/* =========================================================
   mygurd — Editorial Technology & Security Publication
   Design tokens (distinct from prior builds)
   - Ink:        #1B1F27  (graphite charcoal — headlines, header/footer)
   - Ink Soft:   #2B313D
   - Signal:     #C6941F  (warm gold — links, accents, focus, "guard" badge color)
   - Signal Deep:#9C7112
   - Paper:      #F7F4EC  (warm parchment background)
   - Paper Raised:#FFFFFF
   - Line:       #E6E0D2
   - Ash:        #63636B
   - Text:       #22242B
   - Sage(tag):  #4B7A63  (privacy accent)
   - Rust(tag):  #B0562E  (online-safety accent)
   - Slate(tag): #4A5568  (software accent)
   Dark mode overrides via [data-theme="dark"]
   ========================================================= */

:root {
  --ink: #1B1F27;
  --ink-soft: #2B313D;
  --signal: #C6941F;
  --signal-deep: #9C7112;
  --paper: #F7F4EC;
  --paper-raised: #FFFFFF;
  --line: #E6E0D2;
  --ash: #63636B;
  --text: #22242B;
  --sage: #4B7A63;
  --rust: #B0562E;
  --slate: #4A5568;
  --danger: #A8402C;
  --header-bg: var(--paper-raised);
  --hero-grad-1: #1B1F27;
  --hero-grad-2: #2B313D;

  --font-display: -apple-system, "Segoe UI Semibold", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --maxw: 1180px;
  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(27,31,39,0.07);
  --shadow-md: 0 10px 26px rgba(27,31,39,0.10);
}

[data-theme="dark"] {
  --ink: #F3EFE3;
  --ink-soft: #D8D2C0;
  --signal: #E3B44B;
  --signal-deep: #F0C666;
  --paper: #14161C;
  --paper-raised: #1D2028;
  --line: #2E323C;
  --ash: #9A9AA4;
  --text: #ECE9DF;
  --header-bg: #1D2028;
  --hero-grad-1: #0C0D11;
  --hero-grad-2: #181A22;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--text);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.15s ease, color 0.15s ease;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--signal-deep); text-decoration: none; }
[data-theme="dark"] a { color: var(--signal); }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid var(--signal);
  outline-offset: 2px;
  border-radius: 4px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
}
h1 { font-size: clamp(2rem, 1.55rem + 1.9vw, 3.15rem); }
h2 { font-size: clamp(1.45rem, 1.25rem + 1vw, 2rem); }
h3 { font-size: 1.28rem; }
h4 { font-size: 1.05rem; }

p { margin: 0 0 1.15em; }
.lede { font-size: 1.18rem; color: var(--ash); line-height: 1.55; }

ul, ol { padding-left: 1.35em; }
li { margin-bottom: 0.5em; }

.skip-link {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: var(--paper);
  padding: 10px 18px; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* =============== Header =============== */
.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 100;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.32rem;
  color: var(--ink);
}
.brand:hover { text-decoration: none; }
.brand-mark { width: 36px; height: 36px; flex-shrink: 0; }
.brand-name b { color: var(--signal-deep); }
[data-theme="dark"] .brand-name b { color: var(--signal); }

.main-nav { display: none; }
.main-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.main-nav a {
  color: var(--ink-soft); font-weight: 600; font-size: 0.95rem;
  padding: 10px 12px; border-radius: 8px; display: block;
}
.main-nav a:hover { background: rgba(198,148,31,0.12); text-decoration: none; color: var(--signal-deep); }
.main-nav a[aria-current="page"] { color: var(--signal-deep); background: rgba(198,148,31,0.14); }
[data-theme="dark"] .main-nav a[aria-current="page"] { color: var(--signal); }

.header-controls { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  background: none; border: 1px solid var(--line); border-radius: 8px;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--ink);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-toggle {
  background: none; border: 1px solid var(--line); border-radius: 8px;
  width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--ink);
}
.nav-toggle svg { width: 21px; height: 21px; }

.mobile-nav {
  display: none; flex-direction: column; border-top: 1px solid var(--line);
  background: var(--header-bg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 14px 24px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-weight: 600;
}

@media (min-width: 900px) {
  .main-nav { display: block; }
  .nav-toggle { display: none; }
  .mobile-nav { display: none !important; }
}

/* =============== Buttons / small UI =============== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 0.95rem;
  padding: 12px 20px; border-radius: 9px;
  border: 2px solid var(--ink);
  color: var(--ink); background: transparent;
  cursor: pointer;
}
.btn:hover { background: var(--ink); color: var(--paper); text-decoration: none; }
.btn-solid { background: var(--signal-deep); border-color: var(--signal-deep); color: #fff; }
.btn-solid:hover { background: var(--ink); border-color: var(--ink); color: var(--paper); }
[data-theme="dark"] .btn-solid { color: #1B1F27; }
.btn-ghost { border-color: var(--line); color: var(--ink-soft); font-size: 0.85rem; padding: 8px 14px; }
.btn-ghost:hover { background: rgba(198,148,31,0.1); color: var(--signal-deep); }

.tag {
  display: inline-block; font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.06em; padding: 5px 11px; border-radius: 6px;
  background: rgba(198,148,31,0.14); color: var(--signal-deep);
}
[data-theme="dark"] .tag { color: var(--signal); }
.tag-security { background: rgba(198,148,31,0.14); color: var(--signal-deep); }
.tag-windows { background: rgba(74,85,104,0.14); color: var(--slate); }
.tag-privacy { background: rgba(75,122,99,0.14); color: var(--sage); }
.tag-safety { background: rgba(176,86,46,0.14); color: var(--rust); }
.tag-software { background: rgba(43,49,61,0.1); color: var(--ink-soft); }
[data-theme="dark"] .tag-security { color: var(--signal); }
[data-theme="dark"] .tag-windows { color: #A9B4C4; }
[data-theme="dark"] .tag-privacy { color: #8FC3A6; }
[data-theme="dark"] .tag-safety { color: #E0916B; }
[data-theme="dark"] .tag-software { color: #C7C2B3; }

/* =============== Hero =============== */
.hero {
  background: linear-gradient(155deg, var(--hero-grad-1) 0%, var(--hero-grad-2) 100%);
  color: #F3EFE3;
  padding: 60px 0 68px;
  position: relative;
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: 1fr; gap: 40px; align-items: center; position: relative; z-index: 2; }
@media (min-width: 900px) { .hero .wrap { grid-template-columns: 1.1fr 0.9fr; } }
.hero-eyebrow {
  display: inline-block; color: var(--signal); font-weight: 800; letter-spacing: 0.08em;
  text-transform: uppercase; font-size: 0.76rem; margin-bottom: 14px;
}
.hero h1 { color: #F8F5EA; margin-bottom: 0.4em; }
.hero p.lede { color: #C7C2B3; }
.hero-graphic { width: 100%; max-width: 400px; margin: 0 auto; }

/* =============== Sections =============== */
.section { padding: 54px 0; }
.section-alt { background: var(--paper-raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 26px; flex-wrap: wrap; }
.section-head h2 { margin: 0; }
.section-head .eyebrow { color: var(--signal-deep); font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.76rem; display: block; margin-bottom: 6px; }
[data-theme="dark"] .section-head .eyebrow { color: var(--signal); }
.section-link { font-weight: 700; font-size: 0.92rem; white-space: nowrap; }

/* =============== Cards / Grids =============== */
.grid { display: grid; gap: 22px; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr; }
@media (min-width: 700px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } .grid-4 { grid-template-columns: repeat(4, 1fr); } }

.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex; flex-direction: column;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card-media { aspect-ratio: 16/10; background: var(--paper); }
.card-media svg { width: 100%; height: 100%; }
.card-body { padding: 18px 18px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.card-body h3 { font-size: 1.07rem; margin: 0; }
.card-body h3 a { color: var(--ink); }
.card-body h3 a:hover { color: var(--signal-deep); text-decoration: none; }
.card-excerpt { color: var(--ash); font-size: 0.92rem; margin: 0; flex: 1; }
.card-meta { font-size: 0.78rem; color: var(--ash); display: flex; gap: 10px; align-items: center; }

.featured-card {
  display: grid; grid-template-columns: 1fr; gap: 28px;
  background: var(--paper-raised); border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
}
@media (min-width: 800px) { .featured-card { grid-template-columns: 1fr 1fr; } }
.featured-media { background: linear-gradient(150deg,var(--hero-grad-1),var(--hero-grad-2)); display:flex; align-items:center; justify-content:center; padding: 24px; }
.featured-media svg { width: 100%; max-width: 320px; }
.featured-body { padding: 32px 32px 32px 0; display: flex; flex-direction: column; justify-content: center; }
@media (max-width: 799px) { .featured-body { padding: 0 24px 28px; } }

/* Topic browse */
.topic-tile {
  display: block; padding: 22px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--paper-raised); color: var(--ink);
}
.topic-tile:hover { border-color: var(--signal); text-decoration: none; box-shadow: var(--shadow-sm); }
.topic-tile h3 { margin: 10px 0 6px; font-size: 1.03rem; }
.topic-tile p { margin: 0; color: var(--ash); font-size: 0.87rem; }
.topic-icon { width: 32px; height: 32px; color: var(--signal-deep); }
[data-theme="dark"] .topic-icon { color: var(--signal); }

/* Newsletter */
.newsletter {
  background: var(--ink); color: var(--paper); border-radius: 18px; padding: 40px;
  display: grid; gap: 24px;
}
[data-theme="dark"] .newsletter { background: var(--paper-raised); border: 1px solid var(--line); }
@media (min-width: 800px) { .newsletter { grid-template-columns: 1.2fr 1fr; align-items: center; } }
.newsletter h2 { color: var(--paper); }
[data-theme="dark"] .newsletter h2 { color: var(--ink); }
.newsletter p { color: #C7C2B3; margin-bottom: 0; }
[data-theme="dark"] .newsletter p { color: var(--ash); }
.newsletter-form { display: flex; flex-wrap: wrap; gap: 10px; }
.newsletter-form input[type="email"] {
  flex: 1 1 220px; padding: 13px 14px; border-radius: 9px; border: none; font-size: 0.95rem;
}
.newsletter-note { font-size: 0.78rem; color: #A69F8C; margin-top: 10px; }

/* =============== Footer =============== */
.site-footer { background: var(--ink); color: #C7C2B3; padding: 54px 0 28px; margin-top: 40px; }
[data-theme="dark"] .site-footer { background: var(--paper-raised); border-top: 1px solid var(--line); color: var(--ash); }
.footer-grid { display: grid; gap: 32px; grid-template-columns: 1fr; margin-bottom: 38px; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); } }
.footer-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 800; font-size: 1.14rem; color: #F3EFE3; margin-bottom: 10px; }
[data-theme="dark"] .footer-brand { color: var(--ink); }
.footer-tagline { color: #9C9683; font-size: 0.9rem; max-width: 320px; }
[data-theme="dark"] .footer-tagline { color: var(--ash); }
.site-footer h4 { color: #F3EFE3; font-size: 0.84rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 14px; }
[data-theme="dark"] .site-footer h4 { color: var(--ink); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: #C7C2B3; font-size: 0.92rem; }
[data-theme="dark"] .site-footer a { color: var(--ash); }
.site-footer a:hover { color: var(--signal); }
.footer-bottom { border-top: 1px solid #363B47; padding-top: 24px; display: flex; flex-wrap: wrap; gap: 14px; justify-content: space-between; color: #86806F; font-size: 0.81rem; }
[data-theme="dark"] .footer-bottom { border-top-color: var(--line); }
.footer-disclosure {
  background: #262B35; border: 1px solid #3A4050; border-radius: 12px; padding: 18px 20px;
  font-size: 0.83rem; color: #B9B2A0; margin-bottom: 32px; line-height: 1.55;
}
[data-theme="dark"] .footer-disclosure { background: var(--paper-raised); border-color: var(--line); color: var(--ash); }

/* =============== Breadcrumbs =============== */
.breadcrumb { font-size: 0.85rem; color: var(--ash); margin: 20px 0; }
.breadcrumb a { color: var(--ash); }
.breadcrumb a:hover { color: var(--signal-deep); }
.breadcrumb .sep { margin: 0 6px; color: #C6C9CE; }

/* =============== Article layout =============== */
.article-header { padding: 18px 0 32px; border-bottom: 1px solid var(--line); }
.article-header .tag { margin-bottom: 14px; }
.article-header h1 { margin-bottom: 14px; }
.article-meta {
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center; color: var(--ash); font-size: 0.87rem;
  padding-top: 14px; border-top: 1px solid var(--line); margin-top: 18px;
}
.article-meta .byline { font-weight: 700; color: var(--ink-soft); }
.article-actions { display: flex; gap: 10px; margin-left: auto; }
.article-hero { margin: 32px 0; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); }
.article-hero svg { width: 100%; display: block; }

.article-layout { display: grid; grid-template-columns: 1fr; gap: 40px; padding: 40px 0 64px; }
@media (min-width: 960px) { .article-layout { grid-template-columns: 220px minmax(0,1fr); } }
.article-layout.no-toc { grid-template-columns: 1fr; }

.toc { position: sticky; top: 90px; align-self: start; }
.toc h2 { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ash); margin-bottom: 10px; }
.toc ol { list-style: none; padding: 0; margin: 0; border-left: 2px solid var(--line); }
.toc li { margin: 0; }
.toc a {
  display: block; padding: 7px 0 7px 14px; font-size: 0.85rem; color: var(--ash); border-left: 2px solid transparent; margin-left: -2px;
}
.toc a:hover { color: var(--signal-deep); text-decoration: none; border-left-color: var(--signal); }

.article-body h2 { margin-top: 1.6em; padding-top: 0.2em; scroll-margin-top: 90px; }
.article-body h3 { margin-top: 1.3em; scroll-margin-top: 90px; }
.article-body p, .article-body li { color: var(--text); }
.article-body table { width: 100%; border-collapse: collapse; margin: 1.4em 0; font-size: 0.91rem; }
.article-body caption { text-align: left; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
.article-body th, .article-body td { border: 1px solid var(--line); padding: 10px 12px; text-align: left; vertical-align: top; }
.article-body th { background: var(--paper); color: var(--ink); font-size: 0.81rem; text-transform: uppercase; letter-spacing: 0.03em; }
.article-body tbody tr:nth-child(even) { background: rgba(0,0,0,0.015); }
[data-theme="dark"] .article-body tbody tr:nth-child(even) { background: rgba(255,255,255,0.02); }
.article-body blockquote {
  margin: 1.6em 0; padding: 18px 22px; border-left: 4px solid var(--signal); background: rgba(198,148,31,0.06);
  border-radius: 0 10px 10px 0; color: var(--ink-soft);
}
.callout {
  border: 1px solid var(--line); border-left: 4px solid var(--ink); background: var(--paper-raised);
  border-radius: 0 12px 12px 0; padding: 18px 20px; margin: 1.6em 0;
}
.callout h4 { margin: 0 0 8px; font-size: 0.95rem; }
.callout p:last-child { margin-bottom: 0; }
.callout-disclosure { border-left-color: var(--signal-deep); background: rgba(198,148,31,0.06); }
.callout-warn { border-left-color: var(--danger); background: rgba(168,64,44,0.06); }

.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin: 1.6em 0 1em; }
.filter-btn {
  border: 1px solid var(--line); background: var(--paper-raised); color: var(--ink-soft);
  padding: 8px 14px; border-radius: 999px; font-size: 0.82rem; font-weight: 700; cursor: pointer;
}
.filter-btn:hover { border-color: var(--signal); }
.filter-btn[aria-pressed="true"] { background: var(--signal-deep); border-color: var(--signal-deep); color: #fff; }
[data-theme="dark"] .filter-btn[aria-pressed="true"] { color: #1B1F27; }
.filter-row-hidden { display: none !important; }

.ad-slot {
  border: 1px dashed #C7CCD3; border-radius: 10px; padding: 18px; text-align: center;
  color: var(--ash); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; margin: 2em 0;
  background: var(--paper);
}

.faq-item { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq-item h3 { font-size: 1rem; margin-bottom: 8px; }
.faq-item p { color: var(--ash); margin: 0; }

.reading-progress { position: sticky; top: 0; height: 3px; background: var(--line); z-index: 99; }
.reading-progress-bar { height: 100%; width: 0; background: var(--signal); }

.related-grid { margin-top: 20px; }

.author-box {
  display: flex; gap: 16px; align-items: flex-start; padding: 22px; border: 1px solid var(--line);
  border-radius: 12px; background: var(--paper-raised); margin: 2.4em 0;
}
.author-avatar {
  width: 52px; height: 52px; border-radius: 50%; background: var(--ink);
  color: var(--paper); display: flex; align-items: center; justify-content: center; font-weight: 800; flex-shrink: 0;
}
.author-box h4 { margin: 0 0 4px; }
.author-box p { margin: 0; color: var(--ash); font-size: 0.9rem; }

/* Back to top */
.back-to-top {
  position: fixed; right: 20px; bottom: 20px; width: 46px; height: 46px; border-radius: 50%;
  background: var(--ink); color: var(--paper); border: none; cursor: pointer;
  display: none; align-items: center; justify-content: center; box-shadow: var(--shadow-md); z-index: 90;
}
.back-to-top.visible { display: flex; }
.back-to-top svg { width: 18px; height: 18px; }

/* =============== Page header (non-article) =============== */
.page-header { padding: 44px 0 36px; border-bottom: 1px solid var(--line); background: var(--paper-raised); }
.page-header h1 { margin-bottom: 10px; }
.page-header p { color: var(--ash); max-width: 68ch; margin: 0; }

/* Prose (legal pages) */
.prose { max-width: 78ch; padding: 40px 0 64px; }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.2em; }
.prose ul { margin-bottom: 1.2em; }

/* Contact / forms */
.form-card { background: var(--paper-raised); border: 1px solid var(--line); border-radius: 14px; padding: 28px; }
.form-row { margin-bottom: 18px; }
.form-row label { display: block; font-weight: 700; margin-bottom: 6px; font-size: 0.92rem; color: var(--ink-soft); }
.form-row input, .form-row select, .form-row textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px; font: inherit;
  background: var(--paper-raised); color: var(--text);
}
.form-row textarea { resize: vertical; min-height: 120px; }
.contact-grid { display: grid; gap: 28px; grid-template-columns: 1fr; }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1fr 1.1fr; } }
.contact-card { padding: 18px 0; border-bottom: 1px solid var(--line); }
.contact-card h3 { margin-bottom: 4px; font-size: 1rem; }
.contact-card p { margin: 0; color: var(--ash); font-size: 0.92rem; }

/* 404 */
.error-page { text-align: center; padding: 100px 0; }
.error-page .code { font-family: var(--font-display); font-size: 5rem; font-weight: 800; color: var(--signal-deep); line-height: 1; }
[data-theme="dark"] .error-page .code { color: var(--signal); }

/* Sitemap */
.sitemap-grid { display: grid; gap: 32px; grid-template-columns: 1fr; }
@media (min-width: 700px) { .sitemap-grid { grid-template-columns: repeat(3, 1fr); } }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}