/*
Theme Name: 投資ラボ
Theme URI: https://toushi-labo.jp
Author: toushi-labo
Description: 投資・資産運用メディア「投資ラボ」オリジナルテーマ
Version: 1.0.0
Text Domain: toushi-labo
*/

/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root {
  --c-primary: #0F2D5E;
  --c-primary-light: #1a3f7a;
  --c-accent: #2E7DD1;
  --c-accent-light: #4a9ae6;
  --c-success: #10b981;
  --c-warning: #f59e0b;
  --grad: linear-gradient(135deg, #0F2D5E, #2E7DD1);
  --grad-accent: linear-gradient(135deg, #2E7DD1, #4a9ae6);
  --bg: #ffffff;
  --bg-card: #f8fafc;
  --bg-sidebar: #f1f5f9;
  --bg-hero: #0F2D5E;
  --text: #1e293b;
  --text-sub: #64748b;
  --text-white: #ffffff;
  --border: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
  --shadow-lg: 0 4px 20px rgba(0,0,0,.1);
  --header-h: 68px;
  --content-w: 1180px;
  --transition: .25s ease;
}

[data-theme="dark"] {
  --c-primary: #4a9ae6;
  --c-primary-light: #2E7DD1;
  --bg: #0c1929;
  --bg-card: #132237;
  --bg-sidebar: #132237;
  --bg-hero: #0a1525;
  --text: #e2e8f0;
  --text-sub: #94a3b8;
  --border: #1e3a5f;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-lg: 0 4px 20px rgba(0,0,0,.3);
}

html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;background:var(--bg);color:var(--text);line-height:1.8;transition:background var(--transition),color var(--transition)}
a{color:var(--c-accent);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--c-accent-light)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}

/* ===== Utility ===== */
.container{max-width:var(--content-w);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:100;background:var(--c-primary);height:var(--header-h);box-shadow:0 2px 12px rgba(15,45,94,.15)}
[data-theme="dark"] .site-header{background:#0a1525;box-shadow:0 2px 12px rgba(0,0,0,.3)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.site-logo{font-size:1.3rem;font-weight:800;color:#fff;letter-spacing:.02em}
.site-logo a{color:#fff}
.site-logo a:hover{color:rgba(255,255,255,.85)}
.site-logo__sub{display:block;font-size:.6rem;font-weight:400;opacity:.7;letter-spacing:.08em;margin-top:-2px}

/* Nav */
.global-nav ul{display:flex;gap:4px}
.global-nav a{color:rgba(255,255,255,.85);font-size:.85rem;font-weight:600;padding:8px 14px;border-radius:6px;position:relative;transition:all var(--transition)}
.global-nav a:hover,.global-nav .current-menu-item a{color:#fff;background:rgba(255,255,255,.1)}

/* Header actions */
.header-actions{display:flex;align-items:center;gap:8px}
.theme-toggle{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:6px 10px;cursor:pointer;color:#fff;font-size:1rem;transition:all var(--transition)}
.theme-toggle:hover{background:rgba(255,255,255,.2)}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}

/* ===== Hero Section ===== */
.hero{background:var(--grad);color:#fff;padding:80px 0 72px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}
.hero .container{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:48px}
.hero__content{max-width:600px}
.hero__label{display:inline-block;font-size:.75rem;font-weight:700;background:rgba(255,255,255,.15);padding:4px 14px;border-radius:20px;margin-bottom:16px;letter-spacing:.05em}
.hero__title{font-size:2.2rem;font-weight:800;line-height:1.35;margin-bottom:16px}
.hero__title span{color:var(--c-accent-light)}
[data-theme="dark"] .hero__title span{color:#7cb8f0}
.hero__desc{font-size:1rem;line-height:1.8;opacity:.9;margin-bottom:28px}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:6px;padding:14px 28px;border-radius:8px;font-size:.9rem;font-weight:700;transition:all var(--transition);border:none;cursor:pointer;text-decoration:none}
.btn-white{background:#fff;color:var(--c-primary)}
[data-theme="dark"] .btn-white{color:#0F2D5E}
.btn-white:hover{background:rgba(255,255,255,.9);color:var(--c-primary);transform:translateY(-1px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.4)}
.btn-outline:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.6)}
.btn-primary{display:inline-flex;padding:14px 32px;background:var(--grad);color:#fff;font-weight:700;border-radius:8px;font-size:.95rem;transition:all var(--transition);border:none;cursor:pointer}
.btn-primary:hover{opacity:.9;color:#fff;transform:translateY(-1px)}
.hero__visual{flex-shrink:0}
.hero__chart{width:280px;height:200px;background:rgba(255,255,255,.08);border-radius:16px;display:flex;align-items:flex-end;justify-content:center;gap:12px;padding:24px}
.hero__bar{width:28px;border-radius:6px 6px 0 0;background:linear-gradient(to top,rgba(255,255,255,.2),rgba(255,255,255,.5))}

/* ===== Stats Bar ===== */
.stats-bar{background:var(--bg-card);border-bottom:1px solid var(--border);padding:20px 0}
.stats-bar .container{display:flex;justify-content:center;gap:48px}
.stat{text-align:center}
.stat__num{font-size:1.6rem;font-weight:800;color:var(--c-accent);display:block}
.stat__label{font-size:.75rem;color:var(--text-sub);font-weight:600}

/* ===== Section ===== */
.section{padding:56px 0}
.section__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.section__title{font-size:1.35rem;font-weight:800;display:flex;align-items:center;gap:10px}
.section__title::before{content:"";width:4px;height:24px;background:var(--grad);border-radius:2px}
.section__more{font-size:.85rem;font-weight:600;color:var(--c-accent)}

/* ===== Category Tabs ===== */
.category-tabs{padding:40px 0 0}
.tab-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.tab-list::-webkit-scrollbar{display:none}
.tab-link{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border-radius:8px;font-size:.85rem;font-weight:600;color:var(--text-sub);background:var(--bg-card);border:1px solid var(--border);white-space:nowrap;transition:all var(--transition)}
.tab-link:hover,.tab-link.is-active{color:#fff;background:var(--grad);border-color:transparent}
.tab-link:hover{color:#fff}

/* ===== Featured Section ===== */
.featured-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.featured-main{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;background:var(--bg-card)}
.featured-main__img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.featured-main__overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(15,45,94,.85) 0%,transparent 60%);display:flex;flex-direction:column;justify-content:flex-end;padding:28px}
.featured-main__cat{display:inline-block;font-size:.7rem;font-weight:700;color:#fff;background:var(--c-accent);padding:3px 12px;border-radius:20px;margin-bottom:8px;width:fit-content}
.featured-main__title{font-size:1.25rem;font-weight:800;color:#fff;line-height:1.45;margin-bottom:8px}
.featured-main__title a{color:#fff}
.featured-main__meta{font-size:.8rem;color:rgba(255,255,255,.7)}

/* Ranking */
.ranking-list{display:flex;flex-direction:column;gap:12px}
.ranking-item{display:flex;gap:14px;align-items:center;padding:14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:all var(--transition)}
.ranking-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-1px)}
.ranking-item__num{flex-shrink:0;width:32px;height:32px;border-radius:50%;background:var(--grad);color:#fff;font-size:.8rem;font-weight:800;display:flex;align-items:center;justify-content:center}
.ranking-item__body{flex:1;min-width:0}
.ranking-item__title{font-size:.9rem;font-weight:700;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ranking-item__title a{color:var(--text)}
.ranking-item__title a:hover{color:var(--c-accent)}
.ranking-item__meta{font-size:.75rem;color:var(--text-sub);margin-top:2px}

/* ===== Post Grid (3 columns) ===== */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:all var(--transition)}
.grid-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.grid-card__thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-sidebar)}
.grid-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.grid-card:hover .grid-card__thumb img{transform:scale(1.04)}
.grid-card__body{padding:18px 20px}
.grid-card__cat{display:inline-block;font-size:.7rem;font-weight:700;color:#fff;background:var(--grad);padding:2px 10px;border-radius:20px;margin-bottom:8px}
.grid-card__title{font-size:.95rem;font-weight:700;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.grid-card__title a{color:var(--text)}
.grid-card__title a:hover{color:var(--c-accent)}
.grid-card__meta{font-size:.78rem;color:var(--text-sub)}

/* ===== CTA Banner ===== */
.cta-banner{background:var(--grad);border-radius:var(--radius);padding:48px 40px;text-align:center;color:#fff;margin:56px 0}
.cta-banner__title{font-size:1.5rem;font-weight:800;margin-bottom:12px}
.cta-banner__desc{font-size:.95rem;opacity:.9;margin-bottom:24px;max-width:600px;margin-left:auto;margin-right:auto}
.cta-banner .btn-white{font-size:.95rem}

/* ===== Archive Cards (List) ===== */
.post-list{display:grid;gap:16px}
.post-card{display:grid;grid-template-columns:200px 1fr;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:box-shadow var(--transition),transform var(--transition)}
.post-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.post-card__thumb{aspect-ratio:16/10;overflow:hidden;background:var(--bg-sidebar)}
.post-card__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.post-card:hover .post-card__thumb img{transform:scale(1.03)}
.post-card__body{padding:18px 22px;display:flex;flex-direction:column;justify-content:center}
.post-card__cat{display:inline-block;font-size:.7rem;font-weight:700;color:#fff;background:var(--grad);padding:2px 10px;border-radius:20px;margin-bottom:6px;width:fit-content}
.post-card__title{font-size:1rem;font-weight:700;line-height:1.5;margin-bottom:6px}
.post-card__title a{color:var(--text)}
.post-card__title a:hover{color:var(--c-accent)}
.post-card__excerpt{font-size:.83rem;color:var(--text-sub);line-height:1.6;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta{font-size:.78rem;color:var(--text-sub)}

/* ===== Main Layout (Archive/Single) ===== */
.site-main{display:grid;grid-template-columns:1fr 300px;gap:32px;padding:40px 0}

/* ===== Single Article ===== */
.article{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.article__header{margin-bottom:32px}
.article__cat{display:inline-block;font-size:.75rem;font-weight:700;color:#fff;background:var(--grad);padding:3px 14px;border-radius:20px;margin-bottom:12px}
.article__title{font-size:1.6rem;font-weight:800;line-height:1.4;margin-bottom:12px}
.article__meta{font-size:.85rem;color:var(--text-sub);display:flex;gap:16px;flex-wrap:wrap}
.article__thumb{margin-bottom:28px;border-radius:var(--radius);overflow:hidden}

/* Article body */
.article__body h2{font-size:1.35rem;font-weight:800;margin:2em 0 .8em;padding:14px 20px;background:var(--bg-sidebar);border-left:4px solid var(--c-accent);border-radius:0 6px 6px 0}
.article__body h3{font-size:1.15rem;font-weight:700;margin:1.5em 0 .6em;padding:10px 14px;background:var(--bg-sidebar);border-radius:6px}
.article__body p{margin-bottom:1.2em}
.article__body ul,.article__body ol{margin:0 0 1.2em 1.5em}
.article__body ul{list-style:disc}
.article__body ol{list-style:decimal}
.article__body li{margin-bottom:.4em}
.article__body strong{color:var(--c-accent);font-weight:700}
.article__body blockquote{border-left:4px solid var(--c-accent);padding:16px 20px;margin:1.5em 0;background:var(--bg-sidebar);border-radius:0 var(--radius) var(--radius) 0;color:var(--text-sub)}
.article__body pre{background:#0f172a;color:#e2e8f0;padding:20px;border-radius:var(--radius);overflow-x:auto;margin-bottom:1.2em;font-size:.875rem}
.article__body code{font-family:"SF Mono",Consolas,monospace;font-size:.9em}
.article__body img{border-radius:var(--radius);margin:1.5em 0}
.article__body .article-image{margin:2em 0;text-align:center}
.article__body .article-image img{width:100%;max-width:780px;margin:0 auto;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.article__body a{text-decoration:underline;text-underline-offset:3px}

/* Intro & Conclusion boxes */
.article__body .intro-box{background:linear-gradient(135deg,rgba(46,125,209,.06),rgba(15,45,94,.04));border:1px solid rgba(46,125,209,.15);border-radius:var(--radius);padding:24px 28px;margin-bottom:2em;font-size:1.02rem;line-height:1.9}
[data-theme="dark"] .article__body .intro-box{background:linear-gradient(135deg,rgba(46,125,209,.1),rgba(15,45,94,.1));border-color:rgba(46,125,209,.25)}
.article__body .conclusion-box{background:var(--bg-sidebar);border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px;margin-top:2em}
.article__body .conclusion-box::before{content:"まとめ";display:block;font-size:.85rem;font-weight:800;color:var(--c-accent);margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--c-accent)}

/* Point & Warning boxes */
.article__body .point-box{position:relative;background:linear-gradient(135deg,rgba(46,125,209,.05),rgba(46,125,209,.02));border:1px solid rgba(46,125,209,.2);border-radius:var(--radius);padding:20px 24px;margin:1.5em 0}
[data-theme="dark"] .article__body .point-box{background:rgba(46,125,209,.08);border-color:rgba(46,125,209,.3)}
.article__body .point-box__label{display:inline-block;background:var(--grad-accent);color:#fff;font-size:.75rem;font-weight:700;padding:2px 12px;border-radius:4px;margin-bottom:10px}
.article__body .warning-box{position:relative;background:rgba(245,158,11,.05);border:1px solid rgba(245,158,11,.25);border-radius:var(--radius);padding:20px 24px;margin:1.5em 0}
[data-theme="dark"] .article__body .warning-box{background:rgba(245,158,11,.08);border-color:rgba(245,158,11,.3)}
.article__body .warning-box__label{display:inline-block;background:#f59e0b;color:#fff;font-size:.75rem;font-weight:700;padding:2px 12px;border-radius:4px;margin-bottom:10px}

/* Styled lists */
.article__body .styled-list{list-style:none;margin:0 0 1.5em 0;padding:0}
.article__body ul.styled-list>li{position:relative;padding:8px 0 8px 28px}
.article__body ul.styled-list>li::before{content:"";position:absolute;left:2px;top:17px;width:8px;height:8px;border-radius:50%;background:var(--grad-accent)}
.article__body ol.styled-list{counter-reset:ol-counter}
.article__body ol.styled-list>li{position:relative;padding:8px 0 8px 36px;counter-increment:ol-counter}
.article__body ol.styled-list>li::before{content:counter(ol-counter);position:absolute;left:0;top:7px;width:24px;height:24px;border-radius:50%;background:var(--grad);color:#fff;font-size:.75rem;font-weight:700;display:flex;align-items:center;justify-content:center}
.article__body .styled-list>li+li{border-top:1px solid var(--border)}

/* ===== Sidebar ===== */
.sidebar{display:flex;flex-direction:column;gap:24px}
.widget{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.widget__title{font-size:.95rem;font-weight:800;margin-bottom:16px;padding-bottom:8px;border-bottom:2px solid var(--c-accent)}
.widget ul{display:flex;flex-direction:column;gap:8px}
.widget li a{color:var(--text);font-size:.875rem;display:flex;align-items:center;gap:6px;padding:6px 0;border-bottom:1px solid var(--border);transition:color var(--transition)}
.widget li a:hover{color:var(--c-accent)}
.widget li a::before{content:"›";color:var(--c-accent);font-weight:700}
.widget li:last-child a{border-bottom:none}

/* ===== Pagination ===== */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:32px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--border);border-radius:8px;font-size:.875rem;font-weight:600;color:var(--text);transition:all var(--transition)}
.pagination a:hover{border-color:var(--c-accent);color:var(--c-accent)}
.pagination .current{background:var(--grad);color:#fff;border-color:transparent}

/* ===== Footer ===== */
.site-footer{background:var(--c-primary);color:rgba(255,255,255,.85);margin-top:0;padding:48px 0 24px}
[data-theme="dark"] .site-footer{background:#0a1525}
.footer-inner{display:grid;grid-template-columns:1fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-brand .site-logo{font-size:1.15rem;margin-bottom:8px}
.footer-brand p{font-size:.8rem;color:rgba(255,255,255,.6);max-width:280px;line-height:1.7}
.footer-section__title{font-size:.85rem;font-weight:700;margin-bottom:14px;color:#fff}
.footer-nav ul{display:flex;flex-direction:column;gap:8px}
.footer-nav a{color:rgba(255,255,255,.6);font-size:.8rem}
.footer-nav a:hover{color:#fff}
.footer-copy{text-align:center;font-size:.75rem;color:rgba(255,255,255,.4);padding-top:20px;border-top:1px solid rgba(255,255,255,.1)}

/* ===== Search ===== */
.search-form{display:flex;gap:8px}
.search-form input[type="search"]{flex:1;padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:var(--bg);color:var(--text);font-size:.875rem;outline:none;transition:border-color var(--transition)}
.search-form input[type="search"]:focus{border-color:var(--c-accent)}
.search-form button{padding:8px 16px;border:none;border-radius:8px;background:var(--grad);color:#fff;font-weight:600;font-size:.875rem;cursor:pointer}

/* ===== 404 ===== */
.page-404{text-align:center;padding:80px 20px}
.page-404 h1{font-size:4rem;font-weight:800;color:var(--c-accent)}
.page-404 p{margin:16px 0 32px;color:var(--text-sub)}

/* ===== Responsive ===== */
@media(max-width:1024px){
  .featured-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}

@media(max-width:768px){
  .site-main{grid-template-columns:1fr;gap:24px}
  .menu-toggle{display:block}
  .global-nav{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:var(--c-primary);border-bottom:1px solid rgba(255,255,255,.1);padding:8px 20px;box-shadow:var(--shadow-lg)}
  [data-theme="dark"] .global-nav{background:#0a1525}
  .global-nav.is-open{display:block}
  .global-nav ul{flex-direction:column;gap:0}
  .global-nav li{border-bottom:1px solid rgba(255,255,255,.08)}
  .global-nav a{display:block;padding:12px 0;border-radius:0}
  .hero{padding:48px 0 40px}
  .hero .container{flex-direction:column;text-align:center}
  .hero__title{font-size:1.6rem}
  .hero__actions{justify-content:center}
  .hero__visual{display:none}
  .stats-bar .container{gap:24px}
  .stat__num{font-size:1.3rem}
  .post-grid{grid-template-columns:1fr}
  .post-card{grid-template-columns:120px 1fr}
  .post-card__body{padding:12px 14px}
  .post-card__title{font-size:.9rem;line-height:1.4;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .post-card__cat{font-size:.65rem;padding:1px 8px;margin-bottom:4px}
  .post-card__meta{font-size:.7rem}
  .post-card__excerpt{display:none}
  .article{padding:24px 16px}
  .article__title{font-size:1.3rem}
  .cta-banner{padding:32px 20px;margin:40px 0}
  .cta-banner__title{font-size:1.2rem}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .tab-list{gap:6px}
  .tab-link{padding:8px 14px;font-size:.8rem}
}