:root {
  --bg: #f7f8fa;
  --text: #1a2e28;
  --muted: #4a635c;
  --accent: #52a896;
  --accent-dark: #3e8a78;
  --card: #ffffff;
  --border: #e2e8e6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.card {
  width: 100%;
  max-width: 420px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: 0 8px 32px rgba(26, 46, 40, 0.06);
}

.logo {
  width: min(280px, 100%);
  height: auto;
  margin: 0 auto 1rem;
  display: block;
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  color: var(--text);
}

p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.btn {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.9rem 1.4rem;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}

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

.muted {
  font-size: 0.9rem;
  color: var(--muted);
}

.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 1rem;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}