:root {
    --bg: #fafaf8;
    --panel: #ffffff;
    --border: #e5e2da;
    --text: #2b2b28;
    --muted: #8a867c;
    --accent: #3d6b5c;
    --accent-light: #eaf1ee;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans",
        "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
    font-size: 15px;
    line-height: 1.2;
    color: var(--text);
    background: var(--bg);
}

/* サイドバー */
aside {
    width: 240px;
    flex-shrink: 0;
    padding: 20px 16px;
    background: var(--panel);
    border-right: 1px solid var(--border);
    line-height: 1.2;
}

aside h1 {
    margin: 0 0 14px;
    font-size: 16px;
    line-height: 1.2;
}

aside h1 a {
    color: var(--text);
    text-decoration: none;
}

aside h1 a:hover {
    color: var(--accent);
}

aside form {
    margin-bottom: 14px;
}

aside input[type="text"] {
    width: 100%;
    padding: 7px 9px;
    font: inherit;
    font-size: 13px;
    line-height: 1.2;
    color: var(--text);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
}

aside input[type="text"]:focus {
    outline: 2px solid var(--accent-light);
    border-color: var(--accent);
}

aside h2 {
    margin: 14px 0 5px;
    font-size: 11px;
    line-height: 1.2;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sidebar-more {
    margin: 4px 0 0;
    font-size: 12px;
    line-height: 1.2;
}

.sidebar-more a {
    color: var(--muted);
}

.sidebar-more a:hover {
    color: var(--accent);
}

aside ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

aside li {
    margin-bottom: 2px;
    font-size: 13px;
    line-height: 1.2;
}

aside a {
    color: var(--accent);
    text-decoration: none;
}

aside a:hover {
    text-decoration: underline;
}

/* メインコンテンツ */
main {
    flex: 1;
    max-width: 88vw;
    margin: 0 auto;
    padding: 32px 40px;
}

.page-title {
    margin: 0 0 3px;
    font-size: 26px;
    font-weight: 700;
    line-height: 1.15;
}

.page-meta {
    font-size: 12px;
    line-height: 1.2;
    color: var(--muted);
}

.page-body {
    font-size: 15px;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: normal;
}

/* Wikiリンク・タグ */
.wiki-link {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid var(--accent-light);
}

.wiki-link:hover {
    border-bottom-color: var(--accent);
}

.wiki-link.new {
    color: #b8794a;
    border-bottom-style: dashed;
}

.tag-link {
    display: inline-block;
    padding: 1px 6px;
    font-size: 13px;
    line-height: 1.2;
    color: #6a6560;
    text-decoration: none;
    background: var(--accent-light);
    border-radius: 10px;
}

.tag-link:hover {
    color: var(--accent);
}

/* ページ上部・下部の区切り線 */
.page-title-divider {
    margin: 12px 0 20px;
    border: none;
    border-top: 1px solid var(--border);
}

.page-footer-divider {
    margin: 28px 0 16px;
    border: none;
    border-top: 1px solid var(--border);
}

/* ツールバー */
.toolbar {
    line-height: 1.2;
    margin-bottom: 8px;
}

.toolbar a,
.toolbar button {
    display: inline-block;
    margin-right: 6px;
    padding: 5px 10px;
    font: inherit;
    font-size: 13px;
    line-height: 1.2;
    color: var(--accent);
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.toolbar a:hover,
.toolbar button:hover {
    background: var(--accent-light);
    border-color: var(--accent);
}

/* 編集フォーム */
textarea {
    width: %;
    height: 400px;
    padding: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 14px;
    line-height: 1.2;
    color: var(--text);
    resize: both;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
}

textarea:focus {
    outline: 2px solid var(--accent-light);
    border-color: var(--accent);
}

.save-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 8px;
    line-height: 1.2;
}

.save-row input[type="submit"] {
    padding: 7px 16px;
    font: inherit;
    font-size: 14px;
    line-height: 1.2;
    color: #ffffff;
    cursor: pointer;
    background: var(--accent);
    border: none;
    border-radius: 6px;
}

.save-row input[type="submit"]:hover {
    opacity: 0.9;
}

.empty-msg {
    font-size: 14px;
    line-height: 1.2;
    color: var(--muted);
}

/* Markdown見出し */
.page-body h1,
.page-body h2,
.page-body h3,
.page-body h4,
.page-body h5,
.page-body h6 {
    margin: 0.9em 0 0.35em;
    font-weight: 700;
    line-height: 1.15;
}

.page-body h1:first-child,
.page-body h2:first-child,
.page-body h3:first-child,
.page-body h4:first-child,
.page-body h5:first-child,
.page-body h6:first-child {
    margin-top: 0;
}

.page-body h1 {
    font-size: 24px;
}

.page-body h2 {
    font-size: 20px;
}

.page-body h3 {
    font-size: 17px;
}

.page-body h4,
.page-body h5,
.page-body h6 {
    font-size: 15px;
}

/* Markdown本文 */
.page-body p {
    margin: 0 0 0.65em;
    line-height: 1.6;
}

.page-body p:last-child {
    margin-bottom: 0;
}

.page-body ul,
.page-body ol {
    margin: 0.4em 0 0.65em;
    padding-left: 1.6em;
    line-height: 1.2;
}

.page-body ul ul,
.page-body ul ol,
.page-body ol ul,
.page-body ol ol {
    margin-top: 0.15em;
    margin-bottom: 0.15em;
}

.page-body li {
    margin-bottom: 0.1em;
    line-height: 1.6;
}

.page-body li:last-child {
    margin-bottom: 0;
}

.page-body li.task-item {
    list-style: none;
    margin-left: -1.4em;
}

.page-body li.task-item label {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.page-body li.task-item input[type="checkbox"] {
    flex-shrink: 0;
}

.page-body blockquote {
    margin: 0.6em 0;
    padding: 0.25em 1em;
    line-height: 1.6;
    color: var(--muted);
    border-left: 3px solid var(--border);
}

.page-body blockquote p {
    margin-bottom: 0.4em;
}

.page-body blockquote p:last-child {
    margin-bottom: 0;
}

.page-body strong {
    font-weight: 700;
}

.page-body em {
    font-style: italic;
}

.page-body del {
    color: var(--muted);
}

/* コード */
.page-body pre {
    margin: 0.6em 0;
    padding: 12px 14px;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 13px;
    line-height: 1.25;
    white-space: pre;
    background: var(--accent-light);
    border-radius: 8px;
}

.page-body code {
    padding: 0.1em 0.35em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 0.9em;
    line-height: inherit;
    background: var(--accent-light);
    border-radius: 4px;
}

.page-body pre code {
    padding: 0;
    font-size: inherit;
    line-height: inherit;
    background: none;
    border-radius: 0;
}

/* 区切り線（Markdown由来） */
.page-body hr {
    margin: 1.1em 0;
    border: none;
    border-top: 1px solid var(--border);
}

/* 通常リンク */
.page-body a:not(.wiki-link):not(.tag-link) {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.page-body a:not(.wiki-link):not(.tag-link):hover {
    text-decoration-thickness: 2px;
}

/* 画像アップロード */
#drop-zone {
    position: relative;
}

#drop-zone.drag-over textarea {
    background: var(--accent-light);
    border-color: var(--accent);
}

.upload-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 6px;
    font-size: 13px;
    line-height: 1.2;
}

.upload-btn {
    display: inline-block;
    padding: 5px 12px;
    line-height: 1.2;
    color: var(--accent);
    cursor: pointer;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.upload-btn:hover {
    background: var(--accent-light);
    border-color: var(--accent);
}

#upload-status {
    line-height: 1.2;
    color: var(--muted);
}

/* 本文中の画像 */
.page-body img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0.6em 0;
    border-radius: 6px;
}

.page-body figure {
    margin: 0.75em 0;
}

.page-body figcaption {
    margin-top: 0.3em;
    font-size: 13px;
    line-height: 1.2;
    color: var(--muted);
}

/* テーブル */
.page-body table {
    width: %;
    margin: 0.6em 0;
    font-size: 14px;
    line-height: 1.2;
    border-collapse: collapse;
}

.page-body th,
.page-body td {
    padding: 6px 10px;
    line-height: 1.6;
    text-align: left;
    vertical-align: top;
    border: 1px solid var(--border);
}

.page-body th {
    font-weight: 600;
    background: var(--accent-light);
}

.page-body tbody tr:nth-child(even) {
    background: rgba(234, 241, 238, 0.25);
}

/* フォーカス表示 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* スマートフォン・タブレット */
@media (max-width: 760px) {
    body {
        display: block;
        line-height: 1.2;
    }

    aside {
        width: 100%;
        padding: 14px 16px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    aside h1 {
        margin-bottom: 8px;
    }

    aside form {
        margin-bottom: 8px;
    }

    aside h2 {
        margin-top: 10px;
    }

    main {
        max-width: none;
        padding: 24px 18px;
    }

    .page-title {
        font-size: 23px;
        line-height: 1.15;
    }

    .page-body {
        font-size: 15px;
        line-height: 1.6;
    }

    .toolbar {
        display: flex;
        gap: 6px;
        flex-wrap: wrap;
    }

    .toolbar a,
    .toolbar button {
        margin-right: 0;
    }

    .upload-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 5px;
    }

    .page-body table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* 小型スマートフォン */
@media (max-width: 480px) {
    main {
        padding: 20px 14px;
    }

    .page-title {
        font-size: 21px;
        line-height: 1.15;
    }

    .page-body {
        font-size: 14px;
        line-height: 1.6;
    }

    textarea {
        height: 320px;
        font-size: 13px;
        line-height: 1.2;
    }

    .save-row {
        align-items: stretch;
        flex-direction: column;
    }

    .save-row input[type="submit"] {
        width: 100%;
    }
}

/* 被リンク一覧 */
.backlinks {
    margin: 10px 0 0;
    padding: 0;
    list-style: none;
}

.backlinks li {
    margin-bottom: 3px;
    font-size: 14px;
    line-height: 1.4;
}

/* 保護ページのロック画面 */
.unlock-form {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-top: 12px;
}

.unlock-form input[type="password"] {
    padding: 7px 9px;
    font: inherit;
    font-size: 14px;
    border: 1px solid var(--border);
    border-radius: 6px;
}

.unlock-form input[type="submit"] {
    padding: 7px 16px;
    font: inherit;
    font-size: 14px;
    color: #ffffff;
    cursor: pointer;
    background: var(--accent);
    border: none;
    border-radius: 6px;
}