/* ==========================================================================
   ARCHISTRUCT — Structure & Void
   Prototyp strony firmy budowlanej. Autorski CSS, bez frameworków.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokeny
   -------------------------------------------------------------------------- */
:root {
  /* Kolory — architektoniczne neutralne z celowymi akcentami */
  --navy: #000d21;
  --navy-container: #002347;
  --navy-soft: #2c486d;

  --terracotta: #fc8f34;
  --terracotta-deep: #944a00;

  --graphite: #0d0d0d;
  --graphite-soft: #232323;

  --ink: #191c1d;
  --ink-variant: #43474e;
  --ink-muted: #74777f;

  --surface: #f8f9fa;
  --surface-low: #f3f4f5;
  --surface-mid: #edeeef;
  --white: #ffffff;

  --line: #e1e3e4;
  --line-strong: #c4c6cf;

  /* Typografia */
  --font-display: "Montserrat", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Przestrzeń — jednostka bazowa 8 px */
  --u: 8px;
  --header-h: 84px; /* wysokość stałego nagłówka; rezerwują ją .hero i .page-offset */
  --container: 1440px;
  --gutter: 24px;
  --margin: 64px;
  --section-gap: 120px;

  /* Ruch */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.45s;
}

@media (max-width: 900px) {
  :root {
    --margin: 20px;
    --section-gap: 72px;
    --gutter: 16px;
  }
}

/* --------------------------------------------------------------------------
   2. Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

img { height: auto; }

h1, h2, h3, h4, h5, h6, p, figure, blockquote { margin: 0; }

ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: inherit; text-decoration: none; }

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
  border-radius: 0; /* język kształtu: wyłącznie kąty proste */
}

table { border-collapse: collapse; width: 100%; }

:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* --------------------------------------------------------------------------
   3. Typografia
   -------------------------------------------------------------------------- */
.display {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.75rem, 6.2vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 3.8vw, 3rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.headline-md {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.25rem, 1.7vw, 1.5rem);
  line-height: 1.33;
  color: var(--navy);
}

.label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.33;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--terracotta-deep);
}

.label--muted { color: var(--ink-muted); }
.label--light { color: rgba(255, 255, 255, 0.62); }

.mono {
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.38;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.lead {
  font-size: clamp(1.0625rem, 1.3vw, 1.125rem);
  line-height: 1.6;
  color: var(--ink-variant);
}

.body { line-height: 1.65; color: var(--ink-variant); }

.text-light { color: rgba(255, 255, 255, 0.74); }
.text-white { color: var(--white); }

/* Akcent w nagłówku */
.accent { color: var(--terracotta); }

/* --------------------------------------------------------------------------
   4. Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--margin);
}

.section { padding-block: var(--section-gap); }
.section--tight { padding-block: calc(var(--section-gap) * 0.6); }
.section--surface { background: var(--surface); }
.section--dark { background: var(--navy); color: var(--white); }
.section--dark .headline,
.section--dark .headline-md,
.section--dark .display { color: var(--white); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
}

/* Nagłówek sekcji — asymetryczny, 5 kolumn tytuł / 6 opis */
.section-head {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
  align-items: end;
  margin-bottom: calc(var(--u) * 8);
}
.section-head__title { grid-column: 1 / span 6; }
.section-head__aside { grid-column: 8 / span 5; }

@media (max-width: 900px) {
  .section-head { gap: calc(var(--u) * 3); }
  .section-head__title,
  .section-head__aside { grid-column: 1 / -1; }
}

/* Cienka linia techniczna — separator sekcji */
.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}

.stack > * + * { margin-top: calc(var(--u) * 2); }
.stack-lg > * + * { margin-top: calc(var(--u) * 4); }

/* --------------------------------------------------------------------------
   5. Przyciski
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--u) * 1.5);
  padding: 18px 34px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.btn svg { flex-shrink: 0; transition: transform var(--dur) var(--ease); }
.btn:hover svg { transform: translateX(5px); }

.btn--primary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn--primary:hover { background: var(--navy-container); border-color: var(--navy-container); }

.btn--ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn--ghost:hover { background: var(--navy); color: var(--white); }

.btn--ghost-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.45);
}
.btn--ghost-light:hover { background: var(--white); color: var(--navy); border-color: var(--white); }

.btn--accent {
  background: var(--terracotta);
  color: var(--graphite);
  border-color: var(--terracotta);
}
.btn--accent:hover { background: var(--terracotta-deep); color: var(--white); border-color: var(--terracotta-deep); }

/* Link tekstowy ze strzałką */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--u));
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line-strong);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.link-arrow svg { transition: transform var(--dur) var(--ease); }
.link-arrow:hover { color: var(--terracotta-deep); border-color: var(--terracotta); }
.link-arrow:hover svg { transform: translateX(5px); }

/* --------------------------------------------------------------------------
   6. Nagłówek strony
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--u) * 4);
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--navy);
}
.brand svg { color: var(--terracotta); }

.nav { display: flex; align-items: center; gap: calc(var(--u) * 4); }

.nav a {
  position: relative;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-variant);
  padding-block: 6px;
  transition: color var(--dur) var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--terracotta);
  transition: width var(--dur) var(--ease);
}
.nav a:hover { color: var(--navy); }
.nav a:hover::after,
.nav a[aria-current="page"]::after { width: 100%; }
.nav a[aria-current="page"] { color: var(--navy); font-weight: 600; }

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--navy);
  cursor: pointer;
}

/* Wariant nakładkowy — nad ciemnym hero */
body.has-overlay-header .site-header {
  background: transparent;
  border-bottom-color: transparent;
}
body.has-overlay-header .site-header .brand,
body.has-overlay-header .site-header .nav a { color: rgba(255, 255, 255, 0.86); }
body.has-overlay-header .site-header .nav a:hover,
body.has-overlay-header .site-header .nav a[aria-current="page"] { color: var(--white); }
body.has-overlay-header .nav-toggle { color: var(--white); border-color: rgba(255, 255, 255, 0.4); }

body.has-overlay-header .site-header.is-stuck {
  background: var(--white);
  border-bottom-color: var(--line);
}
body.has-overlay-header .site-header.is-stuck .brand { color: var(--navy); }
body.has-overlay-header .site-header.is-stuck .nav a { color: var(--ink-variant); }
body.has-overlay-header .site-header.is-stuck .nav a:hover,
body.has-overlay-header .site-header.is-stuck .nav a[aria-current="page"] { color: var(--navy); }
body.has-overlay-header .site-header.is-stuck .nav-toggle { color: var(--navy); border-color: var(--line-strong); }

/* Odsunięcie treści spod nagłówka (poza stronami z hero na całą wysokość) */
.page-offset { padding-top: var(--header-h); }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }

  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    padding: calc(var(--u) * 2) var(--margin) calc(var(--u) * 4);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
  }
  .nav.is-open { opacity: 1; visibility: visible; transform: none; }

  /* :not(.btn) — inaczej reguła zjadłaby kolor i obramowanie przycisku CTA */
  .nav a:not(.btn) {
    color: var(--ink-variant) !important;
    font-size: 1rem;
    padding-block: 16px;
    border-bottom: 1px solid var(--line);
  }
  .nav a::after { display: none; }
  .nav .btn { margin-top: calc(var(--u) * 3); justify-content: center; }
}

/* --------------------------------------------------------------------------
   7. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 92vh;
  min-height: 92svh; /* stabilne przy chowającym się pasku przeglądarki */
  display: flex;
  align-items: flex-end;
  /* Nagłówek jest position:fixed, więc jego wysokość musi tu zostać
     zarezerwowana. Bez tego treść wyrównana do dołu wjeżdża pod nawigację,
     gdy tylko jest wyższa niż dostępna przestrzeń. */
  padding-top: calc(var(--header-h) + var(--u) * 5);
  padding-bottom: calc(var(--u) * 12);
  background: var(--navy);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
}
.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(0, 13, 33, 0.72) 0%,
    rgba(0, 13, 33, 0.35) 42%,
    rgba(0, 13, 33, 0.88) 100%
  );
}

.hero__inner { position: relative; width: 100%; }
.hero__title { max-width: 15ch; color: var(--white); }
.hero__lead { max-width: 52ch; margin-top: calc(var(--u) * 3); }
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 2);
  margin-top: calc(var(--u) * 5);
}

/* Pasek metryk pod hero */
.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gutter);
  margin-top: calc(var(--u) * 6);
  padding-top: calc(var(--u) * 4);
  border-top: 1px solid rgba(255, 255, 255, 0.22);
}
.hero__meta div { color: rgba(255, 255, 255, 0.74); }
.hero__meta strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  line-height: 1;
  color: var(--white);
  margin-bottom: 6px;
}

@media (max-width: 700px) {
  .hero {
    min-height: 88vh;
    min-height: 88svh;
    padding-top: calc(var(--header-h) + var(--u) * 4);
  }
  /* Na wąskim ekranie metryki czytają się lepiej jako jednowierszowe pary
     liczba + opis niż jako trzy wysokie bloki. */
  .hero__meta { grid-template-columns: 1fr; gap: calc(var(--u) * 1.5); }
  .hero__meta div { display: flex; align-items: baseline; gap: 10px; }
  .hero__meta strong { font-size: 1.5rem; margin-bottom: 0; }
}

/* Niskie ekrany laptopów — inaczej sam hero jest wyższy niż okno */
@media (min-width: 901px) and (max-height: 800px) {
  .hero { padding-bottom: calc(var(--u) * 7); }
  .hero__title { font-size: clamp(2.5rem, 4.4vw, 3.5rem); }
  .hero__lead { margin-top: calc(var(--u) * 2); }
  .hero__actions { margin-top: calc(var(--u) * 3.5); }
  .hero__meta { margin-top: calc(var(--u) * 4); padding-top: calc(var(--u) * 3); }
  .hero__meta strong { font-size: 1.875rem; }
}

/* Hero wewnętrznych podstron */
/* Uwaga: strony wewnętrzne dodają .page-offset na <main>, który rezerwuje
   miejsce pod stały nagłówek — dlatego tutaj wystarczy zwykły oddech. */
.page-hero {
  padding-block: calc(var(--u) * 10) calc(var(--u) * 12);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.page-hero__title { max-width: 18ch; margin-top: calc(var(--u) * 2); }
.page-hero__lead { max-width: 56ch; margin-top: calc(var(--u) * 3); }

/* --------------------------------------------------------------------------
   8. Karty i siatki treści
   -------------------------------------------------------------------------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.card {
  background: var(--white);
  padding: calc(var(--u) * 5);
  transition: background var(--dur) var(--ease);
}
.card:hover { background: var(--surface); }
.card__icon { color: var(--terracotta-deep); margin-bottom: calc(var(--u) * 3); }
.card__title { margin-bottom: calc(var(--u) * 1.5); transition: color var(--dur) var(--ease); }
.card:hover .card__title { color: var(--terracotta-deep); }
.card__text { font-size: 0.9375rem; line-height: 1.6; color: var(--ink-variant); }

/* Numerowane kroki procesu */
.steps { border-top: 1px solid var(--line); }

.step {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--gutter);
  padding-block: calc(var(--u) * 5);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}
.step:hover { background: var(--surface); }
.step__num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--line-strong);
  letter-spacing: -0.01em;
}
.step:hover .step__num { color: var(--terracotta); }
.step__body { max-width: 68ch; }
.step__title { margin-bottom: calc(var(--u) * 1.5); }

@media (max-width: 700px) {
  .step { grid-template-columns: 1fr; gap: calc(var(--u) * 1.5); }
}

/* Blok obraz + tekst */
.split {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: calc(var(--gutter) * 2);
  align-items: center;
}
.split__media { grid-column: 1 / span 7; }
.split__body { grid-column: 8 / span 5; }
.split--reverse .split__media { grid-column: 6 / span 7; grid-row: 1; }
.split--reverse .split__body { grid-column: 1 / span 4; grid-row: 1; }
/* Wyrównanie do góry — dla par, w których kolumny mają różną wysokość
   (np. formularz obok panelu z danymi kontaktowymi). */
.split--top { align-items: start; }

@media (max-width: 900px) {
  .split { gap: calc(var(--u) * 4); }
  .split__media,
  .split__body,
  .split--reverse .split__media,
  .split--reverse .split__body { grid-column: 1 / -1; grid-row: auto; }
}

/* Ramka obrazu — zoom przy najechaniu */
.frame { overflow: hidden; background: var(--surface-mid); }
.frame img { width: 100%; transition: transform 0.7s var(--ease); }
a:hover .frame img,
.frame:hover img { transform: scale(1.03); }

/* --------------------------------------------------------------------------
   9. Realizacje
   -------------------------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--u) * 1.5);
  margin-bottom: calc(var(--u) * 6);
}
.filter {
  padding: 11px 22px;
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--ink-variant);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.filter:hover { border-color: var(--navy); color: var(--navy); }
.filter[aria-pressed="true"] {
  background: var(--navy);
  border-color: var(--navy);
  color: var(--white);
}

.projects { display: grid; gap: calc(var(--u) * 9); }

.project {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: calc(var(--gutter) * 2);
  align-items: center;
}
.project__media { grid-column: 1 / span 7; }
.project__body { grid-column: 8 / span 5; }
.project:nth-child(even) .project__media { grid-column: 6 / span 7; grid-row: 1; }
.project:nth-child(even) .project__body { grid-column: 1 / span 4; grid-row: 1; }

.project[hidden] { display: none; }

.project__title { margin: calc(var(--u) * 1.5) 0 calc(var(--u) * 2); }
.project__specs {
  margin-top: calc(var(--u) * 3);
  border-top: 1px solid var(--line);
}
.project__specs div {
  display: flex;
  justify-content: space-between;
  gap: var(--u);
  padding-block: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 0.875rem;
}
.project__specs dt, .project__specs span:first-child { color: var(--ink-muted); }
.project__specs span:last-child { color: var(--ink); font-weight: 500; text-align: right; }

@media (max-width: 900px) {
  .project { gap: calc(var(--u) * 3); }
  .project__media,
  .project__body,
  .project:nth-child(even) .project__media,
  .project:nth-child(even) .project__body { grid-column: 1 / -1; grid-row: auto; }
}

/* --------------------------------------------------------------------------
   10. Tabela specyfikacji
   -------------------------------------------------------------------------- */
.spec-table { border: 1px solid var(--line); background: var(--white); }
.spec-table th,
.spec-table td {
  padding: calc(var(--u) * 2.5) calc(var(--u) * 3);
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: 0.9375rem;
  vertical-align: top;
}
.spec-table thead th {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: var(--surface);
}
.spec-table tbody th { font-weight: 600; color: var(--navy); width: 34%; }
.spec-table td:last-child { color: var(--terracotta-deep); font-weight: 600; }
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }

.table-scroll { overflow-x: auto; }
@media (max-width: 700px) {
  .spec-table { min-width: 560px; }
}

/* --------------------------------------------------------------------------
   11. Akordeon
   -------------------------------------------------------------------------- */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--gutter);
  width: 100%;
  padding: calc(var(--u) * 3.5) 0;
  background: transparent;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--navy);
  transition: color var(--dur) var(--ease);
}
.accordion__trigger:hover { color: var(--terracotta-deep); }

.accordion__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
}
.accordion__icon::before,
.accordion__icon::after {
  content: "";
  position: absolute;
  inset: 50% 0 auto 0;
  height: 1.5px;
  background: currentColor;
  transition: transform var(--dur) var(--ease);
}
.accordion__icon::after { transform: rotate(90deg); }
.accordion__trigger[aria-expanded="true"] .accordion__icon::before { transform: rotate(45deg); }
.accordion__trigger[aria-expanded="true"] .accordion__icon::after { transform: rotate(135deg); }

.accordion__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease);
}
.accordion__panel > div { overflow: hidden; }
.accordion__item.is-open .accordion__panel { grid-template-rows: 1fr; }
.accordion__panel p {
  padding-bottom: calc(var(--u) * 4);
  max-width: 74ch;
  line-height: 1.65;
  color: var(--ink-variant);
}

/* --------------------------------------------------------------------------
   12. Formularz
   -------------------------------------------------------------------------- */
.form { display: grid; gap: calc(var(--u) * 4); }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: calc(var(--u) * 4); }
@media (max-width: 700px) { .form__row { grid-template-columns: 1fr; } }

.field { display: grid; gap: 10px; }
.field > label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 10px 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  font-size: 1rem;
  transition: border-color var(--dur) var(--ease);
}
.field textarea { resize: vertical; min-height: 128px; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-bottom-color: var(--navy);
}
.field input::placeholder,
.field textarea::placeholder { color: var(--line-strong); }

.form__note {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

.form__status {
  display: none;
  padding: calc(var(--u) * 2.5) calc(var(--u) * 3);
  border: 1px solid var(--terracotta);
  background: rgba(252, 143, 52, 0.08);
  font-size: 0.9375rem;
  color: var(--graphite);
}
.form__status.is-visible { display: block; }

/* --------------------------------------------------------------------------
   13. Zespół, nagrody, liczby
   -------------------------------------------------------------------------- */
.team { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 900px) { .team { grid-template-columns: 1fr; } }

.team__item { background: var(--white); padding: calc(var(--u) * 5); }
.team__role { margin-bottom: calc(var(--u) * 2); }
.team__name { margin-bottom: calc(var(--u) * 2); }

.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--gutter); }
@media (max-width: 900px) { .badges { grid-template-columns: repeat(2, 1fr); } }

.badge {
  display: grid;
  gap: calc(var(--u) * 1.5);
  padding: calc(var(--u) * 4);
  border: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}
.badge:hover { border-color: var(--terracotta); }
.badge svg { color: var(--terracotta-deep); }
.badge strong { font-family: var(--font-display); font-size: 0.9375rem; color: var(--navy); }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gutter); }
@media (max-width: 700px) { .stats { grid-template-columns: 1fr; } }
.stat { padding-top: calc(var(--u) * 3); border-top: 1px solid var(--line-strong); }
.stat strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1;
  color: var(--navy);
  letter-spacing: -0.02em;
}
.stat span { display: block; margin-top: calc(var(--u) * 1.5); font-size: 0.9375rem; color: var(--ink-variant); }

/* --------------------------------------------------------------------------
   14. CTA
   -------------------------------------------------------------------------- */
.cta { background: var(--navy); color: var(--white); }
.cta__inner {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--gutter);
  align-items: center;
  padding-block: var(--section-gap);
}
.cta__body { grid-column: 1 / span 7; }
.cta__action { grid-column: 9 / span 4; justify-self: end; }
@media (max-width: 900px) {
  .cta__body, .cta__action { grid-column: 1 / -1; justify-self: start; }
  .cta__action { margin-top: calc(var(--u) * 4); }
}
.cta__title { color: var(--white); max-width: 20ch; }
.cta__lead { max-width: 54ch; margin-top: calc(var(--u) * 2); }

/* --------------------------------------------------------------------------
   15. Stopka
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--graphite);
  color: rgba(255, 255, 255, 0.66);
  padding-block: calc(var(--u) * 9) calc(var(--u) * 5);
  font-size: 0.875rem;
}
.site-footer a { transition: color var(--dur) var(--ease); }
.site-footer a:hover { color: var(--terracotta); }

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: calc(var(--u) * 5);
  padding-bottom: calc(var(--u) * 6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}
@media (max-width: 900px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer__grid { grid-template-columns: 1fr; } }

.footer__grid .brand { color: var(--white); margin-bottom: calc(var(--u) * 2); }
.footer__col h3 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.42);
  margin-bottom: calc(var(--u) * 2);
}
.footer__col li + li { margin-top: 10px; }

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: calc(var(--u) * 2);
  padding-top: calc(var(--u) * 4);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

/* --------------------------------------------------------------------------
   16. Plakietka prototypu (przypięta)
   -------------------------------------------------------------------------- */
.proto {
  position: fixed;
  left: 20px;
  bottom: 20px;
  z-index: 200;
  max-width: min(360px, calc(100vw - 40px));
  background: var(--graphite);
  color: var(--white);
  border-left: 3px solid var(--terracotta);
  font-family: var(--font-body);
}

.proto__toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  background: transparent;
  border: 0;
  color: inherit;
  cursor: pointer;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
}

.proto__dot {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  background: var(--terracotta);
  animation: proto-pulse 2.4s var(--ease) infinite;
}

@keyframes proto-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.28; }
}

.proto__chev {
  margin-left: auto;
  transition: transform var(--dur) var(--ease);
}
.proto__toggle[aria-expanded="true"] .proto__chev { transform: rotate(180deg); }

.proto__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease);
}
.proto__panel > div { overflow: hidden; }
.proto.is-open .proto__panel { grid-template-rows: 1fr; }

.proto__inner {
  padding: 0 16px 16px;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.74);
}
.proto__inner p + p { margin-top: 10px; }
.proto__inner a {
  color: var(--terracotta);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 560px) {
  .proto { left: 12px; right: 12px; bottom: 12px; max-width: none; }
}

/* --------------------------------------------------------------------------
   17. Ujawnianie przy przewijaniu
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* --------------------------------------------------------------------------
   18. Pomocnicze
   -------------------------------------------------------------------------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--margin);
  z-index: 300;
  padding: 12px 20px;
  background: var(--navy);
  color: var(--white);
  font-size: 0.875rem;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 12px; }