/* =========================================================================
   InfoSzczecin.pl — Design System 2026
   Koncepcja przewodnia: "Cegła i szkło nad Odrą"
   Hanzeatycka cegła Starego Miasta (accent rdzawy) spotyka szkło Filharmonii
   (accent morski) na tle porannej mgły znad rzeki. Miasto ma dwie twarze —
   jasną, turystyczną i mroczniejszą, archiwalną — stąd dwa tryby sekcji:
   jasny (--bg) i "archiwalny" (.section-mroczny, ciemny, na wzór starej
   płyty pamiątkowej). Sygnatura: linia rzeki jako separator sekcji i pasek
   postępu przewijania (.river-progress), oraz seria autorskich ilustracji
   linearnych (sylwetki Wałów Chrobrego, Zamku, Filharmonii, katedry) użytych
   zamiast stockowej fotografii.
   ========================================================================= */

:root{
  /* --- Kolory --- */
  --bg:            #F1F5F4;
  --surface:       #FFFFFF;
  --surface-2:     #E7EFEC;
  --ink:           #0E1F2B;
  --ink-soft:      #32444E;
  --muted:         #5C6E74;
  --line:          rgba(14,31,43,0.10);
  --line-strong:   rgba(14,31,43,0.20);

  --primary:       #0B3B52;
  --primary-dark:  #082A3C;
  --primary-light: #14526F;

  --accent:        #A8431C;
  --accent-dark:   #832F12;
  --accent-light:  #D97A4C;

  --accent-2:      #3F7C6E;
  --accent-2-dark: #2E5D53;
  --accent-2-light:#7FB3A4;

  --gold:          #B08B3B;

  /* tryb "mroczny" (archiwalny) */
  --dark-bg:       #0C1A22;
  --dark-surface:  #142833;
  --dark-line:     rgba(233,238,236,0.12);
  --dark-ink:      #EDF2EF;
  --dark-muted:    #9FB1B6;

  /* --- Typografia --- */
  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body:    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, Menlo, monospace;

  /* --- Skala przestrzeni --- */
  --space-1: 0.4rem;
  --space-2: 0.8rem;
  --space-3: 1.6rem;
  --space-4: 2.4rem;
  --space-5: 4rem;
  --space-6: 6.4rem;
  --space-7: 9.6rem;

  --radius-s: 6px;
  --radius-m: 14px;
  --radius-l: 28px;
  --radius-xl: 40px;

  --shadow-s: 0 2px 10px rgba(11,59,82,0.07);
  --shadow-m: 0 12px 32px rgba(11,59,82,0.11);
  --shadow-l: 0 24px 64px rgba(11,59,82,0.18);

  --ease: cubic-bezier(.22,.61,.36,1);
  --header-h: 84px;
}

/* =========================================================================
   Reset + bazowe
   ========================================================================= */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ padding: 0; margin: 0; list-style: none; }
h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--ink);
  line-height: 1.12;
  margin: 0 0 var(--space-3);
  font-weight: 600;
  text-wrap: balance;
}
h1{ font-size: clamp(2.5rem, 4.6vw, 4.4rem); font-weight: 500; letter-spacing: -0.01em; }
h2{ font-size: clamp(1.9rem, 3vw, 2.75rem); font-weight: 500; }
h3{ font-size: clamp(1.25rem, 1.7vw, 1.6rem); font-weight: 600; }
h4{ font-size: 1.1rem; font-weight: 700; }
p{ margin: 0 0 var(--space-3); }
strong{ color: var(--ink); font-weight: 700; }
.container-wide{ max-width: 1280px; margin: 0 auto; padding: 0 var(--space-4); }
.container-narrow{ max-width: 800px; margin: 0 auto; padding: 0 var(--space-4); }

::selection{ background: var(--accent); color: #fff; }

:focus-visible{
  outline: 3px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link{
  position:absolute; left:-999px; top:auto; background:var(--primary); color:#fff;
  padding: 0.8rem 1.4rem; border-radius: var(--radius-s); z-index: 999; font-weight:600;
}
.skip-link:focus{ left: var(--space-3); top: var(--space-3); }

/* lazy-load fade-in */
img[loading="lazy"]{ background: var(--surface-2); }

/* =========================================================================
   Pasek postępu przewijania — "rzeka"
   ========================================================================= */
.river-progress{
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--accent-2), var(--primary-light), var(--accent));
  z-index: 1000; transition: width 0.1s linear;
}

/* =========================================================================
   Utility
   ========================================================================= */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  margin-bottom: var(--space-2);
  font-weight: 500;
}
.eyebrow::before{ content: ""; width: 22px; height: 1px; background: var(--accent); }
.eyebrow.on-dark{ color: var(--accent-light); }
.eyebrow.on-dark::before{ background: var(--accent-light); }

.lede{ font-size: 1.2rem; color: var(--ink-soft); max-width: 60ch; }

.btn{
  display: inline-flex; align-items: center; gap: 0.6em;
  font-family: var(--font-body); font-weight: 600; font-size: 0.98rem;
  padding: 0.95rem 1.7rem; border-radius: 999px; border: 1px solid transparent;
  cursor: pointer; transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
}
.btn-primary{ background: var(--accent); color: #fff; box-shadow: var(--shadow-s); }
.btn-primary:hover{ background: var(--accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-m); }
.btn-ghost{ background: transparent; color: var(--primary); border-color: var(--line-strong); }
.btn-ghost:hover{ background: var(--surface); border-color: var(--primary); transform: translateY(-2px); }
.btn-ghost.on-dark{ color: var(--dark-ink); border-color: var(--dark-line); }
.btn-ghost.on-dark:hover{ background: rgba(255,255,255,0.06); border-color: var(--dark-ink); }
.btn-sm{ padding: 0.6rem 1.15rem; font-size: 0.88rem; }

.badge{
  display: inline-flex; align-items: center; gap: 0.4em;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.06em;
  text-transform: uppercase; padding: 0.35em 0.8em; border-radius: 999px;
  background: var(--surface-2); color: var(--primary); font-weight: 600;
}
.badge-accent{ background: rgba(168,67,28,0.10); color: var(--accent); }
.badge-dark{ background: rgba(255,255,255,0.08); color: var(--dark-ink); }

/* =========================================================================
   Nagłówek / nawigacja
   ========================================================================= */
.site-header{
  position: sticky; top: 0; z-index: 500;
  height: var(--header-h);
  display: flex; align-items: center;
  background: rgba(241,245,244,0.82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled{ box-shadow: 0 8px 30px rgba(11,59,82,0.08); }
.header-inner{
  width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 var(--space-4);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4);
}
.brand{ display: flex; align-items: center; gap: 0.65rem; font-family: var(--font-display); font-weight: 600; font-size: 1.28rem; color: var(--ink); }
.brand-mark{ width: 34px; height: 34px; flex: none; }
.brand small{ display:block; font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: .12em; color: var(--muted); font-weight: 500; text-transform: uppercase; }

.nav-desktop{ display: flex; align-items: center; gap: var(--space-3); }
.nav-desktop ul{ display: flex; gap: 1.35rem; }
.nav-desktop a{
  font-size: 0.92rem; font-weight: 600; color: var(--ink-soft); position: relative; padding: 0.4rem 0.05rem;
  white-space: nowrap;
}
.nav-desktop a::after{
  content:""; position:absolute; left:0; bottom:-4px; width:0; height:2px; background:var(--accent);
  transition: width .25s var(--ease);
}
.nav-desktop a:hover::after, .nav-desktop a[aria-current="page"]::after{ width: 100%; }
.nav-desktop a[aria-current="page"]{ color: var(--accent); }
.header-cta{ display:flex; align-items:center; gap: var(--space-3); }
.header-phone{ display:flex; flex-direction:column; align-items:flex-end; font-size:0.82rem; color:var(--muted); }
.header-phone a{ font-weight:700; color: var(--primary); font-family: var(--font-mono); }

.nav-toggle{ display:none; width:44px; height:44px; border-radius:50%; border:1px solid var(--line-strong); background:var(--surface); align-items:center; justify-content:center; cursor:pointer; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:""; display:block; width:18px; height:2px; background:var(--ink); position:relative; transition: transform .25s var(--ease), opacity .25s var(--ease);
}
.nav-toggle span::before{ position:absolute; top:-6px; }
.nav-toggle span::after{ position:absolute; top:6px; }
.nav-toggle.is-open span{ background: transparent; }
.nav-toggle.is-open span::before{ top:0; transform: rotate(45deg); background:var(--ink); }
.nav-toggle.is-open span::after{ top:0; transform: rotate(-45deg); background:var(--ink); }

.nav-mobile{
  position: fixed; inset: var(--header-h) 0 0 0; background: var(--bg); z-index: 480;
  transform: translateY(-8px); opacity: 0; pointer-events:none; transition: opacity .25s var(--ease), transform .25s var(--ease);
  overflow-y:auto; padding: var(--space-4);
}
.nav-mobile.is-open{ opacity:1; pointer-events:auto; transform: translateY(0); }
.nav-mobile ul{ display:flex; flex-direction:column; gap: 0.2rem; }
.nav-mobile a{ display:block; padding: 1rem 0.2rem; font-size:1.3rem; font-family: var(--font-display); border-bottom:1px solid var(--line); }
.nav-mobile .header-phone{ align-items:flex-start; margin-top: var(--space-4); }

@media (max-width: 1180px){
  .nav-desktop{ display:none; }
  .nav-toggle{ display:flex; }
  .header-cta .header-phone{ display:none; }
}
@media (min-width: 1181px) and (max-width: 1320px){
  .header-cta .header-phone{ display:none; }
}

/* =========================================================================
   Breadcrumbs
   ========================================================================= */
.breadcrumbs{ font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted); padding: var(--space-3) 0; }
.breadcrumbs a{ color: var(--muted); }
.breadcrumbs a:hover{ color: var(--accent); }
.breadcrumbs .sep{ margin: 0 0.5em; opacity: .5; }
.breadcrumbs [aria-current]{ color: var(--ink-soft); }

/* =========================================================================
   Sekcje
   ========================================================================= */
section{ padding: var(--space-6) 0; position: relative; }
.section-tight{ padding: var(--space-5) 0; }
.section-alt{ background: var(--surface); }
.section-mroczny{
  background: linear-gradient(180deg, var(--dark-bg), #0A151C);
  color: var(--dark-muted);
}
.section-mroczny h1, .section-mroczny h2, .section-mroczny h3, .section-mroczny h4{ color: var(--dark-ink); }
.section-mroczny p{ color: var(--dark-muted); }
.section-mroczny .card{ background: var(--dark-surface); border-color: var(--dark-line); }
.section-mroczny strong{ color: var(--dark-ink); }

/* Rzeka — separator SVG */
.river-divider{ width:100%; height: 48px; overflow:hidden; line-height:0; }
.river-divider svg{ width:100%; height:100%; }
.river-divider.flip{ transform: scaleY(-1); }

/* =========================================================================
   Hero
   ========================================================================= */
.hero{
  padding-top: clamp(3rem, 8vw, 6rem); padding-bottom: var(--space-6);
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-5); align-items: center;
}
.hero-copy .lede{ margin-bottom: var(--space-4); }
.hero-actions{ display:flex; flex-wrap:wrap; gap: var(--space-3); align-items:center; margin-top: var(--space-4); }
.hero-stats{ display:flex; gap: var(--space-5); margin-top: var(--space-5); flex-wrap: wrap; }
.hero-stat b{ display:block; font-family: var(--font-display); font-size: 1.9rem; color: var(--primary); }
.hero-stat span{ font-size: 0.82rem; color: var(--muted); }
.hero-art{ position:relative; }
.hero-art svg{ width:100%; height:auto; }
@media (max-width: 940px){
  .hero{ grid-template-columns: 1fr; }
  .hero-art{ order:-1; max-width: 420px; margin: 0 auto; }
}

.page-hero{ padding-top: clamp(2.4rem, 6vw, 4rem); padding-bottom: var(--space-5); }
.page-hero .eyebrow{ margin-bottom: var(--space-2); }
.page-hero h1{ max-width: 20ch; }
.page-hero .lede{ margin-top: var(--space-3); }

/* =========================================================================
   Karty
   ========================================================================= */
.card{
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-m);
  padding: var(--space-4); box-shadow: var(--shadow-s); transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.card:hover{ transform: translateY(-4px); box-shadow: var(--shadow-m); border-color: var(--line-strong); }

.grid{ display:grid; gap: var(--space-4); }
.grid-2{ grid-template-columns: repeat(2, 1fr); }
.grid-3{ grid-template-columns: repeat(3, 1fr); }
.grid-4{ grid-template-columns: repeat(4, 1fr); }
@media (max-width: 940px){ .grid-3, .grid-4{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px){ .grid-2, .grid-3, .grid-4{ grid-template-columns: 1fr; } }

.card-attraction{ display:flex; flex-direction:column; gap: var(--space-2); }
.card-attraction .art{ border-radius: var(--radius-s); overflow:hidden; aspect-ratio: 4/3; background: var(--surface-2); margin-bottom: var(--space-2); }
.card-attraction .art svg{ width:100%; height:100%; }
.card-attraction .meta{ display:flex; gap: 0.6em; flex-wrap:wrap; font-size:0.78rem; color: var(--muted); font-family: var(--font-mono); }
.card-attraction h3{ margin-bottom: 0.3rem; }
.card-attraction .num{ font-family: var(--font-mono); color: var(--accent); font-size: 0.8rem; letter-spacing: .08em; }

.blog-card{ display:flex; flex-direction:column; height:100%; }
.blog-card .art{ border-radius: var(--radius-s); aspect-ratio: 16/10; margin-bottom: var(--space-3); overflow:hidden; }
.blog-card .art svg{ width:100%; height:100%; }
.blog-card .tag{ font-size:0.72rem; font-family: var(--font-mono); text-transform:uppercase; letter-spacing:.08em; color:var(--accent-2); margin-bottom:0.5rem; }
.blog-card h3{ font-size:1.2rem; }
.blog-card p{ color: var(--muted); font-size:0.95rem; flex:1; }
.blog-card .readmore{ font-weight:700; color: var(--primary); font-size:0.9rem; margin-top:auto; }
.blog-card .readmore::after{ content:" →"; transition: margin .2s var(--ease); }
.blog-card:hover .readmore::after{ margin-left: 4px; }

.quote-block{
  border-left: 3px solid var(--accent); padding: var(--space-3) var(--space-4); margin: var(--space-4) 0;
  background: var(--surface-2); border-radius: 0 var(--radius-m) var(--radius-m) 0; font-style: italic; color: var(--ink-soft);
}
.quote-block cite{ display:block; margin-top: var(--space-2); font-style:normal; font-size:0.85rem; color: var(--muted); font-family: var(--font-mono); }

.fact-box{ background: var(--surface); border: 1px dashed var(--line-strong); border-radius: var(--radius-m); padding: var(--space-4); }
.fact-box .eyebrow{ color: var(--accent-2); }
.fact-box .eyebrow::before{ background: var(--accent-2); }
.fact-box .src{ font-size:0.78rem; color: var(--muted); margin-top: var(--space-2); font-family: var(--font-mono); }

/* =========================================================================
   Feature row (na przemian)
   ========================================================================= */
.feature-row{ display:grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); align-items:center; }
.feature-row.reverse .art{ order: 2; }
.feature-row .art svg{ width:100%; }
@media (max-width: 940px){ .feature-row{ grid-template-columns:1fr; } .feature-row.reverse .art{ order:0; } }

/* =========================================================================
   Timeline (chronologia — porządkuje realne, sekwencyjne dane)
   ========================================================================= */
.timeline{ position:relative; padding-left: 2.6rem; }
.timeline::before{ content:""; position:absolute; left: 0.62rem; top:0.4rem; bottom:0.4rem; width:2px; background: linear-gradient(var(--accent-2), var(--primary), var(--accent)); }
.timeline-stop{ position:relative; padding-bottom: var(--space-5); }
.timeline-stop:last-child{ padding-bottom:0; }
.timeline-stop::before{
  content:""; position:absolute; left:-2.6rem; top: 0.3rem; width:14px; height:14px; border-radius:50%;
  background: var(--accent); border: 3px solid var(--bg); box-shadow: 0 0 0 2px var(--line-strong);
}
.section-mroczny .timeline-stop::before{ border-color: var(--dark-bg); }
.timeline-stop .when{ font-family: var(--font-mono); color: var(--accent); font-size:0.85rem; font-weight:700; letter-spacing:.04em; margin-bottom:0.3rem; display:block; }

/* Day-block (plany dnia) */
.day-block{ display:grid; grid-template-columns: 120px 1fr; gap: var(--space-3); padding: var(--space-3) 0; border-bottom: 1px solid var(--line); }
.day-block:last-child{ border-bottom:none; }
.day-block .time{ font-family: var(--font-mono); font-weight:700; color: var(--primary); font-size:0.95rem; }
.day-block h4{ margin-bottom:0.3rem; }
.day-block p{ margin-bottom:0; color: var(--muted); }
@media (max-width: 620px){ .day-block{ grid-template-columns: 1fr; gap:0.3rem; } }

/* =========================================================================
   Formularze
   ========================================================================= */
.form-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
.form-grid .full{ grid-column: 1 / -1; }
.field label{ display:block; font-size:0.85rem; font-weight:600; color: var(--ink); margin-bottom:0.4rem; }
.field input, .field select, .field textarea{
  width:100%; padding: 0.85rem 1rem; border-radius: var(--radius-s); border:1px solid var(--line-strong);
  background: var(--surface); font-family: var(--font-body); font-size:0.98rem; color: var(--ink); transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color: var(--accent-2); outline:none; }
.field textarea{ resize:vertical; min-height: 130px; }
.honeypot{ position:absolute; left:-9999px; }
.form-note{ font-size:0.8rem; color: var(--muted); margin-top: var(--space-3); }
.form-status{ font-size:0.92rem; font-weight:600; margin-top: var(--space-3); padding: 0.8rem 1rem; border-radius: var(--radius-s); display:none; }
.form-status.ok{ display:block; background: rgba(63,124,110,0.12); color: var(--accent-2-dark); }
.form-status.err{ display:block; background: rgba(168,67,28,0.12); color: var(--accent-dark); }
@media (max-width:700px){ .form-grid{ grid-template-columns:1fr; } }

/* =========================================================================
   Stopka
   ========================================================================= */
.site-footer{ background: var(--dark-bg); color: var(--dark-muted); padding-top: var(--space-6); }
.footer-grid{ display:grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: var(--space-5); padding-bottom: var(--space-5); }
.footer-brand{ display:flex; align-items:center; gap:0.6rem; font-family: var(--font-display); font-size:1.3rem; color:#fff; margin-bottom: var(--space-2); }
.footer-brand svg{ width:30px; height:30px; }
.footer-col h4{ color:#fff; font-family: var(--font-body); font-size:0.82rem; text-transform:uppercase; letter-spacing:.08em; margin-bottom: var(--space-2); }
.footer-col li{ margin-bottom: 0.6rem; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{ border-top: 1px solid var(--dark-line); padding: var(--space-3) 0 var(--space-5); display:flex; justify-content:space-between; flex-wrap:wrap; gap: var(--space-2); font-size:0.82rem; }
.footer-bottom a:hover{ color: #fff; }
@media (max-width: 940px){ .footer-grid{ grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px){ .footer-grid{ grid-template-columns: 1fr; } }

/* =========================================================================
   Back to top
   ========================================================================= */
.back-to-top{
  position: fixed; right: var(--space-3); bottom: var(--space-3); width:48px; height:48px; border-radius:50%;
  background: var(--primary); color:#fff; display:flex; align-items:center; justify-content:center;
  box-shadow: var(--shadow-m); opacity:0; pointer-events:none; transform: translateY(10px);
  transition: opacity .3s var(--ease), transform .3s var(--ease); z-index: 400; cursor:pointer; border:none;
}
.back-to-top.is-visible{ opacity:1; pointer-events:auto; transform: translateY(0); }

/* =========================================================================
   Scroll reveal fallback (jeżeli AOS niedostępny)
   ========================================================================= */
/* Content is visible by default (no-JS / JS-blocked users always see everything).
   Only once html.js confirms scripting is available do we hide-then-reveal for the
   animation — progressive enhancement, never regressive. */
html.js [data-reveal]{ opacity:0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
html.js [data-reveal].is-visible{ opacity:1; transform:none; }

/* =========================================================================
   Strony błędów
   ========================================================================= */
.error-page{ min-height: 60vh; display:flex; align-items:center; }
.error-code{ font-family: var(--font-display); font-size: clamp(4rem,14vw,9rem); color: var(--accent); line-height:1; }

/* Skeleton chip list */
.chip-row{ display:flex; flex-wrap:wrap; gap:0.6rem; }
.chip{ padding:0.5rem 1rem; border-radius:999px; background:var(--surface-2); font-size:0.85rem; font-weight:600; color:var(--ink-soft); }

/* Numbered index badges for pillar lists (sekwencja realna: 01/08 itd.) */
.idx{ font-family: var(--font-mono); font-size:0.78rem; color: var(--muted); letter-spacing: .08em; }