/* ========================================================================== 
   RESPONSYWNOŚĆ / DOSTĘPNOŚĆ / FALLBACKI
   ========================================================================== */
@media (max-width: 1220px) {
  .desktop-nav a { padding-inline: .52rem; }
  .social-links--header { display: none; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .service-card { min-height: 390px; }
}

@media (max-width: 980px) {
  :root { --header-height: 70px; }
  .site-header { padding-inline: 14px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: grid; }
  .brand { min-width: 0; }
  .hero-grid,
  .about-grid,
  .stack-layout,
  .contact-layout { grid-template-columns: 1fr; }
  .panel--hero { min-height: 650px; }
  .panel--control { min-height: auto; }
  .panel--principles { grid-column: auto; }
  .section-heading { grid-template-columns: 1fr; gap: 18px; }
  .contact-layout { padding-bottom: 82px; }
}

@media (max-width: 760px) {
  .section-shell { width: min(calc(100% - 24px), var(--container)); }
  .site-header { padding-inline: 8px; }
  .header-shell { padding-right: 7px; }
  .brand-copy small { display: none; }
  .hero { padding-top: 8px; }
  .hero-content { padding: 32px 22px 28px; }
  .panel--hero { min-height: 620px; }
  .terminal-command { margin-top: 28px; font-size: .65rem; }
  .hero-title { font-size: clamp(1.45rem, 7vw, 3rem); }
  .hero-lead { margin-top: 24px; font-size: .94rem; }
  .hero-actions { align-items: stretch; }
  .hero-actions .button { flex: 1 1 100%; }
  .hero-console { grid-template-columns: 1fr; gap: 10px; padding: 14px 22px 18px; }
  .hero-console > div { justify-content: flex-start; }
  .panel--control { padding: 22px; }
  .process-stage { padding: 16px; background-size: 22px 22px; }
  .flow-pipeline { grid-template-columns: 1fr; }
  .flow-step { width: 100%; grid-template-columns: 54px 1fr; justify-items: start; align-items: center; gap: 12px; text-align: left; }
  .flow-step__node { width: 46px; height: 46px; border-radius: 12px; }
  .flow-step strong { display: block; max-width: none; min-height: 0; font-size: .64rem; text-align: left; }
  .flow-connector { width: 54px; height: 26px; }
  .flow-connector::before { top: 3px; bottom: 3px; left: 23px; width: 1px; height: auto; background: linear-gradient(180deg, var(--line-strong), color-mix(in srgb, var(--accent) 72%, var(--line-strong)), var(--line-strong)); background-size: 100% 220%; animation-name: connector-line-glow-vertical; }
  .flow-connector::after { top: auto; right: auto; bottom: 3px; left: 20px; transform: rotate(135deg); }
  .flow-connector i { top: -4px; left: 21px; animation: connector-particle-vertical 2.6s linear infinite; }
  .content-section { padding-top: 88px; }
  .section-heading { margin-bottom: 22px; }
  .section-heading h2 { font-size: clamp(2.2rem, 12vw, 3.6rem); }
  .panel--story { padding: 24px; min-height: auto; }
  .check-list { grid-template-columns: 1fr; }
  .principle-list { grid-template-columns: 1fr; }
  .principle-item { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .principle-item:last-child { border-bottom: 0; }
  .services-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 380px; }
  .service-explorer { padding: 24px; }
  .service-explorer-head,
  .stack-rider-copy { grid-template-columns: 1fr; gap: 18px; }
  .service-tabs { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 6px; scrollbar-width: thin; }
  .service-tabs button { flex: 0 0 auto; }
  .service-detail-grid { grid-template-columns: 1fr; }
  .service-detail-card { min-height: auto; }
  .stack-matrix-copy { grid-template-columns: 1fr; gap: 18px; }
  .tech-layer { grid-template-columns: 42px 1fr; gap: 14px; }
  .tech-layer-tools { grid-column: 1 / -1; justify-content: flex-start; padding-left: 56px; }
  .stack-route { grid-template-columns: 1fr; gap: 8px; }
  .route-line { width: 100%; height: 28px; }
  .route-line::before { top: 4px; bottom: 4px; left: 50%; width: 1px; height: auto; }
  .route-line::after { top: auto; right: auto; bottom: 4px; left: calc(50% - 3px); transform: rotate(135deg); }
  .route-line i { top: -2px; left: calc(50% - 2px); animation: route-particle-vertical 2.2s linear infinite; }
  .partner-logo { width: 170px; flex-basis: 170px; min-height: 104px; }
  .partners-note { align-items: flex-start; text-align: left; }
  .panel--contact { min-height: 520px; padding: 30px 22px 60px; }
  .contact-form-button { width: 100%; }
  .panel--contact-data { min-height: 440px; padding: 22px; }
  .contact-data > div { grid-template-columns: 1fr; gap: 4px; }
  .contact-data dd { text-align: left; }
  .footer-inner { align-items: flex-start; }
}


@media (max-width: 560px) {
  .segmented-switch { gap: 2px; padding: 2px; }
  .segmented-switch button { min-width: 39px; padding-inline: 5px; gap: 4px; }
  .theme-switch button { min-width: 42px; }
  .theme-switch button span { display: none; }
  .tech-layer { grid-template-columns: 34px 1fr; padding: 18px; }
  .tech-layer-tools { padding-left: 48px; }
}
@media (max-width: 430px) {
  .brand-copy { display: none; }
  .header-actions { gap: 4px; }
  .language-switch button { min-width: 36px; }
  .language-switch img { width: 16px; height: 11px; }
  .metric-grid { grid-template-columns: 1fr; }
  .panel-heading-row { align-items: flex-start; }
  .status-lamp { flex: 0 0 auto; }
}

@keyframes connector-particle-vertical {
  from { top: -4px; }
  to { top: calc(100% + 1px); }
}

@keyframes route-particle-vertical {
  from { top: -4px; }
  to { top: calc(100% + 1px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
  /* The single-line capability ticker is an explicit functional visual requested for the design. */
  .ticker-track {
    animation-name: ticker-marquee !important;
    animation-duration: var(--ticker-duration, 24s) !important;
    animation-timing-function: linear !important;
    animation-iteration-count: infinite !important;
  }
}

@media (prefers-contrast: more) {
  :root { --line: rgba(0,0,0,.34); --line-strong: rgba(0,0,0,.56); }
  html[data-theme="dark"] { --line: rgba(255,255,255,.3); --line-strong: rgba(255,255,255,.54); }
}

@media (forced-colors: active) {
  .panel, .header-shell, .button, .icon-button { border: 1px solid CanvasText; }
  .status-dot, .availability-pulse, .status-lamp { background: Highlight; }
}

@supports not (color: color-mix(in srgb, white, black)) {
  body { background: var(--bg); }
  .header-shell, .site-header.is-scrolled { background: var(--surface); }
  .panel { background: var(--surface); }
  .panel--contact { background: var(--surface-contact); }
}

@keyframes connector-line-glow-vertical {
  0%, 12%, 100% { background-position: 0 100%; opacity: .38; }
  28%, 48% { background-position: 0 0; opacity: 1; }
  68% { opacity: .52; }
}