:root {
  color-scheme: only light;
  --sky-1: #6ec8ff;
  --sky-2: #8fe3ff;
  --sky-3: #f2fbff;
  --ink-1: #0c1727;
  --ink-2: #223a54;
  --glass: rgba(255, 255, 255, 0.46);
  --glass-border: rgba(255, 255, 255, 0.6);
  --shadow: 0 18px 60px rgba(12, 23, 39, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Space Grotesk", system-ui, -apple-system, sans-serif;
  color: var(--ink-1);
  min-height: 100vh;
  background: var(--sky-3);
}

.page {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 32px 20px 24px;
  overflow: hidden;
}

.sky-background {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.sky-gradient {
  position: absolute;
  inset: -20%;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.9), transparent 55%),
    linear-gradient(135deg, var(--sky-1), var(--sky-2) 55%, var(--sky-3) 100%);
  animation: drift 18s ease-in-out infinite alternate;
}

.cloud-haze {
  position: absolute;
  inset: -30%;
  background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.6), transparent 55%),
    radial-gradient(circle at 50% 70%, rgba(255, 255, 255, 0.5), transparent 60%);
  filter: blur(40px);
  opacity: 0.65;
  animation: cloudMove 28s linear infinite;
}

.radar-rings {
  position: absolute;
  inset: -10%;
  background: repeating-radial-gradient(
    circle at 60% 40%,
    rgba(8, 28, 51, 0.08),
    rgba(8, 28, 51, 0.08) 1px,
    transparent 12px,
    transparent 38px
  );
  opacity: 0.35;
  mix-blend-mode: soft-light;
}

.contrails {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.25) 40%, transparent 60%),
    linear-gradient(120deg, transparent 10%, rgba(255, 255, 255, 0.2) 35%, transparent 70%);
  background-size: 700px 700px;
  background-position: -100px -120px, 200px 80px;
  opacity: 0.35;
  animation: contrailShift 24s ease-in-out infinite;
}

.site-header {
  width: min(96vw, 980px);
  position: absolute;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  justify-content: center;
  margin: 0 auto;
}

.site-nav {
  display: inline-flex;
  gap: 8px;
  padding: 8px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.42);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(12, 23, 39, 0.1);
}

.site-nav a {
  text-decoration: none;
  color: var(--ink-2);
  font-size: 0.86rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 9px 12px;
  border-radius: 10px;
  transition: background 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-active {
  background: rgba(12, 23, 39, 0.08);
  color: var(--ink-1);
}

.panel {
  position: relative;
  z-index: 1;
  align-self: center;
  margin: 0 auto;
  width: min(92vw, 760px);
  min-height: 320px;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  background: var(--glass);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  text-align: center;
  padding: 28px;
}

.panel h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

.footer {
  position: relative;
  z-index: 1;
  display: flex;
  align-self: end;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--ink-2);
}

@media (max-width: 700px) {
  .page {
    padding: 24px 16px;
  }

  .site-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
  }
}

@keyframes drift {
  0% {
    transform: translate3d(-2%, -3%, 0);
  }
  100% {
    transform: translate3d(2%, 3%, 0);
  }
}

@keyframes cloudMove {
  0% {
    transform: translate3d(-2%, 0, 0);
  }
  50% {
    transform: translate3d(2%, -2%, 0);
  }
  100% {
    transform: translate3d(-2%, 1%, 0);
  }
}

@keyframes contrailShift {
  0% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(-60px, 30px, 0);
  }
  100% {
    transform: translate3d(0, 0, 0);
  }
}