/*
Theme Name: KOKO.BLOG
Theme URI: https://koko.blog/
Author: 井上 光貴
Author URI: https://koko-pro.com/
Description: KOKO.BLOGオリジナルテーマ。練色ベースの和モダンデザイン。
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: koko-blog
Tags: blog, japanese
*/

/* =========================================================
   Design System — CSS Custom Properties
   ========================================================= */
:root {
    --bg-base:          #FDFCFA;
    --text-main:        #434343;
    --text-bold:        #1C1C1C;
    --accent-primary:   #E9546B;
    --accent-secondary: #E6B422;
    --border-subtle:    #D3D3D3;
    --bg-tldr:          rgba(230,180,34,0.06);
    --cat-color:        var(--accent-primary);

    --font-base:   'Noto Sans JP', sans-serif;
    --font-mincho: 'Noto Serif JP', 'Georgia', serif;

    --max-width:      1100px;
    --content-width:  800px;
    --spacing:        1.5rem;

    /* カスタマイザー制御変数 */
    --h1-font-size:    clamp(1.8rem, 4.5vw, 2.3rem);
    --h1-accent-color: var(--accent-primary);
    --h2-font-size:    1.5rem;
    --h2-accent-color: var(--accent-primary);
    --eyecatch-radius: 12px;
    --announce-bg:     var(--accent-primary);
    --announce-color:  #FDFCFA;

    --transition-base:     0.4s cubic-bezier(0.25,0.8,0.25,1);
    --transition-interact: 0.2s cubic-bezier(0.4,0,0.2,1);
}

/* =========================================================
   ダークモード強制解除
   OS/スマホの夜間設定を無効化し、常に練色背景を維持
   ========================================================= */
:root { color-scheme: light only; }

@media (prefers-color-scheme: dark) {
    :root {
        --bg-base:       #FDFCFA !important;
        --text-main:     #434343 !important;
        --text-bold:     #1C1C1C !important;
        --border-subtle: #D3D3D3 !important;
        --bg-tldr:       rgba(230,180,34,0.06) !important;
    }
    html, body {
        background-color: #FDFCFA !important;
        color: #434343 !important;
    }
}

/* =========================================================
   Base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    font-family: var(--font-base);
    font-size: 16px;
    line-height: 1.9;
    letter-spacing: 0.04em;
    margin: 0; padding: 0;
    -webkit-font-smoothing: antialiased;
    font-feature-settings: "palt";
}
body.font-mincho { font-family: var(--font-mincho); }
@media (min-width: 768px) { body { font-size: 18px; } }

img { max-width: 100%; height: auto; display: block; }
a { color: var(--text-main); text-decoration: none; transition: opacity 0.3s ease; }
a:hover { opacity: 0.7; }
p { margin: 0 0 calc(var(--spacing)*1.2); }

/* =========================================================
   Announcement Bar
   ========================================================= */
.c-announce-bar {
    background-color: var(--announce-bg);
    color: var(--announce-color);
    text-align: center;
    padding: 0.55rem var(--spacing);
    font-size: 0.82rem;
    font-weight: 700;
    position: relative; z-index: 1000;
    line-height: 1.5;
}
.c-announce-bar a { color: inherit; text-decoration: underline; text-underline-offset: 3px; opacity: 1; }
.c-announce-bar a:hover { opacity: 0.82; }

/* =========================================================
   Layout
   ========================================================= */
.l-container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--spacing); }

/* =========================================================
   Progress Bar
   ========================================================= */
.c-progress-bar {
    position: fixed; top: 0; left: 0;
    width: 0%; height: 3px;
    background: var(--accent-primary);
    z-index: 2000; transition: width 0.1s ease-out;
    pointer-events: none;
}

/* =========================================================
   Global Header
   ========================================================= */
.c-announce-bar ~ .l-header,
.has-announce .l-header { top: 2.1rem; }

.l-header {
    position: fixed; top: 0; width: 100%;
    padding: calc(var(--spacing)*1.5) 0;
    background: transparent;
    transition: padding 0.3s, background 0.3s, box-shadow 0.3s;
    z-index: 900;
}
.l-header.is-scrolled {
    padding: calc(var(--spacing)*0.75) 0;
    background: var(--bg-base);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}
.l-header__inner { display: flex; justify-content: space-between; align-items: center; }
.l-header__logo {
    font-size: 1.3rem; font-weight: 700;
    color: var(--text-bold); letter-spacing: 0.08em;
    text-decoration: none; display: flex; align-items: center; gap: 0.5rem;
}
.l-header__logo img { height: 40px; width: auto; max-width: 200px; }

.l-header__nav-list { display: flex; gap: calc(var(--spacing)*1.5); list-style: none; margin: 0; padding: 0; }
.l-header__nav-link {
    font-weight: 700; font-size: 0.9rem;
    color: var(--text-main); opacity: 0.75;
    transition: opacity 0.3s, color 0.3s;
}
.l-header__nav-link:hover { opacity: 1; color: var(--accent-primary); }

/* Hamburger */
.c-nav-toggle {
    display: none; position: relative;
    width: 30px; height: 24px;
    background: none; border: none; cursor: pointer; z-index: 1100; padding: 0;
}
.c-nav-toggle span {
    position: absolute; left: 0;
    width: 100%; height: 2px;
    background: var(--text-bold); transition: var(--transition-base);
}
.c-nav-toggle span:nth-child(1) { top: 0; }
.c-nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.c-nav-toggle span:nth-child(3) { bottom: 0; }
.c-nav-toggle.is-active span:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.c-nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.c-nav-toggle.is-active span:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }

@media (max-width: 900px) {
    .c-nav-toggle { display: block; }
    .l-header__nav {
        position: fixed; top: 0; right: -100%;
        width: 80%; height: 100vh;
        background: var(--bg-base);
        padding: 100px 2rem; transition: var(--transition-base);
        box-shadow: -10px 0 30px rgba(0,0,0,0.05);
        z-index: 1050; overflow-y: auto;
    }
    .l-header__nav.is-active { right: 0; }
    .l-header__nav-list { flex-direction: column; gap: 2rem; }
    .l-header__nav-link { font-size: 1.2rem; }
}

/* =========================================================
   Main Layout (2-column)
   ========================================================= */
.l-main-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 4rem;
    padding-top: 150px;
    padding-bottom: 100px;
    align-items: start;
}
.has-announce .l-main-layout { padding-top: 172px; }
@media (max-width: 900px) { .l-main-layout { grid-template-columns: 1fr; padding-top: 120px; } }

.l-main-layout.no-sidebar {
    grid-template-columns: 1fr;
    max-width: var(--content-width);
    margin: 0 auto;
}

/* =========================================================
   Breadcrumb
   ========================================================= */
.c-breadcrumb {
    font-size: 0.78rem; opacity: 0.65;
    margin-bottom: 2rem;
    display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center;
}
.c-breadcrumb a { color: var(--text-main); }
.c-breadcrumb a:hover { color: var(--accent-primary); opacity: 1; }
.c-breadcrumb__sep { opacity: 0.5; }

/* =========================================================
   Post Grid
   ========================================================= */
.c-post-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 2.5rem; }
@media (max-width: 600px) { .c-post-grid { grid-template-columns: 1fr; } }

.c-post-card {
    background: var(--bg-base);
    border: 1px solid var(--border-subtle);
    border-radius: 12px; overflow: hidden;
    display: flex; flex-direction: column;
    text-decoration: none; color: inherit;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    backface-visibility: hidden;
}
.c-post-card:hover {
    transform: translateY(-8px) scale(1.01);
    border-color: rgba(67,67,67,0.08);
    box-shadow: 0 20px 40px rgba(67,67,67,0.05), 0 10px 20px rgba(233,84,107,0.08);
    opacity: 1;
}

.c-post-card__img-wrap {
    width: 100%; aspect-ratio: 16/9;
    background: var(--border-subtle); overflow: hidden;
}
.c-post-card__img-wrap img {
    width: 100%; height: 100%; object-fit: cover;
    transition: 0.8s cubic-bezier(0.25,0.8,0.25,1);
    border-radius: var(--eyecatch-radius,12px) var(--eyecatch-radius,12px) 0 0;
}
.c-post-card:hover .c-post-card__img-wrap img { transform: scale(1.06); }

.c-post-card__body { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.c-post-card__title {
    font-size: 1.05rem; font-weight: 700; color: var(--text-bold);
    line-height: 1.5; margin: 0.4rem 0 0.8rem;
    transition: var(--transition-interact);
}
.c-post-card:hover .c-post-card__title { color: var(--cat-color); }
.c-post-card__excerpt { font-size: 0.85rem; opacity: 0.8; line-height: 1.7; margin-bottom: 0.8rem; }
.c-post-card__footer {
    margin-top: auto;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.75rem; opacity: 0.55;
}

/* Category Label */
.c-category-label {
    color: var(--cat-color);
    font-size: 0.72rem; font-weight: 700;
    text-decoration: none; display: inline-block;
    margin-bottom: 0.3rem; transition: var(--transition-interact);
}
.c-category-label:hover { opacity: 0.8; }

/* Tag List */
.c-tag-list { display: flex; flex-wrap: wrap; gap: 0.4rem; list-style: none; padding: 0; margin: 0.5rem 0; }
.c-tag-item a, .c-tag-item span {
    font-size: 0.7rem; color: var(--text-main);
    padding: 2px 10px; border: 1px solid var(--border-subtle);
    border-radius: 20px; background: rgba(211,211,211,0.1);
    transition: 0.3s; display: inline-block;
}
.c-tag-item a:hover { border-color: var(--accent-primary); color: var(--accent-primary); opacity: 1; }

/* Pagination */
.c-pagination { display: flex; justify-content: center; gap: 0.7rem; margin-top: 4rem; flex-wrap: wrap; }
.c-pagination a, .c-pagination span {
    width: 40px; height: 40px;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid var(--border-subtle);
    text-decoration: none; color: inherit;
    border-radius: 4px; font-weight: 700; font-size: 0.9rem; transition: 0.3s;
}
.c-pagination a:hover { border-color: var(--accent-primary); color: var(--accent-primary); opacity: 1; }
.c-pagination .current, .c-pagination .page-numbers.current {
    background: var(--accent-secondary); color: #fff;
    border-color: var(--accent-secondary); pointer-events: none;
}

/* =========================================================
   Single Post
   ========================================================= */
.l-single { padding-top: 150px; padding-bottom: 80px; }
.has-announce .l-single { padding-top: 172px; }
.l-single__inner { display: grid; grid-template-columns: 1fr 280px; gap: 4rem; align-items: start; }
@media (max-width: 900px) { .l-single__inner { grid-template-columns: 1fr; } }

/* Entry Header */
.c-entry-header { margin-bottom: calc(var(--spacing)*2); }
.c-entry-header__meta {
    display: flex; flex-wrap: wrap; gap: 1rem;
    font-size: 0.82rem; opacity: 0.72;
    margin-bottom: 1rem; align-items: center;
}
.c-entry-header__title {
    font-size: var(--h1-font-size);
    font-weight: 700; color: var(--text-bold);
    line-height: 1.4; margin: 0 0 calc(var(--spacing)*1.5);
    border-left: 5px solid var(--h1-accent-color);
    padding-left: 1rem;
}

/* Reading Time */
.c-reading-time { display: inline-flex; align-items: center; gap: 0.3rem; }
.c-reading-time svg { flex-shrink: 0; }

/* Eyecatch */
.c-entry-header__eyecatch {
    width: 100%; aspect-ratio: 21/9; object-fit: cover;
    border-radius: var(--eyecatch-radius);
    margin-bottom: calc(var(--spacing)*2);
}

/* TL;DR */
.c-tldr {
    background: var(--bg-tldr);
    border-radius: 8px;
    padding: calc(var(--spacing)*1.5);
    margin-bottom: calc(var(--spacing)*2);
    border-left: 3px solid var(--accent-secondary);
}
.c-tldr__title {
    color: var(--accent-secondary); font-weight: 700; font-size: 1rem;
    display: flex; align-items: center; gap: 0.5rem;
    margin: 0 0 1rem;
}
.c-tldr__list { margin: 0; padding-left: 1.8rem; font-weight: 700; }
.c-tldr__item { margin-bottom: 0.5rem; }
.c-tldr__item:last-child { margin-bottom: 0; }

/* Entry Content */
.c-entry-content { margin-bottom: calc(var(--spacing)*3); line-height: 2; }

.c-entry-content h2 {
    font-size: var(--h2-font-size); font-weight: 700; color: var(--text-bold);
    margin-top: calc(var(--spacing)*3); margin-bottom: calc(var(--spacing)*1.2);
    padding-left: 1rem;
    border-left: 4px solid var(--h2-accent-color);
}
.c-entry-content h3 {
    font-weight: 700; color: var(--text-bold); font-size: 1.2rem;
    margin-top: calc(var(--spacing)*2); margin-bottom: var(--spacing);
    padding-bottom: 0.4rem; border-bottom: 1px dotted var(--border-subtle);
}
.c-entry-content h4 { font-weight: 700; color: var(--text-bold); font-size: 1.05rem; margin-top: calc(var(--spacing)*1.5); margin-bottom: 0.5rem; }
.c-entry-content p { margin-bottom: calc(var(--spacing)*1.2); }
.c-entry-content strong { color: var(--text-bold); }
.c-entry-content ul, .c-entry-content ol { padding-left: 2rem; margin-bottom: calc(var(--spacing)*1.5); }
.c-entry-content li { margin-bottom: 0.5rem; }
.c-entry-content blockquote {
    border-left: 4px solid var(--border-subtle);
    padding: 1rem 1.5rem; margin: calc(var(--spacing)*2) 0;
    background: rgba(211,211,211,0.1);
    border-radius: 0 8px 8px 0; font-style: italic; opacity: 0.9;
}
.c-entry-content blockquote p { margin-bottom: 0; }
.c-entry-content img { border-radius: var(--eyecatch-radius); margin: calc(var(--spacing)*1.5) auto; }
.c-entry-content table { width: 100%; border-collapse: collapse; margin: calc(var(--spacing)*1.5) 0; font-size: 0.9rem; }
.c-entry-content th, .c-entry-content td { border: 1px solid var(--border-subtle); padding: 0.8rem 1rem; text-align: left; }
.c-entry-content th { background: rgba(211,211,211,0.2); font-weight: 700; }

/* =========================================================
   Author Card
   ========================================================= */
.c-author-card {
    border: 1px solid var(--border-subtle); border-radius: 12px;
    padding: calc(var(--spacing)*2); margin: calc(var(--spacing)*3) 0;
    display: flex; gap: var(--spacing); align-items: flex-start;
}
@media (max-width: 600px) { .c-author-card { flex-direction: column; align-items: center; text-align: center; } }

.c-author-card__avatar {
    width: 80px; height: 80px; border-radius: 50%;
    object-fit: cover; flex-shrink: 0;
}
.c-author-card__avatar-placeholder {
    width: 80px; height: 80px; border-radius: 50%; flex-shrink: 0;
    background: var(--accent-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; font-weight: 700; color: var(--bg-base);
}
.c-author-card__name { font-weight: 700; font-size: 1.1rem; color: var(--text-bold); margin: 0 0 0.4rem; }
.c-author-card__bio { font-size: 0.9rem; margin: 0 0 0.8rem; opacity: 0.9; }
.c-author-card__sns { display: flex; flex-wrap: wrap; gap: 0.6rem; list-style: none; padding: 0; margin: 0; }
.c-author-card__sns a {
    font-size: 0.78rem; font-weight: 700; color: var(--text-main); opacity: 0.7;
    padding: 3px 10px; border: 1px solid var(--border-subtle);
    border-radius: 20px; transition: 0.3s;
}
.c-author-card__sns a:hover { opacity: 1; border-color: var(--accent-primary); color: var(--accent-primary); }

/* =========================================================
   Article Bottom CTA
   ========================================================= */
.c-article-cta {
    background: var(--text-bold); color: var(--bg-base);
    border-radius: 12px; padding: calc(var(--spacing)*2.5);
    margin: calc(var(--spacing)*3) 0; text-align: center;
    background-size: cover; background-position: center;
    position: relative; overflow: hidden;
}
.c-article-cta::before {
    content: ''; position: absolute; inset: 0;
    background: rgba(28,28,28,0.76); z-index: 0;
}
.c-article-cta > * { position: relative; z-index: 1; }
.c-article-cta__title { font-size: 1.3rem; font-weight: 700; margin: 0 0 0.8rem; color: #fff; }
.c-article-cta__desc { font-size: 0.9rem; opacity: 0.88; margin: 0 0 1.5rem; color: #fff; }
.c-article-cta__btn {
    display: inline-block; background: var(--accent-primary); color: #fff !important;
    padding: 0.85rem 2.5rem; border-radius: 50px;
    font-weight: 700; font-size: 1rem; transition: 0.3s; opacity: 1 !important;
}
.c-article-cta__btn:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(233,84,107,0.4); opacity: 1; }

/* =========================================================
   Sidebar
   ========================================================= */
.l-sidebar { position: sticky; top: 130px; height: fit-content; }
@media (max-width: 900px) { .l-sidebar { display: none; } }

.c-sidebar-widget { margin-bottom: 3rem; }
.c-sidebar-widget__title {
    font-size: 0.82rem; font-weight: 700; letter-spacing: 0.12em;
    border-bottom: 2px solid var(--accent-secondary);
    padding-bottom: 0.5rem; margin-bottom: 1.2rem; color: var(--text-bold);
}
.c-widget-list { list-style: none; padding: 0; margin: 0; font-size: 0.85rem; }
.c-widget-list li { margin-bottom: 0.8rem; border-bottom: 1px dotted var(--border-subtle); padding-bottom: 0.4rem; }
.c-widget-list a { font-weight: 700; opacity: 0.8; transition: var(--transition-interact); display: block; }
.c-widget-list a:hover { opacity: 1; color: var(--accent-primary); transform: translateX(3px); }

/* Profile Card */
.c-profile-card { text-align: center; }
.c-profile-card__avatar-wrap {
    width: 70px; height: 70px; border-radius: 50%;
    margin: 0 auto 0.8rem; overflow: hidden;
    background: var(--accent-primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.8rem; font-weight: 700; color: var(--bg-base);
}
.c-profile-card__avatar-wrap img { width: 70px; height: 70px; object-fit: cover; border-radius: 50%; }
.c-profile-card__name { font-weight: 700; font-size: 1rem; margin: 0 0 0.4rem; color: var(--text-bold); }
.c-profile-card__bio { font-size: 0.82rem; opacity: 0.85; margin: 0 0 0.8rem; }
.c-profile-card__sns { display: flex; flex-wrap: wrap; gap: 0.4rem; justify-content: center; list-style: none; padding: 0; margin: 0; }
.c-profile-card__sns a {
    font-size: 0.72rem; font-weight: 700; color: var(--text-main); opacity: 0.7;
    padding: 2px 8px; border: 1px solid var(--border-subtle); border-radius: 20px; transition: 0.3s;
}
.c-profile-card__sns a:hover { opacity: 1; border-color: var(--accent-primary); color: var(--accent-primary); }

/* =========================================================
   Page Templates
   ========================================================= */
.l-page {
    padding-top: 150px; padding-bottom: 80px;
    max-width: var(--content-width); margin: 0 auto;
    padding-left: var(--spacing); padding-right: var(--spacing);
}
.has-announce .l-page { padding-top: 172px; }

.l-page__eyecatch {
    width: 100%; aspect-ratio: 21/9; object-fit: cover;
    border-radius: var(--eyecatch-radius);
    margin-bottom: calc(var(--spacing)*2);
}
.l-page__title {
    font-size: clamp(1.6rem,4vw,2.2rem); font-weight: 700;
    color: var(--text-bold); line-height: 1.4;
    margin: 0 0 calc(var(--spacing)*2);
    padding-bottom: var(--spacing);
    border-bottom: 2px solid var(--border-subtle);
}
.l-page__content { line-height: 2; }
.l-page__content h2 {
    font-size: var(--h2-font-size); font-weight: 700; color: var(--text-bold);
    margin-top: calc(var(--spacing)*3); margin-bottom: calc(var(--spacing)*1.2);
    padding-left: 1rem; border-left: 4px solid var(--h2-accent-color);
}
.l-page__content h3 {
    font-weight: 700; color: var(--text-bold); font-size: 1.15rem;
    margin-top: calc(var(--spacing)*2); margin-bottom: var(--spacing);
    padding-bottom: 0.4rem; border-bottom: 1px dotted var(--border-subtle);
}
.l-page__content h4 { font-weight: 700; color: var(--text-bold); font-size: 1.05rem; margin-top: calc(var(--spacing)*1.5); margin-bottom: 0.5rem; }
.l-page__content p { margin-bottom: calc(var(--spacing)*1.2); }
.l-page__content strong { color: var(--text-bold); }
.l-page__content ul, .l-page__content ol { padding-left: 2rem; margin-bottom: calc(var(--spacing)*1.5); }
.l-page__content li { margin-bottom: 0.5rem; }
.l-page__content blockquote {
    border-left: 4px solid var(--border-subtle); padding: 1rem 1.5rem;
    margin: calc(var(--spacing)*2) 0; background: rgba(211,211,211,0.1);
    border-radius: 0 8px 8px 0; font-style: italic;
}
.l-page__content blockquote p { margin-bottom: 0; }
.l-page__content img { border-radius: var(--eyecatch-radius); margin: calc(var(--spacing)*1.5) auto; }
.l-page__content table { width: 100%; border-collapse: collapse; margin: calc(var(--spacing)*1.5) 0; font-size: 0.9rem; }
.l-page__content th, .l-page__content td { border: 1px solid var(--border-subtle); padding: 0.8rem 1rem; }
.l-page__content th { background: rgba(211,211,211,0.2); font-weight: 700; }

/* Full-width page */
.l-page--fullwidth {
    padding-top: 150px; padding-bottom: 80px; max-width: 100%;
}
.has-announce .l-page--fullwidth { padding-top: 172px; }

/* =========================================================
   Footer
   ========================================================= */
.l-footer { background: var(--text-bold); color: var(--bg-base); padding: 5rem 0 2rem; margin-top: 5rem; }
.l-footer__inner { display: grid; grid-template-columns: 1.5fr 1fr; gap: 4rem; margin-bottom: 4rem; }
@media (max-width: 768px) { .l-footer__inner { grid-template-columns: 1fr; gap: 3rem; } }
.l-footer__logo { font-size: 1.4rem; font-weight: 700; margin-bottom: 1.2rem; letter-spacing: 0.08em; }
.l-footer__logo img { height: 36px; width: auto; filter: brightness(0) invert(1); }
.l-footer__description { font-size: 0.88rem; opacity: 0.8; line-height: 1.8; max-width: 400px; }
.c-footer-sns { margin-top: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; }
.c-footer-sns a { color: inherit; font-weight: 700; font-size: 0.82rem; opacity: 0.75; transition: var(--transition-interact); }
.c-footer-sns a:hover { opacity: 1; color: var(--accent-secondary); }
.l-footer__nav { display: flex; gap: 3rem; flex-wrap: wrap; }
.l-footer__nav-title { font-size: 0.8rem; color: var(--accent-secondary); margin-bottom: 1.2rem; letter-spacing: 0.1em; }
.l-footer__nav-group ul { list-style: none; padding: 0; margin: 0; }
.l-footer__nav-group li { margin-bottom: 0.7rem; }
.l-footer__nav-group a { color: inherit; font-size: 0.88rem; opacity: 0.7; transition: var(--transition-interact); }
.l-footer__nav-group a:hover { opacity: 1; color: var(--accent-secondary); }
.l-footer__bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 1.5rem; text-align: center; font-size: 0.75rem; opacity: 0.5; }

/* =========================================================
   Reveal Animation
   ========================================================= */
.js-reveal { opacity: 0; transform: translateY(15px); transition: opacity 0.7s ease-out, transform 0.7s ease-out; }
.js-reveal.is-active { opacity: 1; transform: translateY(0); }

/* =========================================================
   Archive / Search Headers
   ========================================================= */
.c-archive-header {
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-subtle);
}
.c-archive-header__label { font-size: 0.75rem; font-weight: 700; color: var(--accent-secondary); letter-spacing: 0.1em; margin: 0 0 0.5rem; }
.c-archive-header__title { font-size: clamp(1.4rem,3vw,1.8rem); font-weight: 700; color: var(--text-bold); margin: 0; }
.c-archive-header__count { font-size: 0.82rem; opacity: 0.65; margin-top: 0.5rem; }

/* =========================================================
   404 / Empty State
   ========================================================= */
.c-404 { text-align: center; padding: 5rem var(--spacing); }
.c-404__title { font-size: clamp(4rem,15vw,8rem); font-weight: 700; color: var(--border-subtle); line-height: 1; margin: 0 0 1rem; }
.c-404__message { font-size: 1.2rem; color: var(--text-bold); font-weight: 700; margin: 0 0 0.8rem; }
.c-404__sub { font-size: 0.9rem; opacity: 0.7; margin: 0 0 2.5rem; }
.c-404__btn {
    display: inline-block; background: var(--accent-primary); color: #fff !important;
    padding: 0.85rem 2.5rem; border-radius: 50px; font-weight: 700; opacity: 1 !important;
}
.c-404__btn:hover { opacity: 0.85 !important; }

/* =========================================================
   Utility / WordPress Core
   ========================================================= */
.screen-reader-text {
    position: absolute !important; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.wp-caption { max-width: 100%; }
.wp-caption-text { font-size: 0.8rem; opacity: 0.65; text-align: center; margin-top: 0.4rem; }
.alignleft { float: left; margin: 0 1.5rem 1rem 0; }
.alignright { float: right; margin: 0 0 1rem 1.5rem; }
.aligncenter { display: block; margin: 0 auto 1rem; }

/* =========================================================
   SNS Share Block
   ========================================================= */
.c-share {
    margin: calc(var(--spacing) * 2.5) 0;
    /* コンテナ端から離れるよう記事本文と同じ水平余白を確保 */
    padding: calc(var(--spacing) * 1.2) calc(var(--spacing) * 1.5);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
}

.c-share__label {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--text-bold);
    opacity: 0.5;
    margin: 0 0 0.9rem;
    text-transform: uppercase;
}

/* ---- PC（769px〜）: flex 折り返し ---- */
.c-share__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

/* ---- ボタン共通（PC基準） ---- */
.c-share__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    height: 44px;           /* タップターゲット最低サイズ */
    padding: 0 1.1rem;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    background: transparent;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
    -webkit-tap-highlight-color: transparent;
    opacity: 1;
    /* ボタンが親に引き伸ばされないよう flex-shrink / grow を明示 */
    flex-shrink: 0;
    flex-grow: 0;
    transition:
        border-color 0.25s ease,
        color        0.25s ease,
        background   0.25s ease,
        box-shadow   0.25s ease,
        transform    0.2s  ease;
}

/* ホバー：--cat-color がふわっと浮かび上がる */
.c-share__btn:hover {
    border-color: var(--cat-color, var(--accent-primary));
    color:        var(--cat-color, var(--accent-primary));
    background:   color-mix(in srgb, var(--cat-color, var(--accent-primary)) 6%, transparent);
    box-shadow:   0 4px 14px color-mix(in srgb, var(--cat-color, var(--accent-primary)) 20%, transparent);
    transform: translateY(-2px);
    opacity: 1;
}
@supports not (color: color-mix(in srgb, red 10%, transparent)) {
    .c-share__btn:hover {
        background: rgba(233, 84, 107, 0.06);
        box-shadow: 0 4px 14px rgba(233, 84, 107, 0.15);
    }
}
.c-share__btn:active { transform: translateY(0); }

/* アイコン */
.c-share__icon {
    width: 18px; height: 18px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.c-share__icon svg { width: 18px; height: 18px; }

/* コピー完了状態 */
.c-share__btn--copy.is-copied {
    border-color: #5D9450;
    color:        #5D9450;
    background:   rgba(93, 148, 80, 0.06);
}

/* ============================================================
   スマホ（768px 以下）
   → 5個を均等横並び・アイコンのみ・高さ44px固定
   ============================================================ */
@media (max-width: 768px) {
    .c-share {
        /* 記事本文と同じ水平パディングを維持 */
        padding: 1rem var(--spacing);
    }

    .c-share__list {
        display: flex;
        flex-wrap: nowrap;          /* 1行で並べる */
        gap: 10px;
        justify-content: space-between;
    }

    .c-share__item {
        flex: 1;                    /* 均等に伸張 */
        min-width: 0;               /* overflow 防止 */
    }

    .c-share__btn {
        width: 100%;                /* アイテム幅いっぱい */
        height: 44px;
        padding: 0;                 /* テキスト非表示なので不要 */
        border-radius: 10px;
        flex-grow: 1;
        flex-shrink: 1;
    }

    /* テキストラベルをスマホで非表示（アイコンのみ） */
    .c-share__text {
        display: none;
    }

    /* アイコンをやや大きく */
    .c-share__icon        { width: 20px; height: 20px; }
    .c-share__icon svg    { width: 20px; height: 20px; }

    /* ホバー時の上移動をスマホで無効（タップに不要） */
    .c-share__btn:hover { transform: none; }
}

/* 極小画面（360px以下）でも崩れない保険 */
@media (max-width: 360px) {
    .c-share__list { gap: 6px; }
    .c-share__icon        { width: 18px; height: 18px; }
    .c-share__icon svg    { width: 18px; height: 18px; }
}

/* =========================================================
   広告ブロック（AdSense）
   ========================================================= */
.c-ad-block {
    margin: calc(var(--spacing) * 2) 0;
    text-align: center;
    overflow: hidden;   /* 広告が親からはみ出るのを防ぐ */
}

/* 「スポンサーリンク」ラベル */
.c-ad-label {
    font-size: 0.68rem;
    color: var(--text-main);
    opacity: 0.45;
    letter-spacing: 0.08em;
    margin: 0 0 0.3rem;
    text-align: left;
}

/* 広告コンテナ内の全要素の幅を親に収める */
.c-ad-block ins,
.c-ad-block iframe,
.c-ad-block img {
    max-width: 100% !important;
    width: auto !important;
}

/* サイドバー内広告（追尾サイドバー対応） */
.c-ad-block--sidebar {
    position: sticky;
    top: 130px;
}

/* =========================================================
   SNS 埋め込みウィジェット
   ========================================================= */
.c-sns-embed {
    overflow: hidden;   /* 埋め込みコンテンツの突き抜け防止 */
    max-width: 100%;
}

/* Twitter/X タイムライン・Instagram 埋め込みの幅制御 */
.c-sns-embed iframe,
.c-sns-embed blockquote,
.c-sns-embed twitter-widget,
.c-sns-embed .twitter-timeline {
    max-width: 100% !important;
    min-width: 0 !important;
    width: 100% !important;
}

/* フッターの SNS 埋め込みはスマホで縦並び */
@media (max-width: 768px) {
    .l-footer .c-sns-embed {
        margin-top: 1.5rem;
    }
}

/* =========================================================
   Toast 通知
   ========================================================= */
.c-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(1rem);
    background: var(--text-bold);
    color: var(--bg-base);
    padding: 0.65rem 1.4rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    z-index: 9999;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
}
.c-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}