/* ============================================================
   KRĘGOSŁUP.INFO - design system
   Paleta "Sylwetka": teal-zdrowie + krem + atrament + bursztyn
   Typografia: Lora (display serif) + Manrope (body)
   ============================================================ */

:root{
  --bg:#f7f5ef;
  --bg-soft:#eef2ec;
  --surface:#ffffff;
  --ink:#1c2b24;
  --muted:#57685f;
  --faint:#5f7066;
  --accent:#0c7a5f;
  --accent-strong:#0a5c47;
  --accent-soft:rgba(12,122,95,.09);
  --accent-subtle:rgba(12,122,95,.16);
  --amber:#b97f24;
  --amber-ink:#8a5a12;
  --amber-soft:rgba(185,127,36,.13);
  --line:#e5e0d3;
  --line-soft:rgba(28,43,36,.07);
  --danger:#b3402f;
  --danger-soft:#f7e9e5;
  --btn-text:#ffffff;
  --shadow:0 1px 2px rgba(28,43,36,.05),0 10px 28px -14px rgba(28,43,36,.25);
  --shadow-hover:0 2px 4px rgba(28,43,36,.06),0 18px 40px -16px rgba(12,122,95,.28);
  --radius:14px;
  --radius-sm:9px;
  --header-h:60px;
  --sidebar-w:268px;
  --font-display:'Lora',Georgia,serif;
  --font-body:'Manrope',system-ui,sans-serif;
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0e1411;
    --bg-soft:#131b16;
    --surface:#161f1a;
    --ink:#e7eee9;
    --muted:#a2b3a9;
    --faint:#8fa096;
    --accent:#2fbf8e;
    --accent-strong:#4fd3a4;
    --accent-soft:rgba(47,191,142,.12);
    --accent-subtle:rgba(47,191,142,.2);
    --amber:#e0a94f;
    --amber-ink:#e0a94f;
    --amber-soft:rgba(224,169,79,.14);
    --line:#24312a;
    --line-soft:rgba(231,238,233,.08);
    --danger:#e07a66;
    --danger-soft:rgba(224,122,102,.12);
    --btn-text:#0e1411;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -12px rgba(0,0,0,.55);
    --shadow-hover:0 2px 4px rgba(0,0,0,.45),0 18px 44px -16px rgba(47,191,142,.25);
  }
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 14px)}
body{
  font-family:var(--font-body);
  font-size:17px;line-height:1.7;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  min-height:100vh;
  background-image:
    radial-gradient(ellipse 700px 500px at -8% -6%, var(--accent-soft) 0%, transparent 55%),
    radial-gradient(ellipse 640px 460px at 108% 104%, var(--amber-soft) 0%, transparent 55%);
  background-attachment:fixed;
}
::selection{background:var(--accent);color:#fff}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.skip-link{
  position:fixed;left:-9999px;top:0;z-index:300;background:var(--accent);color:#fff;
  padding:10px 18px;border-radius:0 0 10px 0;font-weight:600;font-size:.85rem;
}
.skip-link:focus{left:0}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3{font-family:var(--font-display);line-height:1.22;text-wrap:balance;color:var(--ink)}
h1{font-size:clamp(1.85rem,4.4vw,2.9rem);font-weight:700;letter-spacing:-.015em}
h2{font-size:clamp(1.25rem,2.6vw,1.65rem);font-weight:600;letter-spacing:-.01em}
h3{font-size:1.08rem;font-weight:600}
p{line-height:1.72}
strong{font-weight:700;color:var(--ink)}
.label{
  font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.14em;
  color:var(--accent);margin-bottom:.6em;display:flex;align-items:center;gap:.5em;
}
.label::before{content:'';width:18px;height:2px;background:var(--accent);border-radius:2px;display:inline-block}

/* ===== HEADER ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:120;height:var(--header-h);
  background:color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.header::after{
  content:'';position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--accent-subtle),transparent);
  opacity:.55;pointer-events:none;
}
.header-inner{
  max-width:1280px;margin:0 auto;height:100%;padding:0 22px;
  display:flex;align-items:center;gap:22px;
}
.mark{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.02rem;color:var(--ink);flex-shrink:0}
.mark-glyph{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent),#0a5c47);color:#fff;flex-shrink:0;
}
.mark-text em{font-style:normal;color:var(--accent)}

/* ===== SEARCH ===== */
.search-wrap{position:relative;margin-left:auto;width:min(320px,42vw)}
.search-ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);color:var(--faint);pointer-events:none}
#search-input{
  width:100%;height:38px;border-radius:20px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);padding:0 14px 0 36px;
  font-family:var(--font-body);font-size:.88rem;transition:border-color .2s,box-shadow .2s;
}
#search-input::placeholder{color:var(--faint)}
#search-input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.search-results{
  position:absolute;top:44px;left:0;right:0;z-index:200;background:var(--surface);
  border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);overflow:hidden;
  max-height:340px;overflow-y:auto;
}
.search-results a{
  display:block;padding:10px 14px;border-bottom:1px solid var(--line-soft);
  font-size:.85rem;color:var(--ink);
}
.search-results a:hover{background:var(--accent-soft)}
.search-results a small{display:block;color:var(--faint);font-size:.72rem;margin-top:2px}
.search-results .sr-empty{padding:12px 14px;font-size:.85rem;color:var(--faint)}

/* ===== BURGER ===== */
.burger{
  display:none;flex-direction:column;gap:4.5px;background:none;border:none;cursor:pointer;
  padding:8px;margin-left:4px;border-radius:8px;
}
.burger span{display:block;width:21px;height:2px;background:var(--ink);border-radius:2px;transition:transform .25s ease,opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ===== LAYOUT ===== */
.page-wrap{display:flex;min-height:100vh;padding-top:var(--header-h)}
.sidebar{
  width:var(--sidebar-w);position:fixed;top:var(--header-h);left:0;bottom:0;z-index:90;
  border-right:1px solid var(--line);background:color-mix(in srgb, var(--bg) 92%, transparent);
  overflow-y:auto;padding:14px 0 30px;
}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-thumb{background:var(--accent-subtle);border-radius:4px}
.sidebar-home{
  display:flex;align-items:center;gap:8px;padding:9px 18px;margin:0 10px 6px;
  font-size:.9rem;font-weight:700;color:var(--ink);border-radius:10px;
}
.sidebar-home:hover{background:var(--accent-soft)}
.sidebar-sec{padding:16px 18px 5px;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.13em;color:var(--faint)}
.sidebar-link{
  display:flex;align-items:center;gap:8px;padding:7px 18px;font-size:.9rem;font-weight:500;
  color:var(--muted);border-left:3px solid transparent;transition:all .16s ease;
}
.sidebar-link .sico{font-size:.82rem;opacity:.85;width:18px;text-align:center;flex-shrink:0}
.sidebar-link:hover{color:var(--ink);background:var(--accent-soft)}
.sidebar-link.active{color:var(--accent);border-left-color:var(--accent);background:var(--accent-soft);font-weight:700}

.main{margin-left:var(--sidebar-w);flex:1;min-width:0;padding:34px 44px 40px;max-width:980px}
.main-inner{animation:fadeUp .28s ease-out}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ===== HOME HERO ===== */
.home-hero{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--accent-soft) 60%, var(--surface)) 0%, var(--surface) 55%),
    var(--surface);
  border:1px solid var(--line);
  padding:38px 40px 34px;display:flex;gap:26px;align-items:center;
}
.hero-copy{flex:1;min-width:0}
.hero-copy .badge{
  display:inline-flex;align-items:center;gap:6px;font-size:.72rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.1em;color:var(--amber);
  background:var(--amber-soft);padding:4px 11px;border-radius:20px;margin-bottom:14px;
}
.hero-copy h1{font-size:clamp(1.7rem,3.6vw,2.5rem);line-height:1.18}
.hero-copy h1 em{font-style:italic;color:var(--accent)}
.hero-copy .lead{color:var(--muted);margin-top:.65em;max-width:52ch;font-size:1rem}
.hero-cta{display:flex;gap:12px;margin-top:1.4em;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:12px;
  font-weight:700;font-size:.9rem;border:none;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease;
}
.btn-primary{background:var(--accent);color:var(--btn-text);box-shadow:0 6px 18px -8px var(--accent)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px -8px var(--accent)}
.btn-ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.hero-visual{flex-shrink:0;width:200px;display:flex;justify-content:center}

/* ===== SPINE SIGNATURE ===== */
.spine-wrap{position:relative;width:200px;height:290px}
.spine-wrap svg{width:100%;height:100%;overflow:visible}
.spine-zone{cursor:pointer}
.spine-zone .z-dot{transition:r .2s ease,fill .2s ease}
.spine-zone:hover .z-dot{r:9}
.spine-zone .z-pulse{animation:zPulse 2.6s ease-in-out infinite;transform-origin:center;transform-box:fill-box}
@keyframes zPulse{0%,100%{opacity:.85;r:7}50%{opacity:.35;r:11}}
.spine-zone .z-label{font-size:10.5px;font-weight:700;font-family:var(--font-body);fill:var(--ink);pointer-events:none}
.spine-zone .z-sub{font-size:8.5px;font-family:var(--font-body);fill:var(--faint);pointer-events:none}

/* ===== SPINE SVG COLORS ===== */
.spine-wrap .silhouette{fill:var(--accent-soft);stroke:none}
.spine-wrap .vert{fill:var(--accent);opacity:.9}
.spine-wrap .vert.v-cerv{fill:#3aa88f}
.spine-wrap .vert.v-lumb{fill:var(--amber)}
.spine-wrap .vert.v-sac{fill:var(--accent-strong)}
.spine-wrap .z-dot.zcerv{fill:#3aa88f}
.spine-wrap .z-dot.zthor{fill:var(--accent)}
.spine-wrap .z-dot.zlumb{fill:var(--amber)}
.spine-wrap .z-dot.zsac{fill:var(--accent-strong)}
.spine-wrap .z-pulse.zcerv{fill:#3aa88f}
.spine-wrap .z-pulse.zthor{fill:var(--accent)}
.spine-wrap .z-pulse.zlumb{fill:var(--amber)}
.spine-wrap .z-pulse.zsac{fill:var(--accent-strong)}
.spine-wrap a{outline:none}
.spine-zone:focus-visible .z-dot{stroke:var(--ink);stroke-width:2}

/* ===== STATS STRIP ===== */
.stats-strip{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:16px;
}
.stat{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:14px 18px;
}
.stat b{display:block;font-family:var(--font-display);font-size:1.5rem;color:var(--accent);line-height:1.1}
.stat span{font-size:.8rem;color:var(--muted);line-height:1.45;display:block;margin-top:3px}

/* ===== SECTION HEADERS + CARDS ===== */
.home-section{margin-top:2.2em}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:.55em}
.section-head h2{font-size:1.3rem}
.section-head .sec-count{font-size:.75rem;color:var(--faint);font-weight:600;white-space:nowrap}
.home-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(255px,1fr));gap:12px}
.home-card{
  position:relative;display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:16px 18px 15px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.home-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--accent-subtle)}
.home-card .ico{font-size:1.25rem;display:block;margin-bottom:.35em}
.home-card h3{font-size:.92rem;font-weight:700;line-height:1.35;margin-bottom:.2em}
.home-card p{font-size:.85rem;color:var(--muted);line-height:1.55;margin:0}
.home-card .card-arrow{
  position:absolute;right:14px;top:16px;opacity:0;transform:translateX(-6px);
  transition:all .2s ease;color:var(--accent);font-size:.9rem;
}
.home-card:hover .card-arrow{opacity:1;transform:translateX(0)}

/* ===== ARTICLE ===== */
.breadcrumbs{font-size:.8rem;color:var(--faint);margin-bottom:1em;display:flex;gap:7px;flex-wrap:wrap;letter-spacing:.01em}
.breadcrumbs a:hover{color:var(--accent)}
.article h1{font-size:clamp(1.65rem,3.6vw,2.4rem);margin-bottom:.25em}
.article .meta{
  display:flex;gap:14px;flex-wrap:wrap;align-items:center;color:var(--faint);
  font-size:.8rem;margin-bottom:1.6em;padding-bottom:1.1em;border-bottom:1px solid var(--line);
}
.article .meta .meta-sec{color:var(--accent);font-weight:700;text-transform:uppercase;font-size:.72rem;letter-spacing:.1em}
.article .meta .trust-badge{
  display:inline-flex;align-items:center;gap:5px;background:var(--amber-soft);color:var(--amber-ink);
  padding:3px 10px;border-radius:16px;font-weight:800;font-size:.68rem;letter-spacing:.06em;
}
.article h2{margin-top:2em;margin-bottom:.55em;padding-bottom:.35em;border-bottom:1px solid var(--line-soft)}
.article h3{margin-top:1.5em;margin-bottom:.4em}
.article p{margin-bottom:.85em;color:var(--muted)}
.article ul,.article ol{margin-bottom:.9em;padding-left:1.35em;color:var(--muted)}
.article li{margin-bottom:.35em}
.article li::marker{color:var(--accent)}
.article a:not(.btn){color:var(--accent-strong);text-decoration:underline;text-decoration-color:var(--accent-subtle);text-underline-offset:3px;transition:text-decoration-color .2s}
.article a:not(.btn):hover{text-decoration-color:var(--accent)}

/* TOC */
.toc{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:16px 20px;margin:0 0 1.6em;
}
.toc b{font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;color:var(--faint);display:block;margin-bottom:8px}
.toc a{display:inline-block;font-size:.85rem;color:var(--muted);padding:3px 0;margin-right:14px}
.toc a:hover{color:var(--accent)}

/* Boxes */
.info-box,.warn-box{
  border-radius:var(--radius-sm);padding:15px 18px 15px 46px;margin:1.1em 0;
  position:relative;font-size:.92rem;line-height:1.65;
}
.info-box::before,.warn-box::before{
  position:absolute;left:16px;top:14px;font-size:1.15rem;
}
.info-box{background:var(--accent-soft);border:1px solid var(--accent-subtle);color:var(--muted)}
.info-box::before{content:'ℹ️'}
.warn-box{background:var(--danger-soft);border:1px solid color-mix(in srgb, var(--danger) 35%, transparent);color:var(--muted)}
.warn-box::before{content:'⚠️'}
.info-box b,.warn-box b{color:var(--ink)}

/* Tables */
.table-responsive{overflow-x:auto;margin:1.1em 0;border-radius:var(--radius-sm);border:1px solid var(--line)}
.cmp-table{width:100%;border-collapse:collapse;font-size:.88rem;min-width:480px}
.cmp-table th,.cmp-table td{padding:11px 14px;text-align:left;border-bottom:1px solid var(--line-soft);vertical-align:top}
.cmp-table th{background:var(--bg-soft);font-weight:800;font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}
.cmp-table tr:last-child td{border-bottom:none}
.cmp-table tbody tr:hover{background:var(--accent-soft)}
.cmp-table td:first-child{font-weight:700;color:var(--ink)}

/* FAQ */
.faq-item{border-bottom:1px solid var(--line-soft);padding:2px 0}
.faq-item:last-child{border-bottom:none}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;
  background:none;border:none;cursor:pointer;text-align:left;padding:15px 2px;
  font-family:var(--font-display);font-weight:600;font-size:1.02rem;color:var(--ink);
}
.faq-q .fq-ico{flex-shrink:0;width:24px;height:24px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-size:.8rem;transition:transform .25s ease}
.faq-item.open .fq-ico{transform:rotate(45deg)}
.faq-a{display:none;padding:0 2px 16px;color:var(--muted);font-size:.93rem}
.faq-item.open .faq-a{display:block;animation:fadeUp .25s ease-out}

/* Glossary */
.glossary{margin:1em 0}
.glossary dt{font-weight:700;color:var(--ink);margin-top:1.05em;font-size:.95rem;display:flex;gap:8px;align-items:baseline}
.glossary dt::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--accent);flex-shrink:0;position:relative;top:-1px}
.glossary dd{color:var(--muted);font-size:.88rem;margin-left:15px;line-height:1.6}

/* ===== ERROR ===== */
.error-page{text-align:center;padding:4.5em 1em}
.error-page h1{font-size:clamp(3rem,8vw,5rem);color:var(--accent);font-family:var(--font-body);font-weight:800}
.error-page p{color:var(--muted);margin-top:.4em}

/* ===== FOOTER ===== */
.footer{
  margin-top:3em;padding-top:1.6em;border-top:1px solid var(--line);
  font-size:.8rem;color:var(--faint);line-height:1.6;
}
.footer-links{display:flex;gap:10px;margin-top:8px;flex-wrap:wrap}
.footer-links a{color:var(--muted);font-weight:600}
.footer-links a:hover{color:var(--accent)}

/* ===== RESPONSIVE ===== */
@media (max-width:900px){
  .sidebar{width:240px}
  .main{margin-left:240px;padding:26px 26px 36px}
  .home-hero{padding:30px 28px}
  .hero-visual{width:150px}
  .spine-wrap{width:150px;height:230px}
}
@media (max-width:700px){
  .header-inner{padding:0 14px;gap:12px}
  .search-wrap{display:none}
  .burger{display:flex}
  .sidebar{
    left:-280px;width:280px;transition:left .3s ease;
    background:var(--bg);box-shadow:var(--shadow);
  }
  .sidebar.open{left:0}
  .main{margin-left:0;padding:20px 16px 34px}
  .home-hero{flex-direction:column;align-items:flex-start;padding:26px 22px}
  .hero-visual{width:100%;display:flex;justify-content:center;order:-1}
  .spine-wrap{width:170px;height:220px}
  .stats-strip{grid-template-columns:1fr;gap:10px}
  .home-grid{grid-template-columns:1fr}
  .hero-copy h1{font-size:1.6rem}
}
@media (max-width:420px){
  .mark-text{font-size:.92rem}
  .mark-glyph{width:30px;height:30px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .spine-zone .z-pulse{animation:none}
}