/*
Theme Name: OctetStack
Theme URI: https://octetstack.com
Author: OctetStack Editorial
Author URI: https://octetstack.com
Description: A premium technology publication theme for OctetStack — clean editorial typography, category-based visual system, dark/light mode, and a fast, accessible reading experience. Built mobile-first for software, cloud, security, AI, and hardware guides.
Version: 1.0.7
Requires at least: 6.0
Tested up to: 6.7
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: octetstack
*/

/* ==========================================================================
   1. RESET / BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; max-width: 100%; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--canvas);
  color: var(--text-1);
  font-size: 16px;
  line-height: 1.6;
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
  transition: background-color .25s ease, color .25s ease;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; margin: 0; color: var(--text-1); }
p { margin: 0; }
input, textarea, select { font-family: inherit; font-size: 1rem; }

/* ==========================================================================
   2. DESIGN TOKENS (light default, dark via [data-theme="dark"] on <html>)
   ========================================================================== */
:root, html[data-theme="light"] {
  --canvas: #F8FAFC;
  --surface: #FFFFFF;
  --surface-alt: #F1F5F9;
  --border: #E2E8F0;
  --text-1: #0F172A;
  --text-2: #334155;
  --text-3: #64748B;
  --accent: #0F766E;
  --accent-hover: #115E59;
  --accent-soft: #F0FDFA;
  --accent-on: #FFFFFF;
  --amber: #B45309;
  --amber-soft: #FFFBEB;
  --track-off: #CBD5E1;
  --danger: #DC2626;
  --shadow-xs: 0 1px 2px rgba(15,23,42,0.04);
  --shadow-sm: 0 2px 8px rgba(15,23,42,0.06);
  --shadow-md: 0 8px 24px rgba(15,23,42,0.08);
}
html[data-theme="dark"] {
  --canvas: #0B1220;
  --surface: #1E293B;
  --surface-alt: #334155;
  --border: #475569;
  --text-1: #F8FAFC;
  --text-2: #CBD5E1;
  --text-3: #94A3B8;
  --accent: #2DD4BF;
  --accent-hover: #5EEAD4;
  --accent-soft: #134E4A;
  --accent-on: #052E2B;
  --amber: #FBBF24;
  --amber-soft: #3A2A0E;
  --track-off: #475569;
  --danger: #F87171;
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.35);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.45);
}
/* Transitions are intentionally scoped to theme components. A global transition
   can interfere with third-party ad and Grow widget positioning/animation. */

/* ==========================================================================
   3. LAYOUT
   ========================================================================== */
.os-container { max-width: 1152px; margin: 0 auto; padding: 0 20px; }
@media (min-width: 640px) { .os-container { padding: 0 24px; } }
@media (min-width: 1024px) { .os-container { padding: 0 32px; } }
.os-skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 999;
  background: var(--accent); color: var(--accent-on); padding: 12px 20px; border-radius: 6px;
}
.os-skip-link:focus { left: 16px; top: 16px; }
.os-page-wrap { width: 100%; min-height: 100vh; display: flex; flex-direction: column; }
.os-page-wrap > main { flex: 1 0 auto; min-width: 0; }
.os-footer { flex-shrink: 0; }

/* ==========================================================================
   4. HEADER & PRIMARY NAV
   ========================================================================== */
.os-header {
  position: sticky;
  top: 0;
  z-index: 100;
  isolation: isolate;
  background-color: rgba(248,250,252,.94);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid rgba(226,232,240,.9);
  box-shadow: 0 1px 0 rgba(15,23,42,.02);
}
html[data-theme="dark"] .os-header { background-color: rgba(11,18,32,.94); border-bottom-color: rgba(71,85,105,.75); }
.os-header-inner {
  display: grid;
  grid-template-columns: auto minmax(0,1fr) auto;
  align-items: center;
  gap: 24px;
  min-width: 0;
  height: 72px;
}
.os-logo-wrap { display: flex; align-items: center; min-width: 0; }
.os-logo-wrap .custom-logo-link { display: inline-flex; align-items: center; flex-shrink: 0; }
.os-logo-wrap .custom-logo { width: auto; max-width: 180px; max-height: 40px; object-fit: contain; }
.os-logo { display: inline-flex; align-items: center; gap: 8px; font-family: 'Space Grotesk', sans-serif; font-size: 1.125rem; font-weight: 600; color: var(--text-1); white-space: nowrap; }
.os-logo span { color: var(--accent); }
.os-logo-mark { display: grid; grid-template-columns: repeat(4,5px); grid-template-rows: repeat(2,5px); gap: 2px; flex: 0 0 auto; }
.os-logo-mark i { display: block; width: 5px; height: 5px; border-radius: 1px; background: var(--border); }
.os-logo-mark i:nth-child(3n+1) { background: var(--accent); }

.os-primary-nav { display: none; justify-self: center; min-width: 0; }
.os-primary-nav > ul { display: flex; align-items: center; justify-content: center; flex-wrap: nowrap; gap: 3px; margin: 0; padding: 0; list-style: none; white-space: nowrap; }
.os-primary-nav > ul > li { flex: 0 0 auto; }
.os-primary-nav > ul > li > a,
.os-nav-more-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: 9px;
  color: var(--text-2);
  font-size: .875rem;
  font-weight: 600;
  line-height: 1.1;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease, transform .18s ease;
}
.os-primary-nav > ul > li > a:hover,
.os-primary-nav > ul > li > a:focus-visible,
.os-nav-more-trigger:hover,
.os-nav-more-trigger:focus-visible,
.os-primary-nav > ul > li.is-current > a,
.os-nav-more.is-open .os-nav-more-trigger {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 18%, var(--border));
  text-decoration: none;
}
.os-nav-more { position: relative; }
.os-nav-more-trigger svg { width: 15px; height: 15px; transition: transform .18s ease; }
.os-nav-more.is-open .os-nav-more-trigger svg { transform: rotate(180deg); }
.os-nav-more-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: min(560px, calc(100vw - 48px));
  padding: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 22px 60px rgba(15,23,42,.16);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px) scale(.985);
  transform-origin: top right;
  pointer-events: none;
  transition: opacity .18s ease, visibility .18s ease, transform .18s ease;
}
.os-nav-more.is-open .os-nav-more-panel,
.os-nav-more:focus-within .os-nav-more-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}
.os-nav-more-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 6px 8px 12px; border-bottom: 1px solid var(--border); }
.os-nav-more-head span { font-family: 'JetBrains Mono', monospace; font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); }
.os-nav-more-head a { font-size: .75rem; font-weight: 600; color: var(--accent); }
.os-nav-more-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 6px; padding-top: 8px; }
.os-nav-category-link { display: flex; align-items: flex-start; gap: 11px; min-width: 0; padding: 11px; border-radius: 11px; color: var(--text-2); transition: background-color .18s ease, color .18s ease; }
.os-nav-category-link:hover,
.os-nav-category-link:focus-visible,
.os-nav-category-link.is-current { background: var(--surface-alt); color: var(--text-1); }
.os-nav-category-icon { display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px; flex: 0 0 30px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: .625rem; font-weight: 700; }
.os-nav-category-link > span:last-child { min-width: 0; }
.os-nav-category-link strong { display: block; color: inherit; font-family: 'Space Grotesk', sans-serif; font-size: .875rem; line-height: 1.25; }
.os-nav-category-link small { display: -webkit-box; margin-top: 3px; overflow: hidden; color: var(--text-3); font-size: .72rem; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }

.os-header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 4px; }
.os-icon-btn { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; padding: 0; border: 1px solid transparent; border-radius: 9px; color: var(--text-2); transition: background-color .18s ease, border-color .18s ease, color .18s ease; }
.os-icon-btn:hover,
.os-icon-btn:focus-visible { background: var(--surface-alt); border-color: var(--border); color: var(--text-1); }
.os-icon-btn svg { width: 20px; height: 20px; display: block; }
.os-menu-toggle { display: inline-flex; }

@media (min-width: 1120px) {
  .os-primary-nav { display: block; }
  .os-menu-toggle { display: none; }
}

/* Premium mobile drawer */
body.os-menu-open,
body.os-search-open { overflow: hidden; }
.os-mobile-menu-layer { position: fixed; inset: 0; z-index: 140; visibility: hidden; pointer-events: none; }
.os-mobile-menu-layer.is-open { visibility: visible; pointer-events: auto; }
.os-mobile-backdrop { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; background: rgba(15,23,42,.45); opacity: 0; transition: opacity .24s ease; }
.os-mobile-menu-layer.is-open .os-mobile-backdrop { opacity: 1; }
.os-mobile-drawer {
  position: absolute;
  inset: 0 0 0 auto;
  display: flex;
  flex-direction: column;
  width: min(430px,92vw);
  max-width: 100%;
  min-height: 100%;
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--canvas);
  border-left: 1px solid var(--border);
  box-shadow: -22px 0 60px rgba(15,23,42,.18);
  transform: translateX(102%);
  transition: transform .26s cubic-bezier(.2,.75,.2,1);
  outline: none;
}
.os-mobile-menu-layer.is-open .os-mobile-drawer { transform: translateX(0); }
.os-mobile-drawer-head { display: flex; align-items: center; justify-content: space-between; min-height: 70px; padding: 0 20px; border-bottom: 1px solid var(--border); background: var(--surface); }
.os-mobile-search { display: flex; align-items: center; gap: 10px; margin: 18px 20px 0; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-xs); }
.os-mobile-search svg { width: 18px; height: 18px; flex: 0 0 auto; color: var(--text-3); }
.os-mobile-search input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; background: transparent; color: var(--text-1); }
.os-mobile-nav-section { padding: 24px 20px 20px; }
.os-mobile-nav-eyebrow { margin-bottom: 12px; font-family: 'JetBrains Mono', monospace; font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); }
.os-mobile-nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; padding: 0; }
.os-mobile-nav-item { position: relative; min-width: 0; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-xs); transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease; }
.os-mobile-nav-item:hover,
.os-mobile-nav-item:focus-within,
.os-mobile-nav-item.is-current { border-color: color-mix(in srgb, var(--accent) 35%, var(--border)); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.os-mobile-nav-link { display: flex; align-items: center; gap: 10px; min-height: 72px; padding: 13px; color: var(--text-1); font-family: 'Space Grotesk', sans-serif; font-size: .875rem; font-weight: 600; line-height: 1.25; }
.os-mobile-nav-index { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; flex: 0 0 28px; border-radius: 8px; background: var(--accent-soft); color: var(--accent); font-family: 'JetBrains Mono', monospace; font-size: .625rem; }
.os-mobile-subnav { position: absolute; top: 0; right: 0; }
.os-mobile-subnav summary { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; margin: 7px; border-radius: 8px; list-style: none; cursor: pointer; color: var(--text-3); }
.os-mobile-subnav summary::-webkit-details-marker { display: none; }
.os-mobile-subnav summary svg { width: 15px; height: 15px; transition: transform .18s ease; }
.os-mobile-subnav[open] summary svg { transform: rotate(180deg); }
.os-mobile-subnav ul { position: absolute; top: 43px; right: 0; z-index: 2; width: 230px; padding: 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); box-shadow: var(--shadow-md); }
.os-mobile-subnav li a { display: block; padding: 8px 9px; border-radius: 7px; color: var(--text-2); font-size: .8125rem; }
.os-mobile-subnav li a:hover { background: var(--surface-alt); color: var(--accent); }
.os-mobile-drawer-footer { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: auto; padding: 20px; border-top: 1px solid var(--border); background: var(--surface); }
.os-mobile-drawer-footer a { color: var(--text-2); font-size: .8125rem; font-weight: 500; }

@media (max-width: 480px) {
  .os-mobile-nav { grid-template-columns: 1fr; }
  .os-mobile-nav-link { min-height: 62px; }
}

/* ==========================================================================
   5. SEARCH MODAL
   ========================================================================== */
.os-search-modal { position: fixed; inset: 0; z-index: 70; background: rgba(0,0,0,.5); display: none; align-items: flex-start; justify-content: center; padding: 96px 16px; }
.os-search-modal.is-open { display: flex; }
.os-search-panel { width: 100%; max-width: 560px; background: var(--surface); border-radius: 12px; box-shadow: var(--shadow-md); padding: 8px; }
.os-search-field { display: flex; align-items: center; gap: 8px; padding: 12px; border-bottom: 1px solid var(--border); }
.os-search-field input { flex: 1; border: none; background: transparent; color: var(--text-1); font-size: 1rem; outline: none; }
.os-search-suggestions { padding: 8px; }
.os-search-suggestions a, .os-search-suggestions button { display: flex; width: 100%; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 8px; font-size: .9375rem; color: var(--text-2); text-align: left; }
.os-search-suggestions a:hover, .os-search-suggestions button:hover { background: var(--surface-alt); }

/* ==========================================================================
   6. BUTTONS
   ========================================================================== */
.os-btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 8px; padding: 10px 20px; font-weight: 600; font-size: .9375rem; }
.os-btn-primary { background: var(--accent); color: var(--accent-on); transition: background-color .2s ease; }
.os-btn-primary:hover { background: var(--accent-hover); }
.os-btn-primary svg { transition: transform .3s cubic-bezier(.34,1.56,.64,1); }
.os-featured-banner:hover .os-btn-primary svg { transform: translateX(6px); }
.os-btn-secondary { border: 1px solid var(--accent); color: var(--accent); }
.os-btn-ghost { color: var(--accent); }
.os-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ==========================================================================
   7. BADGES & BYTE METER
   ========================================================================== */
.os-badge { display: inline-flex; align-items: center; border-radius: 6px; padding: 2px 8px; font-size: .6875rem; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; font-family: 'JetBrains Mono', monospace; }
.os-badge-teal { background: var(--accent-soft); color: var(--accent); }
.os-badge-amber { background: var(--amber-soft); color: var(--amber); }
.os-badge-neutral { background: var(--surface-alt); color: var(--text-2); }

.os-byte-meter { display: inline-flex; align-items: center; gap: 8px; }
.os-byte-meter .os-byte-dots { display: flex; gap: 2px; }
.os-byte-meter .os-byte-dots span { width: 6px; height: 6px; border-radius: 1px; background: var(--border); }
.os-byte-meter .os-byte-dots span.is-filled { background: var(--accent); }
.os-byte-meter-label { font-size: .75rem; font-weight: 500; text-transform: uppercase; letter-spacing: .03em; color: var(--text-2); font-family: 'JetBrains Mono', monospace; }

/* ==========================================================================
   8. ARTICLE CARDS + "Read Article" CTA (shared across home/archive/related)
   ========================================================================== */
.os-card-grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .os-card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .os-card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); } .os-card-grid.cols-4 { grid-template-columns: repeat(4, 1fr); } }

.os-card {
  display: flex; flex-direction: column; overflow: hidden; border-radius: 12px;
  border: 1px solid var(--border); background: var(--surface);
  box-shadow: var(--shadow-xs); transition: transform .25s cubic-bezier(.2,.8,.2,1), box-shadow .25s ease, border-color .25s ease;
}
.os-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) {
  .os-card:hover { transform: none; }
  .os-card:hover .os-card-media img { transform: none; }
  .os-card:hover .os-card-media svg { transform: translate(-50%, -50%); }
  .os-card:hover .os-card-cta svg { transform: none; }
}
.os-card-media { position: relative; height: 180px; overflow: hidden; background: linear-gradient(135deg, var(--accent-soft), var(--surface-alt)); }
.os-card-media img { display: block; width: 100%; height: 100%; object-fit: cover; transition: transform .4s cubic-bezier(.2,.8,.2,1); }
.os-card:hover .os-card-media img, .os-card:hover .os-card-media svg { transform: scale(1.08); }
.os-card-media svg { width: 64px; height: 64px; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); transition: transform .4s cubic-bezier(.2,.8,.2,1); }
.os-card:hover .os-card-media svg { transform: translate(-50%, -50%) scale(1.08); }
.os-card-body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.os-card-title {
  margin-top: 8px; font-size: 1rem; font-weight: 700; line-height: 1.35;
  background-image: linear-gradient(var(--text-1), var(--text-1));
  background-repeat: no-repeat; background-position: 0 100%; background-size: 0% 2px;
  transition: background-size .3s ease;
}
.os-card:hover .os-card-title { background-size: 100% 2px; }
.os-card-excerpt { margin-top: 6px; font-size: .875rem; color: var(--text-2); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.os-card-meta { margin-top: 12px; display: flex; align-items: center; justify-content: space-between; font-size: .875rem; font-weight: 500; color: var(--text-2); }
.os-card-avatar { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; border-radius: 50%; color: #fff; font-size: .625rem; font-weight: 700; margin-right: 6px; }
.os-card-cta {
  margin-top: 16px; position: relative; display: inline-flex; width: fit-content; align-items: center; gap: 6px;
  font-size: .875rem; font-weight: 700; color: var(--accent); padding-bottom: 2px;
}
.os-card-cta::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform .3s cubic-bezier(.2,.8,.2,1);
}
.os-card:hover .os-card-cta::after { transform: scaleX(1); }
.os-card-cta svg { width: 14px; height: 14px; transition: transform .3s cubic-bezier(.34,1.56,.64,1); }
.os-card:hover .os-card-cta svg { transform: translateX(6px); }
.os-card-link { display: flex; color: inherit; height: 100%; min-width: 0; }



/* Homepage trending and category grids */
.os-trending-grid { align-items: stretch; }
.os-trending-grid .os-card { height: 100%; }
.os-trending-grid .os-card-body { min-width: 0; }

.os-category-section {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(circle at 100% 0%, var(--accent-soft) 0, transparent 34%),
    linear-gradient(180deg, var(--surface) 0%, var(--canvas) 100%);
}
.os-category-section::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .35;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.35), transparent 62%);
}
.os-category-section > .os-container { position: relative; z-index: 1; }
.os-category-section-head { align-items: flex-end; }
.os-category-intro { max-width: 620px; margin-top: 10px; color: var(--text-2); font-size: .975rem; }
.os-category-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
.os-category-card {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 236px;
  flex-direction: column;
  overflow: hidden;
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  color: inherit;
  box-shadow: var(--shadow-xs);
  transition: transform .25s cubic-bezier(.2,.8,.2,1), border-color .25s ease, box-shadow .25s ease, background-color .25s ease;
}
.os-category-card:hover,
.os-category-card:focus-visible {
  transform: translateY(-5px);
  border-color: var(--accent);
  background: var(--surface);
  box-shadow: var(--shadow-md);
}
.os-category-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.os-category-card-accent {
  position: absolute;
  top: 0;
  left: 22px;
  right: 22px;
  height: 3px;
  border-radius: 0 0 99px 99px;
  background: linear-gradient(90deg, var(--accent), var(--amber));
  transform: scaleX(.22);
  transform-origin: left;
  transition: transform .3s cubic-bezier(.2,.8,.2,1);
}
.os-category-card:hover .os-category-card-accent,
.os-category-card:focus-visible .os-category-card-accent { transform: scaleX(1); }
.os-category-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.os-category-icon-wrap {
  display: inline-flex;
  width: 66px;
  height: 58px;
  flex: 0 0 66px;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--accent) 18%, var(--border));
  border-radius: 14px;
  background: var(--accent-soft);
}
.os-category-icon-wrap .os-cat-icon { width: 58px; height: 44px; }
.os-category-number {
  color: var(--text-3);
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
}
.os-category-card-copy { margin-top: 20px; }
.os-category-card-copy h3 { font-size: 1.05rem; line-height: 1.28; overflow-wrap: anywhere; }
.os-category-card-copy p {
  display: -webkit-box;
  min-height: 2.9em;
  margin-top: 8px;
  overflow: hidden;
  color: var(--text-2);
  font-size: .83rem;
  line-height: 1.45;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.os-category-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: auto; padding-top: 18px; }
.os-category-count {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  font-weight: 700;
}
.os-category-arrow {
  display: inline-flex;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--accent);
  transition: transform .25s ease, background-color .25s ease, color .25s ease, border-color .25s ease;
}
.os-category-arrow svg { width: 16px; height: 16px; }
.os-category-card:hover .os-category-arrow,
.os-category-card:focus-visible .os-category-arrow {
  transform: translateX(3px);
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-on);
}
@media (min-width: 560px) {
  .os-category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 900px) {
  .os-trending-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .os-category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (min-width: 1120px) {
  .os-trending-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  .os-category-card:hover,
  .os-category-card:focus-visible,
  .os-category-card:hover .os-category-arrow,
  .os-category-card:focus-visible .os-category-arrow { transform: none; }
}

/* ==========================================================================
   9. HERO & FEATURED GUIDE BANNER
   ========================================================================== */
.os-hero { padding: 64px 0; border-bottom: 1px solid var(--border); text-align: center; }
@media (min-width: 640px) { .os-hero { padding: 96px 0; } }
.os-hero-eyebrow { font-family: 'JetBrains Mono', monospace; font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--accent); margin-bottom: 16px; }
.os-hero h1 { font-size: 34px; line-height: 1.1; max-width: 720px; margin: 0 auto; }
@media (min-width: 640px) { .os-hero h1 { font-size: 44px; } }
@media (min-width: 1024px) { .os-hero h1 { font-size: 56px; } }
.os-hero-sub { margin: 20px auto 0; max-width: 560px; font-size: 1.125rem; color: var(--text-2); }
.os-hero-search { position: relative; max-width: 520px; margin: 32px auto 0; }
.os-hero-search input { width: 100%; height: 56px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); padding: 0 48px; font-size: 1rem; color: var(--text-1); }
.os-hero-search svg.os-search-icon { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-3); }
.os-hero-tags { margin-top: 16px; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; font-size: .9375rem; }
.os-hero-tags span.label { color: var(--text-2); font-weight: 500; }
.os-tag-chip { border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; color: var(--accent); font-weight: 500; }
.os-tag-chip.is-active { background: var(--accent); border-color: var(--accent); color: var(--accent-on); }

.os-featured-banner { display: grid; grid-template-columns: 1fr; border: 1px solid var(--border); border-radius: 16px; overflow: hidden; background: var(--surface); box-shadow: var(--shadow-xs); transition: transform .2s ease, box-shadow .2s ease; }
.os-featured-banner:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
@media (min-width: 768px) { .os-featured-banner { grid-template-columns: 1fr 1fr; } }
.os-featured-media { position: relative; height: 224px; overflow: hidden; background: linear-gradient(135deg, var(--accent-soft), var(--surface-alt)); }
@media (min-width: 768px) { .os-featured-media { height: 320px; } }
.os-featured-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.os-featured-media svg { width: 110px; height: 110px; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); }
.os-featured-content { padding: 32px 40px; display: flex; flex-direction: column; justify-content: center; }
.os-featured-content h3 { font-size: 1.5rem; margin-top: 12px; }
@media (min-width: 640px) { .os-featured-content h3 { font-size: 1.875rem; } }

/* ==========================================================================
   10. SINGLE POST
   ========================================================================== */
.os-breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: var(--text-3); margin-bottom: 16px; }
.os-breadcrumbs a { color: var(--text-3); }
.os-breadcrumbs a:hover { color: var(--accent); }
.os-breadcrumbs .sep { color: var(--border); }
.os-breadcrumbs .current { color: var(--text-2); }

.os-post-title { font-size: 28px; line-height: 1.2; margin-top: 12px; }
@media (min-width: 640px) { .os-post-title { font-size: 38px; } }
@media (min-width: 1024px) { .os-post-title { font-size: 42px; } }

.os-post-meta { margin-top: 16px; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; font-size: .9375rem; color: var(--text-2); }
.os-post-meta .author-link { display: flex; align-items: center; gap: 8px; }
.os-post-meta .author-avatar { width: 28px; height: 28px; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: .75rem; font-weight: 700; }
.os-post-meta .meta-item { display: inline-flex; align-items: center; gap: 4px; }
.os-post-meta svg { width: 14px; height: 14px; }

.os-post-media { margin-top: 32px; border-radius: 12px; overflow: hidden; height: 224px; }
@media (min-width: 640px) { .os-post-media { height: 288px; } }
.os-post-media img { display: block; width: 100%; height: 100%; object-fit: cover; }
.os-post-media.svg-fallback { display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--accent-soft), var(--surface-alt)); }
.os-post-media.svg-fallback svg { width: 140px; height: 140px; }

.os-post-layout { margin-top: 40px; display: grid; gap: 40px; grid-template-columns: minmax(0, 1fr); min-width: 0; }
@media (min-width: 1024px) { .os-post-layout { grid-template-columns: 200px minmax(0, 1fr); } }
.os-toc { display: none; min-width: 0; }
@media (min-width: 1024px) { .os-toc { display: block; } }
.os-toc-inner { position: sticky; top: 96px; }
.os-toc-label { font-family: 'JetBrains Mono', monospace; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); margin-bottom: 12px; }
.os-toc-inner nav a { display: block; padding: 6px 0; font-size: .9375rem; color: var(--text-2); }
.os-toc-inner nav a:hover { color: var(--accent); }
.os-toc-mobile { display: block; margin-bottom: 24px; border: 1px solid var(--border); border-radius: 10px; padding: 4px 16px; }
@media (min-width: 1024px) { .os-toc-mobile { display: none; } }
.os-toc-mobile summary { padding: 12px 0; font-weight: 600; cursor: pointer; }

.os-post-content { max-width: 720px; min-width: 0; width: 100%; font-size: 1.0625rem; line-height: 1.75; color: var(--text-2); }
.os-post-content > * + * { margin-top: 20px; }
.os-post-content h2 { font-size: 1.5rem; margin-top: 40px; color: var(--text-1); }
.os-post-content h3 { font-size: 1.15rem; margin-top: 24px; color: var(--text-1); }
.os-post-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.os-post-content img { border-radius: 10px; margin: 24px 0; }

.os-key-takeaways { border: 1px solid var(--accent); background: var(--accent-soft); border-radius: 12px; padding: 20px; margin: 24px 0; }
.os-key-takeaways .kt-label { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--accent); margin-bottom: 12px; }
.os-key-takeaways ul li { display: flex; gap: 8px; margin-top: 10px; font-size: .9375rem; color: var(--text-1); }
.os-key-takeaways ul li:first-child { margin-top: 0; }
.os-key-takeaways svg { flex-shrink: 0; width: 16px; height: 16px; margin-top: 3px; color: var(--accent); }

.os-callout { border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; padding: 16px; margin: 24px 0; }
.os-callout.tip { border-color: var(--amber); background: var(--amber-soft); }
.os-callout.warning { border-color: var(--text-3); background: var(--surface-alt); }
.os-callout-title { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: .9375rem; color: var(--text-1); }
.os-callout p { margin-top: 6px; font-size: .9375rem; color: var(--text-2); }

.os-quote { border-left: 4px solid var(--accent); padding: 8px 0 8px 24px; margin: 24px 0; position: relative; }
.os-quote p { font-family: 'Space Grotesk', sans-serif; font-size: 1.15rem; color: var(--text-1); line-height: 1.4; }
.os-quote cite { display: block; margin-top: 8px; font-family: 'JetBrains Mono', monospace; font-size: .75rem; text-transform: uppercase; color: var(--text-3); font-style: normal; }

.os-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; margin: 24px 0; }
.os-post-content table { width: 100%; min-width: 480px; border-collapse: collapse; font-size: .9375rem; }
.os-post-content table th { text-align: left; font-family: 'JetBrains Mono', monospace; font-size: .6875rem; text-transform: uppercase; color: var(--text-2); padding: 12px; border-bottom: 2px solid var(--border); }
.os-post-content table td { padding: 12px; border-bottom: 1px solid var(--border); color: var(--text-2); }
.os-post-content table tr:last-child td { border-bottom: none; }

.os-code-block { margin: 24px 0; border-radius: 10px; overflow: hidden; background: #18181B; }
.os-code-head { display: flex; align-items: center; justify-content: space-between; padding: 8px 16px; border-bottom: 1px solid #27272A; }
.os-code-head span { font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: #A1A1AA; }
.os-copy-btn { display: flex; align-items: center; gap: 6px; font-size: .75rem; color: #A1A1AA; }
.os-copy-btn:hover { color: #fff; }
.os-code-block pre { margin: 0; padding: 16px; overflow-x: auto; font-family: 'JetBrains Mono', monospace; font-size: .8125rem; color: #F4F4F5; line-height: 1.6; }

.os-faq-item { border: 1px solid var(--border); border-radius: 10px; margin-top: -1px; overflow: hidden; }
.os-faq-item summary { list-style: none; display: flex; align-items: center; justify-content: space-between; padding: 16px; font-weight: 600; font-size: .9375rem; cursor: pointer; }
.os-faq-item summary::-webkit-details-marker { display: none; }
.os-faq-item summary svg { transition: transform .2s ease; flex-shrink: 0; color: var(--text-3); }
.os-faq-item[open] summary svg { transform: rotate(180deg); }
.os-faq-item .faq-answer { padding: 0 16px 16px; font-size: .9375rem; color: var(--text-2); }

.os-post-footer-row { margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.os-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.os-tag { background: var(--surface-alt); color: var(--text-2); border-radius: 999px; padding: 4px 12px; font-size: .75rem; font-weight: 500; }
.os-share { display: flex; align-items: center; gap: 8px; }
.os-share span.label { font-family: 'JetBrains Mono', monospace; font-size: .75rem; text-transform: uppercase; color: var(--text-3); }
.os-share a, .os-share button { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 8px; padding: 6px 10px; font-size: .75rem; color: var(--text-2); }
.os-share a:hover, .os-share button:hover { border-color: var(--accent); color: var(--accent); }


/* WordPress block/content safeguards */
.os-post-content,
.os-page-body { min-width: 0; overflow-wrap: anywhere; word-break: normal; }
.os-post-content > *,
.os-page-body > * { max-width: 100%; }
.os-post-content p,
.os-page-body p { overflow-wrap: anywhere; }
.os-post-content ul,
.os-page-body ul { list-style: disc; padding-left: 1.35rem; }
.os-post-content ol,
.os-page-body ol { list-style: decimal; padding-left: 1.35rem; }
.os-post-content li,
.os-page-body li { margin-top: 6px; }
.os-post-content figure,
.os-page-body figure,
.os-post-content .wp-block-image,
.os-page-body .wp-block-image,
.os-post-content .wp-block-embed,
.os-page-body .wp-block-embed { width: 100%; max-width: 100%; margin-left: 0; margin-right: 0; }
.os-post-content video,
.os-page-body video,
.os-post-content .wp-block-embed iframe,
.os-page-body .wp-block-embed iframe,
.os-post-content iframe[src*="youtube.com"],
.os-post-content iframe[src*="youtu.be"],
.os-post-content iframe[src*="vimeo.com"],
.os-page-body iframe[src*="youtube.com"],
.os-page-body iframe[src*="youtu.be"],
.os-page-body iframe[src*="vimeo.com"] { display: block; width: 100%; max-width: 100%; border: 0; }
.os-post-content .wp-block-embed__wrapper,
.os-page-body .wp-block-embed__wrapper { max-width: 100%; overflow: hidden; }
.os-post-content .alignwide,
.os-post-content .alignfull,
.os-page-body .alignwide,
.os-page-body .alignfull { width: 100%; max-width: 100%; margin-left: 0; margin-right: 0; }
.os-post-content pre,
.os-page-body pre { max-width: 100%; overflow-x: auto; white-space: pre; }
.os-post-content code,
.os-page-body code { overflow-wrap: normal; }
.os-post-content table,
.os-page-body table { display: block; width: 100%; min-width: 0; max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.os-post-content .wp-block-table,
.os-page-body .wp-block-table { max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.os-post-content .wp-block-table table,
.os-page-body .wp-block-table table { display: table; min-width: 480px; }

.os-author-box { margin-top: 32px; border: 1px solid var(--border); border-radius: 12px; padding: 24px; background: var(--surface); display: flex; gap: 16px; align-items: flex-start; }
.os-author-box .avatar { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-family: 'Space Grotesk', sans-serif; font-size: 1.125rem; font-weight: 700; flex-shrink: 0; }
.os-author-box h3 { font-size: 1rem; }
.os-author-box .role { font-size: .875rem; color: var(--text-2); }
.os-author-box .bio { margin-top: 8px; font-size: .9375rem; color: var(--text-2); line-height: 1.6; }

.os-related { margin-top: 40px; }

/* ==========================================================================
   11. COMMENTS
   ========================================================================== */
.os-comments { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border); }
.os-comments-title { display: flex; align-items: center; gap: 8px; font-size: 1.25rem; margin-bottom: 20px; }
.os-comment-list { list-style: none; margin: 0 0 32px; padding: 0; }
.os-comment-list ul.children { list-style: none; margin: 16px 0 0 32px; padding: 0; border-left: 2px solid var(--border); padding-left: 20px; }
.comment-body { border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-top: 16px; background: var(--surface); }
.comment-author { display: flex; align-items: center; gap: 10px; }
.comment-author .avatar-fallback { width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-on); display: flex; align-items: center; justify-content: center; font-size: .75rem; font-weight: 700; }
.comment-author .fn { font-weight: 600; font-size: .9375rem; }
.comment-metadata { font-size: .75rem; color: var(--text-3); margin-left: 42px; }
.comment-content { margin-top: 10px; margin-left: 42px; font-size: .9375rem; color: var(--text-2); }
.comment-reply-link { display: inline-block; margin-top: 8px; margin-left: 42px; font-size: .8125rem; font-weight: 600; color: var(--accent); }
.os-no-comments { border: 1px dashed var(--border); border-radius: 12px; padding: 40px; text-align: center; color: var(--text-2); }

.os-comment-form { margin-top: 24px; }
.os-comment-form p { margin-top: 14px; }
.os-comment-form label { display: block; margin-bottom: 6px; font-size: .875rem; font-weight: 600; color: var(--text-2); }
.os-comment-form input[type="text"], .os-comment-form input[type="email"], .os-comment-form input[type="url"], .os-comment-form textarea {
  width: 100%; border: 1px solid var(--border); background: var(--surface); border-radius: 8px; padding: 12px; color: var(--text-1);
}
.os-comment-form textarea { min-height: 120px; }
.os-comment-form .form-submit input[type="submit"] { display: inline-flex; border-radius: 8px; padding: 10px 20px; font-weight: 600; background: var(--accent); color: var(--accent-on); border: none; }

/* ==========================================================================
   12. ARCHIVE / CATEGORY FILTERS
   ========================================================================== */
.os-archive-head { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; }
.os-archive-icon { width: 56px; height: 56px; border-radius: 12px; background: var(--accent-soft); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.os-archive-icon svg { width: 28px; height: 28px; color: var(--accent); }
.os-cat-icon { width: 28px; height: 28px; }
.os-archive-title { font-size: 28px; }
@media (min-width: 640px) { .os-archive-title { font-size: 34px; } }
.os-archive-desc { margin-top: 4px; color: var(--text-2); }
.os-filter-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.os-filter-chip { border: 1px solid var(--border); border-radius: 999px; padding: 6px 14px; font-size: .8125rem; font-weight: 500; color: var(--text-2); }
.os-filter-chip.is-active { background: var(--accent); border-color: var(--accent); color: var(--accent-on); }

.os-pagination { margin-top: 40px; display: flex; align-items: center; justify-content: space-between; }
.os-pagination a, .os-pagination span { padding: 8px 14px; border-radius: 8px; font-size: .875rem; font-weight: 500; color: var(--text-2); }
.os-pagination .current { background: var(--accent); color: var(--accent-on); }
.os-pagination a:hover { background: var(--surface-alt); }


/* ==========================================================================
   13. STATIC PAGES (About, Contact, legal pages, Sitemap, Our Writers)
   ========================================================================== */
.os-page-header { margin-bottom: 24px; }
.os-page-title { font-size: 28px; }
@media (min-width: 640px) { .os-page-title { font-size: 34px; } }
.os-page-updated { font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: var(--text-3); margin-top: 4px; }
.os-page-body { max-width: 680px; font-size: 1.0625rem; line-height: 1.75; color: var(--text-2); }
.os-page-body > * + * { margin-top: 20px; }
.os-page-body h2 { font-size: 1.375rem; margin-top: 36px; color: var(--text-1); }
.os-page-body h3 { font-size: 1.1rem; margin-top: 20px; color: var(--text-1); }
.os-page-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.os-page-body ul, .os-page-body ol { padding-left: 1.25rem; }
.os-page-body ul li, .os-page-body ol li { margin-top: 6px; }
.os-page-body ul li { list-style: disc; }
.os-page-body ol li { list-style: decimal; }

.os-author-grid { display: grid; gap: 16px; grid-template-columns: 1fr; margin-top: 8px; }
@media (min-width: 640px) { .os-author-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .os-author-grid { grid-template-columns: repeat(4, 1fr); } }
.os-author-tile {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  border: 1px solid var(--border); border-radius: 12px; padding: 24px; background: var(--surface);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.os-author-tile:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
@media (prefers-reduced-motion: reduce) { .os-author-tile:hover { transform: none; } }
.os-author-tile .avatar { width: 48px; height: 48px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-family: 'Space Grotesk', sans-serif; font-weight: 700; margin-bottom: 12px; }
.os-author-tile .name { font-weight: 700; font-size: .9375rem; color: var(--text-1); }
.os-author-tile .role { font-size: .8125rem; color: var(--text-2); margin-top: 2px; }
.os-author-tile .count { font-family: 'JetBrains Mono', monospace; font-size: .75rem; color: var(--text-3); margin-top: 8px; }

.os-sitemap-grid { display: grid; gap: 40px; grid-template-columns: 1fr; margin-top: 8px; }
@media (min-width: 640px) { .os-sitemap-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .os-sitemap-grid { grid-template-columns: repeat(3, 1fr); } }
.os-sitemap-col h2 { font-family: 'JetBrains Mono', monospace; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); }
.os-sitemap-col ul { margin-top: 12px; }
.os-sitemap-col ul li { margin-top: 8px; font-size: .9375rem; }
.os-sitemap-col ul li a { color: var(--text-2); }
.os-sitemap-col ul li a:hover { color: var(--accent); }
.os-sitemap-col ul.children { margin-top: 6px; padding-left: 16px; }
.os-sitemap-col ul.children li { margin-top: 4px; font-size: .875rem; }
.os-sitemap-col .cat-name { font-weight: 600; color: var(--text-1); }

/* ==========================================================================
   14. FOOTER
   ========================================================================== */
.os-footer { padding: 56px 0; }
.os-footer-grid { display: grid; gap: 40px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .os-footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .os-footer-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.os-footer h3 { font-family: 'JetBrains Mono', monospace; font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--text-3); }
.os-footer ul { margin-top: 16px; }
.os-footer ul li { margin-top: 8px; font-size: .9375rem; color: var(--text-2); }
.os-footer-bottom { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; font-size: .875rem; color: var(--text-2); }
.os-footer-bottom .links { display: flex; flex-wrap: wrap; gap: 16px; }

/* ==========================================================================
   15. 404
   ========================================================================== */
.os-404 { text-align: center; padding: 96px 0; }
.os-404-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; max-width: 120px; margin: 0 auto 24px; }
.os-404-grid span { width: 20px; height: 20px; border-radius: 3px; background: var(--border); }
.os-404-grid span.err { background: var(--danger); animation: os-pulse 1.4s ease-in-out infinite; }
@keyframes os-pulse { 0%,100% { opacity: 1; } 50% { opacity: .4; } }
.os-404 h1 { font-size: 28px; }
@media (min-width: 640px) { .os-404 h1 { font-size: 34px; } }
.os-404 p { margin-top: 8px; color: var(--text-2); max-width: 360px; margin-left: auto; margin-right: auto; }
.os-404-actions { margin-top: 24px; display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }

/* ==========================================================================
   16. UTILITIES
   ========================================================================== */
.os-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; }
.os-mt-8 { margin-top: 8px; }
.os-mt-16 { margin-top: 16px; }
.os-mt-24 { margin-top: 24px; }
.os-mt-40 { margin-top: 40px; }
.os-section { padding: 48px 0; }
@media (min-width: 640px) { .os-section { padding: 64px 0; } }
.os-section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 28px; }
.os-section-eyebrow { font-family: 'JetBrains Mono', monospace; font-size: .6875rem; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; color: var(--accent); margin-bottom: 8px; }
.os-section-title { font-size: 26px; }
@media (min-width: 640px) { .os-section-title { font-size: 32px; } }
.os-section-action { font-size: .9375rem; font-weight: 600; color: var(--accent); white-space: nowrap; }


/* ========================================================================== 
   17. MOBILE HARDENING + PUBLISHER PLATFORM COMPATIBILITY
   ========================================================================== */
body.admin-bar .os-header { top: 32px; }

.os-card,
.os-card-body,
.os-card-meta,
.os-post-layout,
.os-post-content,
.os-page-body,
.entry-content { min-width: 0; }

.os-card-title,
.os-post-title,
.os-page-title,
.os-breadcrumbs .current { overflow-wrap: anywhere; }

.os-card-meta,
.os-share { flex-wrap: wrap; }

/*
 * Standard content markers and minimally invasive ad/widget containment.
 * The theme deliberately does not force position/display on vendor roots;
 * Grow, Mediavine, Raptive, AdSense and other networks remain in control of
 * their own sticky, adhesion, interstitial and floating UI.
 */
.entry-content { position: relative; width: 100%; max-width: 100%; }
.entry-content::after { content: ""; display: table; clear: both; }

.entry-content ins.adsbygoogle,
.entry-content .adsbygoogle,
.entry-content [data-ad-slot],
.entry-content [class*="adthrive"],
.entry-content [id*="adthrive"],
.entry-content [class*="mv-ad"],
.entry-content [id*="mediavine" i],
.entry-content [class*="raptive" i],
.entry-content [id*="raptive" i],
.entry-content [class*="ezoic" i],
.entry-content [id*="ezoic" i] {
  clear: both;
  max-width: 100%;
  box-sizing: border-box;
}

.entry-content ins.adsbygoogle,
.entry-content .adsbygoogle { display: block; }

.entry-content iframe,
.entry-content embed,
.entry-content object { max-width: 100%; }

/* Social sharing plugin resets are scoped so they cannot resize Grow app roots. */
.dpsp-content-wrapper,
.dpsp-networks-btns-wrapper { max-width: 100%; box-sizing: border-box; }
.dpsp-content-wrapper *,
.dpsp-networks-btns-wrapper * { box-sizing: border-box; }
.dpsp-content-wrapper ul,
.dpsp-networks-btns-wrapper ul { margin: 0; padding: 0; list-style: none; }

/* wp_footer() is outside .os-page-wrap, so direct-body vendor roots are not clipped. */
body > #grow-me-root,
body > .grow-me-root,
body > [data-grow-me],
body > [id^="grow-me"],
body > [class^="grow-me"] {
  max-width: none;
  overflow: visible;
  box-sizing: border-box;
}

@media (max-width: 782px) {
  body.admin-bar .os-header { top: 46px; }
}

@media (max-width: 639px) {
  .os-container { padding-left: 16px; padding-right: 16px; }
  .os-header-inner { height: 64px; gap: 10px; }
  .os-logo-wrap .custom-logo { max-width: 150px; max-height: 36px; }
  .os-header-actions { gap: 2px; }
  .os-section { padding: 38px 0; }
  .os-section-head { align-items: flex-start; flex-direction: column; margin-bottom: 20px; }
  .os-section-action { white-space: normal; }

  .os-card-grid { gap: 16px; }
  .os-card { border-radius: 10px; }
  .os-card-media { height: auto; min-height: 0; aspect-ratio: 16 / 9; }
  .os-card-body { padding: 14px; }
  .os-card-title { font-size: 1.0625rem; }
  .os-card-excerpt { -webkit-line-clamp: 3; }
  .os-card-meta { justify-content: flex-start; gap: 10px 14px; }
  .os-card-cta { margin-top: 14px; }

  .os-category-intro { font-size: .9375rem; }
  .os-category-grid { gap: 14px; }
  .os-category-card { min-height: 0; padding: 18px; border-radius: 14px; }
  .os-category-card-accent { left: 18px; right: 18px; }
  .os-category-icon-wrap { width: 58px; height: 52px; flex-basis: 58px; }
  .os-category-icon-wrap .os-cat-icon { width: 50px; height: 38px; }
  .os-category-card-copy { margin-top: 16px; }
  .os-category-card-copy p { min-height: 0; }
  .os-category-card-footer { padding-top: 16px; }

  .os-hero { padding: 48px 0; }
  .os-featured-media { height: auto; aspect-ratio: 16 / 9; }
  .os-featured-content { padding: 20px; }
  .os-featured-content h3 { overflow-wrap: anywhere; }

  .os-breadcrumbs { line-height: 1.5; }
  .os-post-title { font-size: clamp(1.75rem, 8vw, 2.2rem); }
  .os-post-meta { gap: 10px 14px; }
  .os-post-media { margin-top: 24px; height: auto; aspect-ratio: 16 / 9; }
  .os-post-layout { margin-top: 28px; gap: 24px; }
  .os-post-content,
  .os-page-body { max-width: 100%; font-size: 1rem; line-height: 1.7; }
  .os-post-content h2 { font-size: 1.35rem; margin-top: 32px; }
  .os-post-content h3 { font-size: 1.1rem; }
  .os-post-content img,
  .os-page-body img { height: auto; }
  .os-toc-mobile { margin-bottom: 8px; }
  .os-post-footer-row { align-items: flex-start; }
  .os-share { width: 100%; }
  .os-author-box { padding: 18px; }
  .os-related .os-section-head { margin-bottom: 18px; }

  .os-comment-list ul.children { margin-left: 10px; padding-left: 12px; }
  .comment-metadata,
  .comment-content,
  .comment-reply-link { margin-left: 0; }

  .os-footer { padding: 42px 0; }
  .os-footer-grid { gap: 30px; }
  .os-footer-bottom { align-items: flex-start; flex-direction: column; }

  .dpsp-content-wrapper,
  .dpsp-networks-btns-wrapper { width: 100% !important; }
  .dpsp-networks-btns-wrapper ul { display: flex; flex-wrap: wrap; gap: 8px; }
}

@media (max-width: 420px) {
  .os-author-box { flex-direction: column; }
  .os-byte-meter-label { font-size: .6875rem; }
  .os-share .label { width: 100%; }
}


/* ==========================================================================
   24. v1.0.7 PREMIUM RESPONSIVE HEADER
   Desktop: logo + concise horizontal category navigation + utility controls.
   Mobile/tablet: compact header with the existing accessible drawer.
   ========================================================================== */
.os-header .os-container { max-width: 1280px; }
.os-header-inner { height: 66px; gap: 14px; }
.os-primary-nav { width: 100%; }
.os-primary-nav > ul { gap: 2px; }
.os-primary-nav > ul > li > a,
.os-nav-more-trigger {
  position: relative;
  min-height: 38px;
  padding: 8px 8px;
  border-radius: 9px;
  font-size: .8125rem;
  letter-spacing: -.01em;
}
.os-primary-nav > ul > li > a::after,
.os-nav-more-trigger::after {
  content: '';
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 2px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0;
  transform: scaleX(.45);
  transition: opacity .18s ease, transform .18s ease;
}
.os-primary-nav > ul > li > a:hover::after,
.os-primary-nav > ul > li > a:focus-visible::after,
.os-primary-nav > ul > li.is-current > a::after,
.os-nav-more-trigger:hover::after,
.os-nav-more-trigger:focus-visible::after,
.os-nav-more.is-open .os-nav-more-trigger::after {
  opacity: 1;
  transform: scaleX(1);
}
.os-nav-label { display: inline-block; white-space: nowrap; }
.os-header-actions { gap: 2px; }
.os-header-actions .os-icon-btn { width: 36px; height: 36px; }
.os-nav-more-panel { top: calc(100% + 10px); width: min(520px, calc(100vw - 40px)); }

@media (max-width: 1023px) {
  .os-header-inner {
    grid-template-columns: minmax(0,1fr) auto;
    height: 64px;
    gap: 10px;
  }
  .os-primary-nav { display: none; }
  .os-menu-toggle { display: inline-flex; }
  .os-logo-wrap .custom-logo { max-width: 168px; max-height: 36px; }
}

@media (min-width: 1024px) {
  .os-header-inner {
    grid-template-columns: auto minmax(0,1fr) auto;
    height: 68px;
    gap: 18px;
  }
  .os-primary-nav { display: flex; align-items: center; justify-content: center; }
  .os-menu-toggle { display: none; }
  .os-logo-wrap .custom-logo { max-width: 176px; max-height: 38px; }
}

@media (min-width: 1180px) {
  .os-header-inner { gap: 24px; }
  .os-primary-nav > ul { gap: 4px; }
  .os-primary-nav > ul > li > a,
  .os-nav-more-trigger { padding: 8px 11px; font-size: .875rem; }
}

@media (max-width: 420px) {
  .os-header-actions .os-icon-btn { width: 34px; height: 34px; }
  .os-header-actions { gap: 0; }
  .os-logo { font-size: 1.05rem; }
}
