/*
Theme Name: Cyber Threat Hub
Theme URI: https://cyberthreathub.com
Author: Cyber Threat Hub
Description: A dark, dashboard-inspired WordPress theme built for cybersecurity news, threat intelligence, and vulnerability reporting sites. Features a live threat ticker, severity-coded post cards, and CVE metadata support.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: cyberthreathub
Tags: dark, news, grid-layout, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* ==========================================================================
   0. DESIGN TOKENS
   ========================================================================== */
:root{
  /* surfaces */
  --bg:            #0A0E13;
  --bg-alt:        #0D1319;
  --surface:       #121820;
  --surface-raised:#171F29;
  --border:        #212B38;
  --border-soft:   #1A222C;

  /* text */
  --text:          #E4EAF0;
  --text-muted:    #7C8A98;
  --text-faint:    #4C5866;

  /* severity / functional color */
  --critical:      #FF4757;
  --critical-dim:  #4A1D24;
  --high:          #FFA630;
  --high-dim:      #4A3417;
  --medium:        #FFD93D;
  --medium-dim:    #4A421A;
  --info:          #3D8BFD;
  --info-dim:      #17253F;
  --accent:        #17E8B0;
  --accent-dim:    #0E3A30;

  /* type */
  --font-display: 'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  --radius: 2px;
  --container: 1280px;
}

/* ==========================================================================
   1. RESET / BASE
   ========================================================================== */
*, *::before, *::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  background-attachment: fixed;
}
img{ max-width:100%; display:block; height:auto; }
a{ color: var(--accent); text-decoration:none; }
a:hover{ color:#fff; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--text);
  margin: 0 0 .5em;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
p{ margin: 0 0 1em; color: var(--text-muted); }
button{ font-family: inherit; cursor:pointer; }
:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.screen-reader-text{ position:absolute !important; clip:rect(1px,1px,1px,1px); width:1px; height:1px; overflow:hidden; }
.cth-skip-link:focus{
  position: fixed !important;
  clip: auto !important;
  width: auto !important; height: auto !important;
  top: 10px; left: 10px; z-index: 999999;
  background: var(--accent);
  color: #04120E;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

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

.eyebrow{
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

/* ==========================================================================
   2. TOP UTILITY BAR + LIVE TICKER (signature element)
   ========================================================================== */
.cth-topbar{
  background: #05070A;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}
.cth-topbar__inner{
  display:flex;
  align-items:center;
  gap: 24px;
  height: 34px;
}
.cth-topbar__clock{
  flex: 0 0 auto;
  color: var(--text-muted);
  white-space: nowrap;
  padding-right: 20px;
  border-right: 1px solid var(--border);
}
.cth-topbar__clock .dot{
  display:inline-block;
  width:6px; height:6px;
  border-radius:50%;
  background: var(--accent);
  margin-right:8px;
  box-shadow: 0 0 6px var(--accent);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{ opacity:1; }
  50%{ opacity:.35; }
}

.cth-ticker{
  flex: 1 1 auto;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(90deg, transparent 0, #000 32px, #000 calc(100% - 32px), transparent 100%);
}
.cth-ticker__track{
  display:flex;
  gap: 40px;
  white-space: nowrap;
  width: max-content;
  animation: ticker 32s linear infinite;
}
.cth-ticker:hover .cth-ticker__track{ animation-play-state: paused; }
@keyframes ticker{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}
.cth-ticker__item{ display:inline-flex; align-items:center; gap:8px; }
.cth-ticker__item .lvl{
  font-weight:700;
  padding: 1px 6px;
  border-radius: var(--radius);
}
.lvl--critical{ background: var(--critical-dim); color: var(--critical); }
.lvl--high{ background: var(--high-dim); color: var(--high); }
.lvl--medium{ background: var(--medium-dim); color: var(--medium); }
.lvl--tracked{ background: var(--accent-dim); color: var(--accent); }

.cth-topbar__social{
  flex: 0 0 auto;
  display:flex;
  gap: 4px;
}
.cth-topbar__social a{
  width: 34px; height:34px;
  display:flex; align-items:center; justify-content:center;
  color: var(--text);
  border-left: 1px solid var(--border);
}
.cth-topbar__social a:hover{ color: var(--accent); background: var(--surface); }
.cth-topbar__social svg{ width:16px; height:16px; fill:currentColor; flex-shrink:0; }

/* ==========================================================================
   3. SITE HEADER + NAV
   ========================================================================== */
.cth-header{
  padding: 0 0 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}
.cth-brand{ display:flex; align-items:flex-start; gap:14px; }
.cth-brand__mark{
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 22px;
  font-weight:700;
}
.cth-brand__name{
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin:0;
}
.cth-brand__name a{ color: var(--text); }
.cth-brand__tagline{
  margin: 6px 0 0;
  color: var(--text-muted);
  font-size: 14.5px;
  max-width: 640px;
}

.cth-navbar{
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.cth-navbar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height: 52px;
}
.cth-nav ul{ display:flex; }
.cth-nav a{
  display:block;
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-right: 1px solid var(--border-soft);
}
.cth-nav a:hover,
.cth-nav .current-menu-item > a{
  color: var(--accent);
  background: var(--surface-raised);
}
.cth-nav-toggle{
  display:none;
  background:none; border:1px solid var(--border);
  color: var(--text); padding: 8px 12px;
}
.cth-search-toggle{
  background:none; border:none; color:var(--text-muted);
  width: 52px; height:52px; display:flex; align-items:center; justify-content:center;
  border-left: 1px solid var(--border-soft);
}
.cth-search-toggle:hover{ color: var(--accent); }
.cth-search-toggle svg{ width:16px; height:16px; fill:currentColor; }

.cth-search-panel{
  max-height:0;
  overflow:hidden;
  background: var(--bg-alt);
  border-bottom: 0 solid var(--border);
  transition: max-height .25s ease;
}
.cth-search-panel.is-open{ max-height:90px; border-bottom-width:1px; }
.cth-search-panel form{ display:flex; padding:18px 0; }
.cth-search-panel input[type="search"]{
  flex:1; background: var(--surface); border:1px solid var(--border);
  color: var(--text); padding: 12px 14px; font-family: var(--font-mono); font-size:13px;
}
.cth-search-panel button{
  background: var(--accent); border:none; color:#04120E; font-weight:700;
  padding: 0 22px; font-family: var(--font-mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em;
}

/* ==========================================================================
   4. SECTION HEADINGS
   ========================================================================== */
.cth-section{ padding: 44px 0; }
.cth-section__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap: 16px;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--critical);
}
.cth-section__head h2{
  font-size: 15px;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
  color: var(--text);
}
.cth-section__head h2::before{
  content: "// ";
  color: var(--critical);
}
.cth-section__more{
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-transform:uppercase;
  letter-spacing:.08em;
}

/* ==========================================================================
   5. GRID LAYOUTS
   ========================================================================== */
.cth-split{
  display:grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 28px;
  align-items:start;
}
.cth-grid-2x2{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.cth-row-4{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.cth-row-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ==========================================================================
   6. POST CARDS
   ========================================================================== */
.cth-card{
  position:relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-faint);
  display:flex; flex-direction:column;
  height:100%;
  transition: border-color .2s ease, transform .2s ease;
}
.cth-card:hover{ border-color: var(--accent); transform: translateY(-2px); }
.cth-card.severity-critical{ border-left-color: var(--critical); }
.cth-card.severity-high{ border-left-color: var(--high); }
.cth-card.severity-medium{ border-left-color: var(--medium); }
.cth-card.cat-news{ border-left-color: var(--info); }

.cth-card__media{
  position:relative;
  display:block;
  overflow:hidden;
  background: #05070A;
  aspect-ratio: 16/10;
}
.cth-card__media img{
  width:100%; height:100%; object-fit:cover;
  transition: transform .5s ease, filter .3s ease;
  filter: grayscale(35%) contrast(1.05) brightness(.85);
}
.cth-card:hover .cth-card__media img{
  transform: scale(1.06);
  filter: grayscale(0%) contrast(1.05) brightness(.95);
}
.cth-card__media::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(10,14,19,0) 40%, rgba(10,14,19,.92) 100%);
}
.cth-card--hero .cth-card__media{ aspect-ratio: 16/11; }

.cth-card__tag{
  position:absolute; top:12px; left:0; z-index:2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  font-weight:700;
  padding: 4px 10px;
  color: #04120E;
  background: var(--text-faint);
}
.cth-card__tag.tag-critical{ background: var(--critical); color:#1a0507; }
.cth-card__tag.tag-high{ background: var(--high); color:#1a0507; }
.cth-card__tag.tag-medium{ background: var(--medium); color:#1a0507; }
.cth-card__tag.tag-news{ background: var(--info); color:#04120E; }
.cth-card__tag.tag-articles{ background: var(--accent); color:#04120E; }

.cth-card__cve{
  position:absolute; top:12px; right:12px; z-index:2;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text);
  background: rgba(5,7,10,.85);
  border: 1px solid var(--border);
  padding: 3px 8px;
  letter-spacing: .02em;
}

.cth-card__overlay-title{
  position:absolute; left:0; right:0; bottom:0; z-index:2;
  padding: 18px;
}
.cth-card__overlay-title h3{
  font-size: clamp(19px, 2vw, 26px);
  margin:0;
}
.cth-card__overlay-title h3 a{ color:#fff; }
.cth-card--grid .cth-card__overlay-title h3{ font-size: 16px; }
.cth-card--row .cth-card__overlay-title h3{ font-size: 15px; }

.cth-card__body{ padding: 14px 16px 18px; flex:1; display:flex; flex-direction:column; }
.cth-card__title{ font-size: 16px; margin-bottom:8px; }
.cth-card__title a{ color: var(--text); }
.cth-card__title a:hover{ color: var(--accent); }
.cth-card__excerpt{ font-size: 13.5px; margin-bottom:10px; }

.cth-card__meta{
  margin-top:auto;
  display:flex; align-items:center; gap:10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  padding-top:10px;
  border-top: 1px solid var(--border-soft);
}
.cth-card__meta .author{ color: var(--text-muted); }
.cth-card__meta svg{ width:11px; height:11px; fill:currentColor; vertical-align:-1px; margin-right:3px; }

.cth-card--overlay-only .cth-card__body{ display:none; }

/* ==========================================================================
   7. FOOTER
   ========================================================================== */
.cth-footer{
  margin-top: 40px;
  background: #05070A;
  border-top: 1px solid var(--border);
  padding: 48px 0 0;
}
.cth-footer__grid{
  display:grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 36px;
  padding-bottom: 36px;
}
.cth-footer h4{
  font-family: var(--font-mono);
  font-size:12px; letter-spacing:.1em; text-transform:uppercase;
  color: var(--accent);
  margin-bottom:16px;
}
.cth-footer p{ font-size:13.5px; }
.cth-footer li{ margin-bottom:10px; }
.cth-footer a{ color: var(--text-muted); font-size:13.5px; }
.cth-footer a:hover{ color: var(--accent); }
.cth-footer-bottom{
  border-top: 1px solid var(--border);
  padding: 18px 0;
  display:flex; justify-content:space-between; align-items:center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
}

/* ==========================================================================
   8. SINGLE / ARCHIVE / PAGE
   ========================================================================== */
.cth-page-header{
  padding: 40px 0 24px;
  border-bottom:1px solid var(--border);
  margin-bottom: 32px;
}
.cth-page-header h1{ font-size: clamp(26px,3vw,38px); }

.cth-single{ max-width: 780px; margin:0 auto; padding: 0 0 60px; }
.cth-single__meta{
  display:flex; gap:14px; flex-wrap:wrap; align-items:center;
  font-family: var(--font-mono); font-size:11.5px; color: var(--text-faint);
  margin-bottom: 18px;
}
.cth-single__title{ font-size: clamp(28px,4vw,42px); margin-bottom:16px; }
.cth-single__thumb{ margin-bottom: 28px; border:1px solid var(--border); }
.cth-single__body{ color: var(--text); font-size: 17px; }
.cth-single__body p{ color: var(--text); }
.cth-single__body h2,.cth-single__body h3{ margin-top:1.6em; }
.cth-single__body a{ text-decoration: underline; text-underline-offset:3px; }
.cth-single__body blockquote{
  border-left: 3px solid var(--accent);
  margin: 24px 0; padding: 4px 20px; color: var(--text-muted); font-style:italic;
}
.cth-single__body pre, .cth-single__body code{
  font-family: var(--font-mono); background: var(--surface); border:1px solid var(--border);
}
.cth-single__body pre{ padding:16px; overflow:auto; }
.cth-single__body code{ padding:2px 6px; font-size:.9em; }
.cth-single__body img{ border:1px solid var(--border); }

.cth-severity-banner{
  display:flex; align-items:center; gap:12px;
  padding: 14px 18px;
  border: 1px solid var(--border);
  margin-bottom: 26px;
  font-family: var(--font-mono); font-size:12.5px;
}
.cth-severity-banner.sev-critical{ border-color: var(--critical); background: var(--critical-dim); color: var(--critical); }
.cth-severity-banner.sev-high{ border-color: var(--high); background: var(--high-dim); color: var(--high); }
.cth-severity-banner.sev-medium{ border-color: var(--medium); background: var(--medium-dim); color: var(--medium); }

.cth-archive-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.cth-pagination{ display:flex; gap:8px; margin-top:36px; font-family: var(--font-mono); font-size:12px; }
.cth-pagination a, .cth-pagination span{
  padding: 8px 14px; border:1px solid var(--border); color: var(--text-muted);
}
.cth-pagination .current{ color: var(--accent); border-color: var(--accent); }
.cth-pagination a:hover{ color: var(--accent); border-color: var(--accent); }

/* ==========================================================================
   9. RESPONSIVE
   ========================================================================== */
@media (max-width: 960px){
  .cth-split{ grid-template-columns: 1fr; }
  .cth-row-4{ grid-template-columns: repeat(2,1fr); }
  .cth-row-3{ grid-template-columns: repeat(2,1fr); }
  .cth-footer__grid{ grid-template-columns: 1fr 1fr; }
  .cth-archive-list{ grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 720px){
  .cth-topbar__clock{ display:none; }
  .cth-nav{
    position:absolute; top:100%; left:0; right:0;
    background: var(--surface); border-bottom:1px solid var(--border);
    display:none;
  }
  .cth-nav.is-open{ display:block; }
  .cth-nav ul{ flex-direction:column; }
  .cth-nav a{ border-right:0; border-bottom:1px solid var(--border-soft); }
  .cth-nav-toggle{ display:block; }
  .cth-navbar__inner{ position:relative; }
  .cth-grid-2x2{ grid-template-columns:1fr; }
  .cth-row-4{ grid-template-columns:1fr; }
  .cth-row-3{ grid-template-columns:1fr; }
  .cth-footer__grid{ grid-template-columns:1fr; }
  .cth-archive-list{ grid-template-columns:1fr; }
}