/* ==========================================================================
Studio VSS.net — artykuł / baza wiedzy (redesign 2026)
Układ 2-kolumnowy: lewa = sticky spis treści po H2, prawa = treść.
========================================================================== */

/* HERO artykułu */
.art-hero { position: relative; overflow: hidden; background: radial-gradient(110% 130% at 88% -20%, rgba(255,106,19,.22), transparent 46%), linear-gradient(160deg, var(--ss-ink) 0%, var(--ss-ink-700) 60%, var(--ss-navy) 100%); color: #fff; padding: clamp(40px, 5vw, 64px) 0 clamp(48px, 6vw, 72px); }
.art-hero .hero-grid-bg { background-size: 46px 46px; }
.art-hero-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(32px,4vw,56px); align-items: center; }
.art-crumbs { font-family: var(--f-mono); font-size: .74rem; color: rgba(255,255,255,.5); margin-bottom: 18px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.art-crumbs a { color: rgba(255,255,255,.7); }
.art-crumbs a:hover { color: var(--ss-orange); }
.art-crumbs .sep { opacity: .4; }
.art-label { display: inline-flex; align-items: center; gap: 8px; font-family: var(--f-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; color: #ffd9bd; background: rgba(255,106,19,.14); border: 1px solid rgba(255,106,19,.32); padding: 6px 13px; border-radius: 999px; }
.art-hero h1 { color: #fff; font-size: clamp(1.9rem, 1.3rem + 2.6vw, 3rem); font-weight: 600; line-height: 1.07; letter-spacing: -.025em; margin: 18px 0 0; }
.art-hero .lead { color: rgba(255,255,255,.74); font-size: clamp(1rem,.96rem + .35vw,1.16rem); line-height: 1.65; margin: 18px 0 0; max-width: 560px; }
.art-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 24px; align-items: center; font-size: .8rem; color: rgba(255,255,255,.55); }
.art-meta time { font-family: var(--f-mono); }
.art-meta .chip { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14); border-radius: 999px; padding: 4px 12px; color: rgba(255,255,255,.8); }
.art-hero-figure { position: relative; }
.art-hero-figure img { display:block; width:100%; height:auto; border-radius:var(--r-lg); box-shadow:var(--sh-lg); }

/* UKŁAD 2-kolumnowy */
.art-shell { padding: clamp(40px, 5vw, 72px) 0; }
.art-layout { display: grid; grid-template-columns: 248px minmax(0, 1fr); gap: clamp(36px, 4vw, 64px); align-items: start; max-width: 1120px; margin: 0 auto; }

/* Sticky TOC */
.art-toc { position: sticky; top: 96px; align-self: start; }
.art-toc .toc-title { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ss-faint); margin-bottom: 16px; padding-left: 14px; }
.art-toc ol { list-style: none; counter-reset: toc; display: flex; flex-direction: column; }
.art-toc li { counter-increment: toc; }
.art-toc a { display: block; padding: 8px 12px 8px 14px; font-size: .86rem; line-height: 1.4; color: var(--ss-muted); border-left: 2px solid var(--ss-border); transition: color var(--t), border-color var(--t), background var(--t); }
.art-toc a::before { content: counter(toc, decimal-leading-zero); font-family: var(--f-mono); font-size: .68rem; color: var(--ss-faint); margin-right: 9px; }
.art-toc a:hover { color: var(--ss-navy-600); background: var(--ss-bg-alt); }
.art-toc a.active { color: var(--ss-orange); border-left-color: var(--ss-orange); font-weight: 500; }
.art-toc a.active::before { color: var(--ss-orange); }
.art-toc .toc-cta { margin-top: 22px; padding: 18px; background: var(--ss-ink); border-radius: var(--r); color: #fff; }
.art-toc .toc-cta b { font-family: var(--f-head); font-size: .95rem; display: block; }
.art-toc .toc-cta p { font-size: .78rem; color: rgba(255,255,255,.6); margin: 6px 0 13px; }
.art-toc .toc-cta a.btn { width: 100%; justify-content: center; padding: 10px 10px; font-size: .78rem; white-space: normal; text-align: center; line-height: 1.3; box-sizing: border-box; color: #fff; }
.art-toc .toc-cta a::before { content: none; }

/* TREŚĆ artykułu */
.art-content { min-width: 0; font-size: 1.07rem; }
.art-byline { font-size: .85rem; color: var(--ss-muted); margin: 0 0 26px; padding-bottom: 20px; border-bottom: 1px solid var(--ss-border); }
.art-byline strong { color: var(--ss-navy-600); }
.art-content h2 { scroll-margin-top: 96px; font-size: clamp(1.45rem, 1.2rem + 1vw, 1.95rem); font-weight: 600; color: var(--ss-navy-600); margin: 1.9em 0 .7em; line-height: 1.18; }
.art-content h2:first-child { margin-top: 0; }
.art-content h3 { font-size: clamp(1.15rem,1rem + .6vw,1.4rem); color: var(--ss-navy); margin: 1.7em 0 .5em; border-left: 3px solid var(--ss-orange); padding-left: 14px; }
.art-content p { margin: 0 0 1.2em; line-height: 1.8; color: var(--ss-text); }
.art-content a { color: var(--ss-blue); text-decoration: underline; text-underline-offset: 2px; }
.art-content a:hover { color: var(--ss-orange); }
.art-content ul { list-style: none; padding: 0; margin: 0 0 1.3em; display: flex; flex-direction: column; gap: 11px; }
.art-content ul li { position: relative; padding-left: 28px; line-height: 1.65; }
.art-content ul li::before { content: ""; position: absolute; left: 4px; top: .6em; width: 9px; height: 9px; background: var(--ss-orange); border-radius: 2px; transform: rotate(45deg); }
.art-content ol { padding-left: 1.3em; margin: 0 0 1.3em; }
.art-content ol li { margin-bottom: 9px; padding-left: 6px; }
.art-content blockquote { position: relative; margin: 1.6em 0; padding: 22px 26px 22px 60px; background: linear-gradient(135deg, rgba(255,106,19,.06), rgba(245,158,27,.03)); border: 1px solid rgba(255,106,19,.18); border-radius: var(--r); color: var(--ss-navy-600); font-size: 1.08rem; line-height: 1.55; font-weight: 500; }
.art-content blockquote::before { content: "\201C"; position: absolute; left: 18px; top: 6px; font-family: var(--f-head); font-size: 3rem; color: var(--ss-orange); line-height: 1; }
.art-content .table-wrap { margin: 1.6em 0; border: 1px solid var(--ss-border); border-radius: var(--r); overflow: auto; box-shadow: var(--sh-sm); }
.art-content table { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 560px; }
.art-content thead th { background: var(--ss-ink); color: #fff; font-family: var(--f-head); font-weight: 600; text-align: left; padding: 13px 15px; }
.art-content tbody td { padding: 12px 15px; border-top: 1px solid var(--ss-border); vertical-align: top; line-height: 1.5; }
.art-content tbody tr:nth-child(even) { background: var(--ss-bg-alt); }
.art-content tbody td:first-child { font-weight: 600; color: var(--ss-navy-600); }

/* def-box */
.art-content .def-box { position:relative; border:1px solid rgba(255,106,19,.28); border-radius:16px; background:linear-gradient(180deg,rgba(255,106,19,.07),rgba(255,106,19,0) 60%),var(--ss-bg-alt); padding:1.35rem 1.5rem; margin:0 0 1.8rem; overflow:hidden; }
.art-content .def-box::before { content:""; position:absolute; left:0; top:0; bottom:0; width:5px; background:linear-gradient(180deg,#ff8a3d,#ff6a13); }
.art-content .def-box .def-label { display:inline-flex; align-items:center; gap:.5rem; font:700 .72rem/1 var(--f-head); letter-spacing:.1em; text-transform:uppercase; color:#c64b00; background:rgba(255,106,19,.13); border-radius:999px; padding:.42rem .85rem; margin-bottom:.7rem; }
.art-content .def-box p { margin:0; font-size:1.04rem; line-height:1.62; color:var(--ss-text); }

/* feature-row */
.feature-row { display:grid; grid-template-columns:minmax(0,420px) 1fr; gap:24px; align-items:center; margin:1.8rem 0; }
.feature-media { margin:0; border-radius:var(--r-lg); overflow:hidden; border:1px solid var(--ss-border); background:var(--ss-white); cursor:pointer; }
.feature-media .shot-frame img, .feature-media img { display:block; width:100%; height:auto; }
.feature-media figcaption { font-size:.82rem; color:var(--ss-muted); padding:.6rem .9rem; border-top:1px solid var(--ss-border-soft); }
.feature-body .feature-label { display:inline-block; font:700 .72rem/1 var(--f-mono); letter-spacing:.08em; text-transform:uppercase; color:var(--ss-orange); margin-bottom:.5rem; }
.feature-body .feature-title { font-family:var(--f-head); font-weight:700; font-size:1.15rem; color:var(--ss-ink); margin:0 0 .5rem; }
.feature-body p { color:var(--ss-text); line-height:1.7; margin:0; }

/* cmp-table */
.cmp-table { width:100%; border-collapse:collapse; margin:1.4rem 0; font-size:.92rem; border:1px solid var(--ss-border); overflow:hidden; }
.cmp-table th { background:var(--ss-ink); color:#fff; font-family:var(--f-head); text-align:left; padding:.8rem .9rem; font-weight:600; }
.cmp-table td { padding:.75rem .9rem; border-top:1px solid var(--ss-border); vertical-align:top; color:var(--ss-text); }
.cmp-table tr:nth-child(even) td { background:var(--ss-bg-alt); }

/* SEKCJE DOLNE */
.wide-section { padding: clamp(56px, 7vw, 90px) 0; }
.wide-section.section--alt { background: var(--ss-bg-alt); }

/* FAQ master-detail */
.fa{ display:grid; grid-template-columns:.9fr 1.1fr; gap:34px; align-items:start; max-width:1000px; margin:0 auto; }
.fa-list{ display:flex; flex-direction:column; gap:4px; }
.fa-q{ text-align:left; background:none; border:none; cursor:pointer; font-family:var(--f-body); font-size:.98rem; font-weight:500; color:var(--ss-muted); padding:15px 18px; border-radius:var(--r-sm); display:flex; gap:13px; align-items:flex-start; line-height:1.4; transition:background var(--t), color var(--t); }
.fa-q .qn{ font-family:var(--f-mono); font-size:.72rem; color:var(--ss-faint); padding-top:2px; }
.fa-q:hover{ background:var(--ss-bg-alt); color:var(--ss-navy-600); }
.fa-q.on{ background:var(--ss-ink); color:#fff; }
.fa-q.on .qn{ color:var(--ss-orange-300); }
.fa-panel{ background:linear-gradient(160deg,var(--ss-bg-alt),#fff); border:1px solid var(--ss-border); border-radius:var(--r-lg); padding:34px 34px 36px; min-height:248px; position:relative; overflow:hidden; }
.fa-panel::before{ content:""; position:absolute; top:0; left:0; width:4px; height:100%; background:linear-gradient(var(--ss-orange),var(--ss-amber)); }
.fa-panel .big{ font-family:var(--f-head); font-size:3rem; font-weight:700; color:rgba(255,106,19,.16); line-height:1; }
.fa-panel h3{ font-size:1.3rem; color:var(--ss-navy-600); margin:8px 0 14px; }
.fa-panel p{ color:var(--ss-muted); font-size:1rem; line-height:1.75; margin:0; }
.fa-ans{ display:none; }
.fa-ans.on{ display:block; animation:faIn .35s var(--ease); }
@keyframes faIn{ from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:none;} }

/* Glosariusz */
.glossary-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 18px; max-width: 1080px; margin: 0 auto; }
.gloss-card { background: var(--ss-white); border: 1px solid var(--ss-border); border-top: 3px solid var(--ss-border); border-radius: var(--r); padding: 22px 24px; transition: transform var(--t), box-shadow var(--t); }
.gloss-card:hover { transform: translateY(-3px); box-shadow: var(--sh); border-top-color: var(--ss-orange); }
.gloss-card dt { font-family: var(--f-head); font-weight: 600; color: var(--ss-navy-600); font-size: 1.02rem; margin-bottom: 8px; display: flex; align-items: center; gap: 9px; }
.gloss-card dt .gi { font-family: var(--f-mono); font-size: .7rem; color: var(--ss-orange); background: rgba(255,106,19,.1); border-radius: 5px; padding: 2px 7px; }
.gloss-card dd { margin: 0; font-size: .9rem; color: var(--ss-muted); line-height: 1.6; }

/* How-to */
.howto-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step-card { background: var(--ss-white); border: 1px solid var(--ss-border); border-radius: var(--r-lg); padding: 28px 24px; transition: transform var(--t), box-shadow var(--t); }
.step-card:hover { transform: translateY(-4px); box-shadow: var(--sh-md); }
.step-card .num { font-family: var(--f-head); font-size: 2.6rem; font-weight: 700; color: rgba(255,106,19,.18); line-height: 1; margin-bottom: 12px; }
.step-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.step-card p { font-size: .88rem; color: var(--ss-muted); margin: 0; line-height: 1.6; }

/* CTA artykułu */
.art-cta { position: relative; overflow: hidden; background: radial-gradient(100% 140% at 85% 0%, rgba(255,106,19,.28), transparent 50%), linear-gradient(150deg, var(--ss-ink), var(--ss-navy)); color: #fff; border-radius: var(--r-xl); padding: clamp(40px,5vw,64px); text-align: center; max-width: 1080px; margin: 0 auto; }
.art-cta h2 { color: #fff; display: block; font-size: clamp(1.6rem,1.3rem + 1.6vw,2.4rem); margin: 0; }
.art-cta p { color: rgba(255,255,255,.78); max-width: 540px; margin: 16px auto 0; }
.art-cta .cta-actions { margin-top: 32px; }

/* Lightbox */
#lb{ display:none; position:fixed; inset:0; z-index:9999; background:rgba(8,13,22,.94); align-items:center; justify-content:center; flex-direction:column; padding:24px; }
#lb.open{ display:flex; }
#lbInner{ max-width:960px; width:100%; }
#lbImgWrap{ background:#0e1726; border:1px solid rgba(255,255,255,.12); border-radius:14px; overflow:hidden; aspect-ratio:16/10; display:flex; align-items:center; justify-content:center; }
#lbImgWrap img{ width:100%; height:100%; object-fit:contain; }
#lbMeta{ color:#fff; text-align:center; margin-top:16px; }
#lbTitle{ font-family:var(--f-head); font-weight:600; font-size:1.05rem; }
#lbDesc{ font-size:.86rem; color:rgba(255,255,255,.6); margin-top:6px; max-width:720px; margin-left:auto; margin-right:auto; }
#lbClose{ position:fixed; top:16px; right:20px; background:rgba(255,255,255,.12); border:none; color:#fff; font-size:1.8rem; line-height:1; width:42px; height:42px; border-radius:10px; cursor:pointer; }
#lbClose:hover{ background:rgba(255,255,255,.25); }

@media (max-width: 920px) {
  .art-hero-inner { grid-template-columns: 1fr; }
  .art-hero-figure { order: -1; }
  .art-layout { grid-template-columns: 1fr; }
  .art-toc { position: relative; top: 0; border: 1px solid var(--ss-border); border-radius: var(--r); padding: 18px; background: var(--ss-bg-alt); }
  .art-toc ol { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 14px; }
  .art-toc .toc-cta { display: none; }
  .howto-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .fa { grid-template-columns: 1fr; gap: 20px; }
  .fa-panel { min-height: 0; }
  .feature-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .howto-grid { grid-template-columns: 1fr; }
  .art-toc ol { grid-template-columns: 1fr; }
}