/*
Theme Name: PB Linux Tech
Theme URI: https://pblinuxtech.online/
Author: PB Linux Tech
Author URI: https://pblinuxtech.online/
Description: A colorful magazine-style WordPress theme built for PB Linux Tech — a blog covering Linux tutorials, tech news, programming and open source. Each category carries its own accent color, terminal-inspired tag pills, and a bold Space Grotesk / JetBrains Mono / Inter type system.
Version: 1.0
Requires at least: 5.9
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: pblinuxtech
Tags: blog, custom-colors, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready
*/

/* =========================================================
   1. DESIGN TOKENS
   ========================================================= */
:root{
  --ink:        #131A2B;   /* base ink / header / footer */
  --ink-soft:   #4A5268;   /* muted text on paper */
  --paper:      #FAF9F6;   /* page background */
  --card:       #FFFFFF;   /* card background */
  --line:       #E4E1D8;   /* hairline border */

  --orange:     #FF6B35;   /* Tech News */
  --teal:       #2EC4B6;   /* Linux Tutorials */
  --violet:     #7B61FF;   /* Programming */
  --yellow:     #FFC93C;   /* Open Source */
  --coral:      #FF4D6D;   /* Reviews */

  --radius:     14px;
  --radius-sm:  8px;

  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body:    'Inter', 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
}

/* =========================================================
   2. RESET & BASE
   ========================================================= */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; height:auto; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; margin:0; padding:0; }
h1,h2,h3,h4{ font-family:var(--font-display); line-height:1.15; margin:0 0 .5em; font-weight:700; }
p{ margin:0 0 1.1em; }
.container{ max-width:1180px; margin:0 auto; padding:0 24px; }
:focus-visible{ outline:3px solid var(--violet); outline-offset:2px; }
@media (prefers-reduced-motion: reduce){ *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; } }

/* =========================================================
   3. TERMINAL TAG PILLS  (signature element)
   ========================================================= */
.tag-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.02em;
  padding:5px 12px 5px 10px;
  border-radius:999px;
  color:#fff;
  white-space:nowrap;
}
.tag-pill::before{ content:"$"; opacity:.7; }
.cat-linux-tutorials, .cat-linux-tutorials .tag-pill{ background:var(--teal); }
.cat-tech-news,       .cat-tech-news .tag-pill{ background:var(--orange); }
.cat-programming,     .cat-programming .tag-pill{ background:var(--violet); }
.cat-open-source,     .cat-open-source .tag-pill{ background:var(--yellow); color:var(--ink); }
.cat-reviews,         .cat-reviews .tag-pill{ background:var(--coral); }
.cat-default,         .cat-default .tag-pill{ background:var(--ink-soft); }

/* =========================================================
   4. SITE HEADER
   ========================================================= */
.site-header{
  background:var(--ink);
  color:#fff;
  position:sticky;
  top:0;
  z-index:50;
  border-bottom:4px solid var(--orange);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 0;
  gap:24px;
}
.site-branding{ display:flex; align-items:center; gap:12px; }
.site-title{
  font-family:var(--font-display);
  font-size:24px;
  font-weight:700;
  margin:0;
  color:#fff;
}
.site-title span{ color:var(--teal); }
.site-title img{ max-height:44px; }
.site-description{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--yellow);
  margin:2px 0 0;
}
.primary-nav ul{ display:flex; gap:28px; align-items:center; }
.primary-nav a{
  font-weight:600;
  font-size:14.5px;
  letter-spacing:.01em;
  padding:8px 2px;
  border-bottom:2px solid transparent;
  transition:border-color .15s ease, color .15s ease;
}
.primary-nav a:hover, .primary-nav .current-menu-item a{
  border-color:var(--teal);
  color:var(--teal);
}
.menu-toggle{
  display:none;
  background:none;
  border:2px solid #fff;
  border-radius:8px;
  color:#fff;
  font-family:var(--font-mono);
  padding:8px 12px;
  cursor:pointer;
}
@media (max-width:860px){
  .menu-toggle{ display:block; }
  .primary-nav{
    display:none;
    position:absolute; left:0; right:0; top:100%;
    background:var(--ink);
    border-bottom:4px solid var(--orange);
  }
  .primary-nav.is-open{ display:block; }
  .primary-nav ul{ flex-direction:column; padding:12px 24px 20px; gap:4px; align-items:flex-start; }
  .primary-nav a{ display:block; padding:10px 0; }
}

/* =========================================================
   5. HERO / FEATURED GRID  (front page)
   ========================================================= */
.hero-eyebrow{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--ink-soft);
  margin:36px 0 6px;
}
.hero-eyebrow::before{ content:"root@pblinuxtech:~$ "; color:var(--teal); }
.featured-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr;
  gap:24px;
  margin-bottom:48px;
}
.featured-main{
  background:var(--card);
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  display:flex;
  flex-direction:column;
}
.featured-main .thumb{ aspect-ratio:16/9; overflow:hidden; background:var(--line); }
.featured-main .thumb img{ width:100%; height:100%; object-fit:cover; }
.featured-main .body{ padding:26px; }
.featured-main h2{ font-size:30px; margin:14px 0 10px; }
.featured-side{ display:flex; flex-direction:column; gap:20px; }
.featured-side .post-card{ flex:1; }
@media (max-width:900px){
  .featured-grid{ grid-template-columns:1fr; }
}

/* =========================================================
   6. POST CARDS
   ========================================================= */
.post-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  margin-bottom:20px;
}
@media (max-width:900px){ .post-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .post-grid{ grid-template-columns:1fr; } }

.post-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:transform .15s ease, box-shadow .15s ease;
}
.post-card:hover{ transform:translateY(-3px); box-shadow:0 10px 24px rgba(19,26,43,.08); }
.post-card .thumb{ aspect-ratio:16/10; background:var(--line); overflow:hidden; }
.post-card .thumb img{ width:100%; height:100%; object-fit:cover; }
.post-card .card-body{ padding:18px 20px 20px; display:flex; flex-direction:column; gap:10px; flex:1; }
.post-card h3{ font-size:19px; }
.post-card h3 a:hover{ color:var(--orange); }
.post-card .excerpt{ color:var(--ink-soft); font-size:14.5px; margin:0; }
.meta-row{ display:flex; align-items:center; gap:10px; font-family:var(--font-mono); font-size:12px; color:var(--ink-soft); margin-top:auto; }

.section-heading{
  display:flex; align-items:baseline; justify-content:space-between;
  margin:52px 0 22px; padding-bottom:12px; border-bottom:3px solid var(--ink);
}
.section-heading h2{ font-size:24px; margin:0; }
.section-heading a{ font-family:var(--font-mono); font-size:13px; color:var(--ink-soft); }
.section-heading a:hover{ color:var(--orange); }

/* =========================================================
   7. SINGLE POST / PAGE
   ========================================================= */
.content-layout{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:48px;
  padding:44px 0 70px;
  align-items:start;
}
@media (max-width:900px){ .content-layout{ grid-template-columns:1fr; } }

.entry-header{ margin-bottom:24px; }
.entry-title{ font-size:38px; margin:14px 0 16px; }
.entry-thumb{ border-radius:var(--radius); overflow:hidden; margin-bottom:28px; aspect-ratio:16/8; background:var(--line); }
.entry-thumb img{ width:100%; height:100%; object-fit:cover; }
.entry-content{ font-size:17px; }
.entry-content h2{ font-size:26px; margin-top:1.6em; }
.entry-content h3{ font-size:21px; margin-top:1.4em; }
.entry-content p{ margin-bottom:1.3em; }
.entry-content ul, .entry-content ol{ margin:0 0 1.3em; padding-left:22px; list-style:revert; }
.entry-content blockquote{
  margin:1.6em 0; padding:16px 22px; border-left:4px solid var(--orange);
  background:#fff; border-radius:0 var(--radius-sm) var(--radius-sm) 0; font-style:italic; color:var(--ink-soft);
}
.entry-content code{ font-family:var(--font-mono); background:#EFEDE6; padding:2px 6px; border-radius:4px; font-size:.9em; }
.entry-content pre{
  background:var(--ink); color:#E9F5F3; padding:18px 20px; border-radius:var(--radius-sm);
  overflow-x:auto; font-family:var(--font-mono); font-size:14px; line-height:1.55;
}
.entry-content pre code{ background:none; padding:0; color:inherit; }
.entry-footer{ margin-top:36px; padding-top:20px; border-top:1px solid var(--line); display:flex; gap:10px; flex-wrap:wrap; align-items:center; }

.author-box{
  margin-top:44px; padding:22px; background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius); display:flex; gap:16px; align-items:flex-start;
}
.author-box img{ width:56px; height:56px; border-radius:50%; }
.author-box h4{ margin:0 0 4px; font-size:16px; }
.author-box p{ margin:0; color:var(--ink-soft); font-size:14px; }

/* =========================================================
   8. SIDEBAR
   ========================================================= */
.widget{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:22px; margin-bottom:22px; }
.widget-title{
  font-family:var(--font-mono); font-size:13px; text-transform:uppercase; letter-spacing:.06em;
  color:var(--ink-soft); margin:0 0 16px; padding-bottom:10px; border-bottom:1px solid var(--line);
}
.widget ul li{ margin-bottom:12px; padding-bottom:12px; border-bottom:1px dashed var(--line); }
.widget ul li:last-child{ border-bottom:none; margin-bottom:0; padding-bottom:0; }
.cat-list a{ display:flex; justify-content:space-between; align-items:center; font-weight:600; font-size:14.5px; }
.cat-list .count{ font-family:var(--font-mono); font-size:12px; color:var(--ink-soft); }
.search-form{ display:flex; gap:8px; }
.search-form input[type="search"]{
  flex:1; padding:10px 12px; border:1px solid var(--line); border-radius:var(--radius-sm); font-family:var(--font-body);
}
.search-form button{
  background:var(--orange); color:#fff; border:none; border-radius:var(--radius-sm); padding:0 16px; font-weight:700; cursor:pointer;
}

/* =========================================================
   9. ARCHIVE / CATEGORY BANNER
   ========================================================= */
.archive-banner{ padding:52px 0 30px; color:#fff; }
.archive-banner .container{ }
.archive-banner .eyebrow{ font-family:var(--font-mono); font-size:13px; opacity:.85; margin-bottom:8px; }
.archive-banner h1{ font-size:36px; margin:0 0 10px; }
.archive-banner p{ max-width:640px; opacity:.92; margin:0; }
.archive-list{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; padding:40px 0 70px; }
@media (max-width:900px){ .archive-list{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .archive-list{ grid-template-columns:1fr; } }

/* =========================================================
   10. PAGINATION / FORMS / MISC
   ========================================================= */
.pagination{ display:flex; gap:8px; justify-content:center; padding:10px 0 60px; flex-wrap:wrap; }
.pagination a, .pagination span{
  font-family:var(--font-mono); font-size:14px; padding:8px 14px; border:1px solid var(--line);
  border-radius:var(--radius-sm); background:var(--card);
}
.pagination .current{ background:var(--ink); color:#fff; border-color:var(--ink); }
.pagination a:hover{ border-color:var(--orange); color:var(--orange); }

.comment-form input, .comment-form textarea{
  width:100%; padding:12px 14px; border:1px solid var(--line); border-radius:var(--radius-sm);
  font-family:var(--font-body); margin-bottom:14px;
}
.comment-form button{
  background:var(--ink); color:#fff; border:none; padding:12px 24px; border-radius:var(--radius-sm);
  font-weight:700; cursor:pointer;
}
.comment-form button:hover{ background:var(--orange); }
.comment-list{ margin-top:20px; }
.comment-list li{ margin-bottom:20px; padding-bottom:20px; border-bottom:1px solid var(--line); }

.error-404{ text-align:center; padding:100px 0; }
.error-404 h1{ font-family:var(--font-mono); font-size:96px; color:var(--orange); margin:0; }

/* =========================================================
   11. FOOTER
   ========================================================= */
.site-footer{ background:var(--ink); color:#DDE1EA; margin-top:60px; padding:50px 0 24px; }
.footer-grid{ display:grid; grid-template-columns:2fr 1fr 1fr; gap:36px; margin-bottom:36px; }
@media (max-width:700px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-grid h4{ color:#fff; font-family:var(--font-mono); font-size:13px; text-transform:uppercase; letter-spacing:.06em; margin-bottom:16px; }
.footer-grid p{ color:#B3B9C8; font-size:14.5px; }
.footer-grid ul li{ margin-bottom:10px; }
.footer-grid a:hover{ color:var(--teal); }
.footer-bottom{ border-top:1px solid #2A3350; padding-top:20px; font-size:13px; color:#8890A3; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; }
.footer-bottom span{ font-family:var(--font-mono); color:var(--yellow); }

/* Screen-reader only text */
.screen-reader-text{ position:absolute !important; clip:rect(1px,1px,1px,1px); overflow:hidden; height:1px; width:1px; }