:root {
    color-scheme: light dark;
}
body {
    margin: 0;
    background-color: #f4f4f4;
    color: #000000;
    font-size: 16px;
}

body {
    background-color: light-dark(#f4f4f4, #f4f4f4);
    color: light-dark(#000000, #000000);
}

form input,
form textarea,
form select,
form button {
    color-scheme: light;
}

a {
    color: #0000FF;
    color: light-dark(
        #0000FF,
        #0000FF    );
}
a:visited {
    color: #663399;
    color: light-dark(
        #663399,
        #663399    );
}
a:active {
    color: #FF0000;
    color: light-dark(
        #FF0000,
        #FF0000    );
}

.quote-text {
    color: #666666;
    color: light-dark(
        #666666,
        #666666    );
}

.comment-text {
    color: #333333;
    color: light-dark(
        #333333,
        #333333    );
}

.note-text {
    color: #333333;
    color: light-dark(
        #333333,
        #333333    );
}

.name {
    color: #007700;
    color: light-dark(
        #007700,
        #007700    );
}

.cap {
    color: #ff4500;
    color: light-dark(
        #ff4500,
        #ff4500    );
}

.deleted-message {
    color: #ff0000;
    color: light-dark(
        #ff0000,
        #ff0000    );
}

.error-message {
    color: #ff0000;
    color: light-dark(
        #ff0000,
        #ff0000    );
}

hr {
    border: none;
    border-top: 1px solid #000000;
    border-top-color: light-dark(
        #000000,
        #000000    );
}

.embed-post {
    background-color: #f4f4f4;
    color: #000000;
    background-color: light-dark(
        #f4f4f4,
        #f4f4f4    );
    color: light-dark(
        #000000,
        #000000    );
}

mark {
    background-color: transparent;
    color: inherit;
    margin: 0 5px;
}

/* パンくずリスト */
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    list-style: none;
    padding-left: 0;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    display: inline-block;
    padding: 0 0.5rem;
    content: ">";
    vertical-align: middle;

    color: #000000;
    color: light-dark(
        #000000,
        #000000    );
}

/* 最後のパンくずリスト項目のリンクを無効にする */
.breadcrumb-item:last-child a {
    pointer-events: none;
    color: inherit;
    text-decoration: none;
}

/* スマートフォン用スタイル */
@media (max-width: 640px) {
    .embed-contents {
        position: relative;
        width: 100%;
        max-height: 200px;
        overflow: hidden;
    }
    .embed-instagram {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-video iframe {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube iframe {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube {
        width: 100%;
        height: 360px !important;
        max-height: 360px !important;
    }

    .img-thumbnail, .embed-youtube-img, .embed-image, .video-thumbnail {
        max-width: 128px;
        max-height: auto;
    }
}

/* パソコン用スタイル */
@media (min-width: 641px) {
    .embed-contents {
        position: relative;
        width: 100%;
        max-height: 350px;
        overflow: hidden;
    }

    .embed-instagram {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-video iframe {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .embed-youtube iframe {
        width: 600px;
        height: 360px !important;
        max-height: 360px !important;
    }

    .img-thumbnail, .embed-youtube-img, .embed-image, .video-thumbnail {
        max-width: 128px;
        max-height: auto;
        cursor: pointer;
    }
}

img.emoji {
    height: 1em;
    width: 1em;
    margin: 0 .05em 0 .1em;
    vertical-align: -0.1em;
}

img {
    max-height: 512px;
}

@media (max-width: 1024px) { 
  @view-transition {
    navigation: auto;
  }

  ::view-transition-old(root) {
    animation: fadeOut 0.5s ease forwards;
  }

  ::view-transition-new(root) {
    animation: fadeIn 0.5s ease forwards;
  }


  @keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
}