:root {
  --ink: #a3aabf;
  --ink-dim: #585b68;
  --ink-faint: #2e3038;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: #050505;
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12vh;
  padding: 4vh 6vw;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4.5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  text-align: center;
  color: #c6cbd9;
  text-shadow: 0 0 40px rgba(88, 91, 104, 0.35);
}

input {
  width: min(80vw, 460px);
  height: clamp(44px, 5vw, 60px);
  background: transparent;
  border: 1px solid var(--ink-dim);
  border-radius: 12px;
  padding: 0 1.5rem;
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  font-weight: 300;
  letter-spacing: 0.35em;
  text-align: center;
  color: var(--ink);
  caret-color: var(--ink);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

input::placeholder {
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

input:focus {
  outline: none;
  border-color: var(--ink);
  box-shadow: 0 0 24px rgba(163, 170, 191, 0.12);
}