/* =====================================================================
   Programming Line — site-wide UI layer on top of Pixwell (v2)
   Scoped to body.pl-ui so it can be switched off with PL_UI_V2=false.
   ===================================================================== */
:root{
  --pl-primary:#4f46e5; --pl-primary-d:#4338ca; --pl-primary-l:#eef2ff;
  --pl-accent:#16a34a; --pl-accent-l:#dcfce7; --pl-warn:#f59e0b;
  --pl-ink:#0f172a; --pl-text:#334155; --pl-muted:#64748b; --pl-line:#e2e8f0;
  --pl-bg:#f8fafc; --pl-card:#ffffff; --pl-radius:14px;
  --pl-shadow:0 1px 2px rgba(15,23,42,.06),0 4px 16px rgba(15,23,42,.06);
  --pl-shadow-h:0 8px 28px rgba(15,23,42,.12);
  --pl-font:"Open Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --pl-mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,monospace;
  --pl-header-h:68px;
}
body.pl-ui{color:var(--pl-text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body.pl-ui h1,body.pl-ui h2,body.pl-ui h3,body.pl-ui h4,body.pl-ui h5,body.pl-ui h6{color:var(--pl-ink)}
body.pl-ui ::selection{background:#c7d2fe;color:var(--pl-ink)}
body.pl-ui :focus-visible{outline:3px solid #a5b4fc;outline-offset:2px;border-radius:6px}
html{scroll-padding-top:calc(var(--pl-header-h) + 16px)}

/* ---------- Header: clean white bar ---------- */
body.pl-ui .topbar-wrap{display:none}
body.pl-ui .navbar-wrap:not(.transparent-navbar-wrap),
body.pl-ui #mobile-sticky-nav{background:#fff!important;background-image:none!important;color:var(--pl-ink)!important;
  box-shadow:0 1px 0 var(--pl-line)}
body.pl-ui .navbar-inner{min-height:var(--pl-header-h)}
body.pl-ui .navbar-holder.is-main-nav{max-width:1320px}
body.pl-ui .navbar-left .logo-wrap img,body.pl-ui .navbar-left .logo-wrap .logo img{max-height:44px;width:auto;border-radius:10px}
body.pl-ui .logo-mobile img{max-height:38px!important;width:auto;border-radius:8px}
body.pl-ui .logo-wrap .logo-title,body.pl-ui .logo-wrap .site-description{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
body.pl-ui .main-menu > li > a{color:var(--pl-ink)!important;font-size:14.5px;font-weight:600;letter-spacing:0;padding:0 14px;
  height:var(--pl-header-h);line-height:var(--pl-header-h);position:relative}
body.pl-ui .main-menu > li > a:hover,body.pl-ui .main-menu > li.current-menu-item > a,body.pl-ui .main-menu > li.current-menu-ancestor > a{color:var(--pl-primary)!important}
body.pl-ui .main-menu > li.current-menu-item > a:after,body.pl-ui .main-menu > li.current-menu-ancestor > a:after{content:"";position:absolute;left:14px;right:14px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--pl-primary)}
body.pl-ui .main-menu{--subnav-bg-from:#fff;--subnav-bg-to:#fff}
body.pl-ui .main-menu .sub-menu{background:#fff!important;background-image:none!important;border:1px solid var(--pl-line);border-radius:12px;
  box-shadow:var(--pl-shadow-h);padding:8px;min-width:250px}
body.pl-ui .main-menu .sub-menu a{color:var(--pl-text)!important;border-radius:8px;padding:8px 12px;font-size:14px;font-weight:500}
body.pl-ui .main-menu .sub-menu a:hover{background:var(--pl-primary-l);color:var(--pl-primary)!important}
body.pl-ui .navbar-right,body.pl-ui .navbar-right a,body.pl-ui .m-nav-right a,body.pl-ui .m-nav-left a,
body.pl-ui .mobile-navbar,body.pl-ui .btn-toggle-wrap{color:var(--pl-ink)!important}
body.pl-ui .mobile-navbar{background:#fff!important;background-image:none!important;box-shadow:0 1px 0 var(--pl-line)}
body.pl-ui .icon-toggle,body.pl-ui .icon-toggle:before,body.pl-ui .icon-toggle:after{background-color:var(--pl-ink)!important}
body.pl-ui .navbar-right .nav-search-link,body.pl-ui .m-nav-right .nav-search-link{display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:10px;background:var(--pl-bg);border:1px solid var(--pl-line)}
body.pl-ui .navbar-right .nav-search-link:hover{border-color:var(--pl-primary);color:var(--pl-primary)!important}
/* Header CTA (last menu item gets class pl-menu-cta) */
body.pl-ui .main-menu > li.pl-menu-cta > a{height:auto;line-height:1;margin:0 0 0 8px;padding:11px 18px;border-radius:10px;
  background:var(--pl-primary);color:#fff!important}
body.pl-ui .main-menu > li.pl-menu-cta > a:hover{background:var(--pl-primary-d)}
body.pl-ui .main-menu > li.pl-menu-cta > a:after{display:none}

/* Off-canvas (mobile) menu */
body.pl-ui .off-canvas-wrap .off-canvas-menu a,body.pl-ui .off-canvas-wrap .main-menu a{font-size:16px;font-weight:600;color:var(--pl-ink)}
body.pl-ui .off-canvas-wrap .sub-menu a{font-weight:500;font-size:15px;color:var(--pl-text)}

/* ---------- Generic content polish (blog/pages) ---------- */
body.pl-ui .entry-content a:not(.rb-btn):not(.pl-btn){color:var(--pl-primary);text-underline-offset:3px}
body.pl-ui .entry-content img{border-radius:10px}
body.pl-ui .entry-content pre{overflow-x:auto;max-width:100%}
body.pl-ui .entry-content table{display:block;overflow-x:auto;max-width:100%}
body.pl-ui .single .entry-content,body.pl-ui .page .entry-content{font-size:17px;line-height:1.75}

/* ---------- Footer ---------- */
body.pl-ui .footer-wrap.is-bg{background:#0b1120!important}
body.pl-ui .footer-copyright{font-size:13px;line-height:1.7;opacity:.85}
body.pl-ui .footer-menu-wrap a,body.pl-ui .footer-menu a{font-weight:600;font-size:13.5px}

/* ---------- Shared components ---------- */
.pl-container{max-width:1240px;margin:0 auto;padding:0 24px}
.pl-btn{display:inline-flex;align-items:center;gap:8px;border-radius:12px;padding:13px 22px;font-weight:700;font-size:15.5px;line-height:1.2;
  text-decoration:none!important;border:1.5px solid transparent;transition:background .15s,transform .15s,box-shadow .15s;cursor:pointer}
.pl-btn--primary{background:var(--pl-primary);color:#fff!important;box-shadow:0 6px 18px rgba(79,70,229,.28)}
.pl-btn--primary:hover{background:var(--pl-primary-d);transform:translateY(-1px)}
.pl-btn--ghost{background:#fff;color:var(--pl-ink)!important;border-color:var(--pl-line)}
.pl-btn--ghost:hover{border-color:var(--pl-primary);color:var(--pl-primary)!important}
.pl-btn--light{background:rgba(255,255,255,.12);color:#fff!important;border-color:rgba(255,255,255,.3)}
.pl-btn--light:hover{background:rgba(255,255,255,.2)}
.pl-btn .pl-i{flex:0 0 auto}
.pl-chip{display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;font-size:12.5px;font-weight:700;
  background:var(--pl-primary-l);color:var(--pl-primary-d);letter-spacing:.01em}
.pl-dot{width:4px;height:4px;border-radius:50%;background:currentColor;opacity:.5;display:inline-block}
.pl-bar{display:block;height:6px;border-radius:6px;background:var(--pl-line);overflow:hidden}
.pl-bar > span{display:block;height:100%;width:0;background:var(--pl-accent);border-radius:6px;transition:width .4s}
.pl-badge{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:40px;height:40px;border-radius:11px;
  background:var(--c,#4f46e5);color:#fff;font:800 13px/1 var(--pl-font);letter-spacing:-.02em;box-shadow:inset 0 -2px 0 rgba(0,0,0,.15)}
.pl-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 22px}
.pl-sec-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.2;margin:0;font-weight:800;letter-spacing:-.02em}
.pl-sec-head p{margin:6px 0 0;color:var(--pl-muted);font-size:15.5px}
.pl-sec-head a{font-weight:700;color:var(--pl-primary);text-decoration:none;white-space:nowrap}
.pl-card{background:var(--pl-card);border:1px solid var(--pl-line);border-radius:var(--pl-radius);box-shadow:var(--pl-shadow);
  transition:transform .18s,box-shadow .18s,border-color .18s}
a.pl-card{text-decoration:none!important;color:inherit}
a.pl-card:hover{transform:translateY(-3px);box-shadow:var(--pl-shadow-h);border-color:color-mix(in srgb,var(--c,#4f46e5) 45%,#fff)}

/* Course card */
.pl-ccard{display:flex;gap:14px;align-items:flex-start;padding:18px;height:100%;box-sizing:border-box}
.pl-ccard__badge{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;width:48px;height:48px;border-radius:13px;
  background:var(--c);color:#fff;font:800 14px/1 var(--pl-font);letter-spacing:-.02em;box-shadow:inset 0 -3px 0 rgba(0,0,0,.15)}
.pl-ccard__body{display:flex;flex-direction:column;gap:6px;min-width:0;flex:1}
.pl-ccard__title{font-size:16.5px;font-weight:800;color:var(--pl-ink);line-height:1.3}
.pl-ccard__desc{font-size:13.5px;line-height:1.55;color:var(--pl-muted)}
.pl-ccard__meta{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--pl-muted);margin-top:auto;padding-top:4px}
.pl-ccard__progress{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:700;color:var(--pl-accent)}
.pl-ccard__progress .pl-bar{flex:1;height:5px}
.pl-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}

.screen-reader-text{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

@media (max-width:991px){
  :root{--pl-header-h:60px}
  .pl-container{padding:0 18px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}
body.pl-ui [hidden]{display:none!important}
body.pl-ui .main-menu > li.pl-menu-cta{display:inline-flex;align-items:center;height:var(--pl-header-h);vertical-align:top}
/* Off-canvas (mobile) menu: light panel */
body.pl-ui #off-canvas-section .off-canvas-holder,body.pl-ui #off-canvas-section .off-canvas-inner{background:#fff!important;color:var(--pl-ink)!important}
body.pl-ui #off-canvas-section .off-canvas-header{background:var(--pl-bg)!important;color:var(--pl-ink)!important;border-bottom:1px solid var(--pl-line)}
body.pl-ui #off-canvas-section .off-canvas-header a,body.pl-ui #off-canvas-section .off-canvas-header i{color:var(--pl-ink)!important}
body.pl-ui #off-canvas-nav a{color:var(--pl-ink)!important;font-size:16px;font-weight:700;padding-top:12px;padding-bottom:12px}
body.pl-ui #off-canvas-nav .sub-menu a{color:var(--pl-text)!important;font-weight:500;font-size:15px;padding-top:9px;padding-bottom:9px}
body.pl-ui #off-canvas-nav li{border-color:var(--pl-line)!important}
body.pl-ui #off-canvas-nav .pl-menu-cta > a{display:inline-flex;margin-top:12px;padding:12px 20px;background:var(--pl-primary);color:#fff!important;border-radius:12px}
body.pl-ui #off-canvas-nav .explain-menu,body.pl-ui #off-canvas-nav .sub-menu-toggle,body.pl-ui #off-canvas-nav i{color:var(--pl-ink)!important}
body.pl-ui #off-canvas-section .off-canvas-header{background-image:none!important}
body.pl-ui #off-canvas-section .off-canvas-header:before,body.pl-ui #off-canvas-section .off-canvas-header .header-overlay{display:none!important}
body.pl-ui #off-canvas-nav .pl-menu-cta > a{padding:10px 18px;line-height:1.3}