/*
Theme Name: Engineer Lab
Theme URI: https://shindan.biz/
Author: エンジニア転職ラボ
Description: 記事一覧・ランキング・カテゴリ索引を備えたメディア型WordPressテーマ。淡いグレーの地に白いカードを並べ、ライムグリーンをアクセントに使う。装飾はすべてインラインCSSで完結する。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 7.1
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: engineer-lab
Tags: blog, news, two-columns, custom-menu, featured-images
*/

:root{
  --accent:#94ff00;
  --accent-deep:#5faa00;
  --accent-soft:#f6f8f5;
  --ink:#121212;
  --ink-sub:#707070;
  --ink-mute:#9e9e9e;
  --line:#dedede;
  --line-soft:#ececec;
  --bg:#f3f3f3;
  --card:#fff;
  --orange:#ff9802;
  --orange-soft:#fdf0dd;
  --radius:10px;
  --radius-lg:16px;
  --inner:1180px;
  --font-ja:"Noto Sans JP","Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif;
  --font-en:"Mulish","Noto Sans JP",sans-serif;
  --shadow:0 1px 4px rgba(0,0,0,.06);
  --shadow-h:0 6px 18px rgba(0,0,0,.1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-ja);font-size:16px;line-height:1.9;color:var(--ink);background:var(--bg);overflow-x:hidden}
img{max-width:100%;height:auto;vertical-align:bottom}
a{color:inherit;text-decoration:none;transition:opacity .2s,color .2s}
a:hover{opacity:.8}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure{margin:0}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.el-inner{max-width:var(--inner);margin:0 auto;padding:0 20px}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* ---------- ヘッダー ---------- */
.el-header{background:var(--card);border-bottom:1px solid var(--line)}
.el-header__inner{max-width:var(--inner);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:24px;height:76px}
.el-logo{flex-shrink:0}
.el-logo img{max-height:46px;width:auto}
.el-logo__name{font-size:23px;font-weight:800;letter-spacing:.01em;line-height:1.25;color:var(--ink);display:block}
.el-logo__sub{display:block;font-size:11px;color:var(--ink-mute);font-weight:500;margin-top:2px}
.el-nav{margin-left:auto;display:flex;align-items:center;gap:30px}
.el-nav__link{font-size:14.5px;font-weight:700;white-space:nowrap;padding:6px 0;position:relative}
.el-nav__link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--accent);transform:scaleX(0);transition:transform .2s}
.el-nav__link:hover::after{transform:scaleX(1)}
.el-burger{display:none;margin-left:auto;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.el-burger span{display:block;width:20px;height:2px;background:var(--ink);transition:transform .2s,opacity .2s}
.el-burger[aria-expanded=true] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.el-burger[aria-expanded=true] span:nth-child(2){opacity:0}
.el-burger[aria-expanded=true] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- ヒーロー（斜めストライプのカード） ---------- */
.el-hero{padding:26px 0 8px}
.el-hero__card{background:var(--card);border-radius:var(--radius-lg);padding:34px 40px 38px;position:relative;overflow:hidden}
.el-hero__card::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,rgba(148,255,0,.09) 0 10px,transparent 10px 26px);pointer-events:none}
.el-hero__small{position:relative;font-size:15px;font-weight:700;color:var(--ink-sub);margin-bottom:6px}
.el-hero__title{position:relative;font-size:30px;font-weight:800;line-height:1.5;letter-spacing:.01em}
.el-hero__title em{font-style:normal;background:linear-gradient(transparent 62%,var(--accent) 62%);padding:0 2px}
.el-hero__search{position:relative;display:flex;margin-top:22px;max-width:640px}
.el-hero__search button{width:56px;background:var(--accent);color:var(--ink);border-radius:6px 0 0 6px;display:flex;align-items:center;justify-content:center;font-size:19px;font-weight:700;flex-shrink:0}
.el-hero__search input{flex:1;border:1px solid var(--line);border-left:none;border-radius:0 6px 6px 0;padding:14px 18px;font-size:14.5px;font-family:inherit;outline:none;background:var(--card)}

/* ---------- レイアウト ---------- */
.el-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:32px;align-items:start;padding:24px 0 64px}

/* ---------- パネル（白いカード） ---------- */
.el-panel{background:var(--card);border-radius:var(--radius-lg);padding:28px 30px 32px;margin-bottom:24px}
.el-panelHead{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.el-badge{background:var(--accent);color:var(--ink);font-family:var(--font-en);font-size:11px;font-weight:800;border-radius:4px;padding:3px 8px;letter-spacing:.06em}
.el-panelHead__title{font-size:21px;font-weight:800;letter-spacing:.01em}
.el-panelHead__desc{font-size:13.5px;color:var(--ink-sub);margin-bottom:22px;line-height:1.9}

/* タブ風の見出し */
.el-tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:22px}
.el-tabs__item{padding:12px 30px;font-size:16px;font-weight:800;color:var(--ink-mute);position:relative}
.el-tabs__item.is-active{color:var(--ink)}
.el-tabs__item.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:var(--accent)}

/* ---------- 記事カード ---------- */
.el-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.el-grid--2{grid-template-columns:repeat(2,1fr)}
.el-card{display:block;background:var(--card);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;transition:box-shadow .2s,transform .2s}
.el-card:hover{box-shadow:var(--shadow-h);transform:translateY(-2px)}
.el-card__thumb{display:block;position:relative;width:100%;padding-top:56.25%;overflow:hidden;background:var(--accent-soft)}
.el-card__thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.el-card__new{position:absolute;top:0;left:0;z-index:2;background:var(--accent);color:var(--ink);font-family:var(--font-en);font-size:10px;font-weight:800;padding:3px 10px;letter-spacing:.06em}
.el-card__body{display:block;padding:14px 16px 18px}
.el-card__tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.el-card__tag{background:var(--accent-soft);color:var(--accent-deep);border:1px solid var(--accent);font-size:10.5px;font-weight:700;border-radius:20px;padding:2px 10px}
.el-card__title{display:block;font-size:15px;font-weight:700;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.el-card:hover .el-card__title{color:var(--accent-deep)}
.el-card__excerpt{display:block;font-size:12.5px;color:var(--ink-sub);line-height:1.8;margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.el-card__date{display:block;font-size:11px;color:var(--ink-mute);text-align:right;margin-top:10px}

.el-more{display:flex;justify-content:center;margin-top:28px}
.el-btn{display:inline-flex;align-items:center;gap:10px;background:var(--accent);color:var(--ink);border-radius:30px;padding:13px 36px;font-size:15px;font-weight:800}
.el-btn:hover{opacity:.85}
.el-btn--ghost{background:var(--card);border:2px solid var(--accent);color:var(--ink)}

/* ---------- サイドバー ---------- */
.el-side{display:flex;flex-direction:column;gap:22px;position:sticky;top:16px}
.el-side__box{background:var(--card);border-radius:var(--radius-lg);padding:22px 20px}
.el-side__title{font-size:17px;font-weight:800;margin-bottom:16px}
.el-rank{counter-reset:rank}
.el-rank__item{display:flex;gap:12px;padding:12px 0;position:relative}
.el-rank__item+.el-rank__item{border-top:1px solid var(--line-soft)}
.el-rank__num{position:absolute;left:0;top:10px;width:22px;height:22px;border-radius:4px;background:var(--ink);color:var(--accent);font-family:var(--font-en);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;z-index:2}
.el-rank__item--top .el-rank__num{background:var(--accent);color:var(--ink)}
.el-rank__item{padding-left:30px}
.el-rank__thumb{display:block;position:relative;width:78px;height:52px;border-radius:5px;overflow:hidden;flex-shrink:0;background:var(--accent-soft)}
.el-rank__thumb img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.el-rank__thumb .el-thumbPlaceholder{font-size:10px!important;padding:5px!important;line-height:1.4!important}
.el-rank__title{display:block;font-size:12.5px;font-weight:700;line-height:1.6;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.el-rank__item:hover .el-rank__title{color:var(--accent-deep)}
.el-catlist li{border-bottom:1px solid var(--line-soft)}
.el-catlist a{display:flex;align-items:center;justify-content:space-between;padding:11px 0;font-size:14px;font-weight:600}
.el-catlist a:hover{color:var(--accent-deep)}
.el-catlist a span{color:var(--ink-mute);font-size:12px;font-family:var(--font-en)}

/* ---------- ページ見出し ---------- */
.el-pageHead{background:var(--card);padding:30px 0;border-bottom:1px solid var(--line)}
.el-pageHead__en{font-family:var(--font-en);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-deep);font-weight:800}
.el-pageHead__title{font-size:27px;font-weight:800;line-height:1.5}
.el-pageHead__desc{font-size:13.5px;color:var(--ink-sub);margin-top:8px}

/* ---------- ページャー ---------- */
.el-pager{display:flex;justify-content:center;align-items:center;gap:8px;margin-top:34px;flex-wrap:wrap}
.el-pager .page-numbers{display:flex;align-items:center;justify-content:center;min-width:38px;height:38px;padding:0 12px;border-radius:6px;font-size:14px;font-weight:700;color:var(--ink-sub);border:1px solid var(--line);background:var(--card)}
.el-pager .page-numbers.current{background:var(--accent);color:var(--ink);border-color:var(--accent)}
.el-pager .page-numbers:hover{border-color:var(--accent)}

/* ---------- 記事詳細 ---------- */
.el-breadcrumb{font-size:12px;color:var(--ink-mute);padding:14px 0}
.el-breadcrumb a:hover{color:var(--accent-deep)}
.el-breadcrumb span+span::before{content:"›";margin:0 8px;color:var(--line)}
.el-article{background:var(--card);border-radius:var(--radius-lg);padding:34px 40px 40px}
.el-article__head{margin-bottom:20px}
.el-article__meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.el-article__cat{background:var(--accent);color:var(--ink);font-size:11.5px;font-weight:800;border-radius:20px;padding:4px 14px}
.el-article__date{font-size:12px;color:var(--ink-mute)}
.el-article__title{font-size:29px;font-weight:800;line-height:1.55}
.el-article__thumb{margin:22px 0;border-radius:var(--radius);overflow:hidden}
.el-entry{font-size:16px;line-height:2}
.el-entry>*+*{margin-top:1.6em}
.el-entry h2{font-size:23px;line-height:1.6;font-weight:800;margin-top:2.4em;padding:12px 0 12px 18px;border-left:6px solid var(--accent);background:var(--accent-soft);border-radius:0 6px 6px 0;scroll-margin-top:80px}
.el-entry h3{font-size:19px;line-height:1.6;font-weight:800;margin-top:2em;padding-bottom:9px;border-bottom:2px solid var(--line);scroll-margin-top:80px}
.el-entry h4{font-size:17px;font-weight:700;margin-top:1.8em}
.el-entry p{margin-top:1.4em}
.el-entry a{color:var(--accent-deep);text-decoration:underline}
.el-entry ul,.el-entry ol{background:var(--accent-soft);border-radius:8px;padding:20px 24px 20px 42px}
.el-entry ul li{list-style:disc}
.el-entry ol li{list-style:decimal}
.el-entry li+li{margin-top:8px}
.el-entry img{border-radius:8px}
.el-entry blockquote{border-left:4px solid var(--line);background:var(--bg);padding:16px 22px;border-radius:0 8px 8px 0;color:var(--ink-sub)}
.el-entry table{width:100%;border-collapse:collapse;font-size:15px}
.el-entry table th,.el-entry table td{border:1px solid var(--line);padding:12px 14px;text-align:left}
.el-entry table th{background:var(--ink);color:var(--accent);font-weight:700}
.el-entry .el-tablewrap{overflow-x:auto}

/* 目次 */
.el-toc{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;margin:30px 0}
.el-toc__head{display:flex;align-items:center;justify-content:space-between;font-weight:800;font-size:15px}
.el-toc__toggle{font-size:12px;color:var(--accent-deep);font-weight:700}
/* 目次。本文用の ol スタイル（背景・decimal）を打ち消してから組み立てる */
.el-toc ol,.el-entry .el-toc ol{counter-reset:toc;margin-top:14px;background:none;padding:0;border:none;list-style:none}
.el-toc li,.el-entry .el-toc li{list-style:none;margin:0;font-size:14px;line-height:1.9;padding-left:34px;position:relative}
.el-toc li+li{margin-top:2px}
.el-toc li:not(.el-toc__h3){counter-increment:toc;font-weight:700}
.el-toc li:not(.el-toc__h3)::before{content:counter(toc);position:absolute;left:0;top:6px;width:22px;height:22px;border-radius:4px;background:var(--ink);color:var(--accent);font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:800}
.el-toc .el-toc__h3{padding-left:56px;font-size:13px;font-weight:400;color:var(--ink-sub)}
.el-toc .el-toc__h3::before{content:"";position:absolute;left:34px;top:14px;width:12px;height:1px;background:var(--line)}
.el-toc[data-open=false] ol{display:none}

.el-share{display:flex;align-items:center;gap:10px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line-soft)}
.el-share__label{font-size:12px;font-weight:700;color:var(--ink-sub)}
.el-share a,.el-share button{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--ink-sub)}
.el-share a:hover,.el-share button:hover{background:var(--accent);border-color:var(--accent);color:var(--ink)}

.el-page{padding:24px 0 64px}
.el-page__title{font-size:27px;font-weight:800;line-height:1.5;margin-bottom:22px}
.el-empty{text-align:center;padding:64px 20px}
.el-empty__title{font-size:21px;font-weight:800;margin-bottom:10px}
.el-empty__desc{color:var(--ink-sub);font-size:14px}

/* ---------- フッター ---------- */
.el-footer{background:var(--ink);color:#fff;padding:44px 0 22px}
.el-footer__top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.14)}
.el-footer__brand{max-width:360px}
.el-footer__desc{font-size:12.5px;line-height:1.95;color:rgba(255,255,255,.7);margin-top:12px}
.el-footer__nav{display:flex;gap:48px;flex-wrap:wrap}
.el-footer__navTitle{font-family:var(--font-en);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:12px;font-weight:800}
.el-footer__nav li{margin-bottom:9px}
.el-footer__nav a{font-size:13px;color:rgba(255,255,255,.82)}
.el-footer__nav a:hover{color:#fff}
.el-footer__bar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:18px}
.el-footer__copy{font-size:11.5px;color:rgba(255,255,255,.55);font-family:var(--font-en)}

/* ---------- レスポンシブ ---------- */
@media (max-width:1024px){
  .el-layout{grid-template-columns:1fr;gap:28px}
  .el-side{position:static}
  .el-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:767px){
  body{font-size:15px}
  .el-header__inner{height:62px;gap:12px}
  .el-nav{display:none}
  .el-burger{display:flex}
  .el-header{position:relative}
  .el-nav.is-open{display:flex;position:absolute;left:0;right:0;top:62px;z-index:60;background:var(--card);flex-direction:column;align-items:stretch;gap:0;padding:6px 20px 14px;box-shadow:var(--shadow-h)}
  .el-nav.is-open .el-nav__link{padding:13px 0;border-bottom:1px solid var(--line-soft)}
  .el-logo__name{font-size:18px}
  .el-hero__card{padding:22px 20px 26px;border-radius:12px}
  .el-hero__title{font-size:20px}
  .el-panel{padding:20px 18px 24px;border-radius:12px}
  .el-grid{grid-template-columns:1fr}
  .el-tabs__item{padding:11px 18px;font-size:14.5px}
  .el-article{padding:22px 18px 28px;border-radius:12px}
  .el-article__title{font-size:22px}
  .el-entry h2{font-size:19px;padding:11px 0 11px 14px}
  .el-entry h3{font-size:17px}
  .el-footer__top{flex-direction:column;gap:26px}
}