/* ============================================================
   KAYU — style.css
   Mobile-first, system fonts fallback + Cormorant/Inter
   ============================================================ */

:root {
  --c-bg:        #ffffff;
  --c-ink:       #1a1a22;
  --c-ink-soft:  #5a5a66;
  --c-accent:    #1d1a34;
  --c-line:      #e8e4dc;
  --c-wood:      #b08653;

  --f-display:   "Cormorant Garamond", "Times New Roman", serif;
  --f-body:      "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --s-1: .25rem;  --s-2: .5rem;  --s-3: 1rem;
  --s-4: 1.5rem;  --s-5: 2rem;   --s-6: 3rem;
  --s-7: 5rem;    --s-8: 8rem;

  --radius:    6px;
  --radius-lg: 16px;
  --shadow:    0 10px 30px -10px rgba(20,20,30,.18);

  --ease: cubic-bezier(.22,.61,.36,1);
  --t-fast: .2s;
  --t-med:  .45s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--f-body);
  color: var(--c-ink);
  background: var(--c-bg);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, picture, iframe, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: inherit; text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--c-accent); }
ul { list-style: none; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; border-radius: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--c-accent); color: #fff; padding: .75rem 1rem; z-index: 1000;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* ---------- Layout helpers ---------- */
.container {
  width: min(100% - 2rem, 1400px);
  margin-inline: auto;
}

.section { padding: var(--s-7) 0; }
.section-head { max-width: 740px; margin: 0 auto var(--s-6); text-align: center; }
.section-head .eyebrow { margin-bottom: var(--s-2); }

.eyebrow {
  font-family: var(--f-body);
  font-size: .8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--c-wood);
  font-weight: 500;
}
.lede {
  font-size: 1.05rem;
  color: var(--c-ink-soft);
  margin-top: var(--s-3);
}

h1, h2, h3 { font-family: var(--f-display); font-weight: 400; line-height: 1.1; letter-spacing: -.01em; }
h2 { font-size: clamp(2rem, 4vw + 1rem, 3.5rem); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.9);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--c-line);
  padding-top: env(safe-area-inset-top);
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px;
  padding: .75rem 0;
}
.brand picture, .brand img { display: block; height: 44px; width: auto; }

.nav-toggle {
  display: inline-flex; flex-direction: column; justify-content: center; gap: 6px;
  width: 48px; height: 48px; padding: 12px 10px;
  border-radius: var(--radius);
  background: rgba(29, 26, 52, 0.06);
}
.nav-toggle:hover { background: rgba(29, 26, 52, 0.12); }
.nav-toggle span {
  display: block; height: 2.5px; width: 100%; background: var(--c-accent);
  border-radius: 2px;
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast);
  transform-origin: center;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(8.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-8.5px) rotate(-45deg); }

.primary-nav {
  position: fixed; left: 0; right: 0;
  top: calc(64px + env(safe-area-inset-top));
  background: rgba(255,255,255,.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-line);
  transform: translateY(calc(-100% - 80px - env(safe-area-inset-top)));
  transition: transform var(--t-med) var(--ease);
  padding: var(--s-4) 0 var(--s-5);
  visibility: hidden;
}
.primary-nav.is-open { transform: translateY(0); visibility: visible; }
.primary-nav { transition: transform var(--t-med) var(--ease), visibility 0s var(--t-med); }
.primary-nav.is-open { transition: transform var(--t-med) var(--ease), visibility 0s; }
.primary-nav ul {
  display: flex; flex-direction: column; gap: var(--s-3);
  width: min(100% - 2rem, 1400px); margin-inline: auto;
}
.primary-nav a {
  display: block;
  font-family: var(--f-display);
  font-size: 1.8rem;
  padding: .25rem 0;
  border-bottom: 1px solid var(--c-line);
}

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: var(--s-5); }
.hero-media {
  width: min(100% - 2rem, 1600px);
  margin-inline: auto;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 7;
  background: #f4f0ea;
}
.hero-media picture { display: block; width: 100%; height: 100%; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-title {
  font-family: var(--f-display);
  font-size: clamp(2.25rem, 6vw + .5rem, 6rem);
  font-weight: 300;
  text-align: center;
  margin: var(--s-6) auto var(--s-5);
  max-width: 22ch;
  line-height: 1.05;
}

/* ---------- Tiles (Tafle) ---------- */
.tiles {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3);
}
.tile {
  display: block; width: 100%; aspect-ratio: 1; padding: 0;
  border-radius: var(--radius);
  overflow: hidden; position: relative;
  background: #f4f0ea;
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.tile img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-med) var(--ease); }
.tile:hover, .tile:focus-visible { box-shadow: var(--shadow); transform: translateY(-2px); }
.tile:hover img { transform: scale(1.05); }

/* ---------- Quote sections ---------- */
.section-quote { padding: var(--s-6) 0; }
.quote {
  font-family: var(--f-display);
  font-size: clamp(1.4rem, 2.6vw + .6rem, 2.8rem);
  font-weight: 300;
  line-height: 1.25;
  max-width: 28ch;
  margin: 0;
}
.quote-right { margin-left: auto; text-align: right; }
.quote-accent { display: block; color: var(--c-wood); margin-top: var(--s-3); font-style: italic; font-size: .9em; }

/* ---------- Gallery (realizacje) ---------- */
.gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
}
.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #f4f0ea;
}
.gallery-item picture { display: block; }
.gallery-item img { display: block; width: 100%; height: auto; transition: transform .8s var(--ease); }
.gallery-item:hover img { transform: scale(1.03); }

/* ---------- Contact ---------- */
.section-contact { background: #faf7f1; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
  align-items: start;
}
.contact-info h2 { margin: var(--s-2) 0 var(--s-5); }
.contact-list { display: grid; gap: var(--s-4); }
.contact-list li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  align-items: baseline;
  gap: var(--s-3);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--c-line);
}
.contact-label {
  font-size: .75rem; letter-spacing: .2em; text-transform: uppercase;
  color: var(--c-ink-soft);
}
.contact-list a, .contact-list address {
  font-family: var(--f-display);
  font-size: 1.4rem;
  font-style: normal;
  color: var(--c-ink);
}
.contact-list a:hover { color: var(--c-wood); }

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow);
}
.contact-map iframe { width: 100%; height: 100%; border: 0; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-accent);
  color: #cfcadf;
  padding: var(--s-4) 0;
  text-align: center;
  font-size: .85rem;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15,12,30,.95);
  display: grid; place-items: center;
  padding: var(--s-3);
  animation: fade var(--t-fast) var(--ease);
}
.lightbox[hidden] { display: none; }
.lb-stage {
  max-width: min(96vw, 1100px);
  max-height: 88vh;
  display: grid; gap: var(--s-3); place-items: center;
}
.lb-stage img {
  max-width: 100%;
  max-height: 80vh;
  width: auto; height: auto;
  border-radius: var(--radius);
  background: #222;
}
.lb-stage figcaption {
  color: #cfcadf; font-size: .85rem; letter-spacing: .15em; text-transform: uppercase;
}
.lb-close, .lb-prev, .lb-next {
  position: absolute;
  width: 48px; height: 48px;
  display: grid; place-items: center;
  color: #fff;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  font-size: 1.5rem;
  transition: background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.lb-close { top: 1rem; right: 1rem; }
.lb-prev  { left: 1rem; top: 50%; transform: translateY(-50%); }
.lb-next  { right: 1rem; top: 50%; transform: translateY(-50%); }
.lb-close:hover, .lb-prev:hover, .lb-next:hover { background: rgba(255,255,255,.18); }
.lb-prev:hover { transform: translateY(-50%) translateX(-3px); }
.lb-next:hover { transform: translateY(-50%) translateX(3px); }

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}

/* ============================================================
   GALLERY-SPECIFIC ADDITIONS
   ============================================================ */

.gallery-hero {
  text-align: center;
  padding: var(--s-6) 0 var(--s-5);
}
.gallery-hero-title {
  font-family: var(--f-display);
  font-size: clamp(2.5rem, 6vw + 1rem, 5.5rem);
  font-weight: 300;
  line-height: 1.05;
  margin: var(--s-2) 0 var(--s-3);
}
.gallery-hero-lede {
  max-width: 56ch;
  margin: 0 auto;
}

.mosaic {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-3);
}
.mosaic-item {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: #f4f0ea;
  cursor: zoom-in;
  position: relative;
  aspect-ratio: 1 / 1;
  transition: transform var(--t-med) var(--ease), box-shadow var(--t-med) var(--ease);
}
.mosaic-item picture { display: block; width: 100%; height: 100%; }
.mosaic-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .8s var(--ease);
}
.mosaic-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.mosaic-item:hover img { transform: scale(1.04); }
.mosaic-item:focus-visible { outline-offset: 4px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5em;
  font-family: var(--f-body);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: .03em;
  padding: .9rem 1.7rem;
  border-radius: 999px;
  background: var(--c-accent);
  color: #fff;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.btn:hover { background: var(--c-wood); color: #fff; transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--c-accent);
  border: 1.5px solid var(--c-accent);
}
.btn-ghost:hover { background: var(--c-accent); color: #fff; border-color: var(--c-accent); }

.section-cta { text-align: center; margin-top: var(--s-6); }

.primary-nav .nav-home { color: var(--c-wood); }

/* Minimalist gallery header link */
.back-link {
  font-family: var(--f-body);
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-accent);
  padding: .6rem .9rem;
  border-radius: 999px;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.back-link:hover {
  background: var(--c-accent);
  color: #fff;
}

/* Gallery main: tight padding so photos breathe but not text-heavy */
.page-gallery main { padding: var(--s-5) 0 var(--s-6); }
@media (min-width: 900px) {
  .page-gallery main { padding: var(--s-6) 0 var(--s-7); }
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s-3);
}
.footer-back {
  color: #cfcadf;
  letter-spacing: .15em;
  text-transform: uppercase;
  font-size: .8rem;
  padding: .35rem .75rem;
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 999px;
}
.footer-back:hover { color: #fff; border-color: rgba(255,255,255,.35); }

/* ============================================================
   BREAKPOINTS — mobile-first
   ============================================================ */

/* >= 600px : 3 columns for tiles, mosaic 2col */
@media (min-width: 600px) {
  .tiles { grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
  .mosaic { grid-template-columns: repeat(3, 1fr); gap: var(--s-4); }
}

/* >= 900px : nav inline, gallery 2col, contact 2col */
@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .primary-nav {
    position: static; transform: none; padding: 0; border: 0; background: transparent;
    backdrop-filter: none;
  }
  .primary-nav ul {
    flex-direction: row; gap: var(--s-5); width: auto; margin: 0;
  }
  .primary-nav a {
    font-family: var(--f-body);
    font-size: .95rem;
    padding: 0;
    border: 0;
    letter-spacing: .05em;
    text-transform: uppercase;
    font-weight: 500;
  }
  .primary-nav a::after {
    content: ""; display: block; height: 1px; width: 0; background: var(--c-accent);
    transition: width var(--t-med) var(--ease); margin-top: 2px;
  }
  .primary-nav a:hover::after { width: 100%; }

  .tiles { grid-template-columns: repeat(6, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); gap: var(--s-4); }
  .gallery-item--full { grid-column: 1 / -1; }
  .gallery-item--full + .gallery-item--full { margin-top: calc(var(--s-4) * -1 + 4px); }

  .contact-grid { grid-template-columns: 1fr 1.1fr; gap: var(--s-7); }
  .contact-map { aspect-ratio: 1 / 1; }
}

/* >= 1100px : mosaic 4col */
@media (min-width: 1100px) {
  .mosaic { grid-template-columns: repeat(4, 1fr); }
}

/* >= 1200px : roomier spacing */
@media (min-width: 1200px) {
  .section { padding: var(--s-8) 0; }
  .gallery { gap: var(--s-5); }
  .tiles { gap: var(--s-4); }
}