/* MathForge compact soundtrack controls — July 2026 */
.mf-mini-music {
    width: min(100%, 640px);
    margin-top: 18px;
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 18px;
    border: 1px solid rgba(147, 197, 253, 0.22);
    background: rgba(15, 23, 42, 0.52);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.06);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.mf-mini-music-title {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    flex: 0 0 auto;
    color: #e0f2fe;
    font-size: 0.8rem;
}

.mf-mini-music-title > span {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
}

.mf-mini-power {
    position: relative;
    flex: 0 0 auto;
    cursor: pointer;
}

.mf-mini-power input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.mf-mini-power-track {
    position: relative;
    width: 42px;
    height: 24px;
    display: block;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.35);
    transition: 0.2s ease;
}

.mf-mini-power-track span {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 3px 9px rgba(0,0,0,0.25);
    transition: 0.2s ease;
}

.mf-mini-power input:checked + .mf-mini-power-track {
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
}

.mf-mini-power input:checked + .mf-mini-power-track span {
    transform: translateX(18px);
}

.mf-mini-track-grid {
    min-width: 0;
    display: grid;
    grid-template-columns: repeat(4, minmax(54px, 1fr));
    gap: 6px;
    flex: 1 1 auto;
}

.mf-mini-track {
    min-height: 42px;
    padding: 5px 7px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    border-radius: 12px;
    color: #f8fafc;
    background: rgba(255,255,255,0.06);
    cursor: pointer;
    transition: 0.18s ease;
}

.mf-mini-track:hover,
.mf-mini-track.is-active {
    transform: translateY(-1px);
    border-color: rgba(125, 211, 252, 0.72);
    background: rgba(37, 99, 235, 0.22);
}

.mf-mini-track span { font-size: 1rem; }
.mf-mini-track small { font-size: 0.66rem; font-weight: 900; color: #dbeafe; }

.mf-mini-now-playing {
    max-width: 112px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #93c5fd;
    font-size: 0.68rem;
    font-weight: 850;
}

body.theme-light .mf-mini-music {
    background: rgba(255,255,255,0.82);
    border-color: rgba(37, 99, 235, 0.16);
}
body.theme-light .mf-mini-music-title,
body.theme-light .mf-mini-track { color: #0f172a; }
body.theme-light .mf-mini-track { background: #f8fafc; border-color: rgba(15,23,42,0.08); }
body.theme-light .mf-mini-track small { color: #334155; }

@media (max-width: 760px) {
    .mf-mini-music {
        width: 100%;
        margin-top: 16px;
        padding: 9px;
        gap: 7px;
        border-radius: 16px;
    }
    .mf-mini-music-title strong,
    .mf-mini-now-playing { display: none; }
    .mf-mini-music-title > span { width: 34px; height: 34px; }
    .mf-mini-track-grid { grid-template-columns: repeat(4, 1fr); }
    .mf-mini-track { min-width: 0; min-height: 38px; padding: 4px; }
    .mf-mini-track small { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    .mf-mini-track,
    .mf-mini-power-track,
    .mf-mini-power-track span { transition: none !important; }
}