/*
Theme Name: KUWAMASA Cross
Theme URI: https://kuwamasa-cross.jp/
Author: KUWAMASA Cross
Description: KUWAMASA Crossの実務解説・税制改正記事用テーマ
Version: 1.3.0
Text Domain: kuwamasa-cross
*/

:root{
  --kc-navy:#2f4f6f;
  --kc-navy-2:#426786;
  --kc-blue:#4d82ad;
  --kc-gold:#b89a5a;
  --kc-gold-soft:#e6d3a3;
  --kc-paper:#f7f6f2;
  --kc-paper-2:#fffefa;
  --kc-white:#ffffff;
  --kc-ink:#263442;
  --kc-muted:#5d6877;
  --kc-line:#ddd6c6;
  --kc-shadow:0 14px 38px rgba(16,33,63,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--kc-paper);
  color:var(--kc-ink);
  font-family:"Noto Sans JP","Yu Gothic","Meiryo",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--kc-blue);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--kc-navy)}
img{max-width:100%;height:auto}
.kc-container{width:min(1120px,calc(100% - 40px));margin:0 auto}

/* Header */
.kc-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid #e3e8ef;
  backdrop-filter:blur(12px);
}
.kc-header-inner{
  min-height:76px;display:flex;align-items:center;gap:30px;
}
.kc-brand{display:flex;align-items:center;text-decoration:none;flex:none}
.kc-brand img{width:188px;height:auto;display:block}
.kc-nav{display:flex;align-items:center;gap:24px;margin-left:auto}
.kc-nav a{
  color:var(--kc-navy);text-decoration:none;font-size:14px;font-weight:600;
  letter-spacing:.03em;padding:26px 0 23px;border-bottom:3px solid transparent;
}
.kc-nav a:hover{border-bottom-color:var(--kc-gold)}
.kc-admin{
  display:inline-flex;align-items:center;justify-content:center;
  background:#557896;color:#fff!important;border-radius:7px;
  padding:10px 15px!important;border:0!important;
}
.kc-admin:hover{background:var(--kc-navy-2)}
.kc-menu-button{display:none;border:1px solid var(--kc-line);background:#fff;border-radius:7px;padding:8px 11px}

/* Hero */
.kc-article-hero{
  background:
    radial-gradient(circle at 85% 10%,rgba(189,154,78,.16),transparent 31%),
    linear-gradient(135deg,#f8fbff 0%,#f5f1e7 100%);
  border-bottom:1px solid var(--kc-line);
}
.kc-article-hero-inner{padding:62px 0 54px}
.kc-eyebrow{
  display:flex;align-items:center;gap:10px;
  color:var(--kc-gold);font-size:12px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;margin-bottom:17px;
}
.kc-eyebrow:before{content:"";width:30px;height:2px;background:var(--kc-gold)}
.kc-title{
  margin:0;max-width:900px;color:var(--kc-navy);
  font-size:clamp(32px,4vw,52px);line-height:1.36;letter-spacing:.01em;
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
}
.kc-meta{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.kc-chip{
  display:inline-flex;align-items:center;border:1px solid #cbd7e5;
  background:rgba(255,255,255,.78);color:var(--kc-navy-2);
  border-radius:999px;padding:5px 11px;font-size:12px;font-weight:600;
}

/* Layout */
.kc-main{padding:48px 0 80px}
.kc-layout{display:grid;grid-template-columns:minmax(0,780px) 260px;gap:42px;align-items:start}
.kc-article{
  background:var(--kc-white);border:1px solid var(--kc-line);
  border-top:4px solid var(--kc-gold);border-radius:12px;
  box-shadow:0 10px 28px rgba(47,79,111,.06);padding:44px 48px 52px;
}
.kc-content{font-size:16px}
.kc-content>p:first-child{
  font-size:18px;line-height:1.9;color:#354257;
  background:linear-gradient(90deg,#f4f7fb,#fff);
  border-left:4px solid var(--kc-blue);padding:18px 21px;margin-top:0;
}
.kc-content h2{
  margin:52px 0 20px;padding:15px 18px;
  color:#fff;background:#eaf1f6;
  color:var(--kc-navy);
  border-left:5px solid var(--kc-gold);
  font-size:24px;line-height:1.45;letter-spacing:.02em;
}
.kc-content h3{
  margin:36px 0 14px;padding:0 0 9px;
  color:var(--kc-navy);font-size:20px;
  border-bottom:2px solid var(--kc-gold-soft);
}
.kc-content h4{color:var(--kc-navy);font-size:17px;margin-top:28px}
.kc-content p{margin:0 0 1.4em}
.kc-content ul,.kc-content ol{padding-left:1.4em;margin:14px 0 24px}
.kc-content li{margin:.45em 0}
.kc-content strong{color:var(--kc-navy)}
.kc-content blockquote{
  margin:26px 0;padding:20px 22px;
  background:#f7f9fc;border-left:4px solid var(--kc-gold);
  color:#3e4a5a;
}
.kc-content dl{
  display:grid;grid-template-columns:180px minmax(0,1fr);
  border:1px solid var(--kc-line);border-radius:9px;overflow:hidden;
  margin:18px 0 30px;background:#fff;
}
.kc-content dt,.kc-content dd{margin:0;padding:13px 16px;border-bottom:1px solid var(--kc-line)}
.kc-content dt{background:#f1f4f8;color:var(--kc-navy);font-weight:700}
.kc-content dd{background:#fff}
.kc-content dt:last-of-type,.kc-content dd:last-of-type{border-bottom:0}
.kc-content table{width:100%;border-collapse:collapse;margin:22px 0;display:block;overflow:auto}
.kc-content th,.kc-content td{border:1px solid var(--kc-line);padding:11px 13px;text-align:left}
.kc-content th{background:#557896;color:#fff}
.kc-content hr{border:0;border-top:1px solid var(--kc-line);margin:38px 0}
.kc-content small{color:var(--kc-muted)}
.kc-content a[target="_blank"]:after{content:" ↗";font-size:.75em;color:var(--kc-gold)}

/* Sidebar */
.kc-side{position:sticky;top:104px;display:grid;gap:18px}
.kc-side-box{
  border:1px solid var(--kc-line);border-radius:10px;background:#fff;padding:20px;
}
.kc-side-title{
  margin:0 0 13px;color:var(--kc-navy);font-size:14px;
  letter-spacing:.06em;border-bottom:2px solid var(--kc-gold);padding-bottom:8px;
}
.kc-side-box p{font-size:13px;color:var(--kc-muted);line-height:1.75;margin:0 0 10px}
.kc-side-box a{display:block;text-decoration:none;color:var(--kc-navy);font-size:13px;padding:7px 0;border-bottom:1px dashed var(--kc-line)}
.kc-side-box a:last-child{border-bottom:0}
.kc-back{
  display:inline-flex!important;justify-content:center;margin-top:8px;
  background:#557896;color:#fff!important;border-radius:6px;padding:10px 12px!important;
}

/* Archive */
.kc-archive-header{padding:52px 0 34px}
.kc-archive-title{font-family:"Yu Mincho",serif;color:var(--kc-navy);font-size:40px;margin:0}
.kc-post-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.kc-card{
  background:#fff;border:1px solid var(--kc-line);border-radius:10px;
  padding:23px;text-decoration:none;color:inherit;transition:.16s;
}
.kc-card:hover{transform:translateY(-2px);border-color:var(--kc-gold);box-shadow:var(--kc-shadow)}
.kc-card h2{font-size:18px;line-height:1.55;margin:0 0 12px;color:var(--kc-navy)}
.kc-card p{font-size:13px;color:var(--kc-muted);margin:0}
.kc-card-meta{font-size:11px;color:var(--kc-gold);font-weight:700;margin-bottom:9px}

/* Footer */
.kc-footer{background:#385a78;color:#dce5ec;border-top:2px solid var(--kc-gold-soft);padding:38px 0}
.kc-footer-inner{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
.kc-footer strong{color:#fff}
.kc-footer p{font-size:12px;max-width:680px;margin:7px 0 0}
.kc-footer a{color:var(--kc-gold-soft)}

/* WordPress */
.navigation.pagination{margin-top:34px}
.nav-links{display:flex;gap:7px;flex-wrap:wrap}
.page-numbers{background:#fff;border:1px solid var(--kc-line);padding:7px 11px;border-radius:5px;text-decoration:none}
.page-numbers.current{background:#557896;color:#fff}
.screen-reader-text{position:absolute;left:-9999px}

@media(max-width:900px){
  .kc-layout{grid-template-columns:1fr}
  .kc-side{position:static;grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .kc-container{width:min(100% - 28px,1120px)}
  .kc-header-inner{min-height:66px}
  .kc-brand img{width:158px}
  .kc-menu-button{display:block;margin-left:auto}
  .kc-nav{
    display:none;position:absolute;left:0;right:0;top:66px;background:#fff;
    border-bottom:1px solid var(--kc-line);padding:10px 20px 18px;flex-direction:column;align-items:stretch;gap:0
  }
  .kc-nav.is-open{display:flex}
  .kc-nav a{padding:11px 0;border-bottom:1px solid #edf0f4}
  .kc-admin{text-align:center;margin-top:8px}
  .kc-article-hero-inner{padding:42px 0 38px}
  .kc-title{font-size:31px}
  .kc-main{padding-top:28px}
  .kc-article{padding:28px 20px 36px}
  .kc-content h2{font-size:21px;margin-top:40px}
  .kc-content dl{grid-template-columns:1fr}
  .kc-content dt{border-bottom:0;padding-bottom:4px}
  .kc-content dd{padding-top:4px}
  .kc-side{grid-template-columns:1fr}
  .kc-post-grid{grid-template-columns:1fr}
  .kc-footer-inner{display:block}
}


/* v1.2 softer visual tuning */
.kc-content h2{
  box-shadow:inset 0 -1px 0 rgba(47,79,111,.08);
  border-radius:6px;
}
.kc-side-box{
  background:#fffefa;
  box-shadow:0 8px 20px rgba(47,79,111,.04);
}
.kc-article{
  background:#fffefa;
}
.kc-article-hero{
  background:
    radial-gradient(circle at 85% 10%,rgba(184,154,90,.10),transparent 31%),
    linear-gradient(135deg,#f9fbfc 0%,#f6f4ee 100%);
}
.kc-footer{
  background:#385a78;
}
.kc-footer strong{color:#fff}
.kc-card h2{color:#355a78}


/* =========================================================
   v1.3 Long-form explanation components
   KUWAMASA database layout + readable editorial format
   ========================================================= */
.kc-longform{
  margin-top:58px;
  padding-top:42px;
  border-top:3px double var(--kc-line);
}
.kc-longform>h2:first-child{
  margin-top:0;
}
.kc-longform h2{
  position:relative;
  margin:54px 0 25px;
  padding:19px 23px;
  color:#fff;
  background:linear-gradient(135deg,#315a78,#284b66);
  border:0;
  border-radius:7px;
  box-shadow:0 10px 24px rgba(38,67,91,.13);
  font-size:24px;
  line-height:1.45;
}
.kc-longform h2:after{
  content:"";
  position:absolute;
  inset:6px;
  border:1px dashed rgba(255,255,255,.42);
  border-radius:4px;
  pointer-events:none;
}
.kc-longform h3{
  margin-top:38px;
  padding:0 0 10px;
  border-bottom:2px solid var(--kc-gold-soft);
  color:#315a78;
}
.kc-summary-box,.kc-practice-box,.kc-note-box,.kc-faq-item{
  margin:26px 0;
  padding:24px 26px;
  border-radius:8px;
}
.kc-summary-box{
  background:#fbf8ef;
  border:1px solid #d7c28f;
  border-left:6px solid var(--kc-gold);
}
.kc-summary-box h3,.kc-practice-box h3,.kc-note-box h3,.kc-faq-item h3{
  margin:0 0 12px;
  padding:0;
  border:0;
  font-size:19px;
}
.kc-summary-box p:last-child,.kc-practice-box p:last-child,.kc-note-box p:last-child,.kc-faq-item p:last-child{margin-bottom:0}
.kc-practice-box{
  background:#f2f7f9;
  border:1px solid #b9cdd8;
  border-top:4px solid var(--kc-blue);
}
.kc-note-box{
  background:#fffefa;
  border:1px solid var(--kc-line);
}
.kc-faq-item{
  background:#fff;
  border:1px solid #b8cad5;
  box-shadow:0 7px 18px rgba(47,79,111,.05);
}
.kc-faq-item h3:before{
  content:"Q";
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:30px;height:30px;
  margin-right:10px;
  border-radius:50%;
  background:#315a78;color:#fff;
  font-family:Inter,sans-serif;
  font-size:14px;
}
.kc-content mark{
  color:inherit;
  background:linear-gradient(transparent 58%,rgba(230,211,163,.72) 58%);
  padding:0 .06em;
}
.kc-content .kc-lead{
  font-size:18px;
  line-height:1.95;
  color:#354257;
}
.kc-toc{
  margin:34px 0 42px;
  padding:0;
  border:1px solid var(--kc-line);
  border-radius:9px;
  background:linear-gradient(135deg,#fbfcfd,#f8f6ef);
  overflow:hidden;
}
.kc-toc-title{
  display:flex;
  align-items:baseline;
  gap:12px;
  padding:15px 20px;
  color:#fff;
  background:#3a617e;
  font-weight:700;
}
.kc-toc-title small{color:#dce8ef;font-size:10px;letter-spacing:.16em}
.kc-toc ol{margin:0;padding:17px 22px 18px 48px}
.kc-toc li{margin:.5em 0;color:var(--kc-gold)}
.kc-toc a{color:#304a61;text-decoration:none}
.kc-toc a:hover{text-decoration:underline}
.kc-toc-level-3{margin-left:18px!important;font-size:14px}
.kc-video-section{margin:30px 0 38px}
.kc-video-frame{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border-radius:10px;
  background:#1b2b38;
  box-shadow:0 14px 30px rgba(26,48,66,.16);
}
.kc-video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.kc-longform table{display:table;table-layout:auto}
.kc-longform th{background:#315a78}
.kc-longform td{background:#fff}
.kc-longform .wp-block-table{overflow-x:auto}
.kc-longform .wp-block-table table{min-width:620px}
.kc-content .kc-cta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:18px;
  margin:30px 0;
  padding:23px 25px;
  background:#28724f;
  color:#fff;
  border-radius:10px;
  text-decoration:none;
  box-shadow:0 10px 22px rgba(29,91,62,.14);
}
.kc-content .kc-cta:hover{background:#215e42;color:#fff}
.kc-cta strong{color:#fff!important;font-size:18px}
.kc-cta small{display:block;color:#d8eee2;margin-top:3px}
.kc-cta:after{content:"→";font-size:25px}

@media(max-width:760px){
  .kc-longform{margin-top:42px;padding-top:30px}
  .kc-longform h2{font-size:20px;padding:17px 18px}
  .kc-summary-box,.kc-practice-box,.kc-note-box,.kc-faq-item{padding:20px 18px}
  .kc-toc ol{padding-left:40px}
  .kc-longform .wp-block-table table{min-width:560px}
}