/* ==========================================================================
   layout.css — układ strony, header, karuzela, main, footer
   Wymaga: variables.css (tokeny kolorów, spacing, --header-h)
   ========================================================================== */

/* --- Tokeny layoutu (karuzela) --- */
:root {
  --carousel-gap: 60px;
  --carousel-logo-size: 20px;
  --carousel-set-width: 2900px;
  --carousel-loop-shift: 2960px;
  --carousel-track-min-width: 8000px;
  --carousel-speed-px: 1;
  --carousel-duration: 100s;
  --carousel-row-h: 36px;
  --site-header-chrome-h: calc(var(--header-h) + var(--carousel-row-h));
  --site-top-offset: var(--site-header-chrome-h);
  --page-gutter: var(--space-16);
  --header-max: 1420px;
  --header-gutter: 10px;
  --chrome-elevation-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.1);
  --sidebar-edge-shadow: 4px 0 10px 0 rgba(0, 0, 0, 0.1);
  --sidebar-offset: var(--space-12);
  --sidebar-radius: var(--radius-12);
}

/* --- Reset / baza strony --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  height: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  color-scheme: only light;
  background-color: var(--bg);
  color: var(--fg);
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-16);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  padding-top: var(--site-top-offset);
}

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

a {
  color: inherit;
}

/* Przełączanie light ↔ dark — kolory natychmiast, bez animacji transition */
html[data-theme-switching],
html[data-theme-switching] *,
html[data-theme-switching] *::before,
html[data-theme-switching] *::after {
  transition: none !important;
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  background: var(--header-bg);
  color: var(--header-fg);
  box-shadow: 0 0 10px 0 rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  overflow: visible;
}

.site-header__container {
  box-sizing: border-box;
  width: min(calc(100% - 2 * var(--header-gutter)), var(--header-max));
  max-width: var(--header-max);
  margin-inline: auto;
  padding-inline: var(--header-gutter);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
  width: 100%;
  height: var(--header-h);
  min-height: var(--header-h);
  box-sizing: border-box;
}

.site-header__left {
  flex: 0 1 auto;
  min-width: 0;
}

.site-header__right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex: 0 0 auto;
  gap: var(--space-8);
  min-width: 0;
}

/* Logo / marka */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-10);
  text-decoration: none;
  color: inherit;
  min-height: 44px;
}

.brand__logo {
  margin-top: 14px;
  display: block;
  width: auto;
  height: 36px;
  max-width: min(160px, 42vw);
  flex-shrink: 0;
  object-fit: contain;
  object-position: left center;
}

html[data-theme="dark"] .brand__logo--light {
  display: none;
}

html:not([data-theme="dark"]) .brand__logo--dark {
  display: none;
}

@media (min-width: 640px) {
  .brand__logo {
    height: 50px;
    max-width: 180px;
  }
}

/* ==========================================================================
   KARUZELA (w headerze)
   ========================================================================== */
.logo-carousel {
  height: var(--carousel-row-h);
  overflow: hidden;
  width: 100%;
  max-width: none;
  background: transparent;
}

.logo-carousel__track {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--carousel-gap);
  width: max-content;
  min-width: var(--carousel-track-min-width);
  height: 100%;
  animation-name: logo-carousel-scroll;
  animation-duration: var(--carousel-duration);
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  animation-play-state: running;
  will-change: transform;
  backface-visibility: hidden;
  transform: translate3d(0, 0, 0);
}

.logo-carousel__group {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: var(--carousel-gap);
  width: var(--carousel-set-width);
  min-width: var(--carousel-set-width);
  padding: 0;
  box-sizing: border-box;
}

.logo-carousel__logo {
  width: var(--carousel-logo-size);
  height: var(--carousel-logo-size);
  max-width: none;
  flex-shrink: 0;
  object-fit: contain;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

@keyframes logo-carousel-scroll {
  0% {
    transform: translate3d(0, 0, 0);
  }
  100% {
    transform: translate3d(calc(-1 * var(--carousel-loop-shift)), 0, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .logo-carousel__track {
    animation-duration: 40s;
  }
}

/* ==========================================================================
   MAIN
   ========================================================================== */
.site-main {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: var(--space-24) var(--page-gutter) var(--space-48);
  min-height: calc(100vh - var(--site-top-offset) - 120px);
}

/* ==========================================================================
   TABLET+
   ========================================================================== */
@media (min-width: 640px) {
  :root {
    --page-gutter: var(--space-20);
  }

  .site-header__right {
    gap: var(--space-10);
  }
}

@media (min-width: 900px) {
  :root {
    --page-gutter: var(--space-24);
  }

  .site-main {
    padding-top: var(--space-32);
    padding-bottom: var(--space-60);
  }
}

/* Wąski telefon — mniejsze logo, ciaśniejsze akcje */
@media (max-width: 380px) {
  .brand__logo {
    height: 32px;
    max-width: 130px;
  }

  .site-header__right {
    gap: var(--space-6);
  }
}