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

.nav_ex {
  display: flex;
  gap: .5rem;
  background: #2563eb;
}

.nav_ex a {
  padding: .2rem .5rem;
  background: #2563eb;
  color: #fff;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 300;
}

.nav_ex a:hover {
  color: lightgray;
  cursor: pointer;
}

:root {
  --bg: #ffffff;
  --text: #11182786;
  --muted: #6b7280;
  --border: #cbd5e1;
  --focus: #6f008d;
  --ring: 0 0 0 1px #6e008d23;
  --radius: 12px;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
}

/* Layout */
.page {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.page #login-title {
  position: absolute;
  left: -9999px;
}

.field {
  position: relative;
  width: min(100%, 360px);
  margin-inline: 0.5rem;
}

.field input {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1rem 0.9rem;
  background: var(--bg);
  color: var(--muted);
  outline: none;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}

.field input:focus {
  color: var(--focus);
  border-color: var(--focus);
  box-shadow: var(--ring);
}

.field label {
  position: absolute;
  top: 50%;
  left: 1rem;
  translate: 0 -50%;
  padding: 0 0.25rem;
  color: var(--muted);
  background: var(--bg);
  pointer-events: none;
  transition: transform 120ms ease, color 120ms ease, top 120ms ease, font-size 120ms ease;
}

.field input:focus+label {
  top: 0;
  translate: 0 -50%;
  font-size: 0.875rem;
  color: var(--focus);
}

.field input:not(:placeholder-shown)+label {
  top: 0;
  translate: 0 -50%;
  font-size: 0.875rem;
  color: var(--focus);
}

.field input:not(:focus)+label {
  color: var(--muted);
}