:root {
  --bg: #07111f;
  --bg-soft: #0f1f35;
  --surface: rgba(9, 20, 38, 0.68);
  --surface-strong: rgba(11, 22, 40, 0.9);
  --line: rgba(183, 218, 255, 0.14);
  --text: #eef7ff;
  --muted: rgba(238, 247, 255, 0.7);
  --accent: #7ef0c5;
  --accent-strong: #4fc4ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --mx: 50vw;
  --my: 50vh;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow: hidden;
  background:
    radial-gradient(circle at var(--mx) var(--my), rgba(126, 240, 197, 0.24), transparent 14rem),
    radial-gradient(circle at calc(var(--mx) * 0.82) calc(var(--my) * 1.08), rgba(79, 196, 255, 0.2), transparent 20rem),
    linear-gradient(145deg, #04101d 0%, #091728 40%, #03111d 100%);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 4.2rem 4.2rem;
  mask-image: radial-gradient(circle at center, black 30%, transparent 92%);
  opacity: 0.36;
  pointer-events: none;
}

.particle-layer,
.grain,
.spotlight,
.tracker {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.particle-layer {
  z-index: 0;
}

.grain {
  z-index: 1;
  opacity: 0.08;
  background-image:
    linear-gradient(0deg, transparent 24%, rgba(255, 255, 255, 0.28) 25%, transparent 26%),
    linear-gradient(90deg, transparent 24%, rgba(255, 255, 255, 0.18) 25%, transparent 26%);
  background-size: 3px 3px;
  mix-blend-mode: soft-light;
}

.spotlight {
  z-index: 2;
  background:
    radial-gradient(circle 16rem at var(--mx) var(--my), rgba(255, 255, 255, 0.08), transparent 65%),
    radial-gradient(circle 32rem at var(--mx) var(--my), rgba(126, 240, 197, 0.08), transparent 60%);
}

.tracker {
  top: 0;
  left: 0;
  right: auto;
  bottom: auto;
  z-index: 4;
  width: 1rem;
  height: 1rem;
  border-radius: 999px;
  transform: translate3d(calc(var(--mx) - 50%), calc(var(--my) - 50%), 0);
  transition: opacity 180ms ease;
}

.tracker-ring {
  width: 4rem;
  height: 4rem;
  margin-left: -1.5rem;
  margin-top: -1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.36);
  box-shadow: 0 0 40px rgba(126, 240, 197, 0.18);
  backdrop-filter: blur(6px);
}

.tracker-core {
  width: 0.85rem;
  height: 0.85rem;
  margin-left: 0.08rem;
  margin-top: 0.08rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 22px rgba(126, 240, 197, 0.8);
}

.shell {
  position: relative;
  z-index: 3;
  min-height: 100vh;
  padding: clamp(1.5rem, 4vw, 3rem);
  display: grid;
  align-content: center;
  gap: 1.5rem;
}

.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.24em;
  font-size: 0.78rem;
}

h1 {
  margin: 0;
  max-width: 10ch;
  font-family: "Arial Black", "Trebuchet MS", sans-serif;
  font-size: clamp(3.5rem, 11vw, 8rem);
  line-height: 0.94;
  letter-spacing: -0.05em;
  text-wrap: balance;
}

.lead {
  max-width: 38rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.7;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.hint {
  margin: -0.5rem 0 0;
  color: rgba(238, 247, 255, 0.62);
  font-size: 0.95rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 10rem;
  padding: 0.95rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.primary {
  color: #04111a;
  background: linear-gradient(135deg, var(--accent), #befce6);
  box-shadow: 0 12px 30px rgba(126, 240, 197, 0.26);
}

.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.12);
}

.status-card {
  width: min(100%, 52rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  background: linear-gradient(180deg, rgba(15, 31, 53, 0.72), rgba(7, 17, 31, 0.82));
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.status-card > div {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card-label,
.card-value {
  margin: 0;
}

.card-label {
  color: var(--muted);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.card-value {
  margin-top: 0.6rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.button:focus-visible {
  outline: 2px solid rgba(126, 240, 197, 0.8);
  outline-offset: 3px;
}

@media (max-width: 720px) {
  body {
    overflow: auto;
  }

  .shell {
    padding-top: 5rem;
    padding-bottom: 2rem;
  }

  .status-card {
    grid-template-columns: 1fr;
  }

  .tracker-ring,
  .tracker-core {
    display: none;
  }
}

@media (pointer: coarse) {
  .tracker-ring,
  .tracker-core {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .button,
  .tracker {
    transition: none;
  }

  body {
    background:
      radial-gradient(circle at 50% 20%, rgba(126, 240, 197, 0.16), transparent 14rem),
      linear-gradient(145deg, #04101d 0%, #091728 40%, #03111d 100%);
  }
}