/* AR Klima — główny arkusz stylów */

:root {
  --blue: #3E8FD0;
  --blue-dark: #1C5D96;
  --red: #C8203A;
  --red-dark: #9E1829;
  --ink: #16222E;
  --ink-soft: #46586B;
  --bg: #FFFFFF;
  --bg-soft: #F4F7FA;
  --border: #E2E8EF;
  --radius: 14px;
  --shadow: 0 8px 24px rgba(22, 34, 46, 0.08);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

a { color: var(--blue-dark); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 16px; font-weight: 700; }
h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 16px; color: var(--ink-soft); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 10px;
}

/* ---------- Header ---------- */
header.site {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 0 0 rgba(22,34,46,0);
  transition: box-shadow .25s ease;
}
header.site.is-scrolled {
  box-shadow: 0 4px 20px rgba(22,34,46,0.08);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  transition: padding .25s ease;
}
header.site.is-scrolled .nav { padding: 10px 0; }
.brand img { transition: height .25s ease, width .25s ease; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.15rem; color: var(--ink); }
.brand img { height: 36px; width: 36px; }
.brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 28px; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-links a { color: var(--ink); font-weight: 500; font-size: 0.95rem; }
.nav-links a:hover { color: var(--blue-dark); text-decoration: none; }
.nav-cta {
  background: var(--red);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
}
.nav-cta:hover { background: var(--red-dark); text-decoration: none; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  background: linear-gradient(135deg, var(--bg-soft) 0%, #fff 60%);
  padding: 72px 0 64px;
  border-bottom: 1px solid var(--border);
}
.hero-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
.hero p.lead { font-size: 1.1rem; max-width: 46ch; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 8px; }
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); text-decoration: none; }
.btn-outline { border-color: var(--blue); color: var(--blue-dark); background: #fff; }
.btn-outline:hover { background: var(--blue); color: #fff; text-decoration: none; }
.hero-art {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat-num { font-size: 1.8rem; font-weight: 700; color: var(--blue-dark); }
.stat-label { font-size: 0.85rem; color: var(--ink-soft); }

/* ---------- Sections ---------- */
section { padding: 72px 0; }
section.alt { background: var(--bg-soft); }
.section-head { max-width: 640px; margin-bottom: 40px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--bg-soft);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  font-size: 1.4rem;
}
.card a.card-link { font-weight: 600; font-size: 0.9rem; }

.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px 10px 16px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: #fff;
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease, background .18s ease;
}
.filter-icon {
  display: inline-flex;
  font-size: 1rem;
  filter: grayscale(55%);
  opacity: 0.75;
  transition: filter .18s ease, opacity .18s ease, transform .18s ease;
}
.filter-btn:hover {
  border-color: var(--blue);
  color: var(--blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(62,143,208,0.16);
}
.filter-btn:hover .filter-icon { filter: grayscale(0%); opacity: 1; transform: scale(1.1); }
.filter-btn.is-active {
  background: linear-gradient(120deg, var(--blue-dark), var(--blue) 55%, var(--red) 130%);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 10px 22px rgba(28,93,150,0.28);
}
.filter-btn.is-active .filter-icon { filter: grayscale(0%); opacity: 1; }
.filter-btn.is-active:hover { transform: translateY(-2px); }

.gallery { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.gallery img.is-hidden { display: none; }
.gallery img { border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; width: 100%; }

.cta-band {
  background: linear-gradient(120deg, var(--blue-dark), var(--blue));
  color: #fff;
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
}
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.88); }
.cta-band .btn-primary { background: var(--red); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.info-list { list-style: none; padding: 0; margin: 0; }
.info-list li { padding: 10px 0; border-bottom: 1px solid var(--border); display: flex; gap: 10px; }
.info-list li:last-child { border-bottom: none; }
.info-list .label { color: var(--ink-soft); min-width: 140px; }

/* ---------- Footer ---------- */
footer.site {
  background: var(--ink);
  color: #C7D1DB;
  padding: 48px 0 24px;
}
footer.site a { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; margin-bottom: 32px; }
footer.site h4 { color: #fff; font-size: 0.95rem; margin-bottom: 14px; }
footer.site ul { list-style: none; padding: 0; margin: 0; }
footer.site li { margin-bottom: 8px; font-size: 0.9rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 20px;
  font-size: 0.82rem;
  color: #8793A1;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- Breadcrumb / service page header ---------- */
.page-header {
  background: var(--bg-soft);
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 14px; }
.breadcrumb a { color: var(--ink-soft); }

.check-list { list-style: none; padding: 0; margin: 0 0 20px; }
.check-list li { padding-left: 28px; position: relative; margin-bottom: 10px; }
.check-list li::before {
  content: "✓";
  position: absolute; left: 0; top: 0;
  color: var(--blue-dark); font-weight: 700;
}

/* ---------- Motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

.btn { transition: background-color .18s ease, color .18s ease, transform .18s ease, box-shadow .18s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(200,32,58,0.22); }
.btn-outline:hover { box-shadow: 0 10px 24px rgba(62,143,208,0.22); }

.card-icon { transition: transform .25s ease, background-color .25s ease; }
.card:hover .card-icon { transform: scale(1.1) rotate(-4deg); background: #EAF2FA; }

.gallery img { transition: transform .35s ease; }
.gallery img:hover { transform: scale(1.03); }

.nav-links a { position: relative; }
.nav-links a:not(.nav-cta)::after {
  content: "";
  position: absolute; left: 0; bottom: -4px;
  width: 0; height: 2px;
  background: var(--red);
  transition: width .2s ease;
}
.nav-links a:not(.nav-cta):hover::after { width: 100%; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
  .btn, .card-icon, .gallery img { transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 20px 24px; border-bottom: 1px solid var(--border); display: none; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; background: none; border: none; font-size: 1.6rem; cursor: pointer; }
  .hero-grid, .grid-3, .grid-2, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  section { padding: 48px 0; }
}