/* =============================================================
   docai-promo-site — glowny arkusz stylow
   Baseline: flexbox, grid, custom properties, clamp(), gap,
   wlasciwosci logiczne. Bez zagniezdzania CSS, :has(),
   container queries, @layer. Zero JS. Patrz CLAUDE.md.
   ============================================================= */

/* ---------- Zmienne (motyw) ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fb;
  --color-surface: #ffffff;
  --color-fg: #131720;
  --color-muted: #586072;
  --color-border: #e3e8f0;
  --color-accent: #2563eb;
  --color-accent-ink: #1e40af;
  --color-ink: #0b1220;
  --color-ink-2: #15233f;
  --color-on-dark: #eef2f8;
  --color-on-dark-muted: #9fb0c9;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --content-max: 72rem;
  --measure: 46rem;
  --measure-wide: 52rem;

  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;

  --radius: 14px;
  --radius-sm: 9px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.05);
  --shadow: 0 10px 30px -12px rgba(16, 24, 40, 0.22);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

h1, h2, h3 {
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

a { color: var(--color-accent); }

ul, ol { margin: 0; padding: 0; }

/* ---------- Dostepnosc ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 100;
}
.skip-link:focus {
  left: 1rem;
  top: 0.5rem;
  position: fixed;
  display: inline-block;
  padding: 0.6rem 1rem;
  background: var(--color-fg);
  color: #fff;
  border-radius: var(--radius-sm);
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Ikony ---------- */
.icon {
  width: 1.5rem;
  height: 1.5rem;
  display: inline-block;
  vertical-align: middle;
  flex: none;
}

/* ---------- Kontener / sekcje ---------- */
.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.measure { max-width: var(--measure); }
.measure-wide { max-width: var(--measure-wide); }

.section { padding-block: clamp(3rem, 6vw, 5.5rem); }
.section--alt { background: var(--color-bg-alt); }

/* offset pod sticky header dla kotwic */
section[id] { scroll-margin-top: 4.5rem; }

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-muted);            /* bezpieczny domyslny kolor na jasnym tle */
}
.eyebrow--accent { color: var(--color-accent); }
.eyebrow--on-dark { color: var(--color-on-dark-muted); }  /* wariant na ciemne tlo (hero) */

.note {
  margin: var(--space-md) 0 0;
  max-width: var(--measure-wide);
  font-size: 0.88rem;
  color: var(--color-muted);
}

.section__title {
  margin: 0 0 0.6rem;
  font-size: clamp(1.55rem, 1.1rem + 1.8vw, 2.35rem);
  font-weight: 700;
}

.section__lead {
  margin: 0 0 var(--space-lg);
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.2rem);
  color: var(--color-muted);
}

/* ---------- Przyciski ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.2em;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font: inherit;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.05s ease;
}
.btn:active { transform: translateY(1px); }
.btn .icon { width: 1.15em; height: 1.15em; }

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}
.btn--primary:hover { background: var(--color-accent-ink); }

.btn--ghost {
  background: transparent;
  color: var(--color-on-dark);
  border-color: rgba(255, 255, 255, 0.32);
}
.btn--ghost:hover { background: rgba(255, 255, 255, 0.1); }

.btn--sm { padding: 0.5em 0.95em; font-size: 0.92rem; }
.btn--lg { padding: 0.85em 1.5em; font-size: 1.05rem; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space);
}
.actions--center { justify-content: center; }

/* ---------- Header / nawigacja ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: saturate(1.1) blur(6px);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-block: 0.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--color-fg);
  text-decoration: none;
}
.brand__mark { display: inline-flex; color: var(--color-accent); }
.brand__mark .icon { width: 1.45rem; height: 1.45rem; }

.site-nav { margin-inline: auto; }
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  list-style: none;
}
.site-nav__list a {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav__list a:hover { color: var(--color-fg); }

/* ---------- Hero ---------- */
.hero {
  color: var(--color-on-dark);
  background:
    radial-gradient(1100px 480px at 82% -12%, rgba(37, 99, 235, 0.42), transparent 60%),
    linear-gradient(160deg, var(--color-ink), var(--color-ink-2));
}
.hero__inner {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
  max-width: 60rem;
}
.hero__title {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 1.2rem + 3.6vw, 3.4rem);
  font-weight: 800;
}
.hero__lead {
  margin: 0 0 var(--space-lg);
  max-width: 42rem;
  font-size: clamp(1.1rem, 1rem + 0.6vw, 1.35rem);
  color: var(--color-on-dark);
  opacity: 0.92;
}
.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.5rem;
  list-style: none;
  margin-top: var(--space-lg);
}
.hero__badges li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-on-dark-muted);
}
.hero__badges .icon { width: 1.15rem; height: 1.15rem; color: #5b9bff; }

/* ---------- Siatki ---------- */
.grid { display: grid; gap: var(--space-md); }
.grid.plain, ul.plain { list-style: none; }
/* min(100%, X) gwarantuje, ze track nigdy nie przekroczy szerokosci kontenera
   (brak poziomego scrolla na bardzo waskich telefonach). Wzorzec Baseline. */
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 15.5rem), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 13rem), 1fr)); }

/* ---------- Checklista ---------- */
.checklist {
  list-style: none;
  display: grid;
  gap: 0.75rem;
}
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}
.checklist .icon {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.18em;
  color: var(--color-accent);
}

/* ---------- Filary ---------- */
.pillar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}
.pillar__icon {
  display: inline-grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-sm);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent);
  margin-bottom: 0.85rem;
}
.pillar__icon .icon { width: 1.6rem; height: 1.6rem; }
.pillar__title { margin: 0 0 0.4rem; font-size: 1.15rem; }
.pillar__desc { margin: 0; color: var(--color-muted); font-size: 0.97rem; }

/* ---------- Dla kogo ---------- */
.audience {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
}
.audience__title { margin: 0 0 0.35rem; font-size: 1.05rem; }
.audience__desc { margin: 0; color: var(--color-muted); font-size: 0.95rem; }

/* ---------- Funkcje ---------- */
.feature {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-sm);
}
.feature__title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 var(--space);
  font-size: 1.2rem;
}
.feature__icon {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: var(--radius-sm);
  background: rgba(37, 99, 235, 0.1);
  color: var(--color-accent);
  flex: none;
}
.feature__icon .icon { width: 1.35rem; height: 1.35rem; }
.feature__list { list-style: none; display: grid; gap: 0.6rem; }
.feature__list li { display: flex; align-items: flex-start; gap: 0.55rem; }
.feature__list .icon {
  width: 1.15rem;
  height: 1.15rem;
  margin-top: 0.22em;
  color: var(--color-accent);
}
.feature__list span { color: var(--color-muted); }

/* ---------- Kroki ---------- */
.steps {
  list-style: none;
  display: grid;
  gap: var(--space-md);
  max-width: var(--measure-wide);
}
.step {
  display: flex;
  align-items: flex-start;
  gap: var(--space);
}
.step__num {
  display: inline-grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  flex: none;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
}
.step__title { margin: 0.2rem 0 0.3rem; font-size: 1.12rem; }
.step__body p { margin: 0; color: var(--color-muted); }

/* ---------- Zastosowania ---------- */
.usecase {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  box-shadow: var(--shadow-sm);
}
.usecase__title { margin: 0 0 0.5rem; font-size: 1.15rem; }
.usecase__scenario { margin: 0 0 0.75rem; color: var(--color-muted); font-size: 0.95rem; }
.usecase__value { margin: 0; font-size: 0.95rem; }
.usecase__value strong { color: var(--color-accent-ink); }

/* ---------- Architektura ---------- */
.arch {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space);
}
.arch__name { margin: 0 0 0.3rem; font-size: 1.02rem; }
.arch__desc { margin: 0; color: var(--color-muted); font-size: 0.92rem; }

.taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  margin-top: var(--space-lg);
}
.tag {
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font-size: 0.88rem;
  color: var(--color-muted);
}

/* ---------- Roadmapa ---------- */
.roadmap { list-style: none; display: grid; gap: var(--space); }
.roadmap__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space);
}
.roadmap__title { margin: 0 0 0.25rem; font-size: 1.05rem; }
.roadmap__body p { margin: 0; color: var(--color-muted); font-size: 0.95rem; }

.badge {
  flex: none;
  align-self: flex-start;
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge--design { background: #fef3c7; color: #92400e; }
.badge--progress { background: #dbeafe; color: #1e40af; }
.badge--planned { background: #eef1f6; color: #475569; }

/* ---------- CTA ---------- */
.cta {
  color: var(--color-on-dark);
  background:
    radial-gradient(900px 360px at 15% 120%, rgba(37, 99, 235, 0.5), transparent 60%),
    linear-gradient(160deg, var(--color-ink-2), var(--color-ink));
  padding-block: clamp(3rem, 6vw, 5rem);
}
.cta__inner { max-width: var(--measure); text-align: center; }
.cta__title { margin: 0 0 0.6rem; font-size: clamp(1.5rem, 1.1rem + 1.8vw, 2.2rem); }
.cta__lead { margin: 0 0 var(--space-lg); color: var(--color-on-dark); opacity: 0.9; }
.cta__small { margin: var(--space) 0 0; color: var(--color-on-dark-muted); font-size: 0.9rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-ink);
  color: var(--color-on-dark-muted);
  padding-block: var(--space-xl);
}
.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: space-between;
  align-items: flex-start;
}
.site-footer .brand__name { color: var(--color-on-dark); font-weight: 800; font-size: 1.1rem; }
.site-footer__tag { margin: 0.4rem 0 0; max-width: 22rem; font-size: 0.92rem; }
.site-footer__nav ul { list-style: none; display: grid; gap: 0.5rem; }
.site-footer__nav a { color: var(--color-on-dark-muted); text-decoration: none; font-size: 0.92rem; }
.site-footer__nav a:hover { color: var(--color-on-dark); }
.site-footer__meta { margin: 0; font-size: 0.85rem; line-height: 1.6; }

/* ---------- Responsywnosc (minimalna) ---------- */
@media (max-width: 40rem) {
  /* na telefonie ukrywamy kotwice nawigacji (pelne menu w stopce); brand + CTA zostaja */
  .site-nav { display: none; }
  .site-header__inner { justify-content: space-between; }
}

@media (max-width: 30rem) {
  .actions .btn { width: 100%; justify-content: center; }
}

/* ---------- Preferencje ruchu ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}