/*
Theme Name: GPTZero Chat
Theme URI: https://gptzero.chat/
Author: gptzero.chat
Description: Fast, SEO & GEO-optimized affiliate theme for gptzero.chat — an independent guide to the GPTZero AI detector. Built-in meta tags, JSON-LD schema (WebSite, SoftwareApplication, FAQPage, HowTo, Article, Breadcrumb), llms.txt, affiliate CTA shortcodes and auto-inserted CTAs in posts.
Version: 1.0.3
Requires at least: 6.0
Requires PHP: 7.4
License: GPL-2.0-or-later
Text Domain: gptzero-chat
*/

:root{
  --ink:#0f1222;
  --ink-2:#2b3050;
  --muted:#5d6380;
  --line:#e4e6f0;
  --bg:#ffffff;
  --bg-soft:#f6f7fb;
  --brand:#3b4cf5;
  --brand-dark:#2734c9;
  --accent:#12b886;
  --warn:#f59f00;
  --radius:14px;
  --shadow:0 10px 30px -12px rgba(15,18,34,.18);
  --max:1160px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.02em;margin:0 0 .6em}
h1{font-size:clamp(2rem,4.6vw,3.4rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.3rem);font-weight:800}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
.container{max-width:var(--max);margin:0 auto;padding:0 20px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px)}
.skip-link:focus{position:fixed;top:8px;left:8px;z-index:999;background:#fff;padding:8px 12px;clip:auto;width:auto;height:auto}

/* Disclosure bar */
.disclosure{background:var(--ink);color:#c9cde4;font-size:13px;text-align:center;padding:8px 16px}
.disclosure a{color:#fff;text-decoration:underline}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--accent));display:grid;place-items:center;color:#fff}
.brand small{font-weight:600;color:var(--muted);font-size:.8rem}
.main-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:26px}
.main-nav a{color:var(--ink-2);font-weight:600;font-size:15px}
.header-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:10px;width:42px;height:42px;cursor:pointer}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:18px;height:2px;background:var(--ink);margin:0 auto;position:relative;content:""}
.nav-toggle span::before{position:absolute;top:-6px}.nav-toggle span::after{position:absolute;top:6px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;border-radius:999px;padding:13px 24px;font-size:16px;border:2px solid transparent;cursor:pointer;transition:transform .15s,box-shadow .15s,background .15s;text-decoration:none!important;line-height:1.2}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 20px -8px rgba(59,76,245,.7)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-2)}
.btn-lg{padding:17px 32px;font-size:18px}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{filter:brightness(.95)}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,#e8ebff 0%,transparent 60%),radial-gradient(900px 400px at -10% 10%,#e6fbf3 0%,transparent 55%);padding:64px 0 56px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:18px}
.eyebrow .dot{width:8px;height:8px;background:var(--accent);border-radius:50%}
.hero h1 .hl{background:linear-gradient(90deg,var(--brand),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{font-size:1.15rem;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 18px}
.trust-row{display:flex;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:14px}
.trust-row span::before{content:"✓ ";color:var(--accent);font-weight:800}

.scan-card{background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:22px}
.scan-card .tabs{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.scan-card .tab{font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px;background:var(--bg-soft);color:var(--ink-2)}
.scan-card .tab.active{background:#eef0ff;color:var(--brand)}
.scan-card textarea{width:100%;min-height:180px;border:1px solid var(--line);border-radius:12px;padding:14px;font:inherit;font-size:15px;resize:vertical;background:var(--bg-soft)}
.scan-card textarea:focus{outline:2px solid #c7ccff;background:#fff}
.scan-foot{display:flex;justify-content:space-between;align-items:center;margin-top:12px;gap:12px;flex-wrap:wrap}
.scan-foot small{color:var(--muted)}
.scan-note{font-size:12.5px;color:var(--muted);margin:10px 0 0}

/* Stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:-10px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-align:center}
.stat b{display:block;font-size:1.9rem;font-weight:800;color:var(--ink)}
.stat span{color:var(--muted);font-size:14px}
.stats-src{text-align:center;font-size:12.5px;color:var(--muted);margin-top:10px}

/* Sections */
.section{padding:80px 0}
.section.soft{background:var(--bg-soft)}
.section-head{text-align:center;max-width:760px;margin:0 auto 44px}
.section-head p{color:var(--muted);font-size:1.08rem}

.answer-box{background:#fff;border-left:5px solid var(--brand);border-radius:12px;padding:24px 26px;box-shadow:var(--shadow);max-width:900px;margin:0 auto}
.answer-box h2{font-size:1.5rem}
.answer-box p:last-child{margin:0}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:box-shadow .2s,transform .2s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;background:#eef0ff;color:var(--brand);font-size:22px;margin-bottom:14px}
.card p{color:var(--ink-2);margin:0}

.steps{counter-reset:s;display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px 26px}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-18px;left:24px;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:grid;place-items:center}

.signals{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.signal{padding:22px;border-radius:var(--radius);background:#fff;border:1px dashed #cfd3e6}
.signal h3{color:var(--brand)}

/* Table */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.compare{width:100%;border-collapse:collapse;min-width:640px}
.compare th,.compare td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;font-size:15.5px}
.compare thead th{background:var(--ink);color:#fff;font-size:15px}
.compare thead th.win{background:var(--brand)}
.compare tbody tr:last-child td{border-bottom:0}
.compare td:first-child{font-weight:700;color:var(--ink-2);width:26%}
.yes{color:var(--accent);font-weight:700}

/* Pricing */
.pricing{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.plan{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;display:flex;flex-direction:column}
.plan.featured{border:2px solid var(--brand);box-shadow:var(--shadow);position:relative}
.plan.featured::before{content:"Most popular";position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px}
.plan .price{font-size:2.2rem;font-weight:800;margin:6px 0}
.plan .price small{font-size:1rem;color:var(--muted);font-weight:600}
.plan ul{list-style:none;padding:0;margin:14px 0 22px;flex:1}
.plan li{padding:6px 0 6px 24px;position:relative;font-size:15px;color:var(--ink-2)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--accent);font-weight:800}
.price-note{text-align:center;color:var(--muted);font-size:13.5px;margin-top:18px}

/* Audience */
.pill-list{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:10px 18px;font-weight:600}

/* Limitations */
.notice{background:#fff8e6;border:1px solid #ffe3a3;border-radius:var(--radius);padding:24px 26px}
.notice h3{color:#8a5a00}
.notice ul{margin:0;padding-left:20px}

/* FAQ */
.faq{max-width:860px;margin:0 auto}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:12px;padding:0 22px}
.faq summary{cursor:pointer;list-style:none;font-weight:700;padding:18px 30px 18px 0;position:relative;font-size:1.05rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:0;top:14px;font-size:1.5rem;color:var(--brand)}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-2);padding-bottom:18px;margin:0}

/* CTA band */
.cta-band{background:linear-gradient(120deg,var(--ink) 0%,#1d2350 60%,#163e44 100%);color:#fff;border-radius:24px;padding:56px 40px;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:#c9cde4;max-width:640px;margin:0 auto 26px}
.cta-band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}

/* In-content CTA box */
.gzc-cta{display:flex;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(120deg,#eef0ff,#e8fbf4);border:1px solid #d6dbff;border-radius:16px;padding:22px 24px;margin:32px 0}
.gzc-cta strong{display:block;font-size:1.1rem;color:var(--ink)}
.gzc-cta span{color:var(--ink-2);font-size:15px}
.gzc-cta .btn{flex-shrink:0}

/* Blog / single */
.page-hero{background:var(--bg-soft);padding:48px 0 36px;border-bottom:1px solid var(--line)}
.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:12px}
.breadcrumbs a{color:var(--muted)}
.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;padding:48px 0 80px}
.entry-content{font-size:18px}
.entry-content h2{margin-top:1.6em;font-size:1.7rem}
.entry-content h3{margin-top:1.3em}
.entry-content img{border-radius:12px}
.entry-content table{width:100%;border-collapse:collapse;margin:1.5em 0}
.entry-content th,.entry-content td{border:1px solid var(--line);padding:10px 12px}
.entry-content blockquote{border-left:4px solid var(--brand);margin:1.5em 0;padding:4px 20px;color:var(--ink-2);background:var(--bg-soft)}
.entry-meta{color:var(--muted);font-size:14px}
.sidebar .widget,.sticky-cta{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.sticky-cta{position:sticky;top:90px;text-align:center}
.sticky-cta .btn{width:100%}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:48px 0 80px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.post-card .thumb{aspect-ratio:16/9;background:var(--bg-soft);display:block;overflow:hidden}
.post-card .thumb img{width:100%;height:100%;object-fit:cover}
.post-card .body{padding:20px}
.post-card h2{font-size:1.15rem;margin-bottom:8px}
.post-card h2 a{color:var(--ink)}
.pagination{padding-bottom:60px;text-align:center}
.pagination .page-numbers{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:8px;margin:0 3px}
.pagination .current{background:var(--brand);color:#fff;border-color:var(--brand)}

/* Testimonials marquee */
.marquee{overflow:hidden;padding:8px 0;-webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee-track{display:flex;gap:20px;width:max-content;animation:gzc-scroll 55s linear infinite}
.marquee.reverse .marquee-track{animation-direction:reverse}
.marquee:hover .marquee-track{animation-play-state:paused}
@keyframes gzc-scroll{from{transform:translateX(0)}to{transform:translateX(calc(-50% - 10px))}}
@media (prefers-reduced-motion:reduce){.marquee-track{animation:none;flex-wrap:wrap;width:auto;justify-content:center}.marquee-track [aria-hidden=true]{display:none}}
.t-card{margin:0;width:340px;flex-shrink:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px 24px}
.t-card figcaption{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.t-card figcaption strong{display:block;font-size:15.5px}
.t-card figcaption small{display:block;color:var(--muted);font-size:13px;line-height:1.35}
.t-avatar{width:42px;height:42px;border-radius:12px;flex-shrink:0;display:grid;place-items:center;font-size:12px;font-weight:800;color:var(--brand);background:#eef0ff}
.t-card blockquote{margin:0;color:var(--ink-2);font-size:15.5px;line-height:1.6}
.press-row{display:flex;flex-wrap:wrap;gap:10px 26px;justify-content:center;align-items:center;margin-top:26px;color:var(--muted)}
.press-label{font-size:13px;text-transform:uppercase;letter-spacing:.08em;width:100%;text-align:center}
.press-name{font-weight:800;font-size:1.05rem;color:#9aa0b8;letter-spacing:-.01em}
@media (max-width:760px){.t-card{width:280px}}

.guide-card{display:flex;flex-direction:column;color:var(--ink);text-decoration:none!important}
.guide-card h3{margin:10px 0 8px;line-height:1.3}
.guide-card p{flex:1}
.guide-tag{align-self:flex-start;font-size:12px;font-weight:700;color:var(--brand);background:#eef0ff;padding:4px 10px;border-radius:999px}
.guide-more{margin-top:14px;font-weight:700;color:var(--brand)}

/* Footer */
.site-footer{background:var(--ink);color:#aeb3cf;padding:56px 0 30px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:40px}
.site-footer h4{color:#fff;font-size:1rem}
.site-footer a{color:#d5d8ec}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px}
.footer-bottom{border-top:1px solid #262b4a;margin-top:40px;padding-top:22px;font-size:13px}

/* Mobile sticky CTA */
.mobile-cta{display:none}

@media (max-width:980px){
  .hero-grid,.content-layout{grid-template-columns:1fr}
  .grid-3,.steps,.signals,.post-grid{grid-template-columns:1fr 1fr}
  .pricing{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr}
  .sticky-cta{position:static}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav-toggle{display:block}
  .main-nav{position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);display:none}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0;padding:8px 20px}
  .main-nav li a{display:block;padding:12px 0;border-bottom:1px solid var(--line)}
  .header-cta .btn{display:none}
  .grid-3,.grid-2,.steps,.signals,.post-grid,.pricing,.footer-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .gzc-cta{flex-direction:column;align-items:flex-start}
  .cta-band{padding:40px 22px}
  .mobile-cta{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:60;padding:10px 14px;background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px -10px rgba(0,0,0,.2)}
  .mobile-cta .btn{width:100%}
  body{padding-bottom:70px}
}