/* Ruby hidden state */
body.ruby-hidden rt,
body.ruby-hidden rtc,
body.ruby-hidden rp {
    display: none !important;
}

/* Ruby visible state */
@media screen {
    html body:not(.ruby-hidden) ruby {
        display: ruby !important;
    }

    html body:not(.ruby-hidden) rt,
    html body:not(.ruby-hidden) rtc {
        display: ruby-text !important;
        visibility: visible !important;
    }

    html body:not(.ruby-hidden) rp {
        display: none !important;
    }
}

/* Toggle button */
body .ruby-toggle-button {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 9999;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, #1f6feb, #7844ff);
    color: #ffffff;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

/* PC版は大きめに */
@media screen and (min-width: 835px) {
    body .ruby-toggle-button {
        padding: 14px 22px;
        gap: 12px;
    }
    
    body .ruby-toggle-button .label {
        font-size: 16px;
    }
    
    body .ruby-toggle-button .dot {
        width: 13px;
        height: 13px;
    }
}

/* スマホ版は下部右 */
@media screen and (max-width: 834px) {
    body .ruby-toggle-button {
        top: auto;
        bottom: 20px;
    }
}

body .ruby-toggle-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.26);
}

body .ruby-toggle-button:active {
    transform: translateY(0);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.20);
}

body .ruby-toggle-button:focus-visible {
    outline: 2px solid #ffffff;
    outline-offset: 3px;
}

body .ruby-toggle-button .dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.18);
    transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

body:not(.ruby-hidden) .ruby-toggle-button .dot {
    transform: scale(1.15);
    background: #ffe066;
    box-shadow: 0 0 0 4px rgba(255, 224, 102, 0.28);
}

body .ruby-toggle-button .label {
    white-space: nowrap;
    font-size: 14px;
}