/* ==========================================================================
   PC Matic Guides — Independent Informational Site
   Design system: warm off-white base, charcoal text, restrained blue accent
   ========================================================================== */

:root {
  /* Color */
  --bg: #FFFFFF;
  --bg-soft: #F7F6F3;
  --bg-soft-2: #F1EFEA;
  --text: #1E2328;
  --text-muted: #5B6470;
  --text-faint: #8A929C;
  --accent: #2A4D8F;
  --accent-dark: #1B3563;
  --accent-soft: #E4EAF5;
  --border: #E5E3DD;
  --border-strong: #D6D3CA;
  --success: #1B8A5A;
  --warning: #B5790A;
  --danger: #C4392B;
  --shadow-sm: 0 1px 2px rgba(30, 35, 40, 0.06);
  --shadow-md: 0 4px 16px rgba(30, 35, 40, 0.08);
  --shadow-lg: 0 12px 32px rgba(30, 35, 40, 0.10);

  /* Type */
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Layout */
  --container: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --header-h: 72px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 0.5em; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0 0 1em; color: var(--text-muted); }
button { font-family: inherit; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

/* ---------- Focus states ---------- */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Layout helpers ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }
.section--tight { padding: 48px 0; }
.section-head { max-width: 640px; margin: 0 0 40px; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: 14px;
}
h2.section-title { font-size: clamp(26px, 3vw, 34px); }
.section-desc { font-size: 17px; color: var(--text-muted); }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); color: #fff; }
.btn-secondary { background: #fff; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { background: var(--bg-soft); color: var(--text); }
.btn-ghost { background: transparent; color: var(--accent); padding-left: 4px; padding-right: 4px; }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  color: var(--text);
  flex-shrink: 0;
}
.logo:hover { text-decoration: none; }
.logo-mark {
  width: 34px; height: 34px;
  border-radius: 9px;
  background: linear-gradient(155deg, var(--accent), var(--accent-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 15px; font-weight: 800;
  flex-shrink: 0;
}
.logo-text-sub { display: block; font-size: 11px; font-weight: 500; color: var(--text-faint); letter-spacing: 0.02em; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 14px;
  border-radius: 8px;
  text-decoration: none;
}
.main-nav a:hover { background: var(--bg-soft); }
.main-nav a[aria-current="page"] { color: var(--accent-dark); font-weight: 700; }

.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }

.hamburger {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  width: 44px; height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 20px; height: 2px;
  background: var(--text);
  position: relative;
}
.hamburger span::before, .hamburger span::after {
  content: "";
  position: absolute;
  left: 0; width: 20px; height: 2px;
  background: var(--text);
  transition: transform 0.2s ease;
}
.hamburger span::before { top: -6px; }
.hamburger span::after { top: 6px; }
.hamburger[aria-expanded="true"] span { background: transparent; }
.hamburger[aria-expanded="true"] span::before { transform: translateY(6px) rotate(45deg); }
.hamburger[aria-expanded="true"] span::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 940px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 20px 20px;
    gap: 2px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  .main-nav.is-open { opacity: 1; transform: translateY(0); visibility: visible; }
  .main-nav a { padding: 12px 10px; border-bottom: 1px solid var(--bg-soft); border-radius: 4px; }
  .header-cta-desktop { display: none; }
  .hamburger { display: flex; }
}

/* ---------- Disclosure banner ---------- */
.disclosure {
  background: var(--accent-soft);
  border: 1px solid #C3D0E8;
  color: var(--accent-dark);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.disclosure strong { color: var(--accent-dark); }
.disclosure-icon { flex-shrink: 0; margin-top: 2px; }
.disclosure-bar {
  background: var(--bg-soft-2);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
  font-size: 13.5px;
  color: var(--text-muted);
  text-align: center;
}
.disclosure-bar .container { padding: 0 24px; }

/* ---------- Hero ---------- */
.hero { padding: 56px 0 72px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}
.hero-eyebrow { margin-bottom: 18px; }
.hero h1 {
  font-size: clamp(34px, 4.4vw, 52px);
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 28px;
}
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 24px; }

/* Banner / hero visual placeholder slot */
.banner-slot {
  position: relative;
  width: 100%;
  
  max-width: 560px;
  margin-left: auto;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border-strong);
  background:
    repeating-linear-gradient(135deg, var(--bg-soft) 0 12px, #FFFFFF 12px 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.banner-slot-inner {
  text-align: center;
  padding: 32px;
  color: var(--text-faint);
}
.banner-slot-inner svg { width: 64px; height: 64px; margin: 0 auto 14px; color: var(--accent); }
.banner-slot-inner p { margin: 0; font-size: 13.5px; color: var(--text-faint); line-height: 1.5; }
.banner-slot-inner strong { display: block; color: var(--text-muted); font-size: 14px; margin-bottom: 4px; }
/* To replace this placeholder with a real banner image, remove .banner-slot-inner
   and add: <img src="images/your-banner.png" alt="Descriptive alt text" class="banner-img"> */
.banner-img { width: 100%; height: 100%; object-fit: contain; border-radius: calc(var(--radius-lg) - 2px); }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .banner-slot { max-width: 100%; margin-left: 0; order: 2; }
}

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.18s ease, transform 0.18s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-dark);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.card h3 { font-size: 19px; margin-bottom: 8px; }
.card p { font-size: 15px; margin-bottom: 14px; }
.card-link { font-weight: 600; font-size: 14.5px; }

.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--bg-soft-2);
  color: var(--text-muted);
  margin-right: 6px;
}
.badge-blue { background: var(--accent-soft); color: var(--accent-dark); }

/* Guide card meta row */
.guide-meta { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }

/* ---------- Steps ---------- */
.steps { display: grid; gap: 18px; }
.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px 22px;
}
.step-num {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.step h4 { margin-bottom: 4px; font-size: 16px; }
.step p { margin: 0; font-size: 14.5px; }

/* ---------- FAQ ---------- */
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 4px;
  font-weight: 600;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--accent);
  flex-shrink: 0;
}
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { padding: 0 4px 18px; margin: 0; }

/* ---------- Troubleshooting search ---------- */
.ts-search-wrap { margin-bottom: 36px; }
.ts-search {
  position: relative;
  max-width: 520px;
}
.ts-search input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  border: 1px solid var(--border-strong);
  border-radius: 100px;
  font-size: 16px;
  background: #fff url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" fill="none" stroke="%235B6470" stroke-width="2"><circle cx="7" cy="7" r="6"/><line x1="11.2" y1="11.2" x2="16" y2="16"/></svg>') 16px center no-repeat;
}
.ts-search input:focus { outline: 3px solid var(--accent); outline-offset: 2px; }
.ts-count { font-size: 14px; color: var(--text-faint); margin-top: 8px; }
.ts-empty { display: none; padding: 32px 0; color: var(--text-faint); text-align: center; }
.ts-empty.is-visible { display: block; }
.ts-item[hidden] { display: none; }

/* ---------- Table of contents / breadcrumbs ---------- */
.breadcrumbs {
  font-size: 13.5px;
  color: var(--text-faint);
  padding: 18px 0 0;
}
.breadcrumbs a { color: var(--text-faint); }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs span[aria-current] { color: var(--text-muted); }

/* ---------- Article ---------- */
.article-head { max-width: 760px; margin: 0 auto; text-align: center; padding: 40px 0 8px; }
.article-meta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; color: var(--text-faint); font-size: 14px; margin-top: 12px; }
.article-body { max-width: 720px; margin: 0 auto; }
.article-body h2 { font-size: 24px; margin-top: 2.2em; }
.article-body h3 { font-size: 19px; margin-top: 1.6em; }
.article-body p, .article-body li { color: var(--text-muted); font-size: 16.5px; }
.article-body ul, .article-body ol { padding-left: 1.4em; margin-bottom: 1em; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body blockquote {
  margin: 1.6em 0;
  padding: 4px 20px;
  border-left: 3px solid var(--accent);
  color: var(--text-muted);
  font-style: italic;
}

/* ---------- Forms ---------- */
.form-field { margin-bottom: 20px; }
.form-field label { display: block; font-weight: 600; font-size: 14.5px; margin-bottom: 6px; }
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 15px;
  background: #fff;
  color: var(--text);
}
.form-field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 13.5px; color: var(--text-faint); margin-top: 4px; }
.form-card { max-width: 620px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-sm); }
.form-status { margin-top: 16px; font-size: 14.5px; padding: 12px 14px; border-radius: var(--radius-sm); display: none; }
.form-status.is-success { display: block; background: #E9F6EF; color: var(--success); }
.form-status.is-error { display: block; background: #FBEAE8; color: var(--danger); }

/* ---------- CTA band ---------- */
.cta-band {
  background: var(--text);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-band h2 { color: #fff; margin-bottom: 6px; }
.cta-band p { color: #C7CBD1; margin: 0; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-soft); border-top: 1px solid var(--border); padding: 56px 0 28px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(4, 1fr); gap: 32px; margin-bottom: 40px; }
.footer-col h4 { font-size: 14px; margin-bottom: 14px; color: var(--text); }
.footer-col li { margin-bottom: 9px; }
.footer-col a { color: var(--text-muted); font-size: 14.5px; }
.footer-col a:hover { color: var(--accent); }
.footer-brand p { font-size: 14px; max-width: 320px; }
.footer-legal {
  border-top: 1px solid var(--border-strong);
  padding-top: 24px;
  font-size: 13px;
  color: var(--text-faint);
  line-height: 1.7;
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; }
}

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