/* ============================================================
   TECH VEDA — Hybrid blog (listing + single). Scoped under .tvb
   ============================================================ */
.tvb{
 --navy:#15153a;--navy-2:#1f1f4d;--navy-3:#2a2a5e;--orange:#E8730C;--orange-dark:#c75f06;
 --light:#F6F7F9;--light-2:#eef0f4;--line:#e4e6ec;--text:#23242b;--muted:#5b5c66;--white:#fff;
 --green:#1f9d57;--red:#d83a3a;--blue:#2f6fed;--maxw:1180px;--mono:'JetBrains Mono',ui-monospace,monospace;
 --shadow:0 10px 30px rgba(21,21,58,.08);--shadow-lg:0 20px 50px rgba(21,21,58,.14);
 font-family:'Inter',system-ui,sans-serif;color:var(--text);line-height:1.6;background:var(--white)
}
.tvb *{box-sizing:border-box}
.tvb h1,.tvb h2,.tvb h3,.tvb h4{font-family:'Sora','Inter',sans-serif;line-height:1.2;color:var(--navy);margin:0}
.tvb a{color:inherit;text-decoration:none}
.tvb img{max-width:100%;display:block;height:auto}
.tvb-wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.tvb-mono,.tvb .tvb-mono{font-family:var(--mono)}

/* thumbnails (image or on-brand placeholder) */
.tvb-thumb{position:relative;overflow:hidden;background:var(--light-2);aspect-ratio:16/9}
.tvb-thumb img{width:100%;height:100%;object-fit:cover}
.tvb-thumb.tall{aspect-ratio:16/10}
.tvb-thumb.placeholder{background:
 radial-gradient(120% 120% at 80% 10%,rgba(232,115,12,.34),transparent 55%),
 linear-gradient(150deg,var(--navy-3),var(--navy))}
.tvb-thumb.placeholder::after{content:"";position:absolute;inset:0;background-image:
 linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px),
 linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px);background-size:32px 32px;mask:radial-gradient(120% 120% at 70% 30%,#000,transparent 78%)}
.tvb-thumb .tvb-dot{position:absolute;left:50%;top:50%;width:13px;height:13px;border-radius:50%;background:var(--orange);box-shadow:0 0 28px 8px rgba(232,115,12,.5);transform:translate(-50%,-50%)}
.tvb-chip{position:absolute;left:14px;top:14px;font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;padding:5px 11px;border-radius:999px;background:rgba(21,21,58,.72);color:#fff;backdrop-filter:blur(4px)}

/* ---------- listing ---------- */
.tvb-mast{padding:46px 0 8px}
.tvb-mast .tvb-crumb{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin-bottom:14px}
.tvb-mast .tvb-crumb b{color:var(--orange)}
.tvb-mast h1{font-size:clamp(32px,4.6vw,48px);letter-spacing:-.015em;margin-bottom:10px;max-width:20ch}
.tvb-mast>.tvb-wrap>p{font-size:17.5px;color:var(--muted);max-width:62ch}

.tvb-lead{display:grid;grid-template-columns:1.18fr 1fr;gap:32px;align-items:center;padding:34px 0 40px;margin-top:18px;border-top:2px solid var(--navy)}
.tvb-lead-media{display:block;border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.tvb-lead-media .tvb-thumb{border-radius:16px}
.tvb-cat{font-family:var(--mono);color:var(--cc,var(--orange));font-weight:600;font-size:12px;letter-spacing:.05em;text-transform:uppercase}
.tvb-lead h2{font-size:clamp(25px,3.2vw,36px);margin:11px 0 14px;letter-spacing:-.01em}
.tvb-lead h2 a:hover{color:var(--orange)}
.tvb-ex{font-family:'Fraunces',Georgia,serif;font-size:18.5px;color:#34353f;line-height:1.55}
.tvb-byline{display:flex;align-items:center;gap:10px;margin-top:18px;color:var(--muted);font-size:13px;font-family:var(--mono)}
.tvb-av{width:30px;height:30px;border-radius:50%;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;font-family:'Inter';flex:0 0 auto}
.tvb-read{margin-top:18px;display:inline-flex;align-items:center;gap:7px;font-weight:700;color:var(--navy)}
.tvb-read .ar{color:var(--orange)}

.tvb-filters{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tvb-filter-row{display:flex;gap:9px;align-items:center;padding:14px 24px;overflow-x:auto}
.tvb-lbl{font-family:var(--mono);font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;flex:0 0 auto}
.tvb-pill{flex:0 0 auto;font-size:13.5px;font-weight:600;padding:8px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--navy)}
.tvb-pill:hover{border-color:var(--navy)}
.tvb-pill.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.tvb-pill .d{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:7px;vertical-align:1px}

.tvb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;padding:34px 0 20px}
.tvb-card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:.18s}
.tvb-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.tvb-card-link{display:flex;flex-direction:column;height:100%}
.tvb-card .tvb-card-body{padding:17px 18px 19px;display:flex;flex-direction:column;flex:1}
.tvb-card h3{font-size:18.5px;margin:7px 0 8px;letter-spacing:-.01em}
.tvb-card:hover h3{color:var(--orange)}
.tvb-card p{color:var(--muted);font-size:14px;flex:1;margin:0}
.tvb-foot{display:flex;align-items:center;gap:9px;margin-top:14px;color:var(--muted);font-size:12px;font-family:var(--mono)}
.tvb-foot .tvb-av{width:23px;height:23px;font-size:10px}

.tvb-pagination{padding:14px 0 6px}
.tvb-pagination .nav-links{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}
.tvb-pagination .page-numbers{display:inline-flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 12px;border:1px solid var(--line);border-radius:10px;font-weight:600;font-size:14px;color:var(--navy)}
.tvb-pagination .page-numbers.current{background:var(--navy);color:#fff;border-color:var(--navy)}
.tvb-pagination .page-numbers:hover{border-color:var(--navy)}
.tvb-empty{padding:40px 0;color:var(--muted)}

.tvb-news{background:linear-gradient(160deg,var(--navy-2),var(--navy));color:#fff;border-radius:20px;padding:38px 40px;margin:34px 0 60px;display:grid;grid-template-columns:1.2fr 1fr;gap:28px;align-items:center}
.tvb-news h3{color:#fff;font-size:24px;margin-bottom:8px}
.tvb-news p{color:#c7c8e4;font-size:15px;margin:0}
.tvb-news-f{display:flex;gap:9px}
.tvb-news-f input{flex:1;min-width:0;border:0;border-radius:10px;padding:13px 14px;font-size:14px}
.tvb-news-f button{background:var(--orange);color:#fff;border:0;border-radius:10px;padding:0 22px;font-weight:700;cursor:pointer}
.tvb-news small{display:block;margin-top:9px;color:#9092c0;font-family:var(--mono);font-size:11px}

/* ---------- single ---------- */
.tvb-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--orange);z-index:9999}
.tvb-ahead{background:var(--light);border-bottom:1px solid var(--line)}
.tvb-ahead .tvb-wrap{max-width:840px;padding-top:30px;padding-bottom:34px}
.tvb-crumb{font-family:var(--mono);font-size:12.5px;color:var(--muted);margin-bottom:16px}
.tvb-crumb b,.tvb-crumb a:hover{color:var(--orange)}
.tvb-cattag{display:inline-block;font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--cc,var(--orange));background:#fff;border:1px solid var(--line);padding:4px 10px;border-radius:6px}
.tvb-title{font-size:clamp(28px,4.2vw,42px);letter-spacing:-.015em;margin:14px 0 12px!important}
.tvb-dek{font-family:'Fraunces',Georgia,serif;font-size:20px;color:#3a3b46;line-height:1.5;margin:0}
.tvb-ahead .tvb-byline{font-family:'Inter';font-size:13.5px;color:var(--muted)}
.tvb-ahead .tvb-byline .tvb-av{width:38px;height:38px;font-size:14px}
.tvb-ahead .tvb-byline b{color:var(--navy);font-weight:600}
.tvb-ahead .tvb-byline .tvb-mono{font-family:var(--mono);font-size:12.5px}

.tvb-heroimg{max-width:980px;margin:-22px auto 0;padding:0 24px}
.tvb-heroimg .tvb-heroimg-img,.tvb-heroimg img{width:100%;border-radius:16px;box-shadow:var(--shadow-lg);aspect-ratio:16/8;object-fit:cover}

.tvb-shell{display:grid;grid-template-columns:230px minmax(0,1fr);gap:48px;padding:44px 24px 60px}
.tvb-toc{position:sticky;top:90px;align-self:start}
.tvb-toc h5{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.tvb-toc nav a{display:block;font-size:13.5px;color:var(--muted);padding:6px 0 6px 13px;border-left:2px solid var(--line);line-height:1.35}
.tvb-toc nav a.active{color:var(--navy);font-weight:600;border-left-color:var(--orange)}
.tvb-toc nav a:hover{color:var(--navy)}
.tvb-toc nav a.lvl-3{padding-left:26px;font-size:13px}
.tvb-toc nav a.lvl-4{padding-left:38px;font-size:12.5px;color:#7b7c86}
.tvb-share{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);display:flex;gap:8px}
.tvb-share a span{width:34px;height:34px;border-radius:9px;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px}
.tvb-share a:hover span{border-color:var(--navy);color:var(--navy)}

/* article body typography */
.tvb-post{max-width:720px;min-width:0}
.tvb-post>p{margin:0 0 18px;font-size:17px;color:#2b2c34}
.tvb-post h2{font-size:26px;margin:38px 0 14px;scroll-margin-top:90px;padding-left:14px;border-left:4px solid var(--orange)}
.tvb-post h3{font-size:20px;margin:28px 0 10px}
.tvb-post ul,.tvb-post ol{margin:0 0 18px 22px}
.tvb-post li{margin-bottom:8px;font-size:17px}
.tvb-post a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.tvb-post img{border-radius:12px;margin:18px 0}
.tvb-post code{font-family:var(--mono);font-size:14px;background:var(--light-2);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:var(--navy)}
.tvb-post pre{background:#16162e;color:#e6e7f5;border-radius:12px;padding:18px 20px;overflow:auto;margin:0 0 20px;border:1px solid #2a2a4d}
.tvb-post pre code{font-family:var(--mono);font-size:13.5px;background:none;border:0;padding:0;color:inherit;line-height:1.6}
.tvb-post blockquote{border-left:4px solid var(--orange);background:var(--light);padding:16px 22px;border-radius:0 12px 12px 0;margin:24px 0;font-family:'Fraunces',Georgia,serif;font-size:20px;color:var(--navy);line-height:1.45}
.tvb-post blockquote p{margin:0}

.tvb-author{display:flex;gap:16px;align-items:center;background:linear-gradient(160deg,var(--navy-2),var(--navy));color:#fff;border-radius:16px;padding:22px 24px;margin:36px 0 0}
.tvb-av-lg{width:54px;height:54px;border-radius:50%;background:#fff;color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;flex:0 0 auto}
.tvb-author b{font-size:16px}.tvb-author p{color:#c7c8e4;font-size:13.5px;margin:3px 0 0}
.tvb-author .tvb-pill{margin-left:auto;background:var(--orange);color:#fff;font-weight:700;font-size:13px;padding:9px 15px;border-radius:9px;border:0;flex:0 0 auto}

.tvb-related{border-top:1px solid var(--line);padding:40px 0 60px;background:var(--light);margin-top:40px}
.tvb-related h3{font-size:14px;letter-spacing:.1em;text-transform:uppercase;color:var(--navy);margin-bottom:20px}
.tvb-rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.tvb-rcard{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;display:block}
.tvb-rcard .tvb-thumb{aspect-ratio:16/9}
.tvb-rcard .b{padding:15px 16px 17px}
.tvb-rcard .cat{font-family:var(--mono);font-size:11px;color:var(--orange);text-transform:uppercase;letter-spacing:.04em}
.tvb-rcard h4{font-size:16px;margin-top:6px}
.tvb-rcard:hover h4{color:var(--orange)}

/* ---------- responsive ---------- */
@media(max-width:980px){.tvb-lead{grid-template-columns:1fr}}
@media(max-width:940px){.tvb-shell{grid-template-columns:1fr;gap:0}.tvb-toc{display:none}}
@media(max-width:920px){.tvb-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.tvb-rgrid{grid-template-columns:1fr}.tvb-news{grid-template-columns:1fr;padding:28px}}
@media(max-width:600px){.tvb-grid{grid-template-columns:1fr}.tvb-lead{gap:22px}}

/* ---------- read-only article: deter copy/select on blog posts (deterrent only) ---------- */
.tvb-post,.tvb-title,.tvb-dek{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
.tvb-post img{-webkit-user-drag:none;user-drag:none}

/* ---------- single-post: mobile / tablet refinements ---------- */
@media(max-width:640px){
  .tvb-shell{padding:28px 16px 46px}
  .tvb-ahead .tvb-wrap{padding-top:22px;padding-bottom:24px}
  .tvb-heroimg{padding:0 16px;margin-top:-10px}
  .tvb-heroimg .tvb-heroimg-img,.tvb-heroimg img{aspect-ratio:16/10}
  .tvb-dek{font-size:16.5px}
  .tvb-post>p,.tvb-post li{font-size:16px}
  .tvb-post h2{font-size:21px;margin:30px 0 12px;padding-left:11px;border-left-width:3px}
  .tvb-post h3{font-size:18px;margin:22px 0 9px}
  /* terminal / command blocks: scroll inside the box, never push the page wide */
  .tvb-post pre{padding:13px 14px;border-radius:10px;font-size:12.5px;overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%}
  .tvb-post pre code{font-size:12.5px}
  .tvb-post code{font-size:13px;word-break:break-word}
  .tvb-post blockquote{font-size:18px;padding:14px 16px}
  /* author "RB" card: avatar+name on row 1, follow button full-width below */
  .tvb-author{flex-wrap:wrap;gap:12px 14px;padding:18px;align-items:center}
  .tvb-author>div{flex:1 1 auto;min-width:0}
  .tvb-av-lg{width:46px;height:46px;font-size:17px}
  .tvb-author .tvb-pill{margin-left:0;flex:1 1 100%;text-align:center;padding:11px 15px}
}