*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 15px;
  font-optical-sizing: auto;
  line-height: 1.55;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(79, 140, 255, 0.07), transparent 55%),
    var(--bg-app);
  background-attachment: fixed;
}

::selection {
  background: rgba(79, 140, 255, 0.35);
  color: #fff;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-hover);
}

button,
input {
  font: inherit;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 700;
}

.accent {
  color: var(--accent);
}

.flash {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  font-size: 13px;
  line-height: 1.45;
}

.flash.is-visible {
  display: block;
}

.flash-error {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-strong);
  color: var(--text-soft);
}

.flash-success {
  background: var(--accent-subtle);
  border: 1px solid rgba(79, 140, 255, 0.35);
  color: var(--text);
}