/* ========================================
   星野みあ・星野湊 ウォーキングキャラクター
======================================== */

.site-mascot-lane {
    position: fixed;
    z-index: 998;
    right: 0;
    bottom: 70px;
    left: 0;
    height: 150px;
    overflow: hidden;
    pointer-events: none;
    user-select: none;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.site-mascot-pair {
    --walk-duration: 20s;
    --walk-delay: -2s;

    position: absolute;
    bottom: 0;
    left: 12px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    width: max-content;
    height: 140px;
    animation:
        site-mascot-pair-walk
        var(--walk-duration)
        linear
        var(--walk-delay)
        infinite;
    will-change: transform;
}

.site-mascot {
    --character-height: 136px;
    --frame-count: 4;
    --frame-duration: 0.72s;
    --frame-ratio: 0.75;
    --character-width: calc(
        var(--character-height) *
        var(--frame-ratio)
    );

    position: relative;
    flex: 0 0 auto;
    width: var(--character-width);
    height: var(--character-height);
    animation:
        site-mascot-facing
        var(--walk-duration)
        linear
        var(--walk-delay)
        infinite;
    will-change: transform;
}

.site-mascot--mia {
    --character-height: 136px;
}

.site-mascot--minato {
    --character-height: 132px;
}

.site-mascot__sprite-window {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.site-mascot__sprite-sheet {
    display: block;
    width: auto;
    max-width: none;
    height: 100%;
    animation:
        site-mascot-frames
        var(--frame-duration)
        steps(var(--frame-count), end)
        infinite;
    will-change: transform;
}

@keyframes site-mascot-frames {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-100%);
    }
}

@keyframes site-mascot-pair-walk {
    0% {
        transform: translateX(0);
    }

    50% {
        transform: translateX(
            calc(100vw - 100% - 24px)
        );
    }

    100% {
        transform: translateX(0);
    }
}

@keyframes site-mascot-facing {
    0%,
    49.999% {
        transform: scaleX(-1);
    }

    50%,
    99.999% {
        transform: scaleX(1);
    }

    100% {
        transform: scaleX(-1);
    }
}

@media screen and (max-width: 768px) {
    .site-mascot-lane {
        right: 0;
        bottom: calc(82px + env(safe-area-inset-bottom, 0px));
        left: 0;
        display: block !important;
        height: 108px;
        visibility: visible !important;
        opacity: 1 !important;
    }

    .site-mascot-pair {
        display: flex !important;
        left: 8px;
        gap: 5px;
        height: 102px;
        visibility: visible !important;
        opacity: 1 !important;
        --walk-duration: 17s;
    }

    .site-mascot {
        display: block !important;
        --character-height: 98px;
        visibility: visible !important;
        opacity: 1 !important;
    }

    .site-mascot--mia {
        --character-height: 98px;
    }

    .site-mascot--minato {
        --character-height: 94px;
    }
}

/* ハンバーガーメニューを開いている間は非表示 */
body.menu-open .site-mascot-lane {
    visibility: hidden !important;
    opacity: 0 !important;
}

@media (prefers-reduced-motion: reduce) {
    .site-mascot-pair,
    .site-mascot,
    .site-mascot__sprite-sheet {
        animation-play-state: paused;
    }
}