/*
Theme Name: Calculate Wiki
Theme URI: https://calculatewiki.com
Author: Calculate Wiki
Author URI: https://calculatewiki.com
Description: A clean, fast, trustworthy calculator/reference platform theme built for a real online calculator directory (construction, finance, math, health & fitness, everyday, conversion, and pet calculators). Mobile-first, AdSense-ready, accessible.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: calculate-wiki
*/

/* =========================================================
   1. CSS VARIABLES / DESIGN TOKENS
========================================================= */
:root{
  --cw-bg:            #ffffff;
  --cw-bg-alt:        #f6f8fa;
  --cw-border:        #e3e7ec;
  --cw-text:          #1c2530;
  --cw-text-muted:    #5b6672;
  --cw-primary:       #0b6e4f;   /* trustworthy green accent */
  --cw-primary-dark:  #08543c;
  --cw-primary-light: #e6f4ef;
  --cw-accent-2:      #1f5c8b;   /* secondary blue for links/info */
  --cw-error:         #b3261e;
  --cw-success:       #0b6e4f;
  --cw-radius:        10px;
  --cw-radius-sm:     6px;
  --cw-shadow:        0 1px 2px rgba(20,30,40,.05), 0 4px 12px rgba(20,30,40,.06);
  --cw-shadow-sm:     0 1px 2px rgba(20,30,40,.06);
  --cw-max-width:     1180px;
  --cw-font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --cw-font-serif:    Georgia, "Times New Roman", serif;
}

/* =========================================================
   2. RESET / BASE
========================================================= */
*, *::before, *::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--cw-font);
  color:var(--cw-text);
  background:var(--cw-bg);
  font-size:16px;
  line-height:1.6;
  overflow-x:hidden;
}
img{ max-width:100%; height:auto; display:block; }
a{ color:var(--cw-accent-2); text-decoration:none; }
a:hover{ text-decoration:underline; }
h1,h2,h3,h4{ line-height:1.25; font-weight:700; color:var(--cw-text); margin:0 0 .6em; }
h1{ font-size:clamp(1.8rem,4vw,2.6rem); }
h2{ font-size:clamp(1.4rem,3vw,1.9rem); }
h3{ font-size:1.2rem; }
p{ margin:0 0 1em; }
ul{ margin:0 0 1em; padding-left:1.2em; }
button, input, select, textarea{ font-family:inherit; font-size:1rem; }
:focus-visible{ outline:3px solid #7fb8ff; outline-offset:2px; }
.skip-link{ position:absolute; left:-9999px; top:0; background:var(--cw-primary); color:#fff; padding:10px 16px; z-index:9999; }
.skip-link:focus{ left:10px; top:10px; }

.container{ max-width:var(--cw-max-width); margin:0 auto; padding:0 20px; }
.section{ padding:56px 0; }
.section-alt{ background:var(--cw-bg-alt); }
.section-header{ text-align:center; max-width:680px; margin:0 auto 36px; }
.section-header p{ color:var(--cw-text-muted); }
.text-center{ text-align:center; }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 22px; border-radius:var(--cw-radius-sm); font-weight:600;
  border:1px solid transparent; cursor:pointer; transition:background .15s ease, color .15s ease, border-color .15s ease;
  text-decoration:none; font-size:.98rem; min-height:44px;
}
.btn:hover{ text-decoration:none; }
.btn-primary{ background:var(--cw-primary); color:#fff; }
.btn-primary:hover{ background:var(--cw-primary-dark); color:#fff; }
.btn-outline{ background:transparent; border-color:var(--cw-border); color:var(--cw-text); }
.btn-outline:hover{ border-color:var(--cw-primary); color:var(--cw-primary); }
.btn-block{ width:100%; }

/* =========================================================
   3. HEADER
========================================================= */
.site-header{
  border-bottom:1px solid var(--cw-border);
  background:#fff;
}
.site-header-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  max-width:var(--cw-max-width); margin:0 auto; padding-left:20px; padding-right:20px;
}
.site-branding{ display:flex; align-items:center; gap:10px; }
.site-title{ font-size:1.35rem; font-weight:800; color:var(--cw-text); margin:0; }
.site-title a{ color:var(--cw-text); text-decoration:none; display:flex; align-items:center; gap:8px;}
.site-logo-mark{
  width:34px; height:34px; border-radius:8px; background:var(--cw-primary);
  color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800; font-size:1.1rem;
  flex:none;
}
.site-tagline{ display:none; }

.primary-nav-toggle{
  display:none; background:none; border:1px solid var(--cw-border); border-radius:8px;
  width:44px; height:44px; align-items:center; justify-content:center; cursor:pointer;
}
.primary-nav-toggle svg{ width:22px; height:22px; }

.primary-navigation ul{ list-style:none; display:flex; gap:6px; margin:0; padding:0; }
.primary-navigation a{
  display:block; padding:10px 14px; border-radius:8px; color:var(--cw-text); font-weight:600; font-size:.96rem;
}
.primary-navigation a:hover{ background:var(--cw-bg-alt); text-decoration:none; color:var(--cw-primary); }
.header-cta{ display:flex; align-items:center; gap:10px; }

@media (max-width: 880px){
  .primary-nav-toggle{ display:flex; }
  .primary-navigation{
    display:none; position:absolute; left:0; right:0; top:100%;
    background:#fff; border-bottom:1px solid var(--cw-border); box-shadow:var(--cw-shadow);
  }
  .primary-navigation.is-open{ display:block; }
  .primary-navigation ul{ flex-direction:column; padding:10px 20px 18px; gap:2px; }
  .primary-navigation a{ padding:12px 10px; }
  .header-cta .btn-primary{ display:none; }
}

/* =========================================================
   4. HERO
========================================================= */
.hero{ padding:64px 0 48px; background:linear-gradient(180deg,var(--cw-primary-light) 0%, #fff 100%); }
.hero-inner{ max-width:760px; margin:0 auto; text-align:center; }
.hero p.lead{ font-size:1.1rem; color:var(--cw-text-muted); max-width:620px; margin:0 auto 28px; }

.calc-search{ max-width:560px; margin:0 auto 18px; position:relative; }
.calc-search input[type="search"]{
  width:100%; padding:16px 50px 16px 18px; border:1px solid var(--cw-border); border-radius:12px;
  font-size:1.02rem; box-shadow:var(--cw-shadow-sm); background:#fff;
}
.calc-search input[type="search"]:focus{ border-color:var(--cw-primary); }
.calc-search-icon{ position:absolute; right:16px; top:50%; transform:translateY(-50%); color:var(--cw-text-muted); pointer-events:none; }
.calc-search-results{
  position:absolute; left:0; right:0; top:calc(100% + 6px); background:#fff; border:1px solid var(--cw-border);
  border-radius:10px; box-shadow:var(--cw-shadow); text-align:left; max-height:340px; overflow:auto; z-index:60; display:none;
}
.calc-search-results.is-visible{ display:block; }
.calc-search-results a{ display:flex; justify-content:space-between; gap:10px; padding:12px 16px; color:var(--cw-text); border-bottom:1px solid var(--cw-border); }
.calc-search-results a:last-child{ border-bottom:none; }
.calc-search-results a:hover{ background:var(--cw-bg-alt); text-decoration:none; }
.calc-search-results .cat-tag{ font-size:.78rem; color:var(--cw-text-muted); background:var(--cw-bg-alt); padding:2px 8px; border-radius:20px; white-space:nowrap; }
.calc-search-empty{ padding:14px 16px; color:var(--cw-text-muted); font-size:.92rem; }

.hero-actions{ margin-top:8px; }

/* =========================================================
   5. CARDS: calculators & categories
========================================================= */
.grid{ display:grid; gap:20px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
@media (max-width:960px){ .grid-3, .grid-4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:600px){ .grid-3, .grid-4{ grid-template-columns:1fr; } }

.calc-card{
  background:#fff; border:1px solid var(--cw-border); border-radius:var(--cw-radius);
  padding:20px; display:flex; flex-direction:column; gap:10px; box-shadow:var(--cw-shadow-sm);
  transition:box-shadow .15s ease, transform .15s ease;
}
.calc-card:hover{ box-shadow:var(--cw-shadow); transform:translateY(-2px); }
.calc-card .cat-tag{
  align-self:flex-start; font-size:.75rem; font-weight:700; letter-spacing:.02em; text-transform:uppercase;
  color:var(--cw-primary); background:var(--cw-primary-light); padding:4px 10px; border-radius:20px;
}
.calc-card h3{ margin:0; font-size:1.08rem; }
.calc-card h3 a{ color:var(--cw-text); }
.calc-card p{ color:var(--cw-text-muted); font-size:.94rem; margin:0; flex:1; }
.calc-card .btn{ align-self:flex-start; padding:9px 16px; font-size:.92rem; }

.category-card{
  background:#fff; border:1px solid var(--cw-border); border-radius:var(--cw-radius); padding:26px 22px;
  box-shadow:var(--cw-shadow-sm); display:flex; flex-direction:column; gap:8px;
}
.category-card .cat-icon{
  width:46px; height:46px; border-radius:10px; background:var(--cw-primary-light); color:var(--cw-primary);
  display:flex; align-items:center; justify-content:center; font-weight:800; font-size:1.2rem; margin-bottom:6px;
}
.category-card p{ color:var(--cw-text-muted); font-size:.94rem; }
.category-card a.card-link{ font-weight:700; font-size:.92rem; }

/* Feature list ("Why Calculate Wiki") */
.feature{ text-align:center; padding:10px; }
.feature .feature-icon{
  width:52px; height:52px; border-radius:50%; background:var(--cw-primary-light); color:var(--cw-primary);
  display:flex; align-items:center; justify-content:center; margin:0 auto 14px; font-size:1.4rem; font-weight:800;
}
.feature h3{ font-size:1.05rem; }
.feature p{ color:var(--cw-text-muted); font-size:.92rem; }

/* How it works steps */
.steps{ counter-reset:step; }
.step{ display:flex; gap:16px; align-items:flex-start; padding:14px 0; }
.step .step-num{
  counter-increment:step; flex:none; width:38px; height:38px; border-radius:50%; background:var(--cw-primary);
  color:#fff; display:flex; align-items:center; justify-content:center; font-weight:800;
}
.step .step-num::before{ content:counter(step); }
.step h3{ margin:0 0 4px; font-size:1.02rem; }
.step p{ margin:0; color:var(--cw-text-muted); font-size:.92rem; }

/* FAQ (accordion, no JS dependency required — uses <details>) */
.faq-list details{
  border:1px solid var(--cw-border); border-radius:var(--cw-radius-sm); padding:14px 18px; margin-bottom:10px; background:#fff;
}
.faq-list summary{ cursor:pointer; font-weight:700; list-style:none; display:flex; justify-content:space-between; align-items:center; gap:10px; }
.faq-list summary::-webkit-details-marker{ display:none; }
.faq-list summary::after{ content:"+"; font-size:1.3rem; color:var(--cw-primary); flex:none; }
.faq-list details[open] summary::after{ content:"–"; }
.faq-list .faq-answer{ margin-top:10px; color:var(--cw-text-muted); }

/* =========================================================
   6. DIRECTORY / CATEGORY PAGES
========================================================= */
.directory-toolbar{
  display:flex; flex-wrap:wrap; gap:14px; align-items:center; justify-content:space-between;
  background:var(--cw-bg-alt); border:1px solid var(--cw-border); border-radius:var(--cw-radius); padding:18px; margin-bottom:28px;
}
.filter-pills{ display:flex; flex-wrap:wrap; gap:8px; }
.filter-pill{
  padding:8px 14px; border-radius:20px; background:#fff; border:1px solid var(--cw-border); font-size:.88rem; font-weight:600;
  color:var(--cw-text); cursor:pointer;
}
.filter-pill.is-active, .filter-pill:hover{ background:var(--cw-primary); border-color:var(--cw-primary); color:#fff; }
.no-results-msg{ display:none; text-align:center; color:var(--cw-text-muted); padding:40px 0; }

.breadcrumbs{ font-size:.86rem; color:var(--cw-text-muted); margin-bottom:16px; }
.breadcrumbs a{ color:var(--cw-text-muted); }
.breadcrumbs a:hover{ color:var(--cw-primary); }

.related-calcs{ display:flex; flex-wrap:wrap; gap:10px; }
.related-calcs a{
  padding:9px 14px; border:1px solid var(--cw-border); border-radius:20px; font-size:.9rem; font-weight:600; color:var(--cw-text);
}
.related-calcs a:hover{ border-color:var(--cw-primary); color:var(--cw-primary); text-decoration:none; }

/* =========================================================
   7. CALCULATOR APP (the actual interactive widget)
========================================================= */
.calc-app{
  background:#fff; border:1px solid var(--cw-border); border-radius:var(--cw-radius);
  box-shadow:var(--cw-shadow); padding:26px; margin:24px 0 34px;
}
.calc-app-header{ display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:18px; flex-wrap:wrap; }
.calc-app-header h2{ margin:0; font-size:1.15rem; }
.calc-badge{ font-size:.76rem; font-weight:700; color:var(--cw-primary); background:var(--cw-primary-light); padding:4px 10px; border-radius:20px; }

.calc-form{ display:grid; grid-template-columns:repeat(2,1fr); gap:16px 20px; }
.calc-form.cols-1{ grid-template-columns:1fr; }
@media (max-width:600px){ .calc-form{ grid-template-columns:1fr; } }

.calc-field{ display:flex; flex-direction:column; gap:6px; }
.calc-field.span-2{ grid-column:1 / -1; }
.calc-field label{ font-weight:600; font-size:.92rem; }
.calc-field .field-hint{ font-size:.8rem; color:var(--cw-text-muted); }
.calc-field input[type="text"],
.calc-field input[type="number"],
.calc-field input[type="date"],
.calc-field input[type="time"],
.calc-field select,
.calc-field textarea{
  padding:12px 14px; border:1px solid var(--cw-border); border-radius:8px; background:#fff; min-height:48px; width:100%;
}
.calc-field input:focus, .calc-field select:focus{ border-color:var(--cw-primary); }
.calc-field .input-with-unit{ position:relative; }
.calc-field .input-with-unit input{ padding-right:58px; }
.calc-field .input-with-unit .unit-label{
  position:absolute; right:12px; top:50%; transform:translateY(-50%); color:var(--cw-text-muted); font-size:.85rem; font-weight:600;
}
.calc-error{ color:var(--cw-error); font-size:.82rem; min-height:1.1em; }

.calc-actions{ display:flex; gap:12px; margin-top:20px; flex-wrap:wrap; }
.calc-actions .btn{ min-width:140px; }

.calc-result{
  margin-top:22px; padding:20px; border-radius:var(--cw-radius-sm); background:var(--cw-bg-alt);
  border:1px solid var(--cw-border); display:none;
}
.calc-result.is-visible{ display:block; }
.calc-result .result-headline{ font-size:1.5rem; font-weight:800; color:var(--cw-primary-dark); margin-bottom:6px; }
.calc-result .result-sub{ color:var(--cw-text-muted); font-size:.92rem; margin-bottom:10px; }
.calc-result table{ width:100%; border-collapse:collapse; margin-top:8px; }
.calc-result table td, .calc-result table th{ padding:8px 4px; border-bottom:1px solid var(--cw-border); font-size:.92rem; text-align:left; }
.calc-result table th{ color:var(--cw-text-muted); font-weight:600; }

/* Content sections under calculator */
.calc-content h2{ margin-top:34px; }
.calc-content .formula-box{
  background:var(--cw-bg-alt); border:1px solid var(--cw-border); border-radius:var(--cw-radius-sm);
  padding:16px 18px; font-family:ui-monospace, Menlo, Consolas, monospace; font-size:.95rem; overflow-x:auto;
}
.calc-content table{ width:100%; border-collapse:collapse; margin:16px 0; }
.calc-content table th, .calc-content table td{ border:1px solid var(--cw-border); padding:10px; font-size:.92rem; text-align:left; }
.calc-content table th{ background:var(--cw-bg-alt); }

/* =========================================================
   8. ADS / LAYOUT SLOTS
========================================================= */
.ad-slot{
  border:1px dashed var(--cw-border); border-radius:8px; background:#fbfbfc; color:var(--cw-text-muted);
  font-size:.78rem; text-align:center; padding:14px; margin:26px 0; min-height:90px; display:flex; align-items:center; justify-content:center;
}
.ad-slot::before{ content:"Advertisement"; }
.content-with-sidebar{ display:grid; grid-template-columns:1fr 300px; gap:34px; align-items:start; }
@media (max-width:960px){ .content-with-sidebar{ grid-template-columns:1fr; } }
.sidebar .ad-slot{ position:sticky; top:90px; }

/* =========================================================
   9. FOOTER
========================================================= */
.site-footer{ background:var(--cw-text); color:#cfd8e0; margin-top:60px; }
.footer-inner{ max-width:var(--cw-max-width); margin:0 auto; padding:50px 20px 24px; display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:30px; }
@media (max-width:760px){ .footer-inner{ grid-template-columns:1fr 1fr; } }
.footer-col h4{ color:#fff; font-size:.95rem; margin-bottom:14px; }
.footer-col ul{ list-style:none; padding:0; margin:0; }
.footer-col li{ margin-bottom:9px; }
.footer-col a{ color:#cfd8e0; font-size:.92rem; }
.footer-col a:hover{ color:#fff; }
.footer-brand p{ color:#9fb0bd; font-size:.9rem; max-width:320px; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.12); padding:18px 20px; text-align:center; font-size:.82rem; color:#9fb0bd; }

/* Misc */
.tag-list{ display:flex; flex-wrap:wrap; gap:8px; margin:10px 0 20px; }
.tag-list span{ background:var(--cw-bg-alt); border:1px solid var(--cw-border); border-radius:20px; padding:4px 12px; font-size:.82rem; color:var(--cw-text-muted); }
.entry-content > *:first-child{ margin-top:0; }
.legal-content h2{ margin-top:30px; }