/* ==========================================================================
   CleverRetail — arkusz stylów
   Kolory marki, typografia, layout responsywny, dostępność (WCAG 2.1 AA).
   Edytujesz wygląd tutaj. Treści tekstowe zmieniasz w pliku index.php (tablica $T).
   ========================================================================== */

/* --- Tokeny marki ------------------------------------------------------- */
:root{
  --blue:        #1B87C9;   /* niebieski marki (akcenty, duże elementy) */
  --blue-600:    #1273B0;
  --blue-700:    #0E5A8A;   /* ciemniejszy — tła przycisków z białym tekstem (kontrast AA) */
  --blue-900:    #093F63;   /* granat — nagłówki na ciemnym */
  --yellow:      #FCBA00;   /* żółty marki (akcent, punkt "apertury") */
  --yellow-soft: #FFD45E;
  --ink:         #2A2724;   /* nagłówki */
  --graphite:    #4F4A47;   /* tekst podstawowy (kontrast ~8:1 na bieli) */
  --muted:       #6B6661;   /* tekst drugorzędny */
  --bg:          #FFFFFF;
  --surface:     #F5F8FB;   /* jasne tło sekcji */
  --surface-2:   #EAF3FA;   /* delikatny błękit */
  --line:        #E2E8EF;   /* linie / obramowania */
  --card:        #FFFFFF;   /* tło kart, formularzy, paneli, belki menu */
  --header-bg:   rgba(255,255,255,.9); /* tło przyklejonej belki */
  --ok:          #1E8E5A;
  --err:         #C02626;

  --radius:      16px;
  --radius-sm:   10px;
  --shadow:      0 18px 48px -24px rgba(14,90,138,.45);
  --shadow-sm:   0 6px 20px -12px rgba(14,90,138,.4);
  --maxw:        1140px;
  --ff-display:  "Montserrat", Arial, sans-serif;
  --ff-body:     "Inter", Arial, sans-serif;
}

/* --- Reset / podstawy --------------------------------------------------- */
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  margin:0; background:var(--bg); color:var(--graphite);
  font-family:var(--ff-body); font-size:18px; line-height:1.65;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img,svg{ max-width:100%; height:auto; display:block; }
a{ color:var(--blue-700); text-underline-offset:3px; }
h1,h2,h3,h4{ font-family:var(--ff-display); color:var(--ink); line-height:1.12; margin:0 0 .4em; font-weight:800; letter-spacing:-.02em; }
h1{ font-size:clamp(2.2rem,5vw,3.6rem); }
h2{ font-size:clamp(1.7rem,3.4vw,2.6rem); }
h3{ font-size:1.25rem; }
p{ margin:0 0 1rem; }

/* Dostępność: widoczny focus + pominięcie ruchu */
:focus-visible{ outline:3px solid var(--blue-700); outline-offset:3px; border-radius:6px; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
  .cr-scan{ animation:none !important; }
}
.skip-link{
  position:absolute; left:-9999px; top:0; z-index:200;
  background:var(--blue-700); color:#fff; padding:12px 18px; border-radius:0 0 10px 0; font-weight:700;
}
.skip-link:focus{ left:0; }
.visually-hidden{
  position:absolute!important; width:1px;height:1px; padding:0;margin:-1px; overflow:hidden;
  clip:rect(0 0 0 0); white-space:nowrap; border:0;
}

/* --- Layout pomocniczy -------------------------------------------------- */
.container{ width:100%; max-width:var(--maxw); margin-inline:auto; padding-inline:24px; }
.section{ padding:88px 0; }
section[id], main[id]{ scroll-margin-top:84px; }
.section--tint{ background:var(--surface); }
.section--blue{ background:linear-gradient(160deg,var(--blue-700),var(--blue-900)); color:#EAF3FA; }
.section--blue h2,.section--blue h3{ color:#fff; }
.lead{ font-size:1.2rem; color:var(--muted); max-width:60ch; }
.center{ text-align:center; }
.center .lead{ margin-inline:auto; }

/* Eyebrow z sygnaturą łuku (motyw logo) */
.eyebrow{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--ff-display); font-weight:700; font-size:.82rem; letter-spacing:.16em;
  text-transform:uppercase; color:var(--blue-700); margin-bottom:14px;
}
.section--blue .eyebrow{ color:var(--yellow); }

/* --- Przyciski ---------------------------------------------------------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family:var(--ff-display); font-weight:700; font-size:1rem;
  padding:15px 28px; border-radius:999px; border:2px solid transparent;
  cursor:pointer; text-decoration:none; transition:transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn--primary{ background:var(--blue-700); color:#fff; box-shadow:var(--shadow-sm); }
.btn--primary:hover{ background:var(--blue-600); }
.btn--accent{ background:var(--yellow); color:#1A1A1A; }
.btn--accent:hover{ background:var(--yellow-soft); }
.btn--ghost{ background:var(--card); color:#1A1A1A; border-color:var(--line); }
.btn--ghost:hover{ border-color:var(--blue); }
.section--blue .btn--ghost{ background:transparent; color:#fff; border-color:rgba(255,255,255,.5); }

/* --- Nagłówek / nawigacja ---------------------------------------------- */
.site-header{
  position:sticky; top:0; z-index:100; background:#fff;
  backdrop-filter:blur(10px); border-bottom:1px solid #E2E8EF;
}
.site-header .nav__links a{ color:#1A1A1A; }
.site-header .nav__links a:hover{ color:var(--blue-700); }
.site-header .btn--primary{ color:#fff; }
.nav{ position:relative; display:flex; align-items:center; justify-content:space-between; gap:24px; padding:14px 0; }
.nav__logo{ display:flex; align-items:center; flex:none; }
.nav__logo img{ height:52px; width:auto; max-width:none; }
.nav__links{ display:flex; align-items:center; gap:28px; list-style:none; margin:0; padding:0; }
.nav__links a{
  font-family:var(--ff-display); font-weight:600; font-size:.95rem; color:#4F4A47;
  text-decoration:none; padding:6px 2px; border-bottom:2px solid transparent;
}
.nav__links a:hover{ color:var(--blue-700); border-bottom-color:var(--yellow); }
.nav__cta{ display:flex; align-items:center; gap:12px; }
.nav__eu{ display:inline-flex; align-items:center; flex:none; }
.nav__eu img{ height:38px; width:auto; display:block; }
.nav__toggle{
  display:none; background:none; border:0; cursor:pointer; padding:8px;
  width:46px; height:46px; border-radius:10px;
}
.nav__toggle span,.nav__toggle span::before,.nav__toggle span::after{
  content:""; display:block; width:24px; height:2.5px; background:#2A2724; border-radius:2px; transition:.2s;
}
.nav__toggle span::before{ transform:translateY(-7px); } .nav__toggle span::after{ transform:translateY(7px); position:relative; top:-2.5px;}

/* --- Hero --------------------------------------------------------------- */
.hero{ position:relative; padding:64px 0 72px; overflow:hidden; }
.hero__grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:stretch; }
.hero__copy{ align-self:center; }
.hero__illus-wrap{
  display:flex; align-items:center; justify-content:center;
  padding:24px; border-radius:24px; box-shadow:var(--shadow);
  background:linear-gradient(155deg, #EAF3FB 0%, #F6FAFD 55%, #FFF6E3 100%);
}
.hero__illus-wrap img{
  width:100%; height:auto; max-height:520px; object-fit:contain;
  border-radius:14px;
}
.hero__badge{
  display:inline-flex; align-items:center; gap:10px; background:var(--surface-2);
  color:var(--blue-700); font-weight:700; font-size:.85rem; padding:8px 16px; border-radius:999px; margin-bottom:20px;
  font-family:var(--ff-display);
}
.hero h1 span{ color:var(--blue); }
.hero__actions{ display:flex; flex-wrap:wrap; gap:14px; margin-top:30px; }
.hero__stats{ display:flex; gap:36px; margin-top:40px; flex-wrap:wrap; }
.hero__stat b{ font-family:var(--ff-display); font-size:1.9rem; color:var(--ink); display:block; line-height:1; }
.hero__stat span{ font-size:.92rem; color:var(--muted); }
.cr-hero-illus{ filter:drop-shadow(var(--shadow)); }

/* animacja łuków skanujących (wyłączana przy reduced-motion) */
.cr-scan{ transform-origin:225px 355px; animation:scan 5s ease-in-out infinite; }
@keyframes scan{ 0%,100%{ opacity:.35; transform:translateX(0); } 50%{ opacity:.95; transform:translateX(10px); } }

/* --- "Jak to działa" — kroki ------------------------------------------- */
.steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:22px; margin-top:48px; counter-reset:step; }
.step{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:28px 24px; position:relative; }
.step__num{
  counter-increment:step; font-family:var(--ff-display); font-weight:800; font-size:.85rem;
  color:var(--blue-700); letter-spacing:.05em;
}
.step__num::before{ content:"0" counter(step); }
.step__icon{ width:48px; height:48px; margin:14px 0 16px; color:var(--blue); }
.step h3{ margin-bottom:8px; }
.step p{ margin:0; font-size:.98rem; color:var(--muted); }

/* --- Wartość — karty ---------------------------------------------------- */
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin-top:48px; }
.card{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:30px 26px;
  box-shadow:var(--shadow-sm); transition:transform .18s ease, border-color .18s ease;
}
.card:hover{ transform:translateY(-4px); border-color:var(--blue); }
.card__icon{
  width:54px; height:54px; border-radius:14px; background:var(--surface-2);
  display:flex; align-items:center; justify-content:center; color:var(--blue-700); margin-bottom:18px;
}
.card__icon svg{ width:30px; height:30px; }
.card h3{ margin-bottom:10px; }
.card p{ margin:0; color:var(--muted); font-size:1rem; }

/* --- Oferta ------------------------------------------------------------- */
.offer{ display:grid; grid-template-columns:repeat(2,1fr); gap:26px; margin-top:48px; }
.plan{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:34px 30px; position:relative;
}
.plan--featured{ border:2px solid var(--blue); box-shadow:var(--shadow); }
.plan__tag{
  position:absolute; top:-13px; left:30px; background:var(--yellow); color:var(--ink);
  font-family:var(--ff-display); font-weight:700; font-size:.78rem; padding:5px 14px; border-radius:999px;
}
.plan h3{ font-size:1.4rem; }
.plan__price{ font-family:var(--ff-display); font-weight:800; color:var(--ink); font-size:2.1rem; margin:10px 0 4px; }
.plan__price small{ font-size:1rem; font-weight:600; color:var(--muted); }
.plan__note{ color:var(--muted); font-size:.95rem; margin-bottom:18px; }
.plan ul{ list-style:none; margin:0 0 24px; padding:0; }
.plan li{ display:flex; gap:12px; padding:9px 0; border-top:1px solid var(--line); font-size:1rem; }
.plan li::before{ content:"✓"; color:var(--blue-700); font-weight:800; flex:none; }
.offer__pilot{
  margin-top:26px; background:var(--surface-2); border-radius:var(--radius); padding:24px 28px;
  display:flex; gap:18px; align-items:center;
}
.offer__pilot .badge{ background:var(--yellow); color:var(--ink); font-family:var(--ff-display); font-weight:800; padding:10px 16px; border-radius:12px; white-space:nowrap; }

/* --- Kontakt / formularz ----------------------------------------------- */
.contact{ display:grid; grid-template-columns:.85fr 1.15fr; gap:48px; align-items:start; }
.contact__info a{ color:#fff; font-weight:700; }
.contact__channels{ list-style:none; padding:0; margin:24px 0 0; display:grid; gap:14px; }
.contact__channels li{ display:flex; gap:14px; align-items:center; }
.contact__channels svg{ width:24px; height:24px; flex:none; color:var(--yellow); }
.form{ background:var(--card); border-radius:var(--radius); padding:32px; box-shadow:var(--shadow); }
.form__row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-family:var(--ff-display); font-weight:600; font-size:.92rem; color:var(--ink); margin-bottom:7px; }
.field .req{ color:var(--err); }
.field input,.field textarea{
  width:100%; font:inherit; font-size:1rem; color:var(--ink); padding:13px 15px;
  border:1.5px solid var(--line); border-radius:var(--radius-sm); background:var(--card); transition:border-color .15s ease;
}
.field input:focus,.field textarea:focus{ border-color:var(--blue); outline:none; box-shadow:0 0 0 3px rgba(27,135,201,.18); }
.field textarea{ min-height:120px; resize:vertical; }
.consent{ display:flex; gap:12px; align-items:flex-start; font-size:.86rem; color:var(--muted); margin-bottom:20px; }
.consent input{ width:20px; height:20px; margin-top:3px; flex:none; accent-color:var(--blue-700); }
.consent a{ color:var(--blue-700); }
.hp{ position:absolute !important; left:-9999px !important; width:1px; height:1px; overflow:hidden; }
.form__msg{ padding:13px 16px; border-radius:var(--radius-sm); margin-bottom:18px; font-size:.95rem; font-weight:600; }
.form__msg--ok{ background:#E7F5EE; color:var(--ok); border:1px solid #BFE6D2; }
.form__msg--err{ background:#FCEAEA; color:var(--err); border:1px solid #F3C9C9; }

/* --- Sekcja projektu UE ------------------------------------------------- */
.eu{ background:var(--surface); }
.eu__facts{ display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin:26px 0; }
.eu__fact{ background:var(--card); border:1px solid var(--line); border-radius:var(--radius-sm); padding:18px 20px; }
.eu__fact b{ display:block; font-family:var(--ff-display); color:var(--ink); }
.eu__values{ display:flex; gap:20px; flex-wrap:wrap; margin:24px 0; }
.eu__value{ background:var(--blue-700); color:#fff; border-radius:var(--radius); padding:20px 26px; flex:1 1 220px; }
.eu__value span{ font-size:.85rem; opacity:.85; } .eu__value b{ font-family:var(--ff-display); font-size:1.6rem; display:block; }
.eu__tags{ font-family:var(--ff-display); font-weight:700; color:var(--blue-700); }
.eu__signs{ background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:24px; margin-top:24px; }
.eu__signs img{ width:100%; max-width:760px; margin-inline:auto; }

/* --- Stopka ------------------------------------------------------------- */
.footer{ background:var(--ink); color:#CFC9C4; padding:56px 0 28px; font-size:.95rem; }
.footer a{ color:#fff; }
.footer__top{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:36px; }
.footer__logo img{ height:40px; filter:brightness(0) invert(1); margin-bottom:14px; }
.footer h4{ color:#fff; font-family:var(--ff-display); font-size:1rem; margin:0 0 14px; }
.footer ul{ list-style:none; margin:0; padding:0; display:grid; gap:9px; }
.footer__eu{
  margin-top:36px; padding-top:24px; border-top:1px solid rgba(255,255,255,.14);
  display:grid; gap:18px; grid-template-columns:1fr auto; align-items:center;
}
.footer__eu img{ background:#fff; padding:12px 16px; border-radius:12px; max-width:100%; }
.footer__eu p{ margin:0; font-size:.85rem; color:#B7B1AC; max-width:62ch; text-align:justify; hyphens:auto; }
.footer__bottom{ margin-top:24px; padding-top:18px; border-top:1px solid rgba(255,255,255,.14); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:.85rem; color:#B7B1AC; }
.footer__bottom a{ color:#CFC9C4; }

/* --- Baner cookies ------------------------------------------------------ */
.cookie{
  position:fixed; left:16px; right:16px; bottom:16px; z-index:150; max-width:760px; margin-inline:auto;
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius); box-shadow:var(--shadow);
  padding:22px 24px; display:none;
}
.cookie.is-open{ display:block; }
.cookie p{ margin:0 0 16px; font-size:.92rem; color:var(--graphite); }
.cookie a{ color:var(--blue-700); }
.cookie__actions{ display:flex; gap:12px; flex-wrap:wrap; }
.cookie__actions .btn{ padding:11px 22px; font-size:.92rem; }

/* --- Treść stron prawnych (polityka prywatności) ----------------------- */
.legal{ max-width:820px; }
.legal h2{ margin-top:40px; font-size:1.5rem; }
.legal h3{ margin-top:24px; }
.legal ul{ padding-left:22px; } .legal li{ margin-bottom:7px; }

/* --- RWD ---------------------------------------------------------------- */
@media (max-width:980px){
  .hero__grid{ grid-template-columns:1fr; align-items:stretch; }
  .hero__illus-wrap{ order:-1; max-width:560px; width:100%; margin-inline:auto; padding:16px; }
  .hero__illus-wrap img{ max-height:none; }
  .steps{ grid-template-columns:repeat(2,1fr); }
  .cards{ grid-template-columns:1fr 1fr; }
  .contact{ grid-template-columns:1fr; }
  .footer__top{ grid-template-columns:1fr 1fr; }
  .footer__eu{ grid-template-columns:1fr; }
}
@media (max-width:760px){
  body{ font-size:17px; }
  .section{ padding:64px 0; }
  .nav{ gap:12px; }
  .nav__cta{ gap:8px; }
  .nav__links,.nav__cta .btn--ghost{ display:none; }
  .nav__logo img{ height:42px; }
  .nav__eu img{ height:30px; }
  .nav__toggle{ display:flex; align-items:center; justify-content:center; }
  .nav.is-open .nav__links{
    display:flex; flex-direction:column; position:absolute; left:0; right:0; top:100%;
    background:#fff; border-bottom:1px solid #E2E8EF; padding:18px 24px; gap:14px;
  }
  .nav.is-open .nav__links a{ font-size:1.1rem; }
  .steps,.cards,.offer,.eu__facts,.form__row{ grid-template-columns:1fr; }
  .footer__top{ grid-template-columns:1fr; }
  .offer__pilot{ flex-direction:column; align-items:flex-start; }
}
/* Wąskie telefony: ukrywamy przycisk "Kontakt" z belki (jest w menu),
   dajemy więcej miejsca logo i znakowi UE, by belka się nie rozjeżdżała. */
@media (max-width:560px){
  .nav{ gap:10px; }
  .nav__cta .btn--primary{ display:none; }
  .nav__logo img{ height:38px; }
  .nav__eu img{ height:27px; }
  .theme-toggle{ width:38px; height:38px; }
}

/* ==========================================================================
   TRYB CIEMNY — przełącznik w belce (jasny / ciemny).
   Start bez zapisanego wyboru = ustawienie systemu; wybór jest zapamiętywany.
   Belka pozostaje biała w obu motywach. Kolory pod kontrast WCAG 2.1 AA.
   ========================================================================== */
html[data-theme="dark"]{
  --blue:        #4FA8E6;
  --blue-600:    #2E93D6;
  --blue-700:    #0E5A8A;   /* zostaje ciemny — tła przycisków z białym tekstem */
  --yellow:      #FCBA00;
  --yellow-soft: #FFD45E;
  --ink:         #F2F6FA;   /* nagłówki */
  --graphite:    #C9D4DF;   /* tekst podstawowy */
  --muted:       #9DAAB7;   /* tekst drugorzędny (kontrast AA na ciemnym tle) */
  --bg:          #0F1620;
  --surface:     #141E29;
  --surface-2:   #1C2A38;
  --card:        #19232F;
  --header-bg:   rgba(15,22,32,.92);
  --line:        #2B3B4B;
  --shadow:      0 18px 48px -24px rgba(0,0,0,.7);
  --shadow-sm:   0 6px 20px -12px rgba(0,0,0,.6);
}
html[data-theme="dark"] a{ color:#7CC0EE; }
html[data-theme="dark"] :focus-visible{ outline-color:var(--blue); }
html[data-theme="dark"] .card__icon,
html[data-theme="dark"] .step__icon{ color:var(--blue); }   /* ikony czytelne na ciemnym chipie */
html[data-theme="dark"] .btn--primary{ color:#fff; }
html[data-theme="dark"] .btn--accent{ color:#1A1A1A; }
html[data-theme="dark"] .btn--ghost{ background:var(--card); color:#F2F6FA; border-color:var(--line); }
html[data-theme="dark"] input,
html[data-theme="dark"] textarea{ color:var(--ink); }
html[data-theme="dark"] input::placeholder,
html[data-theme="dark"] textarea::placeholder{ color:var(--muted); }
html[data-theme="dark"] .footer{ background:#0A0F16; }
html[data-theme="dark"] .hero__illus-wrap{
  background:linear-gradient(155deg, var(--surface-2) 0%, var(--surface) 70%);
}
/* Znaki UE w sekcji "Projekt UE" i w stopce mają białe tło niezależnie od motywu;
   znak w belce jest zawsze na białej belce, więc nie wymaga osobnej poduszki. */

/* --- Przełącznik motywu ------------------------------------------------- */
.theme-toggle{
  display:inline-flex; align-items:center; justify-content:center;
  width:42px; height:42px; flex:none; cursor:pointer;
  border:1px solid #E2E8EF; border-radius:10px;
  background:#fff; color:#2A2724;
  transition:border-color .15s ease, background .15s ease;
}
.theme-toggle:hover{ border-color:var(--blue); }
.theme-toggle svg{ width:20px; height:20px; display:block; }
.theme-toggle__i{ display:none; }
.theme-toggle:not([data-choice]) .theme-toggle__i--light{ display:block; }
.theme-toggle[data-choice="light"] .theme-toggle__i--light{ display:block; }
.theme-toggle[data-choice="dark"]  .theme-toggle__i--dark{ display:block; }

/* =========================================================================
   WARSTWA ANIMACJI (GSAP + Lenis) — style towarzyszące.
   Wszystko aktywne tylko, gdy ruch dozwolony; przy prefers-reduced-motion
   animacje są wyłączane globalną regułą wyżej, a elementy są widoczne.
   ========================================================================= */

/* Lenis — płynne, bezwładne przewijanie */
html.lenis, html.lenis body{ height:auto; }
.lenis.lenis-smooth{ scroll-behavior:auto !important; }
.lenis.lenis-stopped{ overflow:hidden; }
.lenis.lenis-smooth iframe{ pointer-events:none; }

/* Ukrycie elementów do animacji PRZED pierwszym malowaniem (klasa z <head>).
   animations.js zdejmuje .anim-ready, jeśli animacji nie uruchamia. */
.anim-ready [data-reveal]{ opacity:0; transform:translateY(28px); }

/* Pasek postępu przewijania */
.scroll-progress{
  position:fixed; top:0; left:0; right:0; height:3px; z-index:200;
  background:linear-gradient(90deg, var(--blue), var(--yellow));
  transform:scaleX(0); transform-origin:0 50%; will-change:transform;
}

/* Hero — subtelna "poświata" w barwach marki (auto-stop przy reduced-motion) */
.hero{ z-index:0; }
.hero::before{
  content:""; position:absolute; inset:-12% -12% auto -12%; height:130%; z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(42% 52% at 18% 22%, rgba(27,135,201,.16), transparent 70%),
    radial-gradient(38% 48% at 86% 16%, rgba(252,186,0,.13), transparent 72%);
  animation:cr-aurora 16s ease-in-out infinite alternate;
}
@keyframes cr-aurora{
  from{ transform:translate3d(0,0,0) scale(1); }
  to{ transform:translate3d(0,-3%,0) scale(1.06); }
}
.hero__illus-wrap{ overflow:hidden; }

/* Animowane podkreślenie linków w menu */
.site-header .nav__links a{ position:relative; }
.site-header .nav__links a::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background:var(--blue); transform:scaleX(0); transform-origin:0 50%;
  transition:transform .3s ease;
}
.site-header .nav__links a:hover::after,
.site-header .nav__links a:focus-visible::after{ transform:scaleX(1); }

/* Karty — kontekst 3D dla przechyłu pod kursorem */
.card, .plan{ transform-style:preserve-3d; }

/* ===== "Jak to działa" — obrotowy bęben ================================
   Domyślnie (bez JS / telefon / reduced-motion): karty jedna pod drugą.
   Efekt bębna włącza się dopiero z klasą .js-anim i na szerokich ekranach. */
.drum__viewport{ display:flex; flex-direction:column; gap:24px; margin-top:48px; }
.drum__card{
  display:grid; grid-template-columns:1fr; gap:20px; align-items:center;
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius);
  padding:24px; box-shadow:var(--shadow-sm);
}
.drum__media{ margin-inline:auto; max-width:360px; width:100%; }
.drum__media img{ width:100%; height:auto; border-radius:14px; display:block; }
.drum__num{
  font-family:var(--ff-display); font-weight:800; font-size:1rem;
  color:var(--blue-700); letter-spacing:.05em; display:block; margin-bottom:6px;
}
.drum__body h3{ margin:0 0 10px; }
.drum__body p{ margin:0; color:var(--muted); }
.drum__dots{ display:none; }

@media (min-width:761px){
  /* układ poziomy karty: grafika po lewej, treść po prawej */
  .drum__card{ grid-template-columns:minmax(0,44%) 1fr; gap:44px; padding:40px; }
  .drum__media{ max-width:none; }
  .drum__body h3{ font-size:1.6rem; }
  .drum__body p{ font-size:1.05rem; }

  /* tryb bębna — tylko gdy animacje aktywne */
  .js-anim #jak-to-dziala{ padding-block:72px; }
  .js-anim .drum{ position:relative; }
  .js-anim .drum__viewport{
    position:relative; height:clamp(340px,56vh,480px); margin-top:8px; perspective:1400px;
  }
  .js-anim .drum__card{
    position:absolute; inset:0; margin:0; overflow:hidden;
    transform-style:preserve-3d; backface-visibility:hidden; will-change:transform,opacity;
  }
  .js-anim .drum__media img{
    max-height:clamp(240px,40vh,360px); width:auto; max-width:100%; margin-inline:auto;
  }
  .js-anim .drum__dots{ display:flex; justify-content:center; gap:12px; margin-top:22px; }
  .js-anim .drum__dot{
    width:10px; height:10px; border-radius:50%; background:var(--line);
    transition:background .3s ease, transform .3s ease;
  }
  .js-anim .drum__dot.is-active{ background:var(--blue); transform:scale(1.35); }
}