/* Saurabh Web Solutions — public site styles (no framework, system fonts, light + dark) */
:root {
  --bg: #ffffff; --bg2: #f6f7fb; --card: #ffffff; --text: #111827; --muted: #5b6475; --line: #e5e7ef;
  --brand: #2563eb; --brand-2: #1d4ed8; --brand-soft: #eaf1ff; --accent: #f59e0b; --yt: #e62117; --ok: #059669;
  --radius: 14px; --shadow: 0 1px 2px rgba(16,24,40,.05), 0 8px 24px rgba(16,24,40,.06);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d1117; --bg2: #121823; --card: #151c28; --text: #e6e9ef; --muted: #9aa4b5; --line: #253041;
          --brand: #5b8cff; --brand-2: #7aa2ff; --brand-soft: #18233a; --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.25); }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.65 var(--font); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-underline-offset: 3px; }
a:hover { color: var(--brand-2); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 1.75rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; justify-content: center; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--brand); color: #fff; padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; border-radius: 4px; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 10px; border: 1px solid var(--line);
       background: var(--card); color: var(--text); font: 600 .95rem/1.2 var(--font); text-decoration: none; cursor: pointer; transition: .15s; white-space: nowrap; }
.btn:hover { border-color: var(--brand); color: var(--brand); }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-2); color: #fff; }
.btn-yt { background: var(--yt); border-color: var(--yt); color: #fff; }
.btn-yt:hover { background: #c4170f; border-color: #c4170f; color: #fff; }
.btn-ghost { background: transparent; }
.btn.sm { padding: 8px 14px; font-size: .85rem; }

/* header */
.site-head { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; gap: 24px; height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); text-decoration: none; letter-spacing: -.01em; }
.logo { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 9px; background: linear-gradient(135deg, var(--brand), #7c3aed); color: #fff; font-size: .8rem; font-weight: 800; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 8px; color: var(--muted); text-decoration: none; font-weight: 600; font-size: .95rem; }
.nav a:hover, .nav a[aria-current] { color: var(--text); background: var(--bg2); }
.site-head .btn-yt { padding: 9px 14px; }
.mnav { display: none; position: relative; }
.mnav summary { list-style: none; cursor: pointer; display: grid; gap: 5px; padding: 10px; }
.mnav summary::-webkit-details-marker { display: none; }
.mnav summary span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }
.mnav nav { position: absolute; right: 0; top: 48px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); padding: 8px; display: grid; min-width: 200px; }
.mnav nav a { padding: 10px 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-weight: 600; }
.mnav nav a[aria-current] { background: var(--brand-soft); color: var(--brand); }
@media (max-width: 860px) {
  .nav { display: none; }
  .mnav { display: block; }
  .site-head .btn-yt { margin-left: auto; }
}
@media (max-width: 420px) { .site-head .btn-yt span { display: none; } .brand span:last-child { font-size: .95rem; } }

/* hero + sections */
.hero { padding: 72px 0 56px; background: radial-gradient(1200px 400px at 10% -10%, var(--brand-soft), transparent 70%), var(--bg); border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--brand); font-weight: 700; font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; }
.hero h1 { max-width: 820px; }
.hl { background: linear-gradient(90deg, var(--brand), #7c3aed); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 680px; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 28px; list-style: none; padding: 0; margin: 32px 0 0; color: var(--muted); }
.hero-stats b { color: var(--text); font-size: 1.3rem; margin-right: 4px; }
.section { padding: 56px 0; }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.sec-head h2 { margin: 0; }
.empty { padding: 40px; text-align: center; color: var(--muted); background: var(--bg2); border-radius: var(--radius); }
.page-head { padding: 40px 0 8px; }
.page-head h1 { margin-top: 10px; }
.crumbs { font-size: .88rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs span[aria-current] { color: var(--text); }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.card { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: .2s; }
.card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.card-img { aspect-ratio: 16 / 9; background: var(--bg2); overflow: hidden; display: block; }
.card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-ph { display: grid; place-items: center; height: 100%; font-size: 3rem; font-weight: 800; color: var(--brand); background: var(--brand-soft); }
.card-body { padding: 18px 20px 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { margin: 8px 0; }
.card-body h3 a { color: var(--text); text-decoration: none; }
.card-body h3 a:hover { color: var(--brand); }
.card-body p { color: var(--muted); font-size: .95rem; margin-bottom: 12px; }
.card-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; font-size: .82rem; color: var(--muted); }
.tag { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--brand-soft); color: var(--brand); font-size: .78rem; font-weight: 700; text-decoration: none; }
.card-flags { display: flex; gap: 14px; margin-top: auto; font-size: .82rem; color: var(--muted); font-weight: 600; }
.card-flags span { display: inline-flex; align-items: center; gap: 5px; }
.card-flags svg { width: 15px; height: 15px; }
.has-files { color: var(--ok); }
.grid-ad { grid-column: 1 / -1; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 28px; }
.chip { display: inline-flex; gap: 6px; align-items: center; padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--text); text-decoration: none; font-weight: 600; font-size: .9rem; }
.chip span { color: var(--muted); font-weight: 500; }
.chip:hover { border-color: var(--brand); color: var(--brand); }
.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 36px; font-weight: 600; }

/* ads — always labelled, separated from content and buttons */
.ad { margin: 44px 0; padding-top: 6px; min-height: 120px; text-align: center; clear: both; }
.ad-label { display: block; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.grid-ad .ad { margin: 8px 0; }

/* post */
.post-head { padding: 36px 0 8px; }
.post-head .tag { margin: 14px 0 10px; }
.post-head h1 { margin: 10px 0 16px; }
.post-meta { display: flex; align-items: center; gap: 12px; color: var(--muted); font-size: .92rem; }
.post-meta img { border-radius: 50%; }
.jump { display: inline-flex; align-items: center; gap: 8px; margin-top: 4px; padding: 8px 14px; border-radius: 10px; background: color-mix(in srgb, var(--ok) 12%, transparent); color: var(--ok); font-weight: 700; font-size: .9rem; text-decoration: none; }
.jump svg { width: 16px; height: 16px; }
.post-media { margin: 24px 0; }
.post-media img { border-radius: var(--radius); }
.post-media figcaption { font-size: .85rem; color: var(--muted); margin-top: 8px; text-align: center; }
.yt { position: relative; aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; background: #000; }
.yt-play, .yt iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; display: block; }
.yt-play img { width: 100%; height: 100%; object-fit: cover; opacity: .92; }
.yt-btn { position: absolute; inset: 0; display: grid; place-items: center; }
.yt-btn svg { width: 72px; height: 50px; transition: transform .15s; filter: drop-shadow(0 4px 14px rgba(0,0,0,.4)); }
.yt-play:hover .yt-btn svg { transform: scale(1.08); }
.toc { margin: 24px 0 32px; padding: 16px 20px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg2); }
.toc summary { font-weight: 700; cursor: pointer; }
.toc ol { margin: 10px 0 0; padding-left: 20px; }
.toc li { margin: 4px 0; }
.toc .l3 { margin-left: 16px; list-style: circle; font-size: .94rem; }
.toc a { color: var(--text); text-decoration: none; }
.toc a:hover { color: var(--brand); }

.prose { font-size: 1.06rem; overflow-wrap: break-word; }
.prose h2 { margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose img { border-radius: 10px; margin: 1.2em auto; border: 1px solid var(--line); }
.prose ul, .prose ol { padding-left: 1.4em; margin: 0 0 1em; }
.prose li { margin: .35em 0; }
.prose blockquote { margin: 1.4em 0; padding: 12px 18px; border-left: 4px solid var(--brand); background: var(--bg2); border-radius: 0 10px 10px 0; }
.prose code { font: .9em var(--mono); background: var(--bg2); border: 1px solid var(--line); padding: 1px 6px; border-radius: 6px; }
.prose pre, .prose .ql-code-block-container { font: .88rem/1.6 var(--mono); background: #0f172a; color: #e2e8f0; padding: 16px 18px; border-radius: 10px; overflow-x: auto; margin: 1.2em 0; white-space: pre; position: relative; }
.prose pre code { background: none; border: 0; padding: 0; color: inherit; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: .95rem; display: block; overflow-x: auto; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.prose iframe { width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: 10px; }
.copy-code { position: absolute; top: 8px; right: 8px; font: 600 .75rem var(--font); padding: 4px 10px; border-radius: 6px; border: 1px solid #334155; background: #1e293b; color: #e2e8f0; cursor: pointer; }

/* download box */
.downloads { margin: 48px 0; padding: 26px; border: 2px solid color-mix(in srgb, var(--ok) 40%, var(--line)); border-radius: 18px; background: color-mix(in srgb, var(--ok) 5%, var(--card)); }
.downloads h2 { margin-top: 0; }
.dl-note { color: var(--muted); font-size: .92rem; }
.dl-list { list-style: none; padding: 0; margin: 16px 0; display: grid; gap: 12px; }
.dl-item { display: flex; align-items: center; gap: 14px; padding: 14px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.dl-ext { flex: none; display: grid; place-items: center; width: 50px; height: 50px; border-radius: 10px; background: var(--brand-soft); color: var(--brand); font: 800 .72rem var(--font); letter-spacing: .03em; }
.dl-ext.sm { width: 34px; height: 24px; border-radius: 6px; font-size: .6rem; display: inline-grid; margin-right: 8px; vertical-align: middle; }
.dl-info { flex: 1; min-width: 0; display: grid; }
.dl-info b { overflow-wrap: anywhere; }
.dl-info span { color: var(--muted); font-size: .85rem; overflow-wrap: anywhere; }
.btn-dl { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn-dl:hover { background: #047857; border-color: #047857; color: #fff; }
.dl-help { font-size: .88rem; color: var(--muted); margin: 0; }
@media (max-width: 560px) { .dl-item { flex-wrap: wrap; } .btn-dl { width: 100%; justify-content: center; } .downloads { padding: 18px; } }

.faq { margin: 40px 0; }
.faq details { border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; margin-bottom: 10px; background: var(--card); }
.faq summary { font-weight: 700; cursor: pointer; }
.faq details p { margin: 10px 0 0; color: var(--muted); }
.post-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.post-tags span { font-size: .85rem; color: var(--muted); background: var(--bg2); padding: 4px 10px; border-radius: 999px; }
.author { display: flex; gap: 18px; align-items: flex-start; margin: 40px 0; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg2); }
.author img { border-radius: 50%; flex: none; }
.author p { margin-bottom: 10px; color: var(--muted); font-size: .95rem; }
.author .foot-h { color: var(--text); }
.related { background: var(--bg2); border-top: 1px solid var(--line); }

/* downloads library, about, contact */
.lib { display: grid; gap: 16px; }
.lib-item { display: flex; gap: 20px; align-items: center; justify-content: space-between; padding: 20px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
.lib-item h2 { font-size: 1.15rem; margin: 8px 0; }
.lib-item h2 a { color: var(--text); text-decoration: none; }
.lib-files { list-style: none; padding: 0; margin: 0; font-size: .92rem; display: grid; gap: 6px; }
@media (max-width: 640px) { .lib-item { flex-direction: column; align-items: stretch; } }
.about-card { display: flex; gap: 16px; align-items: center; margin-bottom: 24px; }
.about-card img { border-radius: 50%; }
.about-card div { display: grid; }
.contact { display: grid; gap: 16px; }
.contact label { display: grid; gap: 6px; font-weight: 600; font-size: .95rem; }
.contact input, .contact select, .contact textarea { font: inherit; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); width: 100%; }
.contact input:focus, .contact select:focus, .contact textarea:focus { outline: 2px solid var(--brand); border-color: transparent; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.hp { position: absolute !important; left: -9999px; }
.form-status { margin: 0; font-weight: 600; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: #dc2626; }
.contact .btn { justify-self: start; }
.notfound { padding: 100px 0; }

/* footer */
.site-foot { border-top: 1px solid var(--line); background: var(--bg2); padding: 48px 0 24px; margin-top: 40px; font-size: .94rem; }
.related + .site-foot { margin-top: 0; }
.foot-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width: 860px) { .foot-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .foot-grid { grid-template-columns: 1fr; } }
.foot-h { font-weight: 700; margin-bottom: 10px; color: var(--text); }
.site-foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-foot ul a { color: var(--muted); text-decoration: none; }
.site-foot ul a:hover { color: var(--brand); }
.site-foot .brand { margin-bottom: 12px; }
.socials { display: flex; gap: 10px; }
.socials a { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); color: var(--muted); background: var(--card); }
.socials a:hover { color: var(--brand); border-color: var(--brand); }
.socials svg { width: 18px; height: 18px; }
.foot-bot { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.foot-bot nav { display: flex; flex-wrap: wrap; gap: 16px; }
.foot-bot a { color: var(--muted); }
.foot-bot p { margin: 0; }
.preview-bar { position: sticky; top: 0; z-index: 60; background: var(--accent); color: #111; text-align: center; font-weight: 700; padding: 8px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }