/* ==========================================================================
   KODEK — arkusz stylów
   Redakcyjny, typograficzny układ: ciepła biel, atramentowy granat,
   jeden akcent cyjanowy wyciągnięty z logo. Bez frameworków CSS.
   ========================================================================== */

:root {
  /* Typografia */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-text: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Paleta — ciepła biel jako tło, atramentowy granat jako tekst */
  --color-bg: #faf6ef;
  --color-surface: #f1ebe0;
  --color-ink: #10182b;
  --color-ink-soft: #454c5f;
  --color-ink-faint: #646d89; /* stonowany, lecz zgodny z AA (4.5:1) na ciepłym tle */
  --color-line: rgba(16, 24, 43, 0.14);
  --color-line-strong: rgba(16, 24, 43, 0.28);

  /* Jeden akcent, zgodny z logo (próbkowany: #0099DD) */
  --color-accent: #0099dd;
  --color-accent-text: #006690; /* przyciemniony wariant — spełnia kontrast AA na jasnym tle */

  /* Zamykające, ciemne pasmo (kontakt / stopka) — kolor atramentu z logo */
  --color-dark-bg: #0f172a;
  --color-dark-text: #f5f2ec;
  --color-dark-muted: rgba(245, 242, 236, 0.68);
  --color-dark-line: rgba(245, 242, 236, 0.18);

  --radius-sm: 4px;
  --radius-md: 8px;

  --container: 1180px;
  --transition: 0.18s ease;
}

/* --- Reset i reguły globalne --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-text);
  line-height: 1.6;
  min-height: 100vh;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-ink);
}

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

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

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.wrap {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--color-ink);
  color: var(--color-bg);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 2000;
  transform: translateY(-150%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Widoczny, spójny focus dla klawiatury */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-accent-text);
  outline-offset: 3px;
  border-radius: 2px;
}

.dark-band :is(a, button, input, textarea):focus-visible {
  outline-color: var(--color-accent);
}

/* --- Przyciski --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--color-ink);
  color: var(--color-bg);
  border-color: var(--color-ink);
}

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

.btn-ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: var(--color-line-strong);
}

.btn-ghost:hover {
  border-color: var(--color-ink);
}

.btn-block {
  width: 100%;
}

/* --- Nagłówek --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-line);
  transition: box-shadow var(--transition);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 24px -20px rgba(16, 24, 43, 0.4);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-mark {
  height: 32px;
  width: auto;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}

.main-nav a {
  display: inline-block;
  padding: 0.4rem 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-ink);
  border-color: var(--color-accent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

/* Przycisk mobilnego menu */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-sm);
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
}

.nav-toggle-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle-box span {
  display: block;
  height: 2px;
  background: var(--color-ink);
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* --- Nagłówki sekcji i rytm --- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  margin-bottom: 1rem;
}

.eyebrow-index {
  font-family: var(--font-text);
  font-weight: 700;
  color: var(--color-accent-text);
  padding-right: 0.65rem;
  border-right: 1px solid var(--color-line-strong);
}

.eyebrow-on-dark {
  color: var(--color-dark-muted);
}

.eyebrow-on-dark .eyebrow-index {
  color: var(--color-accent);
  border-color: var(--color-dark-line);
}

.section-title {
  font-weight: 600;
  font-size: clamp(1.7rem, 1.3rem + 1.8vw, 2.35rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin-bottom: 0.9rem;
  max-width: 20ch;
}

.section-title.on-dark {
  color: var(--color-dark-text);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-ink-soft);
  max-width: 56ch;
}

.section-lead.on-dark-muted {
  color: var(--color-dark-muted);
}

.section {
  padding: 6rem 0;
}

.section-tint {
  background: var(--color-surface);
}

.section-head {
  max-width: 640px;
  margin-bottom: 3rem;
}

/* --- Hero --- */
.hero {
  padding: 5rem 0 6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 4rem;
}

.hero-lead {
  max-width: 640px;
}

.hero-title {
  font-weight: 600;
  font-size: clamp(2.3rem, 1.5rem + 3.2vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  max-width: 17ch;
  margin-bottom: 1.5rem;
}

.hero-text {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--color-ink-soft);
  max-width: 48ch;
  margin-bottom: 2.25rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-profile {
  margin-top: 4.5rem;
  align-self: start;
}

.hero-profile-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--color-line-strong);
  margin-bottom: 0;
}

.hero-profile-row {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.hero-profile-row dt {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-faint);
}

.hero-profile-row dd {
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-ink);
}

.hero-profile-row a {
  color: var(--color-accent-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --- W czym pomagam (wiersze numerowane) --- */
.service-list,
.process-list {
  border-top: 1px solid var(--color-line-strong);
}

.service-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 2rem;
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--color-line);
  counter-increment: service;
  position: relative;
}

.service-row::before {
  content: "0" counter(service);
  font-family: var(--font-display);
  font-size: 2.1rem;
  font-weight: 500;
  color: var(--color-accent-text);
  line-height: 1;
}

.service-list {
  counter-reset: service;
}

.service-title {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.service-text {
  color: var(--color-ink-soft);
  max-width: 62ch;
  margin-bottom: 0.9rem;
}

.service-stack {
  font-size: 0.88rem;
  color: var(--color-ink-faint);
  font-weight: 500;
}

/* --- Jak wygląda współpraca (oś procesu) --- */
.process-list {
  counter-reset: step;
  border-top: none;
  position: relative;
}

.process-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  counter-increment: step;
  position: relative;
}

.process-row::before {
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: 1.7rem;
  font-weight: 500;
  color: var(--color-accent-text);
  line-height: 1;
}

.process-row:not(:last-child) {
  border-bottom: 1px solid var(--color-line);
}

.process-title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.process-text {
  color: var(--color-ink-soft);
  max-width: 62ch;
}

/* --- O mnie --- */
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 4rem;
}

.about-head {
  margin-bottom: 0;
}

.about-body p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--color-ink-soft);
  max-width: 62ch;
}

.about-body p + p {
  margin-top: 1.25rem;
}

.about-body strong {
  color: var(--color-ink);
}

/* --- Technologie --- */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  position: relative;
}

.tech-grid::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--color-line-strong);
}

.tech-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.tech-text {
  color: var(--color-ink-soft);
  margin-bottom: 1.1rem;
  max-width: 50ch;
}

.tech-stack {
  font-size: 0.9rem;
  color: var(--color-ink-faint);
  font-weight: 500;
}

.tech-infra {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--color-line-strong);
  color: var(--color-ink-soft);
  font-size: 0.95rem;
}

.tech-infra span {
  font-weight: 600;
  color: var(--color-ink);
}

/* --- Kontakt i stopka (zamykające, ciemne pasmo) --- */
.dark-band {
  background: var(--color-dark-bg);
  color: var(--color-dark-text);
}

.dark-band.section {
  padding-top: 6rem;
  padding-bottom: 5rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-facts {
  margin-top: 2.5rem;
}

.contact-facts > div {
  padding: 1.1rem 0;
  border-top: 1px solid var(--color-dark-line);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.contact-facts > div:last-child {
  border-bottom: 1px solid var(--color-dark-line);
}

.contact-facts dt {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-dark-muted);
}

.contact-facts dd {
  font-size: 1.05rem;
  font-weight: 500;
}

.contact-facts a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-box {
  background: rgba(245, 242, 236, 0.05);
  border: 1px solid var(--color-dark-line);
  border-radius: var(--radius-md);
  padding: 2.25rem;
}

.honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.form-group {
  margin-bottom: 1.3rem;
}

.form-label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-dark-muted);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(245, 242, 236, 0.06);
  border: 1px solid var(--color-dark-line);
  color: var(--color-dark-text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-dark-muted);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 153, 221, 0.25);
}

.dark-band .btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-dark-bg);
}

.dark-band .btn-primary:hover {
  background: #7fd4f2;
  border-color: #7fd4f2;
}

.form-message {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  text-align: center;
}

.form-message-success {
  background: rgba(52, 211, 153, 0.14);
  border: 1px solid #34d399;
  color: #86efac;
}

.form-message-error {
  background: rgba(248, 113, 113, 0.14);
  border: 1px solid #f87171;
  color: #fca5a5;
}

/* --- Stopka (kontynuacja ciemnego pasma) --- */
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  padding: 2rem 0 2.5rem;
  border-top: 1px solid var(--color-dark-line);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--color-dark-muted);
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: var(--color-dark-text);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--color-dark-muted);
}

/* ==========================================================================
   Responsywność
   ========================================================================== */

@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-profile {
    margin-top: 0;
    max-width: 480px;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-line);
    display: none;
    max-height: calc(100vh - 84px);
    overflow-y: auto;
  }
  .main-nav.is-open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.5rem 1rem;
  }
  .main-nav li {
    border-top: 1px solid var(--color-line);
  }
  .main-nav li:first-child {
    border-top: none;
  }
  .main-nav a {
    display: block;
    padding: 0.9rem 0;
    border-bottom: none;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .header-actions .btn-primary {
    padding: 0.7rem 1rem;
    font-size: 0.88rem;
  }

  .section {
    padding: 4rem 0;
  }
  .hero {
    padding: 3rem 0 4rem;
  }

  .tech-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .tech-grid::after {
    display: none;
  }
  .tech-grid .tech-col + .tech-col {
    padding-top: 2.5rem;
    border-top: 1px solid var(--color-line-strong);
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .dark-band.section {
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .wrap {
    padding: 0 1.25rem;
  }
  .service-row,
  .process-row {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }
  .service-row::before,
  .process-row::before {
    font-size: 1.5rem;
  }
}

/* Zredukowany ruch: wyłączamy nieistotne animacje i płynne przewijanie */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}