/*
Theme Name: Cevre Sehir Kutuphanesi
Theme URI: https://cevresehirkutuphanesi.com
Author: Custom Build
Description: Custom editorial theme built for AI-Overview-ready, E-E-A-T-first content publishing across Sustainability, Business & Startups, Technology & AI, and Marketing & Finance. Implements topical hub pages, article answer-blocks, author credential boxes, FAQ schema, and freshness signals per the site's 2026 content strategy.
Version: 1.0.0
Requires PHP: 7.4
Text Domain: csk
*/

/* ============================================================
   DESIGN TOKENS
   Palette: ink (near-black green), paper (cool grey-parchment,
   NOT warm cream), teal (sustainability-rooted primary accent),
   ochre (secondary/highlight), clay (sparing alert accent only).
   Type: Fraunces (display serif) / Public Sans (body) /
   IBM Plex Mono (meta, dates, schema chips).
   ============================================================ */
:root{
  --ink:        #16211C;
  --ink-soft:   #3B453F;
  --paper:      #EDEEE9;
  --paper-raise:#F7F7F3;
  --line:       #D8D9D0;
  --teal:       #2F6D5B;
  --teal-deep:  #1F4B3E;
  --ochre:      #C68E17;
  --clay:       #A8503A;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Public Sans", -apple-system, Segoe UI, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --radius-sm: 3px;
  --radius-md: 6px;
  --maxw: 1180px;
  --gap: 28px;
}

@font-face{font-family:"Fraunces";src:local("Fraunces");}
@font-face{font-family:"Public Sans";src:local("Public Sans");}
@font-face{font-family:"IBM Plex Mono";src:local("IBM Plex Mono");}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--teal-deep);text-decoration-color:transparent;text-underline-offset:3px;transition:text-decoration-color .15s ease;}
a:hover{text-decoration:underline;text-decoration-color:currentColor;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--ochre); outline-offset:2px;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm);}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.15;margin:0 0 .5em;font-weight:600;}
h1{font-size:clamp(2.1rem,4vw,3.1rem);}
h2{font-size:clamp(1.5rem,2.6vw,2rem);}
h3{font-size:1.25rem;}
p{margin:0 0 1.1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--teal-deep);display:inline-flex;align-items:center;gap:6px;
}
.eyebrow::before{content:"";width:14px;height:1px;background:var(--teal-deep);display:inline-block;}

/* ============================================================
   SIGNATURE ELEMENT — Citation Chips
   Mirrors the AI-Overview citation-chip UI the whole strategy
   is built around: small pill status badges surfaced on cards,
   article headers, and hub pages (Schema / Updated / FAQ).
   ============================================================ */
.chip-row{display:flex;flex-wrap:wrap;gap:6px;margin:.6em 0;}
.chip{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.02em;
  padding:3px 9px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper-raise);color:var(--ink-soft);display:inline-flex;align-items:center;gap:5px;
}
.chip svg{width:11px;height:11px;flex:none;}
.chip--schema{border-color:var(--teal);color:var(--teal-deep);}
.chip--updated{border-color:var(--ochre);color:#7A5A0E;}
.chip--faq{border-color:var(--ink-soft);}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(237,238,233,.96);backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
/* Row 1: logo + search + mobile toggle */
.header-row{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;gap:18px;max-width:var(--maxw);margin:0 auto;}
.site-logo{font-family:var(--font-display);font-weight:700;font-size:1.25rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em;white-space:nowrap;}
.site-logo span{color:var(--teal);}
.header-search{display:flex;align-items:center;gap:10px;margin-left:auto;}
.header-search input[type="search"]{
  font-family:var(--font-body);border:1px solid var(--line);background:var(--paper-raise);
  border-radius:999px;padding:7px 14px;font-size:.85rem;width:200px;
}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:var(--radius-sm);padding:6px 10px;cursor:pointer;flex:none;margin-left:8px;}

/* Row 2: full-width category strip — solves the wrap-mid-word bug by
   giving nav its own row, and falls back to horizontal scroll rather
   than wrapping text inside a link if there are still too many items. */
.nav-row{border-top:1px solid var(--line);}
.primary-nav{max-width:var(--maxw);margin:0 auto;padding:0 24px;overflow-x:auto;scrollbar-width:thin;}
.primary-nav ul{
  list-style:none;display:flex;gap:8px;margin:0;padding:9px 0;
  flex-wrap:nowrap;
}
.primary-nav li{flex:none;}
.primary-nav a{
  display:inline-block;white-space:nowrap;font-size:.88rem;font-weight:600;color:var(--ink-soft);
  text-decoration:none;padding:6px 12px;border-radius:999px;transition:background .15s ease,color .15s ease;
}
.primary-nav a:hover{color:var(--teal-deep);background:var(--paper-raise);text-decoration:none;}

@media (max-width:860px){
  .header-search input[type="search"]{width:140px;}
  .nav-toggle{display:block;}
  .nav-row{
    position:absolute;top:100%;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);
    display:none;
  }
  .nav-row.is-open{display:block;}
  .primary-nav{overflow-x:visible;padding:0 24px;}
  .primary-nav ul{flex-direction:column;flex-wrap:wrap;padding:16px 0;gap:4px;}
  .primary-nav a{padding:9px 4px;border-radius:0;}
}

/* ============================================================
   HOMEPAGE — Hero
   ============================================================ */
.hero-section{padding:44px 0 10px;}
.hero-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:var(--gap);}
.hero-feature{
  position:relative;border-radius:var(--radius-md);overflow:hidden;background:var(--ink);color:#fff;min-height:380px;
  display:flex;align-items:flex-end;
}
.hero-feature img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.55;border-radius:0;}
.hero-feature-body{position:relative;padding:28px;z-index:2;}
.hero-feature .eyebrow{color:#D9F0E6;}
.hero-feature .eyebrow::before{background:#D9F0E6;}
.hero-feature h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.05rem);}
.hero-feature p{color:#E4E7DF;max-width:46ch;}
.hero-side{display:flex;flex-direction:column;gap:var(--gap);}
.hero-card{
  background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-md);padding:18px;
  display:flex;flex-direction:column;gap:8px;
}
.hero-card h3{font-size:1.05rem;margin:0;}
.hero-card a{text-decoration:none;color:inherit;}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr;}}

/* ============================================================
   CATEGORY PREVIEW BLOCKS (Homepage)
   Hub & spoke motif: a thin connective line joins the section
   heading to its card row, echoing the site's topical-cluster
   internal-linking model.
   ============================================================ */
.cat-preview{padding:34px 0;}
.cat-preview-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:16px;position:relative;padding-left:20px;}
.cat-preview-head::before{
  content:"";position:absolute;left:0;top:6px;bottom:-14px;width:1px;background:var(--line);
}
.cat-preview-head::after{
  content:"";position:absolute;left:-4px;top:2px;width:9px;height:9px;border-radius:50%;background:var(--teal);
}
.cat-preview-head h2{margin:0;}
.cat-preview-head .view-all{font-size:.85rem;font-weight:600;white-space:nowrap;}
.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media (max-width:860px){.article-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.article-grid{grid-template-columns:1fr;}}
.article-card{
  background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;
  display:flex;flex-direction:column;
}
.article-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--line);}
.article-card .thumb img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.article-card-body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:6px;flex:1;}
.article-card h3{font-size:1.02rem;margin:0;}
.article-card h3 a{color:var(--ink);text-decoration:none;}
.article-card h3 a:hover{color:var(--teal-deep);}
.article-card .excerpt{font-size:.88rem;color:var(--ink-soft);margin:0;}
.card-meta{font-family:var(--font-mono);font-size:.7rem;color:var(--ink-soft);opacity:.8;}

/* ============================================================
   TRUST STRIP
   ============================================================ */
.trust-strip{background:var(--ink);color:#EDEEE9;padding:22px 0;}
.trust-strip .container{display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;}
.trust-item{display:flex;align-items:center;gap:10px;font-size:.88rem;}
.trust-item .dot{width:7px;height:7px;border-radius:50%;background:var(--ochre);flex:none;}

/* ============================================================
   NEWSLETTER
   ============================================================ */
.newsletter{padding:40px 0;}
.newsletter-box{
  background:var(--teal-deep);color:#fff;border-radius:var(--radius-md);padding:30px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;
}
.newsletter-box h2{color:#fff;margin:0 0 4px;font-size:1.5rem;}
.newsletter-box p{color:#CFE4DB;margin:0;max-width:44ch;}
.newsletter-form{display:flex;gap:8px;flex-wrap:wrap;}
.newsletter-form input[type="email"]{
  padding:11px 14px;border-radius:999px;border:none;font-family:var(--font-body);min-width:220px;
}
.newsletter-form button{
  padding:11px 20px;border-radius:999px;border:none;background:var(--ochre);color:var(--ink);font-weight:700;cursor:pointer;
}
.newsletter-form button:hover{background:#DCA22E;}

/* ============================================================
   CATEGORY HUB PAGE
   ============================================================ */
.hub-intro{padding:36px 0 10px;}
.hub-intro-grid{display:grid;grid-template-columns:2fr 1fr;gap:36px;align-items:start;}
.hub-intro-copy p{color:var(--ink-soft);}
.hub-radial{
  width:100%;aspect-ratio:1/1;max-width:220px;justify-self:end;
}
.breadcrumbs{font-family:var(--font-mono);font-size:.75rem;color:var(--ink-soft);margin:16px 0;}
.breadcrumbs a{color:var(--ink-soft);}
@media (max-width:860px){.hub-intro-grid{grid-template-columns:1fr;}.hub-radial{display:none;}}

.subtopic-pills{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 6px;}
.subtopic-pills a{
  font-size:.82rem;font-weight:600;padding:6px 14px;border-radius:999px;border:1px solid var(--teal);
  color:var(--teal-deep);text-decoration:none;
}
.subtopic-pills a:hover{background:var(--teal);color:#fff;}

.hub-articles{padding:22px 0 46px;}

/* ============================================================
   FAQ ACCORDION (shared: category hub + article)
   ============================================================ */
.faq-block{padding:20px 0 40px;border-top:1px solid var(--line);margin-top:36px;}
.faq-block h2{margin-bottom:6px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;text-align:left;background:none;border:none;padding:16px 4px;
  font-family:var(--font-body);font-weight:700;font-size:1rem;color:var(--ink);
  display:flex;justify-content:space-between;align-items:center;gap:12px;cursor:pointer;
}
.faq-q .plus{font-family:var(--font-mono);color:var(--teal);flex:none;transition:transform .2s ease;}
.faq-item[open] .plus{transform:rotate(45deg);}
.faq-a{padding:0 4px 16px;color:var(--ink-soft);}
.faq-a p{margin:0;font-size:.95rem;}

/* ============================================================
   SINGLE ARTICLE
   ============================================================ */
.article-header{padding:34px 0 4px;}
.article-header h1{max-width:26ch;}
.article-meta-row{display:flex;flex-wrap:wrap;gap:16px;align-items:center;font-family:var(--font-mono);font-size:.78rem;color:var(--ink-soft);margin:10px 0;}
.article-feature-img{margin:18px 0 26px;border-radius:var(--radius-md);overflow:hidden;}
.article-feature-img figcaption{font-size:.78rem;color:var(--ink-soft);padding:8px 2px 0;font-style:italic;}

.answer-block{
  background:var(--paper-raise);border:1px solid var(--teal);border-left:4px solid var(--teal);
  border-radius:var(--radius-sm);padding:18px 20px;margin:0 0 30px;
}
.answer-block .eyebrow{margin-bottom:8px;}
.answer-block p{margin:0;font-size:1.02rem;color:var(--ink);}

.author-box{
  display:flex;gap:14px;align-items:flex-start;background:var(--paper-raise);border:1px solid var(--line);
  border-radius:var(--radius-md);padding:16px;margin:0 0 30px;
}
.author-box img{width:56px;height:56px;border-radius:50%;object-fit:cover;flex:none;}
.author-box .name{font-weight:700;margin-bottom:2px;}
.author-box .credential{font-size:.86rem;color:var(--ink-soft);margin-bottom:4px;}
.author-box a.profile-link{font-size:.8rem;font-weight:600;}

.article-layout{display:grid;grid-template-columns:1fr 240px;gap:40px;align-items:start;}
.article-body h2{margin-top:1.6em;}
.article-body h3{margin-top:1.3em;}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.92rem;}
.article-body table th,.article-body table td{border:1px solid var(--line);padding:9px 12px;text-align:left;}
.article-body table th{background:var(--paper-raise);font-family:var(--font-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.03em;}
.article-body .definition{background:var(--paper-raise);border-left:3px solid var(--ochre);padding:2px 10px;font-size:.95rem;}
.article-body blockquote{border-left:3px solid var(--teal);margin:1.4em 0;padding:4px 0 4px 18px;color:var(--ink-soft);font-style:italic;}

.toc-box{position:sticky;top:96px;background:var(--paper-raise);border:1px solid var(--line);border-radius:var(--radius-md);padding:16px;}
.toc-box .eyebrow{margin-bottom:8px;}
.toc-box ol{margin:0;padding-left:1.1em;font-size:.85rem;display:flex;flex-direction:column;gap:6px;}
.toc-box a{color:var(--ink-soft);}
@media (max-width:960px){.article-layout{grid-template-columns:1fr;}.toc-box{position:static;}}

.internal-links{background:var(--paper-raise);border-radius:var(--radius-md);padding:18px 20px;margin:32px 0;}
.internal-links h2{font-size:1.1rem;}
.internal-links ul{margin:0;padding-left:1.1em;}
.internal-links li{margin-bottom:6px;}

.freshness-note{
  font-family:var(--font-mono);font-size:.78rem;color:var(--ink-soft);border-top:1px dashed var(--line);
  padding-top:14px;margin-top:30px;
}

/* ============================================================
   AUTHOR PAGE
   ============================================================ */
.author-header{padding:40px 0;display:flex;gap:24px;align-items:center;}
.author-header img{width:96px;height:96px;border-radius:50%;object-fit:cover;}
.author-header .credential{color:var(--ink-soft);}
.author-socials a{margin-right:12px;font-size:.85rem;font-weight:600;}

/* ============================================================
   EDITORIAL / GENERIC PAGE
   ============================================================ */
.page-content{padding:34px 0 60px;max-width:74ch;}
.page-content h2{margin-top:1.4em;}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:var(--ink);color:#D6D8CF;padding:48px 0 26px;margin-top:40px;}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:28px;}
.footer-col h4{color:#fff;font-family:var(--font-mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;}
.footer-col a{color:#B9BCB1;font-size:.88rem;text-decoration:none;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid #2A352F;margin-top:32px;padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.8rem;color:#8B9086;}
@media (max-width:860px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}

/* Footer mini contact form */
.footer-col--contact{grid-column:span 1;min-width:220px;}
.mini-contact-form{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.mini-contact-form input,.mini-contact-form textarea{
  font-family:var(--font-body);font-size:.85rem;padding:9px 11px;border-radius:var(--radius-sm);
  border:1px solid #333F38;background:#1E2A24;color:#EDEEE9;
}
.mini-contact-form input::placeholder,.mini-contact-form textarea::placeholder{color:#8B9086;}
.mini-contact-form input:focus,.mini-contact-form textarea:focus{outline:2px solid var(--ochre);outline-offset:1px;}
.mini-contact-form textarea{min-height:70px;resize:vertical;}
.mini-contact-form button{
  align-self:flex-start;padding:8px 18px;border-radius:999px;border:none;background:var(--ochre);
  color:var(--ink);font-weight:700;font-size:.85rem;cursor:pointer;
}
.mini-contact-form button:hover{background:#DCA22E;}
.footer-socials{list-style:none;margin:12px 0 0;padding:0;display:flex;gap:14px;}
.contact-form-notice{font-size:.82rem;border-radius:var(--radius-sm);padding:8px 10px;margin:0 0 10px;}
.contact-form-notice--ok{background:rgba(47,109,91,.25);color:#9FD9C4;}
.contact-form-notice--err{background:rgba(168,80,58,.25);color:#E7B3A3;}

/* Utility */
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto;} *{transition:none!important;}}