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

:root {
  --ruby-2: #1f1418;
  --ruby-4: #4a1822;
  --gray-2: #18181b;
  --gray-3: #27272a;
  --gray-11: #b0b0b8;
  --gray-12: #eeeef0;
  --green-3: #113123;
  --green-6: #2a7a4e;
  --green-11: #3dd68c;
  --radius-card: 16px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

html,
body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
}

body {
  font-family: var(--font);
  color: var(--gray-12);
  background: linear-gradient(151deg, var(--ruby-2) 15%, var(--ruby-4) 87%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.page {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.25em;
}

.stack {
  width: 100%;
  max-width: 20em;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.lang {
  display: inline-flex;
  border-radius: 999px;
  padding: 0.15rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--gray-3);
}

.lang button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--gray-11);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
}

.lang button.is-active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--gray-12);
}

.card {
  width: 100%;
  padding: 1.5em;
  border: 1px solid var(--gray-3);
  border-radius: var(--radius-card);
  background: var(--gray-2);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
}

.brand img {
  width: 6em;
  height: auto;
}

.brand h1 {
  margin: 0.35rem 0 0;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gray-12);
}

.subtitle {
  margin: 0.2rem 0 0;
  font-size: 0.875rem;
  color: var(--gray-11);
}

.btn {
  display: block;
  width: 100%;
  text-align: center;
  text-decoration: none;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.2;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.btn-main {
  background: rgba(61, 214, 140, 0.12);
  color: var(--green-11);
  border-color: rgba(61, 214, 140, 0.22);
}

.btn-backup {
  background: rgba(255, 255, 255, 0.06);
  color: var(--gray-12);
  border-color: rgba(255, 255, 255, 0.08);
}

.hint {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-11);
  text-align: center;
}

.empty {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-11);
  text-align: center;
}

.t-en {
  display: none;
}

html[lang="en"] .t-ru {
  display: none;
}

html[lang="en"] .t-en {
  display: inline;
}