/* ============================================
   AUDIO — Music toggle button + hint popup
   ============================================ */

/* ---- Music Toggle Button ---- */
.music-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    color: var(--text-tertiary);
    font-size: 0.95rem;
    cursor: pointer;
    position: relative;
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}

.music-toggle:hover {
    background: var(--purple-wash);
    border-color: var(--border-hover);
    color: var(--purple-vivid);
    transform: scale(1.05);
}

[data-theme="dark"] .music-toggle:hover {
    background: var(--bg-card-hover);
}

/* Playing state — pulsing ring */
.music-toggle.playing {
    color: var(--purple-vivid);
    border-color: var(--purple-vivid);
}

.music-toggle.playing::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: var(--radius-full);
    border: 2px solid var(--purple-glow);
    animation: musicPulse 1.5s ease-in-out infinite;
    pointer-events: none;
}

@keyframes musicPulse {

    0%,
    100% {
        opacity: 0.4;
        transform: scale(1);
    }

    50% {
        opacity: 0.1;
        transform: scale(1.15);
    }
}

/* Equalizer-style bars when playing (replaces icon visually) */
.music-toggle.playing i {
    animation: musicBounce 0.6s ease-in-out infinite alternate;
}

@keyframes musicBounce {
    0% {
        transform: scale(1);
    }

    100% {
        transform: scale(1.15);
    }
}

/* ---- Music Hint Popup ---- */
.music-hint {
    position: fixed;
    bottom: 90px;
    right: 30px;
    z-index: 3000;
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity var(--transition-smooth),
        transform var(--transition-smooth);
    pointer-events: none;
}

.music-hint.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.music-hint__inner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-hover);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: 0.88rem;
    color: var(--text-primary);
    white-space: nowrap;
}

.music-hint__inner>i {
    color: var(--purple-vivid);
    font-size: 1rem;
}

.music-hint__inner>span {
    font-weight: 500;
}

.music-hint__yes,
.music-hint__no {
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition:
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.music-hint__yes {
    background: linear-gradient(135deg, var(--purple-deep), var(--purple-vivid));
    color: #fff;
}

.music-hint__yes:hover {
    box-shadow: 0 2px 8px rgba(74, 45, 138, 0.3);
}

.music-hint__no {
    background: var(--bg-primary);
    color: var(--text-tertiary);
    border: 1px solid var(--border-default);
}

.music-hint__no:hover {
    border-color: var(--border-hover);
    color: var(--text-secondary);
}

/* Mobile adjustments */
@media (max-width: 480px) {
    .music-hint {
        bottom: 75px;
        right: 16px;
        left: 16px;
    }

    .music-hint__inner {
        flex-wrap: wrap;
        justify-content: center;
        white-space: normal;
        text-align: center;
        gap: var(--space-xs);
    }
}

/* ---- Reduced Motion ---- */
@media (prefers-reduced-motion: reduce) {
    .music-toggle.playing::after {
        animation: none;
    }

    .music-toggle.playing i {
        animation: none;
    }
}