:root {
  --ink: #111111;
  --placeholder: #8a8a8a;
  --border: #d4d4d4;
  --bg: #ffffff;
  --radius: 6px;
  --gutter-x: clamp(20px, 5vw, 80px);
  --gutter-y: clamp(24px, 3.5vw, 44px);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  font-family: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--ink);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#background,
#sonar {
  /* Décalé de 20px vers le haut pour remonter l'horizon du champ de points */
  position: fixed;
  top: -20px;
  left: 0;
  right: 0;
  width: 100%;
  height: 100vh;
  z-index: 0;
}

#sonar {
  pointer-events: none;
}

.header,
.content {
  position: relative;
  z-index: 1;
}

.header {
  display: flex;
  justify-content: flex-end;
  padding: 36px 40px 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  font-size: 13px;
  color: #9c9c9c;
  text-decoration: none;
  border: 1px solid #e5e5e5;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(4px);
  transition: background-color 150ms ease, border-color 150ms ease;
}

.pill:hover,
.pill:focus-visible {
  background-color: rgba(17, 17, 17, 0.03);
  border-color: #c4c4c4;
  color: #6f6f6f;
  outline: none;
}

.content {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: clamp(20px, 3.5vh, 32px);
  padding: 0 var(--gutter-x);
  pointer-events: none;
}

.content .logo,
.content .signup {
  pointer-events: auto;
}

.logo {
  width: clamp(180px, 24vw, 300px);
  height: auto;
}

.signup {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  width: min(480px, 100%);
}

.signup input[type="email"] {
  flex: 1 1 240px;
  min-width: 0;
  padding: 10px 16px;
  font: inherit;
  font-family: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.signup input[type="email"]::placeholder {
  font-family: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--placeholder);
}

.signup input[type="email"]:focus {
  outline: none;
  border-color: #8a8a8a;
}

.signup button {
  padding: 10px 20px;
  font: inherit;
  font-family: "DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 500;
  color: #ffffff;
  background: #2563eb;
  border: 1px solid #2563eb;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.signup button:hover,
.signup button:focus-visible {
  background-color: #1d4ed8;
  border-color: #1d4ed8;
  outline: none;
}

.signup-done {
  width: 100%;
  text-align: center;
  font-size: 13px;
  color: #6f6f6f;
  padding: 10px 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}