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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #f5f5f7;
  color: #1d1d1f;
  min-height: 100vh;
}

.container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.card {
  background: #fff;
  border-radius: 16px;
  padding: 48px 40px;
  text-align: center;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.logo {
  font-size: 48px;
  font-weight: 700;
  letter-spacing: -1px;
  color: #1d1d1f;
  margin-bottom: 8px;
}

.tagline {
  color: #86868b;
  font-size: 16px;
  margin-bottom: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity 0.15s;
}

.btn:hover {
  opacity: 0.85;
}

.btn-primary {
  background: #1d1d1f;
  color: #fff;
}

.btn-google {
  background: #fff;
  color: #3c4043;
  border: 1px solid #dadce0;
}

.btn-google:hover {
  background: #f8f9fa;
  opacity: 1;
}

.btn-secondary {
  background: transparent;
  color: #86868b;
  font-size: 14px;
  padding: 10px;
}

.btn-secondary:hover {
  color: #1d1d1f;
  opacity: 1;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  margin-bottom: 16px;
  padding: 16px;
  background: #f5f5f7;
  border-radius: 12px;
}

.avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
}

.user-name {
  font-weight: 600;
  font-size: 16px;
}

.user-email {
  color: #86868b;
  font-size: 14px;
}

.success-msg {
  color: #34c759;
  font-size: 14px;
  margin-bottom: 24px;
}