/* =========================================================
   ProDeviceTest — Common Design System
   Shared across every page: variables, base elements,
   header/nav, footer, and reusable content components
   (tables, steps, FAQ, dividers). Page-specific tester UI
   and illustrations stay in each page's own <style> block.
   ========================================================= */

:root{
  --paper:#F6F5F0;
  --ink:#1C1E1B;
  --ink-soft:#585650;
  --line:#DBD8CC;
  --panel:#FFFFFF;
  --signal:#1F6F4A;
  --signal-dark:#175539;
  --signal-soft:#E1EFE6;
  --accent-blue:#2A5CAA;
  --warn:#AE3B2C;
  --warn-soft:#FBEAE7;
  --radius:6px;
  --font-display:'Archivo',sans-serif;
  --font-body:'Source Sans 3',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
}

*{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;}
img{max-width:100%;display:block;}
a{color:var(--accent-blue);text-decoration-thickness:1px;text-underline-offset:2px;}
a:hover{color:var(--signal-dark);}
:focus-visible{outline:3px solid var(--accent-blue);outline-offset:2px;}

.wrap{max-width:1120px;margin:0 auto;padding:0 24px;}
.prose{max-width:720px;}

/* ---------- Header / nav ---------- */
header.site{border-bottom:1px solid var(--line);background:var(--paper);position:sticky;top:0;z-index:40;}
.site-bar{display:flex;align-items:center;justify-content:space-between;padding:16px 0;}
.logo{font-family:var(--font-display);font-weight:800;font-size:1.25rem;letter-spacing:-0.01em;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:8px;}
.logo-mark{width:32px;height:32px;border-radius:8px;display:block;flex-shrink:0;}
nav.primary{display:flex;align-items:center;gap:2px;}
nav.primary > .nav-all-tools{color:var(--ink-soft);text-decoration:none;font-weight:600;font-size:0.86rem;padding:8px 10px;border-radius:var(--radius);white-space:nowrap;}
nav.primary > .nav-all-tools:hover{color:var(--ink);background:var(--panel);}
nav.primary > .nav-all-tools[aria-current="page"]{color:var(--ink);background:var(--signal-soft);}

/* Category group + dropdown (desktop) */
.nav-group{position:relative;}
.nav-cat-toggle{
  display:flex;align-items:center;gap:5px;background:none;border:none;cursor:pointer;
  color:var(--ink-soft);font-family:var(--font-body);font-weight:600;font-size:0.86rem;
  padding:8px 10px;border-radius:var(--radius);white-space:nowrap;
}
.nav-cat-toggle:hover, .nav-group.open .nav-cat-toggle{color:var(--ink);background:var(--panel);}
.nav-cat-toggle[aria-current="page"]{color:var(--ink);background:var(--signal-soft);}
.nav-caret{flex-shrink:0;transition:transform .15s ease;}
.nav-group.open .nav-caret{transform:rotate(180deg);}

.nav-dropdown{
  position:absolute;top:100%;left:0;margin-top:6px;min-width:220px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:0 8px 24px rgba(0,0,0,.10);padding:6px;
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .15s ease, transform .15s ease, visibility .15s;
  z-index:50;
}
.nav-group.open .nav-dropdown{opacity:1;visibility:visible;transform:translateY(0);}
.nav-dropdown a{
  color:var(--ink-soft);text-decoration:none;font-weight:500;font-size:0.9rem;
  padding:8px 10px;border-radius:4px;white-space:nowrap;
}
.nav-dropdown a:hover{color:var(--ink);background:var(--paper);}
.nav-dropdown a[aria-current="page"]{color:var(--signal-dark);background:var(--signal-soft);font-weight:700;}
.nav-dropdown-heading{
  font-family:var(--font-display);font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--line);margin-bottom:4px;padding-bottom:10px;
}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:var(--radius);width:42px;height:42px;cursor:pointer;position:relative;flex-shrink:0;}
.menu-toggle span, .menu-toggle::before, .menu-toggle::after{content:"";position:absolute;left:10px;right:10px;height:2px;background:var(--ink);transition:transform .2s ease, opacity .2s ease;}
.menu-toggle::before{top:14px;}
.menu-toggle span{top:20px;}
.menu-toggle::after{top:26px;}
.menu-toggle[aria-expanded="true"]::before{transform:translateY(6px) rotate(45deg);}
.menu-toggle[aria-expanded="true"]::after{transform:translateY(-6px) rotate(-45deg);}
.menu-toggle[aria-expanded="true"] span{opacity:0;}

/* ---------- Breadcrumb ---------- */
.breadcrumb-row{padding:12px 0 0;}
.breadcrumb{font-family:var(--font-mono);font-size:.78rem;color:var(--ink-soft);margin:0;display:flex;flex-wrap:wrap;gap:6px;align-items:center;}
.breadcrumb a{color:var(--ink-soft);text-decoration:none;}
.breadcrumb a:hover{color:var(--signal-dark);text-decoration:underline;}
.breadcrumb .sep{color:var(--line);}
.breadcrumb .current{color:var(--ink);font-weight:600;}

/* ---------- Hero ---------- */
.hero{padding:52px 0 28px;}
h1{font-family:var(--font-display);font-size:clamp(1.8rem, 4vw, 2.7rem);font-weight:800;letter-spacing:-0.015em;margin:0 0 14px;line-height:1.1;}
.hero p.lead{font-size:1.15rem;color:var(--ink-soft);max-width:640px;margin:0 0 6px;}
.hero .trust{font-family:var(--font-mono);font-size:0.82rem;color:var(--signal-dark);margin-top:16px;}
.hero .last-updated{font-family:var(--font-mono);font-size:0.74rem;color:var(--ink-soft);margin-top:8px;}

/* ---------- Tester shell ---------- */
.tester{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 22px 26px;margin:18px 0 48px;box-shadow:0 1px 0 var(--line);}

/* ---------- Table of contents ---------- */
.toc-wrap{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin:0 0 40px;}
.toc-wrap p.toc-label{font-family:var(--font-mono);font-size:.78rem;color:var(--signal-dark);text-transform:uppercase;letter-spacing:.06em;margin:0 0 10px;}
.toc-wrap ol{list-style:none;padding:0;margin:0;columns:2;column-gap:24px;}
.toc-wrap li{margin-bottom:6px;font-size:.92rem;}
.toc-wrap a{color:var(--ink);text-decoration:none;}
.toc-wrap a:hover{color:var(--signal-dark);text-decoration:underline;}
@media (max-width:560px){ .toc-wrap ol{columns:1;} }

/* ---------- Content sections ---------- */
section.content{padding:8px 0 44px;}
section.content h2{font-family:var(--font-display);font-size:1.5rem;font-weight:700;letter-spacing:-0.01em;margin:0 0 14px;}
section.content h3{font-family:var(--font-display);font-size:1.08rem;font-weight:700;margin:18px 0 8px;}
section.content h3:first-of-type{margin-top:0;}
section.content p{margin:0 0 16px;color:var(--ink);}
section.content ul, section.content ol{padding-left:1.3em;margin:0 0 16px;}
section.content li{margin-bottom:8px;}
section.content code{font-family:var(--font-mono);font-size:.88em;background:var(--paper);border:1px solid var(--line);border-radius:4px;padding:1px 6px;}
.divider{border:none;border-top:1px solid var(--line);margin:0 0 40px;}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;margin:0 0 8px;border:1px solid var(--line);border-radius:10px;}
table{width:100%;border-collapse:collapse;font-size:.95rem;min-width:520px;}
thead th{text-align:left;font-family:var(--font-display);font-weight:700;font-size:.85rem;background:var(--paper);color:var(--ink);padding:12px 14px;border-bottom:1px solid var(--line);white-space:nowrap;}
tbody td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink-soft);vertical-align:top;}
tbody tr:last-child td{border-bottom:none;}
tbody tr:nth-child(even){background:#FBFAF6;}
tbody td:first-child{color:var(--ink);font-weight:600;}

@media (max-width:640px){
  .table-wrap{overflow-x:visible;border:none;}
  table{min-width:0;}
  thead{display:none;}
  table, tbody, tr, td{display:block;width:100%;}
  tr{background:var(--panel);border:1px solid var(--line);border-radius:10px;margin-bottom:12px;padding:4px 0;}
  tbody tr:nth-child(even){background:var(--panel);}
  td{display:flex;gap:12px;justify-content:space-between;align-items:baseline;border-bottom:1px solid var(--line);padding:10px 14px;text-align:right;}
  td:last-child{border-bottom:none;}
  td::before{content:attr(data-label);font-family:var(--font-display);font-weight:700;font-size:.78rem;color:var(--ink);text-align:left;flex-shrink:0;width:38%;}
}

/* ---------- Numbered steps ---------- */
.steps{list-style:none;padding:0;counter-reset:step;display:grid;gap:14px;}
.steps li{counter-increment:step;display:flex;gap:14px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 18px;}
.steps li::before{content:counter(step);font-family:var(--font-mono);font-weight:600;font-size:.9rem;background:var(--signal-soft);color:var(--signal-dark);width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.steps li div p{margin:0;}
.steps li strong{display:block;font-family:var(--font-display);font-size:1.02rem;margin-bottom:2px;}

/* ---------- FAQ accordion ---------- */
.faq details{border-bottom:1px solid var(--line);padding:16px 0;}
.faq summary{font-family:var(--font-display);font-weight:700;font-size:1.03rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{content:"+";font-family:var(--font-mono);font-weight:600;color:var(--signal-dark);}
.faq details[open] summary::after{content:"–";}
.faq details p{margin:12px 0 0;color:var(--ink-soft);}

/* ---------- Ad slots ----------
   min-height reserves the space before the ad loads, so nothing on
   the page shifts around it (protects Cumulative Layout Shift / CLS).
   The reserved height scales up with viewport width since Google's
   auto-responsive ad format tends to pick taller units on wider
   screens — matching that keeps the reservation accurate instead of
   under- or over-booking space at any given breakpoint. */
.ad-slot{
  width:100%;max-width:1120px;margin:0 auto 28px;padding:0 24px;
  min-height:100px;display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.ad-slot .adsbygoogle{display:block;width:100%;}
@media (min-width:600px){ .ad-slot{min-height:130px;} }
@media (min-width:900px){ .ad-slot{min-height:250px;} }

/* ---------- Cookie consent banner ---------- */
.consent-banner{
  position:fixed;left:0;right:0;bottom:0;z-index:100;
  background:var(--panel);border-top:1px solid var(--line);
  box-shadow:0 -4px 20px rgba(0,0,0,.10);
}
.consent-inner{max-width:1120px;margin:0 auto;padding:18px 24px;}
.consent-message{margin:0 0 14px;font-size:.92rem;color:var(--ink-soft);line-height:1.5;}
.consent-message a{color:var(--accent-blue);}
.consent-categories{display:flex;flex-direction:column;gap:14px;margin:0 0 16px;padding:14px 0 2px;border-top:1px dashed var(--line);}
.consent-cat{display:flex;gap:14px;align-items:flex-start;}
.consent-cat strong{font-family:var(--font-display);font-size:.92rem;color:var(--ink);}
.consent-cat p{margin:2px 0 0;font-size:.85rem;color:var(--ink-soft);}
.consent-toggle{position:relative;display:inline-block;width:38px;height:22px;flex-shrink:0;margin-top:2px;}
.consent-toggle input{opacity:0;width:0;height:0;}
.consent-toggle span{
  position:absolute;inset:0;background:var(--line);border-radius:22px;
  cursor:pointer;transition:background .15s ease;
}
.consent-toggle span::before{
  content:"";position:absolute;width:16px;height:16px;left:3px;top:3px;
  background:#fff;border-radius:50%;transition:transform .15s ease;
  box-shadow:0 1px 2px rgba(0,0,0,.2);
}
.consent-toggle input:checked + span{background:var(--signal);}
.consent-toggle input:checked + span::before{transform:translateX(16px);}
.consent-toggle.disabled span{cursor:not-allowed;opacity:.6;}
.consent-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;}
.consent-btn{
  font-family:var(--font-body);font-weight:700;font-size:.9rem;border-radius:var(--radius);
  padding:10px 18px;cursor:pointer;white-space:nowrap;
}
.consent-btn.primary{background:var(--ink);color:#fff;border:none;}
.consent-btn.primary:hover{background:var(--signal-dark);}
.consent-btn.ghost{background:none;border:1px solid var(--line);color:var(--ink-soft);}
.consent-btn.ghost:hover{border-color:var(--ink-soft);color:var(--ink);}
@media (max-width:640px){
  .consent-actions{flex-direction:column;}
  .consent-btn{width:100%;text-align:center;}
}

/* ---------- Social share row ---------- */
.share-row{display:flex;align-items:center;gap:8px;margin-top:14px;}
.share-label{font-family:var(--font-display);font-weight:700;font-size:.82rem;color:var(--ink-soft);margin-right:2px;}
.share-btn{
  display:flex;align-items:center;justify-content:center;width:32px;height:32px;
  border-radius:50%;background:var(--panel);border:1px solid var(--line);color:var(--ink-soft);
  text-decoration:none;cursor:pointer;transition:background .12s ease, color .12s ease, border-color .12s ease;
}
.share-btn:hover{background:var(--signal-soft);border-color:#B7DDC4;color:var(--signal-dark);}
.share-copy{font-family:inherit;}

/* ---------- Footer ---------- */
footer.site{border-top:1px solid var(--line);padding:32px 0 46px;}
.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;align-items:center;}
.footer-links{display:flex;gap:20px;flex-wrap:wrap;}
.footer-links a{color:var(--ink-soft);font-size:.92rem;text-decoration:none;}
.footer-links a:hover{color:var(--ink);}
.footer-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.lang-switch select{font-family:var(--font-body);font-size:.85rem;color:var(--ink);background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:6px 10px;cursor:pointer;}
.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;}
.copyright{font-size:.85rem;color:var(--ink-soft);font-family:var(--font-mono);}

/* ---------- Category tool-grid (shared by homepage and category pages) ---------- */
.category-section{padding:8px 0 46px;}
.category-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
.category-head h2{font-family:var(--font-display);font-size:1.5rem;font-weight:700;letter-spacing:-0.01em;margin:0;}
.category-desc{color:var(--ink-soft);margin:0 0 20px;max-width:640px;}
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
@media (max-width:900px){ .tool-grid{grid-template-columns:repeat(2,1fr);} }
@media (max-width:560px){ .tool-grid{grid-template-columns:1fr;} }
.tool-card{
  display:flex;gap:14px;align-items:flex-start;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 16px;
  text-decoration:none;color:var(--ink);box-shadow:0 1px 0 var(--line);transition:transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.tool-card:hover{transform:translateY(-2px);box-shadow:0 6px 14px rgba(0,0,0,.08);border-color:var(--signal);color:var(--ink);}
.tool-card .icon-badge{flex-shrink:0;}
.tool-card .tool-name{font-family:var(--font-display);font-weight:700;font-size:1rem;margin:0 0 4px;}
.tool-card .tool-desc{font-size:.87rem;color:var(--ink-soft);margin:0;line-height:1.5;}

.icon-badge{
  width:44px;height:44px;border-radius:11px;
  background:linear-gradient(145deg,#3a3a37,#1C1E1B);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
  box-shadow:0 3px 8px rgba(0,0,0,.22), inset 0 1px 0 rgba(255,255,255,.12);
  transition:background .15s ease, transform .15s ease;
}
.icon-badge svg{width:23px;height:23px;stroke:#EDE9D8;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;}
.tool-card:hover .icon-badge, .popular-card:hover .icon-badge{
  background:linear-gradient(145deg,#268257,#1F6F4A);transform:scale(1.06) rotate(-3deg);
}

/* ---------- Mobile nav (breakpoint set generously; nav item count is config-driven so this stays valid as tools are added) ---------- */
@media (max-width:880px){
  .menu-toggle{display:block;}
  nav.primary{
    position:fixed;top:73px;left:0;right:0;bottom:0;background:var(--paper);
    flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 24px;
    transform:translateY(-8px);opacity:0;pointer-events:none;
    transition:opacity .18s ease, transform .18s ease;overflow-y:auto;
  }
  nav.primary.open{opacity:1;pointer-events:auto;transform:translateY(0);}
  nav.primary > .nav-all-tools{padding:14px 0;border-bottom:1px solid var(--line);font-size:1.05rem;border-radius:0;}

  /* Turn each category into an accordion section instead of a floating dropdown */
  .nav-group{border-bottom:1px solid var(--line);}
  .nav-cat-toggle{
    width:100%;justify-content:space-between;padding:14px 0;font-size:1.05rem;border-radius:0;background:none !important;
  }
  .nav-dropdown{
    position:static;opacity:1;visibility:visible;transform:none;transition:none;
    box-shadow:none;border:none;background:none;padding:0 0 10px;margin-top:0;
    display:none;min-width:0;
  }
  .nav-group.open .nav-dropdown{display:flex;}
  .nav-dropdown-heading{border-bottom:none;padding:8px 0 8px 14px;margin-bottom:0;order:-1;}
  .nav-dropdown a{padding:10px 0 10px 14px;font-size:0.98rem;}
}