/* ==========================================================================
   KONTUR STUDIO — pracownia architektoniczna
   Autor: Daniel Prajsnar
   1. Zmienne  2. Reset  3. Typografia  4. Layout  5. Nawigacja
   6. Sekcje   7. Projekty  8. Formularz  9. Stopka  10. RWD
   ========================================================================== */

/* 1. ZMIENNE ------------------------------------------------------------- */
:root {
  --papier:   #fbfaf8;
  --papier-2: #f2f0eb;
  --atrament: #14140f;
  --szary:    #6f6d66;
  --linia:    #e0ddd5;
  --akcent:   #b4553c;

  --naglowki: "Archivo", "Arial Narrow", sans-serif;
  --tekst:    "Inter", -apple-system, "Segoe UI", sans-serif;

  --max:    1280px;
  --sekcja: clamp(4.5rem, 10vw, 8.5rem);
  --ease:   cubic-bezier(.19, 1, .22, 1);
}

/* 2. RESET --------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--papier);
  color: var(--atrament);
  font-family: var(--tekst);
  font-size: 1rem;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--akcent); outline-offset: 3px; }
::selection { background: var(--atrament); color: var(--papier); }

/* 3. TYPOGRAFIA ---------------------------------------------------------- */
h1, h2, h3, h4 { font-family: var(--naglowki); font-weight: 600; line-height: 1.04; letter-spacing: -.025em; }

.t-mega { font-size: clamp(2.6rem, 8vw, 6.5rem); }
.t-duzy { font-size: clamp(2rem, 4.4vw, 3.4rem); }
.t-sred { font-size: clamp(1.35rem, 2.3vw, 1.85rem); letter-spacing: -.015em; }
.t-maly { font-size: 1.06rem; font-weight: 600; letter-spacing: -.01em; }

.numer {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  font-family: var(--naglowki);
  font-size: .74rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--szary);
}
.numer::after { content: ""; width: 42px; height: 1px; background: var(--linia); }

.lead { font-size: clamp(1.05rem, 1.6vw, 1.28rem); line-height: 1.55; max-width: 46ch; }
.mut  { color: var(--szary); }
.mala { font-size: .88rem; }

/* 4. LAYOUT -------------------------------------------------------------- */
.kontener { width: min(100% - 2.6rem, var(--max)); margin-inline: auto; }
.szeroki  { width: min(100% - 1.6rem, 1600px); margin-inline: auto; }
.sekcja   { padding-block: var(--sekcja); }
.linia-gora { border-top: 1px solid var(--linia); }

.naglowek { display: grid; gap: 1.3rem; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); max-width: 52ch; }
.naglowek--rozstrzelony {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem 4rem;
  max-width: none;
  align-items: end;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  padding: 1rem 1.9rem;
  font-size: .82rem;
  font-weight: 500;
  letter-spacing: .04em;
  border: 1px solid var(--atrament);
  background: var(--atrament);
  color: var(--papier);
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s;
}
.btn:hover { background: transparent; color: var(--atrament); }
.btn--pusty { background: transparent; color: var(--atrament); }
.btn--pusty:hover { background: var(--atrament); color: var(--papier); }
.btn svg { width: 15px; height: 15px; stroke: currentColor; fill: none; stroke-width: 1.8; }

.link-strzalka {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 500;
  font-size: .92rem;
  border-bottom: 1px solid var(--atrament);
  padding-bottom: .2rem;
  transition: gap .3s var(--ease), color .3s;
}
.link-strzalka:hover { gap: 1.1rem; color: var(--akcent); border-color: var(--akcent); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--ease), transform 1s var(--ease); }
.reveal.widoczny { opacity: 1; transform: none; }
.reveal[data-op="1"] { transition-delay: .1s; }
.reveal[data-op="2"] { transition-delay: .2s; }
.reveal[data-op="3"] { transition-delay: .3s; }

/* 5. NAWIGACJA ----------------------------------------------------------- */
.pasek {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 90;
  padding-block: 1.5rem;
  transition: background .4s var(--ease), padding .4s var(--ease), border-color .4s;
  border-bottom: 1px solid transparent;
}
.pasek.przyklejony {
  background: rgba(251,250,248,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding-block: .95rem;
  border-bottom-color: var(--linia);
}
.pasek__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }

.logo { display: flex; align-items: center; gap: .55rem; font-family: var(--naglowki); font-weight: 600; font-size: 1.02rem; letter-spacing: .2em; text-transform: uppercase; }
.logo__znak { width: 20px; height: 20px; border: 2px solid var(--atrament); position: relative; }
.logo__znak::after { content: ""; position: absolute; inset: 4px 4px auto auto; width: 8px; height: 8px; background: var(--akcent); }

.menu-gl { display: flex; align-items: center; gap: clamp(1.4rem, 2.6vw, 2.6rem); }
.menu-gl a { position: relative; font-size: .88rem; font-weight: 500; padding-block: .3rem; }
.menu-gl a::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--atrament);
  transform: scaleX(0); transform-origin: right;
  transition: transform .4s var(--ease);
}
.menu-gl a:hover::after, .menu-gl a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.menu-gl .btn { padding: .7rem 1.3rem; font-size: .78rem; }
.menu-gl .btn::after { display: none; }

.burger { display: none; width: 40px; height: 40px; border: 1px solid var(--linia); background: none; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 10px; width: 18px; height: 1.5px; background: var(--atrament); transition: transform .35s var(--ease), opacity .25s; }
.burger span:nth-child(1) { top: 15px; }
.burger span:nth-child(2) { top: 20px; }
.burger span:nth-child(3) { top: 25px; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 6. SEKCJE -------------------------------------------------------------- */
/* --- hero --- */
.hero { padding: clamp(9rem, 17vw, 14rem) 0 0; }
.hero__gora { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(2rem, 5vw, 4rem); align-items: end; padding-bottom: clamp(2.5rem, 5vw, 4rem); }
.hero__tytul { max-width: 14ch; }
.hero__tytul .akcent { color: var(--akcent); }
.hero__bok { display: grid; gap: 1.6rem; justify-items: start; }
.hero__foto { position: relative; overflow: hidden; }
.hero__foto img { width: 100%; height: clamp(320px, 62vh, 640px); object-fit: cover; }

.metryka { display: flex; flex-wrap: wrap; gap: 2.6rem; padding-block: 2.2rem; border-block: 1px solid var(--linia); }
.metryka div { display: grid; gap: .2rem; }
.metryka b { font-family: var(--naglowki); font-size: clamp(1.8rem, 3.4vw, 2.7rem); font-weight: 600; line-height: 1; }
.metryka span { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--szary); }

/* --- projekty --- */
.filtry { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2.8rem; }
.filtry button {
  padding: .6rem 1.25rem;
  border: 1px solid var(--linia);
  background: none;
  cursor: pointer;
  font-size: .84rem;
  border-radius: 999px;
  transition: all .3s var(--ease);
}
.filtry button:hover { border-color: var(--atrament); }
.filtry button[aria-pressed="true"] { background: var(--atrament); color: var(--papier); border-color: var(--atrament); }

.siatka-projektow { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1.6rem, 4vw, 3.4rem) clamp(1.4rem, 3vw, 2.6rem); }
.projekt { display: grid; gap: 1.1rem; align-content: start; }
.projekt.ukryty { display: none; }
.projekt--szeroki { grid-column: 1 / -1; }
.projekt__foto { overflow: hidden; background: var(--papier-2); }
.projekt__foto img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 1.2s var(--ease), filter .6s; }
.projekt--szeroki .projekt__foto img { aspect-ratio: 21 / 9; }
.projekt:hover .projekt__foto img { transform: scale(1.045); }
.projekt__meta { display: flex; justify-content: space-between; gap: 1rem; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--szary); }
.projekt__tytul { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; }
.projekt__tytul span:last-child { font-size: 1.2rem; transition: transform .4s var(--ease); }
.projekt:hover .projekt__tytul span:last-child { transform: translateX(6px); }
.projekt p { color: var(--szary); font-size: .95rem; max-width: 48ch; }

/* --- proces --- */
.kroki { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--linia); }
.krok { padding: 2.2rem 1.6rem 2.4rem; border-right: 1px solid var(--linia); display: grid; gap: .9rem; align-content: start; }
.krok:last-child { border-right: 0; }
.krok b { font-family: var(--naglowki); font-size: .78rem; letter-spacing: .18em; color: var(--akcent); }
.krok p { color: var(--szary); font-size: .93rem; }

/* --- duo --- */
.duo { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5.5rem); align-items: center; }
.duo--gora { align-items: start; }
.duo__tresc { display: grid; gap: 1.4rem; align-content: start; }
.duo__foto img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; }
.duo__foto--niskie img { aspect-ratio: 4 / 3; }

/* --- lista usług --- */
.uslugi { display: grid; border-top: 1px solid var(--linia); }
.usluga {
  display: grid;
  grid-template-columns: 4rem 1fr 1.2fr auto;
  gap: 1.5rem;
  align-items: start;
  padding: 1.9rem .4rem;
  border-bottom: 1px solid var(--linia);
  transition: background .35s var(--ease), padding-left .35s var(--ease);
}
.usluga:hover { background: var(--papier-2); padding-left: 1rem; }
.usluga__nr { font-family: var(--naglowki); font-size: .8rem; color: var(--szary); padding-top: .3rem; }
.usluga p { color: var(--szary); font-size: .95rem; }
.usluga__cena { font-family: var(--naglowki); font-size: .95rem; white-space: nowrap; padding-top: .15rem; }

/* --- zespół --- */
.zespol { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2rem; }
.osoba { display: grid; gap: .8rem; align-content: start; }
.osoba__inicjaly {
  display: grid; place-items: center;
  width: 84px; height: 84px;
  border: 1px solid var(--linia);
  border-radius: 50%;
  font-family: var(--naglowki);
  font-size: 1.5rem;
  color: var(--akcent);
}
.osoba p { color: var(--szary); font-size: .93rem; }

/* --- cytat --- */
.cytat { max-width: 30ch; }
.cytat blockquote { font-family: var(--naglowki); font-size: clamp(1.4rem, 2.8vw, 2.2rem); line-height: 1.25; letter-spacing: -.02em; }
.cytat footer { margin-top: 1.4rem; font-size: .88rem; color: var(--szary); }

/* --- galeria case study --- */
.galeria-cs { display: grid; grid-template-columns: repeat(6, 1fr); gap: clamp(.8rem, 2vw, 1.4rem); }
.galeria-cs img { width: 100%; height: 100%; object-fit: cover; }
.galeria-cs > *:nth-child(1) { grid-column: span 4; }
.galeria-cs > *:nth-child(2) { grid-column: span 2; }
.galeria-cs > *:nth-child(3) { grid-column: span 2; }
.galeria-cs > *:nth-child(4) { grid-column: span 4; }
.galeria-cs figure { overflow: hidden; display: grid; gap: .6rem; }
.galeria-cs figcaption { font-size: .8rem; color: var(--szary); }

/* --- dane techniczne --- */
.dane { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--linia); border: 1px solid var(--linia); }
.dane div { background: var(--papier); padding: 1.5rem 1.3rem; display: grid; gap: .3rem; }
.dane dt { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--szary); }
.dane dd { font-family: var(--naglowki); font-size: 1.25rem; font-weight: 600; }

/* 8. FORMULARZ ----------------------------------------------------------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.pole { display: grid; gap: .5rem; }
.pole--pelne { grid-column: 1 / -1; }
.pole label { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--szary); }
.pole input, .pole select, .pole textarea {
  width: 100%;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--linia);
  padding: .85rem .2rem;
  transition: border-color .3s;
}
.pole input:focus, .pole select:focus, .pole textarea:focus { outline: none; border-bottom-color: var(--atrament); }
.pole textarea { resize: vertical; min-height: 120px; }
.pole__blad { font-size: .78rem; color: var(--akcent); min-height: 1.1em; }
.pole.blad input, .pole.blad textarea, .pole.blad select { border-bottom-color: var(--akcent); }

.zgoda { display: flex; gap: .8rem; align-items: start; font-size: .85rem; color: var(--szary); }
.zgoda input { width: 18px; height: 18px; margin-top: .2rem; accent-color: var(--akcent); flex: none; }

.komunikat { display: none; margin-top: 1.6rem; padding: 1.4rem 1.5rem; border: 1px solid var(--atrament); background: var(--papier-2); }
.komunikat.pokaz { display: block; }

.kontakt-lista { display: grid; gap: 1.6rem; }
.kontakt-lista div { display: grid; gap: .25rem; padding-bottom: 1.4rem; border-bottom: 1px solid var(--linia); }
.kontakt-lista dt { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--szary); }
.kontakt-lista dd { font-size: 1.05rem; }
.kontakt-lista a:hover { color: var(--akcent); }

/* --- FAQ --- */
.faq { display: grid; border-top: 1px solid var(--linia); }
.faq details { border-bottom: 1px solid var(--linia); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 1.5rem;
  padding: 1.5rem .2rem;
  cursor: pointer;
  font-family: var(--naglowki);
  font-size: 1.05rem;
  font-weight: 600;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; color: var(--szary); transition: transform .3s var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { padding: 0 .2rem 1.6rem; color: var(--szary); max-width: 62ch; }

/* 9. STOPKA -------------------------------------------------------------- */
.stopka { border-top: 1px solid var(--linia); padding-top: clamp(3rem, 6vw, 4.5rem); }
.stopka__grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); padding-bottom: 3rem; }
.stopka h4 { font-size: .74rem; letter-spacing: .16em; text-transform: uppercase; color: var(--szary); margin-bottom: 1.1rem; font-weight: 600; }
.stopka__lista { display: grid; gap: .55rem; font-size: .95rem; }
.stopka__lista a:hover { color: var(--akcent); }
.stopka__dol {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--linia);
  font-size: .84rem;
  color: var(--szary);
}
.stopka__dol a { border-bottom: 1px solid var(--linia); }
.stopka__dol a:hover { color: var(--akcent); border-color: var(--akcent); }

/* nagłówek podstrony */
.naglowek-strony { padding: clamp(8.5rem, 15vw, 12rem) 0 clamp(2.5rem, 5vw, 4rem); }
.okruszki { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--szary); margin-bottom: 1.4rem; }
.okruszki a:hover { color: var(--akcent); }

/* 10. RWD ---------------------------------------------------------------- */
@media (max-width: 980px) {
  .hero__gora { grid-template-columns: 1fr; align-items: start; }
  .duo { grid-template-columns: 1fr; }
  .kroki { grid-template-columns: repeat(2, 1fr); }
  .krok:nth-child(2) { border-right: 0; }
  .krok:nth-child(1), .krok:nth-child(2) { border-bottom: 1px solid var(--linia); }
  .naglowek--rozstrzelony { grid-template-columns: 1fr; }
  .stopka__grid { grid-template-columns: 1fr 1fr; }
  .galeria-cs { grid-template-columns: repeat(2, 1fr); }
  .galeria-cs > * { grid-column: span 1 !important; }

  .burger { display: block; z-index: 96; }
  .menu-gl {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(78vw, 320px);
    flex-direction: column;
    justify-content: center;
    align-items: start;
    gap: 1.8rem;
    padding: 2rem;
    background: var(--papier);
    border-left: 1px solid var(--linia);
    transform: translateX(100%);
    transition: transform .45s var(--ease);
    z-index: 95;
  }
  .menu-gl.otwarte { transform: none; }
  .menu-gl a { font-size: 1.15rem; }
}

@media (max-width: 640px) {
  .siatka-projektow { grid-template-columns: 1fr; }
  .usluga { grid-template-columns: 1fr; gap: .5rem; }
  .usluga__nr { padding-top: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .stopka__grid { grid-template-columns: 1fr; }
  .metryka { gap: 1.6rem 2.2rem; }
  .kroki { grid-template-columns: 1fr; }
  .krok { border-right: 0; border-bottom: 1px solid var(--linia); }
}

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