/**
 * 九物語 — なろう系（narou）読書レイアウト
 * read.php（genre=narou）: 本文のみスクロール・PC はなろう相当幅
 */

/* --- 読書ページ: ビューポート固定・本文だけ scroll --- */
html.km-narou-read-page {
    height: 100%;
    width: 100%;
    overflow: hidden;
    overflow-x: clip;
}

html.km-narou-read-page,
body.km-narou-mode.km-narou-read-page {
    height: 100%;
    overflow-x: hidden;
    max-width: 100%;
}

body.km-narou-mode.km-narou-read-page {
    display: flex;
    flex-direction: column;
    height: 100dvh;
    max-height: 100dvh;
    width: 100%;
    overflow: hidden;
    background: #faf9f6;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body.km-narou-mode.km-narou-read-page *,
body.km-narou-mode.km-narou-read-page *::before,
body.km-narou-mode.km-narou-read-page *::after {
    box-sizing: border-box;
}

/* 携帯: 読書専用1行ヘッダー（サイトヘッダーは非表示） */
.km-narou-read-mobile-bar {
    display: none;
}

@media (max-width: 720px) {
    body.km-narou-mode.km-narou-read-page {
        position: fixed;
        inset: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 100%;
        height: 100dvh;
        max-height: 100dvh;
        overflow: hidden;
        touch-action: manipulation;
    }

    body.km-narou-mode.km-narou-read-page .km-header,
    body.km-narou-mode.km-narou-read-page .km-header--site,
    body.km-narou-mode.km-narou-read-page .km-nav-mobile {
        display: none !important;
    }

    .km-narou-read-mobile-bar {
        flex-shrink: 0;
        display: grid;
        grid-template-columns: auto auto 1fr auto;
        align-items: center;
        gap: 4px;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        padding: 8px max(10px, env(safe-area-inset-right, 0px)) 8px max(10px, env(safe-area-inset-left, 0px));
        padding-top: max(8px, env(safe-area-inset-top, 0px));
        background: #fff;
        border-bottom: 1px solid var(--dt-border, #e8e6e1);
        z-index: 50;
    }

    body.km-narou-mode.km-narou-read-page .km-narou-reader-chrome {
        display: none;
    }

    body.km-narou-mode.km-narou-read-page .km-narou-scroll-head {
        display: block;
    }
}

@media (min-width: 721px) {
    .km-narou-read-mobile-bar {
        display: none !important;
    }

    .km-narou-scroll-head {
        display: none;
    }
}

.km-narou-mbar-link {
    flex-shrink: 0;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--dt-accent-hover, #4f46e5);
    text-decoration: none;
    white-space: nowrap;
    padding: 6px 4px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
}

.km-narou-mbar-link:hover {
    text-decoration: underline;
}

.km-narou-mbar-link--disabled {
    color: #c4c4c4;
    pointer-events: none;
}

.km-narou-mbar-toc {
    margin-right: 2px;
}

.km-narou-mbar-title {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-align: center;
    font-size: 0.82rem;
    font-weight: 700;
    color: #1e1b2e;
    padding: 0 4px;
}

.km-narou-mbar-link--next {
    justify-self: end;
}

.km-narou-scroll-head {
    display: none;
    text-align: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px dashed var(--dt-border, #ebe8e2);
}

body.km-narou-mode.km-narou-read-page .km-header {
    position: relative;
    top: auto;
    flex-shrink: 0;
    z-index: 40;
}

body.km-narou-mode.km-narou-read-page .km-header-inner {
    padding: 8px 0;
}

body.km-narou-mode.km-narou-read-page .km-nav-list,
body.km-narou-mode.km-narou-read-page .km-header-tools,
body.km-narou-mode.km-narou-read-page .km-header-cta .km-btn:not(.km-nav-toggle) {
    display: none;
}

body.km-narou-mode.km-narou-read-page .km-header-cta {
    margin-left: auto;
}

body.km-narou-mode.km-narou-read-page .km-brand-tag {
    display: none;
}

body.km-narou-mode.km-narou-read-page .km-section.km-narou-reader {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    width: 100%;
    max-width: 100%;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.km-narou-reader-shell {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    background: #fff;
    border-left: 1px solid var(--dt-border, #e8e6e1);
    border-right: 1px solid var(--dt-border, #e8e6e1);
    box-shadow: 0 0 24px rgba(30, 27, 46, 0.04);
    overflow: hidden;
}

.km-narou-reader-chrome {
    flex-shrink: 0;
    padding: 0 16px 10px;
    border-bottom: 1px solid var(--dt-border, #ebe8e2);
    background: #fff;
}

.km-narou-reader-nav {
    margin-bottom: 0.5rem;
    padding-top: 8px;
}

.km-narou-reader-head {
    text-align: center;
}

.km-narou-reader-work {
    margin: 0 0 4px;
    font-size: 0.78rem;
    color: var(--dt-text-muted, #6b7280);
    letter-spacing: 0.06em;
}

body.km-narou-mode .km-chapter-title {
    font-size: 1.2rem;
    text-align: center;
    margin: 0;
    padding-bottom: 0;
    border-bottom: none;
    line-height: 1.45;
    font-weight: 700;
}

/* 本文スクロール領域（ここだけ overflow） */
.km-narou-scroll {
    flex: 1 1 auto;
    min-height: 0;
    min-width: 0;
    width: 100%;
    max-width: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    overscroll-behavior-x: none;
    -webkit-overflow-scrolling: touch;
    padding: 18px max(18px, env(safe-area-inset-right, 0px)) 28px max(18px, env(safe-area-inset-left, 0px));
    background: #fffdf9;
    touch-action: pan-y;
}

.km-narou-reader-article {
    margin: 0;
    min-width: 0;
    max-width: 100%;
}

body.km-narou-mode .km-prose {
    font-size: 15px;
    line-height: 2;
    letter-spacing: 0.05em;
    font-family: "Hiragino Mincho ProN", "Yu Mincho", "MS PMincho", "Noto Serif JP", serif;
    color: #1a1a1a;
    word-break: break-word;
    overflow-wrap: anywhere;
    max-width: 100%;
    min-width: 0;
}

body.km-narou-mode .km-prose p,
body.km-narou-mode .km-prose li,
body.km-narou-mode .km-prose blockquote {
    max-width: 100%;
    overflow-wrap: anywhere;
}

body.km-narou-mode .km-prose img,
body.km-narou-mode .km-prose video,
body.km-narou-mode .km-prose iframe,
body.km-narou-mode .km-prose table {
    max-width: 100%;
    height: auto;
}

body.km-narou-mode .km-prose pre {
    max-width: 100%;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
}

body.km-narou-mode .km-prose p {
    margin: 0 0 0.85em;
    text-indent: 1em;
}

body.km-narou-mode .km-prose h2 {
    font-size: 1.05rem;
    margin: 1.75rem 0 1rem;
    text-align: center;
    font-weight: 700;
    text-indent: 0;
}

body.km-narou-mode .km-prose blockquote {
    margin: 1em 0;
    padding: 0.5em 1em;
    border-left: 3px solid #d4d0c8;
    text-indent: 0;
}

/* 下固定: 前後話 */
.km-narou-reader-foot {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom, 0px));
    border-top: 1px solid var(--dt-border, #ebe8e2);
    background: #fff;
    font-size: 0.92rem;
}

.km-narou-foot-link {
    color: var(--dt-accent-hover, #4f46e5);
    text-decoration: none;
    font-weight: 600;
    padding: 6px 4px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.km-narou-foot-link:hover {
    text-decoration: underline;
}

.km-narou-foot-link--next {
    margin-left: auto;
}

.km-narou-foot-spacer {
    flex: 1;
}

.km-narou-nav-btn {
    min-height: 40px;
}

/* --- PC: 小説家になろう相当（約680px・17px・行間2） --- */
@media (min-width: 721px) {
    body.km-narou-mode.km-narou-read-page .km-header-inner {
        max-width: 680px;
        margin: 0 auto;
        padding-left: 16px;
        padding-right: 16px;
    }

    body.km-narou-mode.km-narou-read-page .km-nav-list {
        display: flex;
    }

    body.km-narou-mode.km-narou-read-page .km-header-tools {
        display: flex;
    }

    body.km-narou-mode.km-narou-read-page .km-header-cta .km-btn:not(.km-nav-toggle) {
        display: inline-flex;
    }

    body.km-narou-mode.km-narou-read-page .km-brand-tag {
        display: block;
    }

    .km-narou-reader-chrome {
        padding: 0 24px 12px;
    }

    .km-narou-scroll {
        padding: 24px 28px 36px;
    }

    body.km-narou-mode .km-prose {
        font-size: 17px;
        line-height: 2.05;
        letter-spacing: 0.06em;
    }

    body.km-narou-mode .km-chapter-title {
        font-size: 1.35rem;
    }

    .km-narou-reader-foot {
        padding-left: 24px;
        padding-right: 24px;
    }
}

/* --- 携帯: 余白・タップ領域・横ずれ防止 --- */
@media (max-width: 720px) {
    body.km-narou-mode.km-narou-read-page .km-section.km-narou-reader {
        width: 100%;
        max-width: 100%;
        min-width: 0;
    }

    .km-narou-reader-shell {
        max-width: 100%;
        width: 100%;
        border-left: none;
        border-right: none;
        box-shadow: none;
        margin: 0;
    }

    .km-narou-scroll {
        padding: 14px max(14px, env(safe-area-inset-right, 0px)) 20px max(14px, env(safe-area-inset-left, 0px));
    }

    body.km-narou-mode .km-prose {
        font-size: 15px;
        line-height: 1.95;
    }

    body.km-narou-mode .km-chapter-title {
        font-size: 1.1rem;
    }

    .km-narou-reader-foot {
        padding-left: max(14px, env(safe-area-inset-left, 0px));
        padding-right: max(14px, env(safe-area-inset-right, 0px));
    }
}

@media (max-width: 480px) {
    .km-narou-reader-nav .km-btn-sm {
        font-size: 0.82rem;
        padding: 6px 10px;
    }
}

/* --- work.php 目次（非読書ページ） --- */
body.km-narou-mode:not(.km-narou-read-page) .km-read-layout {
    max-width: 680px;
}

body.km-narou-mode .km-work-header-block {
    border-bottom: 1px solid var(--dt-border, #e5e7eb);
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}

body.km-narou-mode .km-page-title {
    font-size: 1.65rem;
    letter-spacing: 0.02em;
}

body.km-narou-mode .km-synopsis {
    font-size: 0.95rem;
    line-height: 1.75;
    color: var(--dt-text-muted, #4b5563);
}

body.km-narou-mode .km-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

body.km-narou-mode .km-toc-list li {
    border-bottom: 1px solid var(--dt-border, #e5e7eb);
    padding: 0.65rem 0;
}

body.km-narou-mode .km-toc-list a {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.75rem;
    text-decoration: none;
    color: inherit;
    font-size: 0.98rem;
    min-height: 44px;
    align-items: center;
}

body.km-narou-mode .km-toc-list a:hover {
    color: var(--dt-accent-hover, #4f46e5);
}

body.km-narou-mode .km-read-nav {
    margin-bottom: 1.25rem;
}

body.km-narou-mode .km-genre-badge--narou {
    background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
    color: #4338ca;
}