:root {
  --deep: #06101c;
  --foam: #dce8f6;
  --ink: #e8eef8;
  --ink-soft: rgba(232, 238, 248, 0.72);
  --line: rgba(220, 232, 246, 0.16);
  --orange: #f08a2a;
  --pv-blue: #0066cc;
  --ais: #187a82;
  --adsb: #3b7fd4;
  --asterix: #c47a1a;
  --mavlink: #c44d6e;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "Source Sans 3", system-ui, sans-serif;
  --code: "Fira Code", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--sans);
  background: var(--deep);
}

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

/* —— Planevision site header (matches planevision.systems) —— */

.site-header {
  position: relative;
  z-index: 2;
  background: var(--pv-blue);
  color: #fff;
  box-shadow: 12px 12px 50px rgba(0, 0, 0, 0.4);
}

.site-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem clamp(1rem, 3vw, 1.75rem);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

.site-logo {
  display: block;
  line-height: 0;
}

.site-logo img {
  display: block;
  width: auto;
  height: 35px;
}

.site-tagline {
  margin: 0;
  padding: 0 0.5rem;
  font-family: var(--code);
  font-size: 0.78rem;
  font-weight: 300;
  font-style: normal;
  line-height: 1.15;
  color: #fff;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem 1.1rem;
  font-size: 1.05rem;
  font-weight: 400;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  text-decoration: underline;
  outline: none;
}

.site-contact {
  display: inline-block;
  margin-left: 0.15rem;
  padding: 0.55rem 1.15rem;
  border: 0.8px solid #fff;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.2);
  font-weight: 300;
  letter-spacing: 0.02em;
}

.site-contact:hover,
.site-contact:focus-visible {
  background: rgba(255, 255, 255, 0.32);
  text-decoration: none;
}

/* —— Landing content —— */

.sky {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 85% 55% at 75% -5%, rgba(26, 74, 138, 0.5) 0%, transparent 55%),
    radial-gradient(ellipse 55% 40% at 8% 90%, rgba(15, 40, 80, 0.5) 0%, transparent 50%),
    linear-gradient(165deg, #0c1c38 0%, var(--deep) 48%, #040810 100%);
}

.sky-wash {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 42%, rgba(59, 127, 212, 0.07) 58%, transparent 74%),
    repeating-linear-gradient(0deg, transparent 0, transparent 55px, rgba(220, 232, 246, 0.025) 56px),
    repeating-linear-gradient(90deg, transparent 0, transparent 55px, rgba(220, 232, 246, 0.025) 56px);
  animation: wash-drift 18s ease-in-out infinite alternate;
}

.sky-glow {
  position: absolute;
  width: min(55vw, 520px);
  aspect-ratio: 1;
  right: -6%;
  top: 18%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 127, 212, 0.16) 0%, transparent 68%);
  animation: glow-breathe 8s ease-in-out infinite;
}

@keyframes wash-drift {
  from { opacity: 0.75; transform: translateX(0); }
  to { opacity: 1; transform: translateX(-1.5%); }
}

@keyframes glow-breathe {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.95; transform: scale(1.06); }
}

@keyframes rise {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.shell {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 8rem);
  min-height: calc(100dvh - 8rem);
  display: flex;
  flex-direction: column;
  max-width: 980px;
  margin: 0 auto;
  padding: 1rem clamp(1.25rem, 4vw, 2.5rem) 2.5rem;
}

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem 0 2rem;
}

.headline {
  margin: 0;
  max-width: none;
  font-weight: 700;
  font-size: clamp(1.25rem, 3.4vw, 2.15rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #fff;
  white-space: nowrap;
  animation: rise 0.7s ease both;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 2.1rem;
  animation: rise 0.8s ease 0.12s both;
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.4rem;
  min-height: 9.5rem;
  padding: 1.25rem 1.3rem 1.15rem;
  border: 1px solid var(--line);
  background: rgba(8, 18, 36, 0.55);
  overflow: hidden;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.tile::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: var(--tile-accent, var(--orange));
}

.tile:hover,
.tile:focus-visible {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--tile-accent, var(--orange)) 70%, white);
  background: rgba(12, 24, 46, 0.78);
  outline: none;
}

.tile-ais { --tile-accent: var(--ais); }
.tile-adsb { --tile-accent: var(--adsb); }
.tile-asterix { --tile-accent: var(--asterix); }
.tile-mavlink { --tile-accent: var(--mavlink); }

.tile-sign {
  display: block;
  font-weight: 700;
  font-size: clamp(1.85rem, 4.2vw, 2.45rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: #fff;
}

.tile-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.tile-wire {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--tile-accent, var(--orange));
  max-width: 70%;
  line-height: 1.25;
}

.tile-go {
  font-weight: 700;
  font-size: 0.92rem;
  color: #fff;
  border-bottom: 2px solid var(--tile-accent, var(--orange));
  padding-bottom: 0.05rem;
}

.tile:hover .tile-go,
.tile:focus-visible .tile-go {
  color: var(--tile-accent, var(--orange));
}

@media (max-width: 900px) {
  .site-header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav {
    font-size: 0.95rem;
    gap: 0.45rem 0.9rem;
  }
}

@media (max-width: 640px) {
  .headline {
    white-space: normal;
  }

  .tiles {
    grid-template-columns: 1fr;
  }

  .tile {
    min-height: 7.5rem;
  }

  .site-tagline {
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sky-wash,
  .sky-glow,
  .headline,
  .tiles {
    animation: none;
  }

  .tile {
    transition: none;
  }
}