:root {
  --color-primary: #3a3936;
  --color-primary-hover: #2f2e2b;
  --color-secondary: #b8955a;
  --color-secondary-hover: #9f7f49;
  --color-accent: #d8c3a5;
  --color-accent-soft: #efe6d8;
  --color-bg: #f7f3ee;
  --color-bg-soft: #fbf8f3;
  --color-bg-section: #f1e8dc;
  --color-surface: #ffffff;
  --color-text: #2f2d2a;
  --color-text-muted: #6f6a63;
  --color-heading: #2f2e2b;
  --status-wolne-bg: var(--color-secondary);
  --status-wolne-text: var(--color-surface);
  --status-zarezerwowane-bg: color-mix(in srgb, var(--color-secondary) 55%, var(--color-primary));
  --status-zarezerwowane-text: var(--color-surface);
  --status-sprzedane-bg: var(--color-accent);
  --status-sprzedane-text: var(--color-primary);

  --bp-mobile: 767px;
  --bp-tablet: 768px;
  --bp-desktop: 1280px;

  --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-size-xs: 0.875rem;
  --font-size-sm: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 3rem;
  --line-height-tight: 1.2;
  --line-height-base: 1.6;
  --line-height-relaxed: 1.8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  line-height: var(--line-height-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 120px;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  font-family: var(--font-family-base);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  text-rendering: optimizeLegibility;
}

main {
  flex: 1 0 auto;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-heading);
  font-weight: 600;
  line-height: var(--line-height-tight);
}

h1 {
  font-size: var(--font-size-2xl);
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-lg);
}

h4,
h5,
h6,
p,
li,
a,
button,
input,
textarea,
select {
  font-size: var(--font-size-sm);
}

p,
li {
  line-height: var(--line-height-base);
}

img,
svg,
iframe {
  max-width: 100%;
}

button,
a,
input,
select,
textarea {
  touch-action: manipulation;
}

.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 999;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background-color: var(--color-secondary);
  color: var(--color-surface);
  opacity: 0;
  visibility: hidden;
  cursor: pointer;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

@media (min-width: 1024px) {
  .back-to-top {
    display: none;
  }
}

@media (max-width: 767px) {
  html {
    scroll-padding-top: 170px;
  }

  body {
    font-size: 0.95rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }
}