/*
Theme Name:  COOI Fund Blog
Theme URI:   https://cooi.jp/blog/
Author:      日徳 FUND
Author URI:  https://cooi.jp/
Description: cooi.jp 既存デザインに完全準拠したカスタムブログテーマ
Version:     2.0.0
License:     Proprietary
Text Domain: cooi-fund
*/

/* =====================================================
   CSS VARIABLES — assets.css と完全一致
===================================================== */
:root {
  --ink:    #09111d;
  --navy:   #071524;
  --navy2:  #0b2038;
  --blue:   #1678dc;
  --sky:    #6bb5ff;
  --paper:  #f5f6f8;
  --white:  #fff;
  --muted:  #697586;
  --line:   #dfe5ec;
  --gold:   #b8944d;
  --green:  #1e8c68;
  --danger: #a33a42;
  --max:    1240px;
}

/* =====================================================
   RESET / BASE
===================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans JP", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.8;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* =====================================================
   LAYOUT
===================================================== */
.wrap {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
}
.container {
  width: min(calc(100% - 40px), var(--max));
  margin: auto;
}

/* =====================================================
   HEADER — assets.css と完全一致
===================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 18, 31, .94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.nav {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Noto Serif JP", serif;
}
.logo b { font-size: 27px; line-height: 1; }
.logo-x {
  font: 600 13px/1 Montserrat, sans-serif;
  opacity: .85;
  margin: 0 2px;
  color: #fff;
}
.logo-img {
  height: 38px;
  width: auto;
  display: inline-block;
  vertical-align: middle;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: .85;
}

/* ナビリンク（PC） */
.navlinks {
  display: flex;
  gap: 22px;
  align-items: center;
  color: #d8e2ee;
  font-size: 13px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.navlinks a:hover { color: #fff; }
.navcta {
  padding: 10px 16px;
  border-radius: 999px;
  background: #1678dc;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  transition: .2s;
}
.navcta:hover { background: #1265c0; }

/* ハンバーガーボタン（モバイル） */
.menu {
  display: none;
  background: none;
  border: 0;
  cursor: pointer;
  padding: 4px;
}
.menu span {
  display: block;
  width: 25px;
  height: 2px;
  background: #fff;
  margin: 5px 0;
  transition: .3s;
}

/* =====================================================
   BLOG HERO
===================================================== */
.blog-hero {
  padding: 90px 0 60px;
  background: radial-gradient(circle at 76% 28%, rgba(43,134,231,.38), transparent 28%),
              linear-gradient(115deg, #06101d 10%, #0a1e35 58%, #104b84);
  color: #fff;
  text-align: center;
}
.blog-hero .eyebrow {
  font: 700 11px/1.2 Montserrat, sans-serif;
  letter-spacing: .22em;
  color: var(--gold);
  margin: 0 0 14px;
}
.blog-hero h1 {
  font: 700 clamp(34px, 5vw, 56px)/1.25 "Noto Serif JP", serif;
  margin: 0 0 16px;
}
.blog-hero p {
  color: #c2d4e8;
  max-width: 640px;
  margin: 0 auto;
  font-size: 15px;
}

/* =====================================================
   SINGLE ARTICLE HERO
===================================================== */
.single-hero {
  padding: 80px 0 50px;
  background: radial-gradient(circle at 76% 28%, rgba(43,134,231,.38), transparent 28%),
              linear-gradient(115deg, #06101d 10%, #0a1e35 58%, #104b84);
  color: #fff;
}
.single-hero .post-cat {
  font: 700 10px/1 Montserrat, sans-serif;
  letter-spacing: .22em;
  color: var(--gold);
  margin: 0 0 14px;
}
.single-hero h1 {
  font: 700 clamp(28px, 4vw, 48px)/1.3 "Noto Serif JP", serif;
  margin: 0 0 20px;
  max-width: 860px;
}
.single-hero .post-meta {
  font-size: 13px;
  color: #a8bdd0;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

/* =====================================================
   BREADCRUMB
===================================================== */
.breadcrumb {
  padding: 14px 0;
  font-size: 12px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.breadcrumb a { color: var(--blue); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; opacity: .5; }

/* =====================================================
   BLOG MAIN LAYOUT
===================================================== */
.blog-main { padding: 60px 0 90px; }

.blog-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 52px;
  align-items: start;
}

/* 記事グリッド */
.post-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.post-card {
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: 0 18px 45px rgba(3,17,31,.07);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: .3s;
}
.post-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 60px rgba(3,17,31,.12);
}
.post-card-thumb {
  aspect-ratio: 16/9;
  object-fit: cover;
  width: 100%;
}
.post-card-thumb-placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, #0a1b2f 0%, #0d3361 60%, rgba(212,175,55,.15) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.post-card-thumb-placeholder span {
  color: rgba(212,175,55,.5);
  font: 700 11px/1 Montserrat, sans-serif;
  letter-spacing: .2em;
}
.post-card-body {
  padding: 22px 22px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-cat {
  font: 700 10px/1 Montserrat, sans-serif;
  letter-spacing: .18em;
  color: var(--blue);
  margin: 0 0 8px;
}
.post-card-title {
  font: 700 17px/1.5 "Noto Serif JP", serif;
  margin: 0 0 10px;
  color: var(--ink);
}
.post-card-title a:hover { color: var(--blue); }
.post-card-excerpt {
  font-size: 13px;
  color: var(--muted);
  margin: 0 0 16px;
  flex: 1;
}
.post-card-meta {
  font-size: 11px;
  color: #9ba8b5;
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

/* =====================================================
   SINGLE POST LAYOUT
===================================================== */
.single-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 52px;
  align-items: start;
  padding: 52px 0 90px;
}

/* =====================================================
   ARTICLE CONTENT
===================================================== */
.entry-content {
  max-width: 100%;
  font-size: 16px;
  line-height: 1.9;
}
.entry-content h2 {
  font: 700 clamp(22px, 3vw, 32px)/1.35 "Noto Serif JP", serif;
  margin: 52px 0 18px;
  padding: 0 0 14px;
  border-bottom: 2px solid var(--line);
}
.entry-content h3 {
  font: 700 20px/1.4 "Noto Serif JP", serif;
  margin: 36px 0 12px;
  padding-left: 14px;
  border-left: 4px solid var(--gold);
}
.entry-content h4 {
  font: 700 17px/1.5 "Noto Sans JP", sans-serif;
  margin: 28px 0 10px;
  color: #2c4a6e;
}
.entry-content p { margin: 0 0 24px; }
.entry-content ul, .entry-content ol {
  padding-left: 1.5em;
  margin: 0 0 24px;
}
.entry-content li { margin-bottom: 8px; }
.entry-content blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: var(--paper);
  border-left: 4px solid var(--gold);
  border-radius: 0 8px 8px 0;
  color: var(--muted);
  font-style: italic;
}
.entry-content img {
  border-radius: 10px;
  margin: 24px 0;
  box-shadow: 0 8px 28px rgba(0,0,0,.1);
}
.entry-content a { color: var(--blue); text-decoration: underline; }
.entry-content a:hover { opacity: .8; }
.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 14px;
}
.entry-content th {
  background: #0a192b;
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
}
.entry-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
}
.entry-content tr:nth-child(even) td { background: var(--paper); }

/* 金融免責注記 */
.disclaimer-box {
  margin: 40px 0;
  padding: 20px 24px;
  background: #fff6e7;
  border: 1px solid #ecd8ac;
  border-radius: 6px;
  font-size: 13px;
  color: #725927;
  line-height: 1.7;
}
.disclaimer-box strong { color: #a33a42; }

/* =====================================================
   SIDEBAR
===================================================== */
.sidebar { position: sticky; top: 88px; }

.widget {
  background: #fff;
  border: 1px solid var(--line);
  padding: 25px;
  margin-bottom: 20px;
}
.widget-title {
  font: 700 11px/1.2 Montserrat, sans-serif;
  letter-spacing: .18em;
  color: var(--gold);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.widget ul { list-style: none; padding: 0; margin: 0; }
.widget ul li {
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}
.widget ul li:last-child { border-bottom: 0; }
.widget ul li a:hover { color: var(--blue); }

/* CTA サイドバーウィジェット */
.widget-cta {
  background: linear-gradient(145deg, #050b13, #0a1728);
  border: 1px solid rgba(184,148,77,.35);
  color: #fff;
  text-align: center;
}
.widget-cta .widget-title {
  color: var(--gold);
  border-color: rgba(184,148,77,.25);
}
.widget-cta p { font-size: 13px; color: rgba(255,255,255,.7); margin: 0 0 16px; }
.widget-cta-btn {
  display: block;
  padding: 13px;
  background: linear-gradient(135deg, #c9a455, #9a6f28);
  color: #fff;
  font-weight: 900;
  font-size: 13px;
  text-align: center;
  transition: .2s;
}
.widget-cta-btn:hover { opacity: .85; color: #fff; }

/* =====================================================
   PAGINATION
===================================================== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 48px;
}
.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  transition: .2s;
}
.pagination .page-numbers:hover,
.pagination .page-numbers.current {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

/* =====================================================
   FOOTER — assets.css の .footer と完全一致
===================================================== */
.footer {
  background: #050b13;
  color: #aebbc9;
  padding: 58px 0 22px;
}
.footergrid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 0.9fr;
  gap: 40px;
}
.footer h4 {
  color: #fff;
  margin: 0 0 12px;
  font: 700 12px/1.2 Montserrat, sans-serif;
  letter-spacing: .15em;
}
.footer p {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  line-height: 1.9;
  margin: 0;
}
.footer a {
  display: block;
  margin: 6px 0;
  font-size: 13px;
  color: rgba(255,255,255,.55);
}
.footer a:hover { color: #fff; }

/* フッターロゴ */
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  color: #fff;
  font-family: "Noto Serif JP", serif;
}
.footer-logo b { font-size: 24px; line-height: 1; }
.footer-logo-img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: .75;
  display: inline-block;
}

.copyright {
  border-top: 1px solid rgba(255,255,255,.09);
  padding-top: 18px;
  margin-top: 34px;
  font-size: 11px;
  color: #718093;
}

/* =====================================================
   404 PAGE
===================================================== */
.page-404 {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 80px 0;
  text-align: center;
}
.page-404 h1 {
  font: 700 clamp(60px, 12vw, 120px)/1 Montserrat, sans-serif;
  color: var(--gold);
  margin: 0 0 16px;
}
.page-404 h2 {
  font: 700 28px/1.4 "Noto Serif JP", serif;
  margin: 0 0 20px;
}
.page-404 p { color: var(--muted); margin: 0 0 32px; }
.page-404 .btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  border-radius: 5px;
  transition: .2s;
}
.page-404 .btn-back:hover { background: #1265c0; }

/* =====================================================
   RESPONSIVE — assets.css と同じブレイクポイント
===================================================== */
@media (max-width: 940px) {
  .navlinks {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: #071524;
    padding: 22px;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
  }
  .navlinks a {
    display: block;
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,.08);
    font-size: 14px;
  }
  .navlinks a:last-child { border-bottom: 0; }
  .navlinks.open { display: flex; }
  .menu { display: block; }

  .blog-layout { grid-template-columns: 1fr; }
  .single-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .footergrid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .post-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .wrap { width: min(calc(100% - 24px), var(--max)); }
  .blog-hero { padding: 60px 0 40px; }
  .single-hero { padding: 60px 0 36px; }
  .footergrid { grid-template-columns: 1fr; gap: 24px; }
  .blog-main { padding: 40px 0 60px; }
}