/*
 * CloudState – strona-zajawka.
 * Jedyny arkusz stylów. Bez zewnętrznych czcionek, bez @import, bez url() do obcych hostów
 * (CSP: style-src 'self', img-src 'self', font-src 'none').
 */

:root {
  --bg: #0b1120;
  --bg-elev: #111a2e;
  --border: #1f2a44;
  --text: #e6ebf5;
  --muted: #9aa6bf;
  --accent: #5eead4;
  --accent-strong: #2dd4bf;
  --accent-ink: #042f2e;
  --grid: rgba(148, 163, 184, 0.06);
  --radius: 14px;
  --maxw: 68rem;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f9fc;
    --bg-elev: #ffffff;
    --border: #dbe2ee;
    --text: #0f172a;
    --muted: #475569;
    --accent: #0f766e;
    --accent-strong: #0d9488;
    --accent-ink: #ffffff;
    --grid: rgba(15, 23, 42, 0.05);
    color-scheme: light;
  }
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 8px;
  z-index: 10;
}

.skip-link:focus {
  top: 1rem;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* Nagłówek */

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.brand svg {
  width: 32px;
  height: 32px;
  flex: none;
}

.lang {
  font-size: 0.95rem;
  color: var(--muted);
}

.lang a {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
}

.lang a:hover {
  border-color: var(--accent);
}

/* Treść */

main {
  flex: 1;
}

.hero {
  padding-block: clamp(3rem, 10vw, 7rem) clamp(2rem, 6vw, 4rem);
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 1.25rem;
  max-width: 22ch;
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.lead {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
}

h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  letter-spacing: -0.015em;
}

.features {
  padding-block: 1rem 3rem;
}

.grid {
  display: grid;
  /* 3 kolumny na szerokim ekranie, 2 na średnim, 1 na telefonie. */
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  padding: 1.5rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.audience,
.contact {
  padding-block: 2rem;
}

.audience p {
  margin: 0 0 0.75rem;
  max-width: 65ch;
  color: var(--muted);
}

.audience ul {
  margin: 0;
  padding-left: 1.25rem;
  max-width: 65ch;
  color: var(--muted);
}

.audience li + li {
  margin-top: 0.35rem;
}

.audience li::marker {
  color: var(--accent);
}

.contact .box {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.contact p {
  margin: 0 0 1rem;
  max-width: 60ch;
  color: var(--muted);
}

/* Adres e-mail jako tekst do skopiowania – bez mailto i bez JS. */
.email {
  display: inline-block;
  padding: 0.6rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 10px;
  color: var(--text);
  font-family: ui-monospace, "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 1.05rem;
  user-select: all;
  overflow-wrap: anywhere;
}

/* Stopka */

.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.5rem;
}

.site-footer p {
  margin: 0;
}

/* Informacja o prywatności – pełna szerokość, nad prawami autorskimi. */
.site-footer .note {
  flex-basis: 100%;
}

/* Strona błędu */

.error-page {
  padding-block: clamp(4rem, 12vw, 8rem);
}

.error-page .code {
  margin: 0 0 0.5rem;
  color: var(--accent);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.08em;
}

@media print {
  body {
    background: #fff;
    color: #000;
  }

  .lang,
  .skip-link {
    display: none;
  }
}