:root {
  --bg-1: #07111d;
  --bg-2: #10233d;
  --card: rgba(7, 18, 31, 0.78);
  --line: rgba(255, 255, 255, 0.12);
  --text: #f3f7fb;
  --muted: #a6b6c8;
  --accent: #2dc8ff;
  --accent-2: #3ef0b3;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(62, 240, 179, 0.16), transparent 28%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
}

.landing {
  width: 100%;
  display: grid;
  place-items: center;
}

.card {
  width: min(100%, 420px);
  padding: 2rem;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.28);
}

.eyebrow {
  margin: 0 0 0.8rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--accent-2);
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 8vw, 3.4rem);
  line-height: 0.95;
}

.subtitle {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.countdown {
  margin: 1.8rem 0;
  display: grid;
  gap: 0.3rem;
  justify-items: center;
}

#countdown-value {
  font-size: clamp(3rem, 12vw, 4.4rem);
  line-height: 1;
  color: var(--accent);
}

.countdown small {
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.join-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 3.4rem;
  padding: 0.9rem 1.2rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04111b;
  font-weight: 700;
  text-decoration: none;
  transition: transform 180ms ease;
}

.join-button:hover {
  transform: translateY(-2px);
}