/*
Theme Name: AIコモン ブログ
Theme URI: https://ai-comon.jp/
Author: graciauto
Author URI: https://graciauto.jp/
Description: LP本体（ai-comon.jp）と同じヘッダー/フッター・配色・フォント・陽だまりガラス質感を持つ、AIコモンブログ専用の軽量クラシックテーマ。
Version: 1.0.0
Requires at least: 6.0
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: aicomon
*/

/* ============================================================
   Design tokens — LP本体 site.css と一致
   ============================================================ */
:root{
  --paper:#FAF6EF;
  --paper2:#F3EEE3;
  --ink:#2E2B26;
  --ink-60:rgba(46,43,38,.62);
  --ink-40:rgba(46,43,38,.42);
  --line:rgba(120,96,60,.16);
  --sage:#8FA98C;
  --terracotta:#E3A46E;
  --sky:#A8C7DE;
  --gold:#5C7A56;        /* 深セージグリーン（アクセント） */
  --lavender:#C6B7DD;
  --nav-bg:rgba(255,252,244,.78);
  --nav-bd:rgba(255,255,255,.85);
  --glass:rgba(255,252,244,.66);
  --glass-bd:rgba(255,255,255,.92);
  --glass-sh:0 20px 48px -20px rgba(120,96,60,.18), inset 0 1px 0 rgba(255,255,255,.6);
  --pad-x:clamp(20px,6vw,96px);
  --f-en:'Space Grotesk',sans-serif;
  --f-serif:'Cormorant Garamond',serif;
  --f-min:'Shippori Mincho',serif;
  --f-jp:'Zen Maru Gothic',sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--f-jp);
  font-weight:400;
  color:var(--ink);
  line-height:1.9;
  background:
    radial-gradient(1200px 700px at 78% -8%, rgba(143,169,140,.10), transparent 60%),
    radial-gradient(1000px 620px at -6% 8%, rgba(227,164,110,.08), transparent 60%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper2) 100%);
  background-attachment:fixed;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
::selection{background:rgba(92,122,86,.22)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* ============================================================
   Header / Nav — LP本体と同一マークアップ
   ============================================================ */
.nav{
  position:sticky;top:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:calc(12px + env(safe-area-inset-top)) var(--pad-x) 12px;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-bd);
  backdrop-filter:blur(18px) saturate(1.05) brightness(1.02);
  -webkit-backdrop-filter:blur(18px) saturate(1.05) brightness(1.02);
}
.brand{display:flex;align-items:center;gap:9px}
.brand svg.brand-logo{width:34px;height:34px;display:block;color:var(--ink)}
.brand .brand-jp{font:500 14px/1 var(--f-min);letter-spacing:.08em;color:var(--ink)}
.nav-links{
  display:flex;align-items:center;gap:2px;padding:6px 8px;border-radius:999px;
  background:rgba(255,252,244,.55);border:1px solid var(--nav-bd);
}
.nav-links a{
  font:500 10px/1 var(--f-en);letter-spacing:.2em;padding:9px 13px;border-radius:999px;
  transition:background .3s,color .3s;color:var(--ink);white-space:nowrap;
}
.nav-links a:hover,.nav-links a.is-here{background:var(--ink);color:var(--paper)}
.nav-right{display:flex;align-items:center;gap:10px}
.nav-cta{
  display:inline-flex;align-items:center;gap:8px;font:600 10.5px/1 var(--f-en);letter-spacing:.2em;
  padding:13px 20px;border-radius:999px;background:var(--ink);color:var(--paper);
  transition:opacity .3s,transform .3s;
}
.nav-cta:hover{opacity:.85}
.nav-cta i{width:5px;height:5px;border-radius:50%;background:linear-gradient(135deg,var(--sage),var(--gold))}

/* ============================================================
   Layout
   ============================================================ */
.site-main{
  max-width:1180px;margin:0 auto;
  padding:clamp(36px,7vh,88px) var(--pad-x) clamp(60px,10vh,120px);
}
.page-head{text-align:center;margin-bottom:clamp(34px,6vh,64px)}
.page-head .eyebrow{
  font:600 10px/1 var(--f-en);letter-spacing:.34em;text-transform:uppercase;color:var(--gold);
}
.page-head h1{
  margin:14px 0 0;font:500 clamp(1.7rem,4.4vw,2.6rem)/1.4 var(--f-min);
  letter-spacing:.02em;color:var(--ink);
}
.page-head p{margin:12px auto 0;max-width:40em;color:var(--ink-60);font-size:.94rem}
.page-head .serif-accent{font:400 1.1rem/1 var(--f-serif);font-style:italic;color:var(--sage);display:block;margin-bottom:8px}

/* ============================================================
   Post list — 陽だまりガラスカード
   ============================================================ */
.post-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  gap:clamp(20px,3vw,34px);
}
.post-card{
  display:flex;flex-direction:column;overflow:hidden;border-radius:22px;
  background:var(--glass);border:1px solid var(--glass-bd);box-shadow:var(--glass-sh);
  backdrop-filter:blur(12px) saturate(1.05) brightness(1.02);
  -webkit-backdrop-filter:blur(12px) saturate(1.05) brightness(1.02);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease);
}
.post-card:hover{transform:translateY(-6px);box-shadow:0 30px 60px -24px rgba(120,96,60,.28), inset 0 1px 0 rgba(255,255,255,.6)}
.post-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--paper2)}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.post-card:hover .thumb img{transform:scale(1.05)}
.post-card .thumb.no-img{
  display:grid;place-items:center;
  background:radial-gradient(120% 120% at 30% 20%, rgba(143,169,140,.18), transparent 60%), var(--paper2);
}
.post-card .thumb.no-img span{font:600 15px/1 var(--f-en);letter-spacing:.28em;color:var(--sage)}
.post-card .body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.cat-chip{
  align-self:flex-start;font:600 9px/1 var(--f-en);letter-spacing:.22em;text-transform:uppercase;
  padding:7px 12px;border-radius:999px;color:var(--gold);background:rgba(92,122,86,.10);
  border:1px solid rgba(92,122,86,.22);
}
.post-card h2{margin:0;font:500 1.16rem/1.5 var(--f-min);color:var(--ink)}
.post-card .excerpt{margin:0;font-size:.86rem;color:var(--ink-60);line-height:1.85}
.post-card .meta{margin-top:auto;display:flex;align-items:center;gap:12px;font:400 10px/1 var(--f-en);letter-spacing:.14em;color:var(--ink-40)}
.post-card .more{color:var(--gold);font-weight:600}

/* ============================================================
   Single article
   ============================================================ */
.article-wrap{max-width:780px;margin:0 auto}
.article-head{text-align:center;margin-bottom:clamp(26px,5vh,48px)}
.article-head .cat-chip{margin:0 auto 18px}
.article-head h1{margin:0;font:500 clamp(1.5rem,3.6vw,2.3rem)/1.55 var(--f-min);color:var(--ink);letter-spacing:.01em}
.article-head .meta{margin-top:16px;font:400 10.5px/1 var(--f-en);letter-spacing:.2em;color:var(--ink-40)}
.article-hero{margin:0 0 clamp(26px,5vh,44px);border-radius:22px;overflow:hidden;box-shadow:var(--glass-sh)}
.article-body{
  background:var(--glass);border:1px solid var(--glass-bd);box-shadow:var(--glass-sh);
  border-radius:24px;padding:clamp(28px,5vw,56px);
  backdrop-filter:blur(12px) saturate(1.05) brightness(1.02);
  -webkit-backdrop-filter:blur(12px) saturate(1.05) brightness(1.02);
}
.article-body>*:first-child{margin-top:0}
.article-body h2{
  margin:2.2em 0 .8em;padding-bottom:.4em;border-bottom:1px solid var(--line);
  font:500 1.4rem/1.5 var(--f-min);color:var(--ink);letter-spacing:.01em;
}
.article-body h3{margin:1.8em 0 .6em;font:500 1.16rem/1.5 var(--f-jp);font-weight:700;color:var(--ink)}
.article-body h4{margin:1.6em 0 .5em;font:700 1rem/1.5 var(--f-jp);color:var(--sage)}
.article-body p{margin:0 0 1.4em;font-size:1rem;color:var(--ink);line-height:2}
.article-body a{color:var(--gold);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{opacity:.75}
.article-body ul,.article-body ol{margin:0 0 1.5em;padding-left:1.4em}
.article-body li{margin:0 0 .55em;line-height:1.95}
.article-body ul li::marker{color:var(--sage)}
.article-body blockquote{
  margin:1.8em 0;padding:18px 24px;border-left:3px solid var(--sage);
  background:rgba(143,169,140,.08);border-radius:0 14px 14px 0;color:var(--ink-60);font-style:normal;
}
.article-body img{border-radius:14px;margin:1.6em 0}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body code{
  font-family:var(--f-en);font-size:.9em;background:rgba(46,43,38,.06);
  padding:.15em .45em;border-radius:6px;
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:2.4em 0}

/* CTA to LP */
.post-cta{
  margin:clamp(34px,6vh,60px) auto 0;max-width:780px;text-align:center;
  background:linear-gradient(135deg, rgba(143,169,140,.12), rgba(255,252,244,.7));
  border:1px solid var(--glass-bd);border-radius:24px;box-shadow:var(--glass-sh);
  padding:clamp(30px,5vw,48px);
}
.post-cta .serif{font:400 italic 1.15rem/1 var(--f-serif);color:var(--sage)}
.post-cta h3{margin:12px 0 8px;font:500 clamp(1.25rem,3vw,1.7rem)/1.5 var(--f-min);color:var(--ink)}
.post-cta p{margin:0 0 22px;color:var(--ink-60);font-size:.92rem}
.post-cta .btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn-solid,.btn-line{
  display:inline-flex;align-items:center;gap:8px;font:600 11px/1 var(--f-en);letter-spacing:.16em;
  padding:16px 28px;border-radius:999px;transition:transform .3s var(--ease),opacity .3s;
}
.btn-solid{background:var(--ink);color:var(--paper)}
.btn-solid:hover{transform:translateY(-3px);opacity:.9}
.btn-line{background:#06C755;color:#fff}
.btn-line:hover{transform:translateY(-3px);opacity:.9}

/* Back link */
.back-row{max-width:780px;margin:clamp(30px,5vh,50px) auto 0;text-align:center}
.back-row a{font:600 10px/1 var(--f-en);letter-spacing:.2em;color:var(--ink-60);transition:color .3s}
.back-row a:hover{color:var(--gold)}

/* Pagination */
.pagination{
  display:flex;justify-content:center;gap:8px;margin-top:clamp(40px,6vh,72px);flex-wrap:wrap;
}
.pagination .page-numbers{
  min-width:44px;height:44px;display:grid;place-items:center;padding:0 12px;border-radius:12px;
  font:500 12px/1 var(--f-en);letter-spacing:.08em;color:var(--ink-60);
  border:1px solid var(--line);background:rgba(255,252,244,.5);transition:all .3s;
}
.pagination .page-numbers:hover,.pagination .page-numbers.current{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* Empty / search */
.empty{max-width:600px;margin:60px auto;text-align:center;color:var(--ink-60)}
.search-form{display:flex;gap:10px;max-width:440px;margin:24px auto 0}
.search-form input[type=search]{
  flex:1;padding:14px 18px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.7);font-family:var(--f-jp);color:var(--ink);
}
.search-form button{padding:14px 22px;border:0;border-radius:999px;background:var(--ink);color:var(--paper);font:600 11px/1 var(--f-en);letter-spacing:.16em;cursor:pointer}

/* ============================================================
   Footer — LP本体と同一
   ============================================================ */
.site-footer{
  padding:clamp(56px,9vh,96px) var(--pad-x) calc(34px + env(safe-area-inset-bottom));
  border-top:1px solid var(--line);
}
.foot-word{
  font:600 clamp(2.6rem,10.5vw,8.5rem)/1 var(--f-en);letter-spacing:-.02em;text-transform:uppercase;
  color:transparent;-webkit-text-stroke:1px rgba(46,43,38,.55);text-align:center;
  transition:color 1s var(--ease);
}
.foot-word:hover{
  -webkit-text-stroke:1px transparent;
  background:linear-gradient(92deg,var(--gold),var(--terracotta),var(--sage),var(--sky),var(--lavender));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.foot-grid{
  max-width:1180px;margin:clamp(50px,8vh,80px) auto 0;
  display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:clamp(26px,4vw,60px);
}
.foot-brand .brand{margin-bottom:0}
.foot-brand p{margin-top:16px;font-size:.78rem;color:var(--ink-60);max-width:26em;line-height:1.9}
.foot-col b{display:block;font:600 9.5px/1 var(--f-en);letter-spacing:.3em;color:var(--ink-40);margin-bottom:18px}
.foot-col a{display:block;padding:6px 0;font-size:.82rem;color:var(--ink-60);transition:color .3s,transform .3s var(--ease)}
.foot-col a:hover{color:var(--ink);transform:translateX(4px)}
.foot-bottom{
  max-width:1180px;margin:clamp(44px,7vh,70px) auto 0;padding-top:24px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;
  font:400 9.5px/1.8 var(--f-en);letter-spacing:.2em;color:var(--ink-40);
}
.to-top{
  width:46px;height:46px;border:1px solid var(--ink);border-radius:50%;display:grid;place-items:center;
  background:transparent;color:var(--ink);cursor:pointer;transition:background .35s,color .35s;
}
.to-top:hover{background:var(--ink);color:var(--paper)}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:820px){
  .nav-links{display:none}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:520px){
  .nav{padding-left:18px;padding-right:18px}
  .foot-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:1fr}
  .nav-cta{padding:12px 16px}
}

/* WP core alignments */
.aligncenter{margin-left:auto;margin-right:auto}
.aligncenter{margin-left:auto;margin-right:auto}
.wp-caption{max-width:100%}
.wp-caption-text{font-size:.78rem;color:var(--ink-40);text-align:center;margin-top:8px}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}