/* アルバムは既存エディタの上部だけを拡張する。単曲の下部レイアウトは変更しない。 */
.mastering-mode-switch { display: flex; gap: 2px; padding: 3px; border: 1px solid var(--border-primary); border-radius: var(--radius-md); }
.mastering-mode-switch button { border: 0; border-radius: var(--radius-sm); padding: 7px 12px; background: transparent; color: var(--text-secondary); font: inherit; font-size: var(--text-xs); cursor: pointer; white-space: nowrap; }
.mastering-mode-switch button[aria-pressed="true"] { background: var(--bg-tertiary); color: var(--text-primary); }
#album-controls[hidden] { display: none; }
#album-controls { background: var(--bg-secondary); border-bottom: 1px solid var(--border-primary); padding: var(--space-sm) var(--space-xl); display: grid; gap: var(--space-sm); }
#album-controls button, #album-controls select, #album-controls input:not([type="checkbox"]):not([type="file"]) { border: 1px solid var(--border-primary); border-radius: var(--radius-sm); background: var(--bg-tertiary); color: var(--text-primary); padding: 7px 10px; font: inherit; font-size: var(--text-xs); min-height: 34px; }
#album-controls button { cursor: pointer; }
#album-controls button:disabled { opacity: .45; cursor: default; }
#album-controls button:focus-visible, #album-controls summary:focus-visible, .mastering-mode-switch button:focus-visible { outline: 2px solid var(--color-standard-base); outline-offset: 2px; }
.album-topline, .album-actions { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-xs); }
.album-topline { justify-content: flex-start; gap: var(--space-xs); }
.album-topline > .album-actions { flex-wrap: nowrap; }
.album-topline button { white-space: nowrap; }
.album-toolbar-divider { width: 1px; height: 28px; flex: 0 0 1px; margin: 0 var(--space-xs); background: var(--border-primary); }
#album-title { width: 220px; max-width: 100%; }
.album-tabline { min-width: 0; }
#album-track-tabs { display: flex; gap: var(--space-xs); overflow-x: auto; padding: 3px 2px 8px; scrollbar-width: thin; }
#album-track-tabs button { flex: 0 0 auto; max-width: 280px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#album-track-tabs button[aria-selected="true"] { color: var(--color-standard-light); background: color-mix(in srgb, var(--color-standard-base), transparent 85%); border-color: var(--color-standard-base); }
#album-controls details { position: relative; }
#album-controls summary { cursor: pointer; color: var(--text-secondary); font-size: var(--text-xs); padding: 7px 0; }
#album-status, #album-measurement { color: var(--text-secondary); font-size: var(--text-xs); overflow-wrap: anywhere; }
#album-status:empty, #album-measurement:empty { display: none; }
#album-controls #album-render { color: var(--color-standard-light); border-color: var(--color-standard-base); }
.album-mode .mastering-tools-area { display: none !important; }
.album-selecting #pro-player-section { pointer-events: none; opacity: .5; }
.album-mode .full-height-layout, .album-mode .pro-workspace { height: auto; }
.album-mode .pro-main-area { overflow-y: visible; }
.album-mode .main-content { overflow-y: auto; }
@media(max-width: 780px) {
    .header-right { flex-wrap: wrap; }
    #album-controls { padding: var(--space-sm); }
    #album-controls button, #album-controls select, .mastering-mode-switch button { min-height: 44px; }
    #album-controls input:not([type="checkbox"]):not([type="file"]) { font-size: 16px; }
    #album-title { width: 100%; }
    #album-track-tabs button { max-width: 240px; }
}

.album-feedback { display: flex; flex-wrap: wrap; gap: 6px 20px; }
@media(max-width: 780px) {
    .app-layout, .app-layout.with-sidebar { grid-template-columns: minmax(0, 1fr); }
    .app-header { min-width: 0; padding: var(--space-sm); }
    .header-content { flex-wrap: wrap; gap: var(--space-sm); min-width: 0; }
    .header-right { gap: var(--space-xs); }
    .logo-section { flex-wrap: wrap; }
    .main-content { min-width: 0; }
    .album-topline > .album-actions { min-width: 0; max-width: 100%; }
}
/* 曲順の変更は音声や選択中の曲を変えない。挿入位置を左右の線で示す。 */
#album-reorder-hint { color: var(--text-secondary); font-size: var(--text-xs); }
#album-reorder-hint[hidden] { display: none; }
#album-track-tabs button[draggable="true"] { cursor: grab; }
#album-track-tabs button.is-dragging { opacity: .45; cursor: grabbing; }
#album-track-tabs button.drop-before { box-shadow: -3px 0 0 var(--color-standard-base); }
#album-track-tabs button.drop-after { box-shadow: 3px 0 0 var(--color-standard-base); }
.album-tab-tools { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-xs); }
#album-track-tabs .album-track-chip { display: inline-flex; align-items: stretch; flex: 0 0 auto; border: 1px solid var(--border-primary); border-radius: var(--radius-sm); }
#album-track-tabs .album-track-chip > button { border: 0; }
#album-track-tabs .album-track-chip:has([aria-selected="true"]) { border-color: var(--color-standard-base); }
#album-track-tabs .album-track-remove { padding: 4px 9px; min-width: 32px; font-size: 20px; color: var(--text-secondary); cursor: pointer; }
#album-track-tabs .album-track-remove:hover { color: var(--text-primary); background: var(--bg-secondary); }
#album-track-tabs .album-track-chip.is-dragging { opacity: .45; }
#album-track-tabs .album-track-chip.drop-before { box-shadow: -3px 0 0 var(--color-standard-base); }
#album-track-tabs .album-track-chip.drop-after { box-shadow: 3px 0 0 var(--color-standard-base); }

@media(max-width: 780px) {
    .album-topline > .album-actions { flex-wrap: wrap; }
    .album-toolbar-divider { display: none; }
}

#album-controls .album-summary[hidden],
#album-controls .album-toolbar-divider[hidden] { display: none; }

/* 入力済みの全曲を先に示し、現在の処理対象を選択表示より優先する。 */
#album-track-tabs .album-track-chip.is-queued { opacity: .45; }
#album-track-tabs.has-processing .album-track-chip:not(.is-processing) { border-color: var(--border-primary); }
#album-track-tabs.has-processing .album-track-chip:not(.is-processing) > button[aria-selected="true"] { background: transparent; color: var(--text-secondary); }
#album-track-tabs .album-track-chip.is-processing { border-color: var(--color-standard-base); }
#album-track-tabs .album-track-chip.is-processing > button:first-child { background: rgba(16,185,129,.16); color: var(--color-standard-base); opacity: 1; }

.album-feedback:not(:has(#album-status:not(:empty), #album-measurement:not(:empty))) { display: none; }

/* アルバム操作を独立した左カラムにまとめ、既存エディタの縦位置を保つ。 */
.album-mode .app-layout, .album-mode .app-layout.with-sidebar {
    grid-template-columns: var(--album-panel-width, 320px) minmax(0, 1fr);
    grid-template-areas: "header header" "album main";
    align-items: start;
}
.album-mode .app-layout .main-content { grid-area: main; grid-column: 2; min-width: 0; }
#album-controls {
    grid-area: album; position: sticky; top: var(--album-header-height, 72px);
    height: calc(100dvh - var(--album-header-height, 72px)); box-sizing: border-box;
    min-width: 0; padding: 16px 14px; border-bottom: 0; border-right: 1px solid var(--border-primary);
    grid-template-rows: auto minmax(80px, 1fr) auto auto auto; gap: 16px;
}
#album-controls .album-topline { display: flex; flex-direction: column; align-items: stretch; min-width: 0; }
#album-controls #album-title { width: 100%; box-sizing: border-box; min-width: 0; }
#album-controls .album-topline .album-actions { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
#album-controls .album-topline button { min-width: 0; padding-inline: 6px; white-space: normal; }
#album-controls .album-tabline { display: flex; flex-direction: column; min-height: 0; gap: 8px; }
#album-track-tabs { flex-direction: column; overflow-x: hidden; overflow-y: auto; min-height: 0; padding: 3px 2px; flex: 1; }
#album-track-tabs .album-track-chip { width: 100%; box-sizing: border-box; min-width: 0; }
#album-track-tabs .album-track-chip > button:first-child {
    display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; grid-template-rows: auto auto;
    column-gap: 6px; row-gap: 3px; text-align: left; flex: 1; min-width: 0; max-width: none; padding: 10px 8px;
}
.album-track-number { grid-column: 1; grid-row: 1 / 3; color: var(--text-secondary); align-self: center; font-variant-numeric: tabular-nums; }
.album-track-name { grid-column: 2; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.album-track-duration { grid-column: 3; font-variant-numeric: tabular-nums; color: var(--text-secondary); }
.album-track-state { grid-column: 2 / -1; font-size: 10px; color: var(--text-secondary); }
#album-controls.is-compact .album-track-duration { display: none; }
#album-controls.is-compact .album-track-name { grid-column: 2 / -1; }
#album-track-tabs .album-track-remove { flex: 0 0 28px; min-width: 28px; padding: 4px; max-width: 28px; }
#album-controls .album-summary { display: flex; flex-direction: column; align-items: stretch; gap: 8px; }
#album-controls .album-toolbar-divider { display: block; width: 100%; height: 1px; margin: 0 0 4px; flex-basis: 1px; }
#album-reorder-hint { font-size: 10px; }
#album-resizer { position: absolute; top: 0; bottom: 0; right: 0; width: 8px; cursor: col-resize; touch-action: none; z-index: 20; }
#album-resizer:hover, #album-resizer:focus-visible { background: color-mix(in srgb, var(--color-standard-base), transparent 55%); outline: none; }
.album-resizing, .album-resizing * { cursor: col-resize !important; user-select: none !important; }
#album-track-tabs .drop-before { box-shadow: 0 -3px 0 var(--color-standard-base) !important; }
#album-track-tabs .drop-after { box-shadow: 0 3px 0 var(--color-standard-base) !important; }
.album-mode #nav-upload-new-btn { display: none; }
@media (max-height: 600px) {
    #album-controls { gap: 8px; overflow-y: auto; grid-template-rows: auto minmax(100px, 1fr) auto auto; }
}

.album-storage { font-size: var(--text-xs); color: var(--text-secondary); }
.album-storage p { margin: 4px 0 8px; overflow-wrap: anywhere; }
.album-mode .main-content { container-type: inline-size; container-name: album-editor; }
.album-mode .pro-main-area { min-width: 0; }
@container album-editor (max-width: 1200px) {
    .player-header { flex-wrap: wrap; gap: 12px; }
    .header-preset-info { flex: 1 1 100%; }
    .header-sliders { flex: 1 1 100%; flex-wrap: wrap; min-width: 0; }
    .header-sliders .header-slider-group input[type="range"] { width: 100%; min-width: 80px; }
}
@container album-editor (max-width: 1100px) {
    .visual-content-wrapper { flex-direction: column; }
    .visual-left-group, .visual-right-group { flex: 1 1 auto; min-width: 0; width: 100%; }
    .transport-bar, .transport-left-group { flex-wrap: wrap; gap: 8px; }
    .pro-main-area { padding: 16px; }
    .preset-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .file-info-bar { padding: 12px 16px; }
    .filename-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
}

.album-mode .visual-left-group, .album-mode .visual-right-group { min-width: 0; }