:root {
  --bg: #0F1117;
  --card: #1D1F2A;
  --text: #FFFFFF;
  --muted: #A3A7BD;
  --primary: #4B39EF;
  --primary-hover: #5D4DF5;
  --border: #2A2D3B;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #F4F5FA;
    --card: #FFFFFF;
    --text: #14161F;
    --muted: #5A5E78;
    --border: #E0E3E7;
  }
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.card {
  width: 100%;
  max-width: 440px;
  padding: 40px 32px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  text-align: center;
}

.logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: var(--primary);
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

h1 {
  margin: 0 0 12px;
  font-size: 32px;
  line-height: 1.2;
}

.lead {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
}

.btn {
  display: block;
  padding: 14px 20px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s;
}

.btn:hover { background: var(--primary-hover); }

.btn:focus-visible,
.langs a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}

footer p { margin: 8px 0 0; }

.langs {
  display: flex;
  justify-content: center;
  gap: 4px;
}

.langs a {
  padding: 6px 10px;
  border-radius: 8px;
  color: var(--muted);
  font-weight: 600;
  text-decoration: none;
}

.langs a:hover { color: var(--text); }

.langs a.on {
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border);
}