:root {
  color-scheme: dark;
  font-family: "Segoe UI", Inter, system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  font-synthesis: none;
  --background: #05070b;
  --foreground: #f7f9fc;
  --muted: #8d96a8;
  --faint: rgba(255, 255, 255, 0.075);
  --blue: #3175ff;
  --cyan: #19d3c5;
  --content-width: 82rem;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  background: var(--background);
}

body {
  min-height: 100svh;
  margin: 0;
  overflow-x: hidden;
  color: var(--foreground);
  background:
    radial-gradient(circle at 72% 42%, rgba(49, 117, 255, 0.13), transparent 32rem),
    radial-gradient(circle at 18% 86%, rgba(25, 211, 197, 0.06), transparent 24rem),
    var(--background);
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 0.4rem;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.52;
  background-image:
    linear-gradient(var(--faint) 1px, transparent 1px),
    linear-gradient(90deg, var(--faint) 1px, transparent 1px);
  background-size: 4.5rem 4.5rem;
  mask-image: linear-gradient(to bottom, transparent, black 18%, black 70%, transparent);
}

.ambient-grid::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 62%;
  width: 1px;
  content: "";
  background: linear-gradient(transparent 10%, rgba(49, 117, 255, 0.75), transparent 86%);
  box-shadow: 0 0 3rem rgba(49, 117, 255, 0.55);
}

.page-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto 1fr auto;
  width: min(100%, var(--content-width));
  min-height: 100svh;
  margin-inline: auto;
  padding: clamp(1.5rem, 4vw, 3.75rem);
}

.masthead,
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-block;
  text-decoration: none;
}

.brand img {
  display: block;
  width: clamp(14rem, 22vw, 20rem);
  height: auto;
  filter: drop-shadow(0 0 1.75rem rgba(49, 117, 255, 0.18));
}

.masthead-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.language-switch {
  display: inline-flex;
  flex-shrink: 0;
  gap: 0.2rem;
  padding: 0.2rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.65rem;
}

.language-switch a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.55rem 0.8rem;
  border-radius: 0.4rem;
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.2;
  text-decoration: none;
}

.language-switch a:hover {
  color: var(--foreground);
}

.language-switch a[aria-current="page"] {
  color: var(--foreground);
  background: rgba(49, 117, 255, 0.18);
  box-shadow: inset 0 0 0 1px rgba(131, 170, 255, 0.25);
}

.status {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  letter-spacing: 0.055em;
}

.status-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--cyan);
  box-shadow: 0 0 0 0.3rem rgba(25, 211, 197, 0.1), 0 0 1rem rgba(25, 211, 197, 0.7);
  animation: breathe 3s ease-in-out infinite;
}

main {
  display: grid;
  align-items: center;
  padding-block: clamp(5rem, 12vh, 10rem);
}

.hero {
  position: relative;
  width: min(100%, 68rem);
}

.signal-label {
  position: absolute;
  top: 0.65rem;
  right: 0;
  margin: 0;
  color: rgba(255, 255, 255, 0.28);
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(3.25rem, 8.8vw, 8.8rem);
  font-weight: 610;
  letter-spacing: -0.065em;
  line-height: 0.88;
}

h1 span {
  display: block;
}

.accent-line {
  padding-bottom: 0.1em;
  color: transparent;
  background: linear-gradient(105deg, #ffffff 12%, #83aaff 52%, #22d7c9 112%);
  background-clip: text;
}

html[lang="el"] h1 {
  max-width: 19ch;
  font-size: clamp(2.45rem, 7vw, 7rem);
  letter-spacing: -0.045em;
  line-height: 1.04;
}

.purpose {
  max-width: 40rem;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.65;
}

.signal {
  display: grid;
  grid-template-columns: 3.2rem 1fr 0.5rem;
  gap: 0.65rem;
  align-items: center;
  width: min(100%, 31rem);
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.signal span {
  display: block;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.signal span:nth-child(2) {
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  box-shadow: 0 0 1.4rem rgba(49, 117, 255, 0.45);
  transform-origin: left;
  animation: signal 5s ease-in-out infinite;
}

.signal span:nth-child(3) {
  height: 0.5rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 1rem rgba(25, 211, 197, 0.8);
}

footer {
  align-items: flex-end;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
}

.creator-signature {
  display: inline-flex;
  flex-direction: column;
  gap: 0.28rem;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-decoration: none;
  text-transform: none;
  transition: color 180ms ease;
}

.creator-signature span:first-child {
  color: #dbe1ec;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.creator-signature:hover {
  color: var(--foreground);
}

.domain {
  color: rgba(255, 255, 255, 0.35);
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

@keyframes breathe {
  50% {
    opacity: 0.55;
    transform: scale(0.8);
  }
}

@keyframes signal {
  0%,
  100% {
    opacity: 0.35;
    transform: scaleX(0.12);
  }

  55% {
    opacity: 1;
    transform: scaleX(1);
  }
}

@media (max-width: 46rem) {
  .page-shell {
    padding: 1.4rem;
  }

  .masthead {
    align-items: flex-start;
    flex-wrap: wrap;
  }

  .masthead-actions {
    flex-direction: column;
    align-items: flex-end;
    gap: 0.85rem;
  }

  main {
    padding-block: 5.5rem;
  }

  .signal-label {
    position: static;
    margin-bottom: 1.5rem;
  }

  h1 {
    font-size: clamp(3rem, 16.5vw, 5rem);
    line-height: 0.94;
  }

  html[lang="el"] h1 {
    font-size: clamp(2.45rem, 10.5vw, 4.9rem);
  }

  footer {
    align-items: flex-start;
  }
}

@media (max-width: 31rem) {
  .brand img {
    width: 13.5rem;
  }

  .masthead-actions {
    align-items: flex-start;
    width: 100%;
  }

  footer {
    flex-direction: column;
    gap: 1.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}