap: 10px;
}
.slot-column-head { padding: 8px 0; color: var(--muted); font-size: 11px; font-weight: 750; }
.slot-row { padding: 10px 0; border-top: 1px solid var(--line); }
.slot-row label { min-width: 0; }
.slot-number { font-size: 18px; font-weight: 750; color: var(--gold); text-align: center; font-variant-numeric: tabular-nums; }
.slot-row input { min-height: 44px; }
.slot-row input[aria-invalid="true"] { border-color: var(--red); }
.amp-choose {
  width: 100%;
  min-height: 58px;
  padding: 3px 7px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #0d0f12;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}
.amp-choose:hover { border-color: var(--cyan); color: var(--ink); }
.amp-choose img { display: block; width: 100%; height: 32px; object-fit: contain; }
.amp-choose span { overflow: hidden; max-width: 100%; white-space: nowrap; text-overflow: ellipsis; }
.editor-footer { padding: 12px 24px; display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
#save-status { color: var(--cyan); }
#save-status.warning { color: var(--gold); }
.editor-footer a { color: var(--cyan); }
.editor-footer a:hover { text-decoration: underline; }

dialog { width: min(430px, calc(100vw - 28px)); padding: 0; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-raised); color: var(--ink); }
dialog::backdrop { background: rgba(0, 0, 0, .72); }
.dialog-content { padding: 24px; }
.dialog-content h2 { font-size: 19px; margin-bottom: 10px; }
.dialog-content p { color: var(--muted); margin-bottom: 20px; }
.dialog-actions { justify-content: flex-end; margin-top: 24px; }
.dialog-error { color: var(--red); margin-top: 10px; font-size: 13px; }

#amp-dialog { width: min(920px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); }
.amp-dialog-content { padding: 16px; }
.amp-dialog-heading, .amp-dialog-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.amp-dialog-heading h2 { font-size: 22px; }
.amp-dialog-heading .field-label { margin-bottom: 2px; }
.amp-source-note { margin-top: 12px; padding: 8px 10px; border-left: 2px solid var(--gold); color: var(--gold); font-size: 12px; }
.amp-source-note[hidden] { display: none; }
.amp-carousel { margin: 14px -4px 0; display: grid; grid-template-columns: 48px minmax(0, 1fr) 48px; align-items: stretch; }
.carousel-arrow { border: 0; color: var(--ink); background: transparent; font-size: 46px; line-height: 1; }
.carousel-arrow:hover:not(:disabled) { color: var(--cyan); }
.amp-strip {
  --amp-slide-width: min(76%, 520px);
  min-width: 0;
  height: clamp(150px, 35vh, 300px);
  padding-inline: calc((100% - var(--amp-slide-width)) / 2);
  display: flex;
  align-items: stretch;
  gap: 16px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: #59636b transparent;
  -webkit-overflow-scrolling: touch;
}
.amp-slide {
  flex: 0 0 var(--amp-slide-width);
  min-width: 0;
  margin: 4px 0 8px;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #0d0f12;
  opacity: .6;
  scroll-snap-align: center;
  cursor: pointer;
}
.amp-slide[aria-selected="true"] { border-color: var(--cyan); opacity: 1; }
.amp-slide img { display: block; max-width: 100%; max-height: 100%; object-fit: contain; }
.amp-none { color: var(--muted); font-size: 20px; font-weight: 750; }
.amp-dialog-footer { min-height: 58px; padding-top: 10px; }
#amp-selected-name { font-size: 19px; font-weight: 750; }
.amp-dialog-footer .dialog-actions { margin: 0; }

@media (max-width: 900px) {
  .app-header { flex-wrap: wrap; }
  .site-nav { width: 100%; margin-left: 0; }
}
@media (max-width: 850px) {
  .page-toolbar { align-items: flex-start; flex-direction: column; }
  .workspace { grid-template-columns: minmax(0, 1fr); height: auto; }
  .bank-pane { border-right: 0; border-bottom: 1px solid var(--line); }
  .pane-header { display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 7px 12px; }
  .pane-header .field-label { grid-column: 1 / -1; margin: 0; }
  .filter-group { margin: 0; min-width: 136px; }
  .bank-list { flex: none; height: 210px; }
  .edit-pane { padding: 22px 18px 36px; }
}
@media (max-width: 560px) {
  .app-header { gap: 10px; padding: 10px 14px; flex-wrap: wrap; }
  .brand img { width: 119px; height: 28px; }
  .header-divider { height: 18px; }
  .product-name { font-size: 13px; }
  .site-nav { margin-left: 0; }
  .site-nav a { font-size: 12px; }
  .page-toolbar { padding: 14px; }
  .compatibility-note { padding: 10px 14px; }
  .toolbar-actions { width: 100%; }
  .toolbar-actions .button:not(.icon-button) { flex: 1 1 auto; }
  .slot-column-head { display: none; }
  .slot-row { grid-template-columns: 28px minmax(0, 1fr) minmax(0, 1fr); gap: 6px; }
  .slot-row input { padding: 6px; font-size: 13px; }
  .slot-number { font-size: 15px; }
  .amp-choose { grid-column: 2 / -1; min-height: 44px; flex-direction: row; justify-content: flex-start; gap: 8px; padding-inline: 8px; }
  .amp-choose img { width: min(44%, 140px); height: 34px; }
  .amp-dialog-content { padding: 12px; }
  .amp-carousel { grid-template-columns: minmax(0, 1fr); }
  .carousel-arrow { display: none; }
  .amp-strip { --amp-slide-width: 78%; gap: 10px; }
  .amp-dialog-footer { flex-wrap: wrap; }
  .song-actions { width: 100%; }
  .song-actions .button { flex: 1; }
  .editor-footer { padding: 12px 14px; }
}