/*
Theme Name: KAIRON Blog
Theme URI: https://kairon-ai.de
Author: PREGA Design
Author URI: https://kairon-ai.de
Description: Zweisprachiges (DE/EN) Blog-Theme im KAIRON-Look (Slate & Kupfer, Enterprise) fuer den /blog-Bereich. Passt optisch zur statischen KAIRON-Landingpage (gemeinsame Navigation und Fusszeile). Sprach-Badge, DE/EN-Filter und DE<->EN-Umschalter zwischen Schwester-Artikeln. Enthaelt einen wp_mail()-Endpoint fuer das Kontaktformular der Landingpage.
Version: 1.2
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: kairon
*/

:root{
  --accent:#c2773f; --accent-2:#e0a06a; --accent-deep:#9a5a2e;
  --glow:rgba(194,119,63,.55); --soft:rgba(194,119,63,.14);
  --positive:#3cc88a;
  --bg:#0e1217; --bg-2:#121821; --panel:#171e28; --panel-2:#1c2531;
  --line:rgba(255,255,255,.08); --line-2:rgba(255,255,255,.14);
  --ink:#f3f6fd; --txt:#aab4cc; --txt-2:#7b86a1; --txt-3:#5a637a;
  --maxw:1180px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,"Cascadia Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{background:var(--bg);color:var(--ink);font-family:var(--font);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip;}
a{color:var(--accent-2);text-decoration:none;}
a:hover{color:#fff;}
img{max-width:100%;height:auto;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
.hl{background:linear-gradient(180deg,#f0cba6,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent;}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;border-radius:8px;z-index:200;}
.skip-link:focus{left:12px;top:12px;}

/* ---------- ambient background ---------- */
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(800px 500px at 85% -5%, rgba(194,119,63,.16), transparent 60%),
    radial-gradient(700px 600px at -5% 30%, rgba(194,119,63,.08), transparent 55%),
    linear-gradient(180deg,var(--bg) 0%, var(--bg-2) 55%, var(--bg) 100%);}
.site-nav,.site-main-wrap,.site-footer{position:relative;z-index:1;}

/* ---------- navigation ---------- */
.site-nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(140%) blur(14px);
  background:rgba(7,11,22,.72);border-bottom:1px solid var(--line);}
.site-nav .bar{max-width:var(--maxw);margin:0 auto;padding:14px 28px;display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.16em;color:#fff;font-size:15px;}
.brand .mark{width:26px;height:26px;flex:0 0 auto;}
.brand .sub{color:var(--txt-2);font-weight:600;letter-spacing:.12em;}
.links{display:flex;align-items:center;gap:22px;margin-left:8px;}
.links a{color:var(--txt);font-size:14px;font-weight:500;transition:color .2s;}
.links a:hover,.links a.active{color:#fff;}
.right{margin-left:auto;display:flex;align-items:center;gap:14px;}
.nav-cta{display:inline-block;background:linear-gradient(180deg,#e0a06a,#c2773f);color:#fff !important;
  border-radius:999px;padding:9px 18px;font-size:14px;font-weight:700;box-shadow:0 8px 22px rgba(194,119,63,.35);transition:transform .15s,box-shadow .25s;}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 12px 30px rgba(194,119,63,.5);}
.nav-burger{display:none;background:none;border:0;color:#fff;cursor:pointer;padding:4px;}
.nav-burger svg{width:26px;height:26px;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:rgba(7,11,22,.96);}
.mobile-panel .wrap{display:flex;flex-direction:column;gap:4px;padding-top:14px;padding-bottom:18px;}
.mobile-panel a{color:var(--txt);padding:10px 0;border-bottom:1px solid var(--line);font-weight:500;}
.mobile-panel a:hover,.mobile-panel a.active{color:#fff;}
.site-nav.open .mobile-panel{display:block;}
@media(max-width:880px){
  .links{display:none;}
  .nav-cta{display:none;}
  .nav-burger{display:inline-flex;}
}

/* ---------- page head ---------- */
.page-head{padding:64px 0 36px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(194,119,63,.06),transparent);}
.page-head .eyebrow{font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--accent-2);}
.page-head h1{margin:14px 0 0;font-size:clamp(30px,4.4vw,48px);line-height:1.08;letter-spacing:-.025em;color:#fff;font-weight:800;}
.page-head p{margin:16px 0 0;font-size:17px;color:var(--txt);max-width:42em;}
.page-head .article h1{max-width:18em;}

/* ---------- main / grid ---------- */
.site-main{padding:48px 0 96px;}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media(max-width:980px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:620px){.post-grid{grid-template-columns:1fr;}}

/* ---------- card ---------- */
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  background:linear-gradient(180deg,var(--panel),var(--bg-2));transition:transform .2s,border-color .2s,box-shadow .25s;}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:0 24px 60px rgba(0,0,0,.45);}
.card .thumb{display:block;aspect-ratio:16/9;overflow:hidden;background:var(--panel-2);}
.card .thumb img{width:100%;height:100%;object-fit:cover;}
.card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card .cat{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-2);}
.card h2{font-size:19px;line-height:1.3;letter-spacing:-.01em;color:#fff;font-weight:700;margin:0;}
.card h2 a{color:inherit;}
.card h2 a:hover{color:var(--accent-2);}
.card .excerpt{font-size:14.5px;color:var(--txt);margin:0;flex:1;}
.card .meta{font-size:12.5px;color:var(--txt-3);display:flex;gap:12px;margin-top:4px;}
.card .more{margin-top:6px;font-size:13.5px;font-weight:600;color:var(--accent-2);}

/* ---------- article ---------- */
.article{max-width:760px;margin:0 auto;}
.a-meta{display:flex;flex-wrap:wrap;gap:16px;font-size:13px;color:var(--txt-3);margin-bottom:26px;}
.a-feat{margin:0 0 30px;border-radius:18px;overflow:hidden;border:1px solid var(--line);}
.a-content{font-size:17px;line-height:1.78;color:#dde4f3;}
.a-content > *{margin:0 0 1.2em;}
.a-content h2{font-size:28px;line-height:1.2;color:#fff;font-weight:800;margin:1.8em 0 .6em;letter-spacing:-.02em;}
.a-content h3{font-size:21px;color:#fff;font-weight:700;margin:1.5em 0 .5em;}
.a-content a{color:var(--accent-2);text-decoration:underline;text-underline-offset:3px;}
.a-content a:hover{color:#fff;}
.a-content ul,.a-content ol{padding-left:1.3em;}
.a-content li{margin:.4em 0;}
.a-content blockquote{border-left:3px solid var(--accent);padding:4px 0 4px 20px;color:var(--txt);font-style:italic;
  background:linear-gradient(90deg,var(--soft),transparent);}
.a-content code{font-family:var(--mono);font-size:.9em;background:rgba(255,255,255,.06);padding:2px 6px;border-radius:6px;}
.a-content pre{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;overflow:auto;}
.a-content pre code{background:none;padding:0;}
.a-content img{border-radius:12px;}
.a-content hr{border:0;border-top:1px solid var(--line);}
.a-tags{margin-top:34px;display:flex;flex-wrap:wrap;gap:8px;}
.a-tags a{font-size:12.5px;color:var(--txt);border:1px solid var(--line);border-radius:999px;padding:5px 12px;}
.a-tags a:hover{border-color:var(--accent);color:#fff;}

/* ---------- post navigation ---------- */
.post-nav{max-width:760px;margin:48px auto 0;display:flex;justify-content:space-between;gap:18px;}
.post-nav a{flex:1;border:1px solid var(--line);border-radius:14px;padding:16px 18px;color:var(--ink);font-weight:600;font-size:15px;transition:border-color .2s,background .2s;}
.post-nav a:hover{border-color:var(--accent);background:var(--soft);}
.post-nav .pn-label{display:block;font-size:12px;color:var(--txt-3);font-weight:600;margin-bottom:4px;}

/* ---------- pagination ---------- */
.pagination{margin-top:48px;display:flex;justify-content:center;gap:8px;flex-wrap:wrap;}
.pagination .page-numbers{display:inline-flex;min-width:42px;height:42px;align-items:center;justify-content:center;
  padding:0 12px;border:1px solid var(--line);border-radius:10px;color:var(--txt);font-weight:600;}
.pagination .page-numbers:hover{border-color:var(--accent);color:#fff;}
.pagination .page-numbers.current{background:linear-gradient(180deg,#e0a06a,#c2773f);color:#fff;border-color:transparent;}

/* ---------- comments ---------- */
.comments{max-width:760px;margin:56px auto 0;border-top:1px solid var(--line);padding-top:36px;}
.comments h3{color:#fff;font-size:22px;margin:0 0 20px;}
.comments ol{list-style:none;padding:0;margin:0;}
.comments .comment{border:1px solid var(--line);border-radius:14px;padding:16px 18px;margin-bottom:14px;background:var(--panel);}
.comments .comment .author{font-weight:700;color:#fff;font-size:14px;}
.comments .comment .date{font-size:12px;color:var(--txt-3);margin-left:8px;}
.comments .children{list-style:none;margin:14px 0 0 24px;padding:0;}
.comments .comment-form{margin-top:28px;display:grid;gap:14px;}
.comments .comment-form label{font-size:13px;color:var(--txt);font-weight:600;}
.comments .comment-form input,.comments .comment-form textarea{width:100%;background:rgba(255,255,255,.03);
  border:1px solid var(--line-2);border-radius:10px;padding:12px 14px;color:var(--ink);font:inherit;font-size:15px;}
.comments .comment-form input:focus,.comments .comment-form textarea:focus{outline:none;border-color:var(--accent-2);box-shadow:0 0 0 3px var(--soft);}
.comments .form-submit input,.comments .submit{background:linear-gradient(180deg,#e0a06a,#c2773f);color:#fff;border:0;
  border-radius:999px;padding:12px 26px;font-weight:700;cursor:pointer;}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--line);background:linear-gradient(180deg,transparent,rgba(194,119,63,.04));padding:56px 0 32px;}
.site-footer .top{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
.fbrand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.16em;color:#fff;}
.fbrand .mark{width:26px;height:26px;}
.ftag{margin:14px 0 0;font-size:14px;color:var(--txt);max-width:34em;line-height:1.7;}
.site-footer h4{color:#fff;font-size:13px;letter-spacing:.08em;text-transform:uppercase;margin:0 0 14px;}
.site-footer ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:9px;}
.site-footer ul a{color:var(--txt);font-size:14px;}
.site-footer ul a:hover{color:#fff;}
.site-footer .bottom{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--txt-3);}
.site-footer .bottom .legal{display:flex;gap:18px;}
@media(max-width:780px){.site-footer .top{grid-template-columns:1fr;gap:28px;}}

/* ---------- search form ---------- */
.search-form{display:flex;gap:8px;max-width:440px;margin:18px 0 0;}
.search-form input[type=search]{flex:1;background:rgba(255,255,255,.03);border:1px solid var(--line-2);border-radius:10px;padding:11px 14px;color:var(--ink);font:inherit;}
.search-form button{background:linear-gradient(180deg,#e0a06a,#c2773f);color:#fff;border:0;border-radius:10px;padding:0 18px;font-weight:700;cursor:pointer;}

/* ---------- 404 ---------- */
.notfound{text-align:center;padding:90px 0;}
.notfound h1{font-size:64px;color:#fff;margin:0;}
.notfound p{color:var(--txt);margin:12px 0 24px;}

/* ---------- bilingual (DE/EN) ---------- */
/* Safety: ensure [hidden] always wins over .card{display:flex} etc. */
[hidden]{display:none !important;}
/* English-only helper line in the intro, shown subtly under the German lead. */
.page-head p span[lang=en]{display:block;margin-top:6px;color:var(--txt-3);font-size:14.5px;font-style:italic;}

/* Language filter pills on the listing pages. */
.lang-filter{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 0;}
.lang-pill{appearance:none;cursor:pointer;font:inherit;font-size:13px;font-weight:600;
  padding:7px 14px;border-radius:999px;color:var(--txt);
  background:rgba(255,255,255,.03);border:1px solid var(--line-2);transition:.18s;}
.lang-pill:hover{color:#fff;border-color:var(--accent);}
.lang-pill.active{color:#fff;background:var(--soft);border-color:var(--accent);}
.lang-empty{color:var(--txt-2);padding:24px 0;}

/* Language badge on cards. */
.card-tags{display:flex;align-items:center;gap:10px;}
.lang-badge{font-size:10.5px;font-weight:800;letter-spacing:.08em;line-height:1;
  padding:4px 7px;border-radius:6px;border:1px solid var(--line-2);color:var(--txt-2);}
.lang-badge.lang-en{color:#f0cba6;border-color:rgba(91,139,255,.45);background:var(--soft);}
.lang-badge.lang-de{color:var(--positive);border-color:rgba(47,210,122,.35);background:rgba(47,210,122,.10);}

/* DE<->EN switch on the single article header. */
.lang-switch{display:inline-flex;align-items:center;gap:9px;margin:18px 0 0;
  font-size:14px;font-weight:600;color:#fff;
  padding:9px 16px;border-radius:999px;border:1px solid var(--accent);background:var(--soft);transition:.18s;}
.lang-switch:hover{background:var(--accent);color:#fff;}
.lang-switch .lang-flag{font-size:11px;font-weight:800;letter-spacing:.06em;
  padding:3px 6px;border-radius:5px;background:rgba(255,255,255,.12);}