.my9musics-page {
    --mmu-bg-a: #f9fbff;
    --mmu-bg-b: #eef6f4;
    --mmu-surface: rgba(255, 255, 255, 0.94);
    --mmu-border: rgba(15, 23, 42, 0.12);
    --mmu-text: #102033;
    --mmu-muted: #526274;
    --mmu-primary: #0f766e;
    --mmu-primary-soft: rgba(15, 118, 110, 0.14);
    --mmu-shadow: 0 12px 28px rgba(15, 23, 42, 0.1);
}

body.my9musics-page {
    font-family: "Noto Sans JP", sans-serif;
    color: var(--mmu-text);
    background:
        radial-gradient(circle at 12% 12%, rgba(14, 116, 144, 0.09), transparent 40%),
        radial-gradient(circle at 88% 14%, rgba(16, 185, 129, 0.08), transparent 42%),
        linear-gradient(180deg, var(--mmu-bg-a), var(--mmu-bg-b));
}

.mmu-page {
    max-width: 1220px;
}

.mmu-page .page-header__title-text {
    font-family: "Space Grotesk", "Noto Sans JP", sans-serif;
}

.mmu-card {
    background: var(--mmu-surface);
    border: 1px solid var(--mmu-border);
    box-shadow: var(--mmu-shadow);
}

.mmu-tools-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 1rem;
}

.mmu-section-title {
    font-size: clamp(1.12rem, 2vw, 1.45rem);
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.mmu-progress,
.mmu-board-help,
.mmu-modal-slot-target,
.mmu-inline-meta {
    color: var(--mmu-muted);
}

.mmu-progress {
    font-weight: 600;
}

.mmu-board-help,
.mmu-inline-meta,
.mmu-modal-slot-target {
    font-size: 0.88rem;
}

.mmu-sakamichi-filter {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
    gap: 0.5rem;
}

.mmu-sakamichi-button {
    border: 1px solid rgba(15, 23, 42, 0.14);
    border-radius: 0.72rem;
    min-height: 2.85rem;
    background: #ffffff;
    color: var(--mmu-text);
    font-weight: 700;
    font-size: 0.9rem;
    transition: border-color 0.16s ease, background-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}

.mmu-sakamichi-button:hover {
    border-color: rgba(15, 118, 110, 0.32);
    background: rgba(236, 253, 245, 0.88);
    transform: translateY(-1px);
}

.mmu-sakamichi-button:active {
    transform: translateY(0);
}

.mmu-sakamichi-button.is-selected {
    border-color: rgba(15, 118, 110, 0.42);
    background: linear-gradient(180deg, rgba(204, 251, 241, 0.95), rgba(255, 255, 255, 1));
    box-shadow: inset 0 0 0 2px rgba(15, 118, 110, 0.16);
}

.mmu-sakamichi-button:focus-visible,
.mmu-slot:focus-visible,
.mmu-primary:focus-visible,
.mmu-share-x-button:focus-visible,
.mmu-track-option:focus-visible {
    outline: 2px solid rgba(15, 118, 110, 0.45);
    outline-offset: 2px;
}

.mmu-board {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
}

.mmu-slot {
    border: 1px solid rgba(15, 23, 42, 0.14);
    border-radius: 0.95rem;
    background: #ffffff;
    aspect-ratio: 1 / 1;
    padding: 0;
    position: relative;
    overflow: hidden;
    display: block;
    cursor: pointer;
    transition: border-color 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.mmu-slot:hover {
    border-color: rgba(15, 118, 110, 0.3);
    transform: translateY(-1px);
    background: rgba(236, 253, 245, 0.85);
}

.mmu-slot:active {
    transform: translateY(0);
}

.mmu-slot.is-selected {
    border-color: rgba(15, 118, 110, 0.42);
    box-shadow: inset 0 0 0 2px rgba(15, 118, 110, 0.16);
    background: linear-gradient(180deg, rgba(204, 251, 241, 0.95), rgba(255, 255, 255, 1));
}

.mmu-slot:disabled {
    cursor: default;
}

.mmu-slot:disabled:hover {
    transform: none;
    border-color: rgba(15, 23, 42, 0.14);
    background: #ffffff;
}

.mmu-slot__index {
    position: absolute;
    top: 0.42rem;
    left: 0.42rem;
    z-index: 4;
    min-width: 1.6rem;
    height: 1.6rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.76rem;
    color: #ffffff;
    font-weight: 700;
    background: rgba(15, 23, 42, 0.66);
}

.mmu-slot__media,
.mmu-slot__empty {
    position: absolute;
    inset: 0;
}

.mmu-slot__image {
    width: 100%;
    height: 100%;
    border-radius: 0.95rem;
    object-fit: cover;
    object-position: center;
    background: #e5edf5;
}

.mmu-slot__image.is-missing {
    background: linear-gradient(135deg, #dff7f2, #e2e8f0);
}

.mmu-slot__overlay {
    position: absolute;
    inset: auto 0 0 0;
    z-index: 3;
    padding: 1.15rem 0.54rem 0.48rem;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.92) 100%);
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(15, 23, 42, 0.75);
}

.mmu-slot__title {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.22;
}

.mmu-slot__meta {
    display: block;
    margin-top: 0.24rem;
    font-size: 0.68rem;
    line-height: 1.25;
    color: rgba(255, 255, 255, 0.9);
}

.mmu-slot__empty {
    z-index: 1;
    color: #64748b;
    font-size: 0.84rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #f8fbff, #ecf7f4);
}

.mmu-board-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.mmu-primary {
    background: linear-gradient(135deg, #0f766e, #0ea5e9);
    border: none;
    color: #ffffff;
    font-weight: 700;
    border-radius: 0.75rem;
    min-height: 2.45rem;
}

.mmu-primary:hover,
.mmu-primary:active,
.mmu-primary:focus-visible,
.mmu-primary:disabled,
.mmu-share-x-button:hover,
.mmu-share-x-button:active,
.mmu-share-x-button:focus-visible,
.mmu-share-x-button:disabled {
    color: #ffffff;
}

.mmu-primary:hover {
    filter: brightness(1.05);
}

.mmu-primary:active {
    filter: brightness(0.98);
}

.mmu-primary:disabled,
.mmu-share-x-button:disabled {
    opacity: 0.55;
}

.mmu-share-x-button {
    background: #111827;
    border: 1px solid #111827;
    color: #ffffff;
    font-weight: 700;
    border-radius: 0.75rem;
    min-height: 2.45rem;
}

.mmu-share-x-button:hover {
    background: #1f2937;
    border-color: #1f2937;
}

.mmu-share-x-button:active {
    background: #0f172a;
    border-color: #0f172a;
}

.mmu-share-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
    flex-wrap: wrap;
}

.mmu-track-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
    max-height: min(60vh, 640px);
    overflow-y: auto;
    padding-right: 0.2rem;
}

.mmu-track-option {
    width: 100%;
    border: 1px solid rgba(15, 23, 42, 0.14);
    border-radius: 0.82rem;
    min-height: 76px;
    background: #ffffff;
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr);
    gap: 0.72rem;
    align-items: center;
    padding: 0.5rem;
    text-align: left;
    transition: border-color 0.16s ease, background-color 0.16s ease, transform 0.16s ease;
}

.mmu-track-option:hover {
    border-color: rgba(15, 118, 110, 0.3);
    background: rgba(236, 253, 245, 0.88);
    transform: translateY(-1px);
}

.mmu-track-option:active {
    transform: translateY(0);
}

.mmu-track-option.is-selected-track {
    border-color: rgba(15, 118, 110, 0.42);
    box-shadow: inset 0 0 0 2px rgba(15, 118, 110, 0.16);
}

.mmu-track-option__art {
    width: 58px;
    height: 58px;
    border-radius: 0.8rem;
    object-fit: cover;
    background: #dbe7f0;
}

.mmu-track-option__art.is-missing {
    background: linear-gradient(135deg, #dff7f2, #e2e8f0);
}

.mmu-track-option__body {
    min-width: 0;
}

.mmu-track-option__title-row,
.mmu-track-option__meta {
    display: flex;
    align-items: center;
    gap: 0.42rem;
    flex-wrap: wrap;
}

.mmu-track-option__title {
    min-width: 0;
    font-size: 0.96rem;
    font-weight: 700;
    line-height: 1.32;
    overflow-wrap: anywhere;
}

.mmu-track-option__meta {
    margin-top: 0.18rem;
    color: var(--mmu-muted);
    font-size: 0.78rem;
}

.mmu-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.16rem 0.46rem;
    border-radius: 999px;
    background: rgba(15, 118, 110, 0.1);
    color: var(--mmu-primary);
    font-size: 0.7rem;
    font-weight: 700;
}

.mmu-badge--selected {
    background: rgba(15, 23, 42, 0.12);
    color: #0f172a;
}

.mmu-empty {
    color: var(--mmu-muted);
    font-size: 0.92rem;
}

@media (max-width: 991.98px) {
    .mmu-board-actions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767.98px) {
    .mmu-board {
        gap: 0.5rem;
    }

    .mmu-slot__title {
        font-size: 0.72rem;
    }

    .mmu-slot__meta {
        font-size: 0.62rem;
    }

    .mmu-track-option {
        grid-template-columns: 52px minmax(0, 1fr);
        gap: 0.6rem;
    }

    .mmu-track-option__art {
        width: 52px;
        height: 52px;
    }
}

@media (max-width: 575.98px) {
    .mmu-page {
        padding-left: 0.5rem;
        padding-right: 0.5rem;
    }

    .mmu-board {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (prefers-reduced-motion: reduce) {
    .mmu-sakamichi-button,
    .mmu-slot,
    .mmu-track-option {
        transition: none;
    }
}