/*
Theme Name: Usfans Spreadsheet
Theme URI: https://sheetfinds.com/
Author: Usfans Spreadsheet Team
Author URI: https://sheetfinds.com/
Description: SEO-optimized WordPress theme for Usfans Spreadsheet guides, product links, haul finds, and category navigation. Built for fast Google indexing with clean semantic HTML, structured data, internal link graph, and mobile-first responsive layout.
Version: 1.0.0
Requires at least: 5.8
Tested up to: 6.6
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: usfans-spreadsheet
Tags: seo, blog, one-column, two-columns, right-sidebar, responsive-layout, custom-menu, featured-images, threaded-comments, translation-ready
*/

:root{
  --color-bg:#ffffff;
  --color-surface:#f7f8fb;
  --color-surface-2:#eef0f6;
  --color-text:#161922;
  --color-text-soft:#4a5062;
  --color-muted:#8a90a2;
  --color-border:#e3e6ef;
  --color-primary:#ff4423;
  --color-primary-dark:#d4321a;
  --color-accent:#1a1f36;
  --color-success:#16a34a;
  --radius-sm:6px;
  --radius-md:10px;
  --radius-lg:16px;
  --shadow-sm:0 2px 6px rgba(16,22,42,.06);
  --shadow-md:0 8px 24px rgba(16,22,42,.08);
  --font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --container:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-sans);font-size:16px;line-height:1.65;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary);text-decoration:none;transition:color .15s ease}
a:hover{color:var(--color-primary-dark)}
h1,h2,h3,h4,h5,h6{font-family:var(--font-sans);line-height:1.25;margin:0 0 .6em;color:var(--color-accent);font-weight:800;letter-spacing:-.01em}
h1{font-size:clamp(2rem,4vw,3rem)}
h2{font-size:clamp(1.6rem,3vw,2.25rem)}
h3{font-size:clamp(1.25rem,2.2vw,1.5rem)}
h4{font-size:1.15rem}
p{margin:0 0 1.1em}
ul,ol{padding-left:1.25rem;margin:0 0 1.1em}
li{margin-bottom:.4em}
hr{border:0;border-top:1px solid var(--color-border);margin:3rem 0}
blockquote{border-left:4px solid var(--color-primary);padding:.6rem 1rem;background:var(--color-surface);margin:1.5rem 0;color:var(--color-text-soft);border-radius:0 var(--radius-md) var(--radius-md) 0}

.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:70px 0}
.section-sm{padding:40px 0}
.section-tight{padding:50px 0}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--color-primary);font-weight:700;margin-bottom:.8rem}
.lead{font-size:1.15rem;color:var(--color-text-soft);max-width:720px}
.text-center{text-align:center}
.mx-auto{margin-left:auto;margin-right:auto}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:14px 28px;border-radius:var(--radius-md);font-weight:700;font-size:.95rem;text-decoration:none;transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease;border:2px solid transparent;cursor:pointer;line-height:1}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-dark{background:var(--color-accent);color:#fff}
.btn-dark:hover{background:#000;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-outline{background:transparent;color:var(--color-accent);border-color:var(--color-accent)}
.btn-outline:hover{background:var(--color-accent);color:#fff}
.btn-ghost{background:var(--color-surface);color:var(--color-text)}
.btn-ghost:hover{background:var(--color-surface-2);color:var(--color-text)}
.btn-lg{padding:18px 34px;font-size:1rem}
.btn-sm{padding:10px 18px;font-size:.85rem}
.btn-group{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- Header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 20px;max-width:var(--container);margin:0 auto}
.site-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.3rem;color:var(--color-accent);letter-spacing:-.02em}
.site-brand .brand-mark{width:34px;height:34px;border-radius:8px;background:var(--color-primary);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:1.1rem}
.site-brand:hover{color:var(--color-accent)}
.primary-nav{display:flex;align-items:center;gap:4px}
.primary-nav>ul{list-style:none;padding:0;margin:0;display:flex;align-items:center;gap:4px}
.primary-nav>ul>li{position:relative}
.primary-nav>ul>li>a{display:inline-block;padding:10px 14px;color:var(--color-text);font-weight:600;font-size:.95rem;border-radius:var(--radius-sm)}
.primary-nav>ul>li>a:hover,.primary-nav>ul>li.active>a{color:var(--color-primary);background:var(--color-surface)}
.has-dropdown>a::after{content:" \25BE";font-size:.75em;color:var(--color-muted)}
.dropdown-menu{position:absolute;top:100%;left:0;min-width:260px;background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-md);padding:8px;margin:0;list-style:none;opacity:0;visibility:hidden;transform:translateY(6px);transition:all .18s ease;z-index:200}
.has-dropdown:hover>.dropdown-menu,.has-dropdown.open>.dropdown-menu,.has-dropdown:focus-within>.dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-menu li{margin:0}
.dropdown-menu a{display:block;padding:9px 14px;color:var(--color-text);font-size:.9rem;font-weight:500;border-radius:var(--radius-sm)}
.dropdown-menu a:hover{background:var(--color-surface);color:var(--color-primary)}
.header-cta{display:flex;gap:10px;align-items:center}
.nav-toggle{display:none;background:none;border:0;font-size:1.5rem;cursor:pointer;color:var(--color-accent);padding:6px}

/* ---------- Hero ---------- */
.hero{background:linear-gradient(135deg,#1a1f36 0%,#2d1a4a 100%);color:#fff;padding:90px 0 100px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 85% 20%,rgba(255,68,35,.18),transparent 50%),radial-gradient(circle at 15% 80%,rgba(76,65,255,.15),transparent 55%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero h1{color:#fff;margin-bottom:1rem}
.hero h1 span{color:var(--color-primary)}
.hero .lead{color:rgba(255,255,255,.85);font-size:1.2rem;max-width:580px;margin-bottom:2rem}
.hero .btn-group{margin-bottom:2.5rem}
.hero-trust{display:inline-flex;align-items:center;gap:10px;padding:8px 16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);border-radius:999px;font-size:.85rem;color:rgba(255,255,255,.9);margin-bottom:1.4rem;backdrop-filter:blur(6px)}
.hero-trust .dot{width:8px;height:8px;border-radius:50%;background:var(--color-success);box-shadow:0 0 0 4px rgba(22,163,74,.25)}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:2rem}
.hero-stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:var(--radius-md);padding:16px;text-align:center}
.hero-stat strong{display:block;font-size:1.6rem;color:#fff;font-weight:800}
.hero-stat span{font-size:.78rem;color:rgba(255,255,255,.7);text-transform:uppercase;letter-spacing:.08em}
.hero-card{background:#fff;color:var(--color-text);border-radius:var(--radius-lg);padding:28px;box-shadow:0 24px 60px rgba(0,0,0,.3)}
.hero-card h3{color:var(--color-accent);margin-bottom:1rem}
.hero-card ul{list-style:none;padding:0;margin:0 0 1.4rem}
.hero-card li{padding:10px 0;display:flex;align-items:flex-start;gap:10px;border-bottom:1px solid var(--color-border);color:var(--color-text-soft);font-size:.95rem}
.hero-card li:last-child{border-bottom:0}
.hero-card li::before{content:"\2713";color:var(--color-success);font-weight:900;flex-shrink:0}

/* ---------- Section titles ---------- */
.section-head{text-align:center;max-width:720px;margin:0 auto 50px}
.section-head p{color:var(--color-text-soft);font-size:1.05rem}

/* ---------- Category grid ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.cat-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:24px 20px;text-align:center;transition:all .18s ease;text-decoration:none;color:var(--color-text);display:block}
.cat-card:hover{border-color:var(--color-primary);transform:translateY(-3px);box-shadow:var(--shadow-md);color:var(--color-text)}
.cat-card .cat-icon{width:52px;height:52px;border-radius:12px;background:var(--color-surface);display:inline-flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:12px;color:var(--color-primary)}
.cat-card h3{font-size:1.05rem;margin-bottom:4px;color:var(--color-accent)}
.cat-card span{color:var(--color-muted);font-size:.82rem}
.cat-card .arrow{display:inline-block;margin-top:10px;color:var(--color-primary);font-weight:700;font-size:.85rem}

/* ---------- Article grid ---------- */
.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px}
.article-card{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:24px;transition:all .18s ease;display:flex;flex-direction:column;height:100%}
.article-card:hover{border-color:var(--color-primary);transform:translateY(-3px);box-shadow:var(--shadow-md)}
.article-card .tag{display:inline-block;font-size:.7rem;background:var(--color-surface);color:var(--color-primary);padding:4px 10px;border-radius:999px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:12px}
.article-card h3{font-size:1.15rem;margin-bottom:.6rem;color:var(--color-accent);min-height:2.5em}
.article-card h3 a{color:inherit}
.article-card h3 a:hover{color:var(--color-primary)}
.article-card p{color:var(--color-text-soft);font-size:.92rem;flex-grow:1}
.article-meta{color:var(--color-muted);font-size:.8rem;margin-top:12px;display:flex;align-items:center;gap:12px}
.article-card .read-more{color:var(--color-primary);font-weight:700;font-size:.9rem;margin-top:12px;display:inline-block}

/* ---------- Content prose (article pages) ---------- */
.prose{max-width:820px;margin:0 auto;font-size:1.05rem;color:var(--color-text)}
.prose h2{margin-top:2.4rem;padding-bottom:.4rem;border-bottom:2px solid var(--color-surface-2)}
.prose h3{margin-top:1.8rem}
.prose p,.prose ul,.prose ol{color:var(--color-text-soft);line-height:1.8}
.prose a{color:var(--color-primary);font-weight:600;border-bottom:1px solid rgba(255,68,35,.3)}
.prose a:hover{border-bottom-color:var(--color-primary)}
.prose img{border-radius:var(--radius-md);margin:1.5rem auto}
.prose table{width:100%;border-collapse:collapse;margin:1.6rem 0;font-size:.95rem}
.prose th,.prose td{padding:12px 14px;border:1px solid var(--color-border);text-align:left}
.prose th{background:var(--color-surface);font-weight:700;color:var(--color-accent)}

/* ---------- Article page header ---------- */
.page-head{background:var(--color-surface);padding:60px 0 50px;border-bottom:1px solid var(--color-border);text-align:center}
.page-head .eyebrow{color:var(--color-primary)}
.page-head h1{margin-bottom:.6rem;max-width:860px;margin-left:auto;margin-right:auto}
.page-head .meta{color:var(--color-muted);font-size:.9rem;display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.breadcrumbs{font-size:.85rem;color:var(--color-muted);margin-bottom:1rem}
.breadcrumbs a{color:var(--color-text-soft)}
.breadcrumbs span{margin:0 6px}

/* ---------- CTA banner ---------- */
.cta-banner{background:linear-gradient(135deg,#ff4423 0%,#ff6a3d 100%);color:#fff;border-radius:var(--radius-lg);padding:50px 40px;text-align:center;margin:3rem 0}
.cta-banner h2{color:#fff;margin-bottom:.6rem}
.cta-banner p{color:rgba(255,255,255,.95);max-width:620px;margin:0 auto 1.5rem;font-size:1.05rem}
.cta-banner .btn-primary{background:#fff;color:var(--color-primary)}
.cta-banner .btn-primary:hover{background:var(--color-accent);color:#fff}
.cta-banner .btn-outline{color:#fff;border-color:#fff}
.cta-banner .btn-outline:hover{background:#fff;color:var(--color-primary)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;counter-reset:step}
.step{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);padding:28px 22px;position:relative;counter-increment:step}
.step::before{content:"0" counter(step);position:absolute;top:16px;right:20px;font-size:2.2rem;font-weight:900;color:var(--color-surface-2);line-height:1}
.step h3{font-size:1.1rem;margin-bottom:.4rem}
.step p{color:var(--color-text-soft);font-size:.92rem;margin:0}

/* ---------- Features (why choose) ---------- */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.feature{background:var(--color-surface);border-radius:var(--radius-md);padding:28px;border:1px solid var(--color-border)}
.feature .icon{width:46px;height:46px;border-radius:10px;background:var(--color-primary);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:1.3rem;margin-bottom:12px}
.feature h3{font-size:1.1rem;margin-bottom:.5rem}
.feature p{color:var(--color-text-soft);font-size:.95rem;margin:0}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--color-border);border-radius:var(--radius-md);margin-bottom:14px;overflow:hidden}
.faq-q{width:100%;background:none;border:0;padding:20px 24px;text-align:left;font-weight:700;color:var(--color-accent);font-size:1.02rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;font-family:inherit}
.faq-q::after{content:"+";font-size:1.5rem;color:var(--color-primary);font-weight:400;transition:transform .2s ease}
.faq-item.open .faq-q::after{content:"\2212"}
.faq-a{padding:0 24px 20px;color:var(--color-text-soft);display:none}
.faq-item.open .faq-a{display:block}

/* ---------- Related / internal links block ---------- */
.related-posts{background:var(--color-surface);border-radius:var(--radius-md);padding:30px;margin:3rem 0}
.related-posts h3{margin-bottom:1rem;color:var(--color-accent)}
.related-posts ul{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:10px}
.related-posts li{padding:10px 14px;background:#fff;border-radius:var(--radius-sm);border:1px solid var(--color-border)}
.related-posts a{color:var(--color-text);font-weight:600;font-size:.92rem}
.related-posts a:hover{color:var(--color-primary)}

/* ---------- Footer ---------- */
.site-footer{background:#0f1322;color:rgba(255,255,255,.75);padding:60px 0 24px;margin-top:60px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:36px}
.footer-brand p{color:rgba(255,255,255,.65);font-size:.95rem;margin:12px 0 20px;max-width:320px}
.footer-brand .site-brand{color:#fff}
.footer-col h4{color:#fff;font-size:.95rem;margin-bottom:14px;text-transform:uppercase;letter-spacing:.08em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:8px}
.footer-col a{color:rgba(255,255,255,.65);font-size:.9rem}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:12px}
.footer-bottom a{color:rgba(255,255,255,.65)}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:40px}
  .hero{padding:60px 0 70px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:50px 0}
}
@media (max-width:720px){
  .nav-toggle{display:block}
  .primary-nav{position:fixed;top:0;right:-100%;width:85%;max-width:340px;height:100vh;background:#fff;flex-direction:column;align-items:stretch;padding:70px 20px 20px;box-shadow:-8px 0 24px rgba(0,0,0,.1);transition:right .25s ease;z-index:300;overflow-y:auto}
  .primary-nav.open{right:0}
  .primary-nav>ul{flex-direction:column;gap:2px;width:100%}
  .primary-nav>ul>li{width:100%}
  .primary-nav>ul>li>a{display:block;padding:12px 14px}
  .dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;background:var(--color-surface);margin:4px 0 8px;padding:4px;max-height:0;overflow:hidden;transition:max-height .25s ease}
  .has-dropdown.open>.dropdown-menu{max-height:600px}
  .header-cta .btn{display:none}
  .header-cta .btn-primary{display:inline-flex}
  .hero-stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-banner{padding:36px 24px}
  .section-head{margin-bottom:36px}
}

/* ---------- Utility ---------- */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mt-0{margin-top:0}
.mb-0{margin-bottom:0}